./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread-atomic/read_write_lock-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows 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_df02e7da-87c8-4625-b8aa-d6caadb7b470/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df02e7da-87c8-4625-b8aa-d6caadb7b470/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_df02e7da-87c8-4625-b8aa-d6caadb7b470/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df02e7da-87c8-4625-b8aa-d6caadb7b470/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-atomic/read_write_lock-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df02e7da-87c8-4625-b8aa-d6caadb7b470/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df02e7da-87c8-4625-b8aa-d6caadb7b470/bin/uautomizer-verify-uTZkv6EMXl --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8fab2e995569cc819974baee7d52d8d4bdabd2a2896c83fb3b8d07b44f394c5b --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:21:10,654 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:21:10,769 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df02e7da-87c8-4625-b8aa-d6caadb7b470/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-12 02:21:10,776 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:21:10,777 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:21:10,810 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:21:10,811 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:21:10,812 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:21:10,813 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:21:10,814 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:21:10,815 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:21:10,816 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:21:10,817 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:21:10,818 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:21:10,818 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 02:21:10,819 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:21:10,820 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:21:10,821 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:21:10,821 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:21:10,822 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 02:21:10,823 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:21:10,824 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 02:21:10,825 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-12 02:21:10,825 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 02:21:10,826 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:21:10,827 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 02:21:10,828 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:21:10,828 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:21:10,829 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:21:10,830 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:21:10,831 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:21:10,832 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:21:10,832 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:21:10,833 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 02:21:10,834 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:21:10,834 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:21:10,835 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:21:10,836 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 02:21:10,837 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:21:10,837 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:21:10,838 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:21:10,839 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_df02e7da-87c8-4625-b8aa-d6caadb7b470/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df02e7da-87c8-4625-b8aa-d6caadb7b470/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8fab2e995569cc819974baee7d52d8d4bdabd2a2896c83fb3b8d07b44f394c5b [2023-11-12 02:21:11,148 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:21:11,182 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:21:11,184 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:21:11,186 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:21:11,186 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:21:11,188 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df02e7da-87c8-4625-b8aa-d6caadb7b470/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/pthread-atomic/read_write_lock-1.i [2023-11-12 02:21:14,222 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:21:14,636 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:21:14,637 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df02e7da-87c8-4625-b8aa-d6caadb7b470/sv-benchmarks/c/pthread-atomic/read_write_lock-1.i [2023-11-12 02:21:14,673 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df02e7da-87c8-4625-b8aa-d6caadb7b470/bin/uautomizer-verify-uTZkv6EMXl/data/09ce2d8fc/f25dbb87b1764bd4909666da98bde614/FLAG7944189eb [2023-11-12 02:21:14,699 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df02e7da-87c8-4625-b8aa-d6caadb7b470/bin/uautomizer-verify-uTZkv6EMXl/data/09ce2d8fc/f25dbb87b1764bd4909666da98bde614 [2023-11-12 02:21:14,706 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:21:14,708 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:21:14,711 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:21:14,711 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:21:14,717 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:21:14,717 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:21:14" (1/1) ... [2023-11-12 02:21:14,718 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58968ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:21:14, skipping insertion in model container [2023-11-12 02:21:14,719 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:21:14" (1/1) ... [2023-11-12 02:21:14,786 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:21:14,983 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-12 02:21:15,164 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:21:15,176 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:21:15,203 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-12 02:21:15,245 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:21:15,287 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:21:15,287 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:21:15,288 WARN L672 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:21:15,296 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:21:15,297 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:21:15 WrapperNode [2023-11-12 02:21:15,297 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:21:15,299 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:21:15,299 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:21:15,299 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:21:15,309 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:21:15" (1/1) ... [2023-11-12 02:21:15,349 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:21:15" (1/1) ... [2023-11-12 02:21:15,390 INFO L138 Inliner]: procedures = 175, calls = 47, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 120 [2023-11-12 02:21:15,391 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:21:15,391 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:21:15,392 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:21:15,392 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:21:15,402 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:21:15" (1/1) ... [2023-11-12 02:21:15,402 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:21:15" (1/1) ... [2023-11-12 02:21:15,416 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:21:15" (1/1) ... [2023-11-12 02:21:15,421 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:21:15" (1/1) ... [2023-11-12 02:21:15,427 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:21:15" (1/1) ... [2023-11-12 02:21:15,439 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:21:15" (1/1) ... [2023-11-12 02:21:15,441 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:21:15" (1/1) ... [2023-11-12 02:21:15,443 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:21:15" (1/1) ... [2023-11-12 02:21:15,451 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:21:15,452 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:21:15,458 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:21:15,459 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:21:15,460 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:21:15" (1/1) ... [2023-11-12 02:21:15,467 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:21:15,481 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df02e7da-87c8-4625-b8aa-d6caadb7b470/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:21:15,496 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df02e7da-87c8-4625-b8aa-d6caadb7b470/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:21:15,523 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df02e7da-87c8-4625-b8aa-d6caadb7b470/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:21:15,544 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 02:21:15,545 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 02:21:15,545 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-12 02:21:15,545 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:21:15,545 INFO L130 BoogieDeclarations]: Found specification of procedure reader [2023-11-12 02:21:15,545 INFO L138 BoogieDeclarations]: Found implementation of procedure reader [2023-11-12 02:21:15,546 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 02:21:15,546 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 02:21:15,547 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 02:21:15,548 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-12 02:21:15,548 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:21:15,548 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:21:15,549 INFO L130 BoogieDeclarations]: Found specification of procedure writer [2023-11-12 02:21:15,549 INFO L138 BoogieDeclarations]: Found implementation of procedure writer [2023-11-12 02:21:15,551 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 02:21:15,754 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:21:15,757 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:21:16,007 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:21:16,098 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:21:16,098 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-12 02:21:16,101 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:21:16 BoogieIcfgContainer [2023-11-12 02:21:16,101 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:21:16,105 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:21:16,105 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:21:16,109 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:21:16,109 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:21:14" (1/3) ... [2023-11-12 02:21:16,123 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cb7d525 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:21:16, skipping insertion in model container [2023-11-12 02:21:16,124 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:21:15" (2/3) ... [2023-11-12 02:21:16,124 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cb7d525 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:21:16, skipping insertion in model container [2023-11-12 02:21:16,126 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:21:16" (3/3) ... [2023-11-12 02:21:16,128 INFO L112 eAbstractionObserver]: Analyzing ICFG read_write_lock-1.i [2023-11-12 02:21:16,139 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-12 02:21:16,151 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:21:16,152 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-11-12 02:21:16,152 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-12 02:21:16,324 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-11-12 02:21:16,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 133 places, 124 transitions, 276 flow [2023-11-12 02:21:16,448 INFO L124 PetriNetUnfolderBase]: 4/120 cut-off events. [2023-11-12 02:21:16,449 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-12 02:21:16,458 INFO L83 FinitePrefix]: Finished finitePrefix Result has 137 conditions, 120 events. 4/120 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 162 event pairs, 0 based on Foata normal form. 0/108 useless extension candidates. Maximal degree in co-relation 83. Up to 2 conditions per place. [2023-11-12 02:21:16,458 INFO L82 GeneralOperation]: Start removeDead. Operand has 133 places, 124 transitions, 276 flow [2023-11-12 02:21:16,464 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 115 places, 106 transitions, 233 flow [2023-11-12 02:21:16,468 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-12 02:21:16,482 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 115 places, 106 transitions, 233 flow [2023-11-12 02:21:16,487 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 115 places, 106 transitions, 233 flow [2023-11-12 02:21:16,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 115 places, 106 transitions, 233 flow [2023-11-12 02:21:16,541 INFO L124 PetriNetUnfolderBase]: 4/106 cut-off events. [2023-11-12 02:21:16,541 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-12 02:21:16,543 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122 conditions, 106 events. 4/106 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 162 event pairs, 0 based on Foata normal form. 0/94 useless extension candidates. Maximal degree in co-relation 83. Up to 2 conditions per place. [2023-11-12 02:21:16,547 INFO L119 LiptonReduction]: Number of co-enabled transitions 3848 [2023-11-12 02:21:20,769 INFO L134 LiptonReduction]: Checked pairs total: 10430 [2023-11-12 02:21:20,770 INFO L136 LiptonReduction]: Total number of compositions: 82 [2023-11-12 02:21:20,786 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:21:20,793 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;@2b466a00, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:21:20,794 INFO L358 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2023-11-12 02:21:20,798 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-12 02:21:20,798 INFO L124 PetriNetUnfolderBase]: 0/7 cut-off events. [2023-11-12 02:21:20,798 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:21:20,798 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:21:20,799 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-12 02:21:20,800 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting readerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [readerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-12 02:21:20,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:21:20,805 INFO L85 PathProgramCache]: Analyzing trace with hash 415316145, now seen corresponding path program 1 times [2023-11-12 02:21:20,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:21:20,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868158622] [2023-11-12 02:21:20,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:21:20,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:21:20,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:21:21,144 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 02:21:21,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:21:21,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868158622] [2023-11-12 02:21:21,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868158622] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:21:21,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:21:21,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:21:21,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941423945] [2023-11-12 02:21:21,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:21:21,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:21:21,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:21:21,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:21:21,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:21:21,198 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 206 [2023-11-12 02:21:21,201 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 43 transitions, 107 flow. Second operand has 3 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 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 02:21:21,201 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:21:21,201 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 206 [2023-11-12 02:21:21,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:21:22,624 INFO L124 PetriNetUnfolderBase]: 5759/9235 cut-off events. [2023-11-12 02:21:22,624 INFO L125 PetriNetUnfolderBase]: For 823/823 co-relation queries the response was YES. [2023-11-12 02:21:22,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18582 conditions, 9235 events. 5759/9235 cut-off events. For 823/823 co-relation queries the response was YES. Maximal size of possible extension queue 622. Compared 65759 event pairs, 2676 based on Foata normal form. 761/8370 useless extension candidates. Maximal degree in co-relation 13677. Up to 4954 conditions per place. [2023-11-12 02:21:22,716 INFO L140 encePairwiseOnDemand]: 189/206 looper letters, 47 selfloop transitions, 7 changer transitions 0/62 dead transitions. [2023-11-12 02:21:22,716 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 62 transitions, 268 flow [2023-11-12 02:21:22,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:21:22,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:21:22,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 357 transitions. [2023-11-12 02:21:22,732 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5776699029126213 [2023-11-12 02:21:22,733 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 357 transitions. [2023-11-12 02:21:22,733 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 357 transitions. [2023-11-12 02:21:22,735 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:21:22,738 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 357 transitions. [2023-11-12 02:21:22,742 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 119.0) internal successors, (357), 3 states have internal predecessors, (357), 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 02:21:22,748 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 206.0) internal successors, (824), 4 states have internal predecessors, (824), 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 02:21:22,749 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 206.0) internal successors, (824), 4 states have internal predecessors, (824), 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 02:21:22,751 INFO L175 Difference]: Start difference. First operand has 54 places, 43 transitions, 107 flow. Second operand 3 states and 357 transitions. [2023-11-12 02:21:22,752 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 62 transitions, 268 flow [2023-11-12 02:21:22,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 62 transitions, 246 flow, removed 0 selfloop flow, removed 7 redundant places. [2023-11-12 02:21:22,836 INFO L231 Difference]: Finished difference. Result has 51 places, 47 transitions, 158 flow [2023-11-12 02:21:22,838 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=158, PETRI_PLACES=51, PETRI_TRANSITIONS=47} [2023-11-12 02:21:22,842 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -3 predicate places. [2023-11-12 02:21:22,842 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 47 transitions, 158 flow [2023-11-12 02:21:22,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 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 02:21:22,843 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:21:22,843 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:21:22,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 02:21:22,844 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting readerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [readerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-12 02:21:22,844 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:21:22,844 INFO L85 PathProgramCache]: Analyzing trace with hash 726458282, now seen corresponding path program 1 times [2023-11-12 02:21:22,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:21:22,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805422954] [2023-11-12 02:21:22,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:21:22,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:21:22,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:21:23,051 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 02:21:23,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:21:23,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805422954] [2023-11-12 02:21:23,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805422954] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:21:23,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:21:23,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:21:23,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358393260] [2023-11-12 02:21:23,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:21:23,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:21:23,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:21:23,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:21:23,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:21:23,058 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 206 [2023-11-12 02:21:23,059 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 47 transitions, 158 flow. Second operand has 4 states, 4 states have (on average 99.5) internal successors, (398), 4 states have internal predecessors, (398), 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 02:21:23,059 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:21:23,059 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 206 [2023-11-12 02:21:23,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:21:23,830 INFO L124 PetriNetUnfolderBase]: 2746/4941 cut-off events. [2023-11-12 02:21:23,831 INFO L125 PetriNetUnfolderBase]: For 1746/1746 co-relation queries the response was YES. [2023-11-12 02:21:23,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11821 conditions, 4941 events. 2746/4941 cut-off events. For 1746/1746 co-relation queries the response was YES. Maximal size of possible extension queue 306. Compared 35815 event pairs, 864 based on Foata normal form. 440/4561 useless extension candidates. Maximal degree in co-relation 2447. Up to 2147 conditions per place. [2023-11-12 02:21:23,876 INFO L140 encePairwiseOnDemand]: 191/206 looper letters, 60 selfloop transitions, 11 changer transitions 6/85 dead transitions. [2023-11-12 02:21:23,877 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 85 transitions, 416 flow [2023-11-12 02:21:23,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:21:23,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-12 02:21:23,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 471 transitions. [2023-11-12 02:21:23,881 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5716019417475728 [2023-11-12 02:21:23,882 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 471 transitions. [2023-11-12 02:21:23,882 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 471 transitions. [2023-11-12 02:21:23,883 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:21:23,883 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 471 transitions. [2023-11-12 02:21:23,885 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 117.75) internal successors, (471), 4 states have internal predecessors, (471), 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 02:21:23,889 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 206.0) internal successors, (1030), 5 states have internal predecessors, (1030), 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 02:21:23,890 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 206.0) internal successors, (1030), 5 states have internal predecessors, (1030), 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 02:21:23,890 INFO L175 Difference]: Start difference. First operand has 51 places, 47 transitions, 158 flow. Second operand 4 states and 471 transitions. [2023-11-12 02:21:23,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 85 transitions, 416 flow [2023-11-12 02:21:23,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 85 transitions, 402 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:21:23,901 INFO L231 Difference]: Finished difference. Result has 54 places, 49 transitions, 207 flow [2023-11-12 02:21:23,901 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=207, PETRI_PLACES=54, PETRI_TRANSITIONS=49} [2023-11-12 02:21:23,902 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 0 predicate places. [2023-11-12 02:21:23,902 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 49 transitions, 207 flow [2023-11-12 02:21:23,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 99.5) internal successors, (398), 4 states have internal predecessors, (398), 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 02:21:23,903 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:21:23,904 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:21:23,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 02:21:23,904 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting readerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [readerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-12 02:21:23,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:21:23,905 INFO L85 PathProgramCache]: Analyzing trace with hash 726458281, now seen corresponding path program 1 times [2023-11-12 02:21:23,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:21:23,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146909071] [2023-11-12 02:21:23,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:21:23,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:21:23,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:21:24,017 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 02:21:24,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:21:24,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146909071] [2023-11-12 02:21:24,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146909071] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:21:24,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:21:24,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:21:24,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931145250] [2023-11-12 02:21:24,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:21:24,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:21:24,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:21:24,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:21:24,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:21:24,025 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 206 [2023-11-12 02:21:24,026 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 49 transitions, 207 flow. Second operand has 4 states, 4 states have (on average 99.5) internal successors, (398), 4 states have internal predecessors, (398), 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 02:21:24,026 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:21:24,026 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 206 [2023-11-12 02:21:24,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:21:24,591 INFO L124 PetriNetUnfolderBase]: 1963/3936 cut-off events. [2023-11-12 02:21:24,592 INFO L125 PetriNetUnfolderBase]: For 2584/2584 co-relation queries the response was YES. [2023-11-12 02:21:24,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10000 conditions, 3936 events. 1963/3936 cut-off events. For 2584/2584 co-relation queries the response was YES. Maximal size of possible extension queue 261. Compared 30244 event pairs, 444 based on Foata normal form. 276/4163 useless extension candidates. Maximal degree in co-relation 2204. Up to 1230 conditions per place. [2023-11-12 02:21:24,621 INFO L140 encePairwiseOnDemand]: 195/206 looper letters, 54 selfloop transitions, 11 changer transitions 2/75 dead transitions. [2023-11-12 02:21:24,621 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 75 transitions, 404 flow [2023-11-12 02:21:24,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:21:24,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-12 02:21:24,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 457 transitions. [2023-11-12 02:21:24,624 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5546116504854369 [2023-11-12 02:21:24,624 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 457 transitions. [2023-11-12 02:21:24,624 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 457 transitions. [2023-11-12 02:21:24,624 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:21:24,625 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 457 transitions. [2023-11-12 02:21:24,626 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 114.25) internal successors, (457), 4 states have internal predecessors, (457), 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 02:21:24,629 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 206.0) internal successors, (1030), 5 states have internal predecessors, (1030), 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 02:21:24,630 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 206.0) internal successors, (1030), 5 states have internal predecessors, (1030), 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 02:21:24,630 INFO L175 Difference]: Start difference. First operand has 54 places, 49 transitions, 207 flow. Second operand 4 states and 457 transitions. [2023-11-12 02:21:24,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 75 transitions, 404 flow [2023-11-12 02:21:24,633 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 75 transitions, 397 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:21:24,635 INFO L231 Difference]: Finished difference. Result has 55 places, 47 transitions, 220 flow [2023-11-12 02:21:24,636 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=220, PETRI_PLACES=55, PETRI_TRANSITIONS=47} [2023-11-12 02:21:24,636 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 1 predicate places. [2023-11-12 02:21:24,637 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 47 transitions, 220 flow [2023-11-12 02:21:24,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 99.5) internal successors, (398), 4 states have internal predecessors, (398), 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 02:21:24,637 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:21:24,638 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:21:24,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-12 02:21:24,638 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting readerErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [readerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-12 02:21:24,639 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:21:24,639 INFO L85 PathProgramCache]: Analyzing trace with hash 891924429, now seen corresponding path program 1 times [2023-11-12 02:21:24,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:21:24,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189491130] [2023-11-12 02:21:24,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:21:24,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:21:24,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:21:24,699 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 02:21:24,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:21:24,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189491130] [2023-11-12 02:21:24,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189491130] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:21:24,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:21:24,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:21:24,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194598714] [2023-11-12 02:21:24,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:21:24,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:21:24,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:21:24,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:21:24,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:21:24,705 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 206 [2023-11-12 02:21:24,706 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 47 transitions, 220 flow. Second operand has 3 states, 3 states have (on average 101.0) internal successors, (303), 3 states have internal predecessors, (303), 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 02:21:24,706 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:21:24,706 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 206 [2023-11-12 02:21:24,706 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:21:25,091 INFO L124 PetriNetUnfolderBase]: 1552/3008 cut-off events. [2023-11-12 02:21:25,091 INFO L125 PetriNetUnfolderBase]: For 3557/3557 co-relation queries the response was YES. [2023-11-12 02:21:25,100 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8267 conditions, 3008 events. 1552/3008 cut-off events. For 3557/3557 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 21495 event pairs, 1362 based on Foata normal form. 152/3051 useless extension candidates. Maximal degree in co-relation 2297. Up to 2583 conditions per place. [2023-11-12 02:21:25,110 INFO L140 encePairwiseOnDemand]: 203/206 looper letters, 32 selfloop transitions, 1 changer transitions 2/43 dead transitions. [2023-11-12 02:21:25,110 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 43 transitions, 258 flow [2023-11-12 02:21:25,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:21:25,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:21:25,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 322 transitions. [2023-11-12 02:21:25,112 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5210355987055016 [2023-11-12 02:21:25,112 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 322 transitions. [2023-11-12 02:21:25,113 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 322 transitions. [2023-11-12 02:21:25,113 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:21:25,113 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 322 transitions. [2023-11-12 02:21:25,114 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 107.33333333333333) internal successors, (322), 3 states have internal predecessors, (322), 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 02:21:25,116 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 206.0) internal successors, (824), 4 states have internal predecessors, (824), 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 02:21:25,117 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 206.0) internal successors, (824), 4 states have internal predecessors, (824), 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 02:21:25,117 INFO L175 Difference]: Start difference. First operand has 55 places, 47 transitions, 220 flow. Second operand 3 states and 322 transitions. [2023-11-12 02:21:25,117 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 43 transitions, 258 flow [2023-11-12 02:21:25,122 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 43 transitions, 236 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-12 02:21:25,123 INFO L231 Difference]: Finished difference. Result has 52 places, 41 transitions, 156 flow [2023-11-12 02:21:25,124 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=156, PETRI_PLACES=52, PETRI_TRANSITIONS=41} [2023-11-12 02:21:25,125 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -2 predicate places. [2023-11-12 02:21:25,125 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 41 transitions, 156 flow [2023-11-12 02:21:25,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 101.0) internal successors, (303), 3 states have internal predecessors, (303), 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 02:21:25,126 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:21:25,126 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:21:25,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-12 02:21:25,126 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting readerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [readerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-12 02:21:25,127 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:21:25,127 INFO L85 PathProgramCache]: Analyzing trace with hash -1638721020, now seen corresponding path program 1 times [2023-11-12 02:21:25,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:21:25,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932180343] [2023-11-12 02:21:25,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:21:25,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:21:25,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:21:25,181 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 02:21:25,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:21:25,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932180343] [2023-11-12 02:21:25,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932180343] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:21:25,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:21:25,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:21:25,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864291250] [2023-11-12 02:21:25,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:21:25,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:21:25,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:21:25,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:21:25,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:21:25,187 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 206 [2023-11-12 02:21:25,188 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 41 transitions, 156 flow. Second operand has 3 states, 3 states have (on average 101.0) internal successors, (303), 3 states have internal predecessors, (303), 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 02:21:25,188 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:21:25,188 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 206 [2023-11-12 02:21:25,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:21:25,462 INFO L124 PetriNetUnfolderBase]: 1234/2418 cut-off events. [2023-11-12 02:21:25,462 INFO L125 PetriNetUnfolderBase]: For 1450/1450 co-relation queries the response was YES. [2023-11-12 02:21:25,468 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6258 conditions, 2418 events. 1234/2418 cut-off events. For 1450/1450 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 16393 event pairs, 1110 based on Foata normal form. 56/2373 useless extension candidates. Maximal degree in co-relation 6247. Up to 2053 conditions per place. [2023-11-12 02:21:25,476 INFO L140 encePairwiseOnDemand]: 203/206 looper letters, 30 selfloop transitions, 1 changer transitions 0/39 dead transitions. [2023-11-12 02:21:25,476 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 39 transitions, 206 flow [2023-11-12 02:21:25,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:21:25,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:21:25,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 320 transitions. [2023-11-12 02:21:25,478 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.517799352750809 [2023-11-12 02:21:25,479 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 320 transitions. [2023-11-12 02:21:25,479 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 320 transitions. [2023-11-12 02:21:25,479 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:21:25,479 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 320 transitions. [2023-11-12 02:21:25,480 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 states have internal predecessors, (320), 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 02:21:25,482 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 206.0) internal successors, (824), 4 states have internal predecessors, (824), 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 02:21:25,483 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 206.0) internal successors, (824), 4 states have internal predecessors, (824), 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 02:21:25,483 INFO L175 Difference]: Start difference. First operand has 52 places, 41 transitions, 156 flow. Second operand 3 states and 320 transitions. [2023-11-12 02:21:25,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 39 transitions, 206 flow [2023-11-12 02:21:25,485 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 39 transitions, 205 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:21:25,486 INFO L231 Difference]: Finished difference. Result has 51 places, 39 transitions, 145 flow [2023-11-12 02:21:25,486 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=143, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=145, PETRI_PLACES=51, PETRI_TRANSITIONS=39} [2023-11-12 02:21:25,487 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -3 predicate places. [2023-11-12 02:21:25,487 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 39 transitions, 145 flow [2023-11-12 02:21:25,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 101.0) internal successors, (303), 3 states have internal predecessors, (303), 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 02:21:25,488 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:21:25,488 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:21:25,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-12 02:21:25,489 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting readerErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [readerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-12 02:21:25,489 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:21:25,489 INFO L85 PathProgramCache]: Analyzing trace with hash -748845871, now seen corresponding path program 1 times [2023-11-12 02:21:25,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:21:25,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433966190] [2023-11-12 02:21:25,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:21:25,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:21:25,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:21:25,583 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 02:21:25,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:21:25,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433966190] [2023-11-12 02:21:25,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433966190] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:21:25,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:21:25,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:21:25,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967299792] [2023-11-12 02:21:25,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:21:25,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:21:25,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:21:25,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:21:25,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:21:25,589 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 206 [2023-11-12 02:21:25,590 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 39 transitions, 145 flow. Second operand has 5 states, 5 states have (on average 99.8) internal successors, (499), 5 states have internal predecessors, (499), 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 02:21:25,590 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:21:25,590 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 206 [2023-11-12 02:21:25,590 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:21:25,976 INFO L124 PetriNetUnfolderBase]: 1314/2937 cut-off events. [2023-11-12 02:21:25,976 INFO L125 PetriNetUnfolderBase]: For 1409/1409 co-relation queries the response was YES. [2023-11-12 02:21:25,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6970 conditions, 2937 events. 1314/2937 cut-off events. For 1409/1409 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 22849 event pairs, 258 based on Foata normal form. 56/2977 useless extension candidates. Maximal degree in co-relation 6958. Up to 860 conditions per place. [2023-11-12 02:21:25,992 INFO L140 encePairwiseOnDemand]: 197/206 looper letters, 48 selfloop transitions, 7 changer transitions 15/78 dead transitions. [2023-11-12 02:21:25,992 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 78 transitions, 394 flow [2023-11-12 02:21:25,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:21:25,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-12 02:21:25,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 557 transitions. [2023-11-12 02:21:25,995 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5407766990291262 [2023-11-12 02:21:25,995 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 557 transitions. [2023-11-12 02:21:25,995 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 557 transitions. [2023-11-12 02:21:25,996 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:21:25,996 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 557 transitions. [2023-11-12 02:21:25,998 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 111.4) internal successors, (557), 5 states have internal predecessors, (557), 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 02:21:26,001 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 206.0) internal successors, (1236), 6 states have internal predecessors, (1236), 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 02:21:26,001 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 206.0) internal successors, (1236), 6 states have internal predecessors, (1236), 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 02:21:26,002 INFO L175 Difference]: Start difference. First operand has 51 places, 39 transitions, 145 flow. Second operand 5 states and 557 transitions. [2023-11-12 02:21:26,002 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 78 transitions, 394 flow [2023-11-12 02:21:26,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 78 transitions, 393 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:21:26,005 INFO L231 Difference]: Finished difference. Result has 55 places, 39 transitions, 170 flow [2023-11-12 02:21:26,005 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=170, PETRI_PLACES=55, PETRI_TRANSITIONS=39} [2023-11-12 02:21:26,006 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 1 predicate places. [2023-11-12 02:21:26,007 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 39 transitions, 170 flow [2023-11-12 02:21:26,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 99.8) internal successors, (499), 5 states have internal predecessors, (499), 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 02:21:26,007 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:21:26,007 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:21:26,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-12 02:21:26,008 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting readerErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [readerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-12 02:21:26,008 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:21:26,008 INFO L85 PathProgramCache]: Analyzing trace with hash 1981470051, now seen corresponding path program 2 times [2023-11-12 02:21:26,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:21:26,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128951604] [2023-11-12 02:21:26,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:21:26,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:21:26,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:21:26,092 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 02:21:26,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:21:26,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128951604] [2023-11-12 02:21:26,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128951604] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:21:26,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:21:26,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:21:26,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015039265] [2023-11-12 02:21:26,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:21:26,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:21:26,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:21:26,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:21:26,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:21:26,097 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 206 [2023-11-12 02:21:26,097 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 39 transitions, 170 flow. Second operand has 5 states, 5 states have (on average 99.8) internal successors, (499), 5 states have internal predecessors, (499), 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 02:21:26,098 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:21:26,098 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 206 [2023-11-12 02:21:26,098 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:21:26,378 INFO L124 PetriNetUnfolderBase]: 792/1969 cut-off events. [2023-11-12 02:21:26,378 INFO L125 PetriNetUnfolderBase]: For 2103/2103 co-relation queries the response was YES. [2023-11-12 02:21:26,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4950 conditions, 1969 events. 792/1969 cut-off events. For 2103/2103 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 14747 event pairs, 162 based on Foata normal form. 56/2018 useless extension candidates. Maximal degree in co-relation 4936. Up to 820 conditions per place. [2023-11-12 02:21:26,386 INFO L140 encePairwiseOnDemand]: 197/206 looper letters, 0 selfloop transitions, 0 changer transitions 63/63 dead transitions. [2023-11-12 02:21:26,386 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 63 transitions, 324 flow [2023-11-12 02:21:26,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:21:26,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-12 02:21:26,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 542 transitions. [2023-11-12 02:21:26,393 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5262135922330097 [2023-11-12 02:21:26,393 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 542 transitions. [2023-11-12 02:21:26,393 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 542 transitions. [2023-11-12 02:21:26,394 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:21:26,394 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 542 transitions. [2023-11-12 02:21:26,396 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 108.4) internal successors, (542), 5 states have internal predecessors, (542), 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 02:21:26,399 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 206.0) internal successors, (1236), 6 states have internal predecessors, (1236), 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 02:21:26,399 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 206.0) internal successors, (1236), 6 states have internal predecessors, (1236), 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 02:21:26,400 INFO L175 Difference]: Start difference. First operand has 55 places, 39 transitions, 170 flow. Second operand 5 states and 542 transitions. [2023-11-12 02:21:26,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 63 transitions, 324 flow [2023-11-12 02:21:26,405 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 63 transitions, 299 flow, removed 2 selfloop flow, removed 5 redundant places. [2023-11-12 02:21:26,406 INFO L231 Difference]: Finished difference. Result has 51 places, 0 transitions, 0 flow [2023-11-12 02:21:26,406 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=125, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=51, PETRI_TRANSITIONS=0} [2023-11-12 02:21:26,406 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -3 predicate places. [2023-11-12 02:21:26,407 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 0 transitions, 0 flow [2023-11-12 02:21:26,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 99.8) internal successors, (499), 5 states have internal predecessors, (499), 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 02:21:26,410 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 16 remaining) [2023-11-12 02:21:26,410 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 16 remaining) [2023-11-12 02:21:26,410 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 16 remaining) [2023-11-12 02:21:26,411 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 16 remaining) [2023-11-12 02:21:26,411 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (11 of 16 remaining) [2023-11-12 02:21:26,411 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 16 remaining) [2023-11-12 02:21:26,411 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 16 remaining) [2023-11-12 02:21:26,412 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 16 remaining) [2023-11-12 02:21:26,412 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 16 remaining) [2023-11-12 02:21:26,412 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 16 remaining) [2023-11-12 02:21:26,414 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 16 remaining) [2023-11-12 02:21:26,414 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 16 remaining) [2023-11-12 02:21:26,414 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 16 remaining) [2023-11-12 02:21:26,414 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 16 remaining) [2023-11-12 02:21:26,415 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 16 remaining) [2023-11-12 02:21:26,415 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 16 remaining) [2023-11-12 02:21:26,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-12 02:21:26,415 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1] [2023-11-12 02:21:26,422 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-12 02:21:26,423 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-11-12 02:21:26,433 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 02:21:26 BasicIcfg [2023-11-12 02:21:26,433 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-12 02:21:26,433 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-12 02:21:26,434 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-12 02:21:26,434 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-12 02:21:26,434 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:21:16" (3/4) ... [2023-11-12 02:21:26,436 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-12 02:21:26,438 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure reader [2023-11-12 02:21:26,439 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure writer [2023-11-12 02:21:26,444 INFO L944 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2023-11-12 02:21:26,448 INFO L944 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-12 02:21:26,448 INFO L944 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-12 02:21:26,448 INFO L944 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-12 02:21:26,538 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df02e7da-87c8-4625-b8aa-d6caadb7b470/bin/uautomizer-verify-uTZkv6EMXl/witness.graphml [2023-11-12 02:21:26,538 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df02e7da-87c8-4625-b8aa-d6caadb7b470/bin/uautomizer-verify-uTZkv6EMXl/witness.yml [2023-11-12 02:21:26,539 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-12 02:21:26,539 INFO L158 Benchmark]: Toolchain (without parser) took 11831.49ms. Allocated memory was 142.6MB in the beginning and 429.9MB in the end (delta: 287.3MB). Free memory was 109.0MB in the beginning and 305.5MB in the end (delta: -196.4MB). Peak memory consumption was 94.0MB. Max. memory is 16.1GB. [2023-11-12 02:21:26,540 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 117.4MB. Free memory is still 70.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-12 02:21:26,540 INFO L158 Benchmark]: CACSL2BoogieTranslator took 587.08ms. Allocated memory is still 142.6MB. Free memory was 108.6MB in the beginning and 88.6MB in the end (delta: 20.0MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-12 02:21:26,540 INFO L158 Benchmark]: Boogie Procedure Inliner took 92.29ms. Allocated memory is still 142.6MB. Free memory was 88.6MB in the beginning and 86.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-12 02:21:26,541 INFO L158 Benchmark]: Boogie Preprocessor took 59.91ms. Allocated memory is still 142.6MB. Free memory was 86.1MB in the beginning and 84.8MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-12 02:21:26,541 INFO L158 Benchmark]: RCFGBuilder took 649.43ms. Allocated memory was 142.6MB in the beginning and 192.9MB in the end (delta: 50.3MB). Free memory was 84.8MB in the beginning and 161.6MB in the end (delta: -76.8MB). Peak memory consumption was 22.0MB. Max. memory is 16.1GB. [2023-11-12 02:21:26,541 INFO L158 Benchmark]: TraceAbstraction took 10328.07ms. Allocated memory was 192.9MB in the beginning and 429.9MB in the end (delta: 237.0MB). Free memory was 160.7MB in the beginning and 309.7MB in the end (delta: -149.0MB). Peak memory consumption was 247.0MB. Max. memory is 16.1GB. [2023-11-12 02:21:26,542 INFO L158 Benchmark]: Witness Printer took 105.20ms. Allocated memory is still 429.9MB. Free memory was 309.7MB in the beginning and 305.5MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-12 02:21:26,545 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 117.4MB. Free memory is still 70.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 587.08ms. Allocated memory is still 142.6MB. Free memory was 108.6MB in the beginning and 88.6MB in the end (delta: 20.0MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 92.29ms. Allocated memory is still 142.6MB. Free memory was 88.6MB in the beginning and 86.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 59.91ms. Allocated memory is still 142.6MB. Free memory was 86.1MB in the beginning and 84.8MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 649.43ms. Allocated memory was 142.6MB in the beginning and 192.9MB in the end (delta: 50.3MB). Free memory was 84.8MB in the beginning and 161.6MB in the end (delta: -76.8MB). Peak memory consumption was 22.0MB. Max. memory is 16.1GB. * TraceAbstraction took 10328.07ms. Allocated memory was 192.9MB in the beginning and 429.9MB in the end (delta: 237.0MB). Free memory was 160.7MB in the beginning and 309.7MB in the end (delta: -149.0MB). Peak memory consumption was 247.0MB. Max. memory is 16.1GB. * Witness Printer took 105.20ms. Allocated memory is still 429.9MB. Free memory was 309.7MB in the beginning and 305.5MB 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: 4.3s, 115 PlacesBefore, 54 PlacesAfterwards, 106 TransitionsBefore, 43 TransitionsAfterwards, 3848 CoEnabledTransitionPairs, 6 FixpointIterations, 18 TrivialSequentialCompositions, 60 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 2 ConcurrentYvCompositions, 2 ChoiceCompositions, 82 TotalNumberOfCompositions, 10430 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 5617, independent: 5413, independent conditional: 0, independent unconditional: 5413, dependent: 204, dependent conditional: 0, dependent unconditional: 204, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 2114, independent: 2075, independent conditional: 0, independent unconditional: 2075, dependent: 39, dependent conditional: 0, dependent unconditional: 39, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 5617, independent: 3338, independent conditional: 0, independent unconditional: 3338, dependent: 165, dependent conditional: 0, dependent unconditional: 165, unknown: 2114, unknown conditional: 0, unknown unconditional: 2114] , Statistics on independence cache: Total cache size (in pairs): 283, Positive cache size: 265, Positive conditional cache size: 0, Positive unconditional cache size: 265, Negative cache size: 18, Negative conditional cache size: 0, Negative unconditional cache size: 18, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 711]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 711]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 714]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 714]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 153 locations, 16 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: 10.1s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 4.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.4s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 203 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 193 mSDsluCounter, 4 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 65 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 567 IncrementalHoareTripleChecker+Invalid, 632 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 65 mSolverCounterUnsat, 4 mSDtfsCounter, 567 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=220occurred in iteration=3, InterpolantAutomatonStates: 27, 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, 0.7s InterpolantComputationTime, 95 NumberOfCodeBlocks, 95 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 88 ConstructedInterpolants, 0 QuantifiedInterpolants, 214 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 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 4 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-12 02:21:26,585 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df02e7da-87c8-4625-b8aa-d6caadb7b470/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