./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/mix014_power.oepc_pso.oepc_rmo.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0234d136-b3d5-4de6-9c55-641cd570433d/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0234d136-b3d5-4de6-9c55-641cd570433d/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_0234d136-b3d5-4de6-9c55-641cd570433d/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0234d136-b3d5-4de6-9c55-641cd570433d/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/mix014_power.oepc_pso.oepc_rmo.oepc.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0234d136-b3d5-4de6-9c55-641cd570433d/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_0234d136-b3d5-4de6-9c55-641cd570433d/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 a75df8feda97f2ebeb5cc4266066f8deba1b6726a771b6143f22a640cfcf63d2 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:40:34,787 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:40:34,867 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0234d136-b3d5-4de6-9c55-641cd570433d/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-19 07:40:34,873 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:40:34,873 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:40:34,898 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:40:34,898 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:40:34,899 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:40:34,900 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:40:34,900 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:40:34,901 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:40:34,902 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:40:34,902 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:40:34,903 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:40:34,903 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:40:34,904 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:40:34,904 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:40:34,905 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:40:34,905 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:40:34,906 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:40:34,906 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:40:34,907 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:40:34,907 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:40:34,908 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:40:34,908 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:40:34,909 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:40:34,909 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:40:34,910 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:40:34,910 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:40:34,910 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:40:34,911 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:40:34,911 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:40:34,911 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:40:34,912 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:40:34,912 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:40:34,912 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:40:34,912 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:40:34,913 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:40:34,913 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:40:34,913 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_0234d136-b3d5-4de6-9c55-641cd570433d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0234d136-b3d5-4de6-9c55-641cd570433d/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a75df8feda97f2ebeb5cc4266066f8deba1b6726a771b6143f22a640cfcf63d2 [2023-11-19 07:40:35,162 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:40:35,184 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:40:35,187 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:40:35,189 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:40:35,189 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:40:35,191 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0234d136-b3d5-4de6-9c55-641cd570433d/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/pthread-wmm/mix014_power.oepc_pso.oepc_rmo.oepc.i [2023-11-19 07:40:38,579 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:40:38,993 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:40:38,994 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0234d136-b3d5-4de6-9c55-641cd570433d/sv-benchmarks/c/pthread-wmm/mix014_power.oepc_pso.oepc_rmo.oepc.i [2023-11-19 07:40:39,021 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0234d136-b3d5-4de6-9c55-641cd570433d/bin/uautomizer-verify-uCwYo4JHxu/data/05f90b152/733e0ada13c141e9bf7fa6016149b784/FLAG91ad48696 [2023-11-19 07:40:39,040 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0234d136-b3d5-4de6-9c55-641cd570433d/bin/uautomizer-verify-uCwYo4JHxu/data/05f90b152/733e0ada13c141e9bf7fa6016149b784 [2023-11-19 07:40:39,043 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:40:39,045 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:40:39,047 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:40:39,048 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:40:39,055 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:40:39,056 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:40:39" (1/1) ... [2023-11-19 07:40:39,057 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4877801a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:39, skipping insertion in model container [2023-11-19 07:40:39,058 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:40:39" (1/1) ... [2023-11-19 07:40:39,145 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:40:39,399 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_0234d136-b3d5-4de6-9c55-641cd570433d/sv-benchmarks/c/pthread-wmm/mix014_power.oepc_pso.oepc_rmo.oepc.i[969,982] [2023-11-19 07:40:39,739 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:40:39,757 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:40:39,771 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_0234d136-b3d5-4de6-9c55-641cd570433d/sv-benchmarks/c/pthread-wmm/mix014_power.oepc_pso.oepc_rmo.oepc.i[969,982] [2023-11-19 07:40:39,899 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:40:39,938 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:40:39,938 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:40:39,947 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:40:39,948 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:39 WrapperNode [2023-11-19 07:40:39,948 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:40:39,949 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:40:39,949 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:40:39,950 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:40:39,958 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:39" (1/1) ... [2023-11-19 07:40:39,981 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:39" (1/1) ... [2023-11-19 07:40:40,014 INFO L138 Inliner]: procedures = 177, calls = 71, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 145 [2023-11-19 07:40:40,014 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:40:40,015 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:40:40,015 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:40:40,016 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:40:40,027 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:39" (1/1) ... [2023-11-19 07:40:40,027 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:39" (1/1) ... [2023-11-19 07:40:40,032 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:39" (1/1) ... [2023-11-19 07:40:40,033 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:39" (1/1) ... [2023-11-19 07:40:40,048 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:39" (1/1) ... [2023-11-19 07:40:40,051 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:39" (1/1) ... [2023-11-19 07:40:40,054 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:39" (1/1) ... [2023-11-19 07:40:40,057 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:39" (1/1) ... [2023-11-19 07:40:40,062 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:40:40,063 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:40:40,064 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:40:40,064 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:40:40,065 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:39" (1/1) ... [2023-11-19 07:40:40,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:40:40,095 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0234d136-b3d5-4de6-9c55-641cd570433d/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:40:40,132 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0234d136-b3d5-4de6-9c55-641cd570433d/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:40:40,171 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0234d136-b3d5-4de6-9c55-641cd570433d/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:40:40,185 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:40:40,185 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-19 07:40:40,185 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:40:40,185 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:40:40,186 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:40:40,186 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-19 07:40:40,186 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-19 07:40:40,186 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-19 07:40:40,186 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-19 07:40:40,186 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-19 07:40:40,187 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-19 07:40:40,187 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-11-19 07:40:40,187 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-11-19 07:40:40,187 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:40:40,188 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-19 07:40:40,188 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:40:40,188 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:40:40,190 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-19 07:40:40,378 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:40:40,381 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:40:40,895 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:40:41,110 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:40:41,111 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 07:40:41,118 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:40:41 BoogieIcfgContainer [2023-11-19 07:40:41,118 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:40:41,124 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:40:41,124 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:40:41,128 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:40:41,129 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:40:39" (1/3) ... [2023-11-19 07:40:41,131 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57cf7299 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:40:41, skipping insertion in model container [2023-11-19 07:40:41,131 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:39" (2/3) ... [2023-11-19 07:40:41,133 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57cf7299 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:40:41, skipping insertion in model container [2023-11-19 07:40:41,134 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:40:41" (3/3) ... [2023-11-19 07:40:41,136 INFO L112 eAbstractionObserver]: Analyzing ICFG mix014_power.oepc_pso.oepc_rmo.oepc.i [2023-11-19 07:40:41,147 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 07:40:41,161 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:40:41,161 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-19 07:40:41,162 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 07:40:41,265 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-19 07:40:41,311 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 147 places, 137 transitions, 290 flow [2023-11-19 07:40:41,387 INFO L124 PetriNetUnfolderBase]: 3/133 cut-off events. [2023-11-19 07:40:41,387 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:40:41,398 INFO L83 FinitePrefix]: Finished finitePrefix Result has 146 conditions, 133 events. 3/133 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 79 event pairs, 0 based on Foata normal form. 0/128 useless extension candidates. Maximal degree in co-relation 95. Up to 2 conditions per place. [2023-11-19 07:40:41,398 INFO L82 GeneralOperation]: Start removeDead. Operand has 147 places, 137 transitions, 290 flow [2023-11-19 07:40:41,404 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 143 places, 133 transitions, 278 flow [2023-11-19 07:40:41,408 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:40:41,418 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 143 places, 133 transitions, 278 flow [2023-11-19 07:40:41,421 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 143 places, 133 transitions, 278 flow [2023-11-19 07:40:41,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 143 places, 133 transitions, 278 flow [2023-11-19 07:40:41,467 INFO L124 PetriNetUnfolderBase]: 3/133 cut-off events. [2023-11-19 07:40:41,467 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:40:41,469 INFO L83 FinitePrefix]: Finished finitePrefix Result has 146 conditions, 133 events. 3/133 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 79 event pairs, 0 based on Foata normal form. 0/128 useless extension candidates. Maximal degree in co-relation 95. Up to 2 conditions per place. [2023-11-19 07:40:41,473 INFO L119 LiptonReduction]: Number of co-enabled transitions 3706 [2023-11-19 07:40:47,145 INFO L134 LiptonReduction]: Checked pairs total: 10437 [2023-11-19 07:40:47,145 INFO L136 LiptonReduction]: Total number of compositions: 111 [2023-11-19 07:40:47,181 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:40:47,188 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;@38358db3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:40:47,188 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-11-19 07:40:47,198 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:40:47,198 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2023-11-19 07:40:47,198 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:40:47,199 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:40:47,199 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-19 07:40:47,200 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-19 07:40:47,205 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:47,205 INFO L85 PathProgramCache]: Analyzing trace with hash 567339, now seen corresponding path program 1 times [2023-11-19 07:40:47,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:40:47,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032676092] [2023-11-19 07:40:47,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:47,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:40:47,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:47,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:40:47,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:40:47,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032676092] [2023-11-19 07:40:47,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032676092] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:40:47,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:40:47,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:40:47,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454308218] [2023-11-19 07:40:47,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:40:47,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:40:47,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:40:47,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:40:47,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:40:47,724 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 248 [2023-11-19 07:40:47,727 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 33 transitions, 78 flow. Second operand has 3 states, 3 states have (on average 121.0) internal successors, (363), 3 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 07:40:47,728 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:40:47,728 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 248 [2023-11-19 07:40:47,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:40:49,425 INFO L124 PetriNetUnfolderBase]: 5879/8510 cut-off events. [2023-11-19 07:40:49,425 INFO L125 PetriNetUnfolderBase]: For 77/77 co-relation queries the response was YES. [2023-11-19 07:40:49,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16654 conditions, 8510 events. 5879/8510 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 436. Compared 52655 event pairs, 1079 based on Foata normal form. 0/8172 useless extension candidates. Maximal degree in co-relation 16642. Up to 6367 conditions per place. [2023-11-19 07:40:49,505 INFO L140 encePairwiseOnDemand]: 244/248 looper letters, 43 selfloop transitions, 2 changer transitions 2/52 dead transitions. [2023-11-19 07:40:49,506 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 52 transitions, 219 flow [2023-11-19 07:40:49,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:40:49,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:40:49,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 410 transitions. [2023-11-19 07:40:49,522 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5510752688172043 [2023-11-19 07:40:49,522 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 410 transitions. [2023-11-19 07:40:49,523 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 410 transitions. [2023-11-19 07:40:49,525 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:40:49,528 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 410 transitions. [2023-11-19 07:40:49,534 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 136.66666666666666) internal successors, (410), 3 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:49,540 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 248.0) internal successors, (992), 4 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:49,541 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 248.0) internal successors, (992), 4 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:49,543 INFO L175 Difference]: Start difference. First operand has 45 places, 33 transitions, 78 flow. Second operand 3 states and 410 transitions. [2023-11-19 07:40:49,544 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 52 transitions, 219 flow [2023-11-19 07:40:49,548 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 52 transitions, 212 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-19 07:40:49,550 INFO L231 Difference]: Finished difference. Result has 42 places, 30 transitions, 72 flow [2023-11-19 07:40:49,552 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=248, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=72, PETRI_PLACES=42, PETRI_TRANSITIONS=30} [2023-11-19 07:40:49,556 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, -3 predicate places. [2023-11-19 07:40:49,556 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 30 transitions, 72 flow [2023-11-19 07:40:49,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 121.0) internal successors, (363), 3 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 07:40:49,557 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:40:49,557 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:40:49,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:40:49,558 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-19 07:40:49,558 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:49,559 INFO L85 PathProgramCache]: Analyzing trace with hash -1331784107, now seen corresponding path program 1 times [2023-11-19 07:40:49,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:40:49,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332740990] [2023-11-19 07:40:49,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:49,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:40:49,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:49,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:40:49,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:40:49,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332740990] [2023-11-19 07:40:49,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332740990] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:40:49,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:40:49,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:40:49,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406424804] [2023-11-19 07:40:49,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:40:49,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:40:49,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:40:49,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:40:49,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:40:49,993 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 248 [2023-11-19 07:40:49,994 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 30 transitions, 72 flow. Second operand has 4 states, 4 states have (on average 107.0) internal successors, (428), 4 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:49,995 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:40:49,995 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 248 [2023-11-19 07:40:49,995 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:40:55,436 INFO L124 PetriNetUnfolderBase]: 25803/34900 cut-off events. [2023-11-19 07:40:55,437 INFO L125 PetriNetUnfolderBase]: For 1145/1145 co-relation queries the response was YES. [2023-11-19 07:40:55,493 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71520 conditions, 34900 events. 25803/34900 cut-off events. For 1145/1145 co-relation queries the response was YES. Maximal size of possible extension queue 1036. Compared 191759 event pairs, 9305 based on Foata normal form. 1428/36328 useless extension candidates. Maximal degree in co-relation 71510. Up to 20929 conditions per place. [2023-11-19 07:40:55,642 INFO L140 encePairwiseOnDemand]: 238/248 looper letters, 47 selfloop transitions, 8 changer transitions 37/92 dead transitions. [2023-11-19 07:40:55,642 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 92 transitions, 390 flow [2023-11-19 07:40:55,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:40:55,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 07:40:55,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 614 transitions. [2023-11-19 07:40:55,647 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49516129032258066 [2023-11-19 07:40:55,648 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 614 transitions. [2023-11-19 07:40:55,648 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 614 transitions. [2023-11-19 07:40:55,649 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:40:55,649 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 614 transitions. [2023-11-19 07:40:55,653 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 122.8) internal successors, (614), 5 states have internal predecessors, (614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:55,659 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 248.0) internal successors, (1488), 6 states have internal predecessors, (1488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:55,661 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 248.0) internal successors, (1488), 6 states have internal predecessors, (1488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:55,661 INFO L175 Difference]: Start difference. First operand has 42 places, 30 transitions, 72 flow. Second operand 5 states and 614 transitions. [2023-11-19 07:40:55,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 92 transitions, 390 flow [2023-11-19 07:40:55,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 92 transitions, 380 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:40:55,668 INFO L231 Difference]: Finished difference. Result has 47 places, 37 transitions, 148 flow [2023-11-19 07:40:55,675 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=248, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=148, PETRI_PLACES=47, PETRI_TRANSITIONS=37} [2023-11-19 07:40:55,676 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 2 predicate places. [2023-11-19 07:40:55,677 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 37 transitions, 148 flow [2023-11-19 07:40:55,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 107.0) internal successors, (428), 4 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:55,678 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:40:55,678 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:40:55,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:40:55,678 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-19 07:40:55,679 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:55,679 INFO L85 PathProgramCache]: Analyzing trace with hash 1664300208, now seen corresponding path program 1 times [2023-11-19 07:40:55,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:40:55,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109914655] [2023-11-19 07:40:55,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:55,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:40:55,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:56,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:40:56,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:40:56,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109914655] [2023-11-19 07:40:56,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109914655] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:40:56,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:40:56,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:40:56,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77693376] [2023-11-19 07:40:56,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:40:56,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:40:56,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:40:56,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:40:56,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:40:56,088 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 248 [2023-11-19 07:40:56,089 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 37 transitions, 148 flow. Second operand has 5 states, 5 states have (on average 106.6) internal successors, (533), 5 states have internal predecessors, (533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:56,090 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:40:56,090 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 248 [2023-11-19 07:40:56,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:41:00,239 INFO L124 PetriNetUnfolderBase]: 22479/30596 cut-off events. [2023-11-19 07:41:00,239 INFO L125 PetriNetUnfolderBase]: For 21492/21492 co-relation queries the response was YES. [2023-11-19 07:41:00,292 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82390 conditions, 30596 events. 22479/30596 cut-off events. For 21492/21492 co-relation queries the response was YES. Maximal size of possible extension queue 896. Compared 163052 event pairs, 5169 based on Foata normal form. 1344/31940 useless extension candidates. Maximal degree in co-relation 82376. Up to 13763 conditions per place. [2023-11-19 07:41:00,415 INFO L140 encePairwiseOnDemand]: 238/248 looper letters, 59 selfloop transitions, 9 changer transitions 51/119 dead transitions. [2023-11-19 07:41:00,415 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 119 transitions, 680 flow [2023-11-19 07:41:00,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:41:00,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-19 07:41:00,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 839 transitions. [2023-11-19 07:41:00,419 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.483294930875576 [2023-11-19 07:41:00,420 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 839 transitions. [2023-11-19 07:41:00,420 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 839 transitions. [2023-11-19 07:41:00,421 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:41:00,421 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 839 transitions. [2023-11-19 07:41:00,424 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 119.85714285714286) internal successors, (839), 7 states have internal predecessors, (839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:41:00,429 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 248.0) internal successors, (1984), 8 states have internal predecessors, (1984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:41:00,431 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 248.0) internal successors, (1984), 8 states have internal predecessors, (1984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:41:00,431 INFO L175 Difference]: Start difference. First operand has 47 places, 37 transitions, 148 flow. Second operand 7 states and 839 transitions. [2023-11-19 07:41:00,431 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 119 transitions, 680 flow [2023-11-19 07:41:00,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 119 transitions, 626 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-11-19 07:41:00,740 INFO L231 Difference]: Finished difference. Result has 55 places, 42 transitions, 214 flow [2023-11-19 07:41:00,741 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=248, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=214, PETRI_PLACES=55, PETRI_TRANSITIONS=42} [2023-11-19 07:41:00,742 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 10 predicate places. [2023-11-19 07:41:00,742 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 42 transitions, 214 flow [2023-11-19 07:41:00,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 106.6) internal successors, (533), 5 states have internal predecessors, (533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:41:00,743 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:41:00,743 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:41:00,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 07:41:00,744 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-19 07:41:00,744 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:00,744 INFO L85 PathProgramCache]: Analyzing trace with hash -1288623108, now seen corresponding path program 1 times [2023-11-19 07:41:00,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:41:00,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668834570] [2023-11-19 07:41:00,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:00,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:41:00,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:00,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:41:00,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:41:00,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668834570] [2023-11-19 07:41:00,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668834570] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:41:00,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:41:00,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:41:00,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064707754] [2023-11-19 07:41:00,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:41:00,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:41:00,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:41:00,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:41:00,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:41:00,966 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 248 [2023-11-19 07:41:00,967 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 42 transitions, 214 flow. Second operand has 5 states, 5 states have (on average 106.8) internal successors, (534), 5 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:41:00,967 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:41:00,967 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 248 [2023-11-19 07:41:00,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:41:05,034 INFO L124 PetriNetUnfolderBase]: 19511/26604 cut-off events. [2023-11-19 07:41:05,034 INFO L125 PetriNetUnfolderBase]: For 37059/37059 co-relation queries the response was YES. [2023-11-19 07:41:05,090 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76734 conditions, 26604 events. 19511/26604 cut-off events. For 37059/37059 co-relation queries the response was YES. Maximal size of possible extension queue 712. Compared 144112 event pairs, 3497 based on Foata normal form. 960/27564 useless extension candidates. Maximal degree in co-relation 76714. Up to 12473 conditions per place. [2023-11-19 07:41:05,204 INFO L140 encePairwiseOnDemand]: 239/248 looper letters, 71 selfloop transitions, 12 changer transitions 44/127 dead transitions. [2023-11-19 07:41:05,204 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 127 transitions, 792 flow [2023-11-19 07:41:05,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:41:05,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-19 07:41:05,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 841 transitions. [2023-11-19 07:41:05,209 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48444700460829493 [2023-11-19 07:41:05,209 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 841 transitions. [2023-11-19 07:41:05,209 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 841 transitions. [2023-11-19 07:41:05,210 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:41:05,211 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 841 transitions. [2023-11-19 07:41:05,214 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 120.14285714285714) internal successors, (841), 7 states have internal predecessors, (841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:41:05,219 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 248.0) internal successors, (1984), 8 states have internal predecessors, (1984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:41:05,222 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 248.0) internal successors, (1984), 8 states have internal predecessors, (1984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:41:05,222 INFO L175 Difference]: Start difference. First operand has 55 places, 42 transitions, 214 flow. Second operand 7 states and 841 transitions. [2023-11-19 07:41:05,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 127 transitions, 792 flow [2023-11-19 07:41:05,877 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 127 transitions, 773 flow, removed 7 selfloop flow, removed 3 redundant places. [2023-11-19 07:41:05,879 INFO L231 Difference]: Finished difference. Result has 61 places, 48 transitions, 324 flow [2023-11-19 07:41:05,880 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=248, PETRI_DIFFERENCE_MINUEND_FLOW=203, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=324, PETRI_PLACES=61, PETRI_TRANSITIONS=48} [2023-11-19 07:41:05,881 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 16 predicate places. [2023-11-19 07:41:05,881 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 48 transitions, 324 flow [2023-11-19 07:41:05,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 106.8) internal successors, (534), 5 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:41:05,882 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:41:05,882 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:41:05,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 07:41:05,883 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-19 07:41:05,883 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:05,883 INFO L85 PathProgramCache]: Analyzing trace with hash -1310415463, now seen corresponding path program 1 times [2023-11-19 07:41:05,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:41:05,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400565323] [2023-11-19 07:41:05,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:05,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:41:05,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:06,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:41:06,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:41:06,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400565323] [2023-11-19 07:41:06,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400565323] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:41:06,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:41:06,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:41:06,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396905990] [2023-11-19 07:41:06,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:41:06,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:41:06,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:41:06,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:41:06,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:41:06,096 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 248 [2023-11-19 07:41:06,097 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 48 transitions, 324 flow. Second operand has 4 states, 4 states have (on average 117.5) internal successors, (470), 4 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:41:06,097 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:41:06,098 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 248 [2023-11-19 07:41:06,098 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:41:08,574 INFO L124 PetriNetUnfolderBase]: 10062/14925 cut-off events. [2023-11-19 07:41:08,574 INFO L125 PetriNetUnfolderBase]: For 15298/16413 co-relation queries the response was YES. [2023-11-19 07:41:08,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39464 conditions, 14925 events. 10062/14925 cut-off events. For 15298/16413 co-relation queries the response was YES. Maximal size of possible extension queue 655. Compared 95314 event pairs, 2092 based on Foata normal form. 1219/15582 useless extension candidates. Maximal degree in co-relation 39439. Up to 6668 conditions per place. [2023-11-19 07:41:08,696 INFO L140 encePairwiseOnDemand]: 241/248 looper letters, 64 selfloop transitions, 6 changer transitions 0/89 dead transitions. [2023-11-19 07:41:08,697 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 89 transitions, 632 flow [2023-11-19 07:41:08,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:41:08,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 07:41:08,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 516 transitions. [2023-11-19 07:41:08,699 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5201612903225806 [2023-11-19 07:41:08,700 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 516 transitions. [2023-11-19 07:41:08,700 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 516 transitions. [2023-11-19 07:41:08,700 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:41:08,701 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 516 transitions. [2023-11-19 07:41:08,702 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 129.0) internal successors, (516), 4 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:41:08,705 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 248.0) internal successors, (1240), 5 states have internal predecessors, (1240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:41:08,705 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 248.0) internal successors, (1240), 5 states have internal predecessors, (1240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:41:08,706 INFO L175 Difference]: Start difference. First operand has 61 places, 48 transitions, 324 flow. Second operand 4 states and 516 transitions. [2023-11-19 07:41:08,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 89 transitions, 632 flow [2023-11-19 07:41:08,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 89 transitions, 604 flow, removed 12 selfloop flow, removed 4 redundant places. [2023-11-19 07:41:08,884 INFO L231 Difference]: Finished difference. Result has 59 places, 53 transitions, 346 flow [2023-11-19 07:41:08,884 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=248, PETRI_DIFFERENCE_MINUEND_FLOW=300, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=346, PETRI_PLACES=59, PETRI_TRANSITIONS=53} [2023-11-19 07:41:08,887 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 14 predicate places. [2023-11-19 07:41:08,887 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 53 transitions, 346 flow [2023-11-19 07:41:08,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 117.5) internal successors, (470), 4 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:41:08,888 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:41:08,888 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:41:08,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 07:41:08,888 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-19 07:41:08,889 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:08,889 INFO L85 PathProgramCache]: Analyzing trace with hash -1679258584, now seen corresponding path program 1 times [2023-11-19 07:41:08,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:41:08,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146295542] [2023-11-19 07:41:08,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:08,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:41:08,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:09,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:41:09,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:41:09,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146295542] [2023-11-19 07:41:09,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146295542] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:41:09,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:41:09,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:41:09,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399369310] [2023-11-19 07:41:09,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:41:09,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:41:09,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:41:09,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:41:09,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:41:09,168 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 248 [2023-11-19 07:41:09,169 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 53 transitions, 346 flow. Second operand has 5 states, 5 states have (on average 117.2) internal successors, (586), 5 states have internal predecessors, (586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:41:09,169 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:41:09,169 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 248 [2023-11-19 07:41:09,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:41:11,121 INFO L124 PetriNetUnfolderBase]: 7700/11824 cut-off events. [2023-11-19 07:41:11,121 INFO L125 PetriNetUnfolderBase]: For 12688/13502 co-relation queries the response was YES. [2023-11-19 07:41:11,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36385 conditions, 11824 events. 7700/11824 cut-off events. For 12688/13502 co-relation queries the response was YES. Maximal size of possible extension queue 557. Compared 77747 event pairs, 1784 based on Foata normal form. 773/12071 useless extension candidates. Maximal degree in co-relation 36360. Up to 4402 conditions per place. [2023-11-19 07:41:11,232 INFO L140 encePairwiseOnDemand]: 241/248 looper letters, 82 selfloop transitions, 10 changer transitions 0/111 dead transitions. [2023-11-19 07:41:11,232 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 111 transitions, 789 flow [2023-11-19 07:41:11,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:41:11,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 07:41:11,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 648 transitions. [2023-11-19 07:41:11,237 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5225806451612903 [2023-11-19 07:41:11,237 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 648 transitions. [2023-11-19 07:41:11,237 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 648 transitions. [2023-11-19 07:41:11,238 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:41:11,238 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 648 transitions. [2023-11-19 07:41:11,241 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 129.6) internal successors, (648), 5 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:41:11,244 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 248.0) internal successors, (1488), 6 states have internal predecessors, (1488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:41:11,245 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 248.0) internal successors, (1488), 6 states have internal predecessors, (1488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:41:11,245 INFO L175 Difference]: Start difference. First operand has 59 places, 53 transitions, 346 flow. Second operand 5 states and 648 transitions. [2023-11-19 07:41:11,246 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 111 transitions, 789 flow [2023-11-19 07:41:11,281 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 111 transitions, 774 flow, removed 6 selfloop flow, removed 3 redundant places. [2023-11-19 07:41:11,283 INFO L231 Difference]: Finished difference. Result has 62 places, 58 transitions, 405 flow [2023-11-19 07:41:11,284 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=248, PETRI_DIFFERENCE_MINUEND_FLOW=338, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=405, PETRI_PLACES=62, PETRI_TRANSITIONS=58} [2023-11-19 07:41:11,285 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 17 predicate places. [2023-11-19 07:41:11,285 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 58 transitions, 405 flow [2023-11-19 07:41:11,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 117.2) internal successors, (586), 5 states have internal predecessors, (586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:41:11,286 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:41:11,286 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:41:11,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 07:41:11,287 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-19 07:41:11,287 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:11,288 INFO L85 PathProgramCache]: Analyzing trace with hash 1417118527, now seen corresponding path program 1 times [2023-11-19 07:41:11,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:41:11,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347472031] [2023-11-19 07:41:11,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:11,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:41:11,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:11,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:41:11,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:41:11,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347472031] [2023-11-19 07:41:11,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347472031] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:41:11,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:41:11,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:41:11,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559604157] [2023-11-19 07:41:11,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:41:11,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:41:11,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:41:11,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:41:11,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:41:11,773 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 248 [2023-11-19 07:41:11,775 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 58 transitions, 405 flow. Second operand has 6 states, 6 states have (on average 117.16666666666667) internal successors, (703), 6 states have internal predecessors, (703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:41:11,775 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:41:11,775 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 248 [2023-11-19 07:41:11,775 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:41:13,753 INFO L124 PetriNetUnfolderBase]: 7030/10798 cut-off events. [2023-11-19 07:41:13,753 INFO L125 PetriNetUnfolderBase]: For 20274/21054 co-relation queries the response was YES. [2023-11-19 07:41:13,823 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37333 conditions, 10798 events. 7030/10798 cut-off events. For 20274/21054 co-relation queries the response was YES. Maximal size of possible extension queue 552. Compared 70867 event pairs, 1700 based on Foata normal form. 300/10584 useless extension candidates. Maximal degree in co-relation 37307. Up to 4402 conditions per place. [2023-11-19 07:41:13,874 INFO L140 encePairwiseOnDemand]: 241/248 looper letters, 94 selfloop transitions, 14 changer transitions 0/127 dead transitions. [2023-11-19 07:41:13,874 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 127 transitions, 928 flow [2023-11-19 07:41:13,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:41:13,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:41:13,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 778 transitions. [2023-11-19 07:41:13,880 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5228494623655914 [2023-11-19 07:41:13,880 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 778 transitions. [2023-11-19 07:41:13,880 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 778 transitions. [2023-11-19 07:41:13,881 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:41:13,882 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 778 transitions. [2023-11-19 07:41:13,885 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 129.66666666666666) internal successors, (778), 6 states have internal predecessors, (778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:41:13,889 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 248.0) internal successors, (1736), 7 states have internal predecessors, (1736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:41:13,891 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 248.0) internal successors, (1736), 7 states have internal predecessors, (1736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:41:13,891 INFO L175 Difference]: Start difference. First operand has 62 places, 58 transitions, 405 flow. Second operand 6 states and 778 transitions. [2023-11-19 07:41:13,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 127 transitions, 928 flow [2023-11-19 07:41:13,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 127 transitions, 912 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-11-19 07:41:13,951 INFO L231 Difference]: Finished difference. Result has 67 places, 63 transitions, 475 flow [2023-11-19 07:41:13,951 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=248, PETRI_DIFFERENCE_MINUEND_FLOW=390, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=475, PETRI_PLACES=67, PETRI_TRANSITIONS=63} [2023-11-19 07:41:13,953 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 22 predicate places. [2023-11-19 07:41:13,953 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 63 transitions, 475 flow [2023-11-19 07:41:13,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 117.16666666666667) internal successors, (703), 6 states have internal predecessors, (703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:41:13,954 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:41:13,954 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:41:13,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 07:41:13,955 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-19 07:41:13,956 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:13,957 INFO L85 PathProgramCache]: Analyzing trace with hash -644017644, now seen corresponding path program 1 times [2023-11-19 07:41:13,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:41:13,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043696170] [2023-11-19 07:41:13,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:13,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:41:14,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:15,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:41:15,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:41:15,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043696170] [2023-11-19 07:41:15,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043696170] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:41:15,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:41:15,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 07:41:15,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666749266] [2023-11-19 07:41:15,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:41:15,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 07:41:15,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:41:15,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 07:41:15,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:41:15,462 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 248 [2023-11-19 07:41:15,464 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 63 transitions, 475 flow. Second operand has 8 states, 8 states have (on average 113.75) internal successors, (910), 8 states have internal predecessors, (910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:41:15,464 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:41:15,464 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 248 [2023-11-19 07:41:15,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:41:17,769 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([422] L831-->L847: Formula: (let ((.cse10 (= (mod v_~a$r_buff1_thd4~0_60 256) 0)) (.cse7 (= (mod v_~a$r_buff0_thd4~0_62 256) 0))) (let ((.cse8 (not .cse7)) (.cse3 (and (= (mod v_~a$w_buff1_used~0_133 256) 0) .cse7)) (.cse4 (and .cse7 .cse10)) (.cse11 (= (mod v_~a$w_buff0_used~0_148 256) 0))) (let ((.cse0 (or .cse3 .cse4 .cse11)) (.cse1 (and .cse8 (not .cse11))) (.cse2 (not (= (mod v_~weak$$choice2~0_32 256) 0))) (.cse6 (= (mod v_~a$w_buff1_used~0_132 256) 0)) (.cse5 (= (mod v_~a$w_buff0_used~0_147 256) 0))) (and (= v_~a$w_buff0~0_61 v_~a$w_buff0~0_60) (= (ite .cse0 v_~a~0_93 (ite .cse1 v_~a$w_buff0~0_61 v_~a$w_buff1~0_64)) v_~__unbuffered_p3_EBX~0_10) (= v_~a$w_buff1_used~0_132 (ite .cse2 v_~a$w_buff1_used~0_133 (ite (or .cse3 .cse4 .cse5) v_~a$w_buff1_used~0_133 0))) (= v_~a$flush_delayed~0_25 0) (= (ite .cse2 v_~a$w_buff0_used~0_148 (ite .cse0 v_~a$w_buff0_used~0_148 (ite .cse1 0 v_~a$w_buff0_used~0_148))) v_~a$w_buff0_used~0_147) (= v_~a~0_93 v_~a$mem_tmp~0_18) (= v_~a$r_buff0_thd4~0_61 (ite .cse2 v_~a$r_buff0_thd4~0_62 (ite (or (and .cse6 .cse7) .cse4 .cse5) v_~a$r_buff0_thd4~0_62 (ite (and (not .cse5) .cse8) 0 v_~a$r_buff0_thd4~0_62)))) (= v_~a$w_buff1~0_64 v_~a$w_buff1~0_63) (= v_~a~0_92 (ite .cse2 v_~a$mem_tmp~0_18 v_~__unbuffered_p3_EBX~0_10)) (= v_~a$r_buff1_thd4~0_59 (ite .cse2 v_~a$r_buff1_thd4~0_60 (ite (let ((.cse9 (= (mod v_~a$r_buff0_thd4~0_61 256) 0))) (or (and .cse9 .cse10) (and .cse6 .cse9) .cse5)) v_~a$r_buff1_thd4~0_60 0))))))) InVars {~a~0=v_~a~0_93, ~a$w_buff1~0=v_~a$w_buff1~0_64, ~a$w_buff0~0=v_~a$w_buff0~0_61, ~a$r_buff1_thd4~0=v_~a$r_buff1_thd4~0_60, ~a$w_buff0_used~0=v_~a$w_buff0_used~0_148, ~a$w_buff1_used~0=v_~a$w_buff1_used~0_133, ~a$r_buff0_thd4~0=v_~a$r_buff0_thd4~0_62} OutVars{~a$r_buff1_thd4~0=v_~a$r_buff1_thd4~0_59, ~a$w_buff0_used~0=v_~a$w_buff0_used~0_147, ~__unbuffered_p3_EBX~0=v_~__unbuffered_p3_EBX~0_10, ~a$r_buff0_thd4~0=v_~a$r_buff0_thd4~0_61, P3Thread1of1ForFork2_#t~nondet4=|v_P3Thread1of1ForFork2_#t~nondet4_1|, ~a~0=v_~a~0_92, ~a$mem_tmp~0=v_~a$mem_tmp~0_18, ~weak$$choice0~0=v_~weak$$choice0~0_7, ~a$w_buff1~0=v_~a$w_buff1~0_63, ~a$flush_delayed~0=v_~a$flush_delayed~0_25, ~a$w_buff0~0=v_~a$w_buff0~0_60, ~a$w_buff1_used~0=v_~a$w_buff1_used~0_132, ~weak$$choice2~0=v_~weak$$choice2~0_32, P3Thread1of1ForFork2_#t~nondet3=|v_P3Thread1of1ForFork2_#t~nondet3_1|} AuxVars[] AssignedVars[~a$r_buff1_thd4~0, ~a$w_buff0_used~0, ~__unbuffered_p3_EBX~0, ~a$r_buff0_thd4~0, P3Thread1of1ForFork2_#t~nondet4, ~a~0, ~a$mem_tmp~0, ~weak$$choice0~0, ~a$w_buff1~0, ~a$flush_delayed~0, ~a$w_buff0~0, ~a$w_buff1_used~0, ~weak$$choice2~0, P3Thread1of1ForFork2_#t~nondet3][81], [Black: 184#(or (not (= 2 ~__unbuffered_p1_EAX~0)) (not (= ~__unbuffered_p3_EAX~0 1)) (not (= ~__unbuffered_p1_EBX~0 0)) (not (= 2 ~x~0)) (not (= ~__unbuffered_p3_EBX~0 0)) (not (= ~__unbuffered_p2_EAX~0 0))), 109#P0EXITtrue, Black: 200#(and (<= ~main$tmp_guard0~0 (* (div ~main$tmp_guard0~0 256) 256)) (<= 0 ~main$tmp_guard0~0)), Black: 202#(and (= ~__unbuffered_cnt~0 0) (<= ~main$tmp_guard0~0 (* (div ~main$tmp_guard0~0 256) 256)) (<= 0 ~main$tmp_guard0~0)), P2Thread1of1ForFork0InUse, 214#(and (<= ~main$tmp_guard0~0 (* (div ~main$tmp_guard0~0 256) 256)) (<= ~__unbuffered_cnt~0 1)), P0Thread1of1ForFork1InUse, P3Thread1of1ForFork2InUse, P1Thread1of1ForFork3InUse, 181#true, 165#true, 242#(and (= ~a$r_buff1_thd4~0 0) (= ~a$w_buff1_used~0 0) (= ~__unbuffered_p3_EBX~0 1) (= ~a~0 1) (= ~a$w_buff0~0 1) (= ~a$w_buff0_used~0 (* 256 (div ~a$w_buff0_used~0 256)))), Black: 210#(< ~main$tmp_guard0~0 (+ 1 (* (div ~main$tmp_guard0~0 256) 256))), 19#L798true, Black: 156#(or (not (= 2 ~__unbuffered_p1_EAX~0)) (not (= ~__unbuffered_p3_EAX~0 1)) (not (= ~__unbuffered_p1_EBX~0 0)) (not (= 2 ~x~0)) (not (= ~__unbuffered_p3_EBX~0 0)) (not (= ~__unbuffered_p2_EAX~0 0))), Black: 159#(and (not (= |ULTIMATE.start___VERIFIER_assert_~expression#1| 0)) (or (not (= 2 ~__unbuffered_p1_EAX~0)) (not (= ~__unbuffered_p3_EAX~0 1)) (not (= ~__unbuffered_p1_EBX~0 0)) (not (= 2 ~x~0)) (not (= ~__unbuffered_p3_EBX~0 0)) (not (= ~__unbuffered_p2_EAX~0 0)))), 59#L847true, Black: 229#(and (<= ~__unbuffered_cnt~0 2) (<= ~main$tmp_guard0~0 (* (div ~main$tmp_guard0~0 256) 256)) (<= 0 ~main$tmp_guard0~0)), Black: 223#(and (<= ~main$tmp_guard0~0 (* (div ~main$tmp_guard0~0 256) 256)) (<= 0 ~main$tmp_guard0~0)), 116#L881true, 112#L811true, Black: 168#(or (not (= 2 ~__unbuffered_p1_EAX~0)) (not (= ~__unbuffered_p3_EAX~0 1)) (not (= ~__unbuffered_p1_EBX~0 0)) (not (= 2 ~x~0)) (not (= ~__unbuffered_p3_EBX~0 0)) (not (= ~__unbuffered_p2_EAX~0 0))), 227#(and (<= ~main$tmp_guard0~0 (* (div ~main$tmp_guard0~0 256) 256)) (<= ~__unbuffered_cnt~0 1) (<= 0 ~main$tmp_guard0~0)), Black: 167#(= ~__unbuffered_p3_EAX~0 0), Black: 183#(= ~__unbuffered_p1_EAX~0 0)]) [2023-11-19 07:41:17,769 INFO L294 olderBase$Statistics]: this new event has 22 ancestors and is not cut-off event [2023-11-19 07:41:17,769 INFO L297 olderBase$Statistics]: existing Event has 22 ancestors and is not cut-off event [2023-11-19 07:41:17,769 INFO L297 olderBase$Statistics]: existing Event has 22 ancestors and is not cut-off event [2023-11-19 07:41:17,769 INFO L297 olderBase$Statistics]: existing Event has 22 ancestors and is not cut-off event [2023-11-19 07:41:17,992 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([422] L831-->L847: Formula: (let ((.cse10 (= (mod v_~a$r_buff1_thd4~0_60 256) 0)) (.cse7 (= (mod v_~a$r_buff0_thd4~0_62 256) 0))) (let ((.cse8 (not .cse7)) (.cse3 (and (= (mod v_~a$w_buff1_used~0_133 256) 0) .cse7)) (.cse4 (and .cse7 .cse10)) (.cse11 (= (mod v_~a$w_buff0_used~0_148 256) 0))) (let ((.cse0 (or .cse3 .cse4 .cse11)) (.cse1 (and .cse8 (not .cse11))) (.cse2 (not (= (mod v_~weak$$choice2~0_32 256) 0))) (.cse6 (= (mod v_~a$w_buff1_used~0_132 256) 0)) (.cse5 (= (mod v_~a$w_buff0_used~0_147 256) 0))) (and (= v_~a$w_buff0~0_61 v_~a$w_buff0~0_60) (= (ite .cse0 v_~a~0_93 (ite .cse1 v_~a$w_buff0~0_61 v_~a$w_buff1~0_64)) v_~__unbuffered_p3_EBX~0_10) (= v_~a$w_buff1_used~0_132 (ite .cse2 v_~a$w_buff1_used~0_133 (ite (or .cse3 .cse4 .cse5) v_~a$w_buff1_used~0_133 0))) (= v_~a$flush_delayed~0_25 0) (= (ite .cse2 v_~a$w_buff0_used~0_148 (ite .cse0 v_~a$w_buff0_used~0_148 (ite .cse1 0 v_~a$w_buff0_used~0_148))) v_~a$w_buff0_used~0_147) (= v_~a~0_93 v_~a$mem_tmp~0_18) (= v_~a$r_buff0_thd4~0_61 (ite .cse2 v_~a$r_buff0_thd4~0_62 (ite (or (and .cse6 .cse7) .cse4 .cse5) v_~a$r_buff0_thd4~0_62 (ite (and (not .cse5) .cse8) 0 v_~a$r_buff0_thd4~0_62)))) (= v_~a$w_buff1~0_64 v_~a$w_buff1~0_63) (= v_~a~0_92 (ite .cse2 v_~a$mem_tmp~0_18 v_~__unbuffered_p3_EBX~0_10)) (= v_~a$r_buff1_thd4~0_59 (ite .cse2 v_~a$r_buff1_thd4~0_60 (ite (let ((.cse9 (= (mod v_~a$r_buff0_thd4~0_61 256) 0))) (or (and .cse9 .cse10) (and .cse6 .cse9) .cse5)) v_~a$r_buff1_thd4~0_60 0))))))) InVars {~a~0=v_~a~0_93, ~a$w_buff1~0=v_~a$w_buff1~0_64, ~a$w_buff0~0=v_~a$w_buff0~0_61, ~a$r_buff1_thd4~0=v_~a$r_buff1_thd4~0_60, ~a$w_buff0_used~0=v_~a$w_buff0_used~0_148, ~a$w_buff1_used~0=v_~a$w_buff1_used~0_133, ~a$r_buff0_thd4~0=v_~a$r_buff0_thd4~0_62} OutVars{~a$r_buff1_thd4~0=v_~a$r_buff1_thd4~0_59, ~a$w_buff0_used~0=v_~a$w_buff0_used~0_147, ~__unbuffered_p3_EBX~0=v_~__unbuffered_p3_EBX~0_10, ~a$r_buff0_thd4~0=v_~a$r_buff0_thd4~0_61, P3Thread1of1ForFork2_#t~nondet4=|v_P3Thread1of1ForFork2_#t~nondet4_1|, ~a~0=v_~a~0_92, ~a$mem_tmp~0=v_~a$mem_tmp~0_18, ~weak$$choice0~0=v_~weak$$choice0~0_7, ~a$w_buff1~0=v_~a$w_buff1~0_63, ~a$flush_delayed~0=v_~a$flush_delayed~0_25, ~a$w_buff0~0=v_~a$w_buff0~0_60, ~a$w_buff1_used~0=v_~a$w_buff1_used~0_132, ~weak$$choice2~0=v_~weak$$choice2~0_32, P3Thread1of1ForFork2_#t~nondet3=|v_P3Thread1of1ForFork2_#t~nondet3_1|} AuxVars[] AssignedVars[~a$r_buff1_thd4~0, ~a$w_buff0_used~0, ~__unbuffered_p3_EBX~0, ~a$r_buff0_thd4~0, P3Thread1of1ForFork2_#t~nondet4, ~a~0, ~a$mem_tmp~0, ~weak$$choice0~0, ~a$w_buff1~0, ~a$flush_delayed~0, ~a$w_buff0~0, ~a$w_buff1_used~0, ~weak$$choice2~0, P3Thread1of1ForFork2_#t~nondet3][81], [Black: 156#(or (not (= 2 ~__unbuffered_p1_EAX~0)) (not (= ~__unbuffered_p3_EAX~0 1)) (not (= ~__unbuffered_p1_EBX~0 0)) (not (= 2 ~x~0)) (not (= ~__unbuffered_p3_EBX~0 0)) (not (= ~__unbuffered_p2_EAX~0 0))), Black: 184#(or (not (= 2 ~__unbuffered_p1_EAX~0)) (not (= ~__unbuffered_p3_EAX~0 1)) (not (= ~__unbuffered_p1_EBX~0 0)) (not (= 2 ~x~0)) (not (= ~__unbuffered_p3_EBX~0 0)) (not (= ~__unbuffered_p2_EAX~0 0))), Black: 159#(and (not (= |ULTIMATE.start___VERIFIER_assert_~expression#1| 0)) (or (not (= 2 ~__unbuffered_p1_EAX~0)) (not (= ~__unbuffered_p3_EAX~0 1)) (not (= ~__unbuffered_p1_EBX~0 0)) (not (= 2 ~x~0)) (not (= ~__unbuffered_p3_EBX~0 0)) (not (= ~__unbuffered_p2_EAX~0 0)))), 59#L847true, 229#(and (<= ~__unbuffered_cnt~0 2) (<= ~main$tmp_guard0~0 (* (div ~main$tmp_guard0~0 256) 256)) (<= 0 ~main$tmp_guard0~0)), Black: 223#(and (<= ~main$tmp_guard0~0 (* (div ~main$tmp_guard0~0 256) 256)) (<= 0 ~main$tmp_guard0~0)), 210#(< ~main$tmp_guard0~0 (+ 1 (* (div ~main$tmp_guard0~0 256) 256))), 109#P0EXITtrue, Black: 200#(and (<= ~main$tmp_guard0~0 (* (div ~main$tmp_guard0~0 256) 256)) (<= 0 ~main$tmp_guard0~0)), Black: 202#(and (= ~__unbuffered_cnt~0 0) (<= ~main$tmp_guard0~0 (* (div ~main$tmp_guard0~0 256) 256)) (<= 0 ~main$tmp_guard0~0)), P2Thread1of1ForFork0InUse, P0Thread1of1ForFork1InUse, 115#P1EXITtrue, 116#L881true, 112#L811true, P3Thread1of1ForFork2InUse, Black: 168#(or (not (= 2 ~__unbuffered_p1_EAX~0)) (not (= ~__unbuffered_p3_EAX~0 1)) (not (= ~__unbuffered_p1_EBX~0 0)) (not (= 2 ~x~0)) (not (= ~__unbuffered_p3_EBX~0 0)) (not (= ~__unbuffered_p2_EAX~0 0))), Black: 167#(= ~__unbuffered_p3_EAX~0 0), P1Thread1of1ForFork3InUse, 181#true, Black: 214#(and (<= ~main$tmp_guard0~0 (* (div ~main$tmp_guard0~0 256) 256)) (<= ~__unbuffered_cnt~0 1)), 165#true, 242#(and (= ~a$r_buff1_thd4~0 0) (= ~a$w_buff1_used~0 0) (= ~__unbuffered_p3_EBX~0 1) (= ~a~0 1) (= ~a$w_buff0~0 1) (= ~a$w_buff0_used~0 (* 256 (div ~a$w_buff0_used~0 256)))), Black: 183#(= ~__unbuffered_p1_EAX~0 0)]) [2023-11-19 07:41:17,992 INFO L294 olderBase$Statistics]: this new event has 23 ancestors and is not cut-off event [2023-11-19 07:41:17,993 INFO L297 olderBase$Statistics]: existing Event has 23 ancestors and is not cut-off event [2023-11-19 07:41:17,993 INFO L297 olderBase$Statistics]: existing Event has 23 ancestors and is not cut-off event [2023-11-19 07:41:17,993 INFO L297 olderBase$Statistics]: existing Event has 23 ancestors and is not cut-off event [2023-11-19 07:41:18,604 INFO L124 PetriNetUnfolderBase]: 12512/19839 cut-off events. [2023-11-19 07:41:18,604 INFO L125 PetriNetUnfolderBase]: For 54454/55915 co-relation queries the response was YES. [2023-11-19 07:41:18,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75404 conditions, 19839 events. 12512/19839 cut-off events. For 54454/55915 co-relation queries the response was YES. Maximal size of possible extension queue 1095. Compared 146561 event pairs, 1954 based on Foata normal form. 83/19471 useless extension candidates. Maximal degree in co-relation 75376. Up to 8171 conditions per place. [2023-11-19 07:41:18,824 INFO L140 encePairwiseOnDemand]: 238/248 looper letters, 136 selfloop transitions, 11 changer transitions 35/201 dead transitions. [2023-11-19 07:41:18,824 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 201 transitions, 1769 flow [2023-11-19 07:41:18,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:41:18,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-19 07:41:18,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 884 transitions. [2023-11-19 07:41:18,831 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5092165898617511 [2023-11-19 07:41:18,831 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 884 transitions. [2023-11-19 07:41:18,831 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 884 transitions. [2023-11-19 07:41:18,832 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:41:18,832 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 884 transitions. [2023-11-19 07:41:18,836 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 126.28571428571429) internal successors, (884), 7 states have internal predecessors, (884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:41:18,841 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 248.0) internal successors, (1984), 8 states have internal predecessors, (1984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:41:18,842 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 248.0) internal successors, (1984), 8 states have internal predecessors, (1984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:41:18,843 INFO L175 Difference]: Start difference. First operand has 67 places, 63 transitions, 475 flow. Second operand 7 states and 884 transitions. [2023-11-19 07:41:18,843 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 201 transitions, 1769 flow [2023-11-19 07:41:21,462 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 201 transitions, 1636 flow, removed 36 selfloop flow, removed 3 redundant places. [2023-11-19 07:41:21,466 INFO L231 Difference]: Finished difference. Result has 74 places, 72 transitions, 560 flow [2023-11-19 07:41:21,466 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=248, PETRI_DIFFERENCE_MINUEND_FLOW=444, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=560, PETRI_PLACES=74, PETRI_TRANSITIONS=72} [2023-11-19 07:41:21,467 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 29 predicate places. [2023-11-19 07:41:21,467 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 72 transitions, 560 flow [2023-11-19 07:41:21,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 113.75) internal successors, (910), 8 states have internal predecessors, (910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:41:21,468 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:41:21,469 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:41:21,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-19 07:41:21,469 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-19 07:41:21,470 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:21,470 INFO L85 PathProgramCache]: Analyzing trace with hash 2020023090, now seen corresponding path program 2 times [2023-11-19 07:41:21,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:41:21,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102206594] [2023-11-19 07:41:21,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:21,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:41:21,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:22,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:41:22,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:41:22,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102206594] [2023-11-19 07:41:22,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102206594] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:41:22,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:41:22,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 07:41:22,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572830835] [2023-11-19 07:41:22,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:41:22,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 07:41:22,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:41:22,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 07:41:22,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:41:22,915 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 248 [2023-11-19 07:41:22,918 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 72 transitions, 560 flow. Second operand has 8 states, 8 states have (on average 113.75) internal successors, (910), 8 states have internal predecessors, (910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:41:22,918 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:41:22,918 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 248 [2023-11-19 07:41:22,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand