./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_02-simple_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d03c335-7f39-4d5d-a3e1-615401335695/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d03c335-7f39-4d5d-a3e1-615401335695/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_7d03c335-7f39-4d5d-a3e1-615401335695/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d03c335-7f39-4d5d-a3e1-615401335695/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_02-simple_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d03c335-7f39-4d5d-a3e1-615401335695/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_7d03c335-7f39-4d5d-a3e1-615401335695/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 b3e7d0a2f10d1449a9a354d4032bafdd0ae7a7fd76aceb835acbee3134ec74e4 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:35:05,227 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:35:05,359 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d03c335-7f39-4d5d-a3e1-615401335695/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-19 07:35:05,364 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:35:05,364 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:35:05,409 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:35:05,410 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:35:05,412 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:35:05,413 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:35:05,418 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:35:05,419 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:35:05,420 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:35:05,420 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:35:05,422 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:35:05,423 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:35:05,423 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:35:05,424 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:35:05,424 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:35:05,425 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:35:05,425 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:35:05,426 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:35:05,426 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:35:05,427 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 07:35:05,427 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:35:05,428 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:35:05,428 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:35:05,429 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:35:05,429 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:35:05,430 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:35:05,430 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:35:05,432 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:35:05,432 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:35:05,432 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:35:05,433 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:35:05,433 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:35:05,433 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:35:05,434 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:35:05,434 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:35:05,434 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:35:05,434 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:35:05,435 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:35:05,435 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_7d03c335-7f39-4d5d-a3e1-615401335695/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d03c335-7f39-4d5d-a3e1-615401335695/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b3e7d0a2f10d1449a9a354d4032bafdd0ae7a7fd76aceb835acbee3134ec74e4 [2023-11-19 07:35:05,739 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:35:05,777 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:35:05,780 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:35:05,781 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:35:05,782 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:35:05,783 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d03c335-7f39-4d5d-a3e1-615401335695/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/goblint-regression/28-race_reach_02-simple_racefree.i [2023-11-19 07:35:08,937 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:35:09,206 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:35:09,207 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d03c335-7f39-4d5d-a3e1-615401335695/sv-benchmarks/c/goblint-regression/28-race_reach_02-simple_racefree.i [2023-11-19 07:35:09,230 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d03c335-7f39-4d5d-a3e1-615401335695/bin/uautomizer-verify-uCwYo4JHxu/data/d7a2e03af/14ea527164154a28a6ce0df5d814f2e6/FLAGb1f060774 [2023-11-19 07:35:09,246 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d03c335-7f39-4d5d-a3e1-615401335695/bin/uautomizer-verify-uCwYo4JHxu/data/d7a2e03af/14ea527164154a28a6ce0df5d814f2e6 [2023-11-19 07:35:09,250 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:35:09,251 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:35:09,253 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:35:09,253 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:35:09,260 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:35:09,261 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:35:09" (1/1) ... [2023-11-19 07:35:09,262 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@628cf93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:09, skipping insertion in model container [2023-11-19 07:35:09,262 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:35:09" (1/1) ... [2023-11-19 07:35:09,313 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:35:09,828 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:35:09,848 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:35:09,936 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:35:09,998 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:35:09,999 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:09 WrapperNode [2023-11-19 07:35:09,999 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:35:10,001 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:35:10,001 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:35:10,001 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:35:10,011 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:09" (1/1) ... [2023-11-19 07:35:10,051 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:09" (1/1) ... [2023-11-19 07:35:10,092 INFO L138 Inliner]: procedures = 170, calls = 31, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 88 [2023-11-19 07:35:10,092 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:35:10,093 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:35:10,094 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:35:10,094 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:35:10,106 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:09" (1/1) ... [2023-11-19 07:35:10,106 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:09" (1/1) ... [2023-11-19 07:35:10,121 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:09" (1/1) ... [2023-11-19 07:35:10,130 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:09" (1/1) ... [2023-11-19 07:35:10,147 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:09" (1/1) ... [2023-11-19 07:35:10,164 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:09" (1/1) ... [2023-11-19 07:35:10,167 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:09" (1/1) ... [2023-11-19 07:35:10,168 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:09" (1/1) ... [2023-11-19 07:35:10,172 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:35:10,173 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:35:10,180 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:35:10,181 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:35:10,182 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:09" (1/1) ... [2023-11-19 07:35:10,188 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:35:10,201 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d03c335-7f39-4d5d-a3e1-615401335695/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:35:10,219 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d03c335-7f39-4d5d-a3e1-615401335695/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:35:10,239 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d03c335-7f39-4d5d-a3e1-615401335695/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:35:10,274 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 07:35:10,275 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:35:10,275 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-19 07:35:10,275 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:35:10,275 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:35:10,276 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-19 07:35:10,276 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-19 07:35:10,276 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:35:10,277 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:35:10,277 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:35:10,277 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:35:10,279 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 07:35:10,444 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:35:10,447 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:35:10,725 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:35:10,737 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:35:10,738 INFO L302 CfgBuilder]: Removed 10 assume(true) statements. [2023-11-19 07:35:10,743 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:35:10 BoogieIcfgContainer [2023-11-19 07:35:10,744 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:35:10,747 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:35:10,748 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:35:10,752 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:35:10,752 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:35:09" (1/3) ... [2023-11-19 07:35:10,753 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32b26d43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:35:10, skipping insertion in model container [2023-11-19 07:35:10,753 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:09" (2/3) ... [2023-11-19 07:35:10,754 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32b26d43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:35:10, skipping insertion in model container [2023-11-19 07:35:10,754 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:35:10" (3/3) ... [2023-11-19 07:35:10,756 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_02-simple_racefree.i [2023-11-19 07:35:10,767 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 07:35:10,799 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:35:10,799 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-11-19 07:35:10,800 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 07:35:10,893 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-11-19 07:35:10,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 123 places, 133 transitions, 273 flow [2023-11-19 07:35:11,028 INFO L124 PetriNetUnfolderBase]: 19/175 cut-off events. [2023-11-19 07:35:11,029 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-19 07:35:11,038 INFO L83 FinitePrefix]: Finished finitePrefix Result has 180 conditions, 175 events. 19/175 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 437 event pairs, 0 based on Foata normal form. 0/145 useless extension candidates. Maximal degree in co-relation 87. Up to 4 conditions per place. [2023-11-19 07:35:11,038 INFO L82 GeneralOperation]: Start removeDead. Operand has 123 places, 133 transitions, 273 flow [2023-11-19 07:35:11,045 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 121 places, 130 transitions, 267 flow [2023-11-19 07:35:11,050 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:35:11,062 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 121 places, 130 transitions, 267 flow [2023-11-19 07:35:11,065 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 121 places, 130 transitions, 267 flow [2023-11-19 07:35:11,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 121 places, 130 transitions, 267 flow [2023-11-19 07:35:11,120 INFO L124 PetriNetUnfolderBase]: 18/172 cut-off events. [2023-11-19 07:35:11,120 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-19 07:35:11,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 177 conditions, 172 events. 18/172 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 432 event pairs, 0 based on Foata normal form. 0/143 useless extension candidates. Maximal degree in co-relation 87. Up to 4 conditions per place. [2023-11-19 07:35:11,128 INFO L119 LiptonReduction]: Number of co-enabled transitions 3744 [2023-11-19 07:35:15,256 INFO L134 LiptonReduction]: Checked pairs total: 5784 [2023-11-19 07:35:15,257 INFO L136 LiptonReduction]: Total number of compositions: 124 [2023-11-19 07:35:15,282 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:35:15,293 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;@3759d2f2, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:35:15,293 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2023-11-19 07:35:15,298 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:35:15,299 INFO L124 PetriNetUnfolderBase]: 3/14 cut-off events. [2023-11-19 07:35:15,299 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:35:15,299 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:35:15,300 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-19 07:35:15,300 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 07:35:15,308 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:35:15,308 INFO L85 PathProgramCache]: Analyzing trace with hash 15778705, now seen corresponding path program 1 times [2023-11-19 07:35:15,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:35:15,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279145941] [2023-11-19 07:35:15,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:35:15,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:35:15,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:35:15,659 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 07:35:15,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:35:15,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279145941] [2023-11-19 07:35:15,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279145941] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:35:15,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:35:15,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:35:15,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521462310] [2023-11-19 07:35:15,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:35:15,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:35:15,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:35:15,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:35:15,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:35:15,730 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 257 [2023-11-19 07:35:15,733 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 39 transitions, 85 flow. Second operand has 3 states, 3 states have (on average 113.33333333333333) internal successors, (340), 3 states have internal predecessors, (340), 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 07:35:15,734 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:35:15,734 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 257 [2023-11-19 07:35:15,735 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:35:15,876 INFO L124 PetriNetUnfolderBase]: 84/220 cut-off events. [2023-11-19 07:35:15,876 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-19 07:35:15,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 419 conditions, 220 events. 84/220 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1019 event pairs, 0 based on Foata normal form. 8/182 useless extension candidates. Maximal degree in co-relation 388. Up to 179 conditions per place. [2023-11-19 07:35:15,880 INFO L140 encePairwiseOnDemand]: 242/257 looper letters, 35 selfloop transitions, 2 changer transitions 0/40 dead transitions. [2023-11-19 07:35:15,880 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 40 transitions, 161 flow [2023-11-19 07:35:15,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:35:15,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:35:15,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 392 transitions. [2023-11-19 07:35:15,898 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5084306095979247 [2023-11-19 07:35:15,899 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 392 transitions. [2023-11-19 07:35:15,899 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 392 transitions. [2023-11-19 07:35:15,902 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:35:15,904 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 392 transitions. [2023-11-19 07:35:15,908 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 130.66666666666666) internal successors, (392), 3 states have internal predecessors, (392), 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 07:35:15,914 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 257.0) internal successors, (1028), 4 states have internal predecessors, (1028), 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 07:35:15,915 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 257.0) internal successors, (1028), 4 states have internal predecessors, (1028), 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 07:35:15,917 INFO L175 Difference]: Start difference. First operand has 33 places, 39 transitions, 85 flow. Second operand 3 states and 392 transitions. [2023-11-19 07:35:15,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 40 transitions, 161 flow [2023-11-19 07:35:15,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 40 transitions, 161 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:35:15,924 INFO L231 Difference]: Finished difference. Result has 33 places, 27 transitions, 69 flow [2023-11-19 07:35:15,926 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=257, PETRI_DIFFERENCE_MINUEND_FLOW=61, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=69, PETRI_PLACES=33, PETRI_TRANSITIONS=27} [2023-11-19 07:35:15,930 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 0 predicate places. [2023-11-19 07:35:15,930 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 27 transitions, 69 flow [2023-11-19 07:35:15,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 113.33333333333333) internal successors, (340), 3 states have internal predecessors, (340), 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 07:35:15,931 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:35:15,931 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-19 07:35:15,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:35:15,932 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-19 07:35:15,933 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:35:15,933 INFO L85 PathProgramCache]: Analyzing trace with hash -2016517355, now seen corresponding path program 1 times [2023-11-19 07:35:15,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:35:15,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781433362] [2023-11-19 07:35:15,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:35:15,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:35:15,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:35:16,062 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 07:35:16,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:35:16,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781433362] [2023-11-19 07:35:16,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781433362] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:35:16,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:35:16,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:35:16,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107947836] [2023-11-19 07:35:16,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:35:16,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:35:16,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:35:16,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:35:16,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:35:16,087 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 257 [2023-11-19 07:35:16,088 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 27 transitions, 69 flow. Second operand has 3 states, 3 states have (on average 116.66666666666667) internal successors, (350), 3 states have internal predecessors, (350), 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 07:35:16,088 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:35:16,088 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 257 [2023-11-19 07:35:16,088 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:35:16,180 INFO L124 PetriNetUnfolderBase]: 77/212 cut-off events. [2023-11-19 07:35:16,181 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2023-11-19 07:35:16,182 INFO L83 FinitePrefix]: Finished finitePrefix Result has 452 conditions, 212 events. 77/212 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 881 event pairs, 14 based on Foata normal form. 0/193 useless extension candidates. Maximal degree in co-relation 421. Up to 119 conditions per place. [2023-11-19 07:35:16,183 INFO L140 encePairwiseOnDemand]: 249/257 looper letters, 33 selfloop transitions, 4 changer transitions 0/40 dead transitions. [2023-11-19 07:35:16,184 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 40 transitions, 177 flow [2023-11-19 07:35:16,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:35:16,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:35:16,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 386 transitions. [2023-11-19 07:35:16,187 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5006485084306096 [2023-11-19 07:35:16,187 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 386 transitions. [2023-11-19 07:35:16,188 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 386 transitions. [2023-11-19 07:35:16,188 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:35:16,188 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 386 transitions. [2023-11-19 07:35:16,190 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 128.66666666666666) internal successors, (386), 3 states have internal predecessors, (386), 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 07:35:16,193 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 257.0) internal successors, (1028), 4 states have internal predecessors, (1028), 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 07:35:16,194 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 257.0) internal successors, (1028), 4 states have internal predecessors, (1028), 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 07:35:16,194 INFO L175 Difference]: Start difference. First operand has 33 places, 27 transitions, 69 flow. Second operand 3 states and 386 transitions. [2023-11-19 07:35:16,194 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 40 transitions, 177 flow [2023-11-19 07:35:16,196 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 40 transitions, 171 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:35:16,197 INFO L231 Difference]: Finished difference. Result has 33 places, 27 transitions, 89 flow [2023-11-19 07:35:16,198 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=257, PETRI_DIFFERENCE_MINUEND_FLOW=61, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=89, PETRI_PLACES=33, PETRI_TRANSITIONS=27} [2023-11-19 07:35:16,198 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 0 predicate places. [2023-11-19 07:35:16,199 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 27 transitions, 89 flow [2023-11-19 07:35:16,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 116.66666666666667) internal successors, (350), 3 states have internal predecessors, (350), 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 07:35:16,200 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:35:16,200 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-11-19 07:35:16,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:35:16,200 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-19 07:35:16,201 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:35:16,201 INFO L85 PathProgramCache]: Analyzing trace with hash -2016493672, now seen corresponding path program 1 times [2023-11-19 07:35:16,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:35:16,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617120057] [2023-11-19 07:35:16,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:35:16,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:35:16,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:35:16,236 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:35:16,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:35:16,271 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:35:16,271 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 07:35:16,273 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2023-11-19 07:35:16,275 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2023-11-19 07:35:16,275 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2023-11-19 07:35:16,276 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2023-11-19 07:35:16,276 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 13 remaining) [2023-11-19 07:35:16,276 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 13 remaining) [2023-11-19 07:35:16,277 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 13 remaining) [2023-11-19 07:35:16,277 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 13 remaining) [2023-11-19 07:35:16,277 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 13 remaining) [2023-11-19 07:35:16,277 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 13 remaining) [2023-11-19 07:35:16,278 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2023-11-19 07:35:16,278 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2023-11-19 07:35:16,278 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2023-11-19 07:35:16,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 07:35:16,279 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-11-19 07:35:16,282 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-19 07:35:16,282 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-19 07:35:16,309 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-19 07:35:16,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 156 places, 171 transitions, 358 flow [2023-11-19 07:35:16,360 INFO L124 PetriNetUnfolderBase]: 34/293 cut-off events. [2023-11-19 07:35:16,360 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-19 07:35:16,364 INFO L83 FinitePrefix]: Finished finitePrefix Result has 305 conditions, 293 events. 34/293 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 891 event pairs, 0 based on Foata normal form. 0/237 useless extension candidates. Maximal degree in co-relation 177. Up to 8 conditions per place. [2023-11-19 07:35:16,365 INFO L82 GeneralOperation]: Start removeDead. Operand has 156 places, 171 transitions, 358 flow [2023-11-19 07:35:16,369 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 156 places, 171 transitions, 358 flow [2023-11-19 07:35:16,369 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:35:16,369 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 156 places, 171 transitions, 358 flow [2023-11-19 07:35:16,370 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 156 places, 171 transitions, 358 flow [2023-11-19 07:35:16,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 156 places, 171 transitions, 358 flow [2023-11-19 07:35:16,414 INFO L124 PetriNetUnfolderBase]: 34/293 cut-off events. [2023-11-19 07:35:16,414 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-19 07:35:16,417 INFO L83 FinitePrefix]: Finished finitePrefix Result has 305 conditions, 293 events. 34/293 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 891 event pairs, 0 based on Foata normal form. 0/237 useless extension candidates. Maximal degree in co-relation 177. Up to 8 conditions per place. [2023-11-19 07:35:16,429 INFO L119 LiptonReduction]: Number of co-enabled transitions 11448 [2023-11-19 07:35:20,505 INFO L134 LiptonReduction]: Checked pairs total: 28761 [2023-11-19 07:35:20,505 INFO L136 LiptonReduction]: Total number of compositions: 145 [2023-11-19 07:35:20,507 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:35:20,509 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;@3759d2f2, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:35:20,509 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2023-11-19 07:35:20,512 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:35:20,513 INFO L124 PetriNetUnfolderBase]: 3/15 cut-off events. [2023-11-19 07:35:20,513 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:35:20,513 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:35:20,513 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 07:35:20,514 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 07:35:20,514 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:35:20,514 INFO L85 PathProgramCache]: Analyzing trace with hash 827232747, now seen corresponding path program 1 times [2023-11-19 07:35:20,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:35:20,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796110365] [2023-11-19 07:35:20,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:35:20,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:35:20,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:35:20,609 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 07:35:20,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:35:20,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796110365] [2023-11-19 07:35:20,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796110365] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:35:20,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:35:20,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:35:20,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185078404] [2023-11-19 07:35:20,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:35:20,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:35:20,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:35:20,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:35:20,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:35:20,626 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 316 [2023-11-19 07:35:20,627 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 67 transitions, 150 flow. Second operand has 3 states, 3 states have (on average 143.33333333333334) internal successors, (430), 3 states have internal predecessors, (430), 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 07:35:20,627 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:35:20,627 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 316 [2023-11-19 07:35:20,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:35:21,650 INFO L124 PetriNetUnfolderBase]: 4435/7387 cut-off events. [2023-11-19 07:35:21,650 INFO L125 PetriNetUnfolderBase]: For 74/74 co-relation queries the response was YES. [2023-11-19 07:35:21,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14526 conditions, 7387 events. 4435/7387 cut-off events. For 74/74 co-relation queries the response was YES. Maximal size of possible extension queue 330. Compared 49234 event pairs, 2080 based on Foata normal form. 710/5777 useless extension candidates. Maximal degree in co-relation 1678. Up to 7046 conditions per place. [2023-11-19 07:35:21,715 INFO L140 encePairwiseOnDemand]: 296/316 looper letters, 58 selfloop transitions, 2 changer transitions 0/67 dead transitions. [2023-11-19 07:35:21,716 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 67 transitions, 270 flow [2023-11-19 07:35:21,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:35:21,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:35:21,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 510 transitions. [2023-11-19 07:35:21,719 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5379746835443038 [2023-11-19 07:35:21,719 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 510 transitions. [2023-11-19 07:35:21,719 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 510 transitions. [2023-11-19 07:35:21,720 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:35:21,721 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 510 transitions. [2023-11-19 07:35:21,723 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 170.0) internal successors, (510), 3 states have internal predecessors, (510), 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 07:35:21,726 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 316.0) internal successors, (1264), 4 states have internal predecessors, (1264), 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 07:35:21,727 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 316.0) internal successors, (1264), 4 states have internal predecessors, (1264), 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 07:35:21,728 INFO L175 Difference]: Start difference. First operand has 55 places, 67 transitions, 150 flow. Second operand 3 states and 510 transitions. [2023-11-19 07:35:21,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 67 transitions, 270 flow [2023-11-19 07:35:21,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 67 transitions, 270 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:35:21,733 INFO L231 Difference]: Finished difference. Result has 58 places, 53 transitions, 136 flow [2023-11-19 07:35:21,734 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=316, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=136, PETRI_PLACES=58, PETRI_TRANSITIONS=53} [2023-11-19 07:35:21,738 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 3 predicate places. [2023-11-19 07:35:21,739 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 53 transitions, 136 flow [2023-11-19 07:35:21,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 143.33333333333334) internal successors, (430), 3 states have internal predecessors, (430), 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 07:35:21,739 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:35:21,740 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:35:21,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 07:35:21,740 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 07:35:21,741 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:35:21,741 INFO L85 PathProgramCache]: Analyzing trace with hash 408285617, now seen corresponding path program 1 times [2023-11-19 07:35:21,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:35:21,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125949465] [2023-11-19 07:35:21,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:35:21,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:35:21,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:35:21,854 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 07:35:21,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:35:21,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125949465] [2023-11-19 07:35:21,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125949465] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:35:21,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:35:21,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:35:21,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412645253] [2023-11-19 07:35:21,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:35:21,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:35:21,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:35:21,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:35:21,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:35:21,887 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 316 [2023-11-19 07:35:21,888 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 53 transitions, 136 flow. Second operand has 3 states, 3 states have (on average 144.66666666666666) internal successors, (434), 3 states have internal predecessors, (434), 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 07:35:21,888 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:35:21,889 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 316 [2023-11-19 07:35:21,889 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:35:23,093 INFO L124 PetriNetUnfolderBase]: 5030/8684 cut-off events. [2023-11-19 07:35:23,094 INFO L125 PetriNetUnfolderBase]: For 493/493 co-relation queries the response was YES. [2023-11-19 07:35:23,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17985 conditions, 8684 events. 5030/8684 cut-off events. For 493/493 co-relation queries the response was YES. Maximal size of possible extension queue 389. Compared 61172 event pairs, 1676 based on Foata normal form. 0/6662 useless extension candidates. Maximal degree in co-relation 17897. Up to 6101 conditions per place. [2023-11-19 07:35:23,189 INFO L140 encePairwiseOnDemand]: 302/316 looper letters, 76 selfloop transitions, 6 changer transitions 0/89 dead transitions. [2023-11-19 07:35:23,189 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 89 transitions, 394 flow [2023-11-19 07:35:23,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:35:23,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:35:23,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 517 transitions. [2023-11-19 07:35:23,193 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5453586497890295 [2023-11-19 07:35:23,193 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 517 transitions. [2023-11-19 07:35:23,194 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 517 transitions. [2023-11-19 07:35:23,195 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:35:23,195 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 517 transitions. [2023-11-19 07:35:23,198 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 172.33333333333334) internal successors, (517), 3 states have internal predecessors, (517), 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 07:35:23,201 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 316.0) internal successors, (1264), 4 states have internal predecessors, (1264), 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 07:35:23,203 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 316.0) internal successors, (1264), 4 states have internal predecessors, (1264), 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 07:35:23,203 INFO L175 Difference]: Start difference. First operand has 58 places, 53 transitions, 136 flow. Second operand 3 states and 517 transitions. [2023-11-19 07:35:23,203 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 89 transitions, 394 flow [2023-11-19 07:35:23,208 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 89 transitions, 391 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:35:23,211 INFO L231 Difference]: Finished difference. Result has 61 places, 58 transitions, 194 flow [2023-11-19 07:35:23,211 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=316, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=194, PETRI_PLACES=61, PETRI_TRANSITIONS=58} [2023-11-19 07:35:23,213 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 6 predicate places. [2023-11-19 07:35:23,214 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 58 transitions, 194 flow [2023-11-19 07:35:23,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 144.66666666666666) internal successors, (434), 3 states have internal predecessors, (434), 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 07:35:23,216 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:35:23,216 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-11-19 07:35:23,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 07:35:23,217 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-19 07:35:23,217 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:35:23,218 INFO L85 PathProgramCache]: Analyzing trace with hash -426857888, now seen corresponding path program 1 times [2023-11-19 07:35:23,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:35:23,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382352644] [2023-11-19 07:35:23,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:35:23,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:35:23,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:35:23,347 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:35:23,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:35:23,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382352644] [2023-11-19 07:35:23,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382352644] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:35:23,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1388712068] [2023-11-19 07:35:23,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:35:23,350 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:35:23,350 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d03c335-7f39-4d5d-a3e1-615401335695/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:35:23,358 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d03c335-7f39-4d5d-a3e1-615401335695/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:35:23,364 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d03c335-7f39-4d5d-a3e1-615401335695/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 07:35:23,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:35:23,470 INFO L262 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:35:23,472 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:35:23,533 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 07:35:23,534 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:35:23,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1388712068] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:35:23,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:35:23,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-11-19 07:35:23,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56748060] [2023-11-19 07:35:23,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:35:23,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:35:23,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:35:23,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:35:23,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:35:23,557 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 316 [2023-11-19 07:35:23,558 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 58 transitions, 194 flow. Second operand has 4 states, 4 states have (on average 143.75) internal successors, (575), 4 states have internal predecessors, (575), 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 07:35:23,559 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:35:23,559 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 316 [2023-11-19 07:35:23,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:35:24,654 INFO L124 PetriNetUnfolderBase]: 4702/8183 cut-off events. [2023-11-19 07:35:24,655 INFO L125 PetriNetUnfolderBase]: For 2024/2024 co-relation queries the response was YES. [2023-11-19 07:35:24,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19404 conditions, 8183 events. 4702/8183 cut-off events. For 2024/2024 co-relation queries the response was YES. Maximal size of possible extension queue 373. Compared 58241 event pairs, 1434 based on Foata normal form. 0/6960 useless extension candidates. Maximal degree in co-relation 5283. Up to 6025 conditions per place. [2023-11-19 07:35:24,714 INFO L140 encePairwiseOnDemand]: 312/316 looper letters, 87 selfloop transitions, 3 changer transitions 0/97 dead transitions. [2023-11-19 07:35:24,715 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 97 transitions, 492 flow [2023-11-19 07:35:24,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:35:24,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 07:35:24,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 652 transitions. [2023-11-19 07:35:24,718 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5158227848101266 [2023-11-19 07:35:24,719 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 652 transitions. [2023-11-19 07:35:24,719 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 652 transitions. [2023-11-19 07:35:24,720 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:35:24,720 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 652 transitions. [2023-11-19 07:35:24,722 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 163.0) internal successors, (652), 4 states have internal predecessors, (652), 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 07:35:24,726 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 316.0) internal successors, (1580), 5 states have internal predecessors, (1580), 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 07:35:24,727 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 316.0) internal successors, (1580), 5 states have internal predecessors, (1580), 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 07:35:24,727 INFO L175 Difference]: Start difference. First operand has 61 places, 58 transitions, 194 flow. Second operand 4 states and 652 transitions. [2023-11-19 07:35:24,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 97 transitions, 492 flow [2023-11-19 07:35:24,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 97 transitions, 474 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:35:24,753 INFO L231 Difference]: Finished difference. Result has 61 places, 57 transitions, 184 flow [2023-11-19 07:35:24,754 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=316, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=184, PETRI_PLACES=61, PETRI_TRANSITIONS=57} [2023-11-19 07:35:24,757 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 6 predicate places. [2023-11-19 07:35:24,757 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 57 transitions, 184 flow [2023-11-19 07:35:24,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 143.75) internal successors, (575), 4 states have internal predecessors, (575), 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 07:35:24,758 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:35:24,759 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-11-19 07:35:24,787 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d03c335-7f39-4d5d-a3e1-615401335695/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-19 07:35:24,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d03c335-7f39-4d5d-a3e1-615401335695/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:35:24,974 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-19 07:35:24,975 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:35:24,975 INFO L85 PathProgramCache]: Analyzing trace with hash -426857858, now seen corresponding path program 1 times [2023-11-19 07:35:24,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:35:24,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123604417] [2023-11-19 07:35:24,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:35:24,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:35:24,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:35:25,021 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 07:35:25,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:35:25,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123604417] [2023-11-19 07:35:25,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123604417] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:35:25,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:35:25,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:35:25,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772437056] [2023-11-19 07:35:25,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:35:25,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:35:25,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:35:25,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:35:25,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:35:25,039 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 316 [2023-11-19 07:35:25,040 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 57 transitions, 184 flow. Second operand has 3 states, 3 states have (on average 143.33333333333334) internal successors, (430), 3 states have internal predecessors, (430), 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 07:35:25,041 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:35:25,041 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 316 [2023-11-19 07:35:25,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:35:26,056 INFO L124 PetriNetUnfolderBase]: 4374/7597 cut-off events. [2023-11-19 07:35:26,057 INFO L125 PetriNetUnfolderBase]: For 1216/1216 co-relation queries the response was YES. [2023-11-19 07:35:26,075 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17684 conditions, 7597 events. 4374/7597 cut-off events. For 1216/1216 co-relation queries the response was YES. Maximal size of possible extension queue 347. Compared 52610 event pairs, 1526 based on Foata normal form. 0/6594 useless extension candidates. Maximal degree in co-relation 10248. Up to 6554 conditions per place. [2023-11-19 07:35:26,110 INFO L140 encePairwiseOnDemand]: 312/316 looper letters, 74 selfloop transitions, 4 changer transitions 0/85 dead transitions. [2023-11-19 07:35:26,110 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 85 transitions, 422 flow [2023-11-19 07:35:26,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:35:26,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:35:26,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 494 transitions. [2023-11-19 07:35:26,113 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5210970464135021 [2023-11-19 07:35:26,114 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 494 transitions. [2023-11-19 07:35:26,115 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 494 transitions. [2023-11-19 07:35:26,115 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:35:26,115 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 494 transitions. [2023-11-19 07:35:26,117 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 164.66666666666666) internal successors, (494), 3 states have internal predecessors, (494), 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 07:35:26,120 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 316.0) internal successors, (1264), 4 states have internal predecessors, (1264), 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 07:35:26,122 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 316.0) internal successors, (1264), 4 states have internal predecessors, (1264), 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 07:35:26,122 INFO L175 Difference]: Start difference. First operand has 61 places, 57 transitions, 184 flow. Second operand 3 states and 494 transitions. [2023-11-19 07:35:26,123 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 85 transitions, 422 flow [2023-11-19 07:35:26,125 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 85 transitions, 418 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:35:26,128 INFO L231 Difference]: Finished difference. Result has 61 places, 57 transitions, 192 flow [2023-11-19 07:35:26,128 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=316, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=192, PETRI_PLACES=61, PETRI_TRANSITIONS=57} [2023-11-19 07:35:26,131 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 6 predicate places. [2023-11-19 07:35:26,131 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 57 transitions, 192 flow [2023-11-19 07:35:26,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 143.33333333333334) internal successors, (430), 3 states have internal predecessors, (430), 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 07:35:26,132 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:35:26,132 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:35:26,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 07:35:26,132 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-19 07:35:26,133 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:35:26,133 INFO L85 PathProgramCache]: Analyzing trace with hash 832425561, now seen corresponding path program 1 times [2023-11-19 07:35:26,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:35:26,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329719997] [2023-11-19 07:35:26,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:35:26,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:35:26,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:35:26,240 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 07:35:26,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:35:26,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329719997] [2023-11-19 07:35:26,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329719997] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:35:26,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:35:26,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:35:26,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854302732] [2023-11-19 07:35:26,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:35:26,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:35:26,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:35:26,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:35:26,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:35:26,285 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 316 [2023-11-19 07:35:26,286 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 57 transitions, 192 flow. Second operand has 5 states, 5 states have (on average 140.8) internal successors, (704), 5 states have internal predecessors, (704), 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 07:35:26,287 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:35:26,287 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 316 [2023-11-19 07:35:26,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:35:27,583 INFO L124 PetriNetUnfolderBase]: 4969/8659 cut-off events. [2023-11-19 07:35:27,583 INFO L125 PetriNetUnfolderBase]: For 3356/3356 co-relation queries the response was YES. [2023-11-19 07:35:27,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20601 conditions, 8659 events. 4969/8659 cut-off events. For 3356/3356 co-relation queries the response was YES. Maximal size of possible extension queue 398. Compared 61234 event pairs, 722 based on Foata normal form. 91/7812 useless extension candidates. Maximal degree in co-relation 18198. Up to 3731 conditions per place. [2023-11-19 07:35:27,650 INFO L140 encePairwiseOnDemand]: 300/316 looper letters, 165 selfloop transitions, 26 changer transitions 0/198 dead transitions. [2023-11-19 07:35:27,650 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 198 transitions, 1020 flow [2023-11-19 07:35:27,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:35:27,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-19 07:35:27,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1166 transitions. [2023-11-19 07:35:27,657 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.527124773960217 [2023-11-19 07:35:27,657 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1166 transitions. [2023-11-19 07:35:27,657 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1166 transitions. [2023-11-19 07:35:27,658 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:35:27,659 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1166 transitions. [2023-11-19 07:35:27,663 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 166.57142857142858) internal successors, (1166), 7 states have internal predecessors, (1166), 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 07:35:27,668 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 316.0) internal successors, (2528), 8 states have internal predecessors, (2528), 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 07:35:27,670 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 316.0) internal successors, (2528), 8 states have internal predecessors, (2528), 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 07:35:27,670 INFO L175 Difference]: Start difference. First operand has 61 places, 57 transitions, 192 flow. Second operand 7 states and 1166 transitions. [2023-11-19 07:35:27,671 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 198 transitions, 1020 flow [2023-11-19 07:35:27,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 198 transitions, 1002 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:35:27,678 INFO L231 Difference]: Finished difference. Result has 72 places, 77 transitions, 406 flow [2023-11-19 07:35:27,679 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=316, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=406, PETRI_PLACES=72, PETRI_TRANSITIONS=77} [2023-11-19 07:35:27,680 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 17 predicate places. [2023-11-19 07:35:27,681 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 77 transitions, 406 flow [2023-11-19 07:35:27,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 140.8) internal successors, (704), 5 states have internal predecessors, (704), 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 07:35:27,682 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:35:27,682 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:35:27,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-19 07:35:27,682 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-19 07:35:27,684 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:35:27,684 INFO L85 PathProgramCache]: Analyzing trace with hash 832425645, now seen corresponding path program 1 times [2023-11-19 07:35:27,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:35:27,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947572564] [2023-11-19 07:35:27,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:35:27,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:35:27,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:35:27,801 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 07:35:27,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:35:27,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947572564] [2023-11-19 07:35:27,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947572564] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:35:27,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:35:27,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:35:27,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272646670] [2023-11-19 07:35:27,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:35:27,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:35:27,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:35:27,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:35:27,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:35:27,835 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 316 [2023-11-19 07:35:27,836 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 77 transitions, 406 flow. Second operand has 5 states, 5 states have (on average 140.8) internal successors, (704), 5 states have internal predecessors, (704), 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 07:35:27,837 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:35:27,837 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 316 [2023-11-19 07:35:27,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:35:29,194 INFO L124 PetriNetUnfolderBase]: 4708/8333 cut-off events. [2023-11-19 07:35:29,194 INFO L125 PetriNetUnfolderBase]: For 9909/9909 co-relation queries the response was YES. [2023-11-19 07:35:29,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24041 conditions, 8333 events. 4708/8333 cut-off events. For 9909/9909 co-relation queries the response was YES. Maximal size of possible extension queue 378. Compared 59348 event pairs, 662 based on Foata normal form. 253/8008 useless extension candidates. Maximal degree in co-relation 21444. Up to 3826 conditions per place. [2023-11-19 07:35:29,294 INFO L140 encePairwiseOnDemand]: 300/316 looper letters, 168 selfloop transitions, 33 changer transitions 0/208 dead transitions. [2023-11-19 07:35:29,295 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 208 transitions, 1274 flow [2023-11-19 07:35:29,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:35:29,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-19 07:35:29,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1163 transitions. [2023-11-19 07:35:29,302 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5257685352622061 [2023-11-19 07:35:29,302 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1163 transitions. [2023-11-19 07:35:29,302 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1163 transitions. [2023-11-19 07:35:29,304 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:35:29,304 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1163 transitions. [2023-11-19 07:35:29,309 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 166.14285714285714) internal successors, (1163), 7 states have internal predecessors, (1163), 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 07:35:29,315 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 316.0) internal successors, (2528), 8 states have internal predecessors, (2528), 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 07:35:29,317 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 316.0) internal successors, (2528), 8 states have internal predecessors, (2528), 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 07:35:29,317 INFO L175 Difference]: Start difference. First operand has 72 places, 77 transitions, 406 flow. Second operand 7 states and 1163 transitions. [2023-11-19 07:35:29,318 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 208 transitions, 1274 flow [2023-11-19 07:35:29,352 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 208 transitions, 1274 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:35:29,356 INFO L231 Difference]: Finished difference. Result has 82 places, 91 transitions, 656 flow [2023-11-19 07:35:29,357 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=316, PETRI_DIFFERENCE_MINUEND_FLOW=400, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=656, PETRI_PLACES=82, PETRI_TRANSITIONS=91} [2023-11-19 07:35:29,358 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 27 predicate places. [2023-11-19 07:35:29,358 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 91 transitions, 656 flow [2023-11-19 07:35:29,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 140.8) internal successors, (704), 5 states have internal predecessors, (704), 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 07:35:29,359 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:35:29,359 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-11-19 07:35:29,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-19 07:35:29,360 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-19 07:35:29,360 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:35:29,360 INFO L85 PathProgramCache]: Analyzing trace with hash 2106499929, now seen corresponding path program 1 times [2023-11-19 07:35:29,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:35:29,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768770955] [2023-11-19 07:35:29,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:35:29,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:35:29,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:35:29,384 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:35:29,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:35:29,403 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:35:29,403 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 07:35:29,404 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2023-11-19 07:35:29,404 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2023-11-19 07:35:29,404 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2023-11-19 07:35:29,405 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2023-11-19 07:35:29,405 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2023-11-19 07:35:29,405 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2023-11-19 07:35:29,405 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2023-11-19 07:35:29,406 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2023-11-19 07:35:29,406 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 17 remaining) [2023-11-19 07:35:29,406 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 17 remaining) [2023-11-19 07:35:29,406 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 17 remaining) [2023-11-19 07:35:29,407 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2023-11-19 07:35:29,407 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2023-11-19 07:35:29,407 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2023-11-19 07:35:29,407 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2023-11-19 07:35:29,408 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2023-11-19 07:35:29,408 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2023-11-19 07:35:29,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-19 07:35:29,409 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:35:29,410 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-19 07:35:29,410 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-19 07:35:29,444 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-19 07:35:29,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 189 places, 209 transitions, 445 flow [2023-11-19 07:35:29,541 INFO L124 PetriNetUnfolderBase]: 54/454 cut-off events. [2023-11-19 07:35:29,541 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-11-19 07:35:29,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 479 conditions, 454 events. 54/454 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1565 event pairs, 1 based on Foata normal form. 0/364 useless extension candidates. Maximal degree in co-relation 301. Up to 16 conditions per place. [2023-11-19 07:35:29,547 INFO L82 GeneralOperation]: Start removeDead. Operand has 189 places, 209 transitions, 445 flow [2023-11-19 07:35:29,552 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 189 places, 209 transitions, 445 flow [2023-11-19 07:35:29,552 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:35:29,553 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 189 places, 209 transitions, 445 flow [2023-11-19 07:35:29,553 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 189 places, 209 transitions, 445 flow [2023-11-19 07:35:29,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 189 places, 209 transitions, 445 flow [2023-11-19 07:35:29,633 INFO L124 PetriNetUnfolderBase]: 54/454 cut-off events. [2023-11-19 07:35:29,633 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-11-19 07:35:29,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 479 conditions, 454 events. 54/454 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1565 event pairs, 1 based on Foata normal form. 0/364 useless extension candidates. Maximal degree in co-relation 301. Up to 16 conditions per place. [2023-11-19 07:35:29,669 INFO L119 LiptonReduction]: Number of co-enabled transitions 21384 [2023-11-19 07:35:34,241 INFO L134 LiptonReduction]: Checked pairs total: 52707 [2023-11-19 07:35:34,242 INFO L136 LiptonReduction]: Total number of compositions: 170 [2023-11-19 07:35:34,244 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:35:34,245 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;@3759d2f2, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:35:34,245 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2023-11-19 07:35:34,249 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:35:34,249 INFO L124 PetriNetUnfolderBase]: 3/15 cut-off events. [2023-11-19 07:35:34,249 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:35:34,249 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:35:34,249 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 07:35:34,250 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 07:35:34,250 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:35:34,250 INFO L85 PathProgramCache]: Analyzing trace with hash 1223541308, now seen corresponding path program 1 times [2023-11-19 07:35:34,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:35:34,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262043003] [2023-11-19 07:35:34,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:35:34,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:35:34,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:35:34,294 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 07:35:34,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:35:34,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262043003] [2023-11-19 07:35:34,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262043003] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:35:34,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:35:34,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:35:34,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18229994] [2023-11-19 07:35:34,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:35:34,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:35:34,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:35:34,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:35:34,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:35:34,310 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 379 [2023-11-19 07:35:34,311 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 90 transitions, 207 flow. Second operand has 3 states, 3 states have (on average 173.33333333333334) internal successors, (520), 3 states have internal predecessors, (520), 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 07:35:34,311 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:35:34,311 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 379 [2023-11-19 07:35:34,311 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:35:46,847 INFO L124 PetriNetUnfolderBase]: 99392/142510 cut-off events. [2023-11-19 07:35:46,847 INFO L125 PetriNetUnfolderBase]: For 2441/2441 co-relation queries the response was YES. [2023-11-19 07:35:47,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 281988 conditions, 142510 events. 99392/142510 cut-off events. For 2441/2441 co-relation queries the response was YES. Maximal size of possible extension queue 3681. Compared 1064558 event pairs, 64598 based on Foata normal form. 13015/110356 useless extension candidates. Maximal degree in co-relation 24698. Up to 137955 conditions per place. [2023-11-19 07:35:47,735 INFO L140 encePairwiseOnDemand]: 353/379 looper letters, 73 selfloop transitions, 2 changer transitions 0/84 dead transitions. [2023-11-19 07:35:47,735 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 84 transitions, 345 flow [2023-11-19 07:35:47,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:35:47,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:35:47,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 621 transitions. [2023-11-19 07:35:47,739 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5461741424802111 [2023-11-19 07:35:47,739 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 621 transitions. [2023-11-19 07:35:47,739 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 621 transitions. [2023-11-19 07:35:47,740 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:35:47,740 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 621 transitions. [2023-11-19 07:35:47,742 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 207.0) internal successors, (621), 3 states have internal predecessors, (621), 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 07:35:47,745 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 379.0) internal successors, (1516), 4 states have internal predecessors, (1516), 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 07:35:47,746 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 379.0) internal successors, (1516), 4 states have internal predecessors, (1516), 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 07:35:47,746 INFO L175 Difference]: Start difference. First operand has 73 places, 90 transitions, 207 flow. Second operand 3 states and 621 transitions. [2023-11-19 07:35:47,747 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 84 transitions, 345 flow [2023-11-19 07:35:47,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 84 transitions, 345 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:35:47,754 INFO L231 Difference]: Finished difference. Result has 76 places, 70 transitions, 181 flow [2023-11-19 07:35:47,755 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=379, PETRI_DIFFERENCE_MINUEND_FLOW=165, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=181, PETRI_PLACES=76, PETRI_TRANSITIONS=70} [2023-11-19 07:35:47,756 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, 3 predicate places. [2023-11-19 07:35:47,756 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 70 transitions, 181 flow [2023-11-19 07:35:47,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 173.33333333333334) internal successors, (520), 3 states have internal predecessors, (520), 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 07:35:47,757 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:35:47,757 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:35:47,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-19 07:35:47,758 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 07:35:47,758 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:35:47,759 INFO L85 PathProgramCache]: Analyzing trace with hash -988887457, now seen corresponding path program 1 times [2023-11-19 07:35:47,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:35:47,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54256588] [2023-11-19 07:35:47,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:35:47,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:35:47,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:35:47,838 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 07:35:47,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:35:47,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54256588] [2023-11-19 07:35:47,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54256588] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:35:47,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:35:47,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:35:47,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714228062] [2023-11-19 07:35:47,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:35:47,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:35:47,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:35:47,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:35:47,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:35:47,863 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 379 [2023-11-19 07:35:47,864 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 70 transitions, 181 flow. Second operand has 3 states, 3 states have (on average 173.0) internal successors, (519), 3 states have internal predecessors, (519), 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 07:35:47,864 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:35:47,864 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 379 [2023-11-19 07:35:47,864 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand