./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/04-mutex_46-escape_nr.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc 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_8b04dd9b-e46b-4222-9929-2f4a82eff5ef/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b04dd9b-e46b-4222-9929-2f4a82eff5ef/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b04dd9b-e46b-4222-9929-2f4a82eff5ef/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b04dd9b-e46b-4222-9929-2f4a82eff5ef/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/04-mutex_46-escape_nr.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b04dd9b-e46b-4222-9929-2f4a82eff5ef/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b04dd9b-e46b-4222-9929-2f4a82eff5ef/bin/uautomizer-verify-BQ2R08f2Ya --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 b71c523f20411078d17c9943b891d34ddfc00131917c4009fb579cdffacef23c --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 00:36:41,545 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 00:36:41,611 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b04dd9b-e46b-4222-9929-2f4a82eff5ef/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-29 00:36:41,615 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 00:36:41,616 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 00:36:41,640 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 00:36:41,641 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 00:36:41,641 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 00:36:41,642 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 00:36:41,643 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 00:36:41,643 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 00:36:41,644 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 00:36:41,645 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 00:36:41,645 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 00:36:41,646 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 00:36:41,646 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 00:36:41,647 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 00:36:41,647 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 00:36:41,648 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 00:36:41,648 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 00:36:41,649 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 00:36:41,652 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 00:36:41,652 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 00:36:41,652 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 00:36:41,653 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-29 00:36:41,653 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 00:36:41,654 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 00:36:41,654 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 00:36:41,654 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 00:36:41,655 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 00:36:41,655 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 00:36:41,655 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 00:36:41,656 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 00:36:41,656 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 00:36:41,656 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 00:36:41,656 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 00:36:41,657 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 00:36:41,657 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 00:36:41,657 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 00:36:41,657 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 00:36:41,657 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 00:36:41,658 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 00:36:41,658 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 00:36:41,658 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 00:36:41,658 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_8b04dd9b-e46b-4222-9929-2f4a82eff5ef/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b04dd9b-e46b-4222-9929-2f4a82eff5ef/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b71c523f20411078d17c9943b891d34ddfc00131917c4009fb579cdffacef23c [2023-11-29 00:36:41,877 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 00:36:41,899 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 00:36:41,902 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 00:36:41,903 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 00:36:41,903 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 00:36:41,904 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b04dd9b-e46b-4222-9929-2f4a82eff5ef/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/goblint-regression/04-mutex_46-escape_nr.i [2023-11-29 00:36:44,611 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 00:36:44,907 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 00:36:44,908 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b04dd9b-e46b-4222-9929-2f4a82eff5ef/sv-benchmarks/c/goblint-regression/04-mutex_46-escape_nr.i [2023-11-29 00:36:44,925 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b04dd9b-e46b-4222-9929-2f4a82eff5ef/bin/uautomizer-verify-BQ2R08f2Ya/data/5596a1e75/d80df76c7f784fc2b12521a108b90202/FLAG9624e6ce2 [2023-11-29 00:36:44,939 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b04dd9b-e46b-4222-9929-2f4a82eff5ef/bin/uautomizer-verify-BQ2R08f2Ya/data/5596a1e75/d80df76c7f784fc2b12521a108b90202 [2023-11-29 00:36:44,942 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 00:36:44,943 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 00:36:44,944 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 00:36:44,945 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 00:36:44,950 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 00:36:44,950 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 12:36:44" (1/1) ... [2023-11-29 00:36:44,951 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f05a8ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:36:44, skipping insertion in model container [2023-11-29 00:36:44,952 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 12:36:44" (1/1) ... [2023-11-29 00:36:45,004 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 00:36:45,445 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 00:36:45,461 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 00:36:45,504 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 00:36:45,563 INFO L206 MainTranslator]: Completed translation [2023-11-29 00:36:45,564 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:36:45 WrapperNode [2023-11-29 00:36:45,564 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 00:36:45,565 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 00:36:45,565 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 00:36:45,565 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 00:36:45,573 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:36:45" (1/1) ... [2023-11-29 00:36:45,590 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:36:45" (1/1) ... [2023-11-29 00:36:45,611 INFO L138 Inliner]: procedures = 264, calls = 29, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 67 [2023-11-29 00:36:45,612 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 00:36:45,612 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 00:36:45,612 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 00:36:45,613 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 00:36:45,624 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:36:45" (1/1) ... [2023-11-29 00:36:45,624 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:36:45" (1/1) ... [2023-11-29 00:36:45,628 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:36:45" (1/1) ... [2023-11-29 00:36:45,642 INFO L175 MemorySlicer]: Split 13 memory accesses to 3 slices as follows [5, 2, 6]. 46 percent of accesses are in the largest equivalence class. The 6 initializations are split as follows [5, 0, 1]. The 3 writes are split as follows [0, 1, 2]. [2023-11-29 00:36:45,642 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:36:45" (1/1) ... [2023-11-29 00:36:45,643 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:36:45" (1/1) ... [2023-11-29 00:36:45,649 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:36:45" (1/1) ... [2023-11-29 00:36:45,651 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:36:45" (1/1) ... [2023-11-29 00:36:45,653 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:36:45" (1/1) ... [2023-11-29 00:36:45,654 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:36:45" (1/1) ... [2023-11-29 00:36:45,657 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 00:36:45,658 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 00:36:45,658 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 00:36:45,658 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 00:36:45,659 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:36:45" (1/1) ... [2023-11-29 00:36:45,665 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 00:36:45,676 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b04dd9b-e46b-4222-9929-2f4a82eff5ef/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:36:45,688 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b04dd9b-e46b-4222-9929-2f4a82eff5ef/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 00:36:45,692 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b04dd9b-e46b-4222-9929-2f4a82eff5ef/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 00:36:45,724 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 00:36:45,724 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 00:36:45,725 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-29 00:36:45,725 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-29 00:36:45,725 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-29 00:36:45,725 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-29 00:36:45,725 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-29 00:36:45,726 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-29 00:36:45,726 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-29 00:36:45,726 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-29 00:36:45,726 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 00:36:45,726 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-29 00:36:45,727 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-29 00:36:45,727 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 00:36:45,727 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-29 00:36:45,727 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-29 00:36:45,727 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 00:36:45,728 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 00:36:45,729 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-29 00:36:45,872 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 00:36:45,874 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 00:36:46,032 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 00:36:46,158 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 00:36:46,158 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-29 00:36:46,159 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:36:46 BoogieIcfgContainer [2023-11-29 00:36:46,159 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 00:36:46,162 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 00:36:46,162 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 00:36:46,165 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 00:36:46,166 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 12:36:44" (1/3) ... [2023-11-29 00:36:46,186 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54ef78d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 12:36:46, skipping insertion in model container [2023-11-29 00:36:46,186 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:36:45" (2/3) ... [2023-11-29 00:36:46,187 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54ef78d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 12:36:46, skipping insertion in model container [2023-11-29 00:36:46,187 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:36:46" (3/3) ... [2023-11-29 00:36:46,188 INFO L112 eAbstractionObserver]: Analyzing ICFG 04-mutex_46-escape_nr.i [2023-11-29 00:36:46,195 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-29 00:36:46,203 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 00:36:46,203 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-11-29 00:36:46,203 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-29 00:36:46,255 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-11-29 00:36:46,291 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 29 places, 26 transitions, 59 flow [2023-11-29 00:36:46,317 INFO L124 PetriNetUnfolderBase]: 1/25 cut-off events. [2023-11-29 00:36:46,318 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-29 00:36:46,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30 conditions, 25 events. 1/25 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 34 event pairs, 0 based on Foata normal form. 0/20 useless extension candidates. Maximal degree in co-relation 1. Up to 2 conditions per place. [2023-11-29 00:36:46,321 INFO L82 GeneralOperation]: Start removeDead. Operand has 29 places, 26 transitions, 59 flow [2023-11-29 00:36:46,324 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 25 places, 21 transitions, 45 flow [2023-11-29 00:36:46,334 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 00:36:46,341 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;@73ee3102, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 00:36:46,341 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-11-29 00:36:46,348 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 00:36:46,348 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2023-11-29 00:36:46,348 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 00:36:46,348 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:36:46,349 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:36:46,350 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-29 00:36:46,355 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:36:46,355 INFO L85 PathProgramCache]: Analyzing trace with hash 333402417, now seen corresponding path program 1 times [2023-11-29 00:36:46,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:36:46,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738232679] [2023-11-29 00:36:46,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:36:46,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:36:46,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:36:46,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:36:46,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:36:46,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738232679] [2023-11-29 00:36:46,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738232679] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:36:46,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:36:46,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:36:46,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627079826] [2023-11-29 00:36:46,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:36:46,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 00:36:46,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:36:46,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 00:36:46,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 00:36:46,801 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 26 [2023-11-29 00:36:46,804 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 21 transitions, 45 flow. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 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) [2023-11-29 00:36:46,804 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:36:46,804 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 26 [2023-11-29 00:36:46,805 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:36:46,966 INFO L124 PetriNetUnfolderBase]: 52/144 cut-off events. [2023-11-29 00:36:46,966 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 00:36:46,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 274 conditions, 144 events. 52/144 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 525 event pairs, 19 based on Foata normal form. 7/137 useless extension candidates. Maximal degree in co-relation 263. Up to 55 conditions per place. [2023-11-29 00:36:46,970 INFO L140 encePairwiseOnDemand]: 19/26 looper letters, 21 selfloop transitions, 7 changer transitions 6/38 dead transitions. [2023-11-29 00:36:46,970 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 38 transitions, 147 flow [2023-11-29 00:36:46,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 00:36:46,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 00:36:46,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 66 transitions. [2023-11-29 00:36:46,984 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4230769230769231 [2023-11-29 00:36:46,985 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 66 transitions. [2023-11-29 00:36:46,985 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 66 transitions. [2023-11-29 00:36:46,986 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:36:46,989 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 66 transitions. [2023-11-29 00:36:46,992 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 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) [2023-11-29 00:36:46,995 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 26.0) internal successors, (182), 7 states have internal predecessors, (182), 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) [2023-11-29 00:36:46,996 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 26.0) internal successors, (182), 7 states have internal predecessors, (182), 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) [2023-11-29 00:36:46,998 INFO L175 Difference]: Start difference. First operand has 25 places, 21 transitions, 45 flow. Second operand 6 states and 66 transitions. [2023-11-29 00:36:46,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 38 transitions, 147 flow [2023-11-29 00:36:47,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 38 transitions, 146 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 00:36:47,004 INFO L231 Difference]: Finished difference. Result has 33 places, 24 transitions, 84 flow [2023-11-29 00:36:47,006 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=84, PETRI_PLACES=33, PETRI_TRANSITIONS=24} [2023-11-29 00:36:47,009 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 8 predicate places. [2023-11-29 00:36:47,010 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 24 transitions, 84 flow [2023-11-29 00:36:47,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 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) [2023-11-29 00:36:47,010 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:36:47,010 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:36:47,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 00:36:47,011 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-29 00:36:47,011 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:36:47,012 INFO L85 PathProgramCache]: Analyzing trace with hash 334021071, now seen corresponding path program 1 times [2023-11-29 00:36:47,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:36:47,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786487909] [2023-11-29 00:36:47,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:36:47,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:36:47,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:36:47,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:36:47,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:36:47,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786487909] [2023-11-29 00:36:47,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786487909] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:36:47,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:36:47,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 00:36:47,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645157967] [2023-11-29 00:36:47,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:36:47,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 00:36:47,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:36:47,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 00:36:47,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-29 00:36:47,227 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 26 [2023-11-29 00:36:47,228 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 24 transitions, 84 flow. Second operand has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 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) [2023-11-29 00:36:47,228 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:36:47,228 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 26 [2023-11-29 00:36:47,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:36:47,469 INFO L124 PetriNetUnfolderBase]: 48/142 cut-off events. [2023-11-29 00:36:47,469 INFO L125 PetriNetUnfolderBase]: For 64/64 co-relation queries the response was YES. [2023-11-29 00:36:47,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 333 conditions, 142 events. 48/142 cut-off events. For 64/64 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 546 event pairs, 12 based on Foata normal form. 7/149 useless extension candidates. Maximal degree in co-relation 316. Up to 41 conditions per place. [2023-11-29 00:36:47,474 INFO L140 encePairwiseOnDemand]: 17/26 looper letters, 23 selfloop transitions, 11 changer transitions 8/47 dead transitions. [2023-11-29 00:36:47,475 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 47 transitions, 238 flow [2023-11-29 00:36:47,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 00:36:47,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-29 00:36:47,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 87 transitions. [2023-11-29 00:36:47,481 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3717948717948718 [2023-11-29 00:36:47,482 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 87 transitions. [2023-11-29 00:36:47,483 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 87 transitions. [2023-11-29 00:36:47,483 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:36:47,484 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 87 transitions. [2023-11-29 00:36:47,487 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 states have internal predecessors, (87), 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) [2023-11-29 00:36:47,489 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 26.0) internal successors, (260), 10 states have internal predecessors, (260), 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) [2023-11-29 00:36:47,490 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 26.0) internal successors, (260), 10 states have internal predecessors, (260), 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) [2023-11-29 00:36:47,490 INFO L175 Difference]: Start difference. First operand has 33 places, 24 transitions, 84 flow. Second operand 9 states and 87 transitions. [2023-11-29 00:36:47,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 47 transitions, 238 flow [2023-11-29 00:36:47,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 47 transitions, 236 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 00:36:47,494 INFO L231 Difference]: Finished difference. Result has 45 places, 29 transitions, 150 flow [2023-11-29 00:36:47,494 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=150, PETRI_PLACES=45, PETRI_TRANSITIONS=29} [2023-11-29 00:36:47,495 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 20 predicate places. [2023-11-29 00:36:47,495 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 29 transitions, 150 flow [2023-11-29 00:36:47,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 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) [2023-11-29 00:36:47,496 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:36:47,496 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:36:47,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 00:36:47,497 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-29 00:36:47,497 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:36:47,497 INFO L85 PathProgramCache]: Analyzing trace with hash 1745540538, now seen corresponding path program 1 times [2023-11-29 00:36:47,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:36:47,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585608042] [2023-11-29 00:36:47,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:36:47,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:36:47,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:36:47,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:36:47,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:36:47,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585608042] [2023-11-29 00:36:47,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585608042] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:36:47,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:36:47,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:36:47,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631378539] [2023-11-29 00:36:47,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:36:47,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 00:36:47,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:36:47,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 00:36:47,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 00:36:47,583 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 26 [2023-11-29 00:36:47,583 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 29 transitions, 150 flow. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 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) [2023-11-29 00:36:47,583 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:36:47,583 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 26 [2023-11-29 00:36:47,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:36:47,689 INFO L124 PetriNetUnfolderBase]: 29/105 cut-off events. [2023-11-29 00:36:47,689 INFO L125 PetriNetUnfolderBase]: For 146/148 co-relation queries the response was YES. [2023-11-29 00:36:47,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 299 conditions, 105 events. 29/105 cut-off events. For 146/148 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 372 event pairs, 12 based on Foata normal form. 9/114 useless extension candidates. Maximal degree in co-relation 274. Up to 49 conditions per place. [2023-11-29 00:36:47,691 INFO L140 encePairwiseOnDemand]: 19/26 looper letters, 22 selfloop transitions, 8 changer transitions 1/36 dead transitions. [2023-11-29 00:36:47,691 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 36 transitions, 232 flow [2023-11-29 00:36:47,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 00:36:47,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 00:36:47,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 61 transitions. [2023-11-29 00:36:47,693 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.391025641025641 [2023-11-29 00:36:47,693 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 61 transitions. [2023-11-29 00:36:47,693 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 61 transitions. [2023-11-29 00:36:47,693 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:36:47,694 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 61 transitions. [2023-11-29 00:36:47,694 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 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) [2023-11-29 00:36:47,695 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 26.0) internal successors, (182), 7 states have internal predecessors, (182), 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) [2023-11-29 00:36:47,695 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 26.0) internal successors, (182), 7 states have internal predecessors, (182), 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) [2023-11-29 00:36:47,696 INFO L175 Difference]: Start difference. First operand has 45 places, 29 transitions, 150 flow. Second operand 6 states and 61 transitions. [2023-11-29 00:36:47,696 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 36 transitions, 232 flow [2023-11-29 00:36:47,699 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 36 transitions, 225 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-29 00:36:47,700 INFO L231 Difference]: Finished difference. Result has 46 places, 27 transitions, 145 flow [2023-11-29 00:36:47,701 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=139, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=145, PETRI_PLACES=46, PETRI_TRANSITIONS=27} [2023-11-29 00:36:47,702 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 21 predicate places. [2023-11-29 00:36:47,702 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 27 transitions, 145 flow [2023-11-29 00:36:47,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 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) [2023-11-29 00:36:47,702 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:36:47,702 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:36:47,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 00:36:47,703 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-29 00:36:47,703 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:36:47,703 INFO L85 PathProgramCache]: Analyzing trace with hash 1764718834, now seen corresponding path program 1 times [2023-11-29 00:36:47,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:36:47,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030223116] [2023-11-29 00:36:47,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:36:47,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:36:47,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:36:47,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:36:47,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:36:47,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030223116] [2023-11-29 00:36:47,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030223116] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:36:47,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:36:47,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 00:36:47,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129686823] [2023-11-29 00:36:47,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:36:47,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 00:36:47,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:36:47,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 00:36:47,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 00:36:47,824 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 26 [2023-11-29 00:36:47,824 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 27 transitions, 145 flow. Second operand has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 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) [2023-11-29 00:36:47,825 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:36:47,825 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 26 [2023-11-29 00:36:47,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:36:47,973 INFO L124 PetriNetUnfolderBase]: 29/97 cut-off events. [2023-11-29 00:36:47,973 INFO L125 PetriNetUnfolderBase]: For 156/158 co-relation queries the response was YES. [2023-11-29 00:36:47,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 292 conditions, 97 events. 29/97 cut-off events. For 156/158 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 321 event pairs, 6 based on Foata normal form. 9/106 useless extension candidates. Maximal degree in co-relation 267. Up to 46 conditions per place. [2023-11-29 00:36:47,975 INFO L140 encePairwiseOnDemand]: 17/26 looper letters, 22 selfloop transitions, 9 changer transitions 2/37 dead transitions. [2023-11-29 00:36:47,975 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 37 transitions, 241 flow [2023-11-29 00:36:47,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 00:36:47,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-29 00:36:47,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 75 transitions. [2023-11-29 00:36:47,977 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3605769230769231 [2023-11-29 00:36:47,977 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 75 transitions. [2023-11-29 00:36:47,977 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 75 transitions. [2023-11-29 00:36:47,978 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:36:47,978 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 75 transitions. [2023-11-29 00:36:47,978 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 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) [2023-11-29 00:36:47,979 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 26.0) internal successors, (234), 9 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:36:47,980 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 26.0) internal successors, (234), 9 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:36:47,980 INFO L175 Difference]: Start difference. First operand has 46 places, 27 transitions, 145 flow. Second operand 8 states and 75 transitions. [2023-11-29 00:36:47,980 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 37 transitions, 241 flow [2023-11-29 00:36:47,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 37 transitions, 210 flow, removed 2 selfloop flow, removed 6 redundant places. [2023-11-29 00:36:47,984 INFO L231 Difference]: Finished difference. Result has 47 places, 25 transitions, 125 flow [2023-11-29 00:36:47,984 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=125, PETRI_PLACES=47, PETRI_TRANSITIONS=25} [2023-11-29 00:36:47,985 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 22 predicate places. [2023-11-29 00:36:47,985 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 25 transitions, 125 flow [2023-11-29 00:36:47,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 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) [2023-11-29 00:36:47,986 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:36:47,986 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:36:47,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 00:36:47,986 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-29 00:36:47,987 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:36:47,987 INFO L85 PathProgramCache]: Analyzing trace with hash 404617243, now seen corresponding path program 1 times [2023-11-29 00:36:47,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:36:47,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330787227] [2023-11-29 00:36:47,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:36:47,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:36:48,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:36:48,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:36:48,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:36:48,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330787227] [2023-11-29 00:36:48,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330787227] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:36:48,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:36:48,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:36:48,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494386859] [2023-11-29 00:36:48,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:36:48,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:36:48,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:36:48,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:36:48,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:36:48,042 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 26 [2023-11-29 00:36:48,043 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 25 transitions, 125 flow. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 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) [2023-11-29 00:36:48,043 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:36:48,043 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 26 [2023-11-29 00:36:48,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:36:48,082 INFO L124 PetriNetUnfolderBase]: 15/65 cut-off events. [2023-11-29 00:36:48,082 INFO L125 PetriNetUnfolderBase]: For 74/74 co-relation queries the response was YES. [2023-11-29 00:36:48,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 193 conditions, 65 events. 15/65 cut-off events. For 74/74 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 171 event pairs, 3 based on Foata normal form. 6/71 useless extension candidates. Maximal degree in co-relation 170. Up to 30 conditions per place. [2023-11-29 00:36:48,083 INFO L140 encePairwiseOnDemand]: 22/26 looper letters, 20 selfloop transitions, 4 changer transitions 0/30 dead transitions. [2023-11-29 00:36:48,083 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 30 transitions, 191 flow [2023-11-29 00:36:48,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:36:48,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 00:36:48,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 42 transitions. [2023-11-29 00:36:48,085 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5384615384615384 [2023-11-29 00:36:48,085 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 42 transitions. [2023-11-29 00:36:48,085 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 42 transitions. [2023-11-29 00:36:48,085 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:36:48,085 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 42 transitions. [2023-11-29 00:36:48,086 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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) [2023-11-29 00:36:48,086 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 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) [2023-11-29 00:36:48,086 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 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) [2023-11-29 00:36:48,087 INFO L175 Difference]: Start difference. First operand has 47 places, 25 transitions, 125 flow. Second operand 3 states and 42 transitions. [2023-11-29 00:36:48,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 30 transitions, 191 flow [2023-11-29 00:36:48,088 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 30 transitions, 169 flow, removed 2 selfloop flow, removed 7 redundant places. [2023-11-29 00:36:48,089 INFO L231 Difference]: Finished difference. Result has 42 places, 25 transitions, 113 flow [2023-11-29 00:36:48,089 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=105, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=113, PETRI_PLACES=42, PETRI_TRANSITIONS=25} [2023-11-29 00:36:48,090 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 17 predicate places. [2023-11-29 00:36:48,090 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 25 transitions, 113 flow [2023-11-29 00:36:48,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 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) [2023-11-29 00:36:48,091 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:36:48,091 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:36:48,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 00:36:48,091 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-29 00:36:48,092 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:36:48,092 INFO L85 PathProgramCache]: Analyzing trace with hash 1825062693, now seen corresponding path program 1 times [2023-11-29 00:36:48,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:36:48,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556023798] [2023-11-29 00:36:48,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:36:48,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:36:48,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:36:48,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:36:48,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:36:48,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556023798] [2023-11-29 00:36:48,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556023798] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:36:48,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:36:48,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 00:36:48,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533707404] [2023-11-29 00:36:48,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:36:48,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 00:36:48,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:36:48,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 00:36:48,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-29 00:36:48,265 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 26 [2023-11-29 00:36:48,265 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 25 transitions, 113 flow. Second operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 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) [2023-11-29 00:36:48,265 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:36:48,265 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 26 [2023-11-29 00:36:48,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:36:48,421 INFO L124 PetriNetUnfolderBase]: 19/65 cut-off events. [2023-11-29 00:36:48,421 INFO L125 PetriNetUnfolderBase]: For 37/37 co-relation queries the response was YES. [2023-11-29 00:36:48,422 INFO L83 FinitePrefix]: Finished finitePrefix Result has 195 conditions, 65 events. 19/65 cut-off events. For 37/37 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 151 event pairs, 2 based on Foata normal form. 4/69 useless extension candidates. Maximal degree in co-relation 175. Up to 29 conditions per place. [2023-11-29 00:36:48,422 INFO L140 encePairwiseOnDemand]: 17/26 looper letters, 18 selfloop transitions, 13 changer transitions 0/32 dead transitions. [2023-11-29 00:36:48,422 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 32 transitions, 196 flow [2023-11-29 00:36:48,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 00:36:48,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-29 00:36:48,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 46 transitions. [2023-11-29 00:36:48,425 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.22115384615384615 [2023-11-29 00:36:48,425 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 46 transitions. [2023-11-29 00:36:48,425 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 46 transitions. [2023-11-29 00:36:48,425 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:36:48,425 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 46 transitions. [2023-11-29 00:36:48,426 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:36:48,426 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 26.0) internal successors, (234), 9 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:36:48,427 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 26.0) internal successors, (234), 9 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:36:48,427 INFO L175 Difference]: Start difference. First operand has 42 places, 25 transitions, 113 flow. Second operand 8 states and 46 transitions. [2023-11-29 00:36:48,427 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 32 transitions, 196 flow [2023-11-29 00:36:48,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 32 transitions, 182 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-29 00:36:48,429 INFO L231 Difference]: Finished difference. Result has 42 places, 25 transitions, 130 flow [2023-11-29 00:36:48,429 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=93, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=130, PETRI_PLACES=42, PETRI_TRANSITIONS=25} [2023-11-29 00:36:48,430 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 17 predicate places. [2023-11-29 00:36:48,430 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 25 transitions, 130 flow [2023-11-29 00:36:48,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 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) [2023-11-29 00:36:48,430 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:36:48,431 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:36:48,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 00:36:48,431 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-29 00:36:48,431 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:36:48,431 INFO L85 PathProgramCache]: Analyzing trace with hash -644637633, now seen corresponding path program 1 times [2023-11-29 00:36:48,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:36:48,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652346901] [2023-11-29 00:36:48,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:36:48,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:36:48,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:36:48,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:36:48,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:36:48,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652346901] [2023-11-29 00:36:48,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652346901] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:36:48,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:36:48,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 00:36:48,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210291591] [2023-11-29 00:36:48,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:36:48,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 00:36:48,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:36:48,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 00:36:48,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-11-29 00:36:48,646 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 26 [2023-11-29 00:36:48,647 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 25 transitions, 130 flow. Second operand has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 9 states have internal predecessors, (39), 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) [2023-11-29 00:36:48,647 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:36:48,647 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 26 [2023-11-29 00:36:48,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:36:48,827 INFO L124 PetriNetUnfolderBase]: 18/74 cut-off events. [2023-11-29 00:36:48,827 INFO L125 PetriNetUnfolderBase]: For 85/85 co-relation queries the response was YES. [2023-11-29 00:36:48,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 219 conditions, 74 events. 18/74 cut-off events. For 85/85 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 213 event pairs, 7 based on Foata normal form. 2/76 useless extension candidates. Maximal degree in co-relation 198. Up to 37 conditions per place. [2023-11-29 00:36:48,828 INFO L140 encePairwiseOnDemand]: 17/26 looper letters, 18 selfloop transitions, 9 changer transitions 8/37 dead transitions. [2023-11-29 00:36:48,828 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 37 transitions, 240 flow [2023-11-29 00:36:48,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 00:36:48,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 00:36:48,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 65 transitions. [2023-11-29 00:36:48,830 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.25 [2023-11-29 00:36:48,830 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 65 transitions. [2023-11-29 00:36:48,830 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 65 transitions. [2023-11-29 00:36:48,831 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:36:48,831 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 65 transitions. [2023-11-29 00:36:48,832 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 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) [2023-11-29 00:36:48,833 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 26.0) internal successors, (286), 11 states have internal predecessors, (286), 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) [2023-11-29 00:36:48,833 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 26.0) internal successors, (286), 11 states have internal predecessors, (286), 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) [2023-11-29 00:36:48,833 INFO L175 Difference]: Start difference. First operand has 42 places, 25 transitions, 130 flow. Second operand 10 states and 65 transitions. [2023-11-29 00:36:48,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 37 transitions, 240 flow [2023-11-29 00:36:48,834 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 37 transitions, 229 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-29 00:36:48,835 INFO L231 Difference]: Finished difference. Result has 49 places, 24 transitions, 135 flow [2023-11-29 00:36:48,836 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=135, PETRI_PLACES=49, PETRI_TRANSITIONS=24} [2023-11-29 00:36:48,836 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 24 predicate places. [2023-11-29 00:36:48,836 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 24 transitions, 135 flow [2023-11-29 00:36:48,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 9 states have internal predecessors, (39), 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) [2023-11-29 00:36:48,837 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:36:48,837 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:36:48,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 00:36:48,838 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-29 00:36:48,838 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:36:48,838 INFO L85 PathProgramCache]: Analyzing trace with hash -1608612450, now seen corresponding path program 1 times [2023-11-29 00:36:48,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:36:48,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380049768] [2023-11-29 00:36:48,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:36:48,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:36:48,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:36:49,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:36:49,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:36:49,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380049768] [2023-11-29 00:36:49,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380049768] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:36:49,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:36:49,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 00:36:49,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629211975] [2023-11-29 00:36:49,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:36:49,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 00:36:49,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:36:49,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 00:36:49,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-11-29 00:36:49,069 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 26 [2023-11-29 00:36:49,069 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 24 transitions, 135 flow. Second operand has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 9 states have internal predecessors, (39), 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) [2023-11-29 00:36:49,069 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:36:49,070 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 26 [2023-11-29 00:36:49,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:36:49,219 INFO L124 PetriNetUnfolderBase]: 15/58 cut-off events. [2023-11-29 00:36:49,219 INFO L125 PetriNetUnfolderBase]: For 93/95 co-relation queries the response was YES. [2023-11-29 00:36:49,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 190 conditions, 58 events. 15/58 cut-off events. For 93/95 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 123 event pairs, 4 based on Foata normal form. 4/62 useless extension candidates. Maximal degree in co-relation 169. Up to 19 conditions per place. [2023-11-29 00:36:49,220 INFO L140 encePairwiseOnDemand]: 17/26 looper letters, 8 selfloop transitions, 7 changer transitions 13/30 dead transitions. [2023-11-29 00:36:49,220 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 30 transitions, 204 flow [2023-11-29 00:36:49,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 00:36:49,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-29 00:36:49,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 62 transitions. [2023-11-29 00:36:49,222 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.21678321678321677 [2023-11-29 00:36:49,222 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 62 transitions. [2023-11-29 00:36:49,222 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 62 transitions. [2023-11-29 00:36:49,222 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:36:49,222 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 62 transitions. [2023-11-29 00:36:49,223 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 5.636363636363637) internal successors, (62), 11 states have internal predecessors, (62), 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) [2023-11-29 00:36:49,224 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 26.0) internal successors, (312), 12 states have internal predecessors, (312), 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) [2023-11-29 00:36:49,224 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 26.0) internal successors, (312), 12 states have internal predecessors, (312), 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) [2023-11-29 00:36:49,224 INFO L175 Difference]: Start difference. First operand has 49 places, 24 transitions, 135 flow. Second operand 11 states and 62 transitions. [2023-11-29 00:36:49,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 30 transitions, 204 flow [2023-11-29 00:36:49,226 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 30 transitions, 180 flow, removed 2 selfloop flow, removed 9 redundant places. [2023-11-29 00:36:49,226 INFO L231 Difference]: Finished difference. Result has 45 places, 17 transitions, 90 flow [2023-11-29 00:36:49,227 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=107, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=90, PETRI_PLACES=45, PETRI_TRANSITIONS=17} [2023-11-29 00:36:49,227 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 20 predicate places. [2023-11-29 00:36:49,227 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 17 transitions, 90 flow [2023-11-29 00:36:49,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 9 states have internal predecessors, (39), 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) [2023-11-29 00:36:49,228 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:36:49,228 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:36:49,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-29 00:36:49,228 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-29 00:36:49,229 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:36:49,229 INFO L85 PathProgramCache]: Analyzing trace with hash 1807087825, now seen corresponding path program 2 times [2023-11-29 00:36:49,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:36:49,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666079905] [2023-11-29 00:36:49,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:36:49,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:36:49,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:36:49,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:36:49,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:36:49,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666079905] [2023-11-29 00:36:49,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666079905] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:36:49,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:36:49,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 00:36:49,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625155292] [2023-11-29 00:36:49,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:36:49,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 00:36:49,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:36:49,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 00:36:49,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-11-29 00:36:49,453 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 26 [2023-11-29 00:36:49,454 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 17 transitions, 90 flow. Second operand has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 9 states have internal predecessors, (39), 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) [2023-11-29 00:36:49,454 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:36:49,454 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 26 [2023-11-29 00:36:49,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:36:49,576 INFO L124 PetriNetUnfolderBase]: 7/38 cut-off events. [2023-11-29 00:36:49,577 INFO L125 PetriNetUnfolderBase]: For 46/48 co-relation queries the response was YES. [2023-11-29 00:36:49,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117 conditions, 38 events. 7/38 cut-off events. For 46/48 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 61 event pairs, 6 based on Foata normal form. 4/42 useless extension candidates. Maximal degree in co-relation 96. Up to 18 conditions per place. [2023-11-29 00:36:49,577 INFO L140 encePairwiseOnDemand]: 18/26 looper letters, 8 selfloop transitions, 5 changer transitions 7/22 dead transitions. [2023-11-29 00:36:49,577 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 22 transitions, 145 flow [2023-11-29 00:36:49,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 00:36:49,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-29 00:36:49,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 48 transitions. [2023-11-29 00:36:49,578 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.20512820512820512 [2023-11-29 00:36:49,579 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 48 transitions. [2023-11-29 00:36:49,579 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 48 transitions. [2023-11-29 00:36:49,579 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:36:49,579 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 48 transitions. [2023-11-29 00:36:49,579 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 5.333333333333333) internal successors, (48), 9 states have internal predecessors, (48), 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) [2023-11-29 00:36:49,580 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 26.0) internal successors, (260), 10 states have internal predecessors, (260), 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) [2023-11-29 00:36:49,580 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 26.0) internal successors, (260), 10 states have internal predecessors, (260), 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) [2023-11-29 00:36:49,581 INFO L175 Difference]: Start difference. First operand has 45 places, 17 transitions, 90 flow. Second operand 9 states and 48 transitions. [2023-11-29 00:36:49,581 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 22 transitions, 145 flow [2023-11-29 00:36:49,581 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 22 transitions, 103 flow, removed 2 selfloop flow, removed 14 redundant places. [2023-11-29 00:36:49,582 INFO L231 Difference]: Finished difference. Result has 33 places, 15 transitions, 58 flow [2023-11-29 00:36:49,583 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=51, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=58, PETRI_PLACES=33, PETRI_TRANSITIONS=15} [2023-11-29 00:36:49,583 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 8 predicate places. [2023-11-29 00:36:49,583 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 15 transitions, 58 flow [2023-11-29 00:36:49,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 9 states have internal predecessors, (39), 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) [2023-11-29 00:36:49,584 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:36:49,584 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:36:49,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-29 00:36:49,584 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-29 00:36:49,584 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:36:49,584 INFO L85 PathProgramCache]: Analyzing trace with hash 949997233, now seen corresponding path program 3 times [2023-11-29 00:36:49,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:36:49,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303613388] [2023-11-29 00:36:49,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:36:49,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:36:49,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:36:49,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:36:49,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:36:49,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303613388] [2023-11-29 00:36:49,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303613388] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:36:49,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:36:49,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 00:36:49,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834257470] [2023-11-29 00:36:49,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:36:49,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 00:36:49,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:36:49,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 00:36:49,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-11-29 00:36:49,782 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 26 [2023-11-29 00:36:49,782 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 15 transitions, 58 flow. Second operand has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 9 states have internal predecessors, (39), 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) [2023-11-29 00:36:49,782 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:36:49,782 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 26 [2023-11-29 00:36:49,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:36:49,863 INFO L124 PetriNetUnfolderBase]: 4/23 cut-off events. [2023-11-29 00:36:49,863 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-11-29 00:36:49,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67 conditions, 23 events. 4/23 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 16 event pairs, 0 based on Foata normal form. 2/25 useless extension candidates. Maximal degree in co-relation 60. Up to 8 conditions per place. [2023-11-29 00:36:49,863 INFO L140 encePairwiseOnDemand]: 18/26 looper letters, 0 selfloop transitions, 0 changer transitions 17/17 dead transitions. [2023-11-29 00:36:49,863 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 17 transitions, 90 flow [2023-11-29 00:36:49,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 00:36:49,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-29 00:36:49,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 43 transitions. [2023-11-29 00:36:49,864 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.18376068376068377 [2023-11-29 00:36:49,865 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 43 transitions. [2023-11-29 00:36:49,865 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 43 transitions. [2023-11-29 00:36:49,865 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:36:49,865 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 43 transitions. [2023-11-29 00:36:49,865 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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) [2023-11-29 00:36:49,866 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 26.0) internal successors, (260), 10 states have internal predecessors, (260), 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) [2023-11-29 00:36:49,866 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 26.0) internal successors, (260), 10 states have internal predecessors, (260), 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) [2023-11-29 00:36:49,866 INFO L175 Difference]: Start difference. First operand has 33 places, 15 transitions, 58 flow. Second operand 9 states and 43 transitions. [2023-11-29 00:36:49,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 17 transitions, 90 flow [2023-11-29 00:36:49,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 17 transitions, 76 flow, removed 1 selfloop flow, removed 7 redundant places. [2023-11-29 00:36:49,868 INFO L231 Difference]: Finished difference. Result has 28 places, 0 transitions, 0 flow [2023-11-29 00:36:49,868 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=39, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=0, PETRI_PLACES=28, PETRI_TRANSITIONS=0} [2023-11-29 00:36:49,868 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 3 predicate places. [2023-11-29 00:36:49,869 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 0 transitions, 0 flow [2023-11-29 00:36:49,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 9 states have internal predecessors, (39), 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) [2023-11-29 00:36:49,871 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 7 remaining) [2023-11-29 00:36:49,872 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 7 remaining) [2023-11-29 00:36:49,872 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 7 remaining) [2023-11-29 00:36:49,873 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 7 remaining) [2023-11-29 00:36:49,873 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 7 remaining) [2023-11-29 00:36:49,873 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 7 remaining) [2023-11-29 00:36:49,873 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 7 remaining) [2023-11-29 00:36:49,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-29 00:36:49,874 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:36:49,878 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-29 00:36:49,878 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-29 00:36:49,882 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 12:36:49 BasicIcfg [2023-11-29 00:36:49,882 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-29 00:36:49,882 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-29 00:36:49,882 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-29 00:36:49,883 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-29 00:36:49,883 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:36:46" (3/4) ... [2023-11-29 00:36:49,884 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-29 00:36:49,887 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2023-11-29 00:36:49,891 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 43 nodes and edges [2023-11-29 00:36:49,891 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2023-11-29 00:36:49,891 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-29 00:36:49,891 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-29 00:36:49,954 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b04dd9b-e46b-4222-9929-2f4a82eff5ef/bin/uautomizer-verify-BQ2R08f2Ya/witness.graphml [2023-11-29 00:36:49,954 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b04dd9b-e46b-4222-9929-2f4a82eff5ef/bin/uautomizer-verify-BQ2R08f2Ya/witness.yml [2023-11-29 00:36:49,955 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-29 00:36:49,955 INFO L158 Benchmark]: Toolchain (without parser) took 5012.14ms. Allocated memory was 144.7MB in the beginning and 184.5MB in the end (delta: 39.8MB). Free memory was 110.8MB in the beginning and 120.9MB in the end (delta: -10.1MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. [2023-11-29 00:36:49,956 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 144.7MB. Free memory is still 117.7MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 00:36:49,956 INFO L158 Benchmark]: CACSL2BoogieTranslator took 619.97ms. Allocated memory is still 144.7MB. Free memory was 110.3MB in the beginning and 82.6MB in the end (delta: 27.7MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2023-11-29 00:36:49,956 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.79ms. Allocated memory is still 144.7MB. Free memory was 82.6MB in the beginning and 80.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 00:36:49,957 INFO L158 Benchmark]: Boogie Preprocessor took 45.01ms. Allocated memory is still 144.7MB. Free memory was 80.5MB in the beginning and 78.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 00:36:49,957 INFO L158 Benchmark]: RCFGBuilder took 500.86ms. Allocated memory is still 144.7MB. Free memory was 78.4MB in the beginning and 49.0MB in the end (delta: 29.4MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2023-11-29 00:36:49,957 INFO L158 Benchmark]: TraceAbstraction took 3720.28ms. Allocated memory was 144.7MB in the beginning and 184.5MB in the end (delta: 39.8MB). Free memory was 48.6MB in the beginning and 125.1MB in the end (delta: -76.5MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 00:36:49,958 INFO L158 Benchmark]: Witness Printer took 72.21ms. Allocated memory is still 184.5MB. Free memory was 125.1MB in the beginning and 120.9MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-29 00:36:49,959 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 144.7MB. Free memory is still 117.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 619.97ms. Allocated memory is still 144.7MB. Free memory was 110.3MB in the beginning and 82.6MB in the end (delta: 27.7MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 46.79ms. Allocated memory is still 144.7MB. Free memory was 82.6MB in the beginning and 80.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 45.01ms. Allocated memory is still 144.7MB. Free memory was 80.5MB in the beginning and 78.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 500.86ms. Allocated memory is still 144.7MB. Free memory was 78.4MB in the beginning and 49.0MB in the end (delta: 29.4MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * TraceAbstraction took 3720.28ms. Allocated memory was 144.7MB in the beginning and 184.5MB in the end (delta: 39.8MB). Free memory was 48.6MB in the beginning and 125.1MB in the end (delta: -76.5MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 72.21ms. Allocated memory is still 184.5MB. Free memory was 125.1MB in the beginning and 120.9MB 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: - PositiveResult [Line: 936]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 936]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 924]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 924]: 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 3 procedures, 37 locations, 7 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 3.6s, OverallIterations: 10, TraceHistogramMax: 1, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 1.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 355 SdHoareTripleChecker+Valid, 0.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 310 mSDsluCounter, 439 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 416 mSDsCounter, 34 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1161 IncrementalHoareTripleChecker+Invalid, 1195 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 34 mSolverCounterUnsat, 23 mSDtfsCounter, 1161 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 81 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=150occurred in iteration=2, InterpolantAutomatonStates: 79, 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, 1.4s InterpolantComputationTime, 111 NumberOfCodeBlocks, 111 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 101 ConstructedInterpolants, 0 QuantifiedInterpolants, 771 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! [2023-11-29 00:36:49,976 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b04dd9b-e46b-4222-9929-2f4a82eff5ef/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (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