./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-atomic/read_write_lock-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 30e01a73 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf85a83-db7b-4a79-8cae-2e13f1ae7698/bin/uautomizer-verify-zZY32mL2XJ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf85a83-db7b-4a79-8cae-2e13f1ae7698/bin/uautomizer-verify-zZY32mL2XJ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf85a83-db7b-4a79-8cae-2e13f1ae7698/bin/uautomizer-verify-zZY32mL2XJ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf85a83-db7b-4a79-8cae-2e13f1ae7698/bin/uautomizer-verify-zZY32mL2XJ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-atomic/read_write_lock-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf85a83-db7b-4a79-8cae-2e13f1ae7698/bin/uautomizer-verify-zZY32mL2XJ/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf85a83-db7b-4a79-8cae-2e13f1ae7698/bin/uautomizer-verify-zZY32mL2XJ --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 8fab2e995569cc819974baee7d52d8d4bdabd2a2896c83fb3b8d07b44f394c5b --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:35:20,977 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:35:21,117 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf85a83-db7b-4a79-8cae-2e13f1ae7698/bin/uautomizer-verify-zZY32mL2XJ/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-23 21:35:21,129 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:35:21,130 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:35:21,181 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:35:21,183 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:35:21,184 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:35:21,185 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-23 21:35:21,190 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-23 21:35:21,191 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:35:21,191 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:35:21,192 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 21:35:21,194 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 21:35:21,194 INFO L153 SettingsManager]: * Use SBE=true [2023-11-23 21:35:21,195 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:35:21,195 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:35:21,196 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 21:35:21,196 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:35:21,197 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 21:35:21,197 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:35:21,198 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:35:21,198 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:35:21,198 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:35:21,199 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 21:35:21,199 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:35:21,200 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:35:21,200 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:35:21,201 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 21:35:21,201 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:35:21,203 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:35:21,203 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:35:21,203 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:35:21,204 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:35:21,204 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:35:21,204 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-23 21:35:21,204 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:35:21,205 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:35:21,205 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-23 21:35:21,205 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:35:21,205 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-23 21:35:21,206 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:35:21,206 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_faf85a83-db7b-4a79-8cae-2e13f1ae7698/bin/uautomizer-verify-zZY32mL2XJ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf85a83-db7b-4a79-8cae-2e13f1ae7698/bin/uautomizer-verify-zZY32mL2XJ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8fab2e995569cc819974baee7d52d8d4bdabd2a2896c83fb3b8d07b44f394c5b [2023-11-23 21:35:21,533 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:35:21,573 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:35:21,576 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:35:21,577 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:35:21,578 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:35:21,579 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf85a83-db7b-4a79-8cae-2e13f1ae7698/bin/uautomizer-verify-zZY32mL2XJ/../../sv-benchmarks/c/pthread-atomic/read_write_lock-1.i [2023-11-23 21:35:24,977 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:35:25,321 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:35:25,321 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf85a83-db7b-4a79-8cae-2e13f1ae7698/sv-benchmarks/c/pthread-atomic/read_write_lock-1.i [2023-11-23 21:35:25,343 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf85a83-db7b-4a79-8cae-2e13f1ae7698/bin/uautomizer-verify-zZY32mL2XJ/data/23ff02d88/637c0f43801641989f6b82643822e238/FLAGf218638ef [2023-11-23 21:35:25,360 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf85a83-db7b-4a79-8cae-2e13f1ae7698/bin/uautomizer-verify-zZY32mL2XJ/data/23ff02d88/637c0f43801641989f6b82643822e238 [2023-11-23 21:35:25,364 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:35:25,365 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:35:25,377 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:35:25,378 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:35:25,384 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:35:25,385 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:35:25" (1/1) ... [2023-11-23 21:35:25,386 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1edebe1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:35:25, skipping insertion in model container [2023-11-23 21:35:25,386 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:35:25" (1/1) ... [2023-11-23 21:35:25,436 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:35:25,626 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-23 21:35:25,808 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_faf85a83-db7b-4a79-8cae-2e13f1ae7698/sv-benchmarks/c/pthread-atomic/read_write_lock-1.i[31246,31259] [2023-11-23 21:35:25,823 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:35:25,836 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:35:25,856 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-23 21:35:25,884 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_faf85a83-db7b-4a79-8cae-2e13f1ae7698/sv-benchmarks/c/pthread-atomic/read_write_lock-1.i[31246,31259] [2023-11-23 21:35:25,891 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:35:25,928 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:35:25,929 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:35:25,929 WARN L675 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:35:25,938 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:35:25,938 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:35:25 WrapperNode [2023-11-23 21:35:25,939 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:35:25,940 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:35:25,940 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:35:25,941 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:35:25,949 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:35:25" (1/1) ... [2023-11-23 21:35:25,966 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:35:25" (1/1) ... [2023-11-23 21:35:25,996 INFO L138 Inliner]: procedures = 175, calls = 46, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 113 [2023-11-23 21:35:25,997 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:35:25,998 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:35:25,998 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:35:25,998 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:35:26,011 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:35:25" (1/1) ... [2023-11-23 21:35:26,012 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:35:25" (1/1) ... [2023-11-23 21:35:26,016 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:35:25" (1/1) ... [2023-11-23 21:35:26,033 INFO L189 HeapSplitter]: Split 10 memory accesses to 5 slices as follows [2, 2, 2, 2, 2] [2023-11-23 21:35:26,033 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:35:25" (1/1) ... [2023-11-23 21:35:26,034 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:35:25" (1/1) ... [2023-11-23 21:35:26,043 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:35:25" (1/1) ... [2023-11-23 21:35:26,045 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:35:25" (1/1) ... [2023-11-23 21:35:26,048 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:35:25" (1/1) ... [2023-11-23 21:35:26,050 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:35:25" (1/1) ... [2023-11-23 21:35:26,055 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:35:26,056 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:35:26,057 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:35:26,057 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:35:26,058 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:35:25" (1/1) ... [2023-11-23 21:35:26,065 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:35:26,084 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf85a83-db7b-4a79-8cae-2e13f1ae7698/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 21:35:26,099 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf85a83-db7b-4a79-8cae-2e13f1ae7698/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:35:26,127 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf85a83-db7b-4a79-8cae-2e13f1ae7698/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:35:26,155 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-23 21:35:26,156 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-23 21:35:26,158 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-23 21:35:26,159 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-23 21:35:26,159 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-23 21:35:26,159 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-23 21:35:26,159 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-23 21:35:26,160 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-23 21:35:26,160 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-23 21:35:26,160 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-23 21:35:26,161 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-23 21:35:26,161 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:35:26,161 INFO L130 BoogieDeclarations]: Found specification of procedure reader [2023-11-23 21:35:26,161 INFO L138 BoogieDeclarations]: Found implementation of procedure reader [2023-11-23 21:35:26,162 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 21:35:26,162 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 21:35:26,162 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-23 21:35:26,163 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-23 21:35:26,163 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-23 21:35:26,163 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-23 21:35:26,164 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-23 21:35:26,164 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-23 21:35:26,165 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:35:26,165 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:35:26,166 INFO L130 BoogieDeclarations]: Found specification of procedure writer [2023-11-23 21:35:26,166 INFO L138 BoogieDeclarations]: Found implementation of procedure writer [2023-11-23 21:35:26,192 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-23 21:35:26,413 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:35:26,422 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:35:26,727 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:35:26,980 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:35:26,980 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-23 21:35:26,981 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:35:26 BoogieIcfgContainer [2023-11-23 21:35:26,981 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:35:26,985 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:35:26,985 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:35:26,989 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:35:26,989 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:35:25" (1/3) ... [2023-11-23 21:35:26,990 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@479d34f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:35:26, skipping insertion in model container [2023-11-23 21:35:26,990 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:35:25" (2/3) ... [2023-11-23 21:35:26,991 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@479d34f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:35:26, skipping insertion in model container [2023-11-23 21:35:26,991 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:35:26" (3/3) ... [2023-11-23 21:35:26,993 INFO L112 eAbstractionObserver]: Analyzing ICFG read_write_lock-1.i [2023-11-23 21:35:27,003 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-23 21:35:27,017 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:35:27,017 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 21:35:27,018 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-23 21:35:27,126 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-11-23 21:35:27,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 66 places, 55 transitions, 138 flow [2023-11-23 21:35:27,217 INFO L124 PetriNetUnfolderBase]: 2/51 cut-off events. [2023-11-23 21:35:27,217 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-23 21:35:27,224 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68 conditions, 51 events. 2/51 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 103 event pairs, 0 based on Foata normal form. 0/47 useless extension candidates. Maximal degree in co-relation 47. Up to 2 conditions per place. [2023-11-23 21:35:27,224 INFO L82 GeneralOperation]: Start removeDead. Operand has 66 places, 55 transitions, 138 flow [2023-11-23 21:35:27,229 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 60 places, 49 transitions, 119 flow [2023-11-23 21:35:27,243 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:35:27,251 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;@24e1350c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:35:27,252 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-11-23 21:35:27,270 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-23 21:35:27,270 INFO L124 PetriNetUnfolderBase]: 1/32 cut-off events. [2023-11-23 21:35:27,270 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-23 21:35:27,271 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 21:35:27,271 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:35:27,272 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting readerErr0ASSERT_VIOLATIONERROR_FUNCTION === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-23 21:35:27,279 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:35:27,279 INFO L85 PathProgramCache]: Analyzing trace with hash 908592092, now seen corresponding path program 1 times [2023-11-23 21:35:27,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:35:27,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685336032] [2023-11-23 21:35:27,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:35:27,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:35:27,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:35:27,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:35:27,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:35:27,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685336032] [2023-11-23 21:35:27,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685336032] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:35:27,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:35:27,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-23 21:35:27,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690186989] [2023-11-23 21:35:27,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:35:27,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 21:35:27,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:35:27,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 21:35:27,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-23 21:35:27,897 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 55 [2023-11-23 21:35:27,901 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 49 transitions, 119 flow. Second operand has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 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) [2023-11-23 21:35:27,901 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 21:35:27,901 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 55 [2023-11-23 21:35:27,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 21:35:31,569 INFO L124 PetriNetUnfolderBase]: 16033/25893 cut-off events. [2023-11-23 21:35:31,570 INFO L125 PetriNetUnfolderBase]: For 2172/2172 co-relation queries the response was YES. [2023-11-23 21:35:31,645 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49693 conditions, 25893 events. 16033/25893 cut-off events. For 2172/2172 co-relation queries the response was YES. Maximal size of possible extension queue 1115. Compared 203913 event pairs, 1785 based on Foata normal form. 1382/26231 useless extension candidates. Maximal degree in co-relation 39553. Up to 6939 conditions per place. [2023-11-23 21:35:31,805 INFO L140 encePairwiseOnDemand]: 43/55 looper letters, 169 selfloop transitions, 29 changer transitions 8/217 dead transitions. [2023-11-23 21:35:31,805 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 217 transitions, 948 flow [2023-11-23 21:35:31,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-23 21:35:31,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-23 21:35:31,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 385 transitions. [2023-11-23 21:35:31,830 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6363636363636364 [2023-11-23 21:35:31,831 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 385 transitions. [2023-11-23 21:35:31,832 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 385 transitions. [2023-11-23 21:35:31,836 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 21:35:31,839 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 385 transitions. [2023-11-23 21:35:31,845 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 35.0) internal successors, (385), 11 states have internal predecessors, (385), 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) [2023-11-23 21:35:31,851 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 55.0) internal successors, (660), 12 states have internal predecessors, (660), 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) [2023-11-23 21:35:31,852 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 55.0) internal successors, (660), 12 states have internal predecessors, (660), 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) [2023-11-23 21:35:31,854 INFO L175 Difference]: Start difference. First operand has 60 places, 49 transitions, 119 flow. Second operand 11 states and 385 transitions. [2023-11-23 21:35:31,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 217 transitions, 948 flow [2023-11-23 21:35:31,928 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 217 transitions, 887 flow, removed 0 selfloop flow, removed 7 redundant places. [2023-11-23 21:35:31,935 INFO L231 Difference]: Finished difference. Result has 71 places, 78 transitions, 304 flow [2023-11-23 21:35:31,937 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=304, PETRI_PLACES=71, PETRI_TRANSITIONS=78} [2023-11-23 21:35:31,944 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 11 predicate places. [2023-11-23 21:35:31,944 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 78 transitions, 304 flow [2023-11-23 21:35:31,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 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) [2023-11-23 21:35:31,945 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 21:35:31,945 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:35:31,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 21:35:31,946 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting readerErr0ASSERT_VIOLATIONERROR_FUNCTION === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-23 21:35:31,947 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:35:31,947 INFO L85 PathProgramCache]: Analyzing trace with hash 44136906, now seen corresponding path program 1 times [2023-11-23 21:35:31,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:35:31,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691402615] [2023-11-23 21:35:31,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:35:31,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:35:32,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:35:32,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:35:32,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:35:32,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691402615] [2023-11-23 21:35:32,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691402615] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:35:32,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:35:32,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:35:32,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207005012] [2023-11-23 21:35:32,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:35:32,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:35:32,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:35:32,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:35:32,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:35:32,175 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 55 [2023-11-23 21:35:32,176 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 78 transitions, 304 flow. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:35:32,176 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 21:35:32,177 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 55 [2023-11-23 21:35:32,177 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 21:35:34,524 INFO L124 PetriNetUnfolderBase]: 9018/15851 cut-off events. [2023-11-23 21:35:34,525 INFO L125 PetriNetUnfolderBase]: For 2149/2462 co-relation queries the response was YES. [2023-11-23 21:35:34,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32595 conditions, 15851 events. 9018/15851 cut-off events. For 2149/2462 co-relation queries the response was YES. Maximal size of possible extension queue 833. Compared 131157 event pairs, 3792 based on Foata normal form. 658/15757 useless extension candidates. Maximal degree in co-relation 29225. Up to 6732 conditions per place. [2023-11-23 21:35:34,703 INFO L140 encePairwiseOnDemand]: 49/55 looper letters, 44 selfloop transitions, 4 changer transitions 0/97 dead transitions. [2023-11-23 21:35:34,706 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 97 transitions, 444 flow [2023-11-23 21:35:34,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:35:34,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-23 21:35:34,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 118 transitions. [2023-11-23 21:35:34,709 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7151515151515152 [2023-11-23 21:35:34,709 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 118 transitions. [2023-11-23 21:35:34,711 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 118 transitions. [2023-11-23 21:35:34,711 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 21:35:34,711 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 118 transitions. [2023-11-23 21:35:34,720 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 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) [2023-11-23 21:35:34,721 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 55.0) internal successors, (220), 4 states have internal predecessors, (220), 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) [2023-11-23 21:35:34,723 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 55.0) internal successors, (220), 4 states have internal predecessors, (220), 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) [2023-11-23 21:35:34,723 INFO L175 Difference]: Start difference. First operand has 71 places, 78 transitions, 304 flow. Second operand 3 states and 118 transitions. [2023-11-23 21:35:34,723 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 97 transitions, 444 flow [2023-11-23 21:35:34,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 97 transitions, 444 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-23 21:35:34,859 INFO L231 Difference]: Finished difference. Result has 74 places, 78 transitions, 320 flow [2023-11-23 21:35:34,859 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=304, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=320, PETRI_PLACES=74, PETRI_TRANSITIONS=78} [2023-11-23 21:35:34,860 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 14 predicate places. [2023-11-23 21:35:34,861 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 78 transitions, 320 flow [2023-11-23 21:35:34,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:35:34,861 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 21:35:34,861 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:35:34,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-23 21:35:34,862 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting readerErr0ASSERT_VIOLATIONERROR_FUNCTION === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-23 21:35:34,863 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:35:34,864 INFO L85 PathProgramCache]: Analyzing trace with hash 20064264, now seen corresponding path program 2 times [2023-11-23 21:35:34,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:35:34,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114495003] [2023-11-23 21:35:34,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:35:34,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:35:34,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:35:35,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:35:35,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:35:35,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114495003] [2023-11-23 21:35:35,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114495003] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:35:35,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:35:35,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:35:35,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828489766] [2023-11-23 21:35:35,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:35:35,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:35:35,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:35:35,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:35:35,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:35:35,092 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 55 [2023-11-23 21:35:35,092 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 78 transitions, 320 flow. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 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) [2023-11-23 21:35:35,093 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 21:35:35,093 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 55 [2023-11-23 21:35:35,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 21:35:36,808 INFO L124 PetriNetUnfolderBase]: 5764/11484 cut-off events. [2023-11-23 21:35:36,809 INFO L125 PetriNetUnfolderBase]: For 4443/4551 co-relation queries the response was YES. [2023-11-23 21:35:36,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24965 conditions, 11484 events. 5764/11484 cut-off events. For 4443/4551 co-relation queries the response was YES. Maximal size of possible extension queue 690. Compared 101730 event pairs, 1723 based on Foata normal form. 126/11156 useless extension candidates. Maximal degree in co-relation 21295. Up to 4105 conditions per place. [2023-11-23 21:35:36,903 INFO L140 encePairwiseOnDemand]: 48/55 looper letters, 59 selfloop transitions, 9 changer transitions 3/122 dead transitions. [2023-11-23 21:35:36,904 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 122 transitions, 576 flow [2023-11-23 21:35:36,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:35:36,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-23 21:35:36,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 169 transitions. [2023-11-23 21:35:36,906 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7681818181818182 [2023-11-23 21:35:36,906 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 169 transitions. [2023-11-23 21:35:36,907 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 169 transitions. [2023-11-23 21:35:36,907 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 21:35:36,907 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 169 transitions. [2023-11-23 21:35:36,908 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 42.25) internal successors, (169), 4 states have internal predecessors, (169), 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) [2023-11-23 21:35:36,909 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 55.0) internal successors, (275), 5 states have internal predecessors, (275), 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) [2023-11-23 21:35:36,910 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 55.0) internal successors, (275), 5 states have internal predecessors, (275), 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) [2023-11-23 21:35:36,910 INFO L175 Difference]: Start difference. First operand has 74 places, 78 transitions, 320 flow. Second operand 4 states and 169 transitions. [2023-11-23 21:35:36,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 122 transitions, 576 flow [2023-11-23 21:35:37,010 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 122 transitions, 564 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-23 21:35:37,014 INFO L231 Difference]: Finished difference. Result has 78 places, 84 transitions, 378 flow [2023-11-23 21:35:37,014 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=312, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=378, PETRI_PLACES=78, PETRI_TRANSITIONS=84} [2023-11-23 21:35:37,015 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 18 predicate places. [2023-11-23 21:35:37,015 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 84 transitions, 378 flow [2023-11-23 21:35:37,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 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) [2023-11-23 21:35:37,016 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 21:35:37,016 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:35:37,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-23 21:35:37,017 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting readerErr0ASSERT_VIOLATIONERROR_FUNCTION === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-23 21:35:37,018 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:35:37,018 INFO L85 PathProgramCache]: Analyzing trace with hash 823824437, now seen corresponding path program 1 times [2023-11-23 21:35:37,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:35:37,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816349764] [2023-11-23 21:35:37,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:35:37,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:35:37,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:35:37,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:35:37,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:35:37,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816349764] [2023-11-23 21:35:37,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816349764] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:35:37,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:35:37,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-23 21:35:37,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771009411] [2023-11-23 21:35:37,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:35:37,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 21:35:37,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:35:37,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 21:35:37,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-23 21:35:37,184 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 55 [2023-11-23 21:35:37,184 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 84 transitions, 378 flow. Second operand has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 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) [2023-11-23 21:35:37,184 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 21:35:37,184 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 55 [2023-11-23 21:35:37,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 21:35:40,940 INFO L124 PetriNetUnfolderBase]: 14627/23582 cut-off events. [2023-11-23 21:35:40,941 INFO L125 PetriNetUnfolderBase]: For 19604/19990 co-relation queries the response was YES. [2023-11-23 21:35:41,068 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60703 conditions, 23582 events. 14627/23582 cut-off events. For 19604/19990 co-relation queries the response was YES. Maximal size of possible extension queue 1101. Compared 174645 event pairs, 2450 based on Foata normal form. 254/23489 useless extension candidates. Maximal degree in co-relation 54697. Up to 5080 conditions per place. [2023-11-23 21:35:41,147 INFO L140 encePairwiseOnDemand]: 45/55 looper letters, 170 selfloop transitions, 55 changer transitions 54/296 dead transitions. [2023-11-23 21:35:41,147 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 296 transitions, 1800 flow [2023-11-23 21:35:41,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-23 21:35:41,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-23 21:35:41,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 374 transitions. [2023-11-23 21:35:41,151 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6181818181818182 [2023-11-23 21:35:41,152 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 374 transitions. [2023-11-23 21:35:41,152 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 374 transitions. [2023-11-23 21:35:41,153 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 21:35:41,153 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 374 transitions. [2023-11-23 21:35:41,155 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 34.0) internal successors, (374), 11 states have internal predecessors, (374), 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) [2023-11-23 21:35:41,158 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 55.0) internal successors, (660), 12 states have internal predecessors, (660), 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) [2023-11-23 21:35:41,158 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 55.0) internal successors, (660), 12 states have internal predecessors, (660), 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) [2023-11-23 21:35:41,159 INFO L175 Difference]: Start difference. First operand has 78 places, 84 transitions, 378 flow. Second operand 11 states and 374 transitions. [2023-11-23 21:35:41,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 296 transitions, 1800 flow [2023-11-23 21:35:41,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 296 transitions, 1800 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-23 21:35:41,698 INFO L231 Difference]: Finished difference. Result has 96 places, 126 transitions, 842 flow [2023-11-23 21:35:41,699 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=378, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=842, PETRI_PLACES=96, PETRI_TRANSITIONS=126} [2023-11-23 21:35:41,702 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 36 predicate places. [2023-11-23 21:35:41,703 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 126 transitions, 842 flow [2023-11-23 21:35:41,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 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) [2023-11-23 21:35:41,703 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 21:35:41,704 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] [2023-11-23 21:35:41,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-23 21:35:41,712 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting readerErr0ASSERT_VIOLATIONERROR_FUNCTION === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-23 21:35:41,715 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:35:41,716 INFO L85 PathProgramCache]: Analyzing trace with hash -421271771, now seen corresponding path program 1 times [2023-11-23 21:35:41,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:35:41,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317760349] [2023-11-23 21:35:41,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:35:41,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:35:41,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:35:41,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:35:41,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:35:41,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317760349] [2023-11-23 21:35:41,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317760349] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:35:41,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:35:41,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-23 21:35:41,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684043581] [2023-11-23 21:35:41,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:35:41,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 21:35:41,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:35:41,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 21:35:41,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-23 21:35:41,936 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 55 [2023-11-23 21:35:41,937 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 126 transitions, 842 flow. Second operand has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 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) [2023-11-23 21:35:41,937 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 21:35:41,937 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 55 [2023-11-23 21:35:41,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 21:35:45,357 INFO L124 PetriNetUnfolderBase]: 13149/21938 cut-off events. [2023-11-23 21:35:45,357 INFO L125 PetriNetUnfolderBase]: For 30539/30667 co-relation queries the response was YES. [2023-11-23 21:35:45,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64768 conditions, 21938 events. 13149/21938 cut-off events. For 30539/30667 co-relation queries the response was YES. Maximal size of possible extension queue 1031. Compared 168361 event pairs, 2370 based on Foata normal form. 240/22127 useless extension candidates. Maximal degree in co-relation 59442. Up to 5782 conditions per place. [2023-11-23 21:35:45,538 INFO L140 encePairwiseOnDemand]: 45/55 looper letters, 163 selfloop transitions, 62 changer transitions 12/254 dead transitions. [2023-11-23 21:35:45,538 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 254 transitions, 1862 flow [2023-11-23 21:35:45,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-23 21:35:45,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-23 21:35:45,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 323 transitions. [2023-11-23 21:35:45,542 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5872727272727273 [2023-11-23 21:35:45,542 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 323 transitions. [2023-11-23 21:35:45,542 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 323 transitions. [2023-11-23 21:35:45,543 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 21:35:45,543 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 323 transitions. [2023-11-23 21:35:45,544 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 32.3) internal successors, (323), 10 states have internal predecessors, (323), 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) [2023-11-23 21:35:45,547 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 55.0) internal successors, (605), 11 states have internal predecessors, (605), 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) [2023-11-23 21:35:45,547 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 55.0) internal successors, (605), 11 states have internal predecessors, (605), 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) [2023-11-23 21:35:45,548 INFO L175 Difference]: Start difference. First operand has 96 places, 126 transitions, 842 flow. Second operand 10 states and 323 transitions. [2023-11-23 21:35:45,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 254 transitions, 1862 flow [2023-11-23 21:35:46,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 254 transitions, 1840 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-11-23 21:35:46,343 INFO L231 Difference]: Finished difference. Result has 109 places, 137 transitions, 1117 flow [2023-11-23 21:35:46,343 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=821, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1117, PETRI_PLACES=109, PETRI_TRANSITIONS=137} [2023-11-23 21:35:46,344 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 49 predicate places. [2023-11-23 21:35:46,345 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 137 transitions, 1117 flow [2023-11-23 21:35:46,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 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) [2023-11-23 21:35:46,345 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 21:35:46,346 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] [2023-11-23 21:35:46,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-23 21:35:46,346 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting readerErr0ASSERT_VIOLATIONERROR_FUNCTION === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-23 21:35:46,347 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:35:46,347 INFO L85 PathProgramCache]: Analyzing trace with hash 965424259, now seen corresponding path program 1 times [2023-11-23 21:35:46,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:35:46,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270624477] [2023-11-23 21:35:46,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:35:46,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:35:46,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:35:46,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:35:46,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:35:46,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270624477] [2023-11-23 21:35:46,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270624477] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:35:46,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:35:46,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-23 21:35:46,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727153081] [2023-11-23 21:35:46,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:35:46,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 21:35:46,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:35:46,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 21:35:46,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-23 21:35:46,549 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 55 [2023-11-23 21:35:46,550 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 137 transitions, 1117 flow. Second operand has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 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) [2023-11-23 21:35:46,550 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 21:35:46,550 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 55 [2023-11-23 21:35:46,550 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 21:35:50,502 INFO L124 PetriNetUnfolderBase]: 13941/23021 cut-off events. [2023-11-23 21:35:50,502 INFO L125 PetriNetUnfolderBase]: For 40934/41106 co-relation queries the response was YES. [2023-11-23 21:35:50,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71345 conditions, 23021 events. 13941/23021 cut-off events. For 40934/41106 co-relation queries the response was YES. Maximal size of possible extension queue 1091. Compared 175090 event pairs, 2736 based on Foata normal form. 300/23189 useless extension candidates. Maximal degree in co-relation 65031. Up to 5485 conditions per place. [2023-11-23 21:35:50,691 INFO L140 encePairwiseOnDemand]: 45/55 looper letters, 169 selfloop transitions, 68 changer transitions 31/291 dead transitions. [2023-11-23 21:35:50,691 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 291 transitions, 2309 flow [2023-11-23 21:35:50,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-23 21:35:50,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-23 21:35:50,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 344 transitions. [2023-11-23 21:35:50,694 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6254545454545455 [2023-11-23 21:35:50,694 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 344 transitions. [2023-11-23 21:35:50,695 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 344 transitions. [2023-11-23 21:35:50,695 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 21:35:50,695 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 344 transitions. [2023-11-23 21:35:50,697 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 34.4) internal successors, (344), 10 states have internal predecessors, (344), 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) [2023-11-23 21:35:50,699 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 55.0) internal successors, (605), 11 states have internal predecessors, (605), 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) [2023-11-23 21:35:50,699 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 55.0) internal successors, (605), 11 states have internal predecessors, (605), 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) [2023-11-23 21:35:50,700 INFO L175 Difference]: Start difference. First operand has 109 places, 137 transitions, 1117 flow. Second operand 10 states and 344 transitions. [2023-11-23 21:35:50,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 291 transitions, 2309 flow [2023-11-23 21:35:51,343 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 291 transitions, 2300 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-11-23 21:35:51,349 INFO L231 Difference]: Finished difference. Result has 122 places, 151 transitions, 1468 flow [2023-11-23 21:35:51,350 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=1108, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1468, PETRI_PLACES=122, PETRI_TRANSITIONS=151} [2023-11-23 21:35:51,351 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 62 predicate places. [2023-11-23 21:35:51,351 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 151 transitions, 1468 flow [2023-11-23 21:35:51,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 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) [2023-11-23 21:35:51,351 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 21:35:51,352 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, 1, 1, 1, 1, 1, 1] [2023-11-23 21:35:51,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-23 21:35:51,352 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting readerErr0ASSERT_VIOLATIONERROR_FUNCTION === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-23 21:35:51,353 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:35:51,353 INFO L85 PathProgramCache]: Analyzing trace with hash -960330179, now seen corresponding path program 1 times [2023-11-23 21:35:51,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:35:51,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140334749] [2023-11-23 21:35:51,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:35:51,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:35:51,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:35:51,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:35:51,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:35:51,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140334749] [2023-11-23 21:35:51,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140334749] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:35:51,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:35:51,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 21:35:51,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153709842] [2023-11-23 21:35:51,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:35:51,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 21:35:51,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:35:51,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 21:35:51,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:35:51,477 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 55 [2023-11-23 21:35:51,478 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 151 transitions, 1468 flow. Second operand has 5 states, 5 states have (on average 26.8) internal successors, (134), 5 states have internal predecessors, (134), 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) [2023-11-23 21:35:51,478 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 21:35:51,478 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 55 [2023-11-23 21:35:51,478 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 21:35:53,310 INFO L124 PetriNetUnfolderBase]: 5092/11594 cut-off events. [2023-11-23 21:35:53,310 INFO L125 PetriNetUnfolderBase]: For 24063/24403 co-relation queries the response was YES. [2023-11-23 21:35:53,388 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36585 conditions, 11594 events. 5092/11594 cut-off events. For 24063/24403 co-relation queries the response was YES. Maximal size of possible extension queue 673. Compared 112852 event pairs, 1583 based on Foata normal form. 444/11862 useless extension candidates. Maximal degree in co-relation 36010. Up to 3010 conditions per place. [2023-11-23 21:35:53,409 INFO L140 encePairwiseOnDemand]: 48/55 looper letters, 50 selfloop transitions, 8 changer transitions 36/168 dead transitions. [2023-11-23 21:35:53,409 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 168 transitions, 1336 flow [2023-11-23 21:35:53,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 21:35:53,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-23 21:35:53,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 197 transitions. [2023-11-23 21:35:53,411 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7163636363636363 [2023-11-23 21:35:53,412 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 197 transitions. [2023-11-23 21:35:53,412 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 197 transitions. [2023-11-23 21:35:53,412 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 21:35:53,412 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 197 transitions. [2023-11-23 21:35:53,413 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 39.4) internal successors, (197), 5 states have internal predecessors, (197), 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) [2023-11-23 21:35:53,414 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 55.0) internal successors, (330), 6 states have internal predecessors, (330), 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) [2023-11-23 21:35:53,415 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 55.0) internal successors, (330), 6 states have internal predecessors, (330), 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) [2023-11-23 21:35:53,415 INFO L175 Difference]: Start difference. First operand has 122 places, 151 transitions, 1468 flow. Second operand 5 states and 197 transitions. [2023-11-23 21:35:53,415 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 168 transitions, 1336 flow [2023-11-23 21:35:53,719 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 168 transitions, 1248 flow, removed 7 selfloop flow, removed 6 redundant places. [2023-11-23 21:35:53,723 INFO L231 Difference]: Finished difference. Result has 121 places, 106 transitions, 810 flow [2023-11-23 21:35:53,723 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=983, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=810, PETRI_PLACES=121, PETRI_TRANSITIONS=106} [2023-11-23 21:35:53,724 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 61 predicate places. [2023-11-23 21:35:53,724 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 106 transitions, 810 flow [2023-11-23 21:35:53,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.8) internal successors, (134), 5 states have internal predecessors, (134), 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) [2023-11-23 21:35:53,725 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 21:35:53,725 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, 1, 1, 1, 1, 1, 1] [2023-11-23 21:35:53,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-23 21:35:53,726 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting readerErr0ASSERT_VIOLATIONERROR_FUNCTION === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-23 21:35:53,726 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:35:53,726 INFO L85 PathProgramCache]: Analyzing trace with hash -1397873173, now seen corresponding path program 2 times [2023-11-23 21:35:53,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:35:53,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778646679] [2023-11-23 21:35:53,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:35:53,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:35:53,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:35:53,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:35:53,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:35:53,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778646679] [2023-11-23 21:35:53,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778646679] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:35:53,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:35:53,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 21:35:53,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440165515] [2023-11-23 21:35:53,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:35:53,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 21:35:53,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:35:53,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 21:35:53,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:35:53,849 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 55 [2023-11-23 21:35:53,850 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 106 transitions, 810 flow. Second operand has 5 states, 5 states have (on average 26.8) internal successors, (134), 5 states have internal predecessors, (134), 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) [2023-11-23 21:35:53,850 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 21:35:53,850 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 55 [2023-11-23 21:35:53,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 21:35:54,779 INFO L124 PetriNetUnfolderBase]: 2471/5627 cut-off events. [2023-11-23 21:35:54,780 INFO L125 PetriNetUnfolderBase]: For 11425/11431 co-relation queries the response was YES. [2023-11-23 21:35:54,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18150 conditions, 5627 events. 2471/5627 cut-off events. For 11425/11431 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 46316 event pairs, 951 based on Foata normal form. 60/5629 useless extension candidates. Maximal degree in co-relation 18120. Up to 1754 conditions per place. [2023-11-23 21:35:54,821 INFO L140 encePairwiseOnDemand]: 48/55 looper letters, 0 selfloop transitions, 0 changer transitions 101/101 dead transitions. [2023-11-23 21:35:54,821 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 101 transitions, 646 flow [2023-11-23 21:35:54,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 21:35:54,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-23 21:35:54,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 187 transitions. [2023-11-23 21:35:54,824 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.68 [2023-11-23 21:35:54,824 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 187 transitions. [2023-11-23 21:35:54,824 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 187 transitions. [2023-11-23 21:35:54,824 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 21:35:54,825 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 187 transitions. [2023-11-23 21:35:54,826 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 37.4) internal successors, (187), 5 states have internal predecessors, (187), 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) [2023-11-23 21:35:54,827 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 55.0) internal successors, (330), 6 states have internal predecessors, (330), 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) [2023-11-23 21:35:54,827 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 55.0) internal successors, (330), 6 states have internal predecessors, (330), 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) [2023-11-23 21:35:54,828 INFO L175 Difference]: Start difference. First operand has 121 places, 106 transitions, 810 flow. Second operand 5 states and 187 transitions. [2023-11-23 21:35:54,828 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 101 transitions, 646 flow [2023-11-23 21:35:54,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 101 transitions, 542 flow, removed 12 selfloop flow, removed 20 redundant places. [2023-11-23 21:35:54,917 INFO L231 Difference]: Finished difference. Result has 92 places, 0 transitions, 0 flow [2023-11-23 21:35:54,917 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=332, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=92, PETRI_TRANSITIONS=0} [2023-11-23 21:35:54,918 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 32 predicate places. [2023-11-23 21:35:54,918 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 0 transitions, 0 flow [2023-11-23 21:35:54,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.8) internal successors, (134), 5 states have internal predecessors, (134), 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) [2023-11-23 21:35:54,921 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr0ASSERT_VIOLATIONERROR_FUNCTION (6 of 7 remaining) [2023-11-23 21:35:54,925 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 7 remaining) [2023-11-23 21:35:54,925 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 7 remaining) [2023-11-23 21:35:54,925 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 7 remaining) [2023-11-23 21:35:54,926 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 7 remaining) [2023-11-23 21:35:54,926 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 7 remaining) [2023-11-23 21:35:54,926 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2023-11-23 21:35:54,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-23 21:35:54,927 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1] [2023-11-23 21:35:54,933 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-23 21:35:54,934 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-23 21:35:54,940 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 09:35:54 BasicIcfg [2023-11-23 21:35:54,940 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-23 21:35:54,941 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-23 21:35:54,941 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-23 21:35:54,941 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-23 21:35:54,942 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:35:26" (3/4) ... [2023-11-23 21:35:54,944 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-23 21:35:54,947 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure reader [2023-11-23 21:35:54,948 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure writer [2023-11-23 21:35:54,953 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 49 nodes and edges [2023-11-23 21:35:54,953 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2023-11-23 21:35:54,954 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-23 21:35:54,954 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-23 21:35:55,048 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf85a83-db7b-4a79-8cae-2e13f1ae7698/bin/uautomizer-verify-zZY32mL2XJ/witness.graphml [2023-11-23 21:35:55,048 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf85a83-db7b-4a79-8cae-2e13f1ae7698/bin/uautomizer-verify-zZY32mL2XJ/witness.yml [2023-11-23 21:35:55,049 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-23 21:35:55,049 INFO L158 Benchmark]: Toolchain (without parser) took 29684.10ms. Allocated memory was 127.9MB in the beginning and 10.3GB in the end (delta: 10.2GB). Free memory was 95.2MB in the beginning and 9.1GB in the end (delta: -9.0GB). Peak memory consumption was 1.2GB. Max. memory is 16.1GB. [2023-11-23 21:35:55,050 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 127.9MB. Free memory is still 102.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 21:35:55,050 INFO L158 Benchmark]: CACSL2BoogieTranslator took 561.80ms. Allocated memory is still 127.9MB. Free memory was 94.7MB in the beginning and 74.7MB in the end (delta: 20.0MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-23 21:35:55,051 INFO L158 Benchmark]: Boogie Procedure Inliner took 57.06ms. Allocated memory is still 127.9MB. Free memory was 74.2MB in the beginning and 72.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 21:35:55,051 INFO L158 Benchmark]: Boogie Preprocessor took 57.75ms. Allocated memory is still 127.9MB. Free memory was 72.1MB in the beginning and 70.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 21:35:55,052 INFO L158 Benchmark]: RCFGBuilder took 925.10ms. Allocated memory was 127.9MB in the beginning and 163.6MB in the end (delta: 35.7MB). Free memory was 70.0MB in the beginning and 133.0MB in the end (delta: -62.9MB). Peak memory consumption was 37.3MB. Max. memory is 16.1GB. [2023-11-23 21:35:55,052 INFO L158 Benchmark]: TraceAbstraction took 27955.78ms. Allocated memory was 163.6MB in the beginning and 10.3GB in the end (delta: 10.1GB). Free memory was 133.0MB in the beginning and 9.1GB in the end (delta: -8.9GB). Peak memory consumption was 1.2GB. Max. memory is 16.1GB. [2023-11-23 21:35:55,053 INFO L158 Benchmark]: Witness Printer took 107.92ms. Allocated memory is still 10.3GB. Free memory was 9.1GB in the beginning and 9.1GB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-23 21:35:55,054 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 127.9MB. Free memory is still 102.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 561.80ms. Allocated memory is still 127.9MB. Free memory was 94.7MB in the beginning and 74.7MB in the end (delta: 20.0MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 57.06ms. Allocated memory is still 127.9MB. Free memory was 74.2MB in the beginning and 72.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 57.75ms. Allocated memory is still 127.9MB. Free memory was 72.1MB in the beginning and 70.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 925.10ms. Allocated memory was 127.9MB in the beginning and 163.6MB in the end (delta: 35.7MB). Free memory was 70.0MB in the beginning and 133.0MB in the end (delta: -62.9MB). Peak memory consumption was 37.3MB. Max. memory is 16.1GB. * TraceAbstraction took 27955.78ms. Allocated memory was 163.6MB in the beginning and 10.3GB in the end (delta: 10.1GB). Free memory was 133.0MB in the beginning and 9.1GB in the end (delta: -8.9GB). Peak memory consumption was 1.2GB. Max. memory is 16.1GB. * Witness Printer took 107.92ms. Allocated memory is still 10.3GB. Free memory was 9.1GB in the beginning and 9.1GB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 739]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 76 locations, 7 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 27.8s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 25.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 809 SdHoareTripleChecker+Valid, 2.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 769 mSDsluCounter, 173 SdHoareTripleChecker+Invalid, 2.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 129 mSDsCounter, 33 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2232 IncrementalHoareTripleChecker+Invalid, 2265 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 33 mSolverCounterUnsat, 44 mSDtfsCounter, 2232 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 64 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1468occurred in iteration=6, InterpolantAutomatonStates: 59, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 152 NumberOfCodeBlocks, 152 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 144 ConstructedInterpolants, 0 QuantifiedInterpolants, 300 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-23 21:35:55,090 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf85a83-db7b-4a79-8cae-2e13f1ae7698/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE