./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe017_tso.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14e3db23-a0b5-4eca-9c6b-ed7f0e4df7e8/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14e3db23-a0b5-4eca-9c6b-ed7f0e4df7e8/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_14e3db23-a0b5-4eca-9c6b-ed7f0e4df7e8/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14e3db23-a0b5-4eca-9c6b-ed7f0e4df7e8/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe017_tso.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14e3db23-a0b5-4eca-9c6b-ed7f0e4df7e8/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_14e3db23-a0b5-4eca-9c6b-ed7f0e4df7e8/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 f42e8f5213d7b87505465b65029831bd75698bf771428502e6718d43723a660f --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:56:02,402 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:56:02,539 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14e3db23-a0b5-4eca-9c6b-ed7f0e4df7e8/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-19 07:56:02,546 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:56:02,546 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:56:02,572 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:56:02,572 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:56:02,573 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:56:02,574 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:56:02,575 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:56:02,576 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:56:02,576 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:56:02,577 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:56:02,578 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:56:02,578 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:56:02,579 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:56:02,580 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:56:02,580 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:56:02,581 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:56:02,582 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:56:02,583 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:56:02,583 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:56:02,584 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:56:02,584 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:56:02,585 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:56:02,586 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:56:02,586 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:56:02,587 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:56:02,587 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:56:02,588 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:56:02,589 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:56:02,589 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:56:02,589 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:56:02,590 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:56:02,590 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:56:02,591 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:56:02,591 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:56:02,592 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:56:02,592 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:56:02,592 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_14e3db23-a0b5-4eca-9c6b-ed7f0e4df7e8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14e3db23-a0b5-4eca-9c6b-ed7f0e4df7e8/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f42e8f5213d7b87505465b65029831bd75698bf771428502e6718d43723a660f [2023-11-19 07:56:02,926 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:56:02,959 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:56:02,964 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:56:02,966 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:56:02,967 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:56:02,968 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14e3db23-a0b5-4eca-9c6b-ed7f0e4df7e8/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/pthread-wmm/safe017_tso.i [2023-11-19 07:56:06,319 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:56:06,679 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:56:06,679 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14e3db23-a0b5-4eca-9c6b-ed7f0e4df7e8/sv-benchmarks/c/pthread-wmm/safe017_tso.i [2023-11-19 07:56:06,707 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14e3db23-a0b5-4eca-9c6b-ed7f0e4df7e8/bin/uautomizer-verify-uCwYo4JHxu/data/8cd78c8e7/5dc93d46b9dd4a2cbf5f49225a369522/FLAGdb1809fc6 [2023-11-19 07:56:06,727 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14e3db23-a0b5-4eca-9c6b-ed7f0e4df7e8/bin/uautomizer-verify-uCwYo4JHxu/data/8cd78c8e7/5dc93d46b9dd4a2cbf5f49225a369522 [2023-11-19 07:56:06,732 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:56:06,741 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:56:06,745 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:56:06,745 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:56:06,751 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:56:06,752 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:56:06" (1/1) ... [2023-11-19 07:56:06,753 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15674a49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:06, skipping insertion in model container [2023-11-19 07:56:06,754 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:56:06" (1/1) ... [2023-11-19 07:56:06,842 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:56:07,023 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_14e3db23-a0b5-4eca-9c6b-ed7f0e4df7e8/sv-benchmarks/c/pthread-wmm/safe017_tso.i[945,958] [2023-11-19 07:56:07,231 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:56:07,247 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:56:07,265 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_14e3db23-a0b5-4eca-9c6b-ed7f0e4df7e8/sv-benchmarks/c/pthread-wmm/safe017_tso.i[945,958] [2023-11-19 07:56:07,335 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:56:07,382 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:56:07,383 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:56:07,391 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:56:07,392 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:07 WrapperNode [2023-11-19 07:56:07,392 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:56:07,394 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:56:07,394 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:56:07,394 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:56:07,402 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:07" (1/1) ... [2023-11-19 07:56:07,427 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:07" (1/1) ... [2023-11-19 07:56:07,460 INFO L138 Inliner]: procedures = 176, calls = 51, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 68 [2023-11-19 07:56:07,461 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:56:07,461 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:56:07,462 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:56:07,462 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:56:07,472 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:07" (1/1) ... [2023-11-19 07:56:07,473 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:07" (1/1) ... [2023-11-19 07:56:07,493 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:07" (1/1) ... [2023-11-19 07:56:07,493 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:07" (1/1) ... [2023-11-19 07:56:07,500 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:07" (1/1) ... [2023-11-19 07:56:07,517 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:07" (1/1) ... [2023-11-19 07:56:07,519 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:07" (1/1) ... [2023-11-19 07:56:07,521 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:07" (1/1) ... [2023-11-19 07:56:07,524 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:56:07,525 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:56:07,526 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:56:07,528 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:56:07,530 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:07" (1/1) ... [2023-11-19 07:56:07,543 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:56:07,561 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14e3db23-a0b5-4eca-9c6b-ed7f0e4df7e8/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:56:07,578 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14e3db23-a0b5-4eca-9c6b-ed7f0e4df7e8/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:56:07,611 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14e3db23-a0b5-4eca-9c6b-ed7f0e4df7e8/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:56:07,629 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:56:07,629 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-19 07:56:07,629 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:56:07,630 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:56:07,630 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:56:07,630 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-19 07:56:07,630 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-19 07:56:07,631 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-19 07:56:07,631 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-19 07:56:07,631 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-19 07:56:07,633 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-19 07:56:07,633 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:56:07,634 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-19 07:56:07,634 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:56:07,634 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:56:07,636 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 07:56:07,838 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:56:07,842 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:56:08,053 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:56:08,066 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:56:08,066 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 07:56:08,070 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:56:08 BoogieIcfgContainer [2023-11-19 07:56:08,070 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:56:08,073 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:56:08,074 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:56:08,081 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:56:08,081 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:56:06" (1/3) ... [2023-11-19 07:56:08,082 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ac6ebb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:56:08, skipping insertion in model container [2023-11-19 07:56:08,083 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:07" (2/3) ... [2023-11-19 07:56:08,084 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ac6ebb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:56:08, skipping insertion in model container [2023-11-19 07:56:08,084 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:56:08" (3/3) ... [2023-11-19 07:56:08,086 INFO L112 eAbstractionObserver]: Analyzing ICFG safe017_tso.i [2023-11-19 07:56:08,097 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 07:56:08,110 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:56:08,111 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 07:56:08,111 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 07:56:08,198 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-19 07:56:08,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 97 places, 89 transitions, 190 flow [2023-11-19 07:56:08,297 INFO L124 PetriNetUnfolderBase]: 2/86 cut-off events. [2023-11-19 07:56:08,297 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:56:08,302 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96 conditions, 86 events. 2/86 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 52 event pairs, 0 based on Foata normal form. 0/83 useless extension candidates. Maximal degree in co-relation 71. Up to 2 conditions per place. [2023-11-19 07:56:08,303 INFO L82 GeneralOperation]: Start removeDead. Operand has 97 places, 89 transitions, 190 flow [2023-11-19 07:56:08,307 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 80 places, 71 transitions, 151 flow [2023-11-19 07:56:08,311 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:56:08,323 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 80 places, 71 transitions, 151 flow [2023-11-19 07:56:08,326 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 80 places, 71 transitions, 151 flow [2023-11-19 07:56:08,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 80 places, 71 transitions, 151 flow [2023-11-19 07:56:08,356 INFO L124 PetriNetUnfolderBase]: 1/71 cut-off events. [2023-11-19 07:56:08,356 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:56:08,357 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81 conditions, 71 events. 1/71 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 43 event pairs, 0 based on Foata normal form. 0/70 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2023-11-19 07:56:08,359 INFO L119 LiptonReduction]: Number of co-enabled transitions 1266 [2023-11-19 07:56:10,582 INFO L134 LiptonReduction]: Checked pairs total: 1667 [2023-11-19 07:56:10,582 INFO L136 LiptonReduction]: Total number of compositions: 57 [2023-11-19 07:56:10,600 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:56:10,607 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;@4ae82c60, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:56:10,607 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-19 07:56:10,614 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:56:10,615 INFO L124 PetriNetUnfolderBase]: 0/14 cut-off events. [2023-11-19 07:56:10,615 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:56:10,615 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:56:10,616 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:56:10,617 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-19 07:56:10,622 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:56:10,623 INFO L85 PathProgramCache]: Analyzing trace with hash 360161760, now seen corresponding path program 1 times [2023-11-19 07:56:10,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:56:10,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003791200] [2023-11-19 07:56:10,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:56:10,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:56:10,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:56:11,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:56:11,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:56:11,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003791200] [2023-11-19 07:56:11,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003791200] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:56:11,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:56:11,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:56:11,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201381465] [2023-11-19 07:56:11,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:56:11,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:56:11,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:56:11,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:56:11,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:56:11,417 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 146 [2023-11-19 07:56:11,421 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 16 transitions, 41 flow. Second operand has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:11,421 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:56:11,421 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 146 [2023-11-19 07:56:11,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:56:11,663 INFO L124 PetriNetUnfolderBase]: 408/676 cut-off events. [2023-11-19 07:56:11,663 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2023-11-19 07:56:11,666 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1399 conditions, 676 events. 408/676 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2897 event pairs, 157 based on Foata normal form. 37/713 useless extension candidates. Maximal degree in co-relation 1388. Up to 382 conditions per place. [2023-11-19 07:56:11,672 INFO L140 encePairwiseOnDemand]: 139/146 looper letters, 23 selfloop transitions, 6 changer transitions 0/29 dead transitions. [2023-11-19 07:56:11,673 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 29 transitions, 131 flow [2023-11-19 07:56:11,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:56:11,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:56:11,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 255 transitions. [2023-11-19 07:56:11,689 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5821917808219178 [2023-11-19 07:56:11,690 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 255 transitions. [2023-11-19 07:56:11,690 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 255 transitions. [2023-11-19 07:56:11,692 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:56:11,695 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 255 transitions. [2023-11-19 07:56:11,698 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 85.0) internal successors, (255), 3 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:11,705 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 146.0) internal successors, (584), 4 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:11,705 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 146.0) internal successors, (584), 4 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:11,708 INFO L175 Difference]: Start difference. First operand has 26 places, 16 transitions, 41 flow. Second operand 3 states and 255 transitions. [2023-11-19 07:56:11,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 29 transitions, 131 flow [2023-11-19 07:56:11,712 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 29 transitions, 126 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-19 07:56:11,714 INFO L231 Difference]: Finished difference. Result has 27 places, 21 transitions, 84 flow [2023-11-19 07:56:11,716 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=146, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=84, PETRI_PLACES=27, PETRI_TRANSITIONS=21} [2023-11-19 07:56:11,720 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 1 predicate places. [2023-11-19 07:56:11,720 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 21 transitions, 84 flow [2023-11-19 07:56:11,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:11,721 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:56:11,721 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:56:11,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:56:11,722 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-19 07:56:11,722 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:56:11,722 INFO L85 PathProgramCache]: Analyzing trace with hash -1719887808, now seen corresponding path program 1 times [2023-11-19 07:56:11,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:56:11,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694335598] [2023-11-19 07:56:11,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:56:11,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:56:11,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:56:11,907 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 07:56:11,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:56:11,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694335598] [2023-11-19 07:56:11,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694335598] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:56:11,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:56:11,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:56:11,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898558226] [2023-11-19 07:56:11,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:56:11,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:56:11,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:56:11,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:56:11,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:56:11,929 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 146 [2023-11-19 07:56:11,930 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 21 transitions, 84 flow. Second operand has 4 states, 4 states have (on average 77.25) internal successors, (309), 4 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:11,930 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:56:11,930 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 146 [2023-11-19 07:56:11,930 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:56:12,067 INFO L124 PetriNetUnfolderBase]: 380/633 cut-off events. [2023-11-19 07:56:12,067 INFO L125 PetriNetUnfolderBase]: For 274/274 co-relation queries the response was YES. [2023-11-19 07:56:12,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1763 conditions, 633 events. 380/633 cut-off events. For 274/274 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2561 event pairs, 85 based on Foata normal form. 9/642 useless extension candidates. Maximal degree in co-relation 1751. Up to 264 conditions per place. [2023-11-19 07:56:12,075 INFO L140 encePairwiseOnDemand]: 139/146 looper letters, 26 selfloop transitions, 7 changer transitions 0/33 dead transitions. [2023-11-19 07:56:12,076 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 33 transitions, 190 flow [2023-11-19 07:56:12,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:56:12,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 07:56:12,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 331 transitions. [2023-11-19 07:56:12,094 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5667808219178082 [2023-11-19 07:56:12,095 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 331 transitions. [2023-11-19 07:56:12,095 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 331 transitions. [2023-11-19 07:56:12,096 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:56:12,096 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 331 transitions. [2023-11-19 07:56:12,098 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 82.75) internal successors, (331), 4 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:12,101 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 146.0) internal successors, (730), 5 states have internal predecessors, (730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:12,102 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 146.0) internal successors, (730), 5 states have internal predecessors, (730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:12,102 INFO L175 Difference]: Start difference. First operand has 27 places, 21 transitions, 84 flow. Second operand 4 states and 331 transitions. [2023-11-19 07:56:12,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 33 transitions, 190 flow [2023-11-19 07:56:12,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 33 transitions, 172 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:56:12,107 INFO L231 Difference]: Finished difference. Result has 31 places, 24 transitions, 120 flow [2023-11-19 07:56:12,107 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=146, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=120, PETRI_PLACES=31, PETRI_TRANSITIONS=24} [2023-11-19 07:56:12,108 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 5 predicate places. [2023-11-19 07:56:12,108 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 24 transitions, 120 flow [2023-11-19 07:56:12,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 77.25) internal successors, (309), 4 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:12,109 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:56:12,109 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:56:12,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:56:12,110 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-19 07:56:12,111 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:56:12,111 INFO L85 PathProgramCache]: Analyzing trace with hash -1719888676, now seen corresponding path program 1 times [2023-11-19 07:56:12,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:56:12,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148155527] [2023-11-19 07:56:12,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:56:12,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:56:12,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:56:12,246 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 07:56:12,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:56:12,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148155527] [2023-11-19 07:56:12,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148155527] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:56:12,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:56:12,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:56:12,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776662346] [2023-11-19 07:56:12,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:56:12,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:56:12,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:56:12,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:56:12,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:56:12,274 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 146 [2023-11-19 07:56:12,275 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 24 transitions, 120 flow. Second operand has 4 states, 4 states have (on average 77.25) internal successors, (309), 4 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:12,275 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:56:12,275 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 146 [2023-11-19 07:56:12,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:56:12,430 INFO L124 PetriNetUnfolderBase]: 365/609 cut-off events. [2023-11-19 07:56:12,430 INFO L125 PetriNetUnfolderBase]: For 500/500 co-relation queries the response was YES. [2023-11-19 07:56:12,434 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1866 conditions, 609 events. 365/609 cut-off events. For 500/500 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2503 event pairs, 61 based on Foata normal form. 3/612 useless extension candidates. Maximal degree in co-relation 1851. Up to 304 conditions per place. [2023-11-19 07:56:12,439 INFO L140 encePairwiseOnDemand]: 139/146 looper letters, 33 selfloop transitions, 11 changer transitions 0/44 dead transitions. [2023-11-19 07:56:12,439 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 44 transitions, 282 flow [2023-11-19 07:56:12,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:56:12,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 07:56:12,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 340 transitions. [2023-11-19 07:56:12,442 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5821917808219178 [2023-11-19 07:56:12,442 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 340 transitions. [2023-11-19 07:56:12,443 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 340 transitions. [2023-11-19 07:56:12,443 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:56:12,444 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 340 transitions. [2023-11-19 07:56:12,445 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 85.0) internal successors, (340), 4 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:12,448 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 146.0) internal successors, (730), 5 states have internal predecessors, (730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:12,449 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 146.0) internal successors, (730), 5 states have internal predecessors, (730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:12,449 INFO L175 Difference]: Start difference. First operand has 31 places, 24 transitions, 120 flow. Second operand 4 states and 340 transitions. [2023-11-19 07:56:12,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 44 transitions, 282 flow [2023-11-19 07:56:12,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 44 transitions, 277 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:56:12,456 INFO L231 Difference]: Finished difference. Result has 35 places, 28 transitions, 184 flow [2023-11-19 07:56:12,457 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=146, PETRI_DIFFERENCE_MINUEND_FLOW=117, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=184, PETRI_PLACES=35, PETRI_TRANSITIONS=28} [2023-11-19 07:56:12,458 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 9 predicate places. [2023-11-19 07:56:12,463 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 28 transitions, 184 flow [2023-11-19 07:56:12,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 77.25) internal successors, (309), 4 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:12,465 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:56:12,465 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:56:12,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 07:56:12,465 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-19 07:56:12,466 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:56:12,466 INFO L85 PathProgramCache]: Analyzing trace with hash -1776915844, now seen corresponding path program 1 times [2023-11-19 07:56:12,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:56:12,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185996753] [2023-11-19 07:56:12,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:56:12,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:56:12,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:56:12,610 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 07:56:12,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:56:12,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185996753] [2023-11-19 07:56:12,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185996753] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:56:12,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:56:12,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:56:12,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093147797] [2023-11-19 07:56:12,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:56:12,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:56:12,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:56:12,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:56:12,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:56:12,630 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 146 [2023-11-19 07:56:12,631 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 28 transitions, 184 flow. Second operand has 4 states, 4 states have (on average 77.5) internal successors, (310), 4 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:12,632 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:56:12,632 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 146 [2023-11-19 07:56:12,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:56:12,775 INFO L124 PetriNetUnfolderBase]: 351/588 cut-off events. [2023-11-19 07:56:12,776 INFO L125 PetriNetUnfolderBase]: For 982/982 co-relation queries the response was YES. [2023-11-19 07:56:12,778 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2060 conditions, 588 events. 351/588 cut-off events. For 982/982 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2376 event pairs, 54 based on Foata normal form. 3/591 useless extension candidates. Maximal degree in co-relation 2042. Up to 293 conditions per place. [2023-11-19 07:56:12,783 INFO L140 encePairwiseOnDemand]: 139/146 looper letters, 35 selfloop transitions, 15 changer transitions 0/50 dead transitions. [2023-11-19 07:56:12,783 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 50 transitions, 401 flow [2023-11-19 07:56:12,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:56:12,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 07:56:12,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 339 transitions. [2023-11-19 07:56:12,785 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5804794520547946 [2023-11-19 07:56:12,786 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 339 transitions. [2023-11-19 07:56:12,786 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 339 transitions. [2023-11-19 07:56:12,786 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:56:12,787 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 339 transitions. [2023-11-19 07:56:12,788 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 84.75) internal successors, (339), 4 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:12,790 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 146.0) internal successors, (730), 5 states have internal predecessors, (730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:12,791 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 146.0) internal successors, (730), 5 states have internal predecessors, (730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:12,791 INFO L175 Difference]: Start difference. First operand has 35 places, 28 transitions, 184 flow. Second operand 4 states and 339 transitions. [2023-11-19 07:56:12,792 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 50 transitions, 401 flow [2023-11-19 07:56:12,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 50 transitions, 401 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:56:12,799 INFO L231 Difference]: Finished difference. Result has 41 places, 36 transitions, 329 flow [2023-11-19 07:56:12,800 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=146, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=329, PETRI_PLACES=41, PETRI_TRANSITIONS=36} [2023-11-19 07:56:12,802 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 15 predicate places. [2023-11-19 07:56:12,802 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 36 transitions, 329 flow [2023-11-19 07:56:12,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 77.5) internal successors, (310), 4 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:12,804 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:56:12,804 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:56:12,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 07:56:12,806 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-19 07:56:12,806 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:56:12,807 INFO L85 PathProgramCache]: Analyzing trace with hash -1905685526, now seen corresponding path program 1 times [2023-11-19 07:56:12,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:56:12,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881063221] [2023-11-19 07:56:12,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:56:12,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:56:12,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:56:12,965 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 07:56:12,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:56:12,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881063221] [2023-11-19 07:56:12,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881063221] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:56:12,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:56:12,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:56:12,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838887812] [2023-11-19 07:56:12,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:56:12,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:56:12,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:56:12,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:56:12,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:56:13,000 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 146 [2023-11-19 07:56:13,001 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 36 transitions, 329 flow. Second operand has 4 states, 4 states have (on average 77.75) internal successors, (311), 4 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:13,001 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:56:13,001 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 146 [2023-11-19 07:56:13,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:56:13,149 INFO L124 PetriNetUnfolderBase]: 374/637 cut-off events. [2023-11-19 07:56:13,149 INFO L125 PetriNetUnfolderBase]: For 1814/1814 co-relation queries the response was YES. [2023-11-19 07:56:13,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2485 conditions, 637 events. 374/637 cut-off events. For 1814/1814 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2729 event pairs, 67 based on Foata normal form. 6/643 useless extension candidates. Maximal degree in co-relation 2462. Up to 295 conditions per place. [2023-11-19 07:56:13,157 INFO L140 encePairwiseOnDemand]: 139/146 looper letters, 33 selfloop transitions, 19 changer transitions 1/53 dead transitions. [2023-11-19 07:56:13,157 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 53 transitions, 490 flow [2023-11-19 07:56:13,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:56:13,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 07:56:13,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 340 transitions. [2023-11-19 07:56:13,159 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5821917808219178 [2023-11-19 07:56:13,160 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 340 transitions. [2023-11-19 07:56:13,160 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 340 transitions. [2023-11-19 07:56:13,160 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:56:13,160 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 340 transitions. [2023-11-19 07:56:13,162 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 85.0) internal successors, (340), 4 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:13,164 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 146.0) internal successors, (730), 5 states have internal predecessors, (730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:13,165 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 146.0) internal successors, (730), 5 states have internal predecessors, (730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:13,165 INFO L175 Difference]: Start difference. First operand has 41 places, 36 transitions, 329 flow. Second operand 4 states and 340 transitions. [2023-11-19 07:56:13,165 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 53 transitions, 490 flow [2023-11-19 07:56:13,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 53 transitions, 475 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:56:13,176 INFO L231 Difference]: Finished difference. Result has 45 places, 36 transitions, 384 flow [2023-11-19 07:56:13,177 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=146, PETRI_DIFFERENCE_MINUEND_FLOW=315, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=384, PETRI_PLACES=45, PETRI_TRANSITIONS=36} [2023-11-19 07:56:13,181 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 19 predicate places. [2023-11-19 07:56:13,181 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 36 transitions, 384 flow [2023-11-19 07:56:13,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 77.75) internal successors, (311), 4 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:13,183 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:56:13,183 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:56:13,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 07:56:13,183 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-19 07:56:13,185 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:56:13,185 INFO L85 PathProgramCache]: Analyzing trace with hash 750208283, now seen corresponding path program 1 times [2023-11-19 07:56:13,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:56:13,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589907879] [2023-11-19 07:56:13,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:56:13,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:56:13,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:56:13,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:56:13,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:56:13,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589907879] [2023-11-19 07:56:13,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589907879] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:56:13,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:56:13,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:56:13,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619365069] [2023-11-19 07:56:13,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:56:13,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:56:13,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:56:13,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:56:13,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:56:13,367 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 146 [2023-11-19 07:56:13,368 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 36 transitions, 384 flow. Second operand has 4 states, 4 states have (on average 79.75) internal successors, (319), 4 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:13,368 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:56:13,368 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 146 [2023-11-19 07:56:13,369 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:56:13,539 INFO L124 PetriNetUnfolderBase]: 298/569 cut-off events. [2023-11-19 07:56:13,540 INFO L125 PetriNetUnfolderBase]: For 3441/3453 co-relation queries the response was YES. [2023-11-19 07:56:13,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2310 conditions, 569 events. 298/569 cut-off events. For 3441/3453 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 2815 event pairs, 52 based on Foata normal form. 30/598 useless extension candidates. Maximal degree in co-relation 2283. Up to 333 conditions per place. [2023-11-19 07:56:13,546 INFO L140 encePairwiseOnDemand]: 140/146 looper letters, 56 selfloop transitions, 6 changer transitions 33/100 dead transitions. [2023-11-19 07:56:13,546 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 100 transitions, 1243 flow [2023-11-19 07:56:13,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:56:13,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 07:56:13,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 428 transitions. [2023-11-19 07:56:13,548 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5863013698630137 [2023-11-19 07:56:13,548 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 428 transitions. [2023-11-19 07:56:13,549 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 428 transitions. [2023-11-19 07:56:13,549 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:56:13,549 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 428 transitions. [2023-11-19 07:56:13,551 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 85.6) internal successors, (428), 5 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:13,553 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 146.0) internal successors, (876), 6 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:13,553 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 146.0) internal successors, (876), 6 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:13,554 INFO L175 Difference]: Start difference. First operand has 45 places, 36 transitions, 384 flow. Second operand 5 states and 428 transitions. [2023-11-19 07:56:13,554 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 100 transitions, 1243 flow [2023-11-19 07:56:13,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 100 transitions, 1231 flow, removed 6 selfloop flow, removed 0 redundant places. [2023-11-19 07:56:13,562 INFO L231 Difference]: Finished difference. Result has 52 places, 41 transitions, 424 flow [2023-11-19 07:56:13,563 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=146, PETRI_DIFFERENCE_MINUEND_FLOW=378, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=424, PETRI_PLACES=52, PETRI_TRANSITIONS=41} [2023-11-19 07:56:13,563 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 26 predicate places. [2023-11-19 07:56:13,564 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 41 transitions, 424 flow [2023-11-19 07:56:13,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 79.75) internal successors, (319), 4 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:13,564 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:56:13,564 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:56:13,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 07:56:13,565 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-19 07:56:13,565 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:56:13,565 INFO L85 PathProgramCache]: Analyzing trace with hash 1979467128, now seen corresponding path program 1 times [2023-11-19 07:56:13,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:56:13,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414006384] [2023-11-19 07:56:13,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:56:13,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:56:13,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:56:13,684 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 07:56:13,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:56:13,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414006384] [2023-11-19 07:56:13,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414006384] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:56:13,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:56:13,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:56:13,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215095969] [2023-11-19 07:56:13,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:56:13,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:56:13,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:56:13,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:56:13,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:56:13,714 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 146 [2023-11-19 07:56:13,715 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 41 transitions, 424 flow. Second operand has 5 states, 5 states have (on average 79.4) internal successors, (397), 5 states have internal predecessors, (397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:13,715 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:56:13,715 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 146 [2023-11-19 07:56:13,715 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:56:13,887 INFO L124 PetriNetUnfolderBase]: 225/465 cut-off events. [2023-11-19 07:56:13,888 INFO L125 PetriNetUnfolderBase]: For 3246/3266 co-relation queries the response was YES. [2023-11-19 07:56:13,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2355 conditions, 465 events. 225/465 cut-off events. For 3246/3266 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2327 event pairs, 15 based on Foata normal form. 30/494 useless extension candidates. Maximal degree in co-relation 2323. Up to 211 conditions per place. [2023-11-19 07:56:13,893 INFO L140 encePairwiseOnDemand]: 140/146 looper letters, 61 selfloop transitions, 10 changer transitions 44/119 dead transitions. [2023-11-19 07:56:13,894 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 119 transitions, 1491 flow [2023-11-19 07:56:13,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:56:13,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-19 07:56:13,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 597 transitions. [2023-11-19 07:56:13,899 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5841487279843445 [2023-11-19 07:56:13,900 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 597 transitions. [2023-11-19 07:56:13,900 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 597 transitions. [2023-11-19 07:56:13,901 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:56:13,901 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 597 transitions. [2023-11-19 07:56:13,903 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 85.28571428571429) internal successors, (597), 7 states have internal predecessors, (597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:13,907 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 146.0) internal successors, (1168), 8 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:13,908 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 146.0) internal successors, (1168), 8 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:13,908 INFO L175 Difference]: Start difference. First operand has 52 places, 41 transitions, 424 flow. Second operand 7 states and 597 transitions. [2023-11-19 07:56:13,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 119 transitions, 1491 flow [2023-11-19 07:56:13,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 119 transitions, 1491 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:56:13,923 INFO L231 Difference]: Finished difference. Result has 61 places, 44 transitions, 484 flow [2023-11-19 07:56:13,923 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=146, PETRI_DIFFERENCE_MINUEND_FLOW=424, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=484, PETRI_PLACES=61, PETRI_TRANSITIONS=44} [2023-11-19 07:56:13,924 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 35 predicate places. [2023-11-19 07:56:13,924 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 44 transitions, 484 flow [2023-11-19 07:56:13,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 79.4) internal successors, (397), 5 states have internal predecessors, (397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:13,925 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:56:13,925 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:56:13,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 07:56:13,925 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-19 07:56:13,926 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:56:13,926 INFO L85 PathProgramCache]: Analyzing trace with hash 1893367567, now seen corresponding path program 1 times [2023-11-19 07:56:13,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:56:13,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136237814] [2023-11-19 07:56:13,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:56:13,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:56:13,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:56:14,112 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 07:56:14,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:56:14,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136237814] [2023-11-19 07:56:14,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136237814] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:56:14,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:56:14,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:56:14,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519258748] [2023-11-19 07:56:14,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:56:14,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:56:14,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:56:14,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:56:14,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:56:14,128 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 146 [2023-11-19 07:56:14,129 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 44 transitions, 484 flow. Second operand has 5 states, 5 states have (on average 77.6) internal successors, (388), 5 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:14,129 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:56:14,129 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 146 [2023-11-19 07:56:14,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:56:14,313 INFO L124 PetriNetUnfolderBase]: 291/616 cut-off events. [2023-11-19 07:56:14,313 INFO L125 PetriNetUnfolderBase]: For 4756/4756 co-relation queries the response was YES. [2023-11-19 07:56:14,321 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3762 conditions, 616 events. 291/616 cut-off events. For 4756/4756 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 3366 event pairs, 51 based on Foata normal form. 7/623 useless extension candidates. Maximal degree in co-relation 3725. Up to 336 conditions per place. [2023-11-19 07:56:14,324 INFO L140 encePairwiseOnDemand]: 139/146 looper letters, 37 selfloop transitions, 11 changer transitions 39/87 dead transitions. [2023-11-19 07:56:14,324 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 87 transitions, 1032 flow [2023-11-19 07:56:14,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:56:14,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 07:56:14,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 418 transitions. [2023-11-19 07:56:14,327 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5726027397260274 [2023-11-19 07:56:14,327 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 418 transitions. [2023-11-19 07:56:14,327 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 418 transitions. [2023-11-19 07:56:14,328 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:56:14,328 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 418 transitions. [2023-11-19 07:56:14,330 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 83.6) internal successors, (418), 5 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:14,332 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 146.0) internal successors, (876), 6 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:14,332 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 146.0) internal successors, (876), 6 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:14,333 INFO L175 Difference]: Start difference. First operand has 61 places, 44 transitions, 484 flow. Second operand 5 states and 418 transitions. [2023-11-19 07:56:14,333 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 87 transitions, 1032 flow [2023-11-19 07:56:14,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 87 transitions, 953 flow, removed 21 selfloop flow, removed 5 redundant places. [2023-11-19 07:56:14,361 INFO L231 Difference]: Finished difference. Result has 60 places, 30 transitions, 338 flow [2023-11-19 07:56:14,361 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=146, PETRI_DIFFERENCE_MINUEND_FLOW=456, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=338, PETRI_PLACES=60, PETRI_TRANSITIONS=30} [2023-11-19 07:56:14,364 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 34 predicate places. [2023-11-19 07:56:14,364 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 30 transitions, 338 flow [2023-11-19 07:56:14,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 77.6) internal successors, (388), 5 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:14,364 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:56:14,365 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:56:14,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-19 07:56:14,365 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-19 07:56:14,366 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:56:14,366 INFO L85 PathProgramCache]: Analyzing trace with hash 1954797101, now seen corresponding path program 1 times [2023-11-19 07:56:14,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:56:14,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832214151] [2023-11-19 07:56:14,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:56:14,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:56:14,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:56:14,524 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 07:56:14,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:56:14,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832214151] [2023-11-19 07:56:14,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832214151] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:56:14,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:56:14,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:56:14,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784259948] [2023-11-19 07:56:14,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:56:14,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:56:14,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:56:14,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:56:14,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:56:14,546 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 146 [2023-11-19 07:56:14,547 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 30 transitions, 338 flow. Second operand has 6 states, 6 states have (on average 79.16666666666667) internal successors, (475), 6 states have internal predecessors, (475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:14,547 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:56:14,547 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 146 [2023-11-19 07:56:14,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:56:14,662 INFO L124 PetriNetUnfolderBase]: 72/168 cut-off events. [2023-11-19 07:56:14,663 INFO L125 PetriNetUnfolderBase]: For 1368/1384 co-relation queries the response was YES. [2023-11-19 07:56:14,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 954 conditions, 168 events. 72/168 cut-off events. For 1368/1384 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 621 event pairs, 8 based on Foata normal form. 14/180 useless extension candidates. Maximal degree in co-relation 918. Up to 65 conditions per place. [2023-11-19 07:56:14,665 INFO L140 encePairwiseOnDemand]: 140/146 looper letters, 19 selfloop transitions, 10 changer transitions 27/57 dead transitions. [2023-11-19 07:56:14,665 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 57 transitions, 782 flow [2023-11-19 07:56:14,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:56:14,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-19 07:56:14,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 584 transitions. [2023-11-19 07:56:14,668 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5714285714285714 [2023-11-19 07:56:14,668 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 584 transitions. [2023-11-19 07:56:14,668 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 584 transitions. [2023-11-19 07:56:14,669 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:56:14,669 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 584 transitions. [2023-11-19 07:56:14,671 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 83.42857142857143) internal successors, (584), 7 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:14,674 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 146.0) internal successors, (1168), 8 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:14,675 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 146.0) internal successors, (1168), 8 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:14,675 INFO L175 Difference]: Start difference. First operand has 60 places, 30 transitions, 338 flow. Second operand 7 states and 584 transitions. [2023-11-19 07:56:14,675 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 57 transitions, 782 flow [2023-11-19 07:56:14,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 57 transitions, 552 flow, removed 16 selfloop flow, removed 13 redundant places. [2023-11-19 07:56:14,681 INFO L231 Difference]: Finished difference. Result has 53 places, 22 transitions, 180 flow [2023-11-19 07:56:14,681 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=146, PETRI_DIFFERENCE_MINUEND_FLOW=229, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=180, PETRI_PLACES=53, PETRI_TRANSITIONS=22} [2023-11-19 07:56:14,682 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 27 predicate places. [2023-11-19 07:56:14,682 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 22 transitions, 180 flow [2023-11-19 07:56:14,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 79.16666666666667) internal successors, (475), 6 states have internal predecessors, (475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:14,683 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:56:14,683 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:56:14,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-19 07:56:14,683 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-19 07:56:14,684 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:56:14,684 INFO L85 PathProgramCache]: Analyzing trace with hash 709849662, now seen corresponding path program 1 times [2023-11-19 07:56:14,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:56:14,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654776285] [2023-11-19 07:56:14,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:56:14,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:56:14,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:56:14,814 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 07:56:14,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:56:14,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654776285] [2023-11-19 07:56:14,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654776285] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:56:14,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:56:14,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:56:14,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807476867] [2023-11-19 07:56:14,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:56:14,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:56:14,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:56:14,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:56:14,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:56:14,828 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 146 [2023-11-19 07:56:14,829 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 22 transitions, 180 flow. Second operand has 5 states, 5 states have (on average 78.2) internal successors, (391), 5 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:14,830 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:56:14,830 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 146 [2023-11-19 07:56:14,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:56:14,888 INFO L124 PetriNetUnfolderBase]: 23/59 cut-off events. [2023-11-19 07:56:14,889 INFO L125 PetriNetUnfolderBase]: For 167/167 co-relation queries the response was YES. [2023-11-19 07:56:14,889 INFO L83 FinitePrefix]: Finished finitePrefix Result has 312 conditions, 59 events. 23/59 cut-off events. For 167/167 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 117 event pairs, 0 based on Foata normal form. 1/60 useless extension candidates. Maximal degree in co-relation 295. Up to 18 conditions per place. [2023-11-19 07:56:14,890 INFO L140 encePairwiseOnDemand]: 140/146 looper letters, 0 selfloop transitions, 0 changer transitions 34/34 dead transitions. [2023-11-19 07:56:14,890 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 34 transitions, 299 flow [2023-11-19 07:56:14,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:56:14,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:56:14,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 477 transitions. [2023-11-19 07:56:14,893 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5445205479452054 [2023-11-19 07:56:14,893 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 477 transitions. [2023-11-19 07:56:14,893 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 477 transitions. [2023-11-19 07:56:14,894 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:56:14,894 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 477 transitions. [2023-11-19 07:56:14,896 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 79.5) internal successors, (477), 6 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:14,898 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 146.0) internal successors, (1022), 7 states have internal predecessors, (1022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:14,899 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 146.0) internal successors, (1022), 7 states have internal predecessors, (1022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:14,899 INFO L175 Difference]: Start difference. First operand has 53 places, 22 transitions, 180 flow. Second operand 6 states and 477 transitions. [2023-11-19 07:56:14,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 34 transitions, 299 flow [2023-11-19 07:56:14,901 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 34 transitions, 208 flow, removed 8 selfloop flow, removed 18 redundant places. [2023-11-19 07:56:14,901 INFO L231 Difference]: Finished difference. Result has 37 places, 0 transitions, 0 flow [2023-11-19 07:56:14,901 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=146, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=37, PETRI_TRANSITIONS=0} [2023-11-19 07:56:14,902 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 11 predicate places. [2023-11-19 07:56:14,902 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 0 transitions, 0 flow [2023-11-19 07:56:14,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 78.2) internal successors, (391), 5 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:14,905 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-11-19 07:56:14,906 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-11-19 07:56:14,906 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-11-19 07:56:14,906 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-11-19 07:56:14,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-19 07:56:14,907 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:56:14,910 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-19 07:56:14,911 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-19 07:56:14,914 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 07:56:14 BasicIcfg [2023-11-19 07:56:14,914 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-19 07:56:14,915 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 07:56:14,915 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 07:56:14,915 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 07:56:14,916 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:56:08" (3/4) ... [2023-11-19 07:56:14,918 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-19 07:56:14,923 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2023-11-19 07:56:14,923 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2023-11-19 07:56:14,923 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2023-11-19 07:56:14,927 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2023-11-19 07:56:14,928 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-19 07:56:14,928 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-11-19 07:56:14,939 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-19 07:56:15,021 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14e3db23-a0b5-4eca-9c6b-ed7f0e4df7e8/bin/uautomizer-verify-uCwYo4JHxu/witness.graphml [2023-11-19 07:56:15,022 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14e3db23-a0b5-4eca-9c6b-ed7f0e4df7e8/bin/uautomizer-verify-uCwYo4JHxu/witness.yml [2023-11-19 07:56:15,022 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 07:56:15,023 INFO L158 Benchmark]: Toolchain (without parser) took 8281.98ms. Allocated memory was 163.6MB in the beginning and 197.1MB in the end (delta: 33.6MB). Free memory was 127.0MB in the beginning and 160.7MB in the end (delta: -33.7MB). Peak memory consumption was 112.1MB. Max. memory is 16.1GB. [2023-11-19 07:56:15,023 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 121.6MB. Free memory was 88.3MB in the beginning and 88.2MB in the end (delta: 133.0kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 07:56:15,024 INFO L158 Benchmark]: CACSL2BoogieTranslator took 647.40ms. Allocated memory is still 163.6MB. Free memory was 126.1MB in the beginning and 115.9MB in the end (delta: 10.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-19 07:56:15,024 INFO L158 Benchmark]: Boogie Procedure Inliner took 67.34ms. Allocated memory is still 163.6MB. Free memory was 115.9MB in the beginning and 113.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 07:56:15,025 INFO L158 Benchmark]: Boogie Preprocessor took 63.02ms. Allocated memory is still 163.6MB. Free memory was 113.8MB in the beginning and 111.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 07:56:15,025 INFO L158 Benchmark]: RCFGBuilder took 545.20ms. Allocated memory is still 163.6MB. Free memory was 111.7MB in the beginning and 98.2MB in the end (delta: 13.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-19 07:56:15,026 INFO L158 Benchmark]: TraceAbstraction took 6841.27ms. Allocated memory was 163.6MB in the beginning and 197.1MB in the end (delta: 33.6MB). Free memory was 98.0MB in the beginning and 50.8MB in the end (delta: 47.2MB). Peak memory consumption was 83.9MB. Max. memory is 16.1GB. [2023-11-19 07:56:15,026 INFO L158 Benchmark]: Witness Printer took 107.21ms. Allocated memory is still 197.1MB. Free memory was 49.7MB in the beginning and 160.7MB in the end (delta: -111.0MB). Peak memory consumption was 2.2MB. Max. memory is 16.1GB. [2023-11-19 07:56:15,028 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 121.6MB. Free memory was 88.3MB in the beginning and 88.2MB in the end (delta: 133.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 647.40ms. Allocated memory is still 163.6MB. Free memory was 126.1MB in the beginning and 115.9MB in the end (delta: 10.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 67.34ms. Allocated memory is still 163.6MB. Free memory was 115.9MB in the beginning and 113.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 63.02ms. Allocated memory is still 163.6MB. Free memory was 113.8MB in the beginning and 111.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 545.20ms. Allocated memory is still 163.6MB. Free memory was 111.7MB in the beginning and 98.2MB in the end (delta: 13.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 6841.27ms. Allocated memory was 163.6MB in the beginning and 197.1MB in the end (delta: 33.6MB). Free memory was 98.0MB in the beginning and 50.8MB in the end (delta: 47.2MB). Peak memory consumption was 83.9MB. Max. memory is 16.1GB. * Witness Printer took 107.21ms. Allocated memory is still 197.1MB. Free memory was 49.7MB in the beginning and 160.7MB in the end (delta: -111.0MB). Peak memory consumption was 2.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.3s, 80 PlacesBefore, 26 PlacesAfterwards, 71 TransitionsBefore, 16 TransitionsAfterwards, 1266 CoEnabledTransitionPairs, 5 FixpointIterations, 17 TrivialSequentialCompositions, 38 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 1 ConcurrentYvCompositions, 1 ChoiceCompositions, 57 TotalNumberOfCompositions, 1667 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1017, independent: 956, independent conditional: 0, independent unconditional: 956, dependent: 61, dependent conditional: 0, dependent unconditional: 61, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 673, independent: 645, independent conditional: 0, independent unconditional: 645, dependent: 28, dependent conditional: 0, dependent unconditional: 28, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1017, independent: 311, independent conditional: 0, independent unconditional: 311, dependent: 33, dependent conditional: 0, dependent unconditional: 33, unknown: 673, unknown conditional: 0, unknown unconditional: 673] , Statistics on independence cache: Total cache size (in pairs): 41, Positive cache size: 30, Positive conditional cache size: 0, Positive unconditional cache size: 30, Negative cache size: 11, Negative conditional cache size: 0, Negative unconditional cache size: 11, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 18]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 114 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 6.7s, OverallIterations: 10, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.4s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 358 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 245 mSDsluCounter, 119 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 64 mSDsCounter, 67 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 644 IncrementalHoareTripleChecker+Invalid, 711 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 67 mSolverCounterUnsat, 55 mSDtfsCounter, 644 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 32 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=484occurred in iteration=7, InterpolantAutomatonStates: 49, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 113 NumberOfCodeBlocks, 113 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 103 ConstructedInterpolants, 0 QuantifiedInterpolants, 487 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-19 07:56:15,064 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14e3db23-a0b5-4eca-9c6b-ed7f0e4df7e8/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE