./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe020_power.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_07df8145-874f-4413-8820-ebab382956cc/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07df8145-874f-4413-8820-ebab382956cc/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_07df8145-874f-4413-8820-ebab382956cc/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07df8145-874f-4413-8820-ebab382956cc/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe020_power.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07df8145-874f-4413-8820-ebab382956cc/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_07df8145-874f-4413-8820-ebab382956cc/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 cd91eb07499c204f7750c4a87fd11eb7780a100da5928fd001cd5e1a53feff12 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:41:16,955 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:41:17,058 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07df8145-874f-4413-8820-ebab382956cc/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-19 07:41:17,062 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:41:17,063 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:41:17,086 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:41:17,087 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:41:17,088 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:41:17,088 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:41:17,089 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:41:17,090 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:41:17,090 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:41:17,091 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:41:17,091 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:41:17,092 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:41:17,092 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:41:17,093 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:41:17,093 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:41:17,094 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:41:17,094 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:41:17,095 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:41:17,095 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:41:17,096 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:41:17,096 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:41:17,097 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:41:17,097 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:41:17,097 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:41:17,098 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:41:17,098 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:41:17,099 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:41:17,099 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:41:17,099 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:41:17,100 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:41:17,100 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:41:17,100 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:41:17,100 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:41:17,101 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:41:17,101 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:41:17,101 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:41:17,101 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_07df8145-874f-4413-8820-ebab382956cc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07df8145-874f-4413-8820-ebab382956cc/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cd91eb07499c204f7750c4a87fd11eb7780a100da5928fd001cd5e1a53feff12 [2023-11-19 07:41:17,428 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:41:17,475 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:41:17,478 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:41:17,480 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:41:17,480 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:41:17,482 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07df8145-874f-4413-8820-ebab382956cc/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/pthread-wmm/safe020_power.i [2023-11-19 07:41:20,571 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:41:20,876 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:41:20,877 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07df8145-874f-4413-8820-ebab382956cc/sv-benchmarks/c/pthread-wmm/safe020_power.i [2023-11-19 07:41:20,900 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07df8145-874f-4413-8820-ebab382956cc/bin/uautomizer-verify-uCwYo4JHxu/data/55cb86eb4/6d84a9e3413f421184013d41b23e7d15/FLAG7198ec361 [2023-11-19 07:41:20,916 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07df8145-874f-4413-8820-ebab382956cc/bin/uautomizer-verify-uCwYo4JHxu/data/55cb86eb4/6d84a9e3413f421184013d41b23e7d15 [2023-11-19 07:41:20,919 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:41:20,920 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:41:20,922 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:41:20,922 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:41:20,932 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:41:20,933 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:41:20" (1/1) ... [2023-11-19 07:41:20,935 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6146f2e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:20, skipping insertion in model container [2023-11-19 07:41:20,935 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:41:20" (1/1) ... [2023-11-19 07:41:20,995 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:41:21,198 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_07df8145-874f-4413-8820-ebab382956cc/sv-benchmarks/c/pthread-wmm/safe020_power.i[990,1003] [2023-11-19 07:41:21,606 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:41:21,624 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:41:21,638 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_07df8145-874f-4413-8820-ebab382956cc/sv-benchmarks/c/pthread-wmm/safe020_power.i[990,1003] [2023-11-19 07:41:21,731 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:41:21,812 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:41:21,812 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:41:21,820 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:41:21,821 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:21 WrapperNode [2023-11-19 07:41:21,821 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:41:21,823 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:41:21,823 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:41:21,823 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:41:21,831 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:21" (1/1) ... [2023-11-19 07:41:21,873 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:21" (1/1) ... [2023-11-19 07:41:21,907 INFO L138 Inliner]: procedures = 176, calls = 77, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 176 [2023-11-19 07:41:21,915 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:41:21,915 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:41:21,916 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:41:21,916 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:41:21,939 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:21" (1/1) ... [2023-11-19 07:41:21,940 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:21" (1/1) ... [2023-11-19 07:41:21,945 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:21" (1/1) ... [2023-11-19 07:41:21,946 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:21" (1/1) ... [2023-11-19 07:41:21,965 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:21" (1/1) ... [2023-11-19 07:41:21,968 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:21" (1/1) ... [2023-11-19 07:41:21,972 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:21" (1/1) ... [2023-11-19 07:41:21,975 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:21" (1/1) ... [2023-11-19 07:41:21,982 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:41:21,983 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:41:21,983 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:41:21,984 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:41:21,984 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:21" (1/1) ... [2023-11-19 07:41:21,991 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:41:22,018 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07df8145-874f-4413-8820-ebab382956cc/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:22,035 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07df8145-874f-4413-8820-ebab382956cc/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:41:22,037 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07df8145-874f-4413-8820-ebab382956cc/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:41:22,068 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 07:41:22,068 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:41:22,069 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-19 07:41:22,069 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:41:22,069 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:41:22,069 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:41:22,069 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-19 07:41:22,069 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-19 07:41:22,069 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-19 07:41:22,070 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-19 07:41:22,070 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-19 07:41:22,070 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-19 07:41:22,070 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:41:22,070 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-19 07:41:22,070 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:41:22,071 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:41:22,072 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 07:41:22,251 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:41:22,254 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:41:22,925 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:41:23,366 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:41:23,367 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 07:41:23,374 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:41:23 BoogieIcfgContainer [2023-11-19 07:41:23,375 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:41:23,379 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:41:23,379 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:41:23,383 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:41:23,383 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:41:20" (1/3) ... [2023-11-19 07:41:23,385 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@244291de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:41:23, skipping insertion in model container [2023-11-19 07:41:23,385 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:21" (2/3) ... [2023-11-19 07:41:23,387 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@244291de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:41:23, skipping insertion in model container [2023-11-19 07:41:23,387 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:41:23" (3/3) ... [2023-11-19 07:41:23,389 INFO L112 eAbstractionObserver]: Analyzing ICFG safe020_power.i [2023-11-19 07:41:23,399 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 07:41:23,411 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:41:23,412 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-19 07:41:23,412 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 07:41:23,510 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-19 07:41:23,561 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 137 places, 130 transitions, 272 flow [2023-11-19 07:41:23,662 INFO L124 PetriNetUnfolderBase]: 3/127 cut-off events. [2023-11-19 07:41:23,662 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:41:23,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 137 conditions, 127 events. 