./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread-atomic/read_write_lock-2.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_681aa0d4-d543-4328-8570-1d59d76865c6/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_681aa0d4-d543-4328-8570-1d59d76865c6/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_681aa0d4-d543-4328-8570-1d59d76865c6/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_681aa0d4-d543-4328-8570-1d59d76865c6/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-atomic/read_write_lock-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_681aa0d4-d543-4328-8570-1d59d76865c6/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_681aa0d4-d543-4328-8570-1d59d76865c6/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 3e2f466b16db44ce2fec1aabf9e70b4ab734ef2801c32e66d10c5bcbcceb5301 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:18:05,964 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:18:06,146 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_681aa0d4-d543-4328-8570-1d59d76865c6/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-12 02:18:06,152 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:18:06,155 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:18:06,207 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:18:06,208 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:18:06,208 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:18:06,209 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:18:06,210 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:18:06,211 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:18:06,212 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:18:06,213 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:18:06,214 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:18:06,214 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 02:18:06,215 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:18:06,216 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:18:06,216 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:18:06,217 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:18:06,218 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 02:18:06,218 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:18:06,222 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 02:18:06,222 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-12 02:18:06,223 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 02:18:06,223 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:18:06,224 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 02:18:06,225 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:18:06,225 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:18:06,226 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:18:06,226 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:18:06,227 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:18:06,227 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:18:06,228 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:18:06,228 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 02:18:06,229 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:18:06,229 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:18:06,229 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:18:06,229 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 02:18:06,230 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:18:06,230 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:18:06,230 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:18:06,231 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_681aa0d4-d543-4328-8570-1d59d76865c6/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_681aa0d4-d543-4328-8570-1d59d76865c6/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3e2f466b16db44ce2fec1aabf9e70b4ab734ef2801c32e66d10c5bcbcceb5301 [2023-11-12 02:18:06,612 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:18:06,643 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:18:06,646 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:18:06,647 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:18:06,648 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:18:06,649 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_681aa0d4-d543-4328-8570-1d59d76865c6/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/pthread-atomic/read_write_lock-2.i [2023-11-12 02:18:09,921 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:18:10,337 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:18:10,339 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_681aa0d4-d543-4328-8570-1d59d76865c6/sv-benchmarks/c/pthread-atomic/read_write_lock-2.i [2023-11-12 02:18:10,367 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_681aa0d4-d543-4328-8570-1d59d76865c6/bin/uautomizer-verify-uTZkv6EMXl/data/cf9ca7ca4/6a71c04f9d9242d6bfbde09583506146/FLAG5fdd28abf [2023-11-12 02:18:10,388 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_681aa0d4-d543-4328-8570-1d59d76865c6/bin/uautomizer-verify-uTZkv6EMXl/data/cf9ca7ca4/6a71c04f9d9242d6bfbde09583506146 [2023-11-12 02:18:10,396 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:18:10,398 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:18:10,402 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:18:10,402 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:18:10,408 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:18:10,409 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:18:10" (1/1) ... [2023-11-12 02:18:10,410 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ff081fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:18:10, skipping insertion in model container [2023-11-12 02:18:10,411 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:18:10" (1/1) ... [2023-11-12 02:18:10,479 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:18:10,766 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-12 02:18:11,032 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:18:11,046 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:18:11,081 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-12 02:18:11,129 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:18:11,174 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:18:11,175 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:18:11,175 WARN L672 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:18:11,183 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:18:11,184 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:18:11 WrapperNode [2023-11-12 02:18:11,185 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:18:11,186 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:18:11,186 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:18:11,186 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:18:11,195 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:18:11" (1/1) ... [2023-11-12 02:18:11,226 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:18:11" (1/1) ... [2023-11-12 02:18:11,271 INFO L138 Inliner]: procedures = 174, calls = 52, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 125 [2023-11-12 02:18:11,271 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:18:11,272 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:18:11,272 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:18:11,272 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:18:11,285 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:18:11" (1/1) ... [2023-11-12 02:18:11,285 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:18:11" (1/1) ... [2023-11-12 02:18:11,289 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:18:11" (1/1) ... [2023-11-12 02:18:11,293 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:18:11" (1/1) ... [2023-11-12 02:18:11,301 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:18:11" (1/1) ... [2023-11-12 02:18:11,304 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:18:11" (1/1) ... [2023-11-12 02:18:11,307 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:18:11" (1/1) ... [2023-11-12 02:18:11,309 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:18:11" (1/1) ... [2023-11-12 02:18:11,313 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:18:11,314 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:18:11,315 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:18:11,315 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:18:11,316 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:18:11" (1/1) ... [2023-11-12 02:18:11,325 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:18:11,346 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_681aa0d4-d543-4328-8570-1d59d76865c6/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:18:11,362 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_681aa0d4-d543-4328-8570-1d59d76865c6/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:18:11,397 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_681aa0d4-d543-4328-8570-1d59d76865c6/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:18:11,417 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 02:18:11,418 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 02:18:11,418 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-12 02:18:11,418 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:18:11,419 INFO L130 BoogieDeclarations]: Found specification of procedure reader [2023-11-12 02:18:11,419 INFO L138 BoogieDeclarations]: Found implementation of procedure reader [2023-11-12 02:18:11,419 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 02:18:11,419 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 02:18:11,423 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 02:18:11,424 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-12 02:18:11,425 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:18:11,425 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:18:11,425 INFO L130 BoogieDeclarations]: Found specification of procedure writer [2023-11-12 02:18:11,425 INFO L138 BoogieDeclarations]: Found implementation of procedure writer [2023-11-12 02:18:11,428 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 02:18:11,686 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:18:11,688 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:18:12,043 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:18:12,115 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:18:12,116 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-12 02:18:12,119 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:18:12 BoogieIcfgContainer [2023-11-12 02:18:12,119 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:18:12,123 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:18:12,123 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:18:12,128 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:18:12,128 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:18:10" (1/3) ... [2023-11-12 02:18:12,129 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72f2414 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:18:12, skipping insertion in model container [2023-11-12 02:18:12,130 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:18:11" (2/3) ... [2023-11-12 02:18:12,130 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72f2414 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:18:12, skipping insertion in model container [2023-11-12 02:18:12,130 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:18:12" (3/3) ... [2023-11-12 02:18:12,132 INFO L112 eAbstractionObserver]: Analyzing ICFG read_write_lock-2.i [2023-11-12 02:18:12,143 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-12 02:18:12,155 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:18:12,155 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-11-12 02:18:12,155 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-12 02:18:12,271 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-11-12 02:18:12,330 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 135 places, 126 transitions, 280 flow [2023-11-12 02:18:12,415 INFO L124 PetriNetUnfolderBase]: 4/122 cut-off events. [2023-11-12 02:18:12,415 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-12 02:18:12,425 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139 conditions, 122 events. 4/122 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 170 event pairs, 0 based on Foata normal form. 0/110 useless extension candidates. Maximal degree in co-relation 85. Up to 2 conditions per place. [2023-11-12 02:18:12,426 INFO L82 GeneralOperation]: Start removeDead. Operand has 135 places, 126 transitions, 280 flow [2023-11-12 02:18:12,432 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 117 places, 108 transitions, 237 flow [2023-11-12 02:18:12,436 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-12 02:18:12,448 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 117 places, 108 transitions, 237 flow [2023-11-12 02:18:12,455 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 117 places, 108 transitions, 237 flow [2023-11-12 02:18:12,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 117 places, 108 transitions, 237 flow [2023-11-12 02:18:12,512 INFO L124 PetriNetUnfolderBase]: 4/108 cut-off events. [2023-11-12 02:18:12,512 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-12 02:18:12,515 INFO L83 FinitePrefix]: Finished finitePrefix Result has 124 conditions, 108 events. 4/108 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 167 event pairs, 0 based on Foata normal form. 0/96 useless extension candidates. Maximal degree in co-relation 85. Up to 2 conditions per place. [2023-11-12 02:18:12,519 INFO L119 LiptonReduction]: Number of co-enabled transitions 4046 [2023-11-12 02:18:16,199 INFO L134 LiptonReduction]: Checked pairs total: 10385 [2023-11-12 02:18:16,200 INFO L136 LiptonReduction]: Total number of compositions: 78 [2023-11-12 02:18:16,215 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:18:16,221 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;@56b26480, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:18:16,222 INFO L358 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2023-11-12 02:18:16,226 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-12 02:18:16,226 INFO L124 PetriNetUnfolderBase]: 0/8 cut-off events. [2023-11-12 02:18:16,226 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:18:16,226 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:18:16,227 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-12 02:18:16,227 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting readerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [readerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-12 02:18:16,231 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:18:16,232 INFO L85 PathProgramCache]: Analyzing trace with hash 409683641, now seen corresponding path program 1 times [2023-11-12 02:18:16,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:18:16,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893762316] [2023-11-12 02:18:16,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:18:16,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:18:16,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:18:16,544 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 02:18:16,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:18:16,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893762316] [2023-11-12 02:18:16,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893762316] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:18:16,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:18:16,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:18:16,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593953670] [2023-11-12 02:18:16,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:18:16,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:18:16,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:18:16,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:18:16,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:18:16,606 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 204 [2023-11-12 02:18:16,609 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 44 transitions, 109 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 02:18:16,609 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:18:16,610 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 204 [2023-11-12 02:18:16,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:18:18,317 INFO L124 PetriNetUnfolderBase]: 7768/12130 cut-off events. [2023-11-12 02:18:18,318 INFO L125 PetriNetUnfolderBase]: For 1241/1241 co-relation queries the response was YES. [2023-11-12 02:18:18,350 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24482 conditions, 12130 events. 7768/12130 cut-off events. For 1241/1241 co-relation queries the response was YES. Maximal size of possible extension queue 727. Compared 84675 event pairs, 3428 based on Foata normal form. 458/10761 useless extension candidates. Maximal degree in co-relation 18025. Up to 6383 conditions per place. [2023-11-12 02:18:18,496 INFO L140 encePairwiseOnDemand]: 188/204 looper letters, 51 selfloop transitions, 7 changer transitions 0/66 dead transitions. [2023-11-12 02:18:18,496 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 66 transitions, 284 flow [2023-11-12 02:18:18,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:18:18,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:18:18,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 359 transitions. [2023-11-12 02:18:18,519 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5866013071895425 [2023-11-12 02:18:18,520 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 359 transitions. [2023-11-12 02:18:18,520 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 359 transitions. [2023-11-12 02:18:18,524 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:18:18,527 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 359 transitions. [2023-11-12 02:18:18,534 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 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 02:18:18,541 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 204.0) internal successors, (816), 4 states have internal predecessors, (816), 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 02:18:18,542 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 204.0) internal successors, (816), 4 states have internal predecessors, (816), 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 02:18:18,544 INFO L175 Difference]: Start difference. First operand has 56 places, 44 transitions, 109 flow. Second operand 3 states and 359 transitions. [2023-11-12 02:18:18,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 66 transitions, 284 flow [2023-11-12 02:18:18,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 66 transitions, 262 flow, removed 0 selfloop flow, removed 7 redundant places. [2023-11-12 02:18:18,578 INFO L231 Difference]: Finished difference. Result has 53 places, 49 transitions, 162 flow [2023-11-12 02:18:18,580 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=204, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=162, PETRI_PLACES=53, PETRI_TRANSITIONS=49} [2023-11-12 02:18:18,587 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -3 predicate places. [2023-11-12 02:18:18,587 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 49 transitions, 162 flow [2023-11-12 02:18:18,587 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 02:18:18,587 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:18:18,588 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:18:18,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 02:18:18,588 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting readerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [readerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-12 02:18:18,590 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:18:18,590 INFO L85 PathProgramCache]: Analyzing trace with hash 1176968121, now seen corresponding path program 1 times [2023-11-12 02:18:18,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:18:18,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390710211] [2023-11-12 02:18:18,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:18:18,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:18:18,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:18:18,791 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 02:18:18,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:18:18,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390710211] [2023-11-12 02:18:18,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390710211] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:18:18,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:18:18,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:18:18,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439058139] [2023-11-12 02:18:18,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:18:18,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:18:18,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:18:18,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:18:18,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:18:18,803 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 204 [2023-11-12 02:18:18,804 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 49 transitions, 162 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 02:18:18,804 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:18:18,804 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 204 [2023-11-12 02:18:18,805 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:18:20,554 INFO L124 PetriNetUnfolderBase]: 7772/12617 cut-off events. [2023-11-12 02:18:20,555 INFO L125 PetriNetUnfolderBase]: For 4486/4486 co-relation queries the response was YES. [2023-11-12 02:18:20,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30988 conditions, 12617 events. 7772/12617 cut-off events. For 4486/4486 co-relation queries the response was YES. Maximal size of possible extension queue 700. Compared 93450 event pairs, 2322 based on Foata normal form. 0/11801 useless extension candidates. Maximal degree in co-relation 6690. Up to 4617 conditions per place. [2023-11-12 02:18:20,663 INFO L140 encePairwiseOnDemand]: 189/204 looper letters, 68 selfloop transitions, 17 changer transitions 0/93 dead transitions. [2023-11-12 02:18:20,664 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 93 transitions, 456 flow [2023-11-12 02:18:20,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:18:20,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-12 02:18:20,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 477 transitions. [2023-11-12 02:18:20,667 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5845588235294118 [2023-11-12 02:18:20,668 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 477 transitions. [2023-11-12 02:18:20,669 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 477 transitions. [2023-11-12 02:18:20,671 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:18:20,672 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 477 transitions. [2023-11-12 02:18:20,674 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 119.25) internal successors, (477), 4 states have internal predecessors, (477), 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 02:18:20,678 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 204.0) internal successors, (1020), 5 states have internal predecessors, (1020), 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 02:18:20,680 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 204.0) internal successors, (1020), 5 states have internal predecessors, (1020), 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 02:18:20,680 INFO L175 Difference]: Start difference. First operand has 53 places, 49 transitions, 162 flow. Second operand 4 states and 477 transitions. [2023-11-12 02:18:20,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 93 transitions, 456 flow [2023-11-12 02:18:20,702 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 93 transitions, 438 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:18:20,704 INFO L231 Difference]: Finished difference. Result has 56 places, 59 transitions, 271 flow [2023-11-12 02:18:20,710 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=204, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=271, PETRI_PLACES=56, PETRI_TRANSITIONS=59} [2023-11-12 02:18:20,711 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 0 predicate places. [2023-11-12 02:18:20,711 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 59 transitions, 271 flow [2023-11-12 02:18:20,712 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 02:18:20,712 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:18:20,712 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:18:20,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 02:18:20,713 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting readerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [readerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-12 02:18:20,715 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:18:20,715 INFO L85 PathProgramCache]: Analyzing trace with hash 1176968120, now seen corresponding path program 1 times [2023-11-12 02:18:20,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:18:20,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674583534] [2023-11-12 02:18:20,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:18:20,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:18:20,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:18:20,857 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 02:18:20,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:18:20,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674583534] [2023-11-12 02:18:20,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674583534] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:18:20,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:18:20,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:18:20,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454764028] [2023-11-12 02:18:20,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:18:20,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:18:20,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:18:20,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:18:20,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:18:20,869 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 204 [2023-11-12 02:18:20,870 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 59 transitions, 271 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 02:18:20,870 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:18:20,870 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 204 [2023-11-12 02:18:20,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:18:21,589 INFO L124 PetriNetUnfolderBase]: 2921/5188 cut-off events. [2023-11-12 02:18:21,589 INFO L125 PetriNetUnfolderBase]: For 5195/5195 co-relation queries the response was YES. [2023-11-12 02:18:21,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13661 conditions, 5188 events. 2921/5188 cut-off events. For 5195/5195 co-relation queries the response was YES. Maximal size of possible extension queue 326. Compared 36956 event pairs, 916 based on Foata normal form. 936/5952 useless extension candidates. Maximal degree in co-relation 2911. Up to 2290 conditions per place. [2023-11-12 02:18:21,619 INFO L140 encePairwiseOnDemand]: 189/204 looper letters, 60 selfloop transitions, 15 changer transitions 10/93 dead transitions. [2023-11-12 02:18:21,620 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 93 transitions, 521 flow [2023-11-12 02:18:21,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:18:21,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-12 02:18:21,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 475 transitions. [2023-11-12 02:18:21,623 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5821078431372549 [2023-11-12 02:18:21,623 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 475 transitions. [2023-11-12 02:18:21,624 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 475 transitions. [2023-11-12 02:18:21,624 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:18:21,624 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 475 transitions. [2023-11-12 02:18:21,626 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 118.75) internal successors, (475), 4 states have internal predecessors, (475), 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 02:18:21,628 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 204.0) internal successors, (1020), 5 states have internal predecessors, (1020), 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 02:18:21,629 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 204.0) internal successors, (1020), 5 states have internal predecessors, (1020), 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 02:18:21,630 INFO L175 Difference]: Start difference. First operand has 56 places, 59 transitions, 271 flow. Second operand 4 states and 475 transitions. [2023-11-12 02:18:21,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 93 transitions, 521 flow [2023-11-12 02:18:21,641 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 93 transitions, 491 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-11-12 02:18:21,644 INFO L231 Difference]: Finished difference. Result has 59 places, 55 transitions, 280 flow [2023-11-12 02:18:21,644 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=204, PETRI_DIFFERENCE_MINUEND_FLOW=217, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=280, PETRI_PLACES=59, PETRI_TRANSITIONS=55} [2023-11-12 02:18:21,646 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 3 predicate places. [2023-11-12 02:18:21,646 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 55 transitions, 280 flow [2023-11-12 02:18:21,646 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 02:18:21,647 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:18:21,647 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:18:21,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-12 02:18:21,652 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting readerErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [readerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-12 02:18:21,653 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:18:21,653 INFO L85 PathProgramCache]: Analyzing trace with hash 1263121690, now seen corresponding path program 1 times [2023-11-12 02:18:21,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:18:21,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673494043] [2023-11-12 02:18:21,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:18:21,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:18:21,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:18:21,759 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 02:18:21,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:18:21,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673494043] [2023-11-12 02:18:21,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673494043] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:18:21,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:18:21,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:18:21,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304232584] [2023-11-12 02:18:21,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:18:21,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:18:21,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:18:21,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:18:21,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:18:21,772 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 204 [2023-11-12 02:18:21,773 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 55 transitions, 280 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 02:18:21,773 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:18:21,774 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 204 [2023-11-12 02:18:21,774 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:18:22,399 INFO L124 PetriNetUnfolderBase]: 2643/4939 cut-off events. [2023-11-12 02:18:22,400 INFO L125 PetriNetUnfolderBase]: For 5502/5502 co-relation queries the response was YES. [2023-11-12 02:18:22,411 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13240 conditions, 4939 events. 2643/4939 cut-off events. For 5502/5502 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 36674 event pairs, 1661 based on Foata normal form. 200/5025 useless extension candidates. Maximal degree in co-relation 3443. Up to 3330 conditions per place. [2023-11-12 02:18:22,428 INFO L140 encePairwiseOnDemand]: 191/204 looper letters, 49 selfloop transitions, 11 changer transitions 6/74 dead transitions. [2023-11-12 02:18:22,429 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 74 transitions, 470 flow [2023-11-12 02:18:22,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:18:22,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:18:22,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 351 transitions. [2023-11-12 02:18:22,431 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5735294117647058 [2023-11-12 02:18:22,431 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 351 transitions. [2023-11-12 02:18:22,431 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 351 transitions. [2023-11-12 02:18:22,432 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:18:22,432 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 351 transitions. [2023-11-12 02:18:22,433 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 117.0) internal successors, (351), 3 states have internal predecessors, (351), 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 02:18:22,435 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 204.0) internal successors, (816), 4 states have internal predecessors, (816), 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 02:18:22,436 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 204.0) internal successors, (816), 4 states have internal predecessors, (816), 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 02:18:22,436 INFO L175 Difference]: Start difference. First operand has 59 places, 55 transitions, 280 flow. Second operand 3 states and 351 transitions. [2023-11-12 02:18:22,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 74 transitions, 470 flow [2023-11-12 02:18:22,445 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 74 transitions, 442 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-11-12 02:18:22,447 INFO L231 Difference]: Finished difference. Result has 61 places, 53 transitions, 298 flow [2023-11-12 02:18:22,447 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=204, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=298, PETRI_PLACES=61, PETRI_TRANSITIONS=53} [2023-11-12 02:18:22,448 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 5 predicate places. [2023-11-12 02:18:22,448 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 53 transitions, 298 flow [2023-11-12 02:18:22,449 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 02:18:22,449 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:18:22,449 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:18:22,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-12 02:18:22,450 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting readerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [readerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-12 02:18:22,450 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:18:22,450 INFO L85 PathProgramCache]: Analyzing trace with hash 1463042183, now seen corresponding path program 1 times [2023-11-12 02:18:22,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:18:22,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580866694] [2023-11-12 02:18:22,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:18:22,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:18:22,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:18:22,551 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 02:18:22,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:18:22,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580866694] [2023-11-12 02:18:22,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580866694] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:18:22,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:18:22,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:18:22,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276948484] [2023-11-12 02:18:22,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:18:22,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:18:22,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:18:22,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:18:22,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:18:22,578 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 204 [2023-11-12 02:18:22,579 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 53 transitions, 298 flow. Second operand has 6 states, 6 states have (on average 97.33333333333333) internal successors, (584), 6 states have internal predecessors, (584), 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 02:18:22,579 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:18:22,579 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 204 [2023-11-12 02:18:22,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:18:23,384 INFO L124 PetriNetUnfolderBase]: 2464/4735 cut-off events. [2023-11-12 02:18:23,385 INFO L125 PetriNetUnfolderBase]: For 4995/4995 co-relation queries the response was YES. [2023-11-12 02:18:23,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12912 conditions, 4735 events. 2464/4735 cut-off events. For 4995/4995 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 35380 event pairs, 272 based on Foata normal form. 64/4744 useless extension candidates. Maximal degree in co-relation 4723. Up to 1880 conditions per place. [2023-11-12 02:18:23,424 INFO L140 encePairwiseOnDemand]: 191/204 looper letters, 107 selfloop transitions, 20 changer transitions 4/138 dead transitions. [2023-11-12 02:18:23,425 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 138 transitions, 795 flow [2023-11-12 02:18:23,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-12 02:18:23,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-12 02:18:23,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 987 transitions. [2023-11-12 02:18:23,430 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5375816993464052 [2023-11-12 02:18:23,430 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 987 transitions. [2023-11-12 02:18:23,431 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 987 transitions. [2023-11-12 02:18:23,432 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:18:23,432 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 987 transitions. [2023-11-12 02:18:23,436 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 109.66666666666667) internal successors, (987), 9 states have internal predecessors, (987), 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 02:18:23,441 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 204.0) internal successors, (2040), 10 states have internal predecessors, (2040), 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 02:18:23,443 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 204.0) internal successors, (2040), 10 states have internal predecessors, (2040), 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 02:18:23,443 INFO L175 Difference]: Start difference. First operand has 61 places, 53 transitions, 298 flow. Second operand 9 states and 987 transitions. [2023-11-12 02:18:23,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 138 transitions, 795 flow [2023-11-12 02:18:23,476 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 138 transitions, 753 flow, removed 7 selfloop flow, removed 2 redundant places. [2023-11-12 02:18:23,478 INFO L231 Difference]: Finished difference. Result has 70 places, 58 transitions, 364 flow [2023-11-12 02:18:23,479 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=204, PETRI_DIFFERENCE_MINUEND_FLOW=255, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=364, PETRI_PLACES=70, PETRI_TRANSITIONS=58} [2023-11-12 02:18:23,480 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 14 predicate places. [2023-11-12 02:18:23,480 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 58 transitions, 364 flow [2023-11-12 02:18:23,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 97.33333333333333) internal successors, (584), 6 states have internal predecessors, (584), 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 02:18:23,481 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:18:23,481 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:18:23,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-12 02:18:23,481 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting readerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [readerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-12 02:18:23,482 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:18:23,482 INFO L85 PathProgramCache]: Analyzing trace with hash 501997744, now seen corresponding path program 1 times [2023-11-12 02:18:23,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:18:23,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42678128] [2023-11-12 02:18:23,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:18:23,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:18:23,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:18:23,597 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 02:18:23,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:18:23,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42678128] [2023-11-12 02:18:23,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42678128] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:18:23,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:18:23,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:18:23,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620080804] [2023-11-12 02:18:23,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:18:23,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:18:23,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:18:23,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:18:23,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:18:23,616 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 204 [2023-11-12 02:18:23,617 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 58 transitions, 364 flow. Second operand has 6 states, 6 states have (on average 97.33333333333333) internal successors, (584), 6 states have internal predecessors, (584), 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 02:18:23,617 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:18:23,617 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 204 [2023-11-12 02:18:23,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:18:24,304 INFO L124 PetriNetUnfolderBase]: 2212/4287 cut-off events. [2023-11-12 02:18:24,305 INFO L125 PetriNetUnfolderBase]: For 6044/6044 co-relation queries the response was YES. [2023-11-12 02:18:24,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11982 conditions, 4287 events. 2212/4287 cut-off events. For 6044/6044 co-relation queries the response was YES. Maximal size of possible extension queue 237. Compared 31882 event pairs, 252 based on Foata normal form. 128/4384 useless extension candidates. Maximal degree in co-relation 9521. Up to 1303 conditions per place. [2023-11-12 02:18:24,337 INFO L140 encePairwiseOnDemand]: 191/204 looper letters, 60 selfloop transitions, 12 changer transitions 22/101 dead transitions. [2023-11-12 02:18:24,337 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 101 transitions, 611 flow [2023-11-12 02:18:24,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 02:18:24,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-12 02:18:24,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 757 transitions. [2023-11-12 02:18:24,341 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5301120448179272 [2023-11-12 02:18:24,341 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 757 transitions. [2023-11-12 02:18:24,341 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 757 transitions. [2023-11-12 02:18:24,342 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:18:24,342 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 757 transitions. [2023-11-12 02:18:24,345 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 108.14285714285714) internal successors, (757), 7 states have internal predecessors, (757), 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 02:18:24,349 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 204.0) internal successors, (1632), 8 states have internal predecessors, (1632), 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 02:18:24,350 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 204.0) internal successors, (1632), 8 states have internal predecessors, (1632), 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 02:18:24,350 INFO L175 Difference]: Start difference. First operand has 70 places, 58 transitions, 364 flow. Second operand 7 states and 757 transitions. [2023-11-12 02:18:24,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 101 transitions, 611 flow [2023-11-12 02:18:24,395 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 101 transitions, 586 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-11-12 02:18:24,397 INFO L231 Difference]: Finished difference. Result has 70 places, 47 transitions, 255 flow [2023-11-12 02:18:24,397 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=204, PETRI_DIFFERENCE_MINUEND_FLOW=275, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=255, PETRI_PLACES=70, PETRI_TRANSITIONS=47} [2023-11-12 02:18:24,398 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 14 predicate places. [2023-11-12 02:18:24,398 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 47 transitions, 255 flow [2023-11-12 02:18:24,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 97.33333333333333) internal successors, (584), 6 states have internal predecessors, (584), 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 02:18:24,399 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:18:24,399 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:18:24,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-12 02:18:24,400 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting readerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [readerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-12 02:18:24,400 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:18:24,400 INFO L85 PathProgramCache]: Analyzing trace with hash -1230675170, now seen corresponding path program 1 times [2023-11-12 02:18:24,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:18:24,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102700259] [2023-11-12 02:18:24,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:18:24,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:18:24,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:18:24,495 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 02:18:24,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:18:24,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102700259] [2023-11-12 02:18:24,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102700259] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:18:24,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:18:24,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:18:24,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746587636] [2023-11-12 02:18:24,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:18:24,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:18:24,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:18:24,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:18:24,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:18:24,509 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 204 [2023-11-12 02:18:24,510 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 47 transitions, 255 flow. Second operand has 6 states, 6 states have (on average 97.33333333333333) internal successors, (584), 6 states have internal predecessors, (584), 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 02:18:24,510 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:18:24,510 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 204 [2023-11-12 02:18:24,510 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:18:25,012 INFO L124 PetriNetUnfolderBase]: 1748/3341 cut-off events. [2023-11-12 02:18:25,012 INFO L125 PetriNetUnfolderBase]: For 4581/4581 co-relation queries the response was YES. [2023-11-12 02:18:25,021 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9598 conditions, 3341 events. 1748/3341 cut-off events. For 4581/4581 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 23630 event pairs, 248 based on Foata normal form. 48/3337 useless extension candidates. Maximal degree in co-relation 9284. Up to 1479 conditions per place. [2023-11-12 02:18:25,033 INFO L140 encePairwiseOnDemand]: 194/204 looper letters, 76 selfloop transitions, 16 changer transitions 6/105 dead transitions. [2023-11-12 02:18:25,033 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 105 transitions, 627 flow [2023-11-12 02:18:25,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-12 02:18:25,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-12 02:18:25,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 955 transitions. [2023-11-12 02:18:25,037 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5201525054466231 [2023-11-12 02:18:25,038 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 955 transitions. [2023-11-12 02:18:25,038 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 955 transitions. [2023-11-12 02:18:25,038 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:18:25,039 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 955 transitions. [2023-11-12 02:18:25,041 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 106.11111111111111) internal successors, (955), 9 states have internal predecessors, (955), 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 02:18:25,045 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 204.0) internal successors, (2040), 10 states have internal predecessors, (2040), 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 02:18:25,046 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 204.0) internal successors, (2040), 10 states have internal predecessors, (2040), 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 02:18:25,046 INFO L175 Difference]: Start difference. First operand has 70 places, 47 transitions, 255 flow. Second operand 9 states and 955 transitions. [2023-11-12 02:18:25,046 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 105 transitions, 627 flow [2023-11-12 02:18:25,082 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 105 transitions, 551 flow, removed 11 selfloop flow, removed 8 redundant places. [2023-11-12 02:18:25,084 INFO L231 Difference]: Finished difference. Result has 69 places, 52 transitions, 283 flow [2023-11-12 02:18:25,084 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=204, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=283, PETRI_PLACES=69, PETRI_TRANSITIONS=52} [2023-11-12 02:18:25,085 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 13 predicate places. [2023-11-12 02:18:25,085 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 52 transitions, 283 flow [2023-11-12 02:18:25,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 97.33333333333333) internal successors, (584), 6 states have internal predecessors, (584), 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 02:18:25,086 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:18:25,086 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:18:25,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-12 02:18:25,087 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting readerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [readerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-12 02:18:25,087 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:18:25,087 INFO L85 PathProgramCache]: Analyzing trace with hash -1230675171, now seen corresponding path program 1 times [2023-11-12 02:18:25,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:18:25,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002958511] [2023-11-12 02:18:25,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:18:25,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:18:25,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:18:25,169 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 02:18:25,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:18:25,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002958511] [2023-11-12 02:18:25,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002958511] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:18:25,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:18:25,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:18:25,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761810939] [2023-11-12 02:18:25,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:18:25,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:18:25,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:18:25,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:18:25,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:18:25,185 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 204 [2023-11-12 02:18:25,186 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 52 transitions, 283 flow. Second operand has 6 states, 6 states have (on average 97.33333333333333) internal successors, (584), 6 states have internal predecessors, (584), 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 02:18:25,186 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:18:25,187 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 204 [2023-11-12 02:18:25,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:18:25,648 INFO L124 PetriNetUnfolderBase]: 1554/3017 cut-off events. [2023-11-12 02:18:25,648 INFO L125 PetriNetUnfolderBase]: For 3927/3927 co-relation queries the response was YES. [2023-11-12 02:18:25,656 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8091 conditions, 3017 events. 1554/3017 cut-off events. For 3927/3927 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 21332 event pairs, 180 based on Foata normal form. 96/3037 useless extension candidates. Maximal degree in co-relation 6723. Up to 1129 conditions per place. [2023-11-12 02:18:25,667 INFO L140 encePairwiseOnDemand]: 194/204 looper letters, 56 selfloop transitions, 8 changer transitions 17/88 dead transitions. [2023-11-12 02:18:25,667 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 88 transitions, 478 flow [2023-11-12 02:18:25,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 02:18:25,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-12 02:18:25,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 746 transitions. [2023-11-12 02:18:25,671 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5224089635854342 [2023-11-12 02:18:25,671 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 746 transitions. [2023-11-12 02:18:25,672 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 746 transitions. [2023-11-12 02:18:25,672 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:18:25,673 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 746 transitions. [2023-11-12 02:18:25,675 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 106.57142857142857) internal successors, (746), 7 states have internal predecessors, (746), 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 02:18:25,678 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 204.0) internal successors, (1632), 8 states have internal predecessors, (1632), 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 02:18:25,680 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 204.0) internal successors, (1632), 8 states have internal predecessors, (1632), 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 02:18:25,680 INFO L175 Difference]: Start difference. First operand has 69 places, 52 transitions, 283 flow. Second operand 7 states and 746 transitions. [2023-11-12 02:18:25,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 88 transitions, 478 flow [2023-11-12 02:18:25,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 88 transitions, 453 flow, removed 1 selfloop flow, removed 5 redundant places. [2023-11-12 02:18:25,706 INFO L231 Difference]: Finished difference. Result has 65 places, 39 transitions, 157 flow [2023-11-12 02:18:25,706 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=204, PETRI_DIFFERENCE_MINUEND_FLOW=183, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=157, PETRI_PLACES=65, PETRI_TRANSITIONS=39} [2023-11-12 02:18:25,709 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 9 predicate places. [2023-11-12 02:18:25,709 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 39 transitions, 157 flow [2023-11-12 02:18:25,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 97.33333333333333) internal successors, (584), 6 states have internal predecessors, (584), 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 02:18:25,710 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:18:25,710 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:18:25,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-12 02:18:25,710 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting readerErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [readerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-12 02:18:25,711 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:18:25,711 INFO L85 PathProgramCache]: Analyzing trace with hash 2087988965, now seen corresponding path program 1 times [2023-11-12 02:18:25,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:18:25,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114369715] [2023-11-12 02:18:25,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:18:25,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:18:25,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:18:25,837 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 02:18:25,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:18:25,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114369715] [2023-11-12 02:18:25,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114369715] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:18:25,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:18:25,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:18:25,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929767987] [2023-11-12 02:18:25,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:18:25,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:18:25,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:18:25,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:18:25,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:18:25,854 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 204 [2023-11-12 02:18:25,856 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 39 transitions, 157 flow. Second operand has 6 states, 6 states have (on average 97.66666666666667) internal successors, (586), 6 states have internal predecessors, (586), 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 02:18:25,856 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:18:25,856 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 204 [2023-11-12 02:18:25,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:18:26,171 INFO L124 PetriNetUnfolderBase]: 1157/2244 cut-off events. [2023-11-12 02:18:26,172 INFO L125 PetriNetUnfolderBase]: For 2139/2139 co-relation queries the response was YES. [2023-11-12 02:18:26,177 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5739 conditions, 2244 events. 1157/2244 cut-off events. For 2139/2139 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 15206 event pairs, 52 based on Foata normal form. 32/2272 useless extension candidates. Maximal degree in co-relation 5527. Up to 669 conditions per place. [2023-11-12 02:18:26,186 INFO L140 encePairwiseOnDemand]: 197/204 looper letters, 43 selfloop transitions, 6 changer transitions 19/75 dead transitions. [2023-11-12 02:18:26,186 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 75 transitions, 374 flow [2023-11-12 02:18:26,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 02:18:26,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-12 02:18:26,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 734 transitions. [2023-11-12 02:18:26,190 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5140056022408963 [2023-11-12 02:18:26,191 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 734 transitions. [2023-11-12 02:18:26,191 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 734 transitions. [2023-11-12 02:18:26,192 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:18:26,192 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 734 transitions. [2023-11-12 02:18:26,194 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 104.85714285714286) internal successors, (734), 7 states have internal predecessors, (734), 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 02:18:26,198 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 204.0) internal successors, (1632), 8 states have internal predecessors, (1632), 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 02:18:26,199 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 204.0) internal successors, (1632), 8 states have internal predecessors, (1632), 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 02:18:26,199 INFO L175 Difference]: Start difference. First operand has 65 places, 39 transitions, 157 flow. Second operand 7 states and 734 transitions. [2023-11-12 02:18:26,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 75 transitions, 374 flow [2023-11-12 02:18:26,211 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 75 transitions, 340 flow, removed 4 selfloop flow, removed 10 redundant places. [2023-11-12 02:18:26,213 INFO L231 Difference]: Finished difference. Result has 56 places, 32 transitions, 112 flow [2023-11-12 02:18:26,213 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=204, PETRI_DIFFERENCE_MINUEND_FLOW=119, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=112, PETRI_PLACES=56, PETRI_TRANSITIONS=32} [2023-11-12 02:18:26,214 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 0 predicate places. [2023-11-12 02:18:26,214 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 32 transitions, 112 flow [2023-11-12 02:18:26,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 97.66666666666667) internal successors, (586), 6 states have internal predecessors, (586), 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 02:18:26,215 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:18:26,215 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:18:26,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-12 02:18:26,215 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting readerErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [readerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-12 02:18:26,216 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:18:26,216 INFO L85 PathProgramCache]: Analyzing trace with hash 2087967071, now seen corresponding path program 1 times [2023-11-12 02:18:26,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:18:26,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547974878] [2023-11-12 02:18:26,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:18:26,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:18:26,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:18:26,307 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 02:18:26,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:18:26,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547974878] [2023-11-12 02:18:26,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547974878] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:18:26,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:18:26,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:18:26,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768648120] [2023-11-12 02:18:26,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:18:26,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:18:26,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:18:26,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:18:26,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:18:26,323 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 204 [2023-11-12 02:18:26,324 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 32 transitions, 112 flow. Second operand has 6 states, 6 states have (on average 97.66666666666667) internal successors, (586), 6 states have internal predecessors, (586), 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 02:18:26,324 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:18:26,324 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 204 [2023-11-12 02:18:26,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:18:26,542 INFO L124 PetriNetUnfolderBase]: 755/1514 cut-off events. [2023-11-12 02:18:26,543 INFO L125 PetriNetUnfolderBase]: For 1029/1029 co-relation queries the response was YES. [2023-11-12 02:18:26,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3628 conditions, 1514 events. 755/1514 cut-off events. For 1029/1029 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 10192 event pairs, 52 based on Foata normal form. 24/1510 useless extension candidates. Maximal degree in co-relation 852. Up to 462 conditions per place. [2023-11-12 02:18:26,547 INFO L140 encePairwiseOnDemand]: 198/204 looper letters, 0 selfloop transitions, 0 changer transitions 60/60 dead transitions. [2023-11-12 02:18:26,548 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 60 transitions, 279 flow [2023-11-12 02:18:26,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 02:18:26,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-12 02:18:26,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 719 transitions. [2023-11-12 02:18:26,551 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5035014005602241 [2023-11-12 02:18:26,551 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 719 transitions. [2023-11-12 02:18:26,552 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 719 transitions. [2023-11-12 02:18:26,552 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:18:26,552 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 719 transitions. [2023-11-12 02:18:26,555 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 102.71428571428571) internal successors, (719), 7 states have internal predecessors, (719), 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 02:18:26,558 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 204.0) internal successors, (1632), 8 states have internal predecessors, (1632), 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 02:18:26,559 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 204.0) internal successors, (1632), 8 states have internal predecessors, (1632), 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 02:18:26,559 INFO L175 Difference]: Start difference. First operand has 56 places, 32 transitions, 112 flow. Second operand 7 states and 719 transitions. [2023-11-12 02:18:26,559 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 60 transitions, 279 flow [2023-11-12 02:18:26,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 60 transitions, 257 flow, removed 0 selfloop flow, removed 7 redundant places. [2023-11-12 02:18:26,562 INFO L231 Difference]: Finished difference. Result has 45 places, 0 transitions, 0 flow [2023-11-12 02:18:26,562 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=204, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=45, PETRI_TRANSITIONS=0} [2023-11-12 02:18:26,563 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -11 predicate places. [2023-11-12 02:18:26,563 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 0 transitions, 0 flow [2023-11-12 02:18:26,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 97.66666666666667) internal successors, (586), 6 states have internal predecessors, (586), 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 02:18:26,566 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 16 remaining) [2023-11-12 02:18:26,567 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 16 remaining) [2023-11-12 02:18:26,567 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 16 remaining) [2023-11-12 02:18:26,567 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 16 remaining) [2023-11-12 02:18:26,567 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (11 of 16 remaining) [2023-11-12 02:18:26,567 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 16 remaining) [2023-11-12 02:18:26,568 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 16 remaining) [2023-11-12 02:18:26,568 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 16 remaining) [2023-11-12 02:18:26,568 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 16 remaining) [2023-11-12 02:18:26,568 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 16 remaining) [2023-11-12 02:18:26,568 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 16 remaining) [2023-11-12 02:18:26,569 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 16 remaining) [2023-11-12 02:18:26,569 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 16 remaining) [2023-11-12 02:18:26,569 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 16 remaining) [2023-11-12 02:18:26,569 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 16 remaining) [2023-11-12 02:18:26,569 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 16 remaining) [2023-11-12 02:18:26,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-12 02:18:26,570 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:18:26,575 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-12 02:18:26,575 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-11-12 02:18:26,587 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 02:18:26 BasicIcfg [2023-11-12 02:18:26,587 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-12 02:18:26,588 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-12 02:18:26,588 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-12 02:18:26,588 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-12 02:18:26,588 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:18:12" (3/4) ... [2023-11-12 02:18:26,590 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-12 02:18:26,593 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure reader [2023-11-12 02:18:26,594 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure writer [2023-11-12 02:18:26,600 INFO L944 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2023-11-12 02:18:26,600 INFO L944 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-12 02:18:26,600 INFO L944 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-12 02:18:26,600 INFO L944 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-12 02:18:26,694 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_681aa0d4-d543-4328-8570-1d59d76865c6/bin/uautomizer-verify-uTZkv6EMXl/witness.graphml [2023-11-12 02:18:26,694 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_681aa0d4-d543-4328-8570-1d59d76865c6/bin/uautomizer-verify-uTZkv6EMXl/witness.yml [2023-11-12 02:18:26,695 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-12 02:18:26,695 INFO L158 Benchmark]: Toolchain (without parser) took 16297.49ms. Allocated memory was 174.1MB in the beginning and 889.2MB in the end (delta: 715.1MB). Free memory was 142.7MB in the beginning and 277.6MB in the end (delta: -134.8MB). Peak memory consumption was 579.0MB. Max. memory is 16.1GB. [2023-11-12 02:18:26,696 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 125.8MB. Free memory was 96.5MB in the beginning and 96.4MB in the end (delta: 71.2kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-12 02:18:26,696 INFO L158 Benchmark]: CACSL2BoogieTranslator took 783.20ms. Allocated memory is still 174.1MB. Free memory was 142.7MB in the beginning and 133.9MB in the end (delta: 8.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-12 02:18:26,696 INFO L158 Benchmark]: Boogie Procedure Inliner took 85.49ms. Allocated memory is still 174.1MB. Free memory was 133.9MB in the beginning and 131.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-12 02:18:26,697 INFO L158 Benchmark]: Boogie Preprocessor took 41.62ms. Allocated memory is still 174.1MB. Free memory was 131.8MB in the beginning and 129.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-12 02:18:26,698 INFO L158 Benchmark]: RCFGBuilder took 804.93ms. Allocated memory is still 174.1MB. Free memory was 129.7MB in the beginning and 111.6MB in the end (delta: 18.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-12 02:18:26,698 INFO L158 Benchmark]: TraceAbstraction took 14463.83ms. Allocated memory was 174.1MB in the beginning and 889.2MB in the end (delta: 715.1MB). Free memory was 110.8MB in the beginning and 281.8MB in the end (delta: -170.9MB). Peak memory consumption was 544.9MB. Max. memory is 16.1GB. [2023-11-12 02:18:26,699 INFO L158 Benchmark]: Witness Printer took 107.25ms. Allocated memory is still 889.2MB. Free memory was 281.8MB in the beginning and 277.6MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-12 02:18:26,702 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 125.8MB. Free memory was 96.5MB in the beginning and 96.4MB in the end (delta: 71.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 783.20ms. Allocated memory is still 174.1MB. Free memory was 142.7MB in the beginning and 133.9MB in the end (delta: 8.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 85.49ms. Allocated memory is still 174.1MB. Free memory was 133.9MB in the beginning and 131.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 41.62ms. Allocated memory is still 174.1MB. Free memory was 131.8MB in the beginning and 129.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 804.93ms. Allocated memory is still 174.1MB. Free memory was 129.7MB in the beginning and 111.6MB in the end (delta: 18.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 14463.83ms. Allocated memory was 174.1MB in the beginning and 889.2MB in the end (delta: 715.1MB). Free memory was 110.8MB in the beginning and 281.8MB in the end (delta: -170.9MB). Peak memory consumption was 544.9MB. Max. memory is 16.1GB. * Witness Printer took 107.25ms. Allocated memory is still 889.2MB. Free memory was 281.8MB in the beginning and 277.6MB 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: 3.7s, 117 PlacesBefore, 56 PlacesAfterwards, 108 TransitionsBefore, 44 TransitionsAfterwards, 4046 CoEnabledTransitionPairs, 5 FixpointIterations, 18 TrivialSequentialCompositions, 53 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 3 ChoiceCompositions, 78 TotalNumberOfCompositions, 10385 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 5339, independent: 5126, independent conditional: 0, independent unconditional: 5126, dependent: 213, dependent conditional: 0, dependent unconditional: 213, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 2110, independent: 2066, independent conditional: 0, independent unconditional: 2066, dependent: 44, dependent conditional: 0, dependent unconditional: 44, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 5339, independent: 3060, independent conditional: 0, independent unconditional: 3060, dependent: 169, dependent conditional: 0, dependent unconditional: 169, unknown: 2110, unknown conditional: 0, unknown unconditional: 2110] , Statistics on independence cache: Total cache size (in pairs): 336, Positive cache size: 315, Positive conditional cache size: 0, Positive unconditional cache size: 315, Negative cache size: 21, Negative conditional cache size: 0, Negative unconditional cache size: 21, 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: 740]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 740]: 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, 156 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: 14.3s, OverallIterations: 10, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 8.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 638 SdHoareTripleChecker+Valid, 1.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 593 mSDsluCounter, 99 SdHoareTripleChecker+Invalid, 1.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 64 mSDsCounter, 130 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1448 IncrementalHoareTripleChecker+Invalid, 1578 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 130 mSolverCounterUnsat, 35 mSDtfsCounter, 1448 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 47 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=364occurred in iteration=5, InterpolantAutomatonStates: 60, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 146 NumberOfCodeBlocks, 146 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 136 ConstructedInterpolants, 0 QuantifiedInterpolants, 382 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 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 02:18:26,732 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_681aa0d4-d543-4328-8570-1d59d76865c6/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE