./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-mult-equiv.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4fc63b2a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f0c682-7619-4c06-9156-d7a249ca18d7/bin/uautomizer-verify-4GaUIPS5ZU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f0c682-7619-4c06-9156-d7a249ca18d7/bin/uautomizer-verify-4GaUIPS5ZU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f0c682-7619-4c06-9156-d7a249ca18d7/bin/uautomizer-verify-4GaUIPS5ZU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f0c682-7619-4c06-9156-d7a249ca18d7/bin/uautomizer-verify-4GaUIPS5ZU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-mult-equiv.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f0c682-7619-4c06-9156-d7a249ca18d7/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f0c682-7619-4c06-9156-d7a249ca18d7/bin/uautomizer-verify-4GaUIPS5ZU --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 2aa715856437bb3403b6a2717a4123b124cdc9b291b63ee677b7c1993b3be7b6 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-10-31 21:58:06,672 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 21:58:06,777 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f0c682-7619-4c06-9156-d7a249ca18d7/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-31 21:58:06,785 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-31 21:58:06,786 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-31 21:58:06,821 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 21:58:06,822 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-31 21:58:06,823 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-31 21:58:06,823 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-31 21:58:06,824 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-31 21:58:06,825 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-31 21:58:06,825 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-31 21:58:06,826 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 21:58:06,827 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 21:58:06,827 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 21:58:06,828 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 21:58:06,828 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-31 21:58:06,829 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-31 21:58:06,829 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-31 21:58:06,830 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-31 21:58:06,830 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 21:58:06,831 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-31 21:58:06,831 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-31 21:58:06,832 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-31 21:58:06,832 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 21:58:06,833 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-31 21:58:06,833 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-31 21:58:06,834 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 21:58:06,835 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 21:58:06,835 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 21:58:06,835 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-31 21:58:06,836 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-31 21:58:06,836 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 21:58:06,837 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 21:58:06,837 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-31 21:58:06,838 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-31 21:58:06,838 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-31 21:58:06,839 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-31 21:58:06,839 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-31 21:58:06,840 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-31 21:58:06,840 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-31 21:58:06,841 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-31 21:58:06,841 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_f4f0c682-7619-4c06-9156-d7a249ca18d7/bin/uautomizer-verify-4GaUIPS5ZU/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f0c682-7619-4c06-9156-d7a249ca18d7/bin/uautomizer-verify-4GaUIPS5ZU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2aa715856437bb3403b6a2717a4123b124cdc9b291b63ee677b7c1993b3be7b6 [2024-10-31 21:58:07,194 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 21:58:07,224 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 21:58:07,228 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 21:58:07,231 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 21:58:07,232 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 21:58:07,234 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f0c682-7619-4c06-9156-d7a249ca18d7/bin/uautomizer-verify-4GaUIPS5ZU/../../sv-benchmarks/c/weaver/popl20-mult-equiv.wvr.c Unable to find full path for "g++" [2024-10-31 21:58:09,475 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 21:58:09,703 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 21:58:09,704 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f0c682-7619-4c06-9156-d7a249ca18d7/sv-benchmarks/c/weaver/popl20-mult-equiv.wvr.c [2024-10-31 21:58:09,712 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f0c682-7619-4c06-9156-d7a249ca18d7/bin/uautomizer-verify-4GaUIPS5ZU/data/c36f1a07a/e484dc849d284fd2a6fdc84d678ce82a/FLAG65a964364 [2024-10-31 21:58:09,731 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f0c682-7619-4c06-9156-d7a249ca18d7/bin/uautomizer-verify-4GaUIPS5ZU/data/c36f1a07a/e484dc849d284fd2a6fdc84d678ce82a [2024-10-31 21:58:09,733 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 21:58:09,735 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-31 21:58:09,736 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 21:58:09,736 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 21:58:09,741 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 21:58:09,742 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 09:58:09" (1/1) ... [2024-10-31 21:58:09,743 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f371a06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:58:09, skipping insertion in model container [2024-10-31 21:58:09,744 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 09:58:09" (1/1) ... [2024-10-31 21:58:09,765 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 21:58:10,001 WARN L251 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_f4f0c682-7619-4c06-9156-d7a249ca18d7/sv-benchmarks/c/weaver/popl20-mult-equiv.wvr.c[2630,2643] [2024-10-31 21:58:10,006 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 21:58:10,014 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 21:58:10,036 WARN L251 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_f4f0c682-7619-4c06-9156-d7a249ca18d7/sv-benchmarks/c/weaver/popl20-mult-equiv.wvr.c[2630,2643] [2024-10-31 21:58:10,037 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 21:58:10,056 INFO L204 MainTranslator]: Completed translation [2024-10-31 21:58:10,056 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:58:10 WrapperNode [2024-10-31 21:58:10,056 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 21:58:10,057 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 21:58:10,058 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 21:58:10,058 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 21:58:10,066 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:58:10" (1/1) ... [2024-10-31 21:58:10,073 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:58:10" (1/1) ... [2024-10-31 21:58:10,089 INFO L138 Inliner]: procedures = 21, calls = 24, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 51 [2024-10-31 21:58:10,090 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 21:58:10,090 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 21:58:10,091 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 21:58:10,091 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 21:58:10,103 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:58:10" (1/1) ... [2024-10-31 21:58:10,103 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:58:10" (1/1) ... [2024-10-31 21:58:10,106 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:58:10" (1/1) ... [2024-10-31 21:58:10,121 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-31 21:58:10,121 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:58:10" (1/1) ... [2024-10-31 21:58:10,121 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:58:10" (1/1) ... [2024-10-31 21:58:10,125 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:58:10" (1/1) ... [2024-10-31 21:58:10,129 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:58:10" (1/1) ... [2024-10-31 21:58:10,134 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:58:10" (1/1) ... [2024-10-31 21:58:10,135 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:58:10" (1/1) ... [2024-10-31 21:58:10,138 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 21:58:10,139 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 21:58:10,139 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 21:58:10,139 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 21:58:10,140 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:58:10" (1/1) ... [2024-10-31 21:58:10,146 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 21:58:10,159 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f0c682-7619-4c06-9156-d7a249ca18d7/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:58:10,173 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f0c682-7619-4c06-9156-d7a249ca18d7/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-31 21:58:10,175 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f0c682-7619-4c06-9156-d7a249ca18d7/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-31 21:58:10,206 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-31 21:58:10,206 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-31 21:58:10,206 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-31 21:58:10,206 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-31 21:58:10,207 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-31 21:58:10,207 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-31 21:58:10,207 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-31 21:58:10,207 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-31 21:58:10,207 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-31 21:58:10,207 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-31 21:58:10,208 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 21:58:10,208 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 21:58:10,209 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-31 21:58:10,304 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 21:58:10,306 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 21:58:10,575 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-31 21:58:10,575 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 21:58:10,808 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 21:58:10,809 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-10-31 21:58:10,809 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 09:58:10 BoogieIcfgContainer [2024-10-31 21:58:10,809 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 21:58:10,816 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-31 21:58:10,816 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-31 21:58:10,821 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-31 21:58:10,822 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.10 09:58:09" (1/3) ... [2024-10-31 21:58:10,824 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6df30e0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 09:58:10, skipping insertion in model container [2024-10-31 21:58:10,824 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:58:10" (2/3) ... [2024-10-31 21:58:10,824 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6df30e0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 09:58:10, skipping insertion in model container [2024-10-31 21:58:10,824 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 09:58:10" (3/3) ... [2024-10-31 21:58:10,830 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-mult-equiv.wvr.c [2024-10-31 21:58:10,850 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-31 21:58:10,851 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-31 21:58:10,851 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-31 21:58:10,935 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-10-31 21:58:10,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 39 places, 32 transitions, 85 flow [2024-10-31 21:58:11,034 INFO L124 PetriNetUnfolderBase]: 3/29 cut-off events. [2024-10-31 21:58:11,035 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-31 21:58:11,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42 conditions, 29 events. 3/29 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 44 event pairs, 0 based on Foata normal form. 0/25 useless extension candidates. Maximal degree in co-relation 25. Up to 2 conditions per place. [2024-10-31 21:58:11,039 INFO L82 GeneralOperation]: Start removeDead. Operand has 39 places, 32 transitions, 85 flow [2024-10-31 21:58:11,047 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 35 places, 28 transitions, 74 flow [2024-10-31 21:58:11,059 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 21:58:11,067 INFO L333 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, 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;@130991b7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 21:58:11,068 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-10-31 21:58:11,084 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-31 21:58:11,085 INFO L124 PetriNetUnfolderBase]: 3/27 cut-off events. [2024-10-31 21:58:11,085 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-31 21:58:11,085 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 21:58:11,086 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:58:11,087 INFO L396 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)] === [2024-10-31 21:58:11,093 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:58:11,094 INFO L85 PathProgramCache]: Analyzing trace with hash 1857037086, now seen corresponding path program 1 times [2024-10-31 21:58:11,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:58:11,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414173239] [2024-10-31 21:58:11,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:58:11,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:58:11,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:11,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:58:11,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:58:11,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414173239] [2024-10-31 21:58:11,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414173239] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:58:11,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:58:11,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 21:58:11,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066755127] [2024-10-31 21:58:11,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:58:11,890 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 21:58:11,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:58:11,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 21:58:11,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 21:58:11,939 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 32 [2024-10-31 21:58:11,942 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 28 transitions, 74 flow. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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) [2024-10-31 21:58:11,942 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 21:58:11,942 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 32 [2024-10-31 21:58:11,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 21:58:12,251 INFO L124 PetriNetUnfolderBase]: 321/552 cut-off events. [2024-10-31 21:58:12,253 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2024-10-31 21:58:12,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1054 conditions, 552 events. 321/552 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2475 event pairs, 34 based on Foata normal form. 1/536 useless extension candidates. Maximal degree in co-relation 896. Up to 376 conditions per place. [2024-10-31 21:58:12,269 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 26 selfloop transitions, 4 changer transitions 1/42 dead transitions. [2024-10-31 21:58:12,270 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 42 transitions, 179 flow [2024-10-31 21:58:12,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 21:58:12,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 21:58:12,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 74 transitions. [2024-10-31 21:58:12,288 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7708333333333334 [2024-10-31 21:58:12,290 INFO L175 Difference]: Start difference. First operand has 35 places, 28 transitions, 74 flow. Second operand 3 states and 74 transitions. [2024-10-31 21:58:12,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 42 transitions, 179 flow [2024-10-31 21:58:12,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 42 transitions, 157 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-10-31 21:58:12,299 INFO L231 Difference]: Finished difference. Result has 32 places, 31 transitions, 88 flow [2024-10-31 21:58:12,302 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=88, PETRI_PLACES=32, PETRI_TRANSITIONS=31} [2024-10-31 21:58:12,307 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, -3 predicate places. [2024-10-31 21:58:12,310 INFO L471 AbstractCegarLoop]: Abstraction has has 32 places, 31 transitions, 88 flow [2024-10-31 21:58:12,310 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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) [2024-10-31 21:58:12,311 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 21:58:12,311 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:58:12,311 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-31 21:58:12,312 INFO L396 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)] === [2024-10-31 21:58:12,313 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:58:12,314 INFO L85 PathProgramCache]: Analyzing trace with hash 345968512, now seen corresponding path program 1 times [2024-10-31 21:58:12,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:58:12,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777798908] [2024-10-31 21:58:12,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:58:12,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:58:12,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:12,694 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:58:12,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:58:12,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777798908] [2024-10-31 21:58:12,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777798908] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:58:12,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:58:12,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 21:58:12,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280771177] [2024-10-31 21:58:12,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:58:12,700 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 21:58:12,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:58:12,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 21:58:12,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-10-31 21:58:12,753 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2024-10-31 21:58:12,754 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 31 transitions, 88 flow. Second operand has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 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) [2024-10-31 21:58:12,754 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 21:58:12,754 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2024-10-31 21:58:12,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 21:58:13,178 INFO L124 PetriNetUnfolderBase]: 577/914 cut-off events. [2024-10-31 21:58:13,179 INFO L125 PetriNetUnfolderBase]: For 198/221 co-relation queries the response was YES. [2024-10-31 21:58:13,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2076 conditions, 914 events. 577/914 cut-off events. For 198/221 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 4362 event pairs, 20 based on Foata normal form. 0/822 useless extension candidates. Maximal degree in co-relation 619. Up to 436 conditions per place. [2024-10-31 21:58:13,192 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 62 selfloop transitions, 14 changer transitions 0/84 dead transitions. [2024-10-31 21:58:13,193 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 84 transitions, 389 flow [2024-10-31 21:58:13,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-31 21:58:13,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-31 21:58:13,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 150 transitions. [2024-10-31 21:58:13,197 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6696428571428571 [2024-10-31 21:58:13,198 INFO L175 Difference]: Start difference. First operand has 32 places, 31 transitions, 88 flow. Second operand 7 states and 150 transitions. [2024-10-31 21:58:13,198 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 84 transitions, 389 flow [2024-10-31 21:58:13,200 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 84 transitions, 379 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-31 21:58:13,204 INFO L231 Difference]: Finished difference. Result has 41 places, 43 transitions, 184 flow [2024-10-31 21:58:13,205 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=184, PETRI_PLACES=41, PETRI_TRANSITIONS=43} [2024-10-31 21:58:13,206 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 6 predicate places. [2024-10-31 21:58:13,206 INFO L471 AbstractCegarLoop]: Abstraction has has 41 places, 43 transitions, 184 flow [2024-10-31 21:58:13,207 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 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) [2024-10-31 21:58:13,207 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 21:58:13,207 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:58:13,208 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-31 21:58:13,208 INFO L396 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)] === [2024-10-31 21:58:13,210 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:58:13,210 INFO L85 PathProgramCache]: Analyzing trace with hash 160537772, now seen corresponding path program 2 times [2024-10-31 21:58:13,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:58:13,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408652169] [2024-10-31 21:58:13,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:58:13,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:58:13,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:13,596 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:58:13,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:58:13,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408652169] [2024-10-31 21:58:13,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408652169] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:58:13,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:58:13,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 21:58:13,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654557961] [2024-10-31 21:58:13,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:58:13,601 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 21:58:13,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:58:13,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 21:58:13,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-31 21:58:13,649 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2024-10-31 21:58:13,650 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 43 transitions, 184 flow. Second operand has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 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) [2024-10-31 21:58:13,650 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 21:58:13,651 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2024-10-31 21:58:13,651 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 21:58:14,048 INFO L124 PetriNetUnfolderBase]: 698/1103 cut-off events. [2024-10-31 21:58:14,048 INFO L125 PetriNetUnfolderBase]: For 734/804 co-relation queries the response was YES. [2024-10-31 21:58:14,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2981 conditions, 1103 events. 698/1103 cut-off events. For 734/804 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 5450 event pairs, 78 based on Foata normal form. 31/1088 useless extension candidates. Maximal degree in co-relation 2785. Up to 713 conditions per place. [2024-10-31 21:58:14,060 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 55 selfloop transitions, 21 changer transitions 2/86 dead transitions. [2024-10-31 21:58:14,060 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 86 transitions, 511 flow [2024-10-31 21:58:14,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-31 21:58:14,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-31 21:58:14,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 144 transitions. [2024-10-31 21:58:14,063 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6428571428571429 [2024-10-31 21:58:14,064 INFO L175 Difference]: Start difference. First operand has 41 places, 43 transitions, 184 flow. Second operand 7 states and 144 transitions. [2024-10-31 21:58:14,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 86 transitions, 511 flow [2024-10-31 21:58:14,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 86 transitions, 511 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-31 21:58:14,071 INFO L231 Difference]: Finished difference. Result has 52 places, 55 transitions, 340 flow [2024-10-31 21:58:14,071 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=340, PETRI_PLACES=52, PETRI_TRANSITIONS=55} [2024-10-31 21:58:14,074 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 17 predicate places. [2024-10-31 21:58:14,074 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 55 transitions, 340 flow [2024-10-31 21:58:14,075 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 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) [2024-10-31 21:58:14,075 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 21:58:14,075 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:58:14,075 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-31 21:58:14,076 INFO L396 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)] === [2024-10-31 21:58:14,077 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:58:14,077 INFO L85 PathProgramCache]: Analyzing trace with hash -1462173970, now seen corresponding path program 3 times [2024-10-31 21:58:14,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:58:14,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903598812] [2024-10-31 21:58:14,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:58:14,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:58:14,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:14,462 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:58:14,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:58:14,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903598812] [2024-10-31 21:58:14,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903598812] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:58:14,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:58:14,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 21:58:14,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508469235] [2024-10-31 21:58:14,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:58:14,464 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 21:58:14,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:58:14,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 21:58:14,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-31 21:58:14,527 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 32 [2024-10-31 21:58:14,528 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 55 transitions, 340 flow. Second operand has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 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) [2024-10-31 21:58:14,528 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 21:58:14,528 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 32 [2024-10-31 21:58:14,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 21:58:15,148 INFO L124 PetriNetUnfolderBase]: 1472/2215 cut-off events. [2024-10-31 21:58:15,149 INFO L125 PetriNetUnfolderBase]: For 2673/2751 co-relation queries the response was YES. [2024-10-31 21:58:15,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6970 conditions, 2215 events. 1472/2215 cut-off events. For 2673/2751 co-relation queries the response was YES. Maximal size of possible extension queue 225. Compared 11761 event pairs, 120 based on Foata normal form. 37/2204 useless extension candidates. Maximal degree in co-relation 5295. Up to 915 conditions per place. [2024-10-31 21:58:15,175 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 88 selfloop transitions, 38 changer transitions 2/135 dead transitions. [2024-10-31 21:58:15,176 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 135 transitions, 922 flow [2024-10-31 21:58:15,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-31 21:58:15,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-31 21:58:15,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 198 transitions. [2024-10-31 21:58:15,179 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6875 [2024-10-31 21:58:15,179 INFO L175 Difference]: Start difference. First operand has 52 places, 55 transitions, 340 flow. Second operand 9 states and 198 transitions. [2024-10-31 21:58:15,179 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 135 transitions, 922 flow [2024-10-31 21:58:15,200 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 135 transitions, 878 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-10-31 21:58:15,204 INFO L231 Difference]: Finished difference. Result has 64 places, 72 transitions, 584 flow [2024-10-31 21:58:15,204 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=584, PETRI_PLACES=64, PETRI_TRANSITIONS=72} [2024-10-31 21:58:15,205 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 29 predicate places. [2024-10-31 21:58:15,205 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 72 transitions, 584 flow [2024-10-31 21:58:15,206 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 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) [2024-10-31 21:58:15,206 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 21:58:15,206 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:58:15,208 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-31 21:58:15,209 INFO L396 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)] === [2024-10-31 21:58:15,211 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:58:15,211 INFO L85 PathProgramCache]: Analyzing trace with hash -1153795878, now seen corresponding path program 4 times [2024-10-31 21:58:15,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:58:15,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797389014] [2024-10-31 21:58:15,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:58:15,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:58:15,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:15,468 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:58:15,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:58:15,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797389014] [2024-10-31 21:58:15,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797389014] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:58:15,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:58:15,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-31 21:58:15,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594441440] [2024-10-31 21:58:15,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:58:15,471 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 21:58:15,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:58:15,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 21:58:15,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-31 21:58:15,510 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2024-10-31 21:58:15,511 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 72 transitions, 584 flow. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 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) [2024-10-31 21:58:15,511 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 21:58:15,511 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2024-10-31 21:58:15,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 21:58:15,986 INFO L124 PetriNetUnfolderBase]: 1361/2148 cut-off events. [2024-10-31 21:58:15,986 INFO L125 PetriNetUnfolderBase]: For 6235/6379 co-relation queries the response was YES. [2024-10-31 21:58:15,995 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8276 conditions, 2148 events. 1361/2148 cut-off events. For 6235/6379 co-relation queries the response was YES. Maximal size of possible extension queue 221. Compared 12175 event pairs, 141 based on Foata normal form. 38/2128 useless extension candidates. Maximal degree in co-relation 6477. Up to 1240 conditions per place. [2024-10-31 21:58:16,011 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 65 selfloop transitions, 34 changer transitions 2/110 dead transitions. [2024-10-31 21:58:16,012 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 110 transitions, 993 flow [2024-10-31 21:58:16,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-31 21:58:16,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-31 21:58:16,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 126 transitions. [2024-10-31 21:58:16,014 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.65625 [2024-10-31 21:58:16,014 INFO L175 Difference]: Start difference. First operand has 64 places, 72 transitions, 584 flow. Second operand 6 states and 126 transitions. [2024-10-31 21:58:16,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 110 transitions, 993 flow [2024-10-31 21:58:16,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 110 transitions, 972 flow, removed 7 selfloop flow, removed 1 redundant places. [2024-10-31 21:58:16,084 INFO L231 Difference]: Finished difference. Result has 71 places, 79 transitions, 742 flow [2024-10-31 21:58:16,084 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=565, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=742, PETRI_PLACES=71, PETRI_TRANSITIONS=79} [2024-10-31 21:58:16,087 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 36 predicate places. [2024-10-31 21:58:16,088 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 79 transitions, 742 flow [2024-10-31 21:58:16,088 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 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) [2024-10-31 21:58:16,089 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 21:58:16,089 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:58:16,089 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-31 21:58:16,089 INFO L396 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)] === [2024-10-31 21:58:16,090 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:58:16,090 INFO L85 PathProgramCache]: Analyzing trace with hash 973411842, now seen corresponding path program 1 times [2024-10-31 21:58:16,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:58:16,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313876489] [2024-10-31 21:58:16,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:58:16,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:58:16,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:16,416 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:58:16,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:58:16,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313876489] [2024-10-31 21:58:16,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313876489] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:58:16,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:58:16,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 21:58:16,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083744981] [2024-10-31 21:58:16,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:58:16,422 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 21:58:16,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:58:16,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 21:58:16,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-10-31 21:58:16,459 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 32 [2024-10-31 21:58:16,460 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 79 transitions, 742 flow. Second operand has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 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) [2024-10-31 21:58:16,460 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 21:58:16,460 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 32 [2024-10-31 21:58:16,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 21:58:17,168 INFO L124 PetriNetUnfolderBase]: 1771/2729 cut-off events. [2024-10-31 21:58:17,168 INFO L125 PetriNetUnfolderBase]: For 11436/11618 co-relation queries the response was YES. [2024-10-31 21:58:17,179 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11686 conditions, 2729 events. 1771/2729 cut-off events. For 11436/11618 co-relation queries the response was YES. Maximal size of possible extension queue 275. Compared 15486 event pairs, 196 based on Foata normal form. 49/2728 useless extension candidates. Maximal degree in co-relation 9056. Up to 1448 conditions per place. [2024-10-31 21:58:17,202 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 99 selfloop transitions, 29 changer transitions 2/137 dead transitions. [2024-10-31 21:58:17,202 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 137 transitions, 1371 flow [2024-10-31 21:58:17,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-31 21:58:17,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-31 21:58:17,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 147 transitions. [2024-10-31 21:58:17,205 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.65625 [2024-10-31 21:58:17,205 INFO L175 Difference]: Start difference. First operand has 71 places, 79 transitions, 742 flow. Second operand 7 states and 147 transitions. [2024-10-31 21:58:17,205 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 137 transitions, 1371 flow [2024-10-31 21:58:17,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 137 transitions, 1314 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-10-31 21:58:17,248 INFO L231 Difference]: Finished difference. Result has 79 places, 82 transitions, 834 flow [2024-10-31 21:58:17,248 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=701, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=834, PETRI_PLACES=79, PETRI_TRANSITIONS=82} [2024-10-31 21:58:17,250 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 44 predicate places. [2024-10-31 21:58:17,251 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 82 transitions, 834 flow [2024-10-31 21:58:17,252 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 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) [2024-10-31 21:58:17,252 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 21:58:17,252 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:58:17,252 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-31 21:58:17,253 INFO L396 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)] === [2024-10-31 21:58:17,253 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:58:17,253 INFO L85 PathProgramCache]: Analyzing trace with hash 686345294, now seen corresponding path program 2 times [2024-10-31 21:58:17,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:58:17,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458597965] [2024-10-31 21:58:17,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:58:17,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:58:17,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:17,522 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:58:17,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:58:17,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458597965] [2024-10-31 21:58:17,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458597965] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:58:17,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:58:17,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-31 21:58:17,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997699488] [2024-10-31 21:58:17,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:58:17,526 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 21:58:17,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:58:17,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 21:58:17,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-31 21:58:17,563 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2024-10-31 21:58:17,564 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 82 transitions, 834 flow. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 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) [2024-10-31 21:58:17,564 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 21:58:17,564 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2024-10-31 21:58:17,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 21:58:18,033 INFO L124 PetriNetUnfolderBase]: 1540/2483 cut-off events. [2024-10-31 21:58:18,034 INFO L125 PetriNetUnfolderBase]: For 12251/12586 co-relation queries the response was YES. [2024-10-31 21:58:18,043 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11134 conditions, 2483 events. 1540/2483 cut-off events. For 12251/12586 co-relation queries the response was YES. Maximal size of possible extension queue 251. Compared 14721 event pairs, 267 based on Foata normal form. 30/2409 useless extension candidates. Maximal degree in co-relation 8566. Up to 1995 conditions per place. [2024-10-31 21:58:18,062 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 71 selfloop transitions, 25 changer transitions 0/109 dead transitions. [2024-10-31 21:58:18,063 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 109 transitions, 1144 flow [2024-10-31 21:58:18,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-31 21:58:18,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-31 21:58:18,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 111 transitions. [2024-10-31 21:58:18,064 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.69375 [2024-10-31 21:58:18,064 INFO L175 Difference]: Start difference. First operand has 79 places, 82 transitions, 834 flow. Second operand 5 states and 111 transitions. [2024-10-31 21:58:18,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 109 transitions, 1144 flow [2024-10-31 21:58:18,098 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 109 transitions, 1109 flow, removed 10 selfloop flow, removed 1 redundant places. [2024-10-31 21:58:18,100 INFO L231 Difference]: Finished difference. Result has 84 places, 84 transitions, 915 flow [2024-10-31 21:58:18,100 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=805, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=915, PETRI_PLACES=84, PETRI_TRANSITIONS=84} [2024-10-31 21:58:18,101 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 49 predicate places. [2024-10-31 21:58:18,101 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 84 transitions, 915 flow [2024-10-31 21:58:18,101 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 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) [2024-10-31 21:58:18,101 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 21:58:18,102 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:58:18,102 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-31 21:58:18,102 INFO L396 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)] === [2024-10-31 21:58:18,102 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:58:18,102 INFO L85 PathProgramCache]: Analyzing trace with hash 1387687040, now seen corresponding path program 1 times [2024-10-31 21:58:18,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:58:18,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943660828] [2024-10-31 21:58:18,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:58:18,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:58:18,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:18,303 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:58:18,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:58:18,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943660828] [2024-10-31 21:58:18,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943660828] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:58:18,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:58:18,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 21:58:18,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998506108] [2024-10-31 21:58:18,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:58:18,304 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 21:58:18,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:58:18,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 21:58:18,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-31 21:58:18,337 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-10-31 21:58:18,337 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 84 transitions, 915 flow. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 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) [2024-10-31 21:58:18,337 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 21:58:18,338 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-10-31 21:58:18,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 21:58:19,146 INFO L124 PetriNetUnfolderBase]: 2611/4222 cut-off events. [2024-10-31 21:58:19,146 INFO L125 PetriNetUnfolderBase]: For 20146/20434 co-relation queries the response was YES. [2024-10-31 21:58:19,167 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18385 conditions, 4222 events. 2611/4222 cut-off events. For 20146/20434 co-relation queries the response was YES. Maximal size of possible extension queue 306. Compared 25712 event pairs, 873 based on Foata normal form. 1/3906 useless extension candidates. Maximal degree in co-relation 15844. Up to 2374 conditions per place. [2024-10-31 21:58:19,198 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 71 selfloop transitions, 43 changer transitions 0/127 dead transitions. [2024-10-31 21:58:19,198 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 127 transitions, 1351 flow [2024-10-31 21:58:19,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-31 21:58:19,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-31 21:58:19,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 108 transitions. [2024-10-31 21:58:19,200 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.675 [2024-10-31 21:58:19,200 INFO L175 Difference]: Start difference. First operand has 84 places, 84 transitions, 915 flow. Second operand 5 states and 108 transitions. [2024-10-31 21:58:19,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 127 transitions, 1351 flow [2024-10-31 21:58:19,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 127 transitions, 1299 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-10-31 21:58:19,392 INFO L231 Difference]: Finished difference. Result has 88 places, 90 transitions, 1066 flow [2024-10-31 21:58:19,395 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=867, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1066, PETRI_PLACES=88, PETRI_TRANSITIONS=90} [2024-10-31 21:58:19,396 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 53 predicate places. [2024-10-31 21:58:19,396 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 90 transitions, 1066 flow [2024-10-31 21:58:19,396 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 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) [2024-10-31 21:58:19,396 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 21:58:19,397 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:58:19,397 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-31 21:58:19,397 INFO L396 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)] === [2024-10-31 21:58:19,398 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:58:19,398 INFO L85 PathProgramCache]: Analyzing trace with hash -2095788596, now seen corresponding path program 2 times [2024-10-31 21:58:19,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:58:19,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343173188] [2024-10-31 21:58:19,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:58:19,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:58:19,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:19,691 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:58:19,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:58:19,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343173188] [2024-10-31 21:58:19,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343173188] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:58:19,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:58:19,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 21:58:19,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309895205] [2024-10-31 21:58:19,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:58:19,694 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 21:58:19,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:58:19,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 21:58:19,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-31 21:58:19,718 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-10-31 21:58:19,718 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 90 transitions, 1066 flow. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 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) [2024-10-31 21:58:19,719 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 21:58:19,719 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-10-31 21:58:19,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 21:58:21,105 INFO L124 PetriNetUnfolderBase]: 3372/5322 cut-off events. [2024-10-31 21:58:21,106 INFO L125 PetriNetUnfolderBase]: For 38275/38780 co-relation queries the response was YES. [2024-10-31 21:58:21,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26271 conditions, 5322 events. 3372/5322 cut-off events. For 38275/38780 co-relation queries the response was YES. Maximal size of possible extension queue 406. Compared 33277 event pairs, 501 based on Foata normal form. 36/5296 useless extension candidates. Maximal degree in co-relation 22364. Up to 2467 conditions per place. [2024-10-31 21:58:21,177 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 122 selfloop transitions, 82 changer transitions 2/219 dead transitions. [2024-10-31 21:58:21,177 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 219 transitions, 3189 flow [2024-10-31 21:58:21,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-31 21:58:21,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-31 21:58:21,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 101 transitions. [2024-10-31 21:58:21,179 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.63125 [2024-10-31 21:58:21,179 INFO L175 Difference]: Start difference. First operand has 88 places, 90 transitions, 1066 flow. Second operand 5 states and 101 transitions. [2024-10-31 21:58:21,179 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 219 transitions, 3189 flow [2024-10-31 21:58:21,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 219 transitions, 3036 flow, removed 21 selfloop flow, removed 1 redundant places. [2024-10-31 21:58:21,328 INFO L231 Difference]: Finished difference. Result has 94 places, 151 transitions, 2256 flow [2024-10-31 21:58:21,328 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1012, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2256, PETRI_PLACES=94, PETRI_TRANSITIONS=151} [2024-10-31 21:58:21,331 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 59 predicate places. [2024-10-31 21:58:21,331 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 151 transitions, 2256 flow [2024-10-31 21:58:21,331 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 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) [2024-10-31 21:58:21,331 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 21:58:21,331 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:58:21,332 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-31 21:58:21,332 INFO L396 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)] === [2024-10-31 21:58:21,332 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:58:21,333 INFO L85 PathProgramCache]: Analyzing trace with hash -318411364, now seen corresponding path program 3 times [2024-10-31 21:58:21,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:58:21,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492473032] [2024-10-31 21:58:21,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:58:21,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:58:21,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:21,662 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:58:21,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:58:21,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492473032] [2024-10-31 21:58:21,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492473032] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:58:21,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:58:21,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 21:58:21,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497787591] [2024-10-31 21:58:21,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:58:21,667 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 21:58:21,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:58:21,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 21:58:21,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-31 21:58:21,791 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-10-31 21:58:21,792 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 151 transitions, 2256 flow. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 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) [2024-10-31 21:58:21,792 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 21:58:21,792 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-10-31 21:58:21,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 21:58:23,522 INFO L124 PetriNetUnfolderBase]: 4223/6917 cut-off events. [2024-10-31 21:58:23,523 INFO L125 PetriNetUnfolderBase]: For 49010/49648 co-relation queries the response was YES. [2024-10-31 21:58:23,566 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36449 conditions, 6917 events. 4223/6917 cut-off events. For 49010/49648 co-relation queries the response was YES. Maximal size of possible extension queue 521. Compared 46649 event pairs, 1077 based on Foata normal form. 41/6896 useless extension candidates. Maximal degree in co-relation 30830. Up to 3408 conditions per place. [2024-10-31 21:58:23,621 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 94 selfloop transitions, 155 changer transitions 4/266 dead transitions. [2024-10-31 21:58:23,621 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 266 transitions, 4200 flow [2024-10-31 21:58:23,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-31 21:58:23,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-31 21:58:23,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 126 transitions. [2024-10-31 21:58:23,623 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.65625 [2024-10-31 21:58:23,623 INFO L175 Difference]: Start difference. First operand has 94 places, 151 transitions, 2256 flow. Second operand 6 states and 126 transitions. [2024-10-31 21:58:23,623 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 266 transitions, 4200 flow [2024-10-31 21:58:23,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 266 transitions, 4196 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-10-31 21:58:23,866 INFO L231 Difference]: Finished difference. Result has 102 places, 210 transitions, 3777 flow [2024-10-31 21:58:23,868 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2254, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3777, PETRI_PLACES=102, PETRI_TRANSITIONS=210} [2024-10-31 21:58:23,869 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 67 predicate places. [2024-10-31 21:58:23,869 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 210 transitions, 3777 flow [2024-10-31 21:58:23,869 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 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) [2024-10-31 21:58:23,869 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 21:58:23,870 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:58:23,870 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-31 21:58:23,870 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-31 21:58:23,872 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:58:23,872 INFO L85 PathProgramCache]: Analyzing trace with hash 750086166, now seen corresponding path program 4 times [2024-10-31 21:58:23,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:58:23,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38670913] [2024-10-31 21:58:23,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:58:23,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:58:23,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:24,290 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:58:24,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:58:24,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38670913] [2024-10-31 21:58:24,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38670913] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:58:24,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:58:24,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 21:58:24,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930799888] [2024-10-31 21:58:24,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:58:24,292 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 21:58:24,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:58:24,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 21:58:24,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-31 21:58:24,318 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-10-31 21:58:24,319 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 210 transitions, 3777 flow. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 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) [2024-10-31 21:58:24,319 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 21:58:24,319 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-10-31 21:58:24,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 21:58:26,113 INFO L124 PetriNetUnfolderBase]: 4203/6971 cut-off events. [2024-10-31 21:58:26,113 INFO L125 PetriNetUnfolderBase]: For 64975/65629 co-relation queries the response was YES. [2024-10-31 21:58:26,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40686 conditions, 6971 events. 4203/6971 cut-off events. For 64975/65629 co-relation queries the response was YES. Maximal size of possible extension queue 534. Compared 48051 event pairs, 684 based on Foata normal form. 48/6941 useless extension candidates. Maximal degree in co-relation 34458. Up to 2948 conditions per place. [2024-10-31 21:58:26,214 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 116 selfloop transitions, 143 changer transitions 4/276 dead transitions. [2024-10-31 21:58:26,214 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 276 transitions, 5029 flow [2024-10-31 21:58:26,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-31 21:58:26,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-31 21:58:26,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 106 transitions. [2024-10-31 21:58:26,216 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6625 [2024-10-31 21:58:26,217 INFO L175 Difference]: Start difference. First operand has 102 places, 210 transitions, 3777 flow. Second operand 5 states and 106 transitions. [2024-10-31 21:58:26,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 276 transitions, 5029 flow [2024-10-31 21:58:26,676 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 276 transitions, 5007 flow, removed 11 selfloop flow, removed 0 redundant places. [2024-10-31 21:58:26,685 INFO L231 Difference]: Finished difference. Result has 110 places, 228 transitions, 4673 flow [2024-10-31 21:58:26,686 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3755, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=4673, PETRI_PLACES=110, PETRI_TRANSITIONS=228} [2024-10-31 21:58:26,687 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 75 predicate places. [2024-10-31 21:58:26,687 INFO L471 AbstractCegarLoop]: Abstraction has has 110 places, 228 transitions, 4673 flow [2024-10-31 21:58:26,687 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 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) [2024-10-31 21:58:26,688 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 21:58:26,688 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:58:26,688 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-31 21:58:26,688 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-31 21:58:26,690 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:58:26,690 INFO L85 PathProgramCache]: Analyzing trace with hash 1157206214, now seen corresponding path program 5 times [2024-10-31 21:58:26,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:58:26,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231734422] [2024-10-31 21:58:26,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:58:26,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:58:26,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:26,974 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:58:26,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:58:26,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231734422] [2024-10-31 21:58:26,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231734422] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:58:26,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:58:26,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 21:58:26,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641112980] [2024-10-31 21:58:26,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:58:26,978 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 21:58:26,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:58:26,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 21:58:26,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-31 21:58:27,008 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-10-31 21:58:27,008 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 228 transitions, 4673 flow. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 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) [2024-10-31 21:58:27,008 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 21:58:27,008 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-10-31 21:58:27,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 21:58:28,619 INFO L124 PetriNetUnfolderBase]: 5239/8265 cut-off events. [2024-10-31 21:58:28,620 INFO L125 PetriNetUnfolderBase]: For 96833/97423 co-relation queries the response was YES. [2024-10-31 21:58:28,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51677 conditions, 8265 events. 5239/8265 cut-off events. For 96833/97423 co-relation queries the response was YES. Maximal size of possible extension queue 568. Compared 53294 event pairs, 1241 based on Foata normal form. 39/8261 useless extension candidates. Maximal degree in co-relation 43171. Up to 4329 conditions per place. [2024-10-31 21:58:28,744 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 104 selfloop transitions, 187 changer transitions 3/304 dead transitions. [2024-10-31 21:58:28,744 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 304 transitions, 5983 flow [2024-10-31 21:58:28,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-31 21:58:28,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-31 21:58:28,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 126 transitions. [2024-10-31 21:58:28,753 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.65625 [2024-10-31 21:58:28,753 INFO L175 Difference]: Start difference. First operand has 110 places, 228 transitions, 4673 flow. Second operand 6 states and 126 transitions. [2024-10-31 21:58:28,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 304 transitions, 5983 flow [2024-10-31 21:58:29,243 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 304 transitions, 5977 flow, removed 3 selfloop flow, removed 0 redundant places. [2024-10-31 21:58:29,249 INFO L231 Difference]: Finished difference. Result has 118 places, 245 transitions, 5483 flow [2024-10-31 21:58:29,249 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4645, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=169, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=5483, PETRI_PLACES=118, PETRI_TRANSITIONS=245} [2024-10-31 21:58:29,250 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 83 predicate places. [2024-10-31 21:58:29,250 INFO L471 AbstractCegarLoop]: Abstraction has has 118 places, 245 transitions, 5483 flow [2024-10-31 21:58:29,250 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 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) [2024-10-31 21:58:29,251 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 21:58:29,251 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:58:29,251 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-31 21:58:29,251 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-31 21:58:29,252 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:58:29,252 INFO L85 PathProgramCache]: Analyzing trace with hash 365433910, now seen corresponding path program 6 times [2024-10-31 21:58:29,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:58:29,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455584651] [2024-10-31 21:58:29,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:58:29,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:58:29,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:29,632 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:58:29,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:58:29,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455584651] [2024-10-31 21:58:29,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455584651] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 21:58:29,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [370047472] [2024-10-31 21:58:29,636 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-31 21:58:29,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 21:58:29,637 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f0c682-7619-4c06-9156-d7a249ca18d7/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:58:29,640 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f0c682-7619-4c06-9156-d7a249ca18d7/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 21:58:29,643 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f0c682-7619-4c06-9156-d7a249ca18d7/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-31 21:58:29,725 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-10-31 21:58:29,725 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-31 21:58:29,727 INFO L255 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-31 21:58:29,733 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 21:58:30,261 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:58:30,262 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 21:58:30,732 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:58:30,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [370047472] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 21:58:30,733 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 21:58:30,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 4] total 12 [2024-10-31 21:58:30,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045975033] [2024-10-31 21:58:30,733 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 21:58:30,734 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-31 21:58:30,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:58:30,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-31 21:58:30,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2024-10-31 21:58:30,774 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-10-31 21:58:30,774 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 245 transitions, 5483 flow. Second operand has 12 states, 12 states have (on average 12.75) internal successors, (153), 12 states have internal predecessors, (153), 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) [2024-10-31 21:58:30,774 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 21:58:30,774 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-10-31 21:58:30,774 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 21:58:34,189 INFO L124 PetriNetUnfolderBase]: 6801/10631 cut-off events. [2024-10-31 21:58:34,189 INFO L125 PetriNetUnfolderBase]: For 138048/138836 co-relation queries the response was YES. [2024-10-31 21:58:34,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70006 conditions, 10631 events. 6801/10631 cut-off events. For 138048/138836 co-relation queries the response was YES. Maximal size of possible extension queue 651. Compared 69620 event pairs, 521 based on Foata normal form. 153/10753 useless extension candidates. Maximal degree in co-relation 58979. Up to 2847 conditions per place. [2024-10-31 21:58:34,327 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 177 selfloop transitions, 243 changer transitions 14/444 dead transitions. [2024-10-31 21:58:34,328 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 444 transitions, 8203 flow [2024-10-31 21:58:34,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-31 21:58:34,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-10-31 21:58:34,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 330 transitions. [2024-10-31 21:58:34,330 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.64453125 [2024-10-31 21:58:34,330 INFO L175 Difference]: Start difference. First operand has 118 places, 245 transitions, 5483 flow. Second operand 16 states and 330 transitions. [2024-10-31 21:58:34,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 444 transitions, 8203 flow [2024-10-31 21:58:35,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 444 transitions, 7998 flow, removed 5 selfloop flow, removed 1 redundant places. [2024-10-31 21:58:35,122 INFO L231 Difference]: Finished difference. Result has 138 places, 293 transitions, 6845 flow [2024-10-31 21:58:35,122 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5303, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=195, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=6845, PETRI_PLACES=138, PETRI_TRANSITIONS=293} [2024-10-31 21:58:35,123 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 103 predicate places. [2024-10-31 21:58:35,123 INFO L471 AbstractCegarLoop]: Abstraction has has 138 places, 293 transitions, 6845 flow [2024-10-31 21:58:35,123 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.75) internal successors, (153), 12 states have internal predecessors, (153), 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) [2024-10-31 21:58:35,123 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 21:58:35,124 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:58:35,138 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f0c682-7619-4c06-9156-d7a249ca18d7/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-31 21:58:35,324 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f0c682-7619-4c06-9156-d7a249ca18d7/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 21:58:35,325 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-31 21:58:35,325 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:58:35,325 INFO L85 PathProgramCache]: Analyzing trace with hash 284609908, now seen corresponding path program 3 times [2024-10-31 21:58:35,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:58:35,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623598225] [2024-10-31 21:58:35,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:58:35,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:58:35,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:35,456 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:58:35,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:58:35,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623598225] [2024-10-31 21:58:35,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623598225] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:58:35,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:58:35,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-31 21:58:35,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27264250] [2024-10-31 21:58:35,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:58:35,457 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 21:58:35,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:58:35,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 21:58:35,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-31 21:58:35,485 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2024-10-31 21:58:35,486 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 293 transitions, 6845 flow. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 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) [2024-10-31 21:58:35,487 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 21:58:35,487 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2024-10-31 21:58:35,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand