./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-atomic/lamport.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cf1a7837 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_f7a87fde-75eb-4aeb-9a23-5dc1aa0dce7e/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a87fde-75eb-4aeb-9a23-5dc1aa0dce7e/bin/uautomizer-verify-uTZkv6EMXl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a87fde-75eb-4aeb-9a23-5dc1aa0dce7e/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a87fde-75eb-4aeb-9a23-5dc1aa0dce7e/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-atomic/lamport.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a87fde-75eb-4aeb-9a23-5dc1aa0dce7e/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a87fde-75eb-4aeb-9a23-5dc1aa0dce7e/bin/uautomizer-verify-uTZkv6EMXl --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 c35b909c90b92e30d40b0275e3d226db26dbebaf39dc73a31d7e72eee871d214 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:06:35,905 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:06:36,026 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a87fde-75eb-4aeb-9a23-5dc1aa0dce7e/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-12 02:06:36,032 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:06:36,033 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:06:36,070 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:06:36,072 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:06:36,073 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:06:36,074 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:06:36,079 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:06:36,080 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:06:36,080 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:06:36,081 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:06:36,083 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:06:36,083 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 02:06:36,084 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:06:36,084 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:06:36,085 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:06:36,085 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:06:36,086 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 02:06:36,086 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:06:36,087 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 02:06:36,087 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:06:36,088 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 02:06:36,088 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:06:36,089 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:06:36,090 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:06:36,090 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:06:36,091 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:06:36,091 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:06:36,093 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:06:36,093 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 02:06:36,094 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:06:36,094 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:06:36,094 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:06:36,095 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 02:06:36,095 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:06:36,095 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:06:36,095 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:06:36,096 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_f7a87fde-75eb-4aeb-9a23-5dc1aa0dce7e/bin/uautomizer-verify-uTZkv6EMXl/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a87fde-75eb-4aeb-9a23-5dc1aa0dce7e/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c35b909c90b92e30d40b0275e3d226db26dbebaf39dc73a31d7e72eee871d214 [2023-11-12 02:06:36,386 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:06:36,410 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:06:36,413 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:06:36,415 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:06:36,415 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:06:36,417 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a87fde-75eb-4aeb-9a23-5dc1aa0dce7e/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/pthread-atomic/lamport.i [2023-11-12 02:06:39,536 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:06:39,825 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:06:39,826 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a87fde-75eb-4aeb-9a23-5dc1aa0dce7e/sv-benchmarks/c/pthread-atomic/lamport.i [2023-11-12 02:06:39,846 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a87fde-75eb-4aeb-9a23-5dc1aa0dce7e/bin/uautomizer-verify-uTZkv6EMXl/data/ed6fdc442/1c1aa1ce384c4cd397f79df65299ff34/FLAG20f4ea7e7 [2023-11-12 02:06:39,862 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a87fde-75eb-4aeb-9a23-5dc1aa0dce7e/bin/uautomizer-verify-uTZkv6EMXl/data/ed6fdc442/1c1aa1ce384c4cd397f79df65299ff34 [2023-11-12 02:06:39,865 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:06:39,867 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:06:39,868 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:06:39,869 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:06:39,883 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:06:39,884 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:06:39" (1/1) ... [2023-11-12 02:06:39,885 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5116940 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:06:39, skipping insertion in model container [2023-11-12 02:06:39,885 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:06:39" (1/1) ... [2023-11-12 02:06:39,959 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:06:40,135 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-12 02:06:40,379 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_f7a87fde-75eb-4aeb-9a23-5dc1aa0dce7e/sv-benchmarks/c/pthread-atomic/lamport.i[32156,32169] [2023-11-12 02:06:40,392 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_f7a87fde-75eb-4aeb-9a23-5dc1aa0dce7e/sv-benchmarks/c/pthread-atomic/lamport.i[34083,34096] [2023-11-12 02:06:40,404 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:06:40,421 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:06:40,450 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-12 02:06:40,490 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_f7a87fde-75eb-4aeb-9a23-5dc1aa0dce7e/sv-benchmarks/c/pthread-atomic/lamport.i[32156,32169] [2023-11-12 02:06:40,510 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_f7a87fde-75eb-4aeb-9a23-5dc1aa0dce7e/sv-benchmarks/c/pthread-atomic/lamport.i[34083,34096] [2023-11-12 02:06:40,515 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:06:40,566 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:06:40,566 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:06:40,566 WARN L672 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:06:40,575 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:06:40,576 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:06:40 WrapperNode [2023-11-12 02:06:40,576 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:06:40,578 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:06:40,579 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:06:40,579 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:06:40,588 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:06:40" (1/1) ... [2023-11-12 02:06:40,625 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:06:40" (1/1) ... [2023-11-12 02:06:40,651 INFO L138 Inliner]: procedures = 171, calls = 83, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 43 [2023-11-12 02:06:40,651 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:06:40,652 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:06:40,652 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:06:40,653 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:06:40,663 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:06:40" (1/1) ... [2023-11-12 02:06:40,663 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:06:40" (1/1) ... [2023-11-12 02:06:40,679 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:06:40" (1/1) ... [2023-11-12 02:06:40,679 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:06:40" (1/1) ... [2023-11-12 02:06:40,687 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:06:40" (1/1) ... [2023-11-12 02:06:40,709 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:06:40" (1/1) ... [2023-11-12 02:06:40,711 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:06:40" (1/1) ... [2023-11-12 02:06:40,713 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:06:40" (1/1) ... [2023-11-12 02:06:40,716 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:06:40,721 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:06:40,722 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:06:40,722 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:06:40,724 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:06:40" (1/1) ... [2023-11-12 02:06:40,732 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:06:40,747 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a87fde-75eb-4aeb-9a23-5dc1aa0dce7e/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:06:40,765 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a87fde-75eb-4aeb-9a23-5dc1aa0dce7e/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:06:40,782 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a87fde-75eb-4aeb-9a23-5dc1aa0dce7e/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:06:40,815 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 02:06:40,815 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2023-11-12 02:06:40,815 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2023-11-12 02:06:40,816 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-11-12 02:06:40,818 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-11-12 02:06:40,819 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 02:06:40,819 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-12 02:06:40,819 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:06:40,819 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 02:06:40,819 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 02:06:40,819 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 02:06:40,820 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-12 02:06:40,820 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:06:40,820 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:06:40,822 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-12 02:06:41,055 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:06:41,064 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:06:41,305 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:06:41,314 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:06:41,314 INFO L302 CfgBuilder]: Removed 8 assume(true) statements. [2023-11-12 02:06:41,317 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:06:41 BoogieIcfgContainer [2023-11-12 02:06:41,317 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:06:41,320 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:06:41,320 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:06:41,324 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:06:41,324 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:06:39" (1/3) ... [2023-11-12 02:06:41,325 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16ac1fbb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:06:41, skipping insertion in model container [2023-11-12 02:06:41,325 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:06:40" (2/3) ... [2023-11-12 02:06:41,326 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16ac1fbb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:06:41, skipping insertion in model container [2023-11-12 02:06:41,326 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:06:41" (3/3) ... [2023-11-12 02:06:41,327 INFO L112 eAbstractionObserver]: Analyzing ICFG lamport.i [2023-11-12 02:06:41,337 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-12 02:06:41,348 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:06:41,348 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-12 02:06:41,349 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-12 02:06:41,471 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-12 02:06:41,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 114 places, 131 transitions, 276 flow [2023-11-12 02:06:41,621 INFO L124 PetriNetUnfolderBase]: 24/129 cut-off events. [2023-11-12 02:06:41,621 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-12 02:06:41,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 138 conditions, 129 events. 24/129 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 264 event pairs, 0 based on Foata normal form. 0/103 useless extension candidates. Maximal degree in co-relation 99. Up to 5 conditions per place. [2023-11-12 02:06:41,629 INFO L82 GeneralOperation]: Start removeDead. Operand has 114 places, 131 transitions, 276 flow [2023-11-12 02:06:41,635 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 102 places, 119 transitions, 247 flow [2023-11-12 02:06:41,639 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-12 02:06:41,650 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 102 places, 119 transitions, 247 flow [2023-11-12 02:06:41,654 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 102 places, 119 transitions, 247 flow [2023-11-12 02:06:41,654 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 102 places, 119 transitions, 247 flow [2023-11-12 02:06:41,684 INFO L124 PetriNetUnfolderBase]: 24/119 cut-off events. [2023-11-12 02:06:41,684 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-12 02:06:41,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 127 conditions, 119 events. 24/119 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 260 event pairs, 0 based on Foata normal form. 0/93 useless extension candidates. Maximal degree in co-relation 99. Up to 5 conditions per place. [2023-11-12 02:06:41,692 INFO L119 LiptonReduction]: Number of co-enabled transitions 5192 [2023-11-12 02:06:43,965 INFO L134 LiptonReduction]: Checked pairs total: 14303 [2023-11-12 02:06:43,966 INFO L136 LiptonReduction]: Total number of compositions: 70 [2023-11-12 02:06:43,999 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:06:44,006 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;@1df2e137, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:06:44,006 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-11-12 02:06:44,010 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-12 02:06:44,010 INFO L124 PetriNetUnfolderBase]: 2/10 cut-off events. [2023-11-12 02:06:44,011 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:06:44,011 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:06:44,011 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-12 02:06:44,012 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-12 02:06:44,018 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:06:44,018 INFO L85 PathProgramCache]: Analyzing trace with hash 16953899, now seen corresponding path program 1 times [2023-11-12 02:06:44,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:06:44,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212240563] [2023-11-12 02:06:44,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:06:44,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:06:44,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:06:44,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:06:44,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:06:44,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212240563] [2023-11-12 02:06:44,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212240563] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:06:44,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:06:44,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:06:44,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106604321] [2023-11-12 02:06:44,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:06:44,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-12 02:06:44,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:06:44,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-12 02:06:44,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 02:06:44,258 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 201 [2023-11-12 02:06:44,260 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 64 transitions, 137 flow. Second operand has 2 states, 2 states have (on average 117.0) internal successors, (234), 2 states have internal predecessors, (234), 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) [2023-11-12 02:06:44,261 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:06:44,261 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 201 [2023-11-12 02:06:44,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:06:44,536 INFO L124 PetriNetUnfolderBase]: 832/1381 cut-off events. [2023-11-12 02:06:44,536 INFO L125 PetriNetUnfolderBase]: For 40/40 co-relation queries the response was YES. [2023-11-12 02:06:44,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2603 conditions, 1381 events. 832/1381 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 6790 event pairs, 432 based on Foata normal form. 47/987 useless extension candidates. Maximal degree in co-relation 2454. Up to 1184 conditions per place. [2023-11-12 02:06:44,561 INFO L140 encePairwiseOnDemand]: 195/201 looper letters, 39 selfloop transitions, 0 changer transitions 0/58 dead transitions. [2023-11-12 02:06:44,561 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 58 transitions, 203 flow [2023-11-12 02:06:44,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-12 02:06:44,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-12 02:06:44,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 275 transitions. [2023-11-12 02:06:44,590 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6840796019900498 [2023-11-12 02:06:44,591 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 275 transitions. [2023-11-12 02:06:44,592 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 275 transitions. [2023-11-12 02:06:44,598 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:06:44,601 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 275 transitions. [2023-11-12 02:06:44,606 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 137.5) internal successors, (275), 2 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) [2023-11-12 02:06:44,613 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 201.0) internal successors, (603), 3 states have internal predecessors, (603), 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) [2023-11-12 02:06:44,614 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 201.0) internal successors, (603), 3 states have internal predecessors, (603), 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) [2023-11-12 02:06:44,617 INFO L175 Difference]: Start difference. First operand has 53 places, 64 transitions, 137 flow. Second operand 2 states and 275 transitions. [2023-11-12 02:06:44,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 58 transitions, 203 flow [2023-11-12 02:06:44,621 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 58 transitions, 198 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-12 02:06:44,625 INFO L231 Difference]: Finished difference. Result has 51 places, 58 transitions, 120 flow [2023-11-12 02:06:44,627 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=201, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=120, PETRI_PLACES=51, PETRI_TRANSITIONS=58} [2023-11-12 02:06:44,636 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, -2 predicate places. [2023-11-12 02:06:44,636 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 58 transitions, 120 flow [2023-11-12 02:06:44,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 117.0) internal successors, (234), 2 states have internal predecessors, (234), 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) [2023-11-12 02:06:44,637 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:06:44,637 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:06:44,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 02:06:44,638 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-12 02:06:44,639 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:06:44,639 INFO L85 PathProgramCache]: Analyzing trace with hash -1518163041, now seen corresponding path program 1 times [2023-11-12 02:06:44,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:06:44,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199127558] [2023-11-12 02:06:44,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:06:44,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:06:44,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:06:44,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:06:44,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:06:44,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199127558] [2023-11-12 02:06:44,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199127558] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:06:44,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:06:44,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:06:44,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978645362] [2023-11-12 02:06:44,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:06:44,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:06:44,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:06:44,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:06:44,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:06:44,879 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 201 [2023-11-12 02:06:44,879 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 58 transitions, 120 flow. Second operand has 3 states, 3 states have (on average 112.33333333333333) internal successors, (337), 3 states have internal predecessors, (337), 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) [2023-11-12 02:06:44,880 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:06:44,880 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 201 [2023-11-12 02:06:44,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:06:45,127 INFO L124 PetriNetUnfolderBase]: 865/1480 cut-off events. [2023-11-12 02:06:45,128 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2023-11-12 02:06:45,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2758 conditions, 1480 events. 865/1480 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 7575 event pairs, 309 based on Foata normal form. 26/1061 useless extension candidates. Maximal degree in co-relation 2755. Up to 896 conditions per place. [2023-11-12 02:06:45,138 INFO L140 encePairwiseOnDemand]: 193/201 looper letters, 55 selfloop transitions, 5 changer transitions 1/78 dead transitions. [2023-11-12 02:06:45,139 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 78 transitions, 283 flow [2023-11-12 02:06:45,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:06:45,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:06:45,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 394 transitions. [2023-11-12 02:06:45,142 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6533996683250415 [2023-11-12 02:06:45,142 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 394 transitions. [2023-11-12 02:06:45,142 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 394 transitions. [2023-11-12 02:06:45,143 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:06:45,143 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 394 transitions. [2023-11-12 02:06:45,145 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 131.33333333333334) internal successors, (394), 3 states have internal predecessors, (394), 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) [2023-11-12 02:06:45,148 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 201.0) internal successors, (804), 4 states have internal predecessors, (804), 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) [2023-11-12 02:06:45,149 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 201.0) internal successors, (804), 4 states have internal predecessors, (804), 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) [2023-11-12 02:06:45,149 INFO L175 Difference]: Start difference. First operand has 51 places, 58 transitions, 120 flow. Second operand 3 states and 394 transitions. [2023-11-12 02:06:45,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 78 transitions, 283 flow [2023-11-12 02:06:45,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 78 transitions, 283 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-12 02:06:45,152 INFO L231 Difference]: Finished difference. Result has 55 places, 60 transitions, 154 flow [2023-11-12 02:06:45,153 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=201, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=154, PETRI_PLACES=55, PETRI_TRANSITIONS=60} [2023-11-12 02:06:45,153 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 2 predicate places. [2023-11-12 02:06:45,154 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 60 transitions, 154 flow [2023-11-12 02:06:45,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 112.33333333333333) internal successors, (337), 3 states have internal predecessors, (337), 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) [2023-11-12 02:06:45,155 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:06:45,155 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:06:45,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 02:06:45,155 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr2Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-12 02:06:45,156 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:06:45,156 INFO L85 PathProgramCache]: Analyzing trace with hash 437152145, now seen corresponding path program 1 times [2023-11-12 02:06:45,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:06:45,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179109320] [2023-11-12 02:06:45,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:06:45,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:06:45,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:06:45,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:06:45,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:06:45,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179109320] [2023-11-12 02:06:45,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179109320] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:06:45,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:06:45,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:06:45,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081153024] [2023-11-12 02:06:45,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:06:45,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:06:45,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:06:45,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:06:45,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:06:45,240 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 201 [2023-11-12 02:06:45,240 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 60 transitions, 154 flow. Second operand has 3 states, 3 states have (on average 113.0) internal successors, (339), 3 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:06:45,241 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:06:45,241 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 201 [2023-11-12 02:06:45,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:06:45,476 INFO L124 PetriNetUnfolderBase]: 827/1440 cut-off events. [2023-11-12 02:06:45,477 INFO L125 PetriNetUnfolderBase]: For 215/217 co-relation queries the response was YES. [2023-11-12 02:06:45,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2880 conditions, 1440 events. 827/1440 cut-off events. For 215/217 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 7359 event pairs, 356 based on Foata normal form. 34/1161 useless extension candidates. Maximal degree in co-relation 2875. Up to 1004 conditions per place. [2023-11-12 02:06:45,487 INFO L140 encePairwiseOnDemand]: 194/201 looper letters, 51 selfloop transitions, 4 changer transitions 5/77 dead transitions. [2023-11-12 02:06:45,487 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 77 transitions, 309 flow [2023-11-12 02:06:45,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:06:45,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:06:45,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 393 transitions. [2023-11-12 02:06:45,490 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6517412935323383 [2023-11-12 02:06:45,490 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 393 transitions. [2023-11-12 02:06:45,490 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 393 transitions. [2023-11-12 02:06:45,491 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:06:45,492 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 393 transitions. [2023-11-12 02:06:45,493 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 131.0) internal successors, (393), 3 states have internal predecessors, (393), 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) [2023-11-12 02:06:45,497 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 201.0) internal successors, (804), 4 states have internal predecessors, (804), 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) [2023-11-12 02:06:45,498 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 201.0) internal successors, (804), 4 states have internal predecessors, (804), 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) [2023-11-12 02:06:45,498 INFO L175 Difference]: Start difference. First operand has 55 places, 60 transitions, 154 flow. Second operand 3 states and 393 transitions. [2023-11-12 02:06:45,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 77 transitions, 309 flow [2023-11-12 02:06:45,504 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 77 transitions, 299 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:06:45,507 INFO L231 Difference]: Finished difference. Result has 56 places, 59 transitions, 158 flow [2023-11-12 02:06:45,507 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=201, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=158, PETRI_PLACES=56, PETRI_TRANSITIONS=59} [2023-11-12 02:06:45,509 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 3 predicate places. [2023-11-12 02:06:45,509 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 59 transitions, 158 flow [2023-11-12 02:06:45,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 113.0) internal successors, (339), 3 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:06:45,510 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:06:45,511 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:06:45,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-12 02:06:45,511 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-12 02:06:45,512 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:06:45,512 INFO L85 PathProgramCache]: Analyzing trace with hash 701379931, now seen corresponding path program 1 times [2023-11-12 02:06:45,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:06:45,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080737941] [2023-11-12 02:06:45,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:06:45,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:06:45,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:06:45,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:06:45,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:06:45,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080737941] [2023-11-12 02:06:45,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080737941] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:06:45,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:06:45,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:06:45,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980926563] [2023-11-12 02:06:45,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:06:45,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:06:45,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:06:45,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:06:45,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:06:45,708 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 201 [2023-11-12 02:06:45,709 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 59 transitions, 158 flow. Second operand has 3 states, 3 states have (on average 114.66666666666667) internal successors, (344), 3 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) [2023-11-12 02:06:45,710 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:06:45,710 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 201 [2023-11-12 02:06:45,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:06:46,078 INFO L124 PetriNetUnfolderBase]: 1551/2600 cut-off events. [2023-11-12 02:06:46,078 INFO L125 PetriNetUnfolderBase]: For 649/651 co-relation queries the response was YES. [2023-11-12 02:06:46,084 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5320 conditions, 2600 events. 1551/2600 cut-off events. For 649/651 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 13958 event pairs, 411 based on Foata normal form. 0/2094 useless extension candidates. Maximal degree in co-relation 5314. Up to 1325 conditions per place. [2023-11-12 02:06:46,097 INFO L140 encePairwiseOnDemand]: 196/201 looper letters, 66 selfloop transitions, 4 changer transitions 11/96 dead transitions. [2023-11-12 02:06:46,098 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 96 transitions, 424 flow [2023-11-12 02:06:46,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:06:46,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:06:46,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 408 transitions. [2023-11-12 02:06:46,101 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6766169154228856 [2023-11-12 02:06:46,101 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 408 transitions. [2023-11-12 02:06:46,101 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 408 transitions. [2023-11-12 02:06:46,102 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:06:46,102 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 408 transitions. [2023-11-12 02:06:46,104 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 136.0) internal successors, (408), 3 states have internal predecessors, (408), 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) [2023-11-12 02:06:46,107 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 201.0) internal successors, (804), 4 states have internal predecessors, (804), 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) [2023-11-12 02:06:46,108 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 201.0) internal successors, (804), 4 states have internal predecessors, (804), 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) [2023-11-12 02:06:46,108 INFO L175 Difference]: Start difference. First operand has 56 places, 59 transitions, 158 flow. Second operand 3 states and 408 transitions. [2023-11-12 02:06:46,108 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 96 transitions, 424 flow [2023-11-12 02:06:46,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 96 transitions, 416 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:06:46,115 INFO L231 Difference]: Finished difference. Result has 58 places, 63 transitions, 188 flow [2023-11-12 02:06:46,115 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=201, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=188, PETRI_PLACES=58, PETRI_TRANSITIONS=63} [2023-11-12 02:06:46,116 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 5 predicate places. [2023-11-12 02:06:46,117 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 63 transitions, 188 flow [2023-11-12 02:06:46,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 114.66666666666667) internal successors, (344), 3 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) [2023-11-12 02:06:46,118 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:06:46,118 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:06:46,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-12 02:06:46,119 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-12 02:06:46,119 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:06:46,120 INFO L85 PathProgramCache]: Analyzing trace with hash -186260467, now seen corresponding path program 2 times [2023-11-12 02:06:46,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:06:46,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342527549] [2023-11-12 02:06:46,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:06:46,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:06:46,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:06:46,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:06:46,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:06:46,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342527549] [2023-11-12 02:06:46,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342527549] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:06:46,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:06:46,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:06:46,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240326815] [2023-11-12 02:06:46,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:06:46,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:06:46,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:06:46,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:06:46,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:06:46,253 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 201 [2023-11-12 02:06:46,254 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 63 transitions, 188 flow. Second operand has 4 states, 4 states have (on average 103.75) internal successors, (415), 4 states have internal predecessors, (415), 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) [2023-11-12 02:06:46,255 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:06:46,255 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 201 [2023-11-12 02:06:46,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:06:46,782 INFO L124 PetriNetUnfolderBase]: 2056/3425 cut-off events. [2023-11-12 02:06:46,783 INFO L125 PetriNetUnfolderBase]: For 1039/1043 co-relation queries the response was YES. [2023-11-12 02:06:46,790 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7379 conditions, 3425 events. 2056/3425 cut-off events. For 1039/1043 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 19131 event pairs, 553 based on Foata normal form. 88/3004 useless extension candidates. Maximal degree in co-relation 7372. Up to 1799 conditions per place. [2023-11-12 02:06:46,800 INFO L140 encePairwiseOnDemand]: 187/201 looper letters, 55 selfloop transitions, 5 changer transitions 54/127 dead transitions. [2023-11-12 02:06:46,800 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 127 transitions, 587 flow [2023-11-12 02:06:46,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:06:46,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-12 02:06:46,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 616 transitions. [2023-11-12 02:06:46,804 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6129353233830845 [2023-11-12 02:06:46,804 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 616 transitions. [2023-11-12 02:06:46,804 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 616 transitions. [2023-11-12 02:06:46,805 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:06:46,805 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 616 transitions. [2023-11-12 02:06:46,808 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 123.2) internal successors, (616), 5 states have internal predecessors, (616), 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) [2023-11-12 02:06:46,811 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 201.0) internal successors, (1206), 6 states have internal predecessors, (1206), 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) [2023-11-12 02:06:46,812 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 201.0) internal successors, (1206), 6 states have internal predecessors, (1206), 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) [2023-11-12 02:06:46,813 INFO L175 Difference]: Start difference. First operand has 58 places, 63 transitions, 188 flow. Second operand 5 states and 616 transitions. [2023-11-12 02:06:46,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 127 transitions, 587 flow [2023-11-12 02:06:46,818 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 127 transitions, 577 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:06:46,822 INFO L231 Difference]: Finished difference. Result has 63 places, 61 transitions, 237 flow [2023-11-12 02:06:46,823 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=201, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=237, PETRI_PLACES=63, PETRI_TRANSITIONS=61} [2023-11-12 02:06:46,826 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 10 predicate places. [2023-11-12 02:06:46,827 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 61 transitions, 237 flow [2023-11-12 02:06:46,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 103.75) internal successors, (415), 4 states have internal predecessors, (415), 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) [2023-11-12 02:06:46,828 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:06:46,828 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:06:46,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-12 02:06:46,828 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-12 02:06:46,829 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:06:46,829 INFO L85 PathProgramCache]: Analyzing trace with hash 1571726797, now seen corresponding path program 3 times [2023-11-12 02:06:46,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:06:46,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114428487] [2023-11-12 02:06:46,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:06:46,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:06:46,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:06:46,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:06:46,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:06:46,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114428487] [2023-11-12 02:06:46,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114428487] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:06:46,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:06:46,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:06:46,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179361673] [2023-11-12 02:06:46,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:06:46,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:06:46,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:06:46,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:06:46,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:06:46,949 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 201 [2023-11-12 02:06:46,950 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 61 transitions, 237 flow. Second operand has 4 states, 4 states have (on average 114.0) internal successors, (456), 4 states have internal predecessors, (456), 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) [2023-11-12 02:06:46,950 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:06:46,950 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 201 [2023-11-12 02:06:46,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:06:47,702 INFO L124 PetriNetUnfolderBase]: 3060/5407 cut-off events. [2023-11-12 02:06:47,702 INFO L125 PetriNetUnfolderBase]: For 2726/2864 co-relation queries the response was YES. [2023-11-12 02:06:47,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13331 conditions, 5407 events. 3060/5407 cut-off events. For 2726/2864 co-relation queries the response was YES. Maximal size of possible extension queue 265. Compared 36234 event pairs, 725 based on Foata normal form. 38/4931 useless extension candidates. Maximal degree in co-relation 13321. Up to 1909 conditions per place. [2023-11-12 02:06:47,745 INFO L140 encePairwiseOnDemand]: 197/201 looper letters, 117 selfloop transitions, 6 changer transitions 8/149 dead transitions. [2023-11-12 02:06:47,745 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 149 transitions, 819 flow [2023-11-12 02:06:47,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:06:47,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-12 02:06:47,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 673 transitions. [2023-11-12 02:06:47,749 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6696517412935323 [2023-11-12 02:06:47,749 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 673 transitions. [2023-11-12 02:06:47,750 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 673 transitions. [2023-11-12 02:06:47,750 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:06:47,751 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 673 transitions. [2023-11-12 02:06:47,753 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 134.6) internal successors, (673), 5 states have internal predecessors, (673), 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) [2023-11-12 02:06:47,757 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 201.0) internal successors, (1206), 6 states have internal predecessors, (1206), 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) [2023-11-12 02:06:47,759 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 201.0) internal successors, (1206), 6 states have internal predecessors, (1206), 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) [2023-11-12 02:06:47,759 INFO L175 Difference]: Start difference. First operand has 63 places, 61 transitions, 237 flow. Second operand 5 states and 673 transitions. [2023-11-12 02:06:47,759 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 149 transitions, 819 flow [2023-11-12 02:06:47,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 149 transitions, 746 flow, removed 33 selfloop flow, removed 2 redundant places. [2023-11-12 02:06:47,779 INFO L231 Difference]: Finished difference. Result has 66 places, 67 transitions, 258 flow [2023-11-12 02:06:47,780 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=201, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=258, PETRI_PLACES=66, PETRI_TRANSITIONS=67} [2023-11-12 02:06:47,782 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 13 predicate places. [2023-11-12 02:06:47,783 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 67 transitions, 258 flow [2023-11-12 02:06:47,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 114.0) internal successors, (456), 4 states have internal predecessors, (456), 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) [2023-11-12 02:06:47,783 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:06:47,783 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:06:47,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-12 02:06:47,785 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-12 02:06:47,785 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:06:47,786 INFO L85 PathProgramCache]: Analyzing trace with hash -513885367, now seen corresponding path program 4 times [2023-11-12 02:06:47,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:06:47,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130513703] [2023-11-12 02:06:47,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:06:47,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:06:47,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:06:47,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:06:47,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:06:47,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130513703] [2023-11-12 02:06:47,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130513703] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:06:47,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:06:47,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:06:47,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427524029] [2023-11-12 02:06:47,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:06:47,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:06:47,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:06:47,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:06:47,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:06:47,884 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 201 [2023-11-12 02:06:47,884 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 67 transitions, 258 flow. Second operand has 4 states, 4 states have (on average 114.0) internal successors, (456), 4 states have internal predecessors, (456), 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) [2023-11-12 02:06:47,885 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:06:47,885 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 201 [2023-11-12 02:06:47,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:06:48,752 INFO L124 PetriNetUnfolderBase]: 3597/6562 cut-off events. [2023-11-12 02:06:48,752 INFO L125 PetriNetUnfolderBase]: For 2865/2963 co-relation queries the response was YES. [2023-11-12 02:06:48,850 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15638 conditions, 6562 events. 3597/6562 cut-off events. For 2865/2963 co-relation queries the response was YES. Maximal size of possible extension queue 285. Compared 44846 event pairs, 811 based on Foata normal form. 104/6185 useless extension candidates. Maximal degree in co-relation 15626. Up to 2129 conditions per place. [2023-11-12 02:06:48,882 INFO L140 encePairwiseOnDemand]: 197/201 looper letters, 107 selfloop transitions, 6 changer transitions 2/135 dead transitions. [2023-11-12 02:06:48,882 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 135 transitions, 736 flow [2023-11-12 02:06:48,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:06:48,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-12 02:06:48,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 541 transitions. [2023-11-12 02:06:48,887 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6728855721393034 [2023-11-12 02:06:48,887 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 541 transitions. [2023-11-12 02:06:48,887 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 541 transitions. [2023-11-12 02:06:48,888 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:06:48,888 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 541 transitions. [2023-11-12 02:06:48,890 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 135.25) internal successors, (541), 4 states have internal predecessors, (541), 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) [2023-11-12 02:06:48,893 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 201.0) internal successors, (1005), 5 states have internal predecessors, (1005), 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) [2023-11-12 02:06:48,894 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 201.0) internal successors, (1005), 5 states have internal predecessors, (1005), 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) [2023-11-12 02:06:48,894 INFO L175 Difference]: Start difference. First operand has 66 places, 67 transitions, 258 flow. Second operand 4 states and 541 transitions. [2023-11-12 02:06:48,894 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 135 transitions, 736 flow [2023-11-12 02:06:48,902 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 135 transitions, 736 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-12 02:06:48,907 INFO L231 Difference]: Finished difference. Result has 72 places, 70 transitions, 304 flow [2023-11-12 02:06:48,908 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=201, PETRI_DIFFERENCE_MINUEND_FLOW=258, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=304, PETRI_PLACES=72, PETRI_TRANSITIONS=70} [2023-11-12 02:06:48,908 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 19 predicate places. [2023-11-12 02:06:48,909 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 70 transitions, 304 flow [2023-11-12 02:06:48,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 114.0) internal successors, (456), 4 states have internal predecessors, (456), 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) [2023-11-12 02:06:48,909 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:06:48,909 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] [2023-11-12 02:06:48,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-12 02:06:48,910 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-12 02:06:48,910 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:06:48,910 INFO L85 PathProgramCache]: Analyzing trace with hash 2046459807, now seen corresponding path program 1 times [2023-11-12 02:06:48,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:06:48,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685868914] [2023-11-12 02:06:48,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:06:48,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:06:48,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:06:48,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:06:48,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:06:48,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685868914] [2023-11-12 02:06:48,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685868914] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:06:48,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:06:48,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:06:48,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890867122] [2023-11-12 02:06:48,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:06:48,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:06:48,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:06:49,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:06:49,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:06:49,020 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 201 [2023-11-12 02:06:49,021 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 70 transitions, 304 flow. Second operand has 4 states, 4 states have (on average 110.0) internal successors, (440), 4 states have internal predecessors, (440), 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) [2023-11-12 02:06:49,021 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:06:49,021 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 201 [2023-11-12 02:06:49,022 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:06:49,818 INFO L124 PetriNetUnfolderBase]: 3133/5816 cut-off events. [2023-11-12 02:06:49,819 INFO L125 PetriNetUnfolderBase]: For 2914/3058 co-relation queries the response was YES. [2023-11-12 02:06:49,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13793 conditions, 5816 events. 3133/5816 cut-off events. For 2914/3058 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 39368 event pairs, 1228 based on Foata normal form. 120/5435 useless extension candidates. Maximal degree in co-relation 13778. Up to 3524 conditions per place. [2023-11-12 02:06:49,862 INFO L140 encePairwiseOnDemand]: 194/201 looper letters, 64 selfloop transitions, 9 changer transitions 8/109 dead transitions. [2023-11-12 02:06:49,862 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 109 transitions, 589 flow [2023-11-12 02:06:49,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:06:49,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-12 02:06:49,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 606 transitions. [2023-11-12 02:06:49,866 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6029850746268657 [2023-11-12 02:06:49,866 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 606 transitions. [2023-11-12 02:06:49,866 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 606 transitions. [2023-11-12 02:06:49,867 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:06:49,867 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 606 transitions. [2023-11-12 02:06:49,869 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 121.2) internal successors, (606), 5 states have internal predecessors, (606), 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) [2023-11-12 02:06:49,872 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 201.0) internal successors, (1206), 6 states have internal predecessors, (1206), 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) [2023-11-12 02:06:49,872 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 201.0) internal successors, (1206), 6 states have internal predecessors, (1206), 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) [2023-11-12 02:06:49,873 INFO L175 Difference]: Start difference. First operand has 72 places, 70 transitions, 304 flow. Second operand 5 states and 606 transitions. [2023-11-12 02:06:49,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 109 transitions, 589 flow [2023-11-12 02:06:49,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 109 transitions, 581 flow, removed 4 selfloop flow, removed 0 redundant places. [2023-11-12 02:06:49,883 INFO L231 Difference]: Finished difference. Result has 79 places, 75 transitions, 350 flow [2023-11-12 02:06:49,884 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=201, PETRI_DIFFERENCE_MINUEND_FLOW=300, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=350, PETRI_PLACES=79, PETRI_TRANSITIONS=75} [2023-11-12 02:06:49,887 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 26 predicate places. [2023-11-12 02:06:49,887 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 75 transitions, 350 flow [2023-11-12 02:06:49,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 110.0) internal successors, (440), 4 states have internal predecessors, (440), 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) [2023-11-12 02:06:49,888 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:06:49,888 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] [2023-11-12 02:06:49,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-12 02:06:49,889 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-12 02:06:49,889 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:06:49,890 INFO L85 PathProgramCache]: Analyzing trace with hash -536326454, now seen corresponding path program 1 times [2023-11-12 02:06:49,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:06:49,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83519131] [2023-11-12 02:06:49,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:06:49,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:06:49,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:06:49,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:06:49,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:06:49,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83519131] [2023-11-12 02:06:49,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83519131] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:06:49,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:06:49,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:06:49,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563967838] [2023-11-12 02:06:49,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:06:49,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:06:49,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:06:49,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:06:49,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:06:49,993 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 201 [2023-11-12 02:06:49,994 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 75 transitions, 350 flow. Second operand has 4 states, 4 states have (on average 110.0) internal successors, (440), 4 states have internal predecessors, (440), 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) [2023-11-12 02:06:49,994 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:06:49,994 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 201 [2023-11-12 02:06:49,995 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:06:50,855 INFO L124 PetriNetUnfolderBase]: 2903/5627 cut-off events. [2023-11-12 02:06:50,855 INFO L125 PetriNetUnfolderBase]: For 4044/4158 co-relation queries the response was YES. [2023-11-12 02:06:50,887 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14507 conditions, 5627 events. 2903/5627 cut-off events. For 4044/4158 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 38721 event pairs, 1088 based on Foata normal form. 22/5184 useless extension candidates. Maximal degree in co-relation 14488. Up to 3136 conditions per place. [2023-11-12 02:06:50,902 INFO L140 encePairwiseOnDemand]: 194/201 looper letters, 67 selfloop transitions, 10 changer transitions 12/115 dead transitions. [2023-11-12 02:06:50,902 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 115 transitions, 651 flow [2023-11-12 02:06:50,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:06:50,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-12 02:06:50,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 607 transitions. [2023-11-12 02:06:50,906 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6039800995024875 [2023-11-12 02:06:50,907 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 607 transitions. [2023-11-12 02:06:50,907 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 607 transitions. [2023-11-12 02:06:50,908 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:06:50,908 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 607 transitions. [2023-11-12 02:06:50,911 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 121.4) internal successors, (607), 5 states have internal predecessors, (607), 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) [2023-11-12 02:06:50,914 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 201.0) internal successors, (1206), 6 states have internal predecessors, (1206), 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) [2023-11-12 02:06:50,915 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 201.0) internal successors, (1206), 6 states have internal predecessors, (1206), 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) [2023-11-12 02:06:50,915 INFO L175 Difference]: Start difference. First operand has 79 places, 75 transitions, 350 flow. Second operand 5 states and 607 transitions. [2023-11-12 02:06:50,916 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 115 transitions, 651 flow [2023-11-12 02:06:50,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 115 transitions, 648 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-12 02:06:50,929 INFO L231 Difference]: Finished difference. Result has 85 places, 75 transitions, 368 flow [2023-11-12 02:06:50,930 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=201, PETRI_DIFFERENCE_MINUEND_FLOW=347, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=368, PETRI_PLACES=85, PETRI_TRANSITIONS=75} [2023-11-12 02:06:50,931 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 32 predicate places. [2023-11-12 02:06:50,931 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 75 transitions, 368 flow [2023-11-12 02:06:50,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 110.0) internal successors, (440), 4 states have internal predecessors, (440), 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) [2023-11-12 02:06:50,932 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:06:50,932 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] [2023-11-12 02:06:50,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-12 02:06:50,933 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-12 02:06:50,933 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:06:50,933 INFO L85 PathProgramCache]: Analyzing trace with hash 1513594200, now seen corresponding path program 1 times [2023-11-12 02:06:50,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:06:50,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936440725] [2023-11-12 02:06:50,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:06:50,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:06:50,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:06:51,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:06:51,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:06:51,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936440725] [2023-11-12 02:06:51,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936440725] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:06:51,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:06:51,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:06:51,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256153169] [2023-11-12 02:06:51,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:06:51,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:06:51,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:06:51,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:06:51,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:06:51,048 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 201 [2023-11-12 02:06:51,049 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 75 transitions, 368 flow. Second operand has 4 states, 4 states have (on average 114.0) internal successors, (456), 4 states have internal predecessors, (456), 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) [2023-11-12 02:06:51,049 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:06:51,049 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 201 [2023-11-12 02:06:51,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:06:51,517 INFO L124 PetriNetUnfolderBase]: 1925/3529 cut-off events. [2023-11-12 02:06:51,518 INFO L125 PetriNetUnfolderBase]: For 3669/3758 co-relation queries the response was YES. [2023-11-12 02:06:51,534 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10337 conditions, 3529 events. 1925/3529 cut-off events. For 3669/3758 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 20774 event pairs, 709 based on Foata normal form. 48/3282 useless extension candidates. Maximal degree in co-relation 10315. Up to 1939 conditions per place. [2023-11-12 02:06:51,541 INFO L140 encePairwiseOnDemand]: 197/201 looper letters, 61 selfloop transitions, 3 changer transitions 34/115 dead transitions. [2023-11-12 02:06:51,541 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 115 transitions, 733 flow [2023-11-12 02:06:51,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:06:51,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-12 02:06:51,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 624 transitions. [2023-11-12 02:06:51,544 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6208955223880597 [2023-11-12 02:06:51,545 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 624 transitions. [2023-11-12 02:06:51,545 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 624 transitions. [2023-11-12 02:06:51,546 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:06:51,546 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 624 transitions. [2023-11-12 02:06:51,548 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 124.8) internal successors, (624), 5 states have internal predecessors, (624), 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) [2023-11-12 02:06:51,550 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 201.0) internal successors, (1206), 6 states have internal predecessors, (1206), 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) [2023-11-12 02:06:51,551 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 201.0) internal successors, (1206), 6 states have internal predecessors, (1206), 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) [2023-11-12 02:06:51,551 INFO L175 Difference]: Start difference. First operand has 85 places, 75 transitions, 368 flow. Second operand 5 states and 624 transitions. [2023-11-12 02:06:51,552 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 115 transitions, 733 flow [2023-11-12 02:06:51,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 115 transitions, 722 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-11-12 02:06:51,568 INFO L231 Difference]: Finished difference. Result has 90 places, 70 transitions, 338 flow [2023-11-12 02:06:51,569 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=201, PETRI_DIFFERENCE_MINUEND_FLOW=360, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=338, PETRI_PLACES=90, PETRI_TRANSITIONS=70} [2023-11-12 02:06:51,570 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 37 predicate places. [2023-11-12 02:06:51,570 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 70 transitions, 338 flow [2023-11-12 02:06:51,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 114.0) internal successors, (456), 4 states have internal predecessors, (456), 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) [2023-11-12 02:06:51,573 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:06:51,573 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] [2023-11-12 02:06:51,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-12 02:06:51,573 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-12 02:06:51,574 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:06:51,574 INFO L85 PathProgramCache]: Analyzing trace with hash -392559632, now seen corresponding path program 2 times [2023-11-12 02:06:51,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:06:51,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511949759] [2023-11-12 02:06:51,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:06:51,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:06:51,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:06:51,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:06:51,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:06:51,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511949759] [2023-11-12 02:06:51,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511949759] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:06:51,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:06:51,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:06:51,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419821260] [2023-11-12 02:06:51,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:06:51,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:06:51,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:06:51,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:06:51,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:06:51,658 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 201 [2023-11-12 02:06:51,659 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 70 transitions, 338 flow. Second operand has 4 states, 4 states have (on average 114.0) internal successors, (456), 4 states have internal predecessors, (456), 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) [2023-11-12 02:06:51,659 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:06:51,659 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 201 [2023-11-12 02:06:51,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:06:51,804 INFO L124 PetriNetUnfolderBase]: 406/753 cut-off events. [2023-11-12 02:06:51,804 INFO L125 PetriNetUnfolderBase]: For 1038/1066 co-relation queries the response was YES. [2023-11-12 02:06:51,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2348 conditions, 753 events. 406/753 cut-off events. For 1038/1066 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 3178 event pairs, 112 based on Foata normal form. 18/721 useless extension candidates. Maximal degree in co-relation 2324. Up to 326 conditions per place. [2023-11-12 02:06:51,807 INFO L140 encePairwiseOnDemand]: 197/201 looper letters, 0 selfloop transitions, 0 changer transitions 66/66 dead transitions. [2023-11-12 02:06:51,807 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 66 transitions, 419 flow [2023-11-12 02:06:51,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:06:51,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-12 02:06:51,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 486 transitions. [2023-11-12 02:06:51,810 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6044776119402985 [2023-11-12 02:06:51,811 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 486 transitions. [2023-11-12 02:06:51,811 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 486 transitions. [2023-11-12 02:06:51,811 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:06:51,811 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 486 transitions. [2023-11-12 02:06:51,813 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 121.5) internal successors, (486), 4 states have internal predecessors, (486), 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) [2023-11-12 02:06:51,815 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 201.0) internal successors, (1005), 5 states have internal predecessors, (1005), 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) [2023-11-12 02:06:51,816 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 201.0) internal successors, (1005), 5 states have internal predecessors, (1005), 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) [2023-11-12 02:06:51,816 INFO L175 Difference]: Start difference. First operand has 90 places, 70 transitions, 338 flow. Second operand 4 states and 486 transitions. [2023-11-12 02:06:51,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 66 transitions, 419 flow [2023-11-12 02:06:51,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 66 transitions, 347 flow, removed 15 selfloop flow, removed 16 redundant places. [2023-11-12 02:06:51,821 INFO L231 Difference]: Finished difference. Result has 61 places, 0 transitions, 0 flow [2023-11-12 02:06:51,822 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=201, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=61, PETRI_TRANSITIONS=0} [2023-11-12 02:06:51,822 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 8 predicate places. [2023-11-12 02:06:51,822 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 0 transitions, 0 flow [2023-11-12 02:06:51,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 114.0) internal successors, (456), 4 states have internal predecessors, (456), 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) [2023-11-12 02:06:51,826 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining) [2023-11-12 02:06:51,827 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2023-11-12 02:06:51,827 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 6 remaining) [2023-11-12 02:06:51,828 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 6 remaining) [2023-11-12 02:06:51,828 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2023-11-12 02:06:51,828 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2023-11-12 02:06:51,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-12 02:06:51,829 INFO L445 BasicCegarLoop]: Path program histogram: [4, 2, 1, 1, 1, 1, 1] [2023-11-12 02:06:51,834 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-12 02:06:51,834 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-11-12 02:06:51,839 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 02:06:51 BasicIcfg [2023-11-12 02:06:51,839 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-12 02:06:51,840 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-12 02:06:51,840 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-12 02:06:51,840 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-12 02:06:51,841 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:06:41" (3/4) ... [2023-11-12 02:06:51,843 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-12 02:06:51,848 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thr2 [2023-11-12 02:06:51,848 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thr1 [2023-11-12 02:06:51,853 INFO L944 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2023-11-12 02:06:51,853 INFO L944 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-12 02:06:51,854 INFO L944 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-12 02:06:51,854 INFO L944 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-12 02:06:51,933 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a87fde-75eb-4aeb-9a23-5dc1aa0dce7e/bin/uautomizer-verify-uTZkv6EMXl/witness.graphml [2023-11-12 02:06:51,934 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a87fde-75eb-4aeb-9a23-5dc1aa0dce7e/bin/uautomizer-verify-uTZkv6EMXl/witness.yml [2023-11-12 02:06:51,934 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-12 02:06:51,934 INFO L158 Benchmark]: Toolchain (without parser) took 12067.90ms. Allocated memory was 192.9MB in the beginning and 450.9MB in the end (delta: 257.9MB). Free memory was 144.9MB in the beginning and 314.3MB in the end (delta: -169.5MB). Peak memory consumption was 90.6MB. Max. memory is 16.1GB. [2023-11-12 02:06:51,935 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 117.4MB. Free memory is still 66.9MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-12 02:06:51,935 INFO L158 Benchmark]: CACSL2BoogieTranslator took 708.69ms. Allocated memory is still 192.9MB. Free memory was 144.9MB in the beginning and 123.9MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-12 02:06:51,935 INFO L158 Benchmark]: Boogie Procedure Inliner took 73.56ms. Allocated memory is still 192.9MB. Free memory was 123.9MB in the beginning and 121.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-12 02:06:51,936 INFO L158 Benchmark]: Boogie Preprocessor took 64.03ms. Allocated memory is still 192.9MB. Free memory was 121.8MB in the beginning and 120.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-12 02:06:51,936 INFO L158 Benchmark]: RCFGBuilder took 596.00ms. Allocated memory is still 192.9MB. Free memory was 120.2MB in the beginning and 105.0MB in the end (delta: 15.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-12 02:06:51,937 INFO L158 Benchmark]: TraceAbstraction took 10519.58ms. Allocated memory was 192.9MB in the beginning and 450.9MB in the end (delta: 257.9MB). Free memory was 104.5MB in the beginning and 318.5MB in the end (delta: -214.0MB). Peak memory consumption was 46.5MB. Max. memory is 16.1GB. [2023-11-12 02:06:51,937 INFO L158 Benchmark]: Witness Printer took 93.90ms. Allocated memory is still 450.9MB. Free memory was 318.5MB in the beginning and 314.3MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-12 02:06:51,939 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35ms. Allocated memory is still 117.4MB. Free memory is still 66.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 708.69ms. Allocated memory is still 192.9MB. Free memory was 144.9MB in the beginning and 123.9MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 73.56ms. Allocated memory is still 192.9MB. Free memory was 123.9MB in the beginning and 121.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 64.03ms. Allocated memory is still 192.9MB. Free memory was 121.8MB in the beginning and 120.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 596.00ms. Allocated memory is still 192.9MB. Free memory was 120.2MB in the beginning and 105.0MB in the end (delta: 15.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 10519.58ms. Allocated memory was 192.9MB in the beginning and 450.9MB in the end (delta: 257.9MB). Free memory was 104.5MB in the beginning and 318.5MB in the end (delta: -214.0MB). Peak memory consumption was 46.5MB. Max. memory is 16.1GB. * Witness Printer took 93.90ms. Allocated memory is still 450.9MB. Free memory was 318.5MB in the beginning and 314.3MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.3s, 102 PlacesBefore, 53 PlacesAfterwards, 119 TransitionsBefore, 64 TransitionsAfterwards, 5192 CoEnabledTransitionPairs, 5 FixpointIterations, 17 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 12 ConcurrentYvCompositions, 6 ChoiceCompositions, 70 TotalNumberOfCompositions, 14303 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 5969, independent: 5637, independent conditional: 0, independent unconditional: 5637, dependent: 332, dependent conditional: 0, dependent unconditional: 332, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 2327, independent: 2276, independent conditional: 0, independent unconditional: 2276, dependent: 51, dependent conditional: 0, dependent unconditional: 51, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 5969, independent: 3361, independent conditional: 0, independent unconditional: 3361, dependent: 281, dependent conditional: 0, dependent unconditional: 281, unknown: 2327, unknown conditional: 0, unknown unconditional: 2327] , Statistics on independence cache: Total cache size (in pairs): 408, Positive cache size: 371, Positive conditional cache size: 0, Positive unconditional cache size: 371, Negative cache size: 37, Negative conditional cache size: 0, Negative unconditional cache size: 37, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 834]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 764]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 176 locations, 6 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: 10.3s, OverallIterations: 11, TraceHistogramMax: 1, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 6.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 597 SdHoareTripleChecker+Valid, 1.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 477 mSDsluCounter, 98 SdHoareTripleChecker+Invalid, 1.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 41 mSDsCounter, 48 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1594 IncrementalHoareTripleChecker+Invalid, 1642 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 48 mSolverCounterUnsat, 57 mSDtfsCounter, 1594 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 48 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=368occurred in iteration=9, InterpolantAutomatonStates: 44, 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, 0.8s InterpolantComputationTime, 196 NumberOfCodeBlocks, 196 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 185 ConstructedInterpolants, 0 QuantifiedInterpolants, 309 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 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 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-12 02:06:51,973 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a87fde-75eb-4aeb-9a23-5dc1aa0dce7e/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE