./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_41-trylock_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1a9596-611f-4c8f-95d4-4f6d6c11ce16/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1a9596-611f-4c8f-95d4-4f6d6c11ce16/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1a9596-611f-4c8f-95d4-4f6d6c11ce16/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1a9596-611f-4c8f-95d4-4f6d6c11ce16/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_41-trylock_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1a9596-611f-4c8f-95d4-4f6d6c11ce16/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1a9596-611f-4c8f-95d4-4f6d6c11ce16/bin/uautomizer-verify-uCwYo4JHxu --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 af00d5f4cc6a18cb9fd8a5151467217fe3ddb5ee0fa30b2cfbd9dd374105ee15 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 08:07:04,640 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 08:07:04,764 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1a9596-611f-4c8f-95d4-4f6d6c11ce16/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-19 08:07:04,771 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 08:07:04,772 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 08:07:04,811 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 08:07:04,812 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 08:07:04,813 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 08:07:04,814 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 08:07:04,819 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 08:07:04,820 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 08:07:04,821 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 08:07:04,821 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 08:07:04,823 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 08:07:04,823 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 08:07:04,824 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 08:07:04,824 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 08:07:04,825 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 08:07:04,825 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 08:07:04,826 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 08:07:04,826 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 08:07:04,827 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 08:07:04,827 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 08:07:04,828 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 08:07:04,828 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 08:07:04,828 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 08:07:04,829 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 08:07:04,830 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 08:07:04,830 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 08:07:04,831 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 08:07:04,832 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:07:04,832 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 08:07:04,833 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 08:07:04,833 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 08:07:04,833 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 08:07:04,834 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 08:07:04,834 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 08:07:04,834 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 08:07:04,834 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 08:07:04,835 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 08:07:04,835 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 08:07:04,835 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_3f1a9596-611f-4c8f-95d4-4f6d6c11ce16/bin/uautomizer-verify-uCwYo4JHxu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1a9596-611f-4c8f-95d4-4f6d6c11ce16/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> af00d5f4cc6a18cb9fd8a5151467217fe3ddb5ee0fa30b2cfbd9dd374105ee15 [2023-11-19 08:07:05,143 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 08:07:05,167 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 08:07:05,170 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 08:07:05,171 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 08:07:05,172 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 08:07:05,174 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1a9596-611f-4c8f-95d4-4f6d6c11ce16/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/goblint-regression/28-race_reach_41-trylock_racefree.i [2023-11-19 08:07:08,246 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 08:07:08,521 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 08:07:08,527 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1a9596-611f-4c8f-95d4-4f6d6c11ce16/sv-benchmarks/c/goblint-regression/28-race_reach_41-trylock_racefree.i [2023-11-19 08:07:08,546 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1a9596-611f-4c8f-95d4-4f6d6c11ce16/bin/uautomizer-verify-uCwYo4JHxu/data/e418dae8d/4d05b98f4b6a4bb082af151c52bf78d7/FLAGed1023e85 [2023-11-19 08:07:08,562 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1a9596-611f-4c8f-95d4-4f6d6c11ce16/bin/uautomizer-verify-uCwYo4JHxu/data/e418dae8d/4d05b98f4b6a4bb082af151c52bf78d7 [2023-11-19 08:07:08,565 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 08:07:08,566 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 08:07:08,568 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 08:07:08,568 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 08:07:08,573 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 08:07:08,574 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:07:08" (1/1) ... [2023-11-19 08:07:08,575 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35385023 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:07:08, skipping insertion in model container [2023-11-19 08:07:08,576 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:07:08" (1/1) ... [2023-11-19 08:07:08,641 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 08:07:09,028 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:07:09,044 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 08:07:09,118 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:07:09,172 INFO L206 MainTranslator]: Completed translation [2023-11-19 08:07:09,173 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:07:09 WrapperNode [2023-11-19 08:07:09,173 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 08:07:09,175 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 08:07:09,175 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 08:07:09,175 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 08:07:09,183 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:07:09" (1/1) ... [2023-11-19 08:07:09,216 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:07:09" (1/1) ... [2023-11-19 08:07:09,241 INFO L138 Inliner]: procedures = 171, calls = 31, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 85 [2023-11-19 08:07:09,241 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 08:07:09,242 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 08:07:09,242 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 08:07:09,242 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 08:07:09,252 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:07:09" (1/1) ... [2023-11-19 08:07:09,252 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:07:09" (1/1) ... [2023-11-19 08:07:09,255 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:07:09" (1/1) ... [2023-11-19 08:07:09,256 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:07:09" (1/1) ... [2023-11-19 08:07:09,263 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:07:09" (1/1) ... [2023-11-19 08:07:09,268 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:07:09" (1/1) ... [2023-11-19 08:07:09,270 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:07:09" (1/1) ... [2023-11-19 08:07:09,272 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:07:09" (1/1) ... [2023-11-19 08:07:09,275 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 08:07:09,276 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 08:07:09,276 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 08:07:09,277 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 08:07:09,277 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:07:09" (1/1) ... [2023-11-19 08:07:09,283 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:07:09,296 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1a9596-611f-4c8f-95d4-4f6d6c11ce16/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:07:09,308 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1a9596-611f-4c8f-95d4-4f6d6c11ce16/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 08:07:09,338 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1a9596-611f-4c8f-95d4-4f6d6c11ce16/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 08:07:09,351 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 08:07:09,352 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 08:07:09,352 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-19 08:07:09,352 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 08:07:09,353 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 08:07:09,353 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-19 08:07:09,353 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-19 08:07:09,353 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 08:07:09,354 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexTryLock [2023-11-19 08:07:09,354 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 08:07:09,354 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 08:07:09,354 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 08:07:09,356 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-19 08:07:09,516 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 08:07:09,519 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 08:07:09,746 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 08:07:09,756 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 08:07:09,756 INFO L302 CfgBuilder]: Removed 11 assume(true) statements. [2023-11-19 08:07:09,761 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:07:09 BoogieIcfgContainer [2023-11-19 08:07:09,761 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 08:07:09,763 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 08:07:09,763 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 08:07:09,767 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 08:07:09,767 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:07:08" (1/3) ... [2023-11-19 08:07:09,768 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f15e714 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:07:09, skipping insertion in model container [2023-11-19 08:07:09,768 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:07:09" (2/3) ... [2023-11-19 08:07:09,768 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f15e714 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:07:09, skipping insertion in model container [2023-11-19 08:07:09,768 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:07:09" (3/3) ... [2023-11-19 08:07:09,769 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_41-trylock_racefree.i [2023-11-19 08:07:09,787 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 08:07:09,795 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 08:07:09,795 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-11-19 08:07:09,796 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 08:07:09,858 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-11-19 08:07:09,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 115 places, 127 transitions, 261 flow [2023-11-19 08:07:09,978 INFO L124 PetriNetUnfolderBase]: 23/173 cut-off events. [2023-11-19 08:07:09,978 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-19 08:07:09,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 178 conditions, 173 events. 23/173 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 473 event pairs, 0 based on Foata normal form. 0/139 useless extension candidates. Maximal degree in co-relation 91. Up to 6 conditions per place. [2023-11-19 08:07:09,987 INFO L82 GeneralOperation]: Start removeDead. Operand has 115 places, 127 transitions, 261 flow [2023-11-19 08:07:09,993 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 113 places, 124 transitions, 255 flow [2023-11-19 08:07:09,997 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 08:07:10,007 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 113 places, 124 transitions, 255 flow [2023-11-19 08:07:10,011 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 113 places, 124 transitions, 255 flow [2023-11-19 08:07:10,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 113 places, 124 transitions, 255 flow [2023-11-19 08:07:10,076 INFO L124 PetriNetUnfolderBase]: 22/170 cut-off events. [2023-11-19 08:07:10,083 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-19 08:07:10,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 175 conditions, 170 events. 22/170 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 471 event pairs, 0 based on Foata normal form. 0/137 useless extension candidates. Maximal degree in co-relation 91. Up to 6 conditions per place. [2023-11-19 08:07:10,090 INFO L119 LiptonReduction]: Number of co-enabled transitions 4032 [2023-11-19 08:07:13,061 INFO L134 LiptonReduction]: Checked pairs total: 6087 [2023-11-19 08:07:13,061 INFO L136 LiptonReduction]: Total number of compositions: 114 [2023-11-19 08:07:13,078 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 08:07:13,085 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;@1778fa4b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 08:07:13,085 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2023-11-19 08:07:13,089 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 08:07:13,089 INFO L124 PetriNetUnfolderBase]: 3/12 cut-off events. [2023-11-19 08:07:13,089 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 08:07:13,089 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:07:13,090 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-19 08:07:13,091 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-19 08:07:13,096 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:07:13,096 INFO L85 PathProgramCache]: Analyzing trace with hash 15345179, now seen corresponding path program 1 times [2023-11-19 08:07:13,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:07:13,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254547516] [2023-11-19 08:07:13,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:07:13,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:07:13,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:13,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:07:13,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:07:13,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254547516] [2023-11-19 08:07:13,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254547516] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:07:13,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:07:13,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 08:07:13,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103552059] [2023-11-19 08:07:13,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:07:13,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:07:13,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:07:13,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:07:13,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:07:13,456 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 241 [2023-11-19 08:07:13,459 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 41 transitions, 89 flow. Second operand has 3 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 states have internal predecessors, (319), 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) [2023-11-19 08:07:13,460 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:07:13,460 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 241 [2023-11-19 08:07:13,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:07:13,586 INFO L124 PetriNetUnfolderBase]: 109/258 cut-off events. [2023-11-19 08:07:13,588 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-19 08:07:13,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 495 conditions, 258 events. 109/258 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1178 event pairs, 0 based on Foata normal form. 9/204 useless extension candidates. Maximal degree in co-relation 464. Up to 217 conditions per place. [2023-11-19 08:07:13,593 INFO L140 encePairwiseOnDemand]: 226/241 looper letters, 37 selfloop transitions, 2 changer transitions 0/42 dead transitions. [2023-11-19 08:07:13,595 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 42 transitions, 169 flow [2023-11-19 08:07:13,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:07:13,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 08:07:13,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 373 transitions. [2023-11-19 08:07:13,622 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5159059474412172 [2023-11-19 08:07:13,623 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 373 transitions. [2023-11-19 08:07:13,624 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 373 transitions. [2023-11-19 08:07:13,629 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:07:13,632 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 373 transitions. [2023-11-19 08:07:13,640 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 124.33333333333333) internal successors, (373), 3 states have internal predecessors, (373), 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) [2023-11-19 08:07:13,664 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 241.0) internal successors, (964), 4 states have internal predecessors, (964), 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) [2023-11-19 08:07:13,665 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 241.0) internal successors, (964), 4 states have internal predecessors, (964), 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) [2023-11-19 08:07:13,668 INFO L175 Difference]: Start difference. First operand has 34 places, 41 transitions, 89 flow. Second operand 3 states and 373 transitions. [2023-11-19 08:07:13,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 42 transitions, 169 flow [2023-11-19 08:07:13,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 42 transitions, 169 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 08:07:13,675 INFO L231 Difference]: Finished difference. Result has 34 places, 29 transitions, 73 flow [2023-11-19 08:07:13,677 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=65, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=73, PETRI_PLACES=34, PETRI_TRANSITIONS=29} [2023-11-19 08:07:13,681 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 0 predicate places. [2023-11-19 08:07:13,682 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 29 transitions, 73 flow [2023-11-19 08:07:13,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 states have internal predecessors, (319), 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) [2023-11-19 08:07:13,683 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:07:13,683 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-11-19 08:07:13,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 08:07:13,685 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-19 08:07:13,688 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:07:13,688 INFO L85 PathProgramCache]: Analyzing trace with hash 1861833465, now seen corresponding path program 1 times [2023-11-19 08:07:13,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:07:13,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868535879] [2023-11-19 08:07:13,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:07:13,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:07:13,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:07:13,752 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 08:07:13,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:07:13,790 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 08:07:13,791 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 08:07:13,793 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2023-11-19 08:07:13,794 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2023-11-19 08:07:13,795 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2023-11-19 08:07:13,795 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2023-11-19 08:07:13,795 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 13 remaining) [2023-11-19 08:07:13,796 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 13 remaining) [2023-11-19 08:07:13,796 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 13 remaining) [2023-11-19 08:07:13,796 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 13 remaining) [2023-11-19 08:07:13,796 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 13 remaining) [2023-11-19 08:07:13,797 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 13 remaining) [2023-11-19 08:07:13,797 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2023-11-19 08:07:13,797 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2023-11-19 08:07:13,797 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2023-11-19 08:07:13,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 08:07:13,798 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-19 08:07:13,801 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-19 08:07:13,801 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-19 08:07:13,835 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-19 08:07:13,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 148 places, 165 transitions, 346 flow [2023-11-19 08:07:13,890 INFO L124 PetriNetUnfolderBase]: 40/295 cut-off events. [2023-11-19 08:07:13,890 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-19 08:07:13,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 307 conditions, 295 events. 40/295 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 952 event pairs, 0 based on Foata normal form. 0/233 useless extension candidates. Maximal degree in co-relation 175. Up to 9 conditions per place. [2023-11-19 08:07:13,895 INFO L82 GeneralOperation]: Start removeDead. Operand has 148 places, 165 transitions, 346 flow [2023-11-19 08:07:13,899 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 148 places, 165 transitions, 346 flow [2023-11-19 08:07:13,899 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 08:07:13,899 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 148 places, 165 transitions, 346 flow [2023-11-19 08:07:13,900 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 148 places, 165 transitions, 346 flow [2023-11-19 08:07:13,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 148 places, 165 transitions, 346 flow [2023-11-19 08:07:13,941 INFO L124 PetriNetUnfolderBase]: 40/295 cut-off events. [2023-11-19 08:07:13,942 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-19 08:07:13,945 INFO L83 FinitePrefix]: Finished finitePrefix Result has 307 conditions, 295 events. 40/295 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 952 event pairs, 0 based on Foata normal form. 0/233 useless extension candidates. Maximal degree in co-relation 175. Up to 9 conditions per place. [2023-11-19 08:07:13,956 INFO L119 LiptonReduction]: Number of co-enabled transitions 12024 [2023-11-19 08:07:17,164 INFO L134 LiptonReduction]: Checked pairs total: 27412 [2023-11-19 08:07:17,164 INFO L136 LiptonReduction]: Total number of compositions: 136 [2023-11-19 08:07:17,167 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 08:07:17,169 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;@1778fa4b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 08:07:17,169 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2023-11-19 08:07:17,173 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 08:07:17,173 INFO L124 PetriNetUnfolderBase]: 4/17 cut-off events. [2023-11-19 08:07:17,173 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 08:07:17,173 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:07:17,173 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 08:07:17,174 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-19 08:07:17,174 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:07:17,174 INFO L85 PathProgramCache]: Analyzing trace with hash 799150959, now seen corresponding path program 1 times [2023-11-19 08:07:17,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:07:17,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843813981] [2023-11-19 08:07:17,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:07:17,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:07:17,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:17,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:07:17,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:07:17,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843813981] [2023-11-19 08:07:17,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843813981] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:07:17,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:07:17,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 08:07:17,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476648807] [2023-11-19 08:07:17,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:07:17,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:07:17,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:07:17,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:07:17,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:07:17,274 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 301 [2023-11-19 08:07:17,275 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 69 transitions, 154 flow. Second operand has 3 states, 3 states have (on average 136.33333333333334) internal successors, (409), 3 states have internal predecessors, (409), 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) [2023-11-19 08:07:17,275 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:07:17,275 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 301 [2023-11-19 08:07:17,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:07:18,370 INFO L124 PetriNetUnfolderBase]: 5379/8576 cut-off events. [2023-11-19 08:07:18,370 INFO L125 PetriNetUnfolderBase]: For 77/77 co-relation queries the response was YES. [2023-11-19 08:07:18,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17058 conditions, 8576 events. 5379/8576 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 325. Compared 53871 event pairs, 2436 based on Foata normal form. 606/6412 useless extension candidates. Maximal degree in co-relation 1962. Up to 8388 conditions per place. [2023-11-19 08:07:18,442 INFO L140 encePairwiseOnDemand]: 281/301 looper letters, 61 selfloop transitions, 2 changer transitions 0/69 dead transitions. [2023-11-19 08:07:18,442 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 69 transitions, 280 flow [2023-11-19 08:07:18,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:07:18,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 08:07:18,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 492 transitions. [2023-11-19 08:07:18,446 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5448504983388704 [2023-11-19 08:07:18,447 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 492 transitions. [2023-11-19 08:07:18,447 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 492 transitions. [2023-11-19 08:07:18,447 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:07:18,448 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 492 transitions. [2023-11-19 08:07:18,450 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 164.0) internal successors, (492), 3 states have internal predecessors, (492), 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) [2023-11-19 08:07:18,455 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 301.0) internal successors, (1204), 4 states have internal predecessors, (1204), 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) [2023-11-19 08:07:18,456 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 301.0) internal successors, (1204), 4 states have internal predecessors, (1204), 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) [2023-11-19 08:07:18,456 INFO L175 Difference]: Start difference. First operand has 56 places, 69 transitions, 154 flow. Second operand 3 states and 492 transitions. [2023-11-19 08:07:18,457 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 69 transitions, 280 flow [2023-11-19 08:07:18,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 69 transitions, 280 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 08:07:18,461 INFO L231 Difference]: Finished difference. Result has 59 places, 55 transitions, 140 flow [2023-11-19 08:07:18,462 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=301, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=140, PETRI_PLACES=59, PETRI_TRANSITIONS=55} [2023-11-19 08:07:18,463 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 3 predicate places. [2023-11-19 08:07:18,463 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 55 transitions, 140 flow [2023-11-19 08:07:18,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 136.33333333333334) internal successors, (409), 3 states have internal predecessors, (409), 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) [2023-11-19 08:07:18,468 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:07:18,468 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:07:18,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 08:07:18,469 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-19 08:07:18,470 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:07:18,470 INFO L85 PathProgramCache]: Analyzing trace with hash -810398250, now seen corresponding path program 1 times [2023-11-19 08:07:18,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:07:18,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292177202] [2023-11-19 08:07:18,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:07:18,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:07:18,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:18,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:07:18,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:07:18,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292177202] [2023-11-19 08:07:18,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292177202] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:07:18,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:07:18,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 08:07:18,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113309724] [2023-11-19 08:07:18,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:07:18,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:07:18,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:07:18,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:07:18,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:07:18,577 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 301 [2023-11-19 08:07:18,578 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 55 transitions, 140 flow. Second operand has 3 states, 3 states have (on average 138.0) internal successors, (414), 3 states have internal predecessors, (414), 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) [2023-11-19 08:07:18,579 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:07:18,579 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 301 [2023-11-19 08:07:18,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:07:19,748 INFO L124 PetriNetUnfolderBase]: 5925/9900 cut-off events. [2023-11-19 08:07:19,748 INFO L125 PetriNetUnfolderBase]: For 521/521 co-relation queries the response was YES. [2023-11-19 08:07:19,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20542 conditions, 9900 events. 5925/9900 cut-off events. For 521/521 co-relation queries the response was YES. Maximal size of possible extension queue 388. Compared 67554 event pairs, 1920 based on Foata normal form. 0/7510 useless extension candidates. Maximal degree in co-relation 20454. Up to 7075 conditions per place. [2023-11-19 08:07:19,823 INFO L140 encePairwiseOnDemand]: 287/301 looper letters, 82 selfloop transitions, 6 changer transitions 0/94 dead transitions. [2023-11-19 08:07:19,823 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 94 transitions, 416 flow [2023-11-19 08:07:19,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:07:19,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 08:07:19,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 502 transitions. [2023-11-19 08:07:19,826 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5559246954595792 [2023-11-19 08:07:19,826 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 502 transitions. [2023-11-19 08:07:19,826 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 502 transitions. [2023-11-19 08:07:19,827 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:07:19,827 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 502 transitions. [2023-11-19 08:07:19,828 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 167.33333333333334) internal successors, (502), 3 states have internal predecessors, (502), 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) [2023-11-19 08:07:19,831 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 301.0) internal successors, (1204), 4 states have internal predecessors, (1204), 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) [2023-11-19 08:07:19,832 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 301.0) internal successors, (1204), 4 states have internal predecessors, (1204), 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) [2023-11-19 08:07:19,833 INFO L175 Difference]: Start difference. First operand has 59 places, 55 transitions, 140 flow. Second operand 3 states and 502 transitions. [2023-11-19 08:07:19,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 94 transitions, 416 flow [2023-11-19 08:07:19,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 94 transitions, 413 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 08:07:19,842 INFO L231 Difference]: Finished difference. Result has 62 places, 60 transitions, 198 flow [2023-11-19 08:07:19,842 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=301, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=198, PETRI_PLACES=62, PETRI_TRANSITIONS=60} [2023-11-19 08:07:19,845 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 6 predicate places. [2023-11-19 08:07:19,845 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 60 transitions, 198 flow [2023-11-19 08:07:19,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 138.0) internal successors, (414), 3 states have internal predecessors, (414), 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) [2023-11-19 08:07:19,846 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:07:19,846 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-11-19 08:07:19,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 08:07:19,847 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-19 08:07:19,847 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:07:19,847 INFO L85 PathProgramCache]: Analyzing trace with hash -1559647891, now seen corresponding path program 1 times [2023-11-19 08:07:19,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:07:19,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549275107] [2023-11-19 08:07:19,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:07:19,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:07:19,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:19,930 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 08:07:19,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:07:19,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549275107] [2023-11-19 08:07:19,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549275107] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:07:19,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:07:19,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 08:07:19,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357621547] [2023-11-19 08:07:19,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:07:19,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:07:19,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:07:19,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:07:19,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:07:19,947 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 301 [2023-11-19 08:07:19,947 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 60 transitions, 198 flow. Second operand has 3 states, 3 states have (on average 136.33333333333334) internal successors, (409), 3 states have internal predecessors, (409), 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) [2023-11-19 08:07:19,948 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:07:19,948 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 301 [2023-11-19 08:07:19,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:07:21,123 INFO L124 PetriNetUnfolderBase]: 5574/9300 cut-off events. [2023-11-19 08:07:21,124 INFO L125 PetriNetUnfolderBase]: For 2101/2101 co-relation queries the response was YES. [2023-11-19 08:07:21,139 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22058 conditions, 9300 events. 5574/9300 cut-off events. For 2101/2101 co-relation queries the response was YES. Maximal size of possible extension queue 385. Compared 63658 event pairs, 1773 based on Foata normal form. 0/7777 useless extension candidates. Maximal degree in co-relation 18150. Up to 7717 conditions per place. [2023-11-19 08:07:21,175 INFO L140 encePairwiseOnDemand]: 297/301 looper letters, 79 selfloop transitions, 4 changer transitions 0/89 dead transitions. [2023-11-19 08:07:21,175 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 89 transitions, 452 flow [2023-11-19 08:07:21,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:07:21,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 08:07:21,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 478 transitions. [2023-11-19 08:07:21,177 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5293466223698782 [2023-11-19 08:07:21,178 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 478 transitions. [2023-11-19 08:07:21,178 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 478 transitions. [2023-11-19 08:07:21,178 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:07:21,178 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 478 transitions. [2023-11-19 08:07:21,180 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 159.33333333333334) internal successors, (478), 3 states have internal predecessors, (478), 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) [2023-11-19 08:07:21,182 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 301.0) internal successors, (1204), 4 states have internal predecessors, (1204), 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) [2023-11-19 08:07:21,183 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 301.0) internal successors, (1204), 4 states have internal predecessors, (1204), 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) [2023-11-19 08:07:21,183 INFO L175 Difference]: Start difference. First operand has 62 places, 60 transitions, 198 flow. Second operand 3 states and 478 transitions. [2023-11-19 08:07:21,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 89 transitions, 452 flow [2023-11-19 08:07:21,193 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 89 transitions, 436 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 08:07:21,195 INFO L231 Difference]: Finished difference. Result has 62 places, 60 transitions, 198 flow [2023-11-19 08:07:21,195 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=301, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=198, PETRI_PLACES=62, PETRI_TRANSITIONS=60} [2023-11-19 08:07:21,196 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 6 predicate places. [2023-11-19 08:07:21,196 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 60 transitions, 198 flow [2023-11-19 08:07:21,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 136.33333333333334) internal successors, (409), 3 states have internal predecessors, (409), 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) [2023-11-19 08:07:21,197 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:07:21,197 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-11-19 08:07:21,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 08:07:21,197 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-19 08:07:21,197 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:07:21,198 INFO L85 PathProgramCache]: Analyzing trace with hash -1559647892, now seen corresponding path program 1 times [2023-11-19 08:07:21,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:07:21,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620184590] [2023-11-19 08:07:21,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:07:21,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:07:21,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:21,329 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:07:21,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:07:21,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620184590] [2023-11-19 08:07:21,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620184590] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:07:21,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:07:21,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 08:07:21,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130290311] [2023-11-19 08:07:21,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:07:21,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:07:21,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:07:21,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:07:21,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:07:21,345 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 301 [2023-11-19 08:07:21,345 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 60 transitions, 198 flow. Second operand has 3 states, 3 states have (on average 137.33333333333334) internal successors, (412), 3 states have internal predecessors, (412), 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) [2023-11-19 08:07:21,346 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:07:21,346 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 301 [2023-11-19 08:07:21,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:07:22,298 INFO L124 PetriNetUnfolderBase]: 5223/8765 cut-off events. [2023-11-19 08:07:22,298 INFO L125 PetriNetUnfolderBase]: For 2798/2798 co-relation queries the response was YES. [2023-11-19 08:07:22,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20712 conditions, 8765 events. 5223/8765 cut-off events. For 2798/2798 co-relation queries the response was YES. Maximal size of possible extension queue 358. Compared 59826 event pairs, 1784 based on Foata normal form. 190/7668 useless extension candidates. Maximal degree in co-relation 16954. Up to 7153 conditions per place. [2023-11-19 08:07:22,349 INFO L140 encePairwiseOnDemand]: 298/301 looper letters, 80 selfloop transitions, 2 changer transitions 0/88 dead transitions. [2023-11-19 08:07:22,349 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 88 transitions, 444 flow [2023-11-19 08:07:22,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:07:22,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 08:07:22,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 479 transitions. [2023-11-19 08:07:22,352 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.530454042081949 [2023-11-19 08:07:22,352 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 479 transitions. [2023-11-19 08:07:22,352 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 479 transitions. [2023-11-19 08:07:22,353 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:07:22,353 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 479 transitions. [2023-11-19 08:07:22,354 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 159.66666666666666) internal successors, (479), 3 states have internal predecessors, (479), 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) [2023-11-19 08:07:22,357 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 301.0) internal successors, (1204), 4 states have internal predecessors, (1204), 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) [2023-11-19 08:07:22,358 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 301.0) internal successors, (1204), 4 states have internal predecessors, (1204), 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) [2023-11-19 08:07:22,358 INFO L175 Difference]: Start difference. First operand has 62 places, 60 transitions, 198 flow. Second operand 3 states and 479 transitions. [2023-11-19 08:07:22,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 88 transitions, 444 flow [2023-11-19 08:07:22,360 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 88 transitions, 440 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 08:07:22,362 INFO L231 Difference]: Finished difference. Result has 62 places, 59 transitions, 194 flow [2023-11-19 08:07:22,363 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=301, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=194, PETRI_PLACES=62, PETRI_TRANSITIONS=59} [2023-11-19 08:07:22,363 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 6 predicate places. [2023-11-19 08:07:22,364 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 59 transitions, 194 flow [2023-11-19 08:07:22,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 137.33333333333334) internal successors, (412), 3 states have internal predecessors, (412), 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) [2023-11-19 08:07:22,364 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:07:22,365 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-11-19 08:07:22,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 08:07:22,365 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-19 08:07:22,365 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:07:22,366 INFO L85 PathProgramCache]: Analyzing trace with hash 122006595, now seen corresponding path program 1 times [2023-11-19 08:07:22,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:07:22,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307484962] [2023-11-19 08:07:22,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:07:22,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:07:22,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:07:22,381 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 08:07:22,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:07:22,402 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 08:07:22,402 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 08:07:22,402 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2023-11-19 08:07:22,403 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2023-11-19 08:07:22,403 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2023-11-19 08:07:22,404 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2023-11-19 08:07:22,405 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2023-11-19 08:07:22,405 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2023-11-19 08:07:22,405 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2023-11-19 08:07:22,407 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2023-11-19 08:07:22,408 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 17 remaining) [2023-11-19 08:07:22,409 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 17 remaining) [2023-11-19 08:07:22,409 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 17 remaining) [2023-11-19 08:07:22,409 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2023-11-19 08:07:22,409 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2023-11-19 08:07:22,409 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2023-11-19 08:07:22,410 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2023-11-19 08:07:22,410 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2023-11-19 08:07:22,410 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2023-11-19 08:07:22,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 08:07:22,411 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-11-19 08:07:22,412 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-19 08:07:22,412 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-19 08:07:22,466 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-19 08:07:22,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 181 places, 203 transitions, 433 flow [2023-11-19 08:07:22,554 INFO L124 PetriNetUnfolderBase]: 62/460 cut-off events. [2023-11-19 08:07:22,554 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-11-19 08:07:22,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 485 conditions, 460 events. 62/460 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1671 event pairs, 1 based on Foata normal form. 0/362 useless extension candidates. Maximal degree in co-relation 303. Up to 16 conditions per place. [2023-11-19 08:07:22,560 INFO L82 GeneralOperation]: Start removeDead. Operand has 181 places, 203 transitions, 433 flow [2023-11-19 08:07:22,565 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 181 places, 203 transitions, 433 flow [2023-11-19 08:07:22,565 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 08:07:22,565 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 181 places, 203 transitions, 433 flow [2023-11-19 08:07:22,566 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 181 places, 203 transitions, 433 flow [2023-11-19 08:07:22,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 181 places, 203 transitions, 433 flow [2023-11-19 08:07:22,644 INFO L124 PetriNetUnfolderBase]: 62/460 cut-off events. [2023-11-19 08:07:22,644 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-11-19 08:07:22,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 485 conditions, 460 events. 62/460 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1671 event pairs, 1 based on Foata normal form. 0/362 useless extension candidates. Maximal degree in co-relation 303. Up to 16 conditions per place. [2023-11-19 08:07:22,681 INFO L119 LiptonReduction]: Number of co-enabled transitions 22248 [2023-11-19 08:07:26,048 INFO L134 LiptonReduction]: Checked pairs total: 54009 [2023-11-19 08:07:26,049 INFO L136 LiptonReduction]: Total number of compositions: 161 [2023-11-19 08:07:26,052 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 08:07:26,058 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;@1778fa4b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 08:07:26,059 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2023-11-19 08:07:26,065 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 08:07:26,065 INFO L124 PetriNetUnfolderBase]: 4/17 cut-off events. [2023-11-19 08:07:26,065 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 08:07:26,066 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:07:26,066 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 08:07:26,066 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-19 08:07:26,067 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:07:26,068 INFO L85 PathProgramCache]: Analyzing trace with hash 1183736768, now seen corresponding path program 1 times [2023-11-19 08:07:26,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:07:26,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981137849] [2023-11-19 08:07:26,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:07:26,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:07:26,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:26,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:07:26,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:07:26,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981137849] [2023-11-19 08:07:26,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981137849] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:07:26,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:07:26,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 08:07:26,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342123956] [2023-11-19 08:07:26,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:07:26,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:07:26,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:07:26,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:07:26,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:07:26,133 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 364 [2023-11-19 08:07:26,134 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 92 transitions, 211 flow. Second operand has 3 states, 3 states have (on average 166.33333333333334) internal successors, (499), 3 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:07:26,134 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:07:26,134 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 364 [2023-11-19 08:07:26,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:07:37,798 INFO L124 PetriNetUnfolderBase]: 102458/145569 cut-off events. [2023-11-19 08:07:37,798 INFO L125 PetriNetUnfolderBase]: For 2273/2273 co-relation queries the response was YES. [2023-11-19 08:07:37,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 288119 conditions, 145569 events. 102458/145569 cut-off events. For 2273/2273 co-relation queries the response was YES. Maximal size of possible extension queue 4010. Compared 1092697 event pairs, 64766 based on Foata normal form. 15856/113029 useless extension candidates. Maximal degree in co-relation 24799. Up to 141113 conditions per place. [2023-11-19 08:07:38,892 INFO L140 encePairwiseOnDemand]: 338/364 looper letters, 74 selfloop transitions, 2 changer transitions 0/86 dead transitions. [2023-11-19 08:07:38,892 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 86 transitions, 351 flow [2023-11-19 08:07:38,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:07:38,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 08:07:38,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 601 transitions. [2023-11-19 08:07:38,897 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5503663003663004 [2023-11-19 08:07:38,897 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 601 transitions. [2023-11-19 08:07:38,897 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 601 transitions. [2023-11-19 08:07:38,898 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:07:38,898 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 601 transitions. [2023-11-19 08:07:38,900 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 200.33333333333334) internal successors, (601), 3 states have internal predecessors, (601), 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) [2023-11-19 08:07:38,903 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 364.0) internal successors, (1456), 4 states have internal predecessors, (1456), 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) [2023-11-19 08:07:38,904 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 364.0) internal successors, (1456), 4 states have internal predecessors, (1456), 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) [2023-11-19 08:07:38,904 INFO L175 Difference]: Start difference. First operand has 74 places, 92 transitions, 211 flow. Second operand 3 states and 601 transitions. [2023-11-19 08:07:38,904 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 86 transitions, 351 flow [2023-11-19 08:07:38,907 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 86 transitions, 351 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 08:07:38,909 INFO L231 Difference]: Finished difference. Result has 77 places, 72 transitions, 185 flow [2023-11-19 08:07:38,910 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=364, PETRI_DIFFERENCE_MINUEND_FLOW=169, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=185, PETRI_PLACES=77, PETRI_TRANSITIONS=72} [2023-11-19 08:07:38,911 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 3 predicate places. [2023-11-19 08:07:38,911 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 72 transitions, 185 flow [2023-11-19 08:07:38,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 166.33333333333334) internal successors, (499), 3 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:07:38,913 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:07:38,913 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:07:38,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-19 08:07:38,913 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-19 08:07:38,914 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:07:38,914 INFO L85 PathProgramCache]: Analyzing trace with hash -588840244, now seen corresponding path program 1 times [2023-11-19 08:07:38,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:07:38,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132266647] [2023-11-19 08:07:38,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:07:38,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:07:38,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:38,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:07:38,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:07:38,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132266647] [2023-11-19 08:07:38,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132266647] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:07:38,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:07:38,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 08:07:38,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479376232] [2023-11-19 08:07:38,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:07:38,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:07:38,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:07:38,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:07:38,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:07:38,977 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 364 [2023-11-19 08:07:38,978 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 72 transitions, 185 flow. Second operand has 3 states, 3 states have (on average 166.0) internal successors, (498), 3 states have internal predecessors, (498), 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) [2023-11-19 08:07:38,978 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:07:38,978 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 364 [2023-11-19 08:07:38,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:07:53,491 INFO L124 PetriNetUnfolderBase]: 132075/192157 cut-off events. [2023-11-19 08:07:53,491 INFO L125 PetriNetUnfolderBase]: For 8747/8747 co-relation queries the response was YES. [2023-11-19 08:07:53,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 394062 conditions, 192157 events. 132075/192157 cut-off events. For 8747/8747 co-relation queries the response was YES. Maximal size of possible extension queue 5753. Compared 1571374 event pairs, 54784 based on Foata normal form. 0/143299 useless extension candidates. Maximal degree in co-relation 393973. Up to 145687 conditions per place. [2023-11-19 08:07:54,496 INFO L140 encePairwiseOnDemand]: 344/364 looper letters, 104 selfloop transitions, 8 changer transitions 0/121 dead transitions. [2023-11-19 08:07:54,496 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 121 transitions, 539 flow [2023-11-19 08:07:54,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:07:54,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 08:07:54,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 614 transitions. [2023-11-19 08:07:54,501 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5622710622710623 [2023-11-19 08:07:54,501 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 614 transitions. [2023-11-19 08:07:54,502 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 614 transitions. [2023-11-19 08:07:54,502 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:07:54,502 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 614 transitions. [2023-11-19 08:07:54,504 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 204.66666666666666) internal successors, (614), 3 states have internal predecessors, (614), 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) [2023-11-19 08:07:54,507 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 364.0) internal successors, (1456), 4 states have internal predecessors, (1456), 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) [2023-11-19 08:07:54,507 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 364.0) internal successors, (1456), 4 states have internal predecessors, (1456), 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) [2023-11-19 08:07:54,508 INFO L175 Difference]: Start difference. First operand has 77 places, 72 transitions, 185 flow. Second operand 3 states and 614 transitions. [2023-11-19 08:07:54,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 121 transitions, 539 flow [2023-11-19 08:07:54,533 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 121 transitions, 536 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 08:07:54,537 INFO L231 Difference]: Finished difference. Result has 80 places, 79 transitions, 267 flow [2023-11-19 08:07:54,538 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=364, PETRI_DIFFERENCE_MINUEND_FLOW=183, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=267, PETRI_PLACES=80, PETRI_TRANSITIONS=79} [2023-11-19 08:07:54,539 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 6 predicate places. [2023-11-19 08:07:54,539 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 79 transitions, 267 flow [2023-11-19 08:07:54,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 166.0) internal successors, (498), 3 states have internal predecessors, (498), 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) [2023-11-19 08:07:54,540 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:07:54,540 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-11-19 08:07:54,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-19 08:07:54,541 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-19 08:07:54,541 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:07:54,544 INFO L85 PathProgramCache]: Analyzing trace with hash -791329150, now seen corresponding path program 1 times [2023-11-19 08:07:54,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:07:54,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136969258] [2023-11-19 08:07:54,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:07:54,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:07:54,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:54,854 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 08:07:54,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:07:54,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136969258] [2023-11-19 08:07:54,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136969258] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:07:54,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:07:54,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 08:07:54,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876635858] [2023-11-19 08:07:54,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:07:54,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:07:54,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:07:54,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:07:54,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:07:54,873 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 364 [2023-11-19 08:07:54,874 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 79 transitions, 267 flow. Second operand has 3 states, 3 states have (on average 166.33333333333334) internal successors, (499), 3 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:07:54,874 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:07:54,875 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 364 [2023-11-19 08:07:54,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand