./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe029_tso.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc 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_5648d8d2-1896-4eab-96c9-93dbf4ce9257/bin/uautomizer-verify-NlZe1sFDwI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5648d8d2-1896-4eab-96c9-93dbf4ce9257/bin/uautomizer-verify-NlZe1sFDwI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5648d8d2-1896-4eab-96c9-93dbf4ce9257/bin/uautomizer-verify-NlZe1sFDwI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5648d8d2-1896-4eab-96c9-93dbf4ce9257/bin/uautomizer-verify-NlZe1sFDwI/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe029_tso.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5648d8d2-1896-4eab-96c9-93dbf4ce9257/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5648d8d2-1896-4eab-96c9-93dbf4ce9257/bin/uautomizer-verify-NlZe1sFDwI --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 ef851e22a0a98929f1b90876fcac5ec793e10efa4691f239ca948c8dc39b94fd --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 21:58:23,914 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 21:58:23,995 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5648d8d2-1896-4eab-96c9-93dbf4ce9257/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-24 21:58:24,000 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 21:58:24,001 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 21:58:24,029 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 21:58:24,029 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 21:58:24,033 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 21:58:24,034 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-24 21:58:24,035 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-24 21:58:24,036 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 21:58:24,036 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 21:58:24,038 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-24 21:58:24,039 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-24 21:58:24,042 INFO L153 SettingsManager]: * Use SBE=true [2023-11-24 21:58:24,042 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 21:58:24,044 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 21:58:24,046 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 21:58:24,046 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 21:58:24,049 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 21:58:24,050 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 21:58:24,051 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 21:58:24,051 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 21:58:24,052 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 21:58:24,052 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 21:58:24,053 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 21:58:24,053 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 21:58:24,054 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 21:58:24,055 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-24 21:58:24,055 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 21:58:24,057 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 21:58:24,058 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:58:24,058 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 21:58:24,058 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 21:58:24,059 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-24 21:58:24,059 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-24 21:58:24,059 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 21:58:24,059 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 21:58:24,060 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-24 21:58:24,060 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-24 21:58:24,060 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-24 21:58:24,061 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 21:58:24,061 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_5648d8d2-1896-4eab-96c9-93dbf4ce9257/bin/uautomizer-verify-NlZe1sFDwI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5648d8d2-1896-4eab-96c9-93dbf4ce9257/bin/uautomizer-verify-NlZe1sFDwI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ef851e22a0a98929f1b90876fcac5ec793e10efa4691f239ca948c8dc39b94fd [2023-11-24 21:58:24,355 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 21:58:24,398 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 21:58:24,404 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 21:58:24,407 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 21:58:24,407 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 21:58:24,409 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5648d8d2-1896-4eab-96c9-93dbf4ce9257/bin/uautomizer-verify-NlZe1sFDwI/../../sv-benchmarks/c/pthread-wmm/safe029_tso.i [2023-11-24 21:58:27,642 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 21:58:27,937 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 21:58:27,938 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5648d8d2-1896-4eab-96c9-93dbf4ce9257/sv-benchmarks/c/pthread-wmm/safe029_tso.i [2023-11-24 21:58:27,973 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5648d8d2-1896-4eab-96c9-93dbf4ce9257/bin/uautomizer-verify-NlZe1sFDwI/data/53e1bf872/cb9afae5a4c9429a9229f304d23ec802/FLAG7d0cd4e5e [2023-11-24 21:58:27,991 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5648d8d2-1896-4eab-96c9-93dbf4ce9257/bin/uautomizer-verify-NlZe1sFDwI/data/53e1bf872/cb9afae5a4c9429a9229f304d23ec802 [2023-11-24 21:58:27,994 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 21:58:27,996 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 21:58:27,997 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 21:58:27,998 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 21:58:28,003 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 21:58:28,004 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:58:27" (1/1) ... [2023-11-24 21:58:28,006 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62acf80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:58:28, skipping insertion in model container [2023-11-24 21:58:28,006 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:58:27" (1/1) ... [2023-11-24 21:58:28,057 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 21:58:28,232 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_5648d8d2-1896-4eab-96c9-93dbf4ce9257/sv-benchmarks/c/pthread-wmm/safe029_tso.i[945,958] [2023-11-24 21:58:28,526 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:58:28,539 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 21:58:28,559 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_5648d8d2-1896-4eab-96c9-93dbf4ce9257/sv-benchmarks/c/pthread-wmm/safe029_tso.i[945,958] [2023-11-24 21:58:28,622 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:58:28,665 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 21:58:28,665 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 21:58:28,674 INFO L206 MainTranslator]: Completed translation [2023-11-24 21:58:28,674 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:58:28 WrapperNode [2023-11-24 21:58:28,675 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 21:58:28,677 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 21:58:28,677 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 21:58:28,677 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 21:58:28,707 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:58:28" (1/1) ... [2023-11-24 21:58:28,746 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:58:28" (1/1) ... [2023-11-24 21:58:28,775 INFO L138 Inliner]: procedures = 175, calls = 40, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 56 [2023-11-24 21:58:28,776 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 21:58:28,777 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 21:58:28,777 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 21:58:28,777 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 21:58:28,790 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:58:28" (1/1) ... [2023-11-24 21:58:28,791 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:58:28" (1/1) ... [2023-11-24 21:58:28,800 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:58:28" (1/1) ... [2023-11-24 21:58:28,829 INFO L175 MemorySlicer]: Split 4 memory accesses to 3 slices as follows [2, 1, 1]. 50 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 2 writes are split as follows [0, 1, 1]. [2023-11-24 21:58:28,829 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:58:28" (1/1) ... [2023-11-24 21:58:28,830 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:58:28" (1/1) ... [2023-11-24 21:58:28,842 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:58:28" (1/1) ... [2023-11-24 21:58:28,844 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:58:28" (1/1) ... [2023-11-24 21:58:28,851 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:58:28" (1/1) ... [2023-11-24 21:58:28,853 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:58:28" (1/1) ... [2023-11-24 21:58:28,859 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 21:58:28,862 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 21:58:28,863 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 21:58:28,863 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 21:58:28,864 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:58:28" (1/1) ... [2023-11-24 21:58:28,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:58:28,885 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5648d8d2-1896-4eab-96c9-93dbf4ce9257/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 21:58:28,912 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5648d8d2-1896-4eab-96c9-93dbf4ce9257/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-24 21:58:28,946 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5648d8d2-1896-4eab-96c9-93dbf4ce9257/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-24 21:58:28,957 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-24 21:58:28,957 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-24 21:58:28,957 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-24 21:58:28,958 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-24 21:58:28,958 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 21:58:28,959 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-24 21:58:28,960 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-24 21:58:28,960 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-24 21:58:28,960 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-24 21:58:28,960 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-24 21:58:28,960 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-24 21:58:28,961 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-24 21:58:28,961 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-24 21:58:28,961 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-24 21:58:28,962 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-24 21:58:28,962 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 21:58:28,962 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 21:58:28,964 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-24 21:58:29,182 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 21:58:29,187 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 21:58:29,353 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 21:58:29,455 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 21:58:29,455 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-24 21:58:29,456 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:58:29 BoogieIcfgContainer [2023-11-24 21:58:29,456 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 21:58:29,458 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 21:58:29,458 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 21:58:29,462 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 21:58:29,462 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 09:58:27" (1/3) ... [2023-11-24 21:58:29,463 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7480a758 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 09:58:29, skipping insertion in model container [2023-11-24 21:58:29,463 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:58:28" (2/3) ... [2023-11-24 21:58:29,464 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7480a758 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 09:58:29, skipping insertion in model container [2023-11-24 21:58:29,464 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:58:29" (3/3) ... [2023-11-24 21:58:29,482 INFO L112 eAbstractionObserver]: Analyzing ICFG safe029_tso.i [2023-11-24 21:58:29,492 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-24 21:58:29,504 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 21:58:29,504 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-24 21:58:29,504 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-24 21:58:29,557 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-24 21:58:29,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 35 places, 29 transitions, 66 flow [2023-11-24 21:58:29,625 INFO L124 PetriNetUnfolderBase]: 1/27 cut-off events. [2023-11-24 21:58:29,625 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-24 21:58:29,632 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34 conditions, 27 events. 1/27 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 34 event pairs, 0 based on Foata normal form. 0/25 useless extension candidates. Maximal degree in co-relation 27. Up to 2 conditions per place. [2023-11-24 21:58:29,632 INFO L82 GeneralOperation]: Start removeDead. Operand has 35 places, 29 transitions, 66 flow [2023-11-24 21:58:29,638 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 31 places, 24 transitions, 54 flow [2023-11-24 21:58:29,658 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 21:58:29,666 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;@1ad35fe6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 21:58:29,667 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-11-24 21:58:29,678 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-24 21:58:29,679 INFO L124 PetriNetUnfolderBase]: 0/23 cut-off events. [2023-11-24 21:58:29,679 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-24 21:58:29,679 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:58:29,680 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:58:29,680 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-24 21:58:29,686 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:58:29,690 INFO L85 PathProgramCache]: Analyzing trace with hash 596254971, now seen corresponding path program 1 times [2023-11-24 21:58:29,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:58:29,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858490281] [2023-11-24 21:58:29,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:58:29,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:58:29,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:58:30,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:58:30,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:58:30,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858490281] [2023-11-24 21:58:30,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858490281] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:58:30,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:58:30,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 21:58:30,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587744141] [2023-11-24 21:58:30,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:58:30,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 21:58:30,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:58:30,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 21:58:30,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-24 21:58:30,543 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 29 [2023-11-24 21:58:30,546 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 24 transitions, 54 flow. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:58:30,546 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:58:30,546 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 29 [2023-11-24 21:58:30,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:58:30,720 INFO L124 PetriNetUnfolderBase]: 78/215 cut-off events. [2023-11-24 21:58:30,720 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-24 21:58:30,723 INFO L83 FinitePrefix]: Finished finitePrefix Result has 381 conditions, 215 events. 78/215 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1084 event pairs, 32 based on Foata normal form. 9/215 useless extension candidates. Maximal degree in co-relation 371. Up to 115 conditions per place. [2023-11-24 21:58:30,726 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 16 selfloop transitions, 3 changer transitions 15/45 dead transitions. [2023-11-24 21:58:30,727 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 45 transitions, 167 flow [2023-11-24 21:58:30,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-24 21:58:30,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-24 21:58:30,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 127 transitions. [2023-11-24 21:58:30,750 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.625615763546798 [2023-11-24 21:58:30,751 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 127 transitions. [2023-11-24 21:58:30,751 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 127 transitions. [2023-11-24 21:58:30,752 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:58:30,755 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 127 transitions. [2023-11-24 21:58:30,758 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 18.142857142857142) internal successors, (127), 7 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:58:30,763 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 29.0) internal successors, (232), 8 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:58:30,763 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 29.0) internal successors, (232), 8 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:58:30,765 INFO L175 Difference]: Start difference. First operand has 31 places, 24 transitions, 54 flow. Second operand 7 states and 127 transitions. [2023-11-24 21:58:30,767 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 45 transitions, 167 flow [2023-11-24 21:58:30,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 45 transitions, 164 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 21:58:30,772 INFO L231 Difference]: Finished difference. Result has 40 places, 26 transitions, 87 flow [2023-11-24 21:58:30,775 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=87, PETRI_PLACES=40, PETRI_TRANSITIONS=26} [2023-11-24 21:58:30,779 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 9 predicate places. [2023-11-24 21:58:30,779 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 26 transitions, 87 flow [2023-11-24 21:58:30,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:58:30,780 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:58:30,780 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:58:30,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-24 21:58:30,781 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-24 21:58:30,781 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:58:30,782 INFO L85 PathProgramCache]: Analyzing trace with hash -1631936974, now seen corresponding path program 1 times [2023-11-24 21:58:30,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:58:30,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580875611] [2023-11-24 21:58:30,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:58:30,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:58:30,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:58:31,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:58:31,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:58:31,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580875611] [2023-11-24 21:58:31,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580875611] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:58:31,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:58:31,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 21:58:31,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737230357] [2023-11-24 21:58:31,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:58:31,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 21:58:31,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:58:31,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 21:58:31,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-24 21:58:31,112 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 29 [2023-11-24 21:58:31,115 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 26 transitions, 87 flow. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:58:31,115 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:58:31,115 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 29 [2023-11-24 21:58:31,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:58:31,463 INFO L124 PetriNetUnfolderBase]: 292/628 cut-off events. [2023-11-24 21:58:31,464 INFO L125 PetriNetUnfolderBase]: For 395/395 co-relation queries the response was YES. [2023-11-24 21:58:31,468 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1536 conditions, 628 events. 292/628 cut-off events. For 395/395 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 3554 event pairs, 51 based on Foata normal form. 32/657 useless extension candidates. Maximal degree in co-relation 1521. Up to 201 conditions per place. [2023-11-24 21:58:31,472 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 24 selfloop transitions, 5 changer transitions 29/69 dead transitions. [2023-11-24 21:58:31,473 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 69 transitions, 315 flow [2023-11-24 21:58:31,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-24 21:58:31,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-24 21:58:31,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 171 transitions. [2023-11-24 21:58:31,476 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5896551724137931 [2023-11-24 21:58:31,476 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 171 transitions. [2023-11-24 21:58:31,476 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 171 transitions. [2023-11-24 21:58:31,477 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:58:31,477 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 171 transitions. [2023-11-24 21:58:31,479 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 17.1) internal successors, (171), 10 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:58:31,480 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 29.0) internal successors, (319), 11 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) [2023-11-24 21:58:31,481 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 29.0) internal successors, (319), 11 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) [2023-11-24 21:58:31,481 INFO L175 Difference]: Start difference. First operand has 40 places, 26 transitions, 87 flow. Second operand 10 states and 171 transitions. [2023-11-24 21:58:31,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 69 transitions, 315 flow [2023-11-24 21:58:31,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 69 transitions, 298 flow, removed 7 selfloop flow, removed 3 redundant places. [2023-11-24 21:58:31,489 INFO L231 Difference]: Finished difference. Result has 50 places, 28 transitions, 116 flow [2023-11-24 21:58:31,489 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=116, PETRI_PLACES=50, PETRI_TRANSITIONS=28} [2023-11-24 21:58:31,490 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 19 predicate places. [2023-11-24 21:58:31,491 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 28 transitions, 116 flow [2023-11-24 21:58:31,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:58:31,491 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:58:31,491 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:58:31,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-24 21:58:31,492 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-24 21:58:31,492 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:58:31,493 INFO L85 PathProgramCache]: Analyzing trace with hash 1838085242, now seen corresponding path program 1 times [2023-11-24 21:58:31,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:58:31,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77116770] [2023-11-24 21:58:31,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:58:31,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:58:31,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:58:31,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:58:31,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:58:31,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77116770] [2023-11-24 21:58:31,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77116770] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:58:31,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:58:31,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 21:58:31,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127787312] [2023-11-24 21:58:31,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:58:31,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 21:58:31,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:58:31,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 21:58:31,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-24 21:58:31,734 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 29 [2023-11-24 21:58:31,734 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 28 transitions, 116 flow. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:58:31,734 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:58:31,734 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 29 [2023-11-24 21:58:31,735 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:58:31,921 INFO L124 PetriNetUnfolderBase]: 123/379 cut-off events. [2023-11-24 21:58:31,921 INFO L125 PetriNetUnfolderBase]: For 651/653 co-relation queries the response was YES. [2023-11-24 21:58:31,923 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1012 conditions, 379 events. 123/379 cut-off events. For 651/653 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2485 event pairs, 23 based on Foata normal form. 14/372 useless extension candidates. Maximal degree in co-relation 990. Up to 122 conditions per place. [2023-11-24 21:58:31,926 INFO L140 encePairwiseOnDemand]: 24/29 looper letters, 20 selfloop transitions, 3 changer transitions 13/49 dead transitions. [2023-11-24 21:58:31,927 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 49 transitions, 282 flow [2023-11-24 21:58:31,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-24 21:58:31,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-24 21:58:31,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 128 transitions. [2023-11-24 21:58:31,931 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6305418719211823 [2023-11-24 21:58:31,931 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 128 transitions. [2023-11-24 21:58:31,931 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 128 transitions. [2023-11-24 21:58:31,932 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:58:31,932 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 128 transitions. [2023-11-24 21:58:31,934 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 18.285714285714285) internal successors, (128), 7 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:58:31,936 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 29.0) internal successors, (232), 8 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:58:31,936 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 29.0) internal successors, (232), 8 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:58:31,936 INFO L175 Difference]: Start difference. First operand has 50 places, 28 transitions, 116 flow. Second operand 7 states and 128 transitions. [2023-11-24 21:58:31,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 49 transitions, 282 flow [2023-11-24 21:58:31,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 49 transitions, 240 flow, removed 21 selfloop flow, removed 6 redundant places. [2023-11-24 21:58:31,947 INFO L231 Difference]: Finished difference. Result has 49 places, 28 transitions, 121 flow [2023-11-24 21:58:31,947 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=121, PETRI_PLACES=49, PETRI_TRANSITIONS=28} [2023-11-24 21:58:31,949 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 18 predicate places. [2023-11-24 21:58:31,949 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 28 transitions, 121 flow [2023-11-24 21:58:31,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:58:31,949 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:58:31,949 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:58:31,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-24 21:58:31,950 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-24 21:58:31,951 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:58:31,951 INFO L85 PathProgramCache]: Analyzing trace with hash 1890608637, now seen corresponding path program 1 times [2023-11-24 21:58:31,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:58:31,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813121772] [2023-11-24 21:58:31,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:58:31,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:58:31,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:58:32,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:58:32,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:58:32,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813121772] [2023-11-24 21:58:32,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813121772] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:58:32,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:58:32,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 21:58:32,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664005150] [2023-11-24 21:58:32,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:58:32,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 21:58:32,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:58:32,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 21:58:32,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 21:58:32,090 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 29 [2023-11-24 21:58:32,091 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 28 transitions, 121 flow. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:58:32,091 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:58:32,091 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 29 [2023-11-24 21:58:32,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:58:32,194 INFO L124 PetriNetUnfolderBase]: 147/381 cut-off events. [2023-11-24 21:58:32,194 INFO L125 PetriNetUnfolderBase]: For 249/253 co-relation queries the response was YES. [2023-11-24 21:58:32,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 849 conditions, 381 events. 147/381 cut-off events. For 249/253 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2107 event pairs, 30 based on Foata normal form. 25/385 useless extension candidates. Maximal degree in co-relation 827. Up to 150 conditions per place. [2023-11-24 21:58:32,197 INFO L140 encePairwiseOnDemand]: 24/29 looper letters, 15 selfloop transitions, 4 changer transitions 3/38 dead transitions. [2023-11-24 21:58:32,197 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 38 transitions, 187 flow [2023-11-24 21:58:32,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 21:58:32,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-24 21:58:32,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 84 transitions. [2023-11-24 21:58:32,199 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7241379310344828 [2023-11-24 21:58:32,199 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 84 transitions. [2023-11-24 21:58:32,199 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 84 transitions. [2023-11-24 21:58:32,200 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:58:32,200 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 84 transitions. [2023-11-24 21:58:32,200 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:58:32,201 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 29.0) internal successors, (145), 5 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:58:32,201 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 29.0) internal successors, (145), 5 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:58:32,201 INFO L175 Difference]: Start difference. First operand has 49 places, 28 transitions, 121 flow. Second operand 4 states and 84 transitions. [2023-11-24 21:58:32,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 38 transitions, 187 flow [2023-11-24 21:58:32,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 38 transitions, 167 flow, removed 7 selfloop flow, removed 6 redundant places. [2023-11-24 21:58:32,205 INFO L231 Difference]: Finished difference. Result has 44 places, 30 transitions, 127 flow [2023-11-24 21:58:32,206 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=101, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=127, PETRI_PLACES=44, PETRI_TRANSITIONS=30} [2023-11-24 21:58:32,206 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 13 predicate places. [2023-11-24 21:58:32,207 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 30 transitions, 127 flow [2023-11-24 21:58:32,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:58:32,207 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:58:32,207 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:58:32,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-24 21:58:32,208 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-24 21:58:32,208 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:58:32,208 INFO L85 PathProgramCache]: Analyzing trace with hash -1213351634, now seen corresponding path program 1 times [2023-11-24 21:58:32,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:58:32,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520361847] [2023-11-24 21:58:32,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:58:32,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:58:32,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:58:32,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:58:32,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:58:32,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520361847] [2023-11-24 21:58:32,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520361847] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:58:32,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:58:32,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 21:58:32,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123031574] [2023-11-24 21:58:32,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:58:32,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 21:58:32,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:58:32,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 21:58:32,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-24 21:58:32,346 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 29 [2023-11-24 21:58:32,346 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 30 transitions, 127 flow. Second operand has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:58:32,346 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:58:32,346 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 29 [2023-11-24 21:58:32,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:58:32,429 INFO L124 PetriNetUnfolderBase]: 94/229 cut-off events. [2023-11-24 21:58:32,429 INFO L125 PetriNetUnfolderBase]: For 129/160 co-relation queries the response was YES. [2023-11-24 21:58:32,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 604 conditions, 229 events. 94/229 cut-off events. For 129/160 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1006 event pairs, 6 based on Foata normal form. 28/243 useless extension candidates. Maximal degree in co-relation 584. Up to 84 conditions per place. [2023-11-24 21:58:32,431 INFO L140 encePairwiseOnDemand]: 24/29 looper letters, 0 selfloop transitions, 0 changer transitions 35/35 dead transitions. [2023-11-24 21:58:32,431 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 35 transitions, 176 flow [2023-11-24 21:58:32,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-24 21:58:32,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-24 21:58:32,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 99 transitions. [2023-11-24 21:58:32,432 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6827586206896552 [2023-11-24 21:58:32,433 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 99 transitions. [2023-11-24 21:58:32,433 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 99 transitions. [2023-11-24 21:58:32,433 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:58:32,433 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 99 transitions. [2023-11-24 21:58:32,434 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:58:32,434 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 29.0) internal successors, (174), 6 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:58:32,435 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 29.0) internal successors, (174), 6 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:58:32,435 INFO L175 Difference]: Start difference. First operand has 44 places, 30 transitions, 127 flow. Second operand 5 states and 99 transitions. [2023-11-24 21:58:32,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 35 transitions, 176 flow [2023-11-24 21:58:32,436 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 35 transitions, 157 flow, removed 3 selfloop flow, removed 6 redundant places. [2023-11-24 21:58:32,437 INFO L231 Difference]: Finished difference. Result has 38 places, 0 transitions, 0 flow [2023-11-24 21:58:32,437 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=38, PETRI_TRANSITIONS=0} [2023-11-24 21:58:32,438 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 7 predicate places. [2023-11-24 21:58:32,438 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 0 transitions, 0 flow [2023-11-24 21:58:32,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:58:32,441 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-11-24 21:58:32,441 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-11-24 21:58:32,441 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-11-24 21:58:32,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-24 21:58:32,442 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-11-24 21:58:32,446 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-24 21:58:32,446 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-24 21:58:32,451 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.11 09:58:32 BasicIcfg [2023-11-24 21:58:32,451 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-24 21:58:32,452 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-24 21:58:32,452 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-24 21:58:32,452 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-24 21:58:32,453 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:58:29" (3/4) ... [2023-11-24 21:58:32,455 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-24 21:58:32,458 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2023-11-24 21:58:32,458 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2023-11-24 21:58:32,463 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 29 nodes and edges [2023-11-24 21:58:32,463 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2023-11-24 21:58:32,463 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-24 21:58:32,464 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-24 21:58:32,549 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5648d8d2-1896-4eab-96c9-93dbf4ce9257/bin/uautomizer-verify-NlZe1sFDwI/witness.graphml [2023-11-24 21:58:32,549 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5648d8d2-1896-4eab-96c9-93dbf4ce9257/bin/uautomizer-verify-NlZe1sFDwI/witness.yml [2023-11-24 21:58:32,550 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-24 21:58:32,550 INFO L158 Benchmark]: Toolchain (without parser) took 4554.46ms. Allocated memory was 136.3MB in the beginning and 176.2MB in the end (delta: 39.8MB). Free memory was 91.9MB in the beginning and 88.8MB in the end (delta: 3.1MB). Peak memory consumption was 43.4MB. Max. memory is 16.1GB. [2023-11-24 21:58:32,551 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 136.3MB. Free memory was 111.3MB in the beginning and 111.3MB in the end (delta: 24.5kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 21:58:32,551 INFO L158 Benchmark]: CACSL2BoogieTranslator took 678.30ms. Allocated memory is still 136.3MB. Free memory was 91.5MB in the beginning and 71.3MB in the end (delta: 20.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-24 21:58:32,552 INFO L158 Benchmark]: Boogie Procedure Inliner took 99.46ms. Allocated memory is still 136.3MB. Free memory was 71.3MB in the beginning and 104.0MB in the end (delta: -32.7MB). Peak memory consumption was 6.5MB. Max. memory is 16.1GB. [2023-11-24 21:58:32,552 INFO L158 Benchmark]: Boogie Preprocessor took 84.94ms. Allocated memory is still 136.3MB. Free memory was 104.0MB in the beginning and 101.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-24 21:58:32,552 INFO L158 Benchmark]: RCFGBuilder took 593.39ms. Allocated memory is still 136.3MB. Free memory was 101.9MB in the beginning and 83.7MB in the end (delta: 18.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-24 21:58:32,553 INFO L158 Benchmark]: TraceAbstraction took 2993.48ms. Allocated memory was 136.3MB in the beginning and 176.2MB in the end (delta: 39.8MB). Free memory was 82.4MB in the beginning and 93.0MB in the end (delta: -10.6MB). Peak memory consumption was 28.5MB. Max. memory is 16.1GB. [2023-11-24 21:58:32,553 INFO L158 Benchmark]: Witness Printer took 97.52ms. Allocated memory is still 176.2MB. Free memory was 93.0MB in the beginning and 88.8MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-24 21:58:32,556 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 136.3MB. Free memory was 111.3MB in the beginning and 111.3MB in the end (delta: 24.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 678.30ms. Allocated memory is still 136.3MB. Free memory was 91.5MB in the beginning and 71.3MB in the end (delta: 20.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 99.46ms. Allocated memory is still 136.3MB. Free memory was 71.3MB in the beginning and 104.0MB in the end (delta: -32.7MB). Peak memory consumption was 6.5MB. Max. memory is 16.1GB. * Boogie Preprocessor took 84.94ms. Allocated memory is still 136.3MB. Free memory was 104.0MB in the beginning and 101.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 593.39ms. Allocated memory is still 136.3MB. Free memory was 101.9MB in the beginning and 83.7MB in the end (delta: 18.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 2993.48ms. Allocated memory was 136.3MB in the beginning and 176.2MB in the end (delta: 39.8MB). Free memory was 82.4MB in the beginning and 93.0MB in the end (delta: -10.6MB). Peak memory consumption was 28.5MB. Max. memory is 16.1GB. * Witness Printer took 97.52ms. Allocated memory is still 176.2MB. Free memory was 93.0MB in the beginning and 88.8MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 45 locations, 3 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: 2.9s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 132 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 118 mSDsluCounter, 76 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 58 mSDsCounter, 8 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 303 IncrementalHoareTripleChecker+Invalid, 311 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 8 mSolverCounterUnsat, 18 mSDtfsCounter, 303 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 35 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=127occurred in iteration=4, InterpolantAutomatonStates: 33, 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, 0.1s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 76 NumberOfCodeBlocks, 76 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 71 ConstructedInterpolants, 0 QuantifiedInterpolants, 231 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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! [2023-11-24 21:58:32,576 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5648d8d2-1896-4eab-96c9-93dbf4ce9257/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE