./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread/queue_ok.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc 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_a409f0e8-06a4-43ef-9806-14a26b73879e/bin/uautomizer-verify-NlZe1sFDwI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a409f0e8-06a4-43ef-9806-14a26b73879e/bin/uautomizer-verify-NlZe1sFDwI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a409f0e8-06a4-43ef-9806-14a26b73879e/bin/uautomizer-verify-NlZe1sFDwI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a409f0e8-06a4-43ef-9806-14a26b73879e/bin/uautomizer-verify-NlZe1sFDwI/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/queue_ok.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a409f0e8-06a4-43ef-9806-14a26b73879e/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a409f0e8-06a4-43ef-9806-14a26b73879e/bin/uautomizer-verify-NlZe1sFDwI --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7cc273f13a619f37768d5108c297b75ab7c37145fe391daced9c134730721251 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 21:49:08,926 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 21:49:09,045 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a409f0e8-06a4-43ef-9806-14a26b73879e/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-24 21:49:09,060 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 21:49:09,061 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 21:49:09,113 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 21:49:09,114 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 21:49:09,114 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 21:49:09,115 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-24 21:49:09,116 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-24 21:49:09,117 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 21:49:09,117 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 21:49:09,118 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-24 21:49:09,119 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-24 21:49:09,120 INFO L153 SettingsManager]: * Use SBE=true [2023-11-24 21:49:09,121 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 21:49:09,121 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 21:49:09,122 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 21:49:09,123 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 21:49:09,123 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 21:49:09,124 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 21:49:09,125 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 21:49:09,125 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 21:49:09,126 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 21:49:09,127 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 21:49:09,127 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 21:49:09,128 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 21:49:09,129 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 21:49:09,129 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-24 21:49:09,130 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 21:49:09,130 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 21:49:09,131 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:49:09,131 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 21:49:09,132 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 21:49:09,132 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-24 21:49:09,133 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-24 21:49:09,133 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 21:49:09,134 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 21:49:09,134 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-24 21:49:09,135 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-24 21:49:09,135 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-24 21:49:09,136 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 21:49:09,136 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_a409f0e8-06a4-43ef-9806-14a26b73879e/bin/uautomizer-verify-NlZe1sFDwI/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a409f0e8-06a4-43ef-9806-14a26b73879e/bin/uautomizer-verify-NlZe1sFDwI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7cc273f13a619f37768d5108c297b75ab7c37145fe391daced9c134730721251 [2023-11-24 21:49:09,507 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 21:49:09,548 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 21:49:09,551 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 21:49:09,553 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 21:49:09,553 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 21:49:09,555 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a409f0e8-06a4-43ef-9806-14a26b73879e/bin/uautomizer-verify-NlZe1sFDwI/../../sv-benchmarks/c/pthread/queue_ok.i [2023-11-24 21:49:13,239 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 21:49:13,728 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 21:49:13,732 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a409f0e8-06a4-43ef-9806-14a26b73879e/sv-benchmarks/c/pthread/queue_ok.i [2023-11-24 21:49:13,759 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a409f0e8-06a4-43ef-9806-14a26b73879e/bin/uautomizer-verify-NlZe1sFDwI/data/7ab336fb7/2439b4d955304b8fa366a40765187f6a/FLAG3e243efa6 [2023-11-24 21:49:13,780 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a409f0e8-06a4-43ef-9806-14a26b73879e/bin/uautomizer-verify-NlZe1sFDwI/data/7ab336fb7/2439b4d955304b8fa366a40765187f6a [2023-11-24 21:49:13,788 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 21:49:13,791 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 21:49:13,794 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 21:49:13,794 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 21:49:13,801 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 21:49:13,804 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:49:13" (1/1) ... [2023-11-24 21:49:13,806 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3874812b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:49:13, skipping insertion in model container [2023-11-24 21:49:13,806 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:49:13" (1/1) ... [2023-11-24 21:49:13,901 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 21:49:14,571 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a409f0e8-06a4-43ef-9806-14a26b73879e/sv-benchmarks/c/pthread/queue_ok.i[43266,43279] [2023-11-24 21:49:14,579 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a409f0e8-06a4-43ef-9806-14a26b73879e/sv-benchmarks/c/pthread/queue_ok.i[43543,43556] [2023-11-24 21:49:14,586 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:49:14,602 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 21:49:14,668 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a409f0e8-06a4-43ef-9806-14a26b73879e/sv-benchmarks/c/pthread/queue_ok.i[43266,43279] [2023-11-24 21:49:14,672 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a409f0e8-06a4-43ef-9806-14a26b73879e/sv-benchmarks/c/pthread/queue_ok.i[43543,43556] [2023-11-24 21:49:14,676 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:49:14,773 INFO L206 MainTranslator]: Completed translation [2023-11-24 21:49:14,773 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:49:14 WrapperNode [2023-11-24 21:49:14,774 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 21:49:14,775 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 21:49:14,776 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 21:49:14,776 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 21:49:14,786 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:49:14" (1/1) ... [2023-11-24 21:49:14,817 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:49:14" (1/1) ... [2023-11-24 21:49:14,881 INFO L138 Inliner]: procedures = 275, calls = 59, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 208 [2023-11-24 21:49:14,882 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 21:49:14,883 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 21:49:14,883 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 21:49:14,883 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 21:49:14,909 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:49:14" (1/1) ... [2023-11-24 21:49:14,909 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:49:14" (1/1) ... [2023-11-24 21:49:14,916 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:49:14" (1/1) ... [2023-11-24 21:49:14,955 INFO L175 MemorySlicer]: Split 38 memory accesses to 6 slices as follows [2, 24, 5, 3, 2, 2]. 63 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 0, 5, 0, 0, 0]. The 15 writes are split as follows [0, 11, 0, 2, 1, 1]. [2023-11-24 21:49:14,955 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:49:14" (1/1) ... [2023-11-24 21:49:14,956 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:49:14" (1/1) ... [2023-11-24 21:49:14,972 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:49:14" (1/1) ... [2023-11-24 21:49:14,977 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:49:14" (1/1) ... [2023-11-24 21:49:14,981 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:49:14" (1/1) ... [2023-11-24 21:49:14,984 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:49:14" (1/1) ... [2023-11-24 21:49:14,991 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 21:49:14,992 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 21:49:14,992 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 21:49:14,993 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 21:49:14,994 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:49:14" (1/1) ... [2023-11-24 21:49:15,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:49:15,022 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a409f0e8-06a4-43ef-9806-14a26b73879e/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 21:49:15,048 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a409f0e8-06a4-43ef-9806-14a26b73879e/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-24 21:49:15,069 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a409f0e8-06a4-43ef-9806-14a26b73879e/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-24 21:49:15,092 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-11-24 21:49:15,092 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-11-24 21:49:15,093 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-11-24 21:49:15,093 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-11-24 21:49:15,093 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-24 21:49:15,094 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-24 21:49:15,094 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-24 21:49:15,094 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-24 21:49:15,094 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-24 21:49:15,095 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-24 21:49:15,095 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-24 21:49:15,095 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-24 21:49:15,095 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2023-11-24 21:49:15,096 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-24 21:49:15,096 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-24 21:49:15,096 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-24 21:49:15,096 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-24 21:49:15,097 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-24 21:49:15,097 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2023-11-24 21:49:15,097 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-24 21:49:15,097 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 21:49:15,097 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-24 21:49:15,098 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-24 21:49:15,098 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-24 21:49:15,098 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-24 21:49:15,098 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-24 21:49:15,098 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-11-24 21:49:15,099 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 21:49:15,099 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 21:49:15,106 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-24 21:49:15,323 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 21:49:15,326 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 21:49:15,939 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 21:49:16,460 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 21:49:16,460 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-24 21:49:16,461 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:49:16 BoogieIcfgContainer [2023-11-24 21:49:16,462 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 21:49:16,465 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 21:49:16,466 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 21:49:16,470 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 21:49:16,471 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 09:49:13" (1/3) ... [2023-11-24 21:49:16,472 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@177b6fb9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 09:49:16, skipping insertion in model container [2023-11-24 21:49:16,472 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:49:14" (2/3) ... [2023-11-24 21:49:16,474 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@177b6fb9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 09:49:16, skipping insertion in model container [2023-11-24 21:49:16,475 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:49:16" (3/3) ... [2023-11-24 21:49:16,476 INFO L112 eAbstractionObserver]: Analyzing ICFG queue_ok.i [2023-11-24 21:49:16,490 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-24 21:49:16,504 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 21:49:16,504 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-24 21:49:16,505 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-24 21:49:16,607 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-24 21:49:16,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 41 places, 41 transitions, 96 flow [2023-11-24 21:49:16,708 INFO L124 PetriNetUnfolderBase]: 7/39 cut-off events. [2023-11-24 21:49:16,711 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-24 21:49:16,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48 conditions, 39 events. 7/39 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 49 event pairs, 0 based on Foata normal form. 0/30 useless extension candidates. Maximal degree in co-relation 30. Up to 3 conditions per place. [2023-11-24 21:49:16,719 INFO L82 GeneralOperation]: Start removeDead. Operand has 41 places, 41 transitions, 96 flow [2023-11-24 21:49:16,726 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 37 places, 37 transitions, 83 flow [2023-11-24 21:49:16,756 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 21:49:16,762 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@3ea5e7e0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 21:49:16,763 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-11-24 21:49:16,769 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-24 21:49:16,769 INFO L124 PetriNetUnfolderBase]: 1/4 cut-off events. [2023-11-24 21:49:16,769 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-24 21:49:16,770 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:49:16,770 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-24 21:49:16,771 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-24 21:49:16,778 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:49:16,778 INFO L85 PathProgramCache]: Analyzing trace with hash 545855, now seen corresponding path program 1 times [2023-11-24 21:49:16,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:49:16,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905726849] [2023-11-24 21:49:16,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:49:16,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:49:16,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:49:17,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:49:17,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:49:17,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905726849] [2023-11-24 21:49:17,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905726849] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:49:17,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:49:17,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 21:49:17,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139623585] [2023-11-24 21:49:17,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:49:17,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-24 21:49:17,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:49:17,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-24 21:49:17,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-24 21:49:17,191 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2023-11-24 21:49:17,194 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 37 transitions, 83 flow. Second operand has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:49:17,195 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:49:17,195 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2023-11-24 21:49:17,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:49:17,506 INFO L124 PetriNetUnfolderBase]: 303/522 cut-off events. [2023-11-24 21:49:17,506 INFO L125 PetriNetUnfolderBase]: For 27/27 co-relation queries the response was YES. [2023-11-24 21:49:17,510 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1035 conditions, 522 events. 303/522 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2051 event pairs, 209 based on Foata normal form. 16/458 useless extension candidates. Maximal degree in co-relation 914. Up to 485 conditions per place. [2023-11-24 21:49:17,517 INFO L140 encePairwiseOnDemand]: 39/41 looper letters, 26 selfloop transitions, 0 changer transitions 2/33 dead transitions. [2023-11-24 21:49:17,518 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 33 transitions, 131 flow [2023-11-24 21:49:17,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 21:49:17,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-24 21:49:17,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 46 transitions. [2023-11-24 21:49:17,535 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5609756097560976 [2023-11-24 21:49:17,536 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 46 transitions. [2023-11-24 21:49:17,537 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 46 transitions. [2023-11-24 21:49:17,538 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:49:17,541 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 46 transitions. [2023-11-24 21:49:17,545 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:49:17,553 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:49:17,554 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:49:17,556 INFO L175 Difference]: Start difference. First operand has 37 places, 37 transitions, 83 flow. Second operand 2 states and 46 transitions. [2023-11-24 21:49:17,558 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 33 transitions, 131 flow [2023-11-24 21:49:17,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 33 transitions, 126 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-24 21:49:17,565 INFO L231 Difference]: Finished difference. Result has 33 places, 31 transitions, 66 flow [2023-11-24 21:49:17,568 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=66, PETRI_PLACES=33, PETRI_TRANSITIONS=31} [2023-11-24 21:49:17,573 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, -4 predicate places. [2023-11-24 21:49:17,574 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 31 transitions, 66 flow [2023-11-24 21:49:17,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:49:17,574 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:49:17,575 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:49:17,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-24 21:49:17,575 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-24 21:49:17,576 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:49:17,576 INFO L85 PathProgramCache]: Analyzing trace with hash -684618514, now seen corresponding path program 1 times [2023-11-24 21:49:17,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:49:17,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840409554] [2023-11-24 21:49:17,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:49:17,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:49:17,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:49:18,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:49:18,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:49:18,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840409554] [2023-11-24 21:49:18,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840409554] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:49:18,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:49:18,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 21:49:18,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527084662] [2023-11-24 21:49:18,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:49:18,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:49:18,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:49:18,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:49:18,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:49:18,057 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2023-11-24 21:49:18,058 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 31 transitions, 66 flow. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:49:18,058 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:49:18,058 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2023-11-24 21:49:18,058 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:49:18,225 INFO L124 PetriNetUnfolderBase]: 159/324 cut-off events. [2023-11-24 21:49:18,225 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-24 21:49:18,231 INFO L83 FinitePrefix]: Finished finitePrefix Result has 638 conditions, 324 events. 159/324 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1158 event pairs, 83 based on Foata normal form. 14/302 useless extension candidates. Maximal degree in co-relation 635. Up to 163 conditions per place. [2023-11-24 21:49:18,237 INFO L140 encePairwiseOnDemand]: 37/41 looper letters, 28 selfloop transitions, 2 changer transitions 5/40 dead transitions. [2023-11-24 21:49:18,240 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 40 transitions, 157 flow [2023-11-24 21:49:18,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:49:18,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:49:18,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 60 transitions. [2023-11-24 21:49:18,244 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4878048780487805 [2023-11-24 21:49:18,245 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 60 transitions. [2023-11-24 21:49:18,246 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 60 transitions. [2023-11-24 21:49:18,247 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:49:18,247 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 60 transitions. [2023-11-24 21:49:18,254 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:49:18,257 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:49:18,259 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:49:18,259 INFO L175 Difference]: Start difference. First operand has 33 places, 31 transitions, 66 flow. Second operand 3 states and 60 transitions. [2023-11-24 21:49:18,260 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 40 transitions, 157 flow [2023-11-24 21:49:18,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 40 transitions, 157 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-24 21:49:18,265 INFO L231 Difference]: Finished difference. Result has 34 places, 30 transitions, 72 flow [2023-11-24 21:49:18,266 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=72, PETRI_PLACES=34, PETRI_TRANSITIONS=30} [2023-11-24 21:49:18,268 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, -3 predicate places. [2023-11-24 21:49:18,269 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 30 transitions, 72 flow [2023-11-24 21:49:18,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:49:18,270 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:49:18,270 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:49:18,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-24 21:49:18,271 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-24 21:49:18,272 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:49:18,273 INFO L85 PathProgramCache]: Analyzing trace with hash 1126795683, now seen corresponding path program 1 times [2023-11-24 21:49:18,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:49:18,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413272032] [2023-11-24 21:49:18,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:49:18,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:49:18,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:49:18,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:49:18,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:49:18,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413272032] [2023-11-24 21:49:18,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413272032] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:49:18,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:49:18,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 21:49:18,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812685490] [2023-11-24 21:49:18,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:49:18,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:49:18,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:49:18,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:49:18,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:49:18,514 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2023-11-24 21:49:18,515 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 30 transitions, 72 flow. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:49:18,515 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:49:18,515 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2023-11-24 21:49:18,516 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:49:18,652 INFO L124 PetriNetUnfolderBase]: 160/327 cut-off events. [2023-11-24 21:49:18,653 INFO L125 PetriNetUnfolderBase]: For 17/17 co-relation queries the response was YES. [2023-11-24 21:49:18,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 673 conditions, 327 events. 160/327 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1159 event pairs, 127 based on Foata normal form. 8/315 useless extension candidates. Maximal degree in co-relation 668. Up to 279 conditions per place. [2023-11-24 21:49:18,657 INFO L140 encePairwiseOnDemand]: 38/41 looper letters, 29 selfloop transitions, 2 changer transitions 0/36 dead transitions. [2023-11-24 21:49:18,657 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 36 transitions, 148 flow [2023-11-24 21:49:18,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:49:18,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:49:18,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 56 transitions. [2023-11-24 21:49:18,660 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45528455284552843 [2023-11-24 21:49:18,661 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 56 transitions. [2023-11-24 21:49:18,661 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 56 transitions. [2023-11-24 21:49:18,663 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:49:18,663 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 56 transitions. [2023-11-24 21:49:18,664 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 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) [2023-11-24 21:49:18,665 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:49:18,665 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:49:18,666 INFO L175 Difference]: Start difference. First operand has 34 places, 30 transitions, 72 flow. Second operand 3 states and 56 transitions. [2023-11-24 21:49:18,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 36 transitions, 148 flow [2023-11-24 21:49:18,668 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 36 transitions, 144 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 21:49:18,669 INFO L231 Difference]: Finished difference. Result has 35 places, 31 transitions, 80 flow [2023-11-24 21:49:18,670 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=80, PETRI_PLACES=35, PETRI_TRANSITIONS=31} [2023-11-24 21:49:18,671 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, -2 predicate places. [2023-11-24 21:49:18,672 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 31 transitions, 80 flow [2023-11-24 21:49:18,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:49:18,672 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:49:18,672 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:49:18,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-24 21:49:18,675 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-24 21:49:18,676 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:49:18,676 INFO L85 PathProgramCache]: Analyzing trace with hash 1293593400, now seen corresponding path program 1 times [2023-11-24 21:49:18,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:49:18,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432393198] [2023-11-24 21:49:18,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:49:18,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:49:18,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:49:18,801 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:49:18,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:49:18,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432393198] [2023-11-24 21:49:18,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432393198] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 21:49:18,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2085026909] [2023-11-24 21:49:18,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:49:18,802 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 21:49:18,803 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a409f0e8-06a4-43ef-9806-14a26b73879e/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 21:49:18,806 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a409f0e8-06a4-43ef-9806-14a26b73879e/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 21:49:18,820 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a409f0e8-06a4-43ef-9806-14a26b73879e/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-24 21:49:19,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:49:19,005 INFO L262 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-24 21:49:19,011 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:49:19,059 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-24 21:49:19,079 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:49:19,079 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:49:19,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2085026909] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:49:19,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-24 21:49:19,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-11-24 21:49:19,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522566868] [2023-11-24 21:49:19,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:49:19,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:49:19,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:49:19,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:49:19,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-24 21:49:19,082 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2023-11-24 21:49:19,083 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 31 transitions, 80 flow. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:49:19,083 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:49:19,083 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2023-11-24 21:49:19,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:49:19,218 INFO L124 PetriNetUnfolderBase]: 123/290 cut-off events. [2023-11-24 21:49:19,218 INFO L125 PetriNetUnfolderBase]: For 31/31 co-relation queries the response was YES. [2023-11-24 21:49:19,219 INFO L83 FinitePrefix]: Finished finitePrefix Result has 599 conditions, 290 events. 123/290 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1064 event pairs, 35 based on Foata normal form. 10/282 useless extension candidates. Maximal degree in co-relation 593. Up to 158 conditions per place. [2023-11-24 21:49:19,221 INFO L140 encePairwiseOnDemand]: 38/41 looper letters, 30 selfloop transitions, 3 changer transitions 1/39 dead transitions. [2023-11-24 21:49:19,222 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 39 transitions, 167 flow [2023-11-24 21:49:19,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:49:19,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:49:19,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 59 transitions. [2023-11-24 21:49:19,224 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4796747967479675 [2023-11-24 21:49:19,224 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 59 transitions. [2023-11-24 21:49:19,224 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 59 transitions. [2023-11-24 21:49:19,224 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:49:19,225 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 59 transitions. [2023-11-24 21:49:19,225 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 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) [2023-11-24 21:49:19,226 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:49:19,227 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:49:19,227 INFO L175 Difference]: Start difference. First operand has 35 places, 31 transitions, 80 flow. Second operand 3 states and 59 transitions. [2023-11-24 21:49:19,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 39 transitions, 167 flow [2023-11-24 21:49:19,229 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 39 transitions, 163 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-24 21:49:19,230 INFO L231 Difference]: Finished difference. Result has 36 places, 31 transitions, 82 flow [2023-11-24 21:49:19,231 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=82, PETRI_PLACES=36, PETRI_TRANSITIONS=31} [2023-11-24 21:49:19,232 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, -1 predicate places. [2023-11-24 21:49:19,232 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 31 transitions, 82 flow [2023-11-24 21:49:19,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:49:19,233 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:49:19,233 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:49:19,250 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a409f0e8-06a4-43ef-9806-14a26b73879e/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-24 21:49:19,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a409f0e8-06a4-43ef-9806-14a26b73879e/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 21:49:19,451 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-24 21:49:19,451 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:49:19,452 INFO L85 PathProgramCache]: Analyzing trace with hash 648405293, now seen corresponding path program 1 times [2023-11-24 21:49:19,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:49:19,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378805829] [2023-11-24 21:49:19,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:49:19,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:49:19,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:49:19,606 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:49:19,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:49:19,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378805829] [2023-11-24 21:49:19,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378805829] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 21:49:19,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1049003929] [2023-11-24 21:49:19,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:49:19,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 21:49:19,608 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a409f0e8-06a4-43ef-9806-14a26b73879e/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 21:49:19,609 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a409f0e8-06a4-43ef-9806-14a26b73879e/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 21:49:19,625 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a409f0e8-06a4-43ef-9806-14a26b73879e/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-24 21:49:19,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:49:19,794 INFO L262 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-24 21:49:19,796 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:49:19,816 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:49:19,816 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 21:49:19,839 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:49:19,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1049003929] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 21:49:19,839 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-24 21:49:19,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2023-11-24 21:49:19,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591416874] [2023-11-24 21:49:19,840 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-24 21:49:19,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-24 21:49:19,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:49:19,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-24 21:49:19,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-24 21:49:19,843 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2023-11-24 21:49:19,843 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 31 transitions, 82 flow. Second operand has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 7 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:49:19,843 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:49:19,843 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2023-11-24 21:49:19,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:49:20,047 INFO L124 PetriNetUnfolderBase]: 141/302 cut-off events. [2023-11-24 21:49:20,048 INFO L125 PetriNetUnfolderBase]: For 39/39 co-relation queries the response was YES. [2023-11-24 21:49:20,049 INFO L83 FinitePrefix]: Finished finitePrefix Result has 693 conditions, 302 events. 141/302 cut-off events. For 39/39 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 974 event pairs, 99 based on Foata normal form. 0/280 useless extension candidates. Maximal degree in co-relation 687. Up to 229 conditions per place. [2023-11-24 21:49:20,051 INFO L140 encePairwiseOnDemand]: 38/41 looper letters, 40 selfloop transitions, 5 changer transitions 0/50 dead transitions. [2023-11-24 21:49:20,051 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 50 transitions, 224 flow [2023-11-24 21:49:20,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-24 21:49:20,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-24 21:49:20,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 96 transitions. [2023-11-24 21:49:20,053 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3902439024390244 [2023-11-24 21:49:20,054 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 96 transitions. [2023-11-24 21:49:20,054 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 96 transitions. [2023-11-24 21:49:20,054 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:49:20,054 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 96 transitions. [2023-11-24 21:49:20,055 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 16.0) internal successors, (96), 6 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:49:20,056 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 41.0) internal successors, (287), 7 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:49:20,057 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 41.0) internal successors, (287), 7 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:49:20,057 INFO L175 Difference]: Start difference. First operand has 36 places, 31 transitions, 82 flow. Second operand 6 states and 96 transitions. [2023-11-24 21:49:20,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 50 transitions, 224 flow [2023-11-24 21:49:20,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 50 transitions, 221 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-24 21:49:20,060 INFO L231 Difference]: Finished difference. Result has 43 places, 34 transitions, 115 flow [2023-11-24 21:49:20,061 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=79, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=115, PETRI_PLACES=43, PETRI_TRANSITIONS=34} [2023-11-24 21:49:20,062 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 6 predicate places. [2023-11-24 21:49:20,062 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 34 transitions, 115 flow [2023-11-24 21:49:20,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 7 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:49:20,063 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:49:20,063 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:49:20,081 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a409f0e8-06a4-43ef-9806-14a26b73879e/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-24 21:49:20,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a409f0e8-06a4-43ef-9806-14a26b73879e/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 21:49:20,271 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-24 21:49:20,271 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:49:20,271 INFO L85 PathProgramCache]: Analyzing trace with hash 760911586, now seen corresponding path program 2 times [2023-11-24 21:49:20,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:49:20,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520703557] [2023-11-24 21:49:20,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:49:20,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:49:20,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:49:20,523 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:49:20,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:49:20,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520703557] [2023-11-24 21:49:20,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520703557] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 21:49:20,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [677068979] [2023-11-24 21:49:20,525 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-24 21:49:20,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 21:49:20,525 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a409f0e8-06a4-43ef-9806-14a26b73879e/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 21:49:20,526 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a409f0e8-06a4-43ef-9806-14a26b73879e/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 21:49:20,548 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a409f0e8-06a4-43ef-9806-14a26b73879e/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-24 21:49:20,840 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-24 21:49:20,840 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-24 21:49:20,843 INFO L262 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-24 21:49:20,846 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:49:20,887 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:49:20,887 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 21:49:20,967 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:49:20,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [677068979] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 21:49:20,967 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-24 21:49:20,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2023-11-24 21:49:20,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142522072] [2023-11-24 21:49:20,968 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-24 21:49:20,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-24 21:49:20,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:49:20,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-24 21:49:20,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-11-24 21:49:20,971 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2023-11-24 21:49:20,972 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 34 transitions, 115 flow. Second operand has 13 states, 13 states have (on average 10.384615384615385) internal successors, (135), 13 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:49:20,972 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:49:20,972 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2023-11-24 21:49:20,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:49:21,276 INFO L124 PetriNetUnfolderBase]: 177/374 cut-off events. [2023-11-24 21:49:21,276 INFO L125 PetriNetUnfolderBase]: For 201/201 co-relation queries the response was YES. [2023-11-24 21:49:21,277 INFO L83 FinitePrefix]: Finished finitePrefix Result has 975 conditions, 374 events. 177/374 cut-off events. For 201/201 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1174 event pairs, 99 based on Foata normal form. 36/394 useless extension candidates. Maximal degree in co-relation 965. Up to 229 conditions per place. [2023-11-24 21:49:21,280 INFO L140 encePairwiseOnDemand]: 38/41 looper letters, 64 selfloop transitions, 11 changer transitions 0/80 dead transitions. [2023-11-24 21:49:21,280 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 80 transitions, 401 flow [2023-11-24 21:49:21,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-24 21:49:21,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-24 21:49:21,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 177 transitions. [2023-11-24 21:49:21,283 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3597560975609756 [2023-11-24 21:49:21,283 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 177 transitions. [2023-11-24 21:49:21,283 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 177 transitions. [2023-11-24 21:49:21,284 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:49:21,284 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 177 transitions. [2023-11-24 21:49:21,285 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 14.75) internal successors, (177), 12 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:49:21,288 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 41.0) internal successors, (533), 13 states have internal predecessors, (533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:49:21,288 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 41.0) internal successors, (533), 13 states have internal predecessors, (533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:49:21,288 INFO L175 Difference]: Start difference. First operand has 43 places, 34 transitions, 115 flow. Second operand 12 states and 177 transitions. [2023-11-24 21:49:21,288 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 80 transitions, 401 flow [2023-11-24 21:49:21,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 80 transitions, 387 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-11-24 21:49:21,298 INFO L231 Difference]: Finished difference. Result has 59 places, 40 transitions, 185 flow [2023-11-24 21:49:21,298 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=101, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=185, PETRI_PLACES=59, PETRI_TRANSITIONS=40} [2023-11-24 21:49:21,301 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 22 predicate places. [2023-11-24 21:49:21,301 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 40 transitions, 185 flow [2023-11-24 21:49:21,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.384615384615385) internal successors, (135), 13 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:49:21,303 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:49:21,303 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:49:21,316 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a409f0e8-06a4-43ef-9806-14a26b73879e/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-24 21:49:21,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a409f0e8-06a4-43ef-9806-14a26b73879e/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-24 21:49:21,511 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-24 21:49:21,511 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:49:21,512 INFO L85 PathProgramCache]: Analyzing trace with hash 843277058, now seen corresponding path program 3 times [2023-11-24 21:49:21,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:49:21,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318223314] [2023-11-24 21:49:21,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:49:21,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:49:21,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:49:22,092 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:49:22,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:49:22,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318223314] [2023-11-24 21:49:22,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318223314] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 21:49:22,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2017242675] [2023-11-24 21:49:22,094 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-24 21:49:22,094 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 21:49:22,094 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a409f0e8-06a4-43ef-9806-14a26b73879e/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 21:49:22,095 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a409f0e8-06a4-43ef-9806-14a26b73879e/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 21:49:22,116 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a409f0e8-06a4-43ef-9806-14a26b73879e/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-24 21:49:27,704 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-11-24 21:49:27,704 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-24 21:49:27,715 INFO L262 TraceCheckSpWp]: Trace formula consists of 441 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-24 21:49:27,719 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:49:27,762 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:49:27,762 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 21:49:28,030 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:49:28,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2017242675] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 21:49:28,031 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-24 21:49:28,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 23 [2023-11-24 21:49:28,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893013461] [2023-11-24 21:49:28,032 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-24 21:49:28,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-24 21:49:28,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:49:28,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-24 21:49:28,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2023-11-24 21:49:28,035 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2023-11-24 21:49:28,036 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 40 transitions, 185 flow. Second operand has 23 states, 23 states have (on average 9.826086956521738) internal successors, (226), 23 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:49:28,036 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:49:28,036 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2023-11-24 21:49:28,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:49:28,568 INFO L124 PetriNetUnfolderBase]: 237/494 cut-off events. [2023-11-24 21:49:28,568 INFO L125 PetriNetUnfolderBase]: For 2505/2505 co-relation queries the response was YES. [2023-11-24 21:49:28,571 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1524 conditions, 494 events. 237/494 cut-off events. For 2505/2505 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1510 event pairs, 99 based on Foata normal form. 60/538 useless extension candidates. Maximal degree in co-relation 1507. Up to 229 conditions per place. [2023-11-24 21:49:28,574 INFO L140 encePairwiseOnDemand]: 38/41 looper letters, 104 selfloop transitions, 21 changer transitions 0/130 dead transitions. [2023-11-24 21:49:28,575 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 130 transitions, 715 flow [2023-11-24 21:49:28,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-24 21:49:28,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-11-24 21:49:28,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 311 transitions. [2023-11-24 21:49:28,578 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34478935698447893 [2023-11-24 21:49:28,578 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 311 transitions. [2023-11-24 21:49:28,579 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 311 transitions. [2023-11-24 21:49:28,579 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:49:28,579 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 311 transitions. [2023-11-24 21:49:28,581 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 14.136363636363637) internal successors, (311), 22 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:49:28,584 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 41.0) internal successors, (943), 23 states have internal predecessors, (943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:49:28,585 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 41.0) internal successors, (943), 23 states have internal predecessors, (943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:49:28,585 INFO L175 Difference]: Start difference. First operand has 59 places, 40 transitions, 185 flow. Second operand 22 states and 311 transitions. [2023-11-24 21:49:28,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 130 transitions, 715 flow [2023-11-24 21:49:28,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 130 transitions, 647 flow, removed 29 selfloop flow, removed 5 redundant places. [2023-11-24 21:49:28,595 INFO L231 Difference]: Finished difference. Result has 85 places, 50 transitions, 281 flow [2023-11-24 21:49:28,596 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=137, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=281, PETRI_PLACES=85, PETRI_TRANSITIONS=50} [2023-11-24 21:49:28,597 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 48 predicate places. [2023-11-24 21:49:28,597 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 50 transitions, 281 flow [2023-11-24 21:49:28,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 9.826086956521738) internal successors, (226), 23 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:49:28,598 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:49:28,598 INFO L208 CegarLoopForPetriNet]: trace histogram [20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:49:28,617 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a409f0e8-06a4-43ef-9806-14a26b73879e/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-24 21:49:28,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a409f0e8-06a4-43ef-9806-14a26b73879e/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 21:49:28,818 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-24 21:49:28,819 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:49:28,819 INFO L85 PathProgramCache]: Analyzing trace with hash 759071202, now seen corresponding path program 4 times [2023-11-24 21:49:28,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:49:28,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140798694] [2023-11-24 21:49:28,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:49:28,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:49:29,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:49:51,455 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:49:51,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:49:51,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140798694] [2023-11-24 21:49:51,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140798694] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 21:49:51,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [223499894] [2023-11-24 21:49:51,456 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-24 21:49:51,456 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 21:49:51,456 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a409f0e8-06a4-43ef-9806-14a26b73879e/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 21:49:51,457 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a409f0e8-06a4-43ef-9806-14a26b73879e/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 21:49:51,476 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a409f0e8-06a4-43ef-9806-14a26b73879e/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-24 21:49:51,906 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-24 21:49:51,906 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-24 21:49:51,915 INFO L262 TraceCheckSpWp]: Trace formula consists of 681 conjuncts, 147 conjunts are in the unsatisfiable core [2023-11-24 21:49:51,950 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:49:51,962 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 15 [2023-11-24 21:49:51,968 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2023-11-24 21:49:52,207 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 177 treesize of output 159 [2023-11-24 21:49:52,219 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 20 [2023-11-24 21:49:52,227 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 17 [2023-11-24 21:49:52,350 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 124 treesize of output 114 [2023-11-24 21:49:52,363 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 53 [2023-11-24 21:49:52,603 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 155 treesize of output 139 [2023-11-24 21:49:52,641 WARN L214 Elim1Store]: Array PQE input equivalent to false [2023-11-24 21:49:52,671 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 69 [2023-11-24 21:49:52,942 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 155 treesize of output 141 [2023-11-24 21:49:52,972 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 102 treesize of output 87 [2023-11-24 21:49:53,090 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 115 treesize of output 100 [2023-11-24 21:49:53,187 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-24 21:49:53,198 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 102 treesize of output 87 [2023-11-24 21:49:53,538 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 218 treesize of output 202 [2023-11-24 21:49:53,586 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 174 treesize of output 149 [2023-11-24 21:49:53,823 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-24 21:49:53,838 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 189 treesize of output 164 [2023-11-24 21:49:54,388 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 459 treesize of output 441 [2023-11-24 21:49:54,423 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-24 21:49:54,440 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 441 treesize of output 378