3/127 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 62 event pairs, 0 based on Foata normal form. 0/122 useless extension candidates. Maximal degree in co-relation 90. Up to 2 conditions per place. [2023-11-19 07:41:23,672 INFO L82 GeneralOperation]: Start removeDead. Operand has 137 places, 130 transitions, 272 flow [2023-11-19 07:41:23,683 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 134 places, 127 transitions, 263 flow [2023-11-19 07:41:23,687 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:41:23,719 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 134 places, 127 transitions, 263 flow [2023-11-19 07:41:23,721 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 134 places, 127 transitions, 263 flow [2023-11-19 07:41:23,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 134 places, 127 transitions, 263 flow [2023-11-19 07:41:23,757 INFO L124 PetriNetUnfolderBase]: 3/127 cut-off events. [2023-11-19 07:41:23,757 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:41:23,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 137 conditions, 127 events. 3/127 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 62 event pairs, 0 based on Foata normal form. 0/122 useless extension candidates. Maximal degree in co-relation 90. Up to 2 conditions per place. [2023-11-19 07:41:23,762 INFO L119 LiptonReduction]: Number of co-enabled transitions 2206 [2023-11-19 07:41:34,384 INFO L134 LiptonReduction]: Checked pairs total: 4779 [2023-11-19 07:41:34,385 INFO L136 LiptonReduction]: Total number of compositions: 117 [2023-11-19 07:41:34,401 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:41:34,408 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;@48bd9379, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:41:34,408 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-11-19 07:41:34,418 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:41:34,418 INFO L124 PetriNetUnfolderBase]: 0/7 cut-off events. [2023-11-19 07:41:34,418 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:41:34,418 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:41:34,419 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 07:41:34,420 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-19 07:41:34,425 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:34,425 INFO L85 PathProgramCache]: Analyzing trace with hash 848629208, now seen corresponding path program 1 times [2023-11-19 07:41:34,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:41:34,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273232633] [2023-11-19 07:41:34,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:34,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:41:34,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:35,068 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 07:41:35,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:41:35,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273232633] [2023-11-19 07:41:35,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273232633] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:41:35,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:41:35,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:41:35,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358659416] [2023-11-19 07:41:35,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:41:35,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:41:35,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:41:35,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:41:35,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:41:35,111 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 247 [2023-11-19 07:41:35,115 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 23 transitions, 55 flow. Second operand has 3 states, 3 states have (on average 115.66666666666667) internal successors, (347), 3 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:41:35,115 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:41:35,115 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 247 [2023-11-19 07:41:35,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:41:35,685 INFO L124 PetriNetUnfolderBase]: 855/1288 cut-off events. [2023-11-19 07:41:35,685 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2023-11-19 07:41:35,691 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2615 conditions, 1288 events. 855/1288 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 5418 event pairs, 237 based on Foata normal form. 0/1220 useless extension candidates. Maximal degree in co-relation 2604. Up to 1027 conditions per place. [2023-11-19 07:41:35,702 INFO L140 encePairwiseOnDemand]: 243/247 looper letters, 29 selfloop transitions, 2 changer transitions 2/34 dead transitions. [2023-11-19 07:41:35,702 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 34 transitions, 146 flow [2023-11-19 07:41:35,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:41:35,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:41:35,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 378 transitions. [2023-11-19 07:41:35,723 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5101214574898786 [2023-11-19 07:41:35,724 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 378 transitions. [2023-11-19 07:41:35,724 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 378 transitions. [2023-11-19 07:41:35,727 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:41:35,730 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 378 transitions. [2023-11-19 07:41:35,735 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 126.0) internal successors, (378), 3 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:41:35,743 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 247.0) internal successors, (988), 4 states have internal predecessors, (988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:41:35,744 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 247.0) internal successors, (988), 4 states have internal predecessors, (988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:41:35,746 INFO L175 Difference]: Start difference. First operand has 32 places, 23 transitions, 55 flow. Second operand 3 states and 378 transitions. [2023-11-19 07:41:35,747 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 34 transitions, 146 flow [2023-11-19 07:41:35,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 34 transitions, 142 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-19 07:41:35,752 INFO L231 Difference]: Finished difference. Result has 30 places, 20 transitions, 50 flow [2023-11-19 07:41:35,754 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=247, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=50, PETRI_PLACES=30, PETRI_TRANSITIONS=20} [2023-11-19 07:41:35,759 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, -2 predicate places. [2023-11-19 07:41:35,759 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 20 transitions, 50 flow [2023-11-19 07:41:35,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 115.66666666666667) internal successors, (347), 3 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:41:35,760 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:41:35,760 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:41:35,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:41:35,761 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-19 07:41:35,762 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:35,762 INFO L85 PathProgramCache]: Analyzing trace with hash 960701612, now seen corresponding path program 1 times [2023-11-19 07:41:35,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:41:35,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642390892] [2023-11-19 07:41:35,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:35,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:41:35,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:36,128 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 07:41:36,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:41:36,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642390892] [2023-11-19 07:41:36,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642390892] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:41:36,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:41:36,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:41:36,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458853286] [2023-11-19 07:41:36,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:41:36,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:41:36,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:41:36,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:41:36,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:41:36,155 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 247 [2023-11-19 07:41:36,157 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 20 transitions, 50 flow. Second operand has 4 states, 4 states have (on average 115.5) internal successors, (462), 4 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:41:36,157 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:41:36,157 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 247 [2023-11-19 07:41:36,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:41:36,619 INFO L124 PetriNetUnfolderBase]: 727/1184 cut-off events. [2023-11-19 07:41:36,620 INFO L125 PetriNetUnfolderBase]: For 93/93 co-relation queries the response was YES. [2023-11-19 07:41:36,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2446 conditions, 1184 events. 727/1184 cut-off events. For 93/93 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 5292 event pairs, 175 based on Foata normal form. 64/1248 useless extension candidates. Maximal degree in co-relation 2436. Up to 761 conditions per place. [2023-11-19 07:41:36,631 INFO L140 encePairwiseOnDemand]: 243/247 looper letters, 25 selfloop transitions, 2 changer transitions 16/44 dead transitions. [2023-11-19 07:41:36,631 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 44 transitions, 190 flow [2023-11-19 07:41:36,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:41:36,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 07:41:36,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 610 transitions. [2023-11-19 07:41:36,640 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4939271255060729 [2023-11-19 07:41:36,640 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 610 transitions. [2023-11-19 07:41:36,641 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 610 transitions. [2023-11-19 07:41:36,642 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:41:36,645 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 610 transitions. [2023-11-19 07:41:36,649 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 122.0) internal successors, (610), 5 states have internal predecessors, (610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:41:36,656 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 247.0) internal successors, (1482), 6 states have internal predecessors, (1482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:41:36,657 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 247.0) internal successors, (1482), 6 states have internal predecessors, (1482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:41:36,658 INFO L175 Difference]: Start difference. First operand has 30 places, 20 transitions, 50 flow. Second operand 5 states and 610 transitions. [2023-11-19 07:41:36,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 44 transitions, 190 flow [2023-11-19 07:41:36,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 44 transitions, 180 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:41:36,664 INFO L231 Difference]: Finished difference. Result has 34 places, 20 transitions, 58 flow [2023-11-19 07:41:36,664 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=247, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=58, PETRI_PLACES=34, PETRI_TRANSITIONS=20} [2023-11-19 07:41:36,673 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 2 predicate places. [2023-11-19 07:41:36,673 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 20 transitions, 58 flow [2023-11-19 07:41:36,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 115.5) internal successors, (462), 4 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:41:36,674 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:41:36,674 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:41:36,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:41:36,675 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-19 07:41:36,678 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:36,678 INFO L85 PathProgramCache]: Analyzing trace with hash -282997008, now seen corresponding path program 1 times [2023-11-19 07:41:36,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:41:36,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038209707] [2023-11-19 07:41:36,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:36,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:41:36,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:37,005 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 07:41:37,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:41:37,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038209707] [2023-11-19 07:41:37,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1038209707] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:41:37,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:41:37,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:41:37,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891258129] [2023-11-19 07:41:37,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:41:37,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:41:37,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:41:37,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:41:37,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:41:37,028 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 247 [2023-11-19 07:41:37,030 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 20 transitions, 58 flow. Second operand has 4 states, 4 states have (on average 112.75) internal successors, (451), 4 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:41:37,030 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:41:37,030 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 247 [2023-11-19 07:41:37,030 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:41:37,492 INFO L124 PetriNetUnfolderBase]: 877/1342 cut-off events. [2023-11-19 07:41:37,492 INFO L125 PetriNetUnfolderBase]: For 349/349 co-relation queries the response was YES. [2023-11-19 07:41:37,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3013 conditions, 1342 events. 877/1342 cut-off events. For 349/349 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 5522 event pairs, 277 based on Foata normal form. 64/1406 useless extension candidates. Maximal degree in co-relation 3000. Up to 1131 conditions per place. [2023-11-19 07:41:37,524 INFO L140 encePairwiseOnDemand]: 242/247 looper letters, 29 selfloop transitions, 3 changer transitions 15/47 dead transitions. [2023-11-19 07:41:37,524 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 47 transitions, 215 flow [2023-11-19 07:41:37,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:41:37,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 07:41:37,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 599 transitions. [2023-11-19 07:41:37,527 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48502024291497975 [2023-11-19 07:41:37,527 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 599 transitions. [2023-11-19 07:41:37,528 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 599 transitions. [2023-11-19 07:41:37,528 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:41:37,529 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 599 transitions. [2023-11-19 07:41:37,531 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 119.8) internal successors, (599), 5 states have internal predecessors, (599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:41:37,534 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 247.0) internal successors, (1482), 6 states have internal predecessors, (1482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:41:37,536 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 247.0) internal successors, (1482), 6 states have internal predecessors, (1482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:41:37,536 INFO L175 Difference]: Start difference. First operand has 34 places, 20 transitions, 58 flow. Second operand 5 states and 599 transitions. [2023-11-19 07:41:37,536 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 47 transitions, 215 flow [2023-11-19 07:41:37,542 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 47 transitions, 205 flow, removed 2 selfloop flow, removed 4 redundant places. [2023-11-19 07:41:37,543 INFO L231 Difference]: Finished difference. Result has 35 places, 22 transitions, 77 flow [2023-11-19 07:41:37,543 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=247, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=77, PETRI_PLACES=35, PETRI_TRANSITIONS=22} [2023-11-19 07:41:37,544 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 3 predicate places. [2023-11-19 07:41:37,544 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 22 transitions, 77 flow [2023-11-19 07:41:37,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 112.75) internal successors, (451), 4 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:41:37,545 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:41:37,545 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:41:37,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 07:41:37,546 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-19 07:41:37,546 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:37,546 INFO L85 PathProgramCache]: Analyzing trace with hash -230296073, now seen corresponding path program 1 times [2023-11-19 07:41:37,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:41:37,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16483071] [2023-11-19 07:41:37,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:37,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:41:37,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:39,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:41:39,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:41:39,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16483071] [2023-11-19 07:41:39,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16483071] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:41:39,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:41:39,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:41:39,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737861245] [2023-11-19 07:41:39,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:41:39,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:41:39,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:41:39,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:41:39,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:41:39,645 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 247 [2023-11-19 07:41:39,647 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 22 transitions, 77 flow. Second operand has 7 states, 7 states have (on average 104.71428571428571) internal successors, (733), 7 states have internal predecessors, (733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:41:39,647 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:41:39,647 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 247 [2023-11-19 07:41:39,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:41:40,335 INFO L124 PetriNetUnfolderBase]: 789/1253 cut-off events. [2023-11-19 07:41:40,335 INFO L125 PetriNetUnfolderBase]: For 684/684 co-relation queries the response was YES. [2023-11-19 07:41:40,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3138 conditions, 1253 events. 789/1253 cut-off events. For 684/684 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 5394 event pairs, 241 based on Foata normal form. 62/1315 useless extension candidates. Maximal degree in co-relation 3124. Up to 935 conditions per place. [2023-11-19 07:41:40,345 INFO L140 encePairwiseOnDemand]: 238/247 looper letters, 36 selfloop transitions, 9 changer transitions 20/67 dead transitions. [2023-11-19 07:41:40,345 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 67 transitions, 337 flow [2023-11-19 07:41:40,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 07:41:40,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-19 07:41:40,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 889 transitions. [2023-11-19 07:41:40,350 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4498987854251012 [2023-11-19 07:41:40,350 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 889 transitions. [2023-11-19 07:41:40,350 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 889 transitions. [2023-11-19 07:41:40,351 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:41:40,351 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 889 transitions. [2023-11-19 07:41:40,354 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 111.125) internal successors, (889), 8 states have internal predecessors, (889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:41:40,359 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 247.0) internal successors, (2223), 9 states have internal predecessors, (2223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:41:40,361 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 247.0) internal successors, (2223), 9 states have internal predecessors, (2223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:41:40,361 INFO L175 Difference]: Start difference. First operand has 35 places, 22 transitions, 77 flow. Second operand 8 states and 889 transitions. [2023-11-19 07:41:40,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 67 transitions, 337 flow [2023-11-19 07:41:40,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 67 transitions, 329 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-11-19 07:41:40,367 INFO L231 Difference]: Finished difference. Result has 44 places, 30 transitions, 144 flow [2023-11-19 07:41:40,368 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=247, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=144, PETRI_PLACES=44, PETRI_TRANSITIONS=30} [2023-11-19 07:41:40,368 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 12 predicate places. [2023-11-19 07:41:40,369 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 30 transitions, 144 flow [2023-11-19 07:41:40,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 104.71428571428571) internal successors, (733), 7 states have internal predecessors, (733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:41:40,370 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:41:40,370 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:41:40,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 07:41:40,370 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-19 07:41:40,371 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:40,371 INFO L85 PathProgramCache]: Analyzing trace with hash -1320181975, now seen corresponding path program 1 times [2023-11-19 07:41:40,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:41:40,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272139851] [2023-11-19 07:41:40,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:40,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:41:40,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:40,642 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 07:41:40,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:41:40,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272139851] [2023-11-19 07:41:40,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272139851] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:41:40,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:41:40,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:41:40,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066038714] [2023-11-19 07:41:40,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:41:40,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:41:40,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:41:40,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:41:40,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:41:40,657 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 247 [2023-11-19 07:41:40,658 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 30 transitions, 144 flow. Second operand has 4 states, 4 states have (on average 112.25) internal successors, (449), 4 states have internal predecessors, (449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:41:40,658 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:41:40,658 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 247 [2023-11-19 07:41:40,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:41:41,058 INFO L124 PetriNetUnfolderBase]: 551/906 cut-off events. [2023-11-19 07:41:41,058 INFO L125 PetriNetUnfolderBase]: For 1194/1204 co-relation queries the response was YES. [2023-11-19 07:41:41,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2990 conditions, 906 events. 551/906 cut-off events. For 1194/1204 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 3894 event pairs, 109 based on Foata normal form. 87/986 useless extension candidates. Maximal degree in co-relation 2970. Up to 537 conditions per place. [2023-11-19 07:41:41,065 INFO L140 encePairwiseOnDemand]: 241/247 looper letters, 44 selfloop transitions, 4 changer transitions 34/84 dead transitions. [2023-11-19 07:41:41,065 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 84 transitions, 549 flow [2023-11-19 07:41:41,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:41:41,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 07:41:41,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 598 transitions. [2023-11-19 07:41:41,069 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4842105263157895 [2023-11-19 07:41:41,069 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 598 transitions. [2023-11-19 07:41:41,069 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 598 transitions. [2023-11-19 07:41:41,070 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:41:41,070 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 598 transitions. [2023-11-19 07:41:41,072 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 119.6) internal successors, (598), 5 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:41:41,074 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 247.0) internal successors, (1482), 6 states have internal predecessors, (1482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:41:41,075 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 247.0) internal successors, (1482), 6 states have internal predecessors, (1482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:41:41,075 INFO L175 Difference]: Start difference. First operand has 44 places, 30 transitions, 144 flow. Second operand 5 states and 598 transitions. [2023-11-19 07:41:41,075 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 84 transitions, 549 flow [2023-11-19 07:41:41,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 84 transitions, 545 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-11-19 07:41:41,081 INFO L231 Difference]: Finished difference. Result has 46 places, 33 transitions, 180 flow [2023-11-19 07:41:41,082 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=247, PETRI_DIFFERENCE_MINUEND_FLOW=140, 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=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=180, PETRI_PLACES=46, PETRI_TRANSITIONS=33} [2023-11-19 07:41:41,083 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 14 predicate places. [2023-11-19 07:41:41,083 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 33 transitions, 180 flow [2023-11-19 07:41:41,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 112.25) internal successors, (449), 4 states have internal predecessors, (449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:41:41,083 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:41:41,083 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:41:41,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 07:41:41,084 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-19 07:41:41,084 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:41,084 INFO L85 PathProgramCache]: Analyzing trace with hash -310653127, now seen corresponding path program 1 times [2023-11-19 07:41:41,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:41:41,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251989584] [2023-11-19 07:41:41,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:41,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:41:41,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:41,296 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 07:41:41,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:41:41,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251989584] [2023-11-19 07:41:41,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251989584] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:41:41,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:41:41,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:41:41,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425677743] [2023-11-19 07:41:41,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:41:41,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:41:41,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:41:41,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:41:41,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:41:41,309 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 247 [2023-11-19 07:41:41,310 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 33 transitions, 180 flow. Second operand has 4 states, 4 states have (on average 113.5) internal successors, (454), 4 states have internal predecessors, (454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:41:41,310 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:41:41,310 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 247 [2023-11-19 07:41:41,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:41:41,711 INFO L124 PetriNetUnfolderBase]: 637/1080 cut-off events. [2023-11-19 07:41:41,711 INFO L125 PetriNetUnfolderBase]: For 1878/1878 co-relation queries the response was YES. [2023-11-19 07:41:41,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4268 conditions, 1080 events. 637/1080 cut-off events. For 1878/1878 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 4859 event pairs, 215 based on Foata normal form. 47/1127 useless extension candidates. Maximal degree in co-relation 4245. Up to 616 conditions per place. [2023-11-19 07:41:41,720 INFO L140 encePairwiseOnDemand]: 243/247 looper letters, 46 selfloop transitions, 3 changer transitions 19/68 dead transitions. [2023-11-19 07:41:41,720 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 68 transitions, 514 flow [2023-11-19 07:41:41,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:41:41,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 07:41:41,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 599 transitions. [2023-11-19 07:41:41,723 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48502024291497975 [2023-11-19 07:41:41,723 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 599 transitions. [2023-11-19 07:41:41,723 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 599 transitions. [2023-11-19 07:41:41,724 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:41:41,724 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 599 transitions. [2023-11-19 07:41:41,726 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 119.8) internal successors, (599), 5 states have internal predecessors, (599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:41:41,729 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 247.0) internal successors, (1482), 6 states have internal predecessors, (1482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:41:41,729 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 247.0) internal successors, (1482), 6 states have internal predecessors, (1482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:41:41,730 INFO L175 Difference]: Start difference. First operand has 46 places, 33 transitions, 180 flow. Second operand 5 states and 599 transitions. [2023-11-19 07:41:41,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 68 transitions, 514 flow [2023-11-19 07:41:41,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 68 transitions, 491 flow, removed 8 selfloop flow, removed 2 redundant places. [2023-11-19 07:41:41,738 INFO L231 Difference]: Finished difference. Result has 49 places, 33 transitions, 183 flow [2023-11-19 07:41:41,738 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=247, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=183, PETRI_PLACES=49, PETRI_TRANSITIONS=33} [2023-11-19 07:41:41,740 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 17 predicate places. [2023-11-19 07:41:41,741 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 33 transitions, 183 flow [2023-11-19 07:41:41,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 113.5) internal successors, (454), 4 states have internal predecessors, (454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:41:41,741 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:41:41,741 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:41:41,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 07:41:41,742 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-19 07:41:41,742 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:41,742 INFO L85 PathProgramCache]: Analyzing trace with hash -359222709, now seen corresponding path program 1 times [2023-11-19 07:41:41,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:41:41,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430863648] [2023-11-19 07:41:41,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:41,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:41:41,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:42,071 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 07:41:42,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:41:42,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430863648] [2023-11-19 07:41:42,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430863648] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:41:42,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:41:42,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:41:42,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462991112] [2023-11-19 07:41:42,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:41:42,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:41:42,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:41:42,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:41:42,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:41:42,088 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 247 [2023-11-19 07:41:42,089 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 33 transitions, 183 flow. Second operand has 5 states, 5 states have (on average 112.0) internal successors, (560), 5 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:41:42,089 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:41:42,089 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 247 [2023-11-19 07:41:42,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:41:42,439 INFO L124 PetriNetUnfolderBase]: 329/609 cut-off events. [2023-11-19 07:41:42,439 INFO L125 PetriNetUnfolderBase]: For 911/917 co-relation queries the response was YES. [2023-11-19 07:41:42,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2275 conditions, 609 events. 329/609 cut-off events. For 911/917 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2628 event pairs, 68 based on Foata normal form. 64/672 useless extension candidates. Maximal degree in co-relation 2250. Up to 223 conditions per place. [2023-11-19 07:41:42,444 INFO L140 encePairwiseOnDemand]: 241/247 looper letters, 51 selfloop transitions, 7 changer transitions 26/86 dead transitions. [2023-11-19 07:41:42,444 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 86 transitions, 624 flow [2023-11-19 07:41:42,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:41:42,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:41:42,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 718 transitions. [2023-11-19 07:41:42,449 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4844804318488529 [2023-11-19 07:41:42,449 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 718 transitions. [2023-11-19 07:41:42,449 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 718 transitions. [2023-11-19 07:41:42,450 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:41:42,450 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 718 transitions. [2023-11-19 07:41:42,453 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 119.66666666666667) internal successors, (718), 6 states have internal predecessors, (718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:41:42,456 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 247.0) internal successors, (1729), 7 states have internal predecessors, (1729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:41:42,457 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 247.0) internal successors, (1729), 7 states have internal predecessors, (1729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:41:42,457 INFO L175 Difference]: Start difference. First operand has 49 places, 33 transitions, 183 flow. Second operand 6 states and 718 transitions. [2023-11-19 07:41:42,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 86 transitions, 624 flow [2023-11-19 07:41:42,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 86 transitions, 592 flow, removed 8 selfloop flow, removed 4 redundant places. [2023-11-19 07:41:42,463 INFO L231 Difference]: Finished difference. Result has 51 places, 35 transitions, 220 flow [2023-11-19 07:41:42,464 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=247, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=220, PETRI_PLACES=51, PETRI_TRANSITIONS=35} [2023-11-19 07:41:42,464 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 19 predicate places. [2023-11-19 07:41:42,465 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 35 transitions, 220 flow [2023-11-19 07:41:42,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 112.0) internal successors, (560), 5 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:41:42,465 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:41:42,465 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:41:42,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 07:41:42,466 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-19 07:41:42,466 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:42,466 INFO L85 PathProgramCache]: Analyzing trace with hash -1777154536, now seen corresponding path program 1 times [2023-11-19 07:41:42,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:41:42,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563948210] [2023-11-19 07:41:42,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:42,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:41:42,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:42,805 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 07:41:42,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:41:42,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563948210] [2023-11-19 07:41:42,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563948210] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:41:42,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:41:42,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:41:42,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636284438] [2023-11-19 07:41:42,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:41:42,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:41:42,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:41:42,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:41:42,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:41:42,825 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 247 [2023-11-19 07:41:42,826 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 35 transitions, 220 flow. Second operand has 6 states, 6 states have (on average 111.83333333333333) internal successors, (671), 6 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:41:42,826 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:41:42,826 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 247 [2023-11-19 07:41:42,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:41:43,076 INFO L124 PetriNetUnfolderBase]: 205/386 cut-off events. [2023-11-19 07:41:43,076 INFO L125 PetriNetUnfolderBase]: For 790/797 co-relation queries the response was YES. [2023-11-19 07:41:43,077 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1539 conditions, 386 events. 205/386 cut-off events. For 790/797 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1491 event pairs, 59 based on Foata normal form. 19/403 useless extension candidates. Maximal degree in co-relation 1513. Up to 145 conditions per place. [2023-11-19 07:41:43,079 INFO L140 encePairwiseOnDemand]: 241/247 looper letters, 39 selfloop transitions, 10 changer transitions 20/70 dead transitions. [2023-11-19 07:41:43,079 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 70 transitions, 531 flow [2023-11-19 07:41:43,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:41:43,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-19 07:41:43,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 818 transitions. [2023-11-19 07:41:43,083 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47310584152689417 [2023-11-19 07:41:43,084 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 818 transitions. [2023-11-19 07:41:43,084 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 818 transitions. [2023-11-19 07:41:43,085 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:41:43,085 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 818 transitions. [2023-11-19 07:41:43,087 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 116.85714285714286) internal successors, (818), 7 states have internal predecessors, (818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:41:43,091 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 247.0) internal successors, (1976), 8 states have internal predecessors, (1976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:41:43,092 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 247.0) internal successors, (1976), 8 states have internal predecessors, (1976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:41:43,092 INFO L175 Difference]: Start difference. First operand has 51 places, 35 transitions, 220 flow. Second operand 7 states and 818 transitions. [2023-11-19 07:41:43,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 70 transitions, 531 flow [2023-11-19 07:41:43,100 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 70 transitions, 476 flow, removed 20 selfloop flow, removed 6 redundant places. [2023-11-19 07:41:43,103 INFO L231 Difference]: Finished difference. Result has 52 places, 33 transitions, 197 flow [2023-11-19 07:41:43,103 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=247, PETRI_DIFFERENCE_MINUEND_FLOW=175, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=197, PETRI_PLACES=52, PETRI_TRANSITIONS=33} [2023-11-19 07:41:43,108 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 20 predicate places. [2023-11-19 07:41:43,108 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 33 transitions, 197 flow [2023-11-19 07:41:43,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 111.83333333333333) internal successors, (671), 6 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:41:43,109 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:41:43,109 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:41:43,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-19 07:41:43,109 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-19 07:41:43,114 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:43,114 INFO L85 PathProgramCache]: Analyzing trace with hash -1939317921, now seen corresponding path program 1 times [2023-11-19 07:41:43,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:41:43,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504984892] [2023-11-19 07:41:43,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:43,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:41:43,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:44,591 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 07:41:44,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:41:44,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504984892] [2023-11-19 07:41:44,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504984892] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:41:44,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:41:44,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 07:41:44,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141721804] [2023-11-19 07:41:44,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:41:44,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 07:41:44,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:41:44,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 07:41:44,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:41:44,726 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 247 [2023-11-19 07:41:44,727 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 33 transitions, 197 flow. Second operand has 8 states, 8 states have (on average 106.375) internal successors, (851), 8 states have internal predecessors, (851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:41:44,727 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:41:44,727 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 247 [2023-11-19 07:41:44,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:41:45,163 INFO L124 PetriNetUnfolderBase]: 121/257 cut-off events. [2023-11-19 07:41:45,163 INFO L125 PetriNetUnfolderBase]: For 581/583 co-relation queries the response was YES. [2023-11-19 07:41:45,164 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1059 conditions, 257 events. 121/257 cut-off events. For 581/583 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 990 event pairs, 21 based on Foata normal form. 3/260 useless extension candidates. Maximal degree in co-relation 1034. Up to 105 conditions per place. [2023-11-19 07:41:45,166 INFO L140 encePairwiseOnDemand]: 237/247 looper letters, 52 selfloop transitions, 13 changer transitions 25/91 dead transitions. [2023-11-19 07:41:45,170 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 91 transitions, 797 flow [2023-11-19 07:41:45,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 07:41:45,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-19 07:41:45,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 891 transitions. [2023-11-19 07:41:45,175 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4509109311740891 [2023-11-19 07:41:45,175 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 891 transitions. [2023-11-19 07:41:45,175 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 891 transitions. [2023-11-19 07:41:45,176 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:41:45,176 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 891 transitions. [2023-11-19 07:41:45,180 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 111.375) internal successors, (891), 8 states have internal predecessors, (891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:41:45,185 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 247.0) internal successors, (2223), 9 states have internal predecessors, (2223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:41:45,186 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 247.0) internal successors, (2223), 9 states have internal predecessors, (2223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:41:45,186 INFO L175 Difference]: Start difference. First operand has 52 places, 33 transitions, 197 flow. Second operand 8 states and 891 transitions. [2023-11-19 07:41:45,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 91 transitions, 797 flow [2023-11-19 07:41:45,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 91 transitions, 601 flow, removed 60 selfloop flow, removed 11 redundant places. [2023-11-19 07:41:45,192 INFO L231 Difference]: Finished difference. Result has 51 places, 39 transitions, 225 flow [2023-11-19 07:41:45,192 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=247, PETRI_DIFFERENCE_MINUEND_FLOW=143, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=225, PETRI_PLACES=51, PETRI_TRANSITIONS=39} [2023-11-19 07:41:45,194 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 19 predicate places. [2023-11-19 07:41:45,194 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 39 transitions, 225 flow [2023-11-19 07:41:45,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 106.375) internal successors, (851), 8 states have internal predecessors, (851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:41:45,195 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:41:45,195 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:41:45,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-19 07:41:45,195 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-19 07:41:45,195 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:45,196 INFO L85 PathProgramCache]: Analyzing trace with hash -74708573, now seen corresponding path program 2 times [2023-11-19 07:41:45,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:41:45,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202417041] [2023-11-19 07:41:45,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:45,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:41:45,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:48,208 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 07:41:48,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:41:48,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202417041] [2023-11-19 07:41:48,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202417041] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:41:48,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:41:48,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-19 07:41:48,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708375471] [2023-11-19 07:41:48,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:41:48,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-19 07:41:48,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:41:48,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-19 07:41:48,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-11-19 07:41:48,481 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 247 [2023-11-19 07:41:48,482 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 39 transitions, 225 flow. Second operand has 10 states, 10 states have (on average 102.9) internal successors, (1029), 10 states have internal predecessors, (1029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:41:48,482 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:41:48,482 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 247 [2023-11-19 07:41:48,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:41:49,246 INFO L124 PetriNetUnfolderBase]: 151/331 cut-off events. [2023-11-19 07:41:49,247 INFO L125 PetriNetUnfolderBase]: For 606/608 co-relation queries the response was YES. [2023-11-19 07:41:49,248 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1327 conditions, 331 events. 151/331 cut-off events. For 606/608 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1463 event pairs, 44 based on Foata normal form. 4/335 useless extension candidates. Maximal degree in co-relation 1307. Up to 112 conditions per place. [2023-11-19 07:41:49,251 INFO L140 encePairwiseOnDemand]: 238/247 looper letters, 53 selfloop transitions, 9 changer transitions 35/98 dead transitions. [2023-11-19 07:41:49,251 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 98 transitions, 746 flow [2023-11-19 07:41:49,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-19 07:41:49,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-19 07:41:49,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1171 transitions. [2023-11-19 07:41:49,257 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43099006256900996 [2023-11-19 07:41:49,257 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1171 transitions. [2023-11-19 07:41:49,257 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1171 transitions. [2023-11-19 07:41:49,258 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:41:49,258 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1171 transitions. [2023-11-19 07:41:49,262 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 106.45454545454545) internal successors, (1171), 11 states have internal predecessors, (1171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:41:49,268 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 247.0) internal successors, (2964), 12 states have internal predecessors, (2964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:41:49,269 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 247.0) internal successors, (2964), 12 states have internal predecessors, (2964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:41:49,270 INFO L175 Difference]: Start difference. First operand has 51 places, 39 transitions, 225 flow. Second operand 11 states and 1171 transitions. [2023-11-19 07:41:49,270 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 98 transitions, 746 flow [2023-11-19 07:41:49,275 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 98 transitions, 689 flow, removed 22 selfloop flow, removed 5 redundant places. [2023-11-19 07:41:49,279 INFO L231 Difference]: Finished difference. Result has 61 places, 40 transitions, 248 flow [2023-11-19 07:41:49,280 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=247, PETRI_DIFFERENCE_MINUEND_FLOW=197, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=248, PETRI_PLACES=61, PETRI_TRANSITIONS=40} [2023-11-19 07:41:49,280 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 29 predicate places. [2023-11-19 07:41:49,281 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 40 transitions, 248 flow [2023-11-19 07:41:49,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 102.9) internal successors, (1029), 10 states have internal predecessors, (1029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:41:49,282 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:41:49,282 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:41:49,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-19 07:41:49,282 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-19 07:41:49,283 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:49,283 INFO L85 PathProgramCache]: Analyzing trace with hash -1185271407, now seen corresponding path program 3 times [2023-11-19 07:41:49,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:41:49,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789874090] [2023-11-19 07:41:49,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:49,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:41:49,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:52,333 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 07:41:52,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:41:52,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789874090] [2023-11-19 07:41:52,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789874090] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:41:52,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:41:52,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-19 07:41:52,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406462390] [2023-11-19 07:41:52,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:41:52,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-19 07:41:52,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:41:52,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-19 07:41:52,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-11-19 07:41:52,628 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 247 [2023-11-19 07:41:52,629 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 40 transitions, 248 flow. Second operand has 10 states, 10 states have (on average 103.9) internal successors, (1039), 10 states have internal predecessors, (1039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:41:52,630 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:41:52,630 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 247 [2023-11-19 07:41:52,630 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:41:53,132 INFO L124 PetriNetUnfolderBase]: 161/360 cut-off events. [2023-11-19 07:41:53,132 INFO L125 PetriNetUnfolderBase]: For 779/779 co-relation queries the response was YES. [2023-11-19 07:41:53,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1475 conditions, 360 events. 161/360 cut-off events. For 779/779 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1709 event pairs, 28 based on Foata normal form. 1/361 useless extension candidates. Maximal degree in co-relation 1448. Up to 154 conditions per place. [2023-11-19 07:41:53,135 INFO L140 encePairwiseOnDemand]: 237/247 looper letters, 57 selfloop transitions, 18 changer transitions 10/86 dead transitions. [2023-11-19 07:41:53,136 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 86 transitions, 674 flow [2023-11-19 07:41:53,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-19 07:41:53,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-19 07:41:53,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 975 transitions. [2023-11-19 07:41:53,140 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43859649122807015 [2023-11-19 07:41:53,141 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 975 transitions. [2023-11-19 07:41:53,141 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 975 transitions. [2023-11-19 07:41:53,142 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:41:53,142 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 975 transitions. [2023-11-19 07:41:53,145 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 108.33333333333333) internal successors, (975), 9 states have internal predecessors, (975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:41:53,149 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 247.0) internal successors, (2470), 10 states have internal predecessors, (2470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:41:53,150 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 247.0) internal successors, (2470), 10 states have internal predecessors, (2470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:41:53,151 INFO L175 Difference]: Start difference. First operand has 61 places, 40 transitions, 248 flow. Second operand 9 states and 975 transitions. [2023-11-19 07:41:53,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 86 transitions, 674 flow [2023-11-19 07:41:53,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 86 transitions, 637 flow, removed 13 selfloop flow, removed 9 redundant places. [2023-11-19 07:41:53,157 INFO L231 Difference]: Finished difference. Result has 59 places, 46 transitions, 329 flow [2023-11-19 07:41:53,157 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=247, PETRI_DIFFERENCE_MINUEND_FLOW=225, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=329, PETRI_PLACES=59, PETRI_TRANSITIONS=46} [2023-11-19 07:41:53,158 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 27 predicate places. [2023-11-19 07:41:53,158 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 46 transitions, 329 flow [2023-11-19 07:41:53,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 103.9) internal successors, (1039), 10 states have internal predecessors, (1039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:41:53,159 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:41:53,159 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:41:53,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-19 07:41:53,159 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-19 07:41:53,160 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:53,160 INFO L85 PathProgramCache]: Analyzing trace with hash -1985275983, now seen corresponding path program 4 times [2023-11-19 07:41:53,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:41:53,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658648302] [2023-11-19 07:41:53,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:53,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:41:53,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:56,657 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 07:41:56,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:41:56,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658648302] [2023-11-19 07:41:56,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658648302] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:41:56,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:41:56,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-19 07:41:56,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478428134] [2023-11-19 07:41:56,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:41:56,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-19 07:41:56,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:41:56,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-19 07:41:56,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-11-19 07:41:56,950 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 247 [2023-11-19 07:41:56,951 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 46 transitions, 329 flow. Second operand has 10 states, 10 states have (on average 103.9) internal successors, (1039), 10 states have internal predecessors, (1039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:41:56,951 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:41:56,952 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 247 [2023-11-19 07:41:56,952 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:41:57,448 INFO L124 PetriNetUnfolderBase]: 148/334 cut-off events. [2023-11-19 07:41:57,448 INFO L125 PetriNetUnfolderBase]: For 909/909 co-relation queries the response was YES. [2023-11-19 07:41:57,449 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1449 conditions, 334 events. 148/334 cut-off events. For 909/909 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1549 event pairs, 24 based on Foata normal form. 1/335 useless extension candidates. Maximal degree in co-relation 1425. Up to 219 conditions per place. [2023-11-19 07:41:57,451 INFO L140 encePairwiseOnDemand]: 239/247 looper letters, 55 selfloop transitions, 12 changer transitions 20/88 dead transitions. [2023-11-19 07:41:57,451 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 88 transitions, 748 flow [2023-11-19 07:41:57,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-19 07:41:57,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-19 07:41:57,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 974 transitions. [2023-11-19 07:41:57,456 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4381466486729645 [2023-11-19 07:41:57,456 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 974 transitions. [2023-11-19 07:41:57,456 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 974 transitions. [2023-11-19 07:41:57,457 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:41:57,457 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 974 transitions. [2023-11-19 07:41:57,460 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 108.22222222222223) internal successors, (974), 9 states have internal predecessors, (974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:41:57,491 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 247.0) internal successors, (2470), 10 states have internal predecessors, (2470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:41:57,492 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 247.0) internal successors, (2470), 10 states have internal predecessors, (2470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:41:57,492 INFO L175 Difference]: Start difference. First operand has 59 places, 46 transitions, 329 flow. Second operand 9 states and 974 transitions. [2023-11-19 07:41:57,493 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 88 transitions, 748 flow [2023-11-19 07:41:57,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 88 transitions, 697 flow, removed 18 selfloop flow, removed 5 redundant places. [2023-11-19 07:41:57,500 INFO L231 Difference]: Finished difference. Result has 64 places, 46 transitions, 326 flow [2023-11-19 07:41:57,501 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=247, PETRI_DIFFERENCE_MINUEND_FLOW=286, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=326, PETRI_PLACES=64, PETRI_TRANSITIONS=46} [2023-11-19 07:41:57,501 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 32 predicate places. [2023-11-19 07:41:57,502 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 46 transitions, 326 flow [2023-11-19 07:41:57,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 103.9) internal successors, (1039), 10 states have internal predecessors, (1039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:41:57,502 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:41:57,503 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:41:57,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-19 07:41:57,503 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-19 07:41:57,504 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:57,504 INFO L85 PathProgramCache]: Analyzing trace with hash 218822631, now seen corresponding path program 5 times [2023-11-19 07:41:57,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:41:57,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623864242] [2023-11-19 07:41:57,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:57,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:41:57,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:42:00,659 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 07:42:00,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:42:00,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623864242] [2023-11-19 07:42:00,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623864242] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:42:00,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:42:00,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-19 07:42:00,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250953152] [2023-11-19 07:42:00,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:42:00,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-19 07:42:00,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:42:00,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-19 07:42:00,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-11-19 07:42:01,042 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 247 [2023-11-19 07:42:01,044 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 46 transitions, 326 flow. Second operand has 10 states, 10 states have (on average 101.9) internal successors, (1019), 10 states have internal predecessors, (1019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:42:01,044 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:42:01,044 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 247 [2023-11-19 07:42:01,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:42:01,655 INFO L124 PetriNetUnfolderBase]: 153/348 cut-off events. [2023-11-19 07:42:01,656 INFO L125 PetriNetUnfolderBase]: For 1038/1040 co-relation queries the response was YES. [2023-11-19 07:42:01,657 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1547 conditions, 348 events. 153/348 cut-off events. For 1038/1040 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1659 event pairs, 21 based on Foata normal form. 3/351 useless extension candidates. Maximal degree in co-relation 1521. Up to 198 conditions per place. [2023-11-19 07:42:01,660 INFO L140 encePairwiseOnDemand]: 238/247 looper letters, 66 selfloop transitions, 14 changer transitions 14/95 dead transitions. [2023-11-19 07:42:01,660 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 95 transitions, 800 flow [2023-11-19 07:42:01,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-19 07:42:01,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-19 07:42:01,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1060 transitions. [2023-11-19 07:42:01,666 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4291497975708502 [2023-11-19 07:42:01,666 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1060 transitions. [2023-11-19 07:42:01,667 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1060 transitions. [2023-11-19 07:42:01,668 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:42:01,668 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1060 transitions. [2023-11-19 07:42:01,673 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 106.0) internal successors, (1060), 10 states have internal predecessors, (1060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:42:01,679 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 247.0) internal successors, (2717), 11 states have internal predecessors, (2717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:42:01,680 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 247.0) internal successors, (2717), 11 states have internal predecessors, (2717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:42:01,681 INFO L175 Difference]: Start difference. First operand has 64 places, 46 transitions, 326 flow. Second operand 10 states and 1060 transitions. [2023-11-19 07:42:01,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 95 transitions, 800 flow [2023-11-19 07:42:01,691 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 95 transitions, 766 flow, removed 8 selfloop flow, removed 5 redundant places. [2023-11-19 07:42:01,696 INFO L231 Difference]: Finished difference. Result has 68 places, 47 transitions, 342 flow [2023-11-19 07:42:01,696 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=247, PETRI_DIFFERENCE_MINUEND_FLOW=294, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=342, PETRI_PLACES=68, PETRI_TRANSITIONS=47} [2023-11-19 07:42:01,698 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 36 predicate places. [2023-11-19 07:42:01,698 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 47 transitions, 342 flow [2023-11-19 07:42:01,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 101.9) internal successors, (1019), 10 states have internal predecessors, (1019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:42:01,699 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:42:01,699 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:42:01,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-19 07:42:01,700 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-19 07:42:01,700 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:42:01,700 INFO L85 PathProgramCache]: Analyzing trace with hash 1588781571, now seen corresponding path program 6 times [2023-11-19 07:42:01,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:42:01,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983547557] [2023-11-19 07:42:01,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:42:01,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:42:01,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:42:01,811 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:42:01,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:42:02,018 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:42:02,018 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 07:42:02,019 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining) [2023-11-19 07:42:02,021 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2023-11-19 07:42:02,023 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 6 remaining) [2023-11-19 07:42:02,023 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 6 remaining) [2023-11-19 07:42:02,024 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 6 remaining) [2023-11-19 07:42:02,024 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2023-11-19 07:42:02,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-19 07:42:02,025 INFO L445 BasicCegarLoop]: Path program histogram: [6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:42:02,034 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-19 07:42:02,034 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-19 07:42:02,140 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre33 could not be translated [2023-11-19 07:42:02,143 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre35 could not be translated [2023-11-19 07:42:02,145 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre37 could not be translated [2023-11-19 07:42:02,195 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 07:42:02 BasicIcfg [2023-11-19 07:42:02,195 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-19 07:42:02,196 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 07:42:02,196 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 07:42:02,196 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 07:42:02,197 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:41:23" (3/4) ... [2023-11-19 07:42:02,198 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-11-19 07:42:02,225 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre33 could not be translated [2023-11-19 07:42:02,226 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre35 could not be translated [2023-11-19 07:42:02,227 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre37 could not be translated [2023-11-19 07:42:02,300 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07df8145-874f-4413-8820-ebab382956cc/bin/uautomizer-verify-uCwYo4JHxu/witness.graphml [2023-11-19 07:42:02,300 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 07:42:02,301 INFO L158 Benchmark]: Toolchain (without parser) took 41380.83ms. Allocated memory was 136.3MB in the beginning and 738.2MB in the end (delta: 601.9MB). Free memory was 90.6MB in the beginning and 443.1MB in the end (delta: -352.5MB). Peak memory consumption was 251.6MB. Max. memory is 16.1GB. [2023-11-19 07:42:02,302 INFO L158 Benchmark]: CDTParser took 0.43ms. Allocated memory is still 136.3MB. Free memory is still 111.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 07:42:02,302 INFO L158 Benchmark]: CACSL2BoogieTranslator took 900.22ms. Allocated memory is still 136.3MB. Free memory was 90.6MB in the beginning and 65.0MB in the end (delta: 25.6MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2023-11-19 07:42:02,303 INFO L158 Benchmark]: Boogie Procedure Inliner took 92.07ms. Allocated memory is still 136.3MB. Free memory was 65.0MB in the beginning and 105.1MB in the end (delta: -40.1MB). Peak memory consumption was 7.6MB. Max. memory is 16.1GB. [2023-11-19 07:42:02,303 INFO L158 Benchmark]: Boogie Preprocessor took 66.99ms. Allocated memory was 136.3MB in the beginning and 195.0MB in the end (delta: 58.7MB). Free memory was 105.1MB in the beginning and 163.9MB in the end (delta: -58.7MB). Peak memory consumption was 5.0MB. Max. memory is 16.1GB. [2023-11-19 07:42:02,304 INFO L158 Benchmark]: RCFGBuilder took 1391.73ms. Allocated memory is still 195.0MB. Free memory was 163.9MB in the beginning and 150.6MB in the end (delta: 13.3MB). Peak memory consumption was 79.7MB. Max. memory is 16.1GB. [2023-11-19 07:42:02,304 INFO L158 Benchmark]: TraceAbstraction took 38816.43ms. Allocated memory was 195.0MB in the beginning and 738.2MB in the end (delta: 543.2MB). Free memory was 150.6MB in the beginning and 458.8MB in the end (delta: -308.2MB). Peak memory consumption was 235.0MB. Max. memory is 16.1GB. [2023-11-19 07:42:02,305 INFO L158 Benchmark]: Witness Printer took 104.85ms. Allocated memory is still 738.2MB. Free memory was 458.8MB in the beginning and 443.1MB in the end (delta: 15.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-19 07:42:02,307 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks