./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/rfi000_tso.i --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_99909224-bfc9-459e-be7b-64f5580b93d0/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99909224-bfc9-459e-be7b-64f5580b93d0/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_99909224-bfc9-459e-be7b-64f5580b93d0/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99909224-bfc9-459e-be7b-64f5580b93d0/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/rfi000_tso.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99909224-bfc9-459e-be7b-64f5580b93d0/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_99909224-bfc9-459e-be7b-64f5580b93d0/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 5128c539cd3051e20c09e1924eb0951d5be697be251e10d3c281464ed4c436cd --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 08:03:13,744 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 08:03:13,884 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99909224-bfc9-459e-be7b-64f5580b93d0/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-19 08:03:13,889 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 08:03:13,890 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 08:03:13,937 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 08:03:13,938 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 08:03:13,940 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 08:03:13,941 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 08:03:13,946 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 08:03:13,948 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 08:03:13,948 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 08:03:13,949 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 08:03:13,951 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 08:03:13,951 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 08:03:13,952 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 08:03:13,952 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 08:03:13,953 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 08:03:13,953 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 08:03:13,954 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 08:03:13,954 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 08:03:13,955 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 08:03:13,956 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 08:03:13,956 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 08:03:13,957 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 08:03:13,958 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 08:03:13,958 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 08:03:13,959 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 08:03:13,959 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:03:13,960 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 08:03:13,961 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 08:03:13,961 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 08:03:13,962 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 08:03:13,962 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 08:03:13,962 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 08:03:13,963 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 08:03:13,963 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 08:03:13,963 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 08:03:13,964 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 08:03:13,964 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_99909224-bfc9-459e-be7b-64f5580b93d0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99909224-bfc9-459e-be7b-64f5580b93d0/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5128c539cd3051e20c09e1924eb0951d5be697be251e10d3c281464ed4c436cd [2023-11-19 08:03:14,357 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 08:03:14,394 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 08:03:14,397 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 08:03:14,399 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 08:03:14,400 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 08:03:14,402 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99909224-bfc9-459e-be7b-64f5580b93d0/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/pthread-wmm/rfi000_tso.i [2023-11-19 08:03:17,541 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 08:03:17,876 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 08:03:17,876 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99909224-bfc9-459e-be7b-64f5580b93d0/sv-benchmarks/c/pthread-wmm/rfi000_tso.i [2023-11-19 08:03:17,892 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99909224-bfc9-459e-be7b-64f5580b93d0/bin/uautomizer-verify-uCwYo4JHxu/data/493b8fa6c/5787fbe834714647b89499574ab01b34/FLAG68096b122 [2023-11-19 08:03:17,908 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99909224-bfc9-459e-be7b-64f5580b93d0/bin/uautomizer-verify-uCwYo4JHxu/data/493b8fa6c/5787fbe834714647b89499574ab01b34 [2023-11-19 08:03:17,910 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 08:03:17,912 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 08:03:17,914 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 08:03:17,914 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 08:03:17,923 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 08:03:17,924 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:03:17" (1/1) ... [2023-11-19 08:03:17,925 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@84c7e6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:03:17, skipping insertion in model container [2023-11-19 08:03:17,925 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:03:17" (1/1) ... [2023-11-19 08:03:17,979 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 08:03:18,163 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_99909224-bfc9-459e-be7b-64f5580b93d0/sv-benchmarks/c/pthread-wmm/rfi000_tso.i[944,957] [2023-11-19 08:03:18,459 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:03:18,471 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 08:03:18,485 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_99909224-bfc9-459e-be7b-64f5580b93d0/sv-benchmarks/c/pthread-wmm/rfi000_tso.i[944,957] [2023-11-19 08:03:18,583 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:03:18,624 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 08:03:18,625 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 08:03:18,634 INFO L206 MainTranslator]: Completed translation [2023-11-19 08:03:18,635 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:03:18 WrapperNode [2023-11-19 08:03:18,635 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 08:03:18,636 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 08:03:18,637 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 08:03:18,637 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 08:03:18,647 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:03:18" (1/1) ... [2023-11-19 08:03:18,671 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:03:18" (1/1) ... [2023-11-19 08:03:18,740 INFO L138 Inliner]: procedures = 175, calls = 45, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 169 [2023-11-19 08:03:18,741 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 08:03:18,741 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 08:03:18,742 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 08:03:18,742 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 08:03:18,757 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:03:18" (1/1) ... [2023-11-19 08:03:18,757 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:03:18" (1/1) ... [2023-11-19 08:03:18,764 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:03:18" (1/1) ... [2023-11-19 08:03:18,765 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:03:18" (1/1) ... [2023-11-19 08:03:18,777 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:03:18" (1/1) ... [2023-11-19 08:03:18,779 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:03:18" (1/1) ... [2023-11-19 08:03:18,783 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:03:18" (1/1) ... [2023-11-19 08:03:18,785 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:03:18" (1/1) ... [2023-11-19 08:03:18,791 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 08:03:18,792 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 08:03:18,792 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 08:03:18,792 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 08:03:18,793 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:03:18" (1/1) ... [2023-11-19 08:03:18,814 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:03:18,834 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99909224-bfc9-459e-be7b-64f5580b93d0/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:03:18,846 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99909224-bfc9-459e-be7b-64f5580b93d0/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 08:03:18,872 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99909224-bfc9-459e-be7b-64f5580b93d0/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 08:03:18,903 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 08:03:18,903 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-19 08:03:18,903 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 08:03:18,904 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 08:03:18,904 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 08:03:18,904 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-19 08:03:18,904 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-19 08:03:18,904 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-19 08:03:18,905 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-19 08:03:18,905 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 08:03:18,907 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-19 08:03:18,908 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 08:03:18,909 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 08:03:18,911 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 08:03:19,091 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 08:03:19,093 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 08:03:19,539 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 08:03:19,835 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 08:03:19,835 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 08:03:19,841 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:03:19 BoogieIcfgContainer [2023-11-19 08:03:19,841 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 08:03:19,845 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 08:03:19,846 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 08:03:19,851 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 08:03:19,851 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:03:17" (1/3) ... [2023-11-19 08:03:19,852 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b32a620 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:03:19, skipping insertion in model container [2023-11-19 08:03:19,852 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:03:18" (2/3) ... [2023-11-19 08:03:19,854 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b32a620 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:03:19, skipping insertion in model container [2023-11-19 08:03:19,855 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:03:19" (3/3) ... [2023-11-19 08:03:19,857 INFO L112 eAbstractionObserver]: Analyzing ICFG rfi000_tso.i [2023-11-19 08:03:19,870 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 08:03:19,880 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 08:03:19,880 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-19 08:03:19,881 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 08:03:19,953 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-19 08:03:20,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 98 places, 94 transitions, 196 flow [2023-11-19 08:03:20,100 INFO L124 PetriNetUnfolderBase]: 3/92 cut-off events. [2023-11-19 08:03:20,100 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 08:03:20,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99 conditions, 92 events. 3/92 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 0/87 useless extension candidates. Maximal degree in co-relation 58. Up to 2 conditions per place. [2023-11-19 08:03:20,112 INFO L82 GeneralOperation]: Start removeDead. Operand has 98 places, 94 transitions, 196 flow [2023-11-19 08:03:20,118 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 96 places, 92 transitions, 190 flow [2023-11-19 08:03:20,137 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 08:03:20,150 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 96 places, 92 transitions, 190 flow [2023-11-19 08:03:20,153 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 96 places, 92 transitions, 190 flow [2023-11-19 08:03:20,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 96 places, 92 transitions, 190 flow [2023-11-19 08:03:20,185 INFO L124 PetriNetUnfolderBase]: 3/92 cut-off events. [2023-11-19 08:03:20,187 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 08:03:20,189 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99 conditions, 92 events. 3/92 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 0/87 useless extension candidates. Maximal degree in co-relation 58. Up to 2 conditions per place. [2023-11-19 08:03:20,192 INFO L119 LiptonReduction]: Number of co-enabled transitions 1368 [2023-11-19 08:03:24,100 INFO L134 LiptonReduction]: Checked pairs total: 3987 [2023-11-19 08:03:24,101 INFO L136 LiptonReduction]: Total number of compositions: 80 [2023-11-19 08:03:24,124 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 08:03:24,133 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;@19671092, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 08:03:24,133 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-11-19 08:03:24,137 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 08:03:24,137 INFO L124 PetriNetUnfolderBase]: 1/12 cut-off events. [2023-11-19 08:03:24,138 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 08:03:24,138 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:03:24,139 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-19 08:03:24,139 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-19 08:03:24,145 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:03:24,145 INFO L85 PathProgramCache]: Analyzing trace with hash 1593844248, now seen corresponding path program 1 times [2023-11-19 08:03:24,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:03:24,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895918680] [2023-11-19 08:03:24,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:03:24,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:03:24,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:24,735 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 08:03:24,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:03:24,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895918680] [2023-11-19 08:03:24,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895918680] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:03:24,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:03:24,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 08:03:24,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655833042] [2023-11-19 08:03:24,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:03:24,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:03:24,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:03:24,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:03:24,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:03:24,811 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 174 [2023-11-19 08:03:24,815 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 22 transitions, 50 flow. Second operand has 3 states, 3 states have (on average 81.0) internal successors, (243), 3 states have internal predecessors, (243), 0 states have call successors, (0), 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 08:03:24,815 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:03:24,815 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 174 [2023-11-19 08:03:24,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:03:25,135 INFO L124 PetriNetUnfolderBase]: 294/501 cut-off events. [2023-11-19 08:03:25,135 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-19 08:03:25,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1014 conditions, 501 events. 294/501 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2046 event pairs, 69 based on Foata normal form. 28/472 useless extension candidates. Maximal degree in co-relation 1004. Up to 366 conditions per place. [2023-11-19 08:03:25,148 INFO L140 encePairwiseOnDemand]: 170/174 looper letters, 22 selfloop transitions, 2 changer transitions 4/29 dead transitions. [2023-11-19 08:03:25,148 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 29 transitions, 120 flow [2023-11-19 08:03:25,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:03:25,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 08:03:25,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 268 transitions. [2023-11-19 08:03:25,176 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5134099616858238 [2023-11-19 08:03:25,177 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 268 transitions. [2023-11-19 08:03:25,178 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 268 transitions. [2023-11-19 08:03:25,182 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:03:25,185 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 268 transitions. [2023-11-19 08:03:25,190 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 0 states have call successors, (0), 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 08:03:25,195 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 174.0) internal successors, (696), 4 states have internal predecessors, (696), 0 states have call successors, (0), 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 08:03:25,196 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 174.0) internal successors, (696), 4 states have internal predecessors, (696), 0 states have call successors, (0), 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 08:03:25,198 INFO L175 Difference]: Start difference. First operand has 28 places, 22 transitions, 50 flow. Second operand 3 states and 268 transitions. [2023-11-19 08:03:25,199 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 29 transitions, 120 flow [2023-11-19 08:03:25,202 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 29 transitions, 118 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 08:03:25,204 INFO L231 Difference]: Finished difference. Result has 27 places, 18 transitions, 44 flow [2023-11-19 08:03:25,206 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=44, PETRI_PLACES=27, PETRI_TRANSITIONS=18} [2023-11-19 08:03:25,211 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, -1 predicate places. [2023-11-19 08:03:25,211 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 18 transitions, 44 flow [2023-11-19 08:03:25,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.0) internal successors, (243), 3 states have internal predecessors, (243), 0 states have call successors, (0), 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 08:03:25,212 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:03:25,212 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:03:25,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 08:03:25,213 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-19 08:03:25,214 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:03:25,215 INFO L85 PathProgramCache]: Analyzing trace with hash -1617254613, now seen corresponding path program 1 times [2023-11-19 08:03:25,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:03:25,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456095819] [2023-11-19 08:03:25,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:03:25,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:03:25,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:26,442 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 08:03:26,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:03:26,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456095819] [2023-11-19 08:03:26,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456095819] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:03:26,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:03:26,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 08:03:26,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884217124] [2023-11-19 08:03:26,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:03:26,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 08:03:26,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:03:26,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 08:03:26,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 08:03:26,522 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 174 [2023-11-19 08:03:26,523 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 18 transitions, 44 flow. Second operand has 5 states, 5 states have (on average 69.6) internal successors, (348), 5 states have internal predecessors, (348), 0 states have call successors, (0), 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 08:03:26,523 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:03:26,524 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 174 [2023-11-19 08:03:26,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:03:27,010 INFO L124 PetriNetUnfolderBase]: 282/497 cut-off events. [2023-11-19 08:03:27,011 INFO L125 PetriNetUnfolderBase]: For 17/17 co-relation queries the response was YES. [2023-11-19 08:03:27,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1030 conditions, 497 events. 282/497 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1892 event pairs, 90 based on Foata normal form. 39/536 useless extension candidates. Maximal degree in co-relation 1020. Up to 265 conditions per place. [2023-11-19 08:03:27,017 INFO L140 encePairwiseOnDemand]: 165/174 looper letters, 24 selfloop transitions, 7 changer transitions 20/51 dead transitions. [2023-11-19 08:03:27,017 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 51 transitions, 214 flow [2023-11-19 08:03:27,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 08:03:27,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-19 08:03:27,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 530 transitions. [2023-11-19 08:03:27,022 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4351395730706076 [2023-11-19 08:03:27,022 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 530 transitions. [2023-11-19 08:03:27,023 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 530 transitions. [2023-11-19 08:03:27,023 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:03:27,024 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 530 transitions. [2023-11-19 08:03:27,026 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 75.71428571428571) internal successors, (530), 7 states have internal predecessors, (530), 0 states have call successors, (0), 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 08:03:27,033 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 174.0) internal successors, (1392), 8 states have internal predecessors, (1392), 0 states have call successors, (0), 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 08:03:27,037 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 174.0) internal successors, (1392), 8 states have internal predecessors, (1392), 0 states have call successors, (0), 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 08:03:27,038 INFO L175 Difference]: Start difference. First operand has 27 places, 18 transitions, 44 flow. Second operand 7 states and 530 transitions. [2023-11-19 08:03:27,039 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 51 transitions, 214 flow [2023-11-19 08:03:27,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 51 transitions, 208 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 08:03:27,042 INFO L231 Difference]: Finished difference. Result has 35 places, 23 transitions, 106 flow [2023-11-19 08:03:27,042 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=106, PETRI_PLACES=35, PETRI_TRANSITIONS=23} [2023-11-19 08:03:27,043 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 7 predicate places. [2023-11-19 08:03:27,043 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 23 transitions, 106 flow [2023-11-19 08:03:27,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 69.6) internal successors, (348), 5 states have internal predecessors, (348), 0 states have call successors, (0), 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 08:03:27,044 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:03:27,044 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:03:27,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 08:03:27,045 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-19 08:03:27,046 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:03:27,046 INFO L85 PathProgramCache]: Analyzing trace with hash -820296322, now seen corresponding path program 1 times [2023-11-19 08:03:27,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:03:27,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870101707] [2023-11-19 08:03:27,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:03:27,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:03:27,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:28,039 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 08:03:28,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:03:28,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870101707] [2023-11-19 08:03:28,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870101707] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:03:28,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:03:28,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 08:03:28,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182929924] [2023-11-19 08:03:28,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:03:28,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 08:03:28,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:03:28,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 08:03:28,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 08:03:28,114 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 174 [2023-11-19 08:03:28,114 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 23 transitions, 106 flow. Second operand has 5 states, 5 states have (on average 70.2) internal successors, (351), 5 states have internal predecessors, (351), 0 states have call successors, (0), 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 08:03:28,115 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:03:28,115 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 174 [2023-11-19 08:03:28,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:03:28,502 INFO L124 PetriNetUnfolderBase]: 235/423 cut-off events. [2023-11-19 08:03:28,502 INFO L125 PetriNetUnfolderBase]: For 382/382 co-relation queries the response was YES. [2023-11-19 08:03:28,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1331 conditions, 423 events. 235/423 cut-off events. For 382/382 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1554 event pairs, 100 based on Foata normal form. 24/447 useless extension candidates. Maximal degree in co-relation 1315. Up to 197 conditions per place. [2023-11-19 08:03:28,507 INFO L140 encePairwiseOnDemand]: 166/174 looper letters, 27 selfloop transitions, 7 changer transitions 17/51 dead transitions. [2023-11-19 08:03:28,507 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 51 transitions, 332 flow [2023-11-19 08:03:28,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 08:03:28,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-19 08:03:28,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 524 transitions. [2023-11-19 08:03:28,511 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4302134646962233 [2023-11-19 08:03:28,511 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 524 transitions. [2023-11-19 08:03:28,511 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 524 transitions. [2023-11-19 08:03:28,512 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:03:28,512 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 524 transitions. [2023-11-19 08:03:28,514 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 74.85714285714286) internal successors, (524), 7 states have internal predecessors, (524), 0 states have call successors, (0), 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 08:03:28,518 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 174.0) internal successors, (1392), 8 states have internal predecessors, (1392), 0 states have call successors, (0), 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 08:03:28,519 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 174.0) internal successors, (1392), 8 states have internal predecessors, (1392), 0 states have call successors, (0), 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 08:03:28,520 INFO L175 Difference]: Start difference. First operand has 35 places, 23 transitions, 106 flow. Second operand 7 states and 524 transitions. [2023-11-19 08:03:28,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 51 transitions, 332 flow [2023-11-19 08:03:28,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 51 transitions, 322 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-11-19 08:03:28,530 INFO L231 Difference]: Finished difference. Result has 42 places, 26 transitions, 164 flow [2023-11-19 08:03:28,531 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=164, PETRI_PLACES=42, PETRI_TRANSITIONS=26} [2023-11-19 08:03:28,532 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 14 predicate places. [2023-11-19 08:03:28,536 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 26 transitions, 164 flow [2023-11-19 08:03:28,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 70.2) internal successors, (351), 5 states have internal predecessors, (351), 0 states have call successors, (0), 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 08:03:28,537 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:03:28,537 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:03:28,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 08:03:28,538 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-19 08:03:28,539 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:03:28,539 INFO L85 PathProgramCache]: Analyzing trace with hash 340583428, now seen corresponding path program 1 times [2023-11-19 08:03:28,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:03:28,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495458647] [2023-11-19 08:03:28,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:03:28,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:03:28,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:29,668 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 08:03:29,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:03:29,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495458647] [2023-11-19 08:03:29,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495458647] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:03:29,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:03:29,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 08:03:29,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536008471] [2023-11-19 08:03:29,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:03:29,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 08:03:29,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:03:29,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 08:03:29,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-11-19 08:03:29,738 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 174 [2023-11-19 08:03:29,739 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 26 transitions, 164 flow. Second operand has 8 states, 8 states have (on average 73.5) internal successors, (588), 8 states have internal predecessors, (588), 0 states have call successors, (0), 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 08:03:29,739 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:03:29,739 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 174 [2023-11-19 08:03:29,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:03:30,052 INFO L124 PetriNetUnfolderBase]: 204/379 cut-off events. [2023-11-19 08:03:30,052 INFO L125 PetriNetUnfolderBase]: For 681/697 co-relation queries the response was YES. [2023-11-19 08:03:30,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1334 conditions, 379 events. 204/379 cut-off events. For 681/697 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1421 event pairs, 86 based on Foata normal form. 30/406 useless extension candidates. Maximal degree in co-relation 1312. Up to 303 conditions per place. [2023-11-19 08:03:30,057 INFO L140 encePairwiseOnDemand]: 167/174 looper letters, 33 selfloop transitions, 7 changer transitions 10/53 dead transitions. [2023-11-19 08:03:30,057 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 53 transitions, 375 flow [2023-11-19 08:03:30,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 08:03:30,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-19 08:03:30,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 548 transitions. [2023-11-19 08:03:30,060 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44991789819376027 [2023-11-19 08:03:30,060 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 548 transitions. [2023-11-19 08:03:30,060 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 548 transitions. [2023-11-19 08:03:30,061 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:03:30,061 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 548 transitions. [2023-11-19 08:03:30,063 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 78.28571428571429) internal successors, (548), 7 states have internal predecessors, (548), 0 states have call successors, (0), 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 08:03:30,067 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 174.0) internal successors, (1392), 8 states have internal predecessors, (1392), 0 states have call successors, (0), 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 08:03:30,067 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 174.0) internal successors, (1392), 8 states have internal predecessors, (1392), 0 states have call successors, (0), 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 08:03:30,068 INFO L175 Difference]: Start difference. First operand has 42 places, 26 transitions, 164 flow. Second operand 7 states and 548 transitions. [2023-11-19 08:03:30,068 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 53 transitions, 375 flow [2023-11-19 08:03:30,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 53 transitions, 356 flow, removed 6 selfloop flow, removed 4 redundant places. [2023-11-19 08:03:30,074 INFO L231 Difference]: Finished difference. Result has 46 places, 32 transitions, 202 flow [2023-11-19 08:03:30,075 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=149, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=202, PETRI_PLACES=46, PETRI_TRANSITIONS=32} [2023-11-19 08:03:30,076 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 18 predicate places. [2023-11-19 08:03:30,076 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 32 transitions, 202 flow [2023-11-19 08:03:30,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 73.5) internal successors, (588), 8 states have internal predecessors, (588), 0 states have call successors, (0), 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 08:03:30,076 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:03:30,077 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:03:30,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 08:03:30,077 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-19 08:03:30,078 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:03:30,078 INFO L85 PathProgramCache]: Analyzing trace with hash 922401658, now seen corresponding path program 2 times [2023-11-19 08:03:30,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:03:30,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893879977] [2023-11-19 08:03:30,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:03:30,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:03:30,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:31,073 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 08:03:31,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:03:31,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893879977] [2023-11-19 08:03:31,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893879977] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:03:31,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:03:31,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 08:03:31,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008622649] [2023-11-19 08:03:31,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:03:31,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 08:03:31,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:03:31,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 08:03:31,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-19 08:03:31,117 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 174 [2023-11-19 08:03:31,118 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 32 transitions, 202 flow. Second operand has 8 states, 8 states have (on average 73.5) internal successors, (588), 8 states have internal predecessors, (588), 0 states have call successors, (0), 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 08:03:31,119 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:03:31,119 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 174 [2023-11-19 08:03:31,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:03:31,378 INFO L124 PetriNetUnfolderBase]: 194/363 cut-off events. [2023-11-19 08:03:31,379 INFO L125 PetriNetUnfolderBase]: For 602/615 co-relation queries the response was YES. [2023-11-19 08:03:31,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1365 conditions, 363 events. 194/363 cut-off events. For 602/615 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1346 event pairs, 87 based on Foata normal form. 27/387 useless extension candidates. Maximal degree in co-relation 1340. Up to 279 conditions per place. [2023-11-19 08:03:31,384 INFO L140 encePairwiseOnDemand]: 169/174 looper letters, 33 selfloop transitions, 8 changer transitions 10/54 dead transitions. [2023-11-19 08:03:31,384 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 54 transitions, 409 flow [2023-11-19 08:03:31,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 08:03:31,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 08:03:31,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 472 transitions. [2023-11-19 08:03:31,387 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4521072796934866 [2023-11-19 08:03:31,387 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 472 transitions. [2023-11-19 08:03:31,387 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 472 transitions. [2023-11-19 08:03:31,388 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:03:31,388 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 472 transitions. [2023-11-19 08:03:31,390 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 78.66666666666667) internal successors, (472), 6 states have internal predecessors, (472), 0 states have call successors, (0), 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 08:03:31,392 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 174.0) internal successors, (1218), 7 states have internal predecessors, (1218), 0 states have call successors, (0), 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 08:03:31,393 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 174.0) internal successors, (1218), 7 states have internal predecessors, (1218), 0 states have call successors, (0), 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 08:03:31,393 INFO L175 Difference]: Start difference. First operand has 46 places, 32 transitions, 202 flow. Second operand 6 states and 472 transitions. [2023-11-19 08:03:31,393 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 54 transitions, 409 flow [2023-11-19 08:03:31,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 54 transitions, 399 flow, removed 5 selfloop flow, removed 4 redundant places. [2023-11-19 08:03:31,399 INFO L231 Difference]: Finished difference. Result has 49 places, 34 transitions, 234 flow [2023-11-19 08:03:31,400 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=234, PETRI_PLACES=49, PETRI_TRANSITIONS=34} [2023-11-19 08:03:31,400 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 21 predicate places. [2023-11-19 08:03:31,401 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 34 transitions, 234 flow [2023-11-19 08:03:31,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 73.5) internal successors, (588), 8 states have internal predecessors, (588), 0 states have call successors, (0), 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 08:03:31,401 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:03:31,402 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:03:31,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 08:03:31,402 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-19 08:03:31,403 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:03:31,403 INFO L85 PathProgramCache]: Analyzing trace with hash -488807216, now seen corresponding path program 1 times [2023-11-19 08:03:31,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:03:31,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272204063] [2023-11-19 08:03:31,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:03:31,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:03:31,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:32,262 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 08:03:32,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:03:32,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272204063] [2023-11-19 08:03:32,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272204063] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:03:32,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:03:32,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 08:03:32,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810522345] [2023-11-19 08:03:32,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:03:32,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 08:03:32,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:03:32,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 08:03:32,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 08:03:32,337 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 174 [2023-11-19 08:03:32,338 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 34 transitions, 234 flow. Second operand has 5 states, 5 states have (on average 72.6) internal successors, (363), 5 states have internal predecessors, (363), 0 states have call successors, (0), 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 08:03:32,338 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:03:32,338 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 174 [2023-11-19 08:03:32,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:03:32,619 INFO L124 PetriNetUnfolderBase]: 156/289 cut-off events. [2023-11-19 08:03:32,619 INFO L125 PetriNetUnfolderBase]: For 512/525 co-relation queries the response was YES. [2023-11-19 08:03:32,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1173 conditions, 289 events. 156/289 cut-off events. For 512/525 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 984 event pairs, 58 based on Foata normal form. 19/305 useless extension candidates. Maximal degree in co-relation 1146. Up to 255 conditions per place. [2023-11-19 08:03:32,624 INFO L140 encePairwiseOnDemand]: 169/174 looper letters, 31 selfloop transitions, 5 changer transitions 0/39 dead transitions. [2023-11-19 08:03:32,625 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 39 transitions, 309 flow [2023-11-19 08:03:32,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 08:03:32,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 08:03:32,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 310 transitions. [2023-11-19 08:03:32,627 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4454022988505747 [2023-11-19 08:03:32,628 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 310 transitions. [2023-11-19 08:03:32,628 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 310 transitions. [2023-11-19 08:03:32,628 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:03:32,629 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 310 transitions. [2023-11-19 08:03:32,630 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 77.5) internal successors, (310), 4 states have internal predecessors, (310), 0 states have call successors, (0), 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 08:03:32,632 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 174.0) internal successors, (870), 5 states have internal predecessors, (870), 0 states have call successors, (0), 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 08:03:32,632 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 174.0) internal successors, (870), 5 states have internal predecessors, (870), 0 states have call successors, (0), 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 08:03:32,633 INFO L175 Difference]: Start difference. First operand has 49 places, 34 transitions, 234 flow. Second operand 4 states and 310 transitions. [2023-11-19 08:03:32,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 39 transitions, 309 flow [2023-11-19 08:03:32,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 39 transitions, 280 flow, removed 5 selfloop flow, removed 8 redundant places. [2023-11-19 08:03:32,639 INFO L231 Difference]: Finished difference. Result has 44 places, 32 transitions, 210 flow [2023-11-19 08:03:32,640 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=210, PETRI_PLACES=44, PETRI_TRANSITIONS=32} [2023-11-19 08:03:32,644 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 16 predicate places. [2023-11-19 08:03:32,644 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 32 transitions, 210 flow [2023-11-19 08:03:32,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 72.6) internal successors, (363), 5 states have internal predecessors, (363), 0 states have call successors, (0), 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 08:03:32,645 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:03:32,645 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:03:32,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 08:03:32,645 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-19 08:03:32,646 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:03:32,646 INFO L85 PathProgramCache]: Analyzing trace with hash -1260089448, now seen corresponding path program 2 times [2023-11-19 08:03:32,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:03:32,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060828737] [2023-11-19 08:03:32,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:03:32,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:03:32,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:32,914 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 08:03:32,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:03:32,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060828737] [2023-11-19 08:03:32,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060828737] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:03:32,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:03:32,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 08:03:32,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504566347] [2023-11-19 08:03:32,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:03:32,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:03:32,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:03:32,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:03:32,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:03:32,924 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 174 [2023-11-19 08:03:32,925 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 32 transitions, 210 flow. Second operand has 3 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 0 states have call successors, (0), 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 08:03:32,925 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:03:32,925 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 174 [2023-11-19 08:03:32,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:03:33,028 INFO L124 PetriNetUnfolderBase]: 61/142 cut-off events. [2023-11-19 08:03:33,028 INFO L125 PetriNetUnfolderBase]: For 268/275 co-relation queries the response was YES. [2023-11-19 08:03:33,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 577 conditions, 142 events. 61/142 cut-off events. For 268/275 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 415 event pairs, 24 based on Foata normal form. 22/162 useless extension candidates. Maximal degree in co-relation 553. Up to 90 conditions per place. [2023-11-19 08:03:33,030 INFO L140 encePairwiseOnDemand]: 170/174 looper letters, 35 selfloop transitions, 4 changer transitions 0/42 dead transitions. [2023-11-19 08:03:33,031 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 42 transitions, 335 flow [2023-11-19 08:03:33,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:03:33,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 08:03:33,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 260 transitions. [2023-11-19 08:03:33,033 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49808429118773945 [2023-11-19 08:03:33,033 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 260 transitions. [2023-11-19 08:03:33,034 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 260 transitions. [2023-11-19 08:03:33,034 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:03:33,034 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 260 transitions. [2023-11-19 08:03:33,035 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 86.66666666666667) internal successors, (260), 3 states have internal predecessors, (260), 0 states have call successors, (0), 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 08:03:33,037 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 174.0) internal successors, (696), 4 states have internal predecessors, (696), 0 states have call successors, (0), 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 08:03:33,037 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 174.0) internal successors, (696), 4 states have internal predecessors, (696), 0 states have call successors, (0), 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 08:03:33,038 INFO L175 Difference]: Start difference. First operand has 44 places, 32 transitions, 210 flow. Second operand 3 states and 260 transitions. [2023-11-19 08:03:33,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 42 transitions, 335 flow [2023-11-19 08:03:33,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 42 transitions, 326 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-11-19 08:03:33,042 INFO L231 Difference]: Finished difference. Result has 45 places, 33 transitions, 217 flow [2023-11-19 08:03:33,043 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=193, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=217, PETRI_PLACES=45, PETRI_TRANSITIONS=33} [2023-11-19 08:03:33,044 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 17 predicate places. [2023-11-19 08:03:33,044 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 33 transitions, 217 flow [2023-11-19 08:03:33,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 0 states have call successors, (0), 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 08:03:33,046 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:03:33,046 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:03:33,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 08:03:33,048 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-19 08:03:33,049 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:03:33,049 INFO L85 PathProgramCache]: Analyzing trace with hash -1920424653, now seen corresponding path program 1 times [2023-11-19 08:03:33,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:03:33,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472326478] [2023-11-19 08:03:33,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:03:33,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:03:33,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:34,581 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 08:03:34,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:03:34,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472326478] [2023-11-19 08:03:34,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472326478] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:03:34,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:03:34,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-19 08:03:34,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162652284] [2023-11-19 08:03:34,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:03:34,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-19 08:03:34,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:03:34,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-19 08:03:34,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-11-19 08:03:34,716 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 174 [2023-11-19 08:03:34,717 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 33 transitions, 217 flow. Second operand has 9 states, 9 states have (on average 71.66666666666667) internal successors, (645), 9 states have internal predecessors, (645), 0 states have call successors, (0), 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 08:03:34,717 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:03:34,717 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 174 [2023-11-19 08:03:34,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:03:35,346 INFO L124 PetriNetUnfolderBase]: 97/231 cut-off events. [2023-11-19 08:03:35,346 INFO L125 PetriNetUnfolderBase]: For 439/449 co-relation queries the response was YES. [2023-11-19 08:03:35,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1018 conditions, 231 events. 97/231 cut-off events. For 439/449 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 922 event pairs, 13 based on Foata normal form. 15/244 useless extension candidates. Maximal degree in co-relation 993. Up to 104 conditions per place. [2023-11-19 08:03:35,350 INFO L140 encePairwiseOnDemand]: 165/174 looper letters, 38 selfloop transitions, 19 changer transitions 21/81 dead transitions. [2023-11-19 08:03:35,350 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 81 transitions, 704 flow [2023-11-19 08:03:35,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-19 08:03:35,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-19 08:03:35,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 687 transitions. [2023-11-19 08:03:35,354 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4386973180076628 [2023-11-19 08:03:35,354 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 687 transitions. [2023-11-19 08:03:35,355 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 687 transitions. [2023-11-19 08:03:35,355 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:03:35,356 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 687 transitions. [2023-11-19 08:03:35,358 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 76.33333333333333) internal successors, (687), 9 states have internal predecessors, (687), 0 states have call successors, (0), 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 08:03:35,362 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 174.0) internal successors, (1740), 10 states have internal predecessors, (1740), 0 states have call successors, (0), 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 08:03:35,363 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 174.0) internal successors, (1740), 10 states have internal predecessors, (1740), 0 states have call successors, (0), 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 08:03:35,364 INFO L175 Difference]: Start difference. First operand has 45 places, 33 transitions, 217 flow. Second operand 9 states and 687 transitions. [2023-11-19 08:03:35,364 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 81 transitions, 704 flow [2023-11-19 08:03:35,368 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 81 transitions, 676 flow, removed 7 selfloop flow, removed 2 redundant places. [2023-11-19 08:03:35,370 INFO L231 Difference]: Finished difference. Result has 57 places, 46 transitions, 385 flow [2023-11-19 08:03:35,371 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=385, PETRI_PLACES=57, PETRI_TRANSITIONS=46} [2023-11-19 08:03:35,371 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 29 predicate places. [2023-11-19 08:03:35,372 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 46 transitions, 385 flow [2023-11-19 08:03:35,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 71.66666666666667) internal successors, (645), 9 states have internal predecessors, (645), 0 states have call successors, (0), 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 08:03:35,373 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:03:35,373 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:03:35,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-19 08:03:35,373 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-19 08:03:35,374 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:03:35,374 INFO L85 PathProgramCache]: Analyzing trace with hash 2079751807, now seen corresponding path program 2 times [2023-11-19 08:03:35,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:03:35,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977483187] [2023-11-19 08:03:35,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:03:35,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:03:35,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:35,637 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 08:03:35,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:03:35,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977483187] [2023-11-19 08:03:35,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977483187] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:03:35,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:03:35,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 08:03:35,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987226710] [2023-11-19 08:03:35,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:03:35,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 08:03:35,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:03:35,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 08:03:35,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 08:03:35,648 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 174 [2023-11-19 08:03:35,649 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 46 transitions, 385 flow. Second operand has 4 states, 4 states have (on average 80.75) internal successors, (323), 4 states have internal predecessors, (323), 0 states have call successors, (0), 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 08:03:35,649 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:03:35,649 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 174 [2023-11-19 08:03:35,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:03:35,767 INFO L124 PetriNetUnfolderBase]: 35/107 cut-off events. [2023-11-19 08:03:35,767 INFO L125 PetriNetUnfolderBase]: For 361/364 co-relation queries the response was YES. [2023-11-19 08:03:35,768 INFO L83 FinitePrefix]: Finished finitePrefix Result has 541 conditions, 107 events. 35/107 cut-off events. For 361/364 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 339 event pairs, 7 based on Foata normal form. 20/125 useless extension candidates. Maximal degree in co-relation 517. Up to 57 conditions per place. [2023-11-19 08:03:35,769 INFO L140 encePairwiseOnDemand]: 170/174 looper letters, 35 selfloop transitions, 5 changer transitions 8/51 dead transitions. [2023-11-19 08:03:35,769 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 51 transitions, 512 flow [2023-11-19 08:03:35,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 08:03:35,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 08:03:35,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 337 transitions. [2023-11-19 08:03:35,773 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48419540229885055 [2023-11-19 08:03:35,773 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 337 transitions. [2023-11-19 08:03:35,773 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 337 transitions. [2023-11-19 08:03:35,774 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:03:35,774 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 337 transitions. [2023-11-19 08:03:35,775 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 84.25) internal successors, (337), 4 states have internal predecessors, (337), 0 states have call successors, (0), 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 08:03:35,780 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 174.0) internal successors, (870), 5 states have internal predecessors, (870), 0 states have call successors, (0), 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 08:03:35,781 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 174.0) internal successors, (870), 5 states have internal predecessors, (870), 0 states have call successors, (0), 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 08:03:35,782 INFO L175 Difference]: Start difference. First operand has 57 places, 46 transitions, 385 flow. Second operand 4 states and 337 transitions. [2023-11-19 08:03:35,782 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 51 transitions, 512 flow [2023-11-19 08:03:35,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 51 transitions, 445 flow, removed 17 selfloop flow, removed 7 redundant places. [2023-11-19 08:03:35,790 INFO L231 Difference]: Finished difference. Result has 53 places, 37 transitions, 268 flow [2023-11-19 08:03:35,790 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=271, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=268, PETRI_PLACES=53, PETRI_TRANSITIONS=37} [2023-11-19 08:03:35,791 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 25 predicate places. [2023-11-19 08:03:35,792 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 37 transitions, 268 flow [2023-11-19 08:03:35,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 80.75) internal successors, (323), 4 states have internal predecessors, (323), 0 states have call successors, (0), 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 08:03:35,793 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:03:35,793 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:03:35,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-19 08:03:35,793 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-19 08:03:35,794 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:03:35,794 INFO L85 PathProgramCache]: Analyzing trace with hash 1405323737, now seen corresponding path program 1 times [2023-11-19 08:03:35,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:03:35,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188578933] [2023-11-19 08:03:35,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:03:35,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:03:35,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:38,319 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 08:03:38,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:03:38,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188578933] [2023-11-19 08:03:38,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188578933] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:03:38,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:03:38,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-19 08:03:38,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104571299] [2023-11-19 08:03:38,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:03:38,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-19 08:03:38,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:03:38,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-19 08:03:38,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-11-19 08:03:38,525 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 174 [2023-11-19 08:03:38,526 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 37 transitions, 268 flow. Second operand has 11 states, 11 states have (on average 71.54545454545455) internal successors, (787), 11 states have internal predecessors, (787), 0 states have call successors, (0), 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 08:03:38,526 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:03:38,526 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 174 [2023-11-19 08:03:38,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:03:38,949 INFO L124 PetriNetUnfolderBase]: 39/134 cut-off events. [2023-11-19 08:03:38,949 INFO L125 PetriNetUnfolderBase]: For 460/464 co-relation queries the response was YES. [2023-11-19 08:03:38,949 INFO L83 FinitePrefix]: Finished finitePrefix Result has 649 conditions, 134 events. 39/134 cut-off events. For 460/464 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 527 event pairs, 3 based on Foata normal form. 5/138 useless extension candidates. Maximal degree in co-relation 624. Up to 72 conditions per place. [2023-11-19 08:03:38,951 INFO L140 encePairwiseOnDemand]: 165/174 looper letters, 31 selfloop transitions, 13 changer transitions 20/67 dead transitions. [2023-11-19 08:03:38,951 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 67 transitions, 603 flow [2023-11-19 08:03:38,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-19 08:03:38,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-19 08:03:38,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 815 transitions. [2023-11-19 08:03:38,956 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4258098223615465 [2023-11-19 08:03:38,956 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 815 transitions. [2023-11-19 08:03:38,956 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 815 transitions. [2023-11-19 08:03:38,957 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:03:38,958 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 815 transitions. [2023-11-19 08:03:38,961 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 74.0909090909091) internal successors, (815), 11 states have internal predecessors, (815), 0 states have call successors, (0), 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 08:03:38,965 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 174.0) internal successors, (2088), 12 states have internal predecessors, (2088), 0 states have call successors, (0), 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 08:03:38,966 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 174.0) internal successors, (2088), 12 states have internal predecessors, (2088), 0 states have call successors, (0), 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 08:03:38,967 INFO L175 Difference]: Start difference. First operand has 53 places, 37 transitions, 268 flow. Second operand 11 states and 815 transitions. [2023-11-19 08:03:38,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 67 transitions, 603 flow [2023-11-19 08:03:38,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 67 transitions, 545 flow, removed 21 selfloop flow, removed 5 redundant places. [2023-11-19 08:03:38,972 INFO L231 Difference]: Finished difference. Result has 63 places, 44 transitions, 361 flow [2023-11-19 08:03:38,972 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=239, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=361, PETRI_PLACES=63, PETRI_TRANSITIONS=44} [2023-11-19 08:03:38,973 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 35 predicate places. [2023-11-19 08:03:38,973 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 44 transitions, 361 flow [2023-11-19 08:03:38,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 71.54545454545455) internal successors, (787), 11 states have internal predecessors, (787), 0 states have call successors, (0), 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 08:03:38,974 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:03:38,974 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:03:38,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-19 08:03:38,975 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-19 08:03:38,975 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:03:38,976 INFO L85 PathProgramCache]: Analyzing trace with hash 830751379, now seen corresponding path program 2 times [2023-11-19 08:03:38,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:03:38,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849268226] [2023-11-19 08:03:38,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:03:38,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:03:39,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:39,819 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 08:03:39,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:03:39,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849268226] [2023-11-19 08:03:39,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849268226] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:03:39,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:03:39,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 08:03:39,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462715484] [2023-11-19 08:03:39,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:03:39,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 08:03:39,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:03:39,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 08:03:39,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 08:03:39,893 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 174 [2023-11-19 08:03:39,893 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 44 transitions, 361 flow. Second operand has 5 states, 5 states have (on average 71.6) internal successors, (358), 5 states have internal predecessors, (358), 0 states have call successors, (0), 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 08:03:39,893 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:03:39,893 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 174 [2023-11-19 08:03:39,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:03:40,061 INFO L124 PetriNetUnfolderBase]: 37/121 cut-off events. [2023-11-19 08:03:40,061 INFO L125 PetriNetUnfolderBase]: For 347/347 co-relation queries the response was YES. [2023-11-19 08:03:40,062 INFO L83 FinitePrefix]: Finished finitePrefix Result has 614 conditions, 121 events. 37/121 cut-off events. For 347/347 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 434 event pairs, 4 based on Foata normal form. 1/122 useless extension candidates. Maximal degree in co-relation 591. Up to 66 conditions per place. [2023-11-19 08:03:40,063 INFO L140 encePairwiseOnDemand]: 168/174 looper letters, 22 selfloop transitions, 4 changer transitions 42/68 dead transitions. [2023-11-19 08:03:40,063 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 68 transitions, 651 flow [2023-11-19 08:03:40,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 08:03:40,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 08:03:40,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 376 transitions. [2023-11-19 08:03:40,066 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.432183908045977 [2023-11-19 08:03:40,066 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 376 transitions. [2023-11-19 08:03:40,067 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 376 transitions. [2023-11-19 08:03:40,067 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:03:40,067 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 376 transitions. [2023-11-19 08:03:40,069 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 75.2) internal successors, (376), 5 states have internal predecessors, (376), 0 states have call successors, (0), 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 08:03:40,071 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 174.0) internal successors, (1044), 6 states have internal predecessors, (1044), 0 states have call successors, (0), 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 08:03:40,072 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 174.0) internal successors, (1044), 6 states have internal predecessors, (1044), 0 states have call successors, (0), 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 08:03:40,072 INFO L175 Difference]: Start difference. First operand has 63 places, 44 transitions, 361 flow. Second operand 5 states and 376 transitions. [2023-11-19 08:03:40,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 68 transitions, 651 flow [2023-11-19 08:03:40,077 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 68 transitions, 608 flow, removed 14 selfloop flow, removed 6 redundant places. [2023-11-19 08:03:40,081 INFO L231 Difference]: Finished difference. Result has 60 places, 22 transitions, 137 flow [2023-11-19 08:03:40,081 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=335, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=137, PETRI_PLACES=60, PETRI_TRANSITIONS=22} [2023-11-19 08:03:40,082 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 32 predicate places. [2023-11-19 08:03:40,082 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 22 transitions, 137 flow [2023-11-19 08:03:40,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 71.6) internal successors, (358), 5 states have internal predecessors, (358), 0 states have call successors, (0), 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 08:03:40,083 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:03:40,083 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:03:40,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-19 08:03:40,083 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-19 08:03:40,084 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:03:40,084 INFO L85 PathProgramCache]: Analyzing trace with hash -2141252783, now seen corresponding path program 3 times [2023-11-19 08:03:40,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:03:40,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297699771] [2023-11-19 08:03:40,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:03:40,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:03:40,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:41,613 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 08:03:41,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:03:41,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297699771] [2023-11-19 08:03:41,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297699771] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:03:41,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:03:41,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-19 08:03:41,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237775015] [2023-11-19 08:03:41,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:03:41,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-19 08:03:41,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:03:41,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-19 08:03:41,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-11-19 08:03:41,659 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 174 [2023-11-19 08:03:41,660 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 22 transitions, 137 flow. Second operand has 9 states, 9 states have (on average 73.88888888888889) internal successors, (665), 9 states have internal predecessors, (665), 0 states have call successors, (0), 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 08:03:41,661 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:03:41,661 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 174 [2023-11-19 08:03:41,661 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:03:41,823 INFO L124 PetriNetUnfolderBase]: 6/30 cut-off events. [2023-11-19 08:03:41,823 INFO L125 PetriNetUnfolderBase]: For 46/47 co-relation queries the response was YES. [2023-11-19 08:03:41,823 INFO L83 FinitePrefix]: Finished finitePrefix Result has 143 conditions, 30 events. 6/30 cut-off events. For 46/47 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 26 event pairs, 2 based on Foata normal form. 1/31 useless extension candidates. Maximal degree in co-relation 123. Up to 10 conditions per place. [2023-11-19 08:03:41,823 INFO L140 encePairwiseOnDemand]: 166/174 looper letters, 0 selfloop transitions, 0 changer transitions 22/22 dead transitions. [2023-11-19 08:03:41,824 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 22 transitions, 181 flow [2023-11-19 08:03:41,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 08:03:41,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-19 08:03:41,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 596 transitions. [2023-11-19 08:03:41,827 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4281609195402299 [2023-11-19 08:03:41,827 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 596 transitions. [2023-11-19 08:03:41,827 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 596 transitions. [2023-11-19 08:03:41,827 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:03:41,828 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 596 transitions. [2023-11-19 08:03:41,830 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 74.5) internal successors, (596), 8 states have internal predecessors, (596), 0 states have call successors, (0), 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 08:03:41,834 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 174.0) internal successors, (1566), 9 states have internal predecessors, (1566), 0 states have call successors, (0), 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 08:03:41,835 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 174.0) internal successors, (1566), 9 states have internal predecessors, (1566), 0 states have call successors, (0), 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 08:03:41,835 INFO L175 Difference]: Start difference. First operand has 60 places, 22 transitions, 137 flow. Second operand 8 states and 596 transitions. [2023-11-19 08:03:41,835 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 22 transitions, 181 flow [2023-11-19 08:03:41,836 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 22 transitions, 130 flow, removed 5 selfloop flow, removed 17 redundant places. [2023-11-19 08:03:41,837 INFO L231 Difference]: Finished difference. Result has 42 places, 0 transitions, 0 flow [2023-11-19 08:03:41,837 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=42, PETRI_TRANSITIONS=0} [2023-11-19 08:03:41,838 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 14 predicate places. [2023-11-19 08:03:41,838 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 0 transitions, 0 flow [2023-11-19 08:03:41,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 73.88888888888889) internal successors, (665), 9 states have internal predecessors, (665), 0 states have call successors, (0), 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 08:03:41,842 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2023-11-19 08:03:41,843 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2023-11-19 08:03:41,844 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2023-11-19 08:03:41,845 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2023-11-19 08:03:41,845 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2023-11-19 08:03:41,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-19 08:03:41,845 INFO L445 BasicCegarLoop]: Path program histogram: [3, 2, 2, 2, 1, 1, 1] [2023-11-19 08:03:41,851 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-19 08:03:41,852 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-19 08:03:41,856 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 08:03:41 BasicIcfg [2023-11-19 08:03:41,857 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-19 08:03:41,857 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 08:03:41,858 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 08:03:41,858 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 08:03:41,858 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:03:19" (3/4) ... [2023-11-19 08:03:41,860 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-19 08:03:41,864 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2023-11-19 08:03:41,864 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2023-11-19 08:03:41,872 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 29 nodes and edges [2023-11-19 08:03:41,873 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2023-11-19 08:03:41,874 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-19 08:03:41,874 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-19 08:03:41,991 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99909224-bfc9-459e-be7b-64f5580b93d0/bin/uautomizer-verify-uCwYo4JHxu/witness.graphml [2023-11-19 08:03:41,991 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99909224-bfc9-459e-be7b-64f5580b93d0/bin/uautomizer-verify-uCwYo4JHxu/witness.yml [2023-11-19 08:03:41,991 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 08:03:41,992 INFO L158 Benchmark]: Toolchain (without parser) took 24080.17ms. Allocated memory was 148.9MB in the beginning and 392.2MB in the end (delta: 243.3MB). Free memory was 102.9MB in the beginning and 308.1MB in the end (delta: -205.2MB). Peak memory consumption was 40.8MB. Max. memory is 16.1GB. [2023-11-19 08:03:41,993 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 113.2MB. Free memory is still 65.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 08:03:41,993 INFO L158 Benchmark]: CACSL2BoogieTranslator took 722.07ms. Allocated memory is still 148.9MB. Free memory was 102.9MB in the beginning and 77.6MB in the end (delta: 25.3MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2023-11-19 08:03:41,994 INFO L158 Benchmark]: Boogie Procedure Inliner took 104.41ms. Allocated memory is still 148.9MB. Free memory was 77.6MB in the beginning and 74.4MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-19 08:03:41,994 INFO L158 Benchmark]: Boogie Preprocessor took 49.80ms. Allocated memory is still 148.9MB. Free memory was 74.4MB in the beginning and 72.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 08:03:41,994 INFO L158 Benchmark]: RCFGBuilder took 1049.69ms. Allocated memory is still 148.9MB. Free memory was 72.3MB in the beginning and 74.7MB in the end (delta: -2.4MB). Peak memory consumption was 11.4MB. Max. memory is 16.1GB. [2023-11-19 08:03:41,995 INFO L158 Benchmark]: TraceAbstraction took 22011.53ms. Allocated memory was 148.9MB in the beginning and 392.2MB in the end (delta: 243.3MB). Free memory was 74.3MB in the beginning and 313.4MB in the end (delta: -239.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-19 08:03:41,995 INFO L158 Benchmark]: Witness Printer took 134.16ms. Allocated memory is still 392.2MB. Free memory was 313.4MB in the beginning and 308.1MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-19 08:03:41,998 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 113.2MB. Free memory is still 65.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 722.07ms. Allocated memory is still 148.9MB. Free memory was 102.9MB in the beginning and 77.6MB in the end (delta: 25.3MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 104.41ms. Allocated memory is still 148.9MB. Free memory was 77.6MB in the beginning and 74.4MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 49.80ms. Allocated memory is still 148.9MB. Free memory was 74.4MB in the beginning and 72.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1049.69ms. Allocated memory is still 148.9MB. Free memory was 72.3MB in the beginning and 74.7MB in the end (delta: -2.4MB). Peak memory consumption was 11.4MB. Max. memory is 16.1GB. * TraceAbstraction took 22011.53ms. Allocated memory was 148.9MB in the beginning and 392.2MB in the end (delta: 243.3MB). Free memory was 74.3MB in the beginning and 313.4MB in the end (delta: -239.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Witness Printer took 134.16ms. Allocated memory is still 392.2MB. Free memory was 313.4MB in the beginning and 308.1MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.9s, 96 PlacesBefore, 28 PlacesAfterwards, 92 TransitionsBefore, 22 TransitionsAfterwards, 1368 CoEnabledTransitionPairs, 7 FixpointIterations, 34 TrivialSequentialCompositions, 38 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 2 ChoiceCompositions, 80 TotalNumberOfCompositions, 3987 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1412, independent: 1226, independent conditional: 0, independent unconditional: 1226, dependent: 186, dependent conditional: 0, dependent unconditional: 186, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 693, independent: 665, independent conditional: 0, independent unconditional: 665, dependent: 28, dependent conditional: 0, dependent unconditional: 28, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1412, independent: 561, independent conditional: 0, independent unconditional: 561, dependent: 158, dependent conditional: 0, dependent unconditional: 158, unknown: 693, unknown conditional: 0, unknown unconditional: 693] , Statistics on independence cache: Total cache size (in pairs): 45, Positive cache size: 30, Positive conditional cache size: 0, Positive unconditional cache size: 30, Negative cache size: 15, Negative conditional cache size: 0, Negative unconditional cache size: 15, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 18]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 18]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 113 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 21.9s, OverallIterations: 12, TraceHistogramMax: 1, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 4.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 525 SdHoareTripleChecker+Valid, 2.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 374 mSDsluCounter, 692 SdHoareTripleChecker+Invalid, 2.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 600 mSDsCounter, 157 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1666 IncrementalHoareTripleChecker+Invalid, 1823 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 157 mSolverCounterUnsat, 92 mSDtfsCounter, 1666 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 74 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 1.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=385occurred in iteration=8, InterpolantAutomatonStates: 74, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 11.9s InterpolantComputationTime, 159 NumberOfCodeBlocks, 159 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 147 ConstructedInterpolants, 0 QuantifiedInterpolants, 2087 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-19 08:03:42,061 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99909224-bfc9-459e-be7b-64f5580b93d0/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE