./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread/stack_longest-1.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_ce560e5a-3a59-4871-9919-5cfa5cadb237/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce560e5a-3a59-4871-9919-5cfa5cadb237/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_ce560e5a-3a59-4871-9919-5cfa5cadb237/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce560e5a-3a59-4871-9919-5cfa5cadb237/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/stack_longest-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce560e5a-3a59-4871-9919-5cfa5cadb237/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_ce560e5a-3a59-4871-9919-5cfa5cadb237/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 529fe0895c01c52d9b18b51c32204a307faf547c0c07b22bc1a431308affcf90 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:53:51,157 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:53:51,283 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce560e5a-3a59-4871-9919-5cfa5cadb237/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-19 07:53:51,292 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:53:51,293 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:53:51,331 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:53:51,332 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:53:51,332 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:53:51,334 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:53:51,339 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:53:51,340 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:53:51,341 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:53:51,342 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:53:51,344 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:53:51,344 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:53:51,345 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:53:51,345 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:53:51,346 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:53:51,346 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:53:51,347 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:53:51,347 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:53:51,348 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:53:51,349 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 07:53:51,349 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:53:51,350 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:53:51,350 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:53:51,351 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:53:51,352 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:53:51,352 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:53:51,353 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:53:51,354 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:53:51,355 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:53:51,355 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:53:51,355 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:53:51,356 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:53:51,356 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:53:51,356 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:53:51,357 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:53:51,357 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:53:51,357 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:53:51,358 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:53:51,358 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_ce560e5a-3a59-4871-9919-5cfa5cadb237/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce560e5a-3a59-4871-9919-5cfa5cadb237/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 529fe0895c01c52d9b18b51c32204a307faf547c0c07b22bc1a431308affcf90 [2023-11-19 07:53:51,668 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:53:51,692 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:53:51,695 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:53:51,697 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:53:51,697 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:53:51,699 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce560e5a-3a59-4871-9919-5cfa5cadb237/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/pthread/stack_longest-1.i [2023-11-19 07:53:54,856 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:53:55,232 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:53:55,236 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce560e5a-3a59-4871-9919-5cfa5cadb237/sv-benchmarks/c/pthread/stack_longest-1.i [2023-11-19 07:53:55,260 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce560e5a-3a59-4871-9919-5cfa5cadb237/bin/uautomizer-verify-uCwYo4JHxu/data/882c9b7d9/4a798c533e8e4100b3769a71827b57d7/FLAG0e50c6a3d [2023-11-19 07:53:55,278 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce560e5a-3a59-4871-9919-5cfa5cadb237/bin/uautomizer-verify-uCwYo4JHxu/data/882c9b7d9/4a798c533e8e4100b3769a71827b57d7 [2023-11-19 07:53:55,284 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:53:55,286 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:53:55,290 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:53:55,290 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:53:55,296 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:53:55,297 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:53:55" (1/1) ... [2023-11-19 07:53:55,298 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d817bed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:55, skipping insertion in model container [2023-11-19 07:53:55,298 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:53:55" (1/1) ... [2023-11-19 07:53:55,377 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:53:56,001 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:53:56,018 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:53:56,115 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:53:56,225 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:53:56,225 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:56 WrapperNode [2023-11-19 07:53:56,226 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:53:56,227 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:53:56,230 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:53:56,231 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:53:56,239 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:56" (1/1) ... [2023-11-19 07:53:56,273 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:56" (1/1) ... [2023-11-19 07:53:56,313 INFO L138 Inliner]: procedures = 277, calls = 40, calls flagged for inlining = 13, calls inlined = 14, statements flattened = 169 [2023-11-19 07:53:56,314 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:53:56,314 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:53:56,315 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:53:56,315 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:53:56,324 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:56" (1/1) ... [2023-11-19 07:53:56,324 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:56" (1/1) ... [2023-11-19 07:53:56,329 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:56" (1/1) ... [2023-11-19 07:53:56,330 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:56" (1/1) ... [2023-11-19 07:53:56,340 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:56" (1/1) ... [2023-11-19 07:53:56,344 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:56" (1/1) ... [2023-11-19 07:53:56,349 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:56" (1/1) ... [2023-11-19 07:53:56,351 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:56" (1/1) ... [2023-11-19 07:53:56,355 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:53:56,360 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:53:56,360 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:53:56,360 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:53:56,361 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:56" (1/1) ... [2023-11-19 07:53:56,378 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:53:56,395 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce560e5a-3a59-4871-9919-5cfa5cadb237/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:53:56,412 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce560e5a-3a59-4871-9919-5cfa5cadb237/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:53:56,443 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce560e5a-3a59-4871-9919-5cfa5cadb237/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:53:56,459 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-11-19 07:53:56,459 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-11-19 07:53:56,460 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-11-19 07:53:56,460 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-11-19 07:53:56,460 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:53:56,460 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:53:56,461 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 07:53:56,461 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:53:56,461 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-19 07:53:56,461 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:53:56,461 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:53:56,462 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:53:56,462 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:53:56,464 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 07:53:56,617 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:53:56,620 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:53:56,996 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:53:57,012 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:53:57,016 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-19 07:53:57,024 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:53:57 BoogieIcfgContainer [2023-11-19 07:53:57,025 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:53:57,029 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:53:57,030 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:53:57,034 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:53:57,035 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:53:55" (1/3) ... [2023-11-19 07:53:57,037 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c667831 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:53:57, skipping insertion in model container [2023-11-19 07:53:57,037 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:56" (2/3) ... [2023-11-19 07:53:57,038 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c667831 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:53:57, skipping insertion in model container [2023-11-19 07:53:57,038 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:53:57" (3/3) ... [2023-11-19 07:53:57,040 INFO L112 eAbstractionObserver]: Analyzing ICFG stack_longest-1.i [2023-11-19 07:53:57,051 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 07:53:57,065 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:53:57,065 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-11-19 07:53:57,066 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 07:53:57,182 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-19 07:53:57,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 185 places, 190 transitions, 394 flow [2023-11-19 07:53:57,424 INFO L124 PetriNetUnfolderBase]: 12/188 cut-off events. [2023-11-19 07:53:57,424 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-19 07:53:57,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 197 conditions, 188 events. 12/188 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 552 event pairs, 0 based on Foata normal form. 0/168 useless extension candidates. Maximal degree in co-relation 150. Up to 3 conditions per place. [2023-11-19 07:53:57,433 INFO L82 GeneralOperation]: Start removeDead. Operand has 185 places, 190 transitions, 394 flow [2023-11-19 07:53:57,441 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 173 places, 178 transitions, 365 flow [2023-11-19 07:53:57,445 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:53:57,456 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 173 places, 178 transitions, 365 flow [2023-11-19 07:53:57,459 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 173 places, 178 transitions, 365 flow [2023-11-19 07:53:57,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 173 places, 178 transitions, 365 flow [2023-11-19 07:53:57,514 INFO L124 PetriNetUnfolderBase]: 12/178 cut-off events. [2023-11-19 07:53:57,515 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-19 07:53:57,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 186 conditions, 178 events. 12/178 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 455 event pairs, 0 based on Foata normal form. 0/158 useless extension candidates. Maximal degree in co-relation 150. Up to 3 conditions per place. [2023-11-19 07:53:57,526 INFO L119 LiptonReduction]: Number of co-enabled transitions 11748 [2023-11-19 07:54:02,670 INFO L134 LiptonReduction]: Checked pairs total: 15782 [2023-11-19 07:54:02,671 INFO L136 LiptonReduction]: Total number of compositions: 179 [2023-11-19 07:54:02,696 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:54:02,705 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;@45700555, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:54:02,705 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2023-11-19 07:54:02,717 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:54:02,718 INFO L124 PetriNetUnfolderBase]: 1/17 cut-off events. [2023-11-19 07:54:02,718 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-19 07:54:02,718 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:54:02,719 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:54:02,719 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-19 07:54:02,726 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:54:02,726 INFO L85 PathProgramCache]: Analyzing trace with hash 2028563519, now seen corresponding path program 1 times [2023-11-19 07:54:02,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:54:02,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745358517] [2023-11-19 07:54:02,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:02,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:54:02,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:54:03,151 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 07:54:03,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:54:03,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745358517] [2023-11-19 07:54:03,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745358517] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:54:03,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:54:03,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:54:03,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233627504] [2023-11-19 07:54:03,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:54:03,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:54:03,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:54:03,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:54:03,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:54:03,229 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 369 [2023-11-19 07:54:03,236 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 40 transitions, 89 flow. Second operand has 3 states, 3 states have (on average 175.33333333333334) internal successors, (526), 3 states have internal predecessors, (526), 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 07:54:03,237 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:54:03,237 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 369 [2023-11-19 07:54:03,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:54:03,653 INFO L124 PetriNetUnfolderBase]: 1413/2282 cut-off events. [2023-11-19 07:54:03,653 INFO L125 PetriNetUnfolderBase]: For 83/83 co-relation queries the response was YES. [2023-11-19 07:54:03,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4613 conditions, 2282 events. 1413/2282 cut-off events. For 83/83 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 10417 event pairs, 412 based on Foata normal form. 0/1579 useless extension candidates. Maximal degree in co-relation 4322. Up to 1406 conditions per place. [2023-11-19 07:54:03,682 INFO L140 encePairwiseOnDemand]: 360/369 looper letters, 65 selfloop transitions, 4 changer transitions 0/70 dead transitions. [2023-11-19 07:54:03,683 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 70 transitions, 293 flow [2023-11-19 07:54:03,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:54:03,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:54:03,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 593 transitions. [2023-11-19 07:54:03,707 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5356820234869015 [2023-11-19 07:54:03,708 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 593 transitions. [2023-11-19 07:54:03,709 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 593 transitions. [2023-11-19 07:54:03,713 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:54:03,716 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 593 transitions. [2023-11-19 07:54:03,722 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 197.66666666666666) internal successors, (593), 3 states have internal predecessors, (593), 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 07:54:03,731 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 369.0) internal successors, (1476), 4 states have internal predecessors, (1476), 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 07:54:03,732 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 369.0) internal successors, (1476), 4 states have internal predecessors, (1476), 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 07:54:03,734 INFO L175 Difference]: Start difference. First operand has 42 places, 40 transitions, 89 flow. Second operand 3 states and 593 transitions. [2023-11-19 07:54:03,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 70 transitions, 293 flow [2023-11-19 07:54:03,740 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 70 transitions, 285 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-19 07:54:03,743 INFO L231 Difference]: Finished difference. Result has 43 places, 43 transitions, 122 flow [2023-11-19 07:54:03,746 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=369, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=122, PETRI_PLACES=43, PETRI_TRANSITIONS=43} [2023-11-19 07:54:03,752 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 1 predicate places. [2023-11-19 07:54:03,752 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 43 transitions, 122 flow [2023-11-19 07:54:03,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 175.33333333333334) internal successors, (526), 3 states have internal predecessors, (526), 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 07:54:03,753 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:54:03,753 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:54:03,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:54:03,754 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-19 07:54:03,754 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:54:03,754 INFO L85 PathProgramCache]: Analyzing trace with hash -511925947, now seen corresponding path program 1 times [2023-11-19 07:54:03,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:54:03,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079934566] [2023-11-19 07:54:03,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:03,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:54:03,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:54:03,873 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 07:54:03,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:54:03,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079934566] [2023-11-19 07:54:03,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079934566] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:54:03,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:54:03,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:54:03,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597817655] [2023-11-19 07:54:03,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:54:03,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:54:03,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:54:03,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:54:03,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:54:03,890 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 369 [2023-11-19 07:54:03,891 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 43 transitions, 122 flow. Second operand has 3 states, 3 states have (on average 175.66666666666666) internal successors, (527), 3 states have internal predecessors, (527), 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 07:54:03,892 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:54:03,892 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 369 [2023-11-19 07:54:03,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:54:04,417 INFO L124 PetriNetUnfolderBase]: 2146/3527 cut-off events. [2023-11-19 07:54:04,418 INFO L125 PetriNetUnfolderBase]: For 378/378 co-relation queries the response was YES. [2023-11-19 07:54:04,423 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7751 conditions, 3527 events. 2146/3527 cut-off events. For 378/378 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 18598 event pairs, 1040 based on Foata normal form. 0/2861 useless extension candidates. Maximal degree in co-relation 7096. Up to 2164 conditions per place. [2023-11-19 07:54:04,447 INFO L140 encePairwiseOnDemand]: 364/369 looper letters, 74 selfloop transitions, 2 changer transitions 0/77 dead transitions. [2023-11-19 07:54:04,447 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 77 transitions, 371 flow [2023-11-19 07:54:04,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:54:04,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:54:04,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 592 transitions. [2023-11-19 07:54:04,450 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5347786811201445 [2023-11-19 07:54:04,450 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 592 transitions. [2023-11-19 07:54:04,451 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 592 transitions. [2023-11-19 07:54:04,451 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:54:04,451 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 592 transitions. [2023-11-19 07:54:04,453 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 197.33333333333334) internal successors, (592), 3 states have internal predecessors, (592), 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 07:54:04,457 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 369.0) internal successors, (1476), 4 states have internal predecessors, (1476), 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 07:54:04,458 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 369.0) internal successors, (1476), 4 states have internal predecessors, (1476), 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 07:54:04,458 INFO L175 Difference]: Start difference. First operand has 43 places, 43 transitions, 122 flow. Second operand 3 states and 592 transitions. [2023-11-19 07:54:04,459 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 77 transitions, 371 flow [2023-11-19 07:54:04,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 77 transitions, 357 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:54:04,467 INFO L231 Difference]: Finished difference. Result has 44 places, 44 transitions, 130 flow [2023-11-19 07:54:04,467 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=369, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=130, PETRI_PLACES=44, PETRI_TRANSITIONS=44} [2023-11-19 07:54:04,468 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 2 predicate places. [2023-11-19 07:54:04,469 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 44 transitions, 130 flow [2023-11-19 07:54:04,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 175.66666666666666) internal successors, (527), 3 states have internal predecessors, (527), 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 07:54:04,469 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:54:04,470 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:54:04,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:54:04,470 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-19 07:54:04,471 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:54:04,471 INFO L85 PathProgramCache]: Analyzing trace with hash -2063347735, now seen corresponding path program 1 times [2023-11-19 07:54:04,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:54:04,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197063782] [2023-11-19 07:54:04,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:04,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:54:04,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:54:04,562 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 07:54:04,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:54:04,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197063782] [2023-11-19 07:54:04,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197063782] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:54:04,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:54:04,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:54:04,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945473268] [2023-11-19 07:54:04,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:54:04,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:54:04,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:54:04,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:54:04,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:54:04,578 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 369 [2023-11-19 07:54:04,579 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 44 transitions, 130 flow. Second operand has 3 states, 3 states have (on average 176.66666666666666) internal successors, (530), 3 states have internal predecessors, (530), 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 07:54:04,580 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:54:04,580 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 369 [2023-11-19 07:54:04,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:54:05,273 INFO L124 PetriNetUnfolderBase]: 3301/5324 cut-off events. [2023-11-19 07:54:05,273 INFO L125 PetriNetUnfolderBase]: For 671/671 co-relation queries the response was YES. [2023-11-19 07:54:05,283 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12423 conditions, 5324 events. 3301/5324 cut-off events. For 671/671 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 30427 event pairs, 1557 based on Foata normal form. 0/4468 useless extension candidates. Maximal degree in co-relation 10142. Up to 3275 conditions per place. [2023-11-19 07:54:05,321 INFO L140 encePairwiseOnDemand]: 364/369 looper letters, 76 selfloop transitions, 2 changer transitions 0/79 dead transitions. [2023-11-19 07:54:05,322 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 79 transitions, 394 flow [2023-11-19 07:54:05,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:54:05,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:54:05,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 592 transitions. [2023-11-19 07:54:05,326 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5347786811201445 [2023-11-19 07:54:05,326 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 592 transitions. [2023-11-19 07:54:05,327 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 592 transitions. [2023-11-19 07:54:05,327 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:54:05,328 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 592 transitions. [2023-11-19 07:54:05,330 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 197.33333333333334) internal successors, (592), 3 states have internal predecessors, (592), 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 07:54:05,335 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 369.0) internal successors, (1476), 4 states have internal predecessors, (1476), 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 07:54:05,336 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 369.0) internal successors, (1476), 4 states have internal predecessors, (1476), 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 07:54:05,337 INFO L175 Difference]: Start difference. First operand has 44 places, 44 transitions, 130 flow. Second operand 3 states and 592 transitions. [2023-11-19 07:54:05,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 79 transitions, 394 flow [2023-11-19 07:54:05,340 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 79 transitions, 390 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:54:05,342 INFO L231 Difference]: Finished difference. Result has 46 places, 45 transitions, 144 flow [2023-11-19 07:54:05,343 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=369, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=144, PETRI_PLACES=46, PETRI_TRANSITIONS=45} [2023-11-19 07:54:05,344 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 4 predicate places. [2023-11-19 07:54:05,344 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 45 transitions, 144 flow [2023-11-19 07:54:05,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 176.66666666666666) internal successors, (530), 3 states have internal predecessors, (530), 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 07:54:05,346 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:54:05,346 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:54:05,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 07:54:05,347 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-19 07:54:05,347 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:54:05,348 INFO L85 PathProgramCache]: Analyzing trace with hash -1440187446, now seen corresponding path program 1 times [2023-11-19 07:54:05,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:54:05,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609489830] [2023-11-19 07:54:05,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:05,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:54:05,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:54:05,444 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 07:54:05,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:54:05,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609489830] [2023-11-19 07:54:05,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609489830] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:54:05,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:54:05,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:54:05,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863838684] [2023-11-19 07:54:05,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:54:05,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:54:05,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:54:05,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:54:05,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:54:05,461 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 369 [2023-11-19 07:54:05,463 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 45 transitions, 144 flow. Second operand has 3 states, 3 states have (on average 176.66666666666666) internal successors, (530), 3 states have internal predecessors, (530), 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 07:54:05,463 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:54:05,463 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 369 [2023-11-19 07:54:05,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:54:06,101 INFO L124 PetriNetUnfolderBase]: 2991/4914 cut-off events. [2023-11-19 07:54:06,102 INFO L125 PetriNetUnfolderBase]: For 794/794 co-relation queries the response was YES. [2023-11-19 07:54:06,111 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11606 conditions, 4914 events. 2991/4914 cut-off events. For 794/794 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 28177 event pairs, 339 based on Foata normal form. 0/4340 useless extension candidates. Maximal degree in co-relation 10866. Up to 4622 conditions per place. [2023-11-19 07:54:06,150 INFO L140 encePairwiseOnDemand]: 367/369 looper letters, 62 selfloop transitions, 1 changer transitions 0/64 dead transitions. [2023-11-19 07:54:06,151 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 64 transitions, 331 flow [2023-11-19 07:54:06,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:54:06,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:54:06,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 576 transitions. [2023-11-19 07:54:06,154 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5203252032520326 [2023-11-19 07:54:06,154 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 576 transitions. [2023-11-19 07:54:06,154 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 576 transitions. [2023-11-19 07:54:06,154 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:54:06,155 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 576 transitions. [2023-11-19 07:54:06,156 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 192.0) internal successors, (576), 3 states have internal predecessors, (576), 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 07:54:06,159 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 369.0) internal successors, (1476), 4 states have internal predecessors, (1476), 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 07:54:06,161 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 369.0) internal successors, (1476), 4 states have internal predecessors, (1476), 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 07:54:06,161 INFO L175 Difference]: Start difference. First operand has 46 places, 45 transitions, 144 flow. Second operand 3 states and 576 transitions. [2023-11-19 07:54:06,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 64 transitions, 331 flow [2023-11-19 07:54:06,162 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 64 transitions, 327 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:54:06,165 INFO L231 Difference]: Finished difference. Result has 46 places, 44 transitions, 140 flow [2023-11-19 07:54:06,165 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=369, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=140, PETRI_PLACES=46, PETRI_TRANSITIONS=44} [2023-11-19 07:54:06,167 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 4 predicate places. [2023-11-19 07:54:06,167 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 44 transitions, 140 flow [2023-11-19 07:54:06,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 176.66666666666666) internal successors, (530), 3 states have internal predecessors, (530), 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 07:54:06,168 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:54:06,168 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:54:06,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 07:54:06,169 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-19 07:54:06,169 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:54:06,169 INFO L85 PathProgramCache]: Analyzing trace with hash -1440187420, now seen corresponding path program 1 times [2023-11-19 07:54:06,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:54:06,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331723969] [2023-11-19 07:54:06,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:06,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:54:06,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:54:06,261 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 07:54:06,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:54:06,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331723969] [2023-11-19 07:54:06,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331723969] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:54:06,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:54:06,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:54:06,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363781545] [2023-11-19 07:54:06,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:54:06,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:54:06,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:54:06,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:54:06,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:54:06,277 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 369 [2023-11-19 07:54:06,278 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 44 transitions, 140 flow. Second operand has 3 states, 3 states have (on average 175.66666666666666) internal successors, (527), 3 states have internal predecessors, (527), 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 07:54:06,278 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:54:06,284 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 369 [2023-11-19 07:54:06,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:54:06,819 INFO L124 PetriNetUnfolderBase]: 2841/4664 cut-off events. [2023-11-19 07:54:06,820 INFO L125 PetriNetUnfolderBase]: For 715/715 co-relation queries the response was YES. [2023-11-19 07:54:06,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10926 conditions, 4664 events. 2841/4664 cut-off events. For 715/715 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 26215 event pairs, 541 based on Foata normal form. 0/4208 useless extension candidates. Maximal degree in co-relation 9826. Up to 3776 conditions per place. [2023-11-19 07:54:06,882 INFO L140 encePairwiseOnDemand]: 365/369 looper letters, 59 selfloop transitions, 4 changer transitions 0/64 dead transitions. [2023-11-19 07:54:06,882 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 64 transitions, 327 flow [2023-11-19 07:54:06,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:54:06,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:54:06,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 573 transitions. [2023-11-19 07:54:06,885 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5176151761517616 [2023-11-19 07:54:06,885 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 573 transitions. [2023-11-19 07:54:06,885 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 573 transitions. [2023-11-19 07:54:06,886 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:54:06,887 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 573 transitions. [2023-11-19 07:54:06,889 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 191.0) internal successors, (573), 3 states have internal predecessors, (573), 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 07:54:06,892 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 369.0) internal successors, (1476), 4 states have internal predecessors, (1476), 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 07:54:06,894 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 369.0) internal successors, (1476), 4 states have internal predecessors, (1476), 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 07:54:06,894 INFO L175 Difference]: Start difference. First operand has 46 places, 44 transitions, 140 flow. Second operand 3 states and 573 transitions. [2023-11-19 07:54:06,894 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 64 transitions, 327 flow [2023-11-19 07:54:06,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 64 transitions, 326 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:54:06,898 INFO L231 Difference]: Finished difference. Result has 47 places, 44 transitions, 151 flow [2023-11-19 07:54:06,899 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=369, PETRI_DIFFERENCE_MINUEND_FLOW=135, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=151, PETRI_PLACES=47, PETRI_TRANSITIONS=44} [2023-11-19 07:54:06,902 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 5 predicate places. [2023-11-19 07:54:06,902 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 44 transitions, 151 flow [2023-11-19 07:54:06,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 175.66666666666666) internal successors, (527), 3 states have internal predecessors, (527), 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 07:54:06,903 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:54:06,903 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:54:06,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 07:54:06,904 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-19 07:54:06,904 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:54:06,905 INFO L85 PathProgramCache]: Analyzing trace with hash -1093313827, now seen corresponding path program 1 times [2023-11-19 07:54:06,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:54:06,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160530123] [2023-11-19 07:54:06,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:06,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:54:06,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:54:07,070 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:54:07,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:54:07,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160530123] [2023-11-19 07:54:07,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160530123] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:54:07,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [623563373] [2023-11-19 07:54:07,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:07,077 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:54:07,077 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce560e5a-3a59-4871-9919-5cfa5cadb237/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:54:07,084 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce560e5a-3a59-4871-9919-5cfa5cadb237/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:54:07,112 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce560e5a-3a59-4871-9919-5cfa5cadb237/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 07:54:07,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:54:07,210 INFO L262 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:54:07,215 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:54:07,289 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:54:07,289 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:54:07,345 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:54:07,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [623563373] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:54:07,345 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:54:07,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2023-11-19 07:54:07,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087494331] [2023-11-19 07:54:07,346 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:54:07,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-19 07:54:07,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:54:07,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-19 07:54:07,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-19 07:54:07,460 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 369 [2023-11-19 07:54:07,463 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 44 transitions, 151 flow. Second operand has 10 states, 10 states have (on average 170.7) internal successors, (1707), 10 states have internal predecessors, (1707), 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 07:54:07,463 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:54:07,463 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 369 [2023-11-19 07:54:07,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:54:08,847 INFO L124 PetriNetUnfolderBase]: 5235/8562 cut-off events. [2023-11-19 07:54:08,847 INFO L125 PetriNetUnfolderBase]: For 3640/3640 co-relation queries the response was YES. [2023-11-19 07:54:08,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21350 conditions, 8562 events. 5235/8562 cut-off events. For 3640/3640 co-relation queries the response was YES. Maximal size of possible extension queue 220. Compared 49456 event pairs, 1065 based on Foata normal form. 110/7922 useless extension candidates. Maximal degree in co-relation 20000. Up to 2827 conditions per place. [2023-11-19 07:54:08,908 INFO L140 encePairwiseOnDemand]: 359/369 looper letters, 248 selfloop transitions, 42 changer transitions 0/291 dead transitions. [2023-11-19 07:54:08,908 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 291 transitions, 1582 flow [2023-11-19 07:54:08,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-19 07:54:08,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-11-19 07:54:08,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2949 transitions. [2023-11-19 07:54:08,919 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4994918699186992 [2023-11-19 07:54:08,919 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2949 transitions. [2023-11-19 07:54:08,920 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2949 transitions. [2023-11-19 07:54:08,922 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:54:08,922 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2949 transitions. [2023-11-19 07:54:08,931 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 184.3125) internal successors, (2949), 16 states have internal predecessors, (2949), 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 07:54:08,945 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 369.0) internal successors, (6273), 17 states have internal predecessors, (6273), 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 07:54:08,948 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 369.0) internal successors, (6273), 17 states have internal predecessors, (6273), 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 07:54:08,949 INFO L175 Difference]: Start difference. First operand has 47 places, 44 transitions, 151 flow. Second operand 16 states and 2949 transitions. [2023-11-19 07:54:08,949 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 291 transitions, 1582 flow [2023-11-19 07:54:08,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 291 transitions, 1539 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:54:08,967 INFO L231 Difference]: Finished difference. Result has 66 places, 82 transitions, 449 flow [2023-11-19 07:54:08,968 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=369, PETRI_DIFFERENCE_MINUEND_FLOW=147, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=449, PETRI_PLACES=66, PETRI_TRANSITIONS=82} [2023-11-19 07:54:08,970 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 24 predicate places. [2023-11-19 07:54:08,971 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 82 transitions, 449 flow [2023-11-19 07:54:08,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 170.7) internal successors, (1707), 10 states have internal predecessors, (1707), 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 07:54:08,972 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:54:08,972 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:54:08,999 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce560e5a-3a59-4871-9919-5cfa5cadb237/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 07:54:09,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce560e5a-3a59-4871-9919-5cfa5cadb237/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-19 07:54:09,194 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-19 07:54:09,195 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:54:09,195 INFO L85 PathProgramCache]: Analyzing trace with hash 1485442743, now seen corresponding path program 1 times [2023-11-19 07:54:09,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:54:09,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351104772] [2023-11-19 07:54:09,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:09,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:54:09,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:54:09,313 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 07:54:09,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:54:09,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351104772] [2023-11-19 07:54:09,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351104772] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:54:09,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:54:09,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:54:09,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929166777] [2023-11-19 07:54:09,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:54:09,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:54:09,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:54:09,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:54:09,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:54:09,335 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 369 [2023-11-19 07:54:09,336 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 82 transitions, 449 flow. Second operand has 3 states, 3 states have (on average 176.33333333333334) internal successors, (529), 3 states have internal predecessors, (529), 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 07:54:09,336 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:54:09,339 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 369 [2023-11-19 07:54:09,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:54:09,777 INFO L124 PetriNetUnfolderBase]: 1681/3028 cut-off events. [2023-11-19 07:54:09,777 INFO L125 PetriNetUnfolderBase]: For 2743/2743 co-relation queries the response was YES. [2023-11-19 07:54:09,784 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8789 conditions, 3028 events. 1681/3028 cut-off events. For 2743/2743 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 16681 event pairs, 301 based on Foata normal form. 288/3166 useless extension candidates. Maximal degree in co-relation 8051. Up to 2344 conditions per place. [2023-11-19 07:54:09,797 INFO L140 encePairwiseOnDemand]: 362/369 looper letters, 59 selfloop transitions, 9 changer transitions 0/68 dead transitions. [2023-11-19 07:54:09,797 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 68 transitions, 463 flow [2023-11-19 07:54:09,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:54:09,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:54:09,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 563 transitions. [2023-11-19 07:54:09,802 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5085817524841915 [2023-11-19 07:54:09,802 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 563 transitions. [2023-11-19 07:54:09,802 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 563 transitions. [2023-11-19 07:54:09,803 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:54:09,803 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 563 transitions. [2023-11-19 07:54:09,805 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 187.66666666666666) internal successors, (563), 3 states have internal predecessors, (563), 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 07:54:09,807 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 369.0) internal successors, (1476), 4 states have internal predecessors, (1476), 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 07:54:09,808 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 369.0) internal successors, (1476), 4 states have internal predecessors, (1476), 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 07:54:09,809 INFO L175 Difference]: Start difference. First operand has 66 places, 82 transitions, 449 flow. Second operand 3 states and 563 transitions. [2023-11-19 07:54:09,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 68 transitions, 463 flow [2023-11-19 07:54:09,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 68 transitions, 427 flow, removed 14 selfloop flow, removed 3 redundant places. [2023-11-19 07:54:09,842 INFO L231 Difference]: Finished difference. Result has 58 places, 57 transitions, 265 flow [2023-11-19 07:54:09,843 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=369, PETRI_DIFFERENCE_MINUEND_FLOW=247, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=265, PETRI_PLACES=58, PETRI_TRANSITIONS=57} [2023-11-19 07:54:09,844 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 16 predicate places. [2023-11-19 07:54:09,844 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 57 transitions, 265 flow [2023-11-19 07:54:09,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 176.33333333333334) internal successors, (529), 3 states have internal predecessors, (529), 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 07:54:09,845 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:54:09,845 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:54:09,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 07:54:09,845 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-19 07:54:09,849 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:54:09,849 INFO L85 PathProgramCache]: Analyzing trace with hash 464948087, now seen corresponding path program 1 times [2023-11-19 07:54:09,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:54:09,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207016963] [2023-11-19 07:54:09,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:09,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:54:09,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:54:10,041 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:54:10,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:54:10,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207016963] [2023-11-19 07:54:10,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207016963] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:54:10,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1672394322] [2023-11-19 07:54:10,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:10,042 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:54:10,042 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce560e5a-3a59-4871-9919-5cfa5cadb237/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:54:10,043 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce560e5a-3a59-4871-9919-5cfa5cadb237/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:54:10,060 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce560e5a-3a59-4871-9919-5cfa5cadb237/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 07:54:10,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:54:10,162 INFO L262 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 07:54:10,165 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:54:10,195 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:54:10,196 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:54:10,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1672394322] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:54:10,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:54:10,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 4 [2023-11-19 07:54:10,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865401495] [2023-11-19 07:54:10,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:54:10,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:54:10,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:54:10,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:54:10,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:54:10,240 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 369 [2023-11-19 07:54:10,242 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 57 transitions, 265 flow. Second operand has 5 states, 5 states have (on average 170.2) internal successors, (851), 5 states have internal predecessors, (851), 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 07:54:10,242 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:54:10,242 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 369 [2023-11-19 07:54:10,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:54:10,804 INFO L124 PetriNetUnfolderBase]: 1720/3175 cut-off events. [2023-11-19 07:54:10,805 INFO L125 PetriNetUnfolderBase]: For 2230/2230 co-relation queries the response was YES. [2023-11-19 07:54:10,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9125 conditions, 3175 events. 1720/3175 cut-off events. For 2230/2230 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 16914 event pairs, 375 based on Foata normal form. 126/3129 useless extension candidates. Maximal degree in co-relation 4659. Up to 1602 conditions per place. [2023-11-19 07:54:10,826 INFO L140 encePairwiseOnDemand]: 359/369 looper letters, 96 selfloop transitions, 18 changer transitions 0/115 dead transitions. [2023-11-19 07:54:10,826 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 115 transitions, 722 flow [2023-11-19 07:54:10,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:54:10,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:54:10,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1104 transitions. [2023-11-19 07:54:10,831 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4986449864498645 [2023-11-19 07:54:10,832 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1104 transitions. [2023-11-19 07:54:10,832 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1104 transitions. [2023-11-19 07:54:10,833 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:54:10,833 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1104 transitions. [2023-11-19 07:54:10,836 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 184.0) internal successors, (1104), 6 states have internal predecessors, (1104), 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 07:54:10,841 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 369.0) internal successors, (2583), 7 states have internal predecessors, (2583), 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 07:54:10,842 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 369.0) internal successors, (2583), 7 states have internal predecessors, (2583), 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 07:54:10,843 INFO L175 Difference]: Start difference. First operand has 58 places, 57 transitions, 265 flow. Second operand 6 states and 1104 transitions. [2023-11-19 07:54:10,843 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 115 transitions, 722 flow [2023-11-19 07:54:10,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 115 transitions, 703 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:54:10,851 INFO L231 Difference]: Finished difference. Result has 65 places, 57 transitions, 344 flow [2023-11-19 07:54:10,852 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=369, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=344, PETRI_PLACES=65, PETRI_TRANSITIONS=57} [2023-11-19 07:54:10,854 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 23 predicate places. [2023-11-19 07:54:10,854 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 57 transitions, 344 flow [2023-11-19 07:54:10,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 170.2) internal successors, (851), 5 states have internal predecessors, (851), 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 07:54:10,855 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:54:10,855 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:54:10,881 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce560e5a-3a59-4871-9919-5cfa5cadb237/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-19 07:54:11,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce560e5a-3a59-4871-9919-5cfa5cadb237/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-19 07:54:11,076 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-19 07:54:11,077 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:54:11,077 INFO L85 PathProgramCache]: Analyzing trace with hash 727500609, now seen corresponding path program 1 times [2023-11-19 07:54:11,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:54:11,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170986043] [2023-11-19 07:54:11,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:11,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:54:11,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:54:11,233 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:54:11,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:54:11,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170986043] [2023-11-19 07:54:11,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170986043] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:54:11,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1596851820] [2023-11-19 07:54:11,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:11,234 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:54:11,234 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce560e5a-3a59-4871-9919-5cfa5cadb237/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:54:11,235 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce560e5a-3a59-4871-9919-5cfa5cadb237/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:54:11,252 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce560e5a-3a59-4871-9919-5cfa5cadb237/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 07:54:11,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:54:11,353 INFO L262 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 07:54:11,355 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:54:11,404 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 07:54:11,404 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:54:11,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1596851820] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:54:11,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:54:11,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 4 [2023-11-19 07:54:11,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87404851] [2023-11-19 07:54:11,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:54:11,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:54:11,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:54:11,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:54:11,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:54:11,451 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 369 [2023-11-19 07:54:11,452 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 57 transitions, 344 flow. Second operand has 5 states, 5 states have (on average 170.6) internal successors, (853), 5 states have internal predecessors, (853), 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 07:54:11,453 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:54:11,453 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 369 [2023-11-19 07:54:11,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:54:12,125 INFO L124 PetriNetUnfolderBase]: 1829/3396 cut-off events. [2023-11-19 07:54:12,126 INFO L125 PetriNetUnfolderBase]: For 3874/3874 co-relation queries the response was YES. [2023-11-19 07:54:12,138 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10058 conditions, 3396 events. 1829/3396 cut-off events. For 3874/3874 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 17917 event pairs, 504 based on Foata normal form. 56/3270 useless extension candidates. Maximal degree in co-relation 5941. Up to 2205 conditions per place. [2023-11-19 07:54:12,158 INFO L140 encePairwiseOnDemand]: 359/369 looper letters, 101 selfloop transitions, 11 changer transitions 0/113 dead transitions. [2023-11-19 07:54:12,158 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 113 transitions, 768 flow [2023-11-19 07:54:12,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:54:12,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:54:12,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1100 transitions. [2023-11-19 07:54:12,164 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4968383017163505 [2023-11-19 07:54:12,164 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1100 transitions. [2023-11-19 07:54:12,165 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1100 transitions. [2023-11-19 07:54:12,166 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:54:12,166 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1100 transitions. [2023-11-19 07:54:12,170 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 183.33333333333334) internal successors, (1100), 6 states have internal predecessors, (1100), 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 07:54:12,176 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 369.0) internal successors, (2583), 7 states have internal predecessors, (2583), 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 07:54:12,178 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 369.0) internal successors, (2583), 7 states have internal predecessors, (2583), 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 07:54:12,178 INFO L175 Difference]: Start difference. First operand has 65 places, 57 transitions, 344 flow. Second operand 6 states and 1100 transitions. [2023-11-19 07:54:12,178 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 113 transitions, 768 flow [2023-11-19 07:54:12,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 113 transitions, 760 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-11-19 07:54:12,193 INFO L231 Difference]: Finished difference. Result has 71 places, 63 transitions, 426 flow [2023-11-19 07:54:12,193 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=369, PETRI_DIFFERENCE_MINUEND_FLOW=336, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=426, PETRI_PLACES=71, PETRI_TRANSITIONS=63} [2023-11-19 07:54:12,194 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 29 predicate places. [2023-11-19 07:54:12,194 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 63 transitions, 426 flow [2023-11-19 07:54:12,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 170.6) internal successors, (853), 5 states have internal predecessors, (853), 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 07:54:12,195 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:54:12,196 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:54:12,222 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce560e5a-3a59-4871-9919-5cfa5cadb237/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 07:54:12,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce560e5a-3a59-4871-9919-5cfa5cadb237/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:54:12,417 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-19 07:54:12,418 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:54:12,418 INFO L85 PathProgramCache]: Analyzing trace with hash 727500608, now seen corresponding path program 1 times [2023-11-19 07:54:12,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:54:12,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214997902] [2023-11-19 07:54:12,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:12,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:54:12,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:54:12,634 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 07:54:12,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:54:12,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214997902] [2023-11-19 07:54:12,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214997902] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:54:12,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [911663427] [2023-11-19 07:54:12,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:12,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:54:12,636 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce560e5a-3a59-4871-9919-5cfa5cadb237/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:54:12,637 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce560e5a-3a59-4871-9919-5cfa5cadb237/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:54:12,654 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce560e5a-3a59-4871-9919-5cfa5cadb237/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 07:54:12,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:54:12,760 INFO L262 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 07:54:12,762 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:54:12,805 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 07:54:12,806 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:54:12,866 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 07:54:12,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [911663427] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:54:12,867 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:54:12,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3, 3] total 8 [2023-11-19 07:54:12,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222794585] [2023-11-19 07:54:12,867 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:54:12,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-19 07:54:12,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:54:12,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-19 07:54:12,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2023-11-19 07:54:13,022 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 369 [2023-11-19 07:54:13,025 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 63 transitions, 426 flow. Second operand has 10 states, 10 states have (on average 165.0) internal successors, (1650), 10 states have internal predecessors, (1650), 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 07:54:13,025 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:54:13,026 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 369 [2023-11-19 07:54:13,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:54:14,034 INFO L124 PetriNetUnfolderBase]: 3021/5610 cut-off events. [2023-11-19 07:54:14,034 INFO L125 PetriNetUnfolderBase]: For 7809/7809 co-relation queries the response was YES. [2023-11-19 07:54:14,050 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17138 conditions, 5610 events. 3021/5610 cut-off events. For 7809/7809 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 31083 event pairs, 818 based on Foata normal form. 88/5420 useless extension candidates. Maximal degree in co-relation 12988. Up to 2664 conditions per place. [2023-11-19 07:54:14,075 INFO L140 encePairwiseOnDemand]: 358/369 looper letters, 138 selfloop transitions, 35 changer transitions 0/174 dead transitions. [2023-11-19 07:54:14,075 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 174 transitions, 1329 flow [2023-11-19 07:54:14,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-19 07:54:14,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-19 07:54:14,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1593 transitions. [2023-11-19 07:54:14,082 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4796747967479675 [2023-11-19 07:54:14,082 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1593 transitions. [2023-11-19 07:54:14,083 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1593 transitions. [2023-11-19 07:54:14,084 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:54:14,084 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1593 transitions. [2023-11-19 07:54:14,089 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 177.0) internal successors, (1593), 9 states have internal predecessors, (1593), 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 07:54:14,096 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 369.0) internal successors, (3690), 10 states have internal predecessors, (3690), 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 07:54:14,098 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 369.0) internal successors, (3690), 10 states have internal predecessors, (3690), 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 07:54:14,098 INFO L175 Difference]: Start difference. First operand has 71 places, 63 transitions, 426 flow. Second operand 9 states and 1593 transitions. [2023-11-19 07:54:14,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 174 transitions, 1329 flow [2023-11-19 07:54:14,127 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 174 transitions, 1299 flow, removed 15 selfloop flow, removed 0 redundant places. [2023-11-19 07:54:14,130 INFO L231 Difference]: Finished difference. Result has 86 places, 89 transitions, 846 flow [2023-11-19 07:54:14,131 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=369, PETRI_DIFFERENCE_MINUEND_FLOW=416, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=846, PETRI_PLACES=86, PETRI_TRANSITIONS=89} [2023-11-19 07:54:14,131 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 44 predicate places. [2023-11-19 07:54:14,131 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 89 transitions, 846 flow [2023-11-19 07:54:14,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 165.0) internal successors, (1650), 10 states have internal predecessors, (1650), 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 07:54:14,133 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:54:14,133 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-11-19 07:54:14,159 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce560e5a-3a59-4871-9919-5cfa5cadb237/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-19 07:54:14,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce560e5a-3a59-4871-9919-5cfa5cadb237/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-19 07:54:14,353 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-19 07:54:14,354 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:54:14,354 INFO L85 PathProgramCache]: Analyzing trace with hash -311416, now seen corresponding path program 1 times [2023-11-19 07:54:14,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:54:14,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12684153] [2023-11-19 07:54:14,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:14,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:54:14,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:54:14,422 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:54:14,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:54:14,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12684153] [2023-11-19 07:54:14,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12684153] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:54:14,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:54:14,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:54:14,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705038292] [2023-11-19 07:54:14,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:54:14,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:54:14,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:54:14,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:54:14,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:54:14,434 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 369 [2023-11-19 07:54:14,435 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 89 transitions, 846 flow. Second operand has 3 states, 3 states have (on average 179.33333333333334) internal successors, (538), 3 states have internal predecessors, (538), 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 07:54:14,435 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:54:14,435 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 369 [2023-11-19 07:54:14,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:54:15,196 INFO L124 PetriNetUnfolderBase]: 2753/5052 cut-off events. [2023-11-19 07:54:15,196 INFO L125 PetriNetUnfolderBase]: For 10037/10041 co-relation queries the response was YES. [2023-11-19 07:54:15,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16579 conditions, 5052 events. 2753/5052 cut-off events. For 10037/10041 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 27593 event pairs, 675 based on Foata normal form. 4/4862 useless extension candidates. Maximal degree in co-relation 15904. Up to 4786 conditions per place. [2023-11-19 07:54:15,242 INFO L140 encePairwiseOnDemand]: 367/369 looper letters, 112 selfloop transitions, 1 changer transitions 0/114 dead transitions. [2023-11-19 07:54:15,242 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 114 transitions, 1224 flow [2023-11-19 07:54:15,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:54:15,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:54:15,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 573 transitions. [2023-11-19 07:54:15,245 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5176151761517616 [2023-11-19 07:54:15,245 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 573 transitions. [2023-11-19 07:54:15,245 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 573 transitions. [2023-11-19 07:54:15,246 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:54:15,246 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 573 transitions. [2023-11-19 07:54:15,247 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 191.0) internal successors, (573), 3 states have internal predecessors, (573), 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 07:54:15,250 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 369.0) internal successors, (1476), 4 states have internal predecessors, (1476), 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 07:54:15,251 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 369.0) internal successors, (1476), 4 states have internal predecessors, (1476), 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 07:54:15,251 INFO L175 Difference]: Start difference. First operand has 86 places, 89 transitions, 846 flow. Second operand 3 states and 573 transitions. [2023-11-19 07:54:15,251 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 114 transitions, 1224 flow [2023-11-19 07:54:15,287 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 114 transitions, 1152 flow, removed 36 selfloop flow, removed 0 redundant places. [2023-11-19 07:54:15,290 INFO L231 Difference]: Finished difference. Result has 87 places, 88 transitions, 771 flow [2023-11-19 07:54:15,290 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=369, PETRI_DIFFERENCE_MINUEND_FLOW=769, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=771, PETRI_PLACES=87, PETRI_TRANSITIONS=88} [2023-11-19 07:54:15,291 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 45 predicate places. [2023-11-19 07:54:15,291 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 88 transitions, 771 flow [2023-11-19 07:54:15,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 179.33333333333334) internal successors, (538), 3 states have internal predecessors, (538), 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 07:54:15,291 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:54:15,292 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-11-19 07:54:15,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-19 07:54:15,292 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-19 07:54:15,292 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:54:15,293 INFO L85 PathProgramCache]: Analyzing trace with hash -311417, now seen corresponding path program 1 times [2023-11-19 07:54:15,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:54:15,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162094587] [2023-11-19 07:54:15,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:15,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:54:15,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:54:15,365 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:54:15,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:54:15,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162094587] [2023-11-19 07:54:15,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162094587] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:54:15,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:54:15,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:54:15,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657079461] [2023-11-19 07:54:15,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:54:15,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:54:15,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:54:15,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:54:15,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:54:15,378 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 369 [2023-11-19 07:54:15,379 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 88 transitions, 771 flow. Second operand has 3 states, 3 states have (on average 178.33333333333334) internal successors, (535), 3 states have internal predecessors, (535), 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 07:54:15,379 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:54:15,379 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 369 [2023-11-19 07:54:15,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:54:16,079 INFO L124 PetriNetUnfolderBase]: 2503/4504 cut-off events. [2023-11-19 07:54:16,079 INFO L125 PetriNetUnfolderBase]: For 7891/7895 co-relation queries the response was YES. [2023-11-19 07:54:16,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14590 conditions, 4504 events. 2503/4504 cut-off events. For 7891/7895 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 23585 event pairs, 955 based on Foata normal form. 4/4398 useless extension candidates. Maximal degree in co-relation 11164. Up to 2316 conditions per place. [2023-11-19 07:54:16,120 INFO L140 encePairwiseOnDemand]: 365/369 looper letters, 109 selfloop transitions, 4 changer transitions 0/114 dead transitions. [2023-11-19 07:54:16,120 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 114 transitions, 1152 flow [2023-11-19 07:54:16,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:54:16,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:54:16,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 570 transitions. [2023-11-19 07:54:16,123 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5149051490514905 [2023-11-19 07:54:16,123 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 570 transitions. [2023-11-19 07:54:16,123 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 570 transitions. [2023-11-19 07:54:16,124 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:54:16,124 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 570 transitions. [2023-11-19 07:54:16,126 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 190.0) internal successors, (570), 3 states have internal predecessors, (570), 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 07:54:16,128 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 369.0) internal successors, (1476), 4 states have internal predecessors, (1476), 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 07:54:16,129 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 369.0) internal successors, (1476), 4 states have internal predecessors, (1476), 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 07:54:16,129 INFO L175 Difference]: Start difference. First operand has 87 places, 88 transitions, 771 flow. Second operand 3 states and 570 transitions. [2023-11-19 07:54:16,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 114 transitions, 1152 flow [2023-11-19 07:54:16,162 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 114 transitions, 1143 flow, removed 4 selfloop flow, removed 1 redundant places. [2023-11-19 07:54:16,164 INFO L231 Difference]: Finished difference. Result has 88 places, 88 transitions, 774 flow [2023-11-19 07:54:16,164 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=369, PETRI_DIFFERENCE_MINUEND_FLOW=757, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=774, PETRI_PLACES=88, PETRI_TRANSITIONS=88} [2023-11-19 07:54:16,165 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 46 predicate places. [2023-11-19 07:54:16,165 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 88 transitions, 774 flow [2023-11-19 07:54:16,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 178.33333333333334) internal successors, (535), 3 states have internal predecessors, (535), 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 07:54:16,166 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:54:16,166 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:54:16,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-19 07:54:16,166 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-19 07:54:16,167 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:54:16,167 INFO L85 PathProgramCache]: Analyzing trace with hash 1548728477, now seen corresponding path program 1 times [2023-11-19 07:54:16,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:54:16,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684544883] [2023-11-19 07:54:16,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:16,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:54:16,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:54:16,245 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-19 07:54:16,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:54:16,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684544883] [2023-11-19 07:54:16,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684544883] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:54:16,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:54:16,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:54:16,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355698004] [2023-11-19 07:54:16,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:54:16,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:54:16,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:54:16,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:54:16,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:54:16,285 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 166 out of 369 [2023-11-19 07:54:16,287 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 88 transitions, 774 flow. Second operand has 4 states, 4 states have (on average 171.75) internal successors, (687), 4 states have internal predecessors, (687), 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 07:54:16,287 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:54:16,287 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 166 of 369 [2023-11-19 07:54:16,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:54:16,909 INFO L124 PetriNetUnfolderBase]: 1825/3258 cut-off events. [2023-11-19 07:54:16,909 INFO L125 PetriNetUnfolderBase]: For 6109/6109 co-relation queries the response was YES. [2023-11-19 07:54:16,923 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10924 conditions, 3258 events. 1825/3258 cut-off events. For 6109/6109 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 15624 event pairs, 618 based on Foata normal form. 14/3192 useless extension candidates. Maximal degree in co-relation 10307. Up to 2730 conditions per place. [2023-11-19 07:54:16,938 INFO L140 encePairwiseOnDemand]: 364/369 looper letters, 87 selfloop transitions, 5 changer transitions 8/101 dead transitions. [2023-11-19 07:54:16,938 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 101 transitions, 935 flow [2023-11-19 07:54:16,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:54:16,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 07:54:16,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 726 transitions. [2023-11-19 07:54:16,942 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.491869918699187 [2023-11-19 07:54:16,942 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 726 transitions. [2023-11-19 07:54:16,942 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 726 transitions. [2023-11-19 07:54:16,943 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:54:16,943 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 726 transitions. [2023-11-19 07:54:16,946 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 181.5) internal successors, (726), 4 states have internal predecessors, (726), 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 07:54:16,950 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 369.0) internal successors, (1845), 5 states have internal predecessors, (1845), 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 07:54:16,951 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 369.0) internal successors, (1845), 5 states have internal predecessors, (1845), 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 07:54:16,951 INFO L175 Difference]: Start difference. First operand has 88 places, 88 transitions, 774 flow. Second operand 4 states and 726 transitions. [2023-11-19 07:54:16,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 101 transitions, 935 flow [2023-11-19 07:54:16,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 101 transitions, 877 flow, removed 19 selfloop flow, removed 5 redundant places. [2023-11-19 07:54:16,985 INFO L231 Difference]: Finished difference. Result has 86 places, 76 transitions, 602 flow [2023-11-19 07:54:16,985 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=369, PETRI_DIFFERENCE_MINUEND_FLOW=585, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=602, PETRI_PLACES=86, PETRI_TRANSITIONS=76} [2023-11-19 07:54:16,986 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 44 predicate places. [2023-11-19 07:54:16,986 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 76 transitions, 602 flow [2023-11-19 07:54:16,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 171.75) internal successors, (687), 4 states have internal predecessors, (687), 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 07:54:16,986 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:54:16,987 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:54:16,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-19 07:54:16,987 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-19 07:54:16,987 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:54:16,987 INFO L85 PathProgramCache]: Analyzing trace with hash 1794907869, now seen corresponding path program 2 times [2023-11-19 07:54:16,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:54:16,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970874907] [2023-11-19 07:54:16,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:16,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:54:17,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:54:17,336 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:54:17,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:54:17,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970874907] [2023-11-19 07:54:17,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970874907] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:54:17,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1606424304] [2023-11-19 07:54:17,338 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 07:54:17,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:54:17,338 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce560e5a-3a59-4871-9919-5cfa5cadb237/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:54:17,339 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce560e5a-3a59-4871-9919-5cfa5cadb237/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:54:17,372 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce560e5a-3a59-4871-9919-5cfa5cadb237/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-19 07:54:17,515 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-19 07:54:17,515 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:54:17,517 INFO L262 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-19 07:54:17,520 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:54:17,600 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-19 07:54:17,600 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:54:17,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1606424304] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:54:17,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:54:17,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 8 [2023-11-19 07:54:17,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410628172] [2023-11-19 07:54:17,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:54:17,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:54:17,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:54:17,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:54:17,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-11-19 07:54:17,670 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 369 [2023-11-19 07:54:17,671 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 76 transitions, 602 flow. Second operand has 6 states, 6 states have (on average 164.83333333333334) internal successors, (989), 6 states have internal predecessors, (989), 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 07:54:17,672 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:54:17,672 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 369 [2023-11-19 07:54:17,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:54:18,540 INFO L124 PetriNetUnfolderBase]: 2143/3802 cut-off events. [2023-11-19 07:54:18,540 INFO L125 PetriNetUnfolderBase]: For 7546/7546 co-relation queries the response was YES. [2023-11-19 07:54:18,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12473 conditions, 3802 events. 2143/3802 cut-off events. For 7546/7546 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 18543 event pairs, 649 based on Foata normal form. 44/3754 useless extension candidates. Maximal degree in co-relation 11929. Up to 2254 conditions per place. [2023-11-19 07:54:18,570 INFO L140 encePairwiseOnDemand]: 358/369 looper letters, 125 selfloop transitions, 22 changer transitions 0/148 dead transitions. [2023-11-19 07:54:18,570 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 148 transitions, 1263 flow [2023-11-19 07:54:18,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:54:18,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-19 07:54:18,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1235 transitions. [2023-11-19 07:54:18,576 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4781262098335269 [2023-11-19 07:54:18,576 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1235 transitions. [2023-11-19 07:54:18,576 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1235 transitions. [2023-11-19 07:54:18,577 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:54:18,577 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1235 transitions. [2023-11-19 07:54:18,581 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 176.42857142857142) internal successors, (1235), 7 states have internal predecessors, (1235), 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 07:54:18,587 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 369.0) internal successors, (2952), 8 states have internal predecessors, (2952), 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 07:54:18,588 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 369.0) internal successors, (2952), 8 states have internal predecessors, (2952), 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 07:54:18,588 INFO L175 Difference]: Start difference. First operand has 86 places, 76 transitions, 602 flow. Second operand 7 states and 1235 transitions. [2023-11-19 07:54:18,588 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 148 transitions, 1263 flow [2023-11-19 07:54:18,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 148 transitions, 1229 flow, removed 10 selfloop flow, removed 2 redundant places. [2023-11-19 07:54:18,616 INFO L231 Difference]: Finished difference. Result has 91 places, 89 transitions, 805 flow [2023-11-19 07:54:18,616 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=369, PETRI_DIFFERENCE_MINUEND_FLOW=580, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=805, PETRI_PLACES=91, PETRI_TRANSITIONS=89} [2023-11-19 07:54:18,617 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 49 predicate places. [2023-11-19 07:54:18,617 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 89 transitions, 805 flow [2023-11-19 07:54:18,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 164.83333333333334) internal successors, (989), 6 states have internal predecessors, (989), 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 07:54:18,618 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:54:18,618 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:54:18,644 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce560e5a-3a59-4871-9919-5cfa5cadb237/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-19 07:54:18,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce560e5a-3a59-4871-9919-5cfa5cadb237/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-19 07:54:18,839 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-19 07:54:18,839 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:54:18,839 INFO L85 PathProgramCache]: Analyzing trace with hash 1794907797, now seen corresponding path program 1 times [2023-11-19 07:54:18,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:54:18,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564527923] [2023-11-19 07:54:18,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:18,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:54:18,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:54:19,063 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:54:19,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:54:19,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564527923] [2023-11-19 07:54:19,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564527923] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:54:19,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2127005184] [2023-11-19 07:54:19,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:19,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:54:19,064 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce560e5a-3a59-4871-9919-5cfa5cadb237/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:54:19,065 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce560e5a-3a59-4871-9919-5cfa5cadb237/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:54:19,070 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce560e5a-3a59-4871-9919-5cfa5cadb237/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-19 07:54:19,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:54:19,212 INFO L262 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-19 07:54:19,214 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:54:19,261 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-19 07:54:19,262 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:54:19,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2127005184] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:54:19,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:54:19,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 7 [2023-11-19 07:54:19,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321581812] [2023-11-19 07:54:19,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:54:19,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:54:19,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:54:19,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:54:19,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-11-19 07:54:19,316 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 369 [2023-11-19 07:54:19,320 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 89 transitions, 805 flow. Second operand has 6 states, 6 states have (on average 164.83333333333334) internal successors, (989), 6 states have internal predecessors, (989), 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 07:54:19,320 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:54:19,320 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 369 [2023-11-19 07:54:19,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:54:20,139 INFO L124 PetriNetUnfolderBase]: 2655/4700 cut-off events. [2023-11-19 07:54:20,139 INFO L125 PetriNetUnfolderBase]: For 11305/11305 co-relation queries the response was YES. [2023-11-19 07:54:20,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15797 conditions, 4700 events. 2655/4700 cut-off events. For 11305/11305 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 24214 event pairs, 623 based on Foata normal form. 68/4640 useless extension candidates. Maximal degree in co-relation 15247. Up to 1970 conditions per place. [2023-11-19 07:54:20,181 INFO L140 encePairwiseOnDemand]: 358/369 looper letters, 115 selfloop transitions, 52 changer transitions 0/168 dead transitions. [2023-11-19 07:54:20,181 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 168 transitions, 1654 flow [2023-11-19 07:54:20,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:54:20,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-19 07:54:20,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1234 transitions. [2023-11-19 07:54:20,187 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47773906310491676 [2023-11-19 07:54:20,187 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1234 transitions. [2023-11-19 07:54:20,187 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1234 transitions. [2023-11-19 07:54:20,188 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:54:20,188 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1234 transitions. [2023-11-19 07:54:20,192 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 176.28571428571428) internal successors, (1234), 7 states have internal predecessors, (1234), 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 07:54:20,197 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 369.0) internal successors, (2952), 8 states have internal predecessors, (2952), 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 07:54:20,198 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 369.0) internal successors, (2952), 8 states have internal predecessors, (2952), 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 07:54:20,198 INFO L175 Difference]: Start difference. First operand has 91 places, 89 transitions, 805 flow. Second operand 7 states and 1234 transitions. [2023-11-19 07:54:20,199 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 168 transitions, 1654 flow [2023-11-19 07:54:20,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 168 transitions, 1565 flow, removed 37 selfloop flow, removed 1 redundant places. [2023-11-19 07:54:20,242 INFO L231 Difference]: Finished difference. Result has 102 places, 110 transitions, 1263 flow [2023-11-19 07:54:20,242 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=369, PETRI_DIFFERENCE_MINUEND_FLOW=746, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1263, PETRI_PLACES=102, PETRI_TRANSITIONS=110} [2023-11-19 07:54:20,243 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 60 predicate places. [2023-11-19 07:54:20,243 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 110 transitions, 1263 flow [2023-11-19 07:54:20,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 164.83333333333334) internal successors, (989), 6 states have internal predecessors, (989), 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 07:54:20,244 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:54:20,244 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1] [2023-11-19 07:54:20,269 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce560e5a-3a59-4871-9919-5cfa5cadb237/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-19 07:54:20,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce560e5a-3a59-4871-9919-5cfa5cadb237/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-19 07:54:20,461 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-19 07:54:20,461 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:54:20,461 INFO L85 PathProgramCache]: Analyzing trace with hash 979472387, now seen corresponding path program 1 times [2023-11-19 07:54:20,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:54:20,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815885381] [2023-11-19 07:54:20,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:20,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:54:20,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:54:20,895 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:54:20,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:54:20,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815885381] [2023-11-19 07:54:20,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815885381] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:54:20,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1670601148] [2023-11-19 07:54:20,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:20,896 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:54:20,896 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce560e5a-3a59-4871-9919-5cfa5cadb237/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:54:20,897 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce560e5a-3a59-4871-9919-5cfa5cadb237/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:54:20,916 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce560e5a-3a59-4871-9919-5cfa5cadb237/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-19 07:54:21,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:54:21,056 INFO L262 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-19 07:54:21,058 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:54:21,109 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:54:21,109 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:54:21,252 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:54:21,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1670601148] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:54:21,253 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:54:21,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 18 [2023-11-19 07:54:21,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615160625] [2023-11-19 07:54:21,254 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:54:21,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-19 07:54:21,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:54:21,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-19 07:54:21,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=268, Unknown=0, NotChecked=0, Total=380 [2023-11-19 07:54:21,471 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 369 [2023-11-19 07:54:21,475 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 110 transitions, 1263 flow. Second operand has 20 states, 20 states have (on average 166.6) internal successors, (3332), 20 states have internal predecessors, (3332), 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 07:54:21,475 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:54:21,475 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 369 [2023-11-19 07:54:21,475 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:54:23,019 INFO L124 PetriNetUnfolderBase]: 3610/6447 cut-off events. [2023-11-19 07:54:23,020 INFO L125 PetriNetUnfolderBase]: For 20198/20198 co-relation queries the response was YES. [2023-11-19 07:54:23,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22790 conditions, 6447 events. 3610/6447 cut-off events. For 20198/20198 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 33379 event pairs, 958 based on Foata normal form. 132/6415 useless extension candidates. Maximal degree in co-relation 21986. Up to 2787 conditions per place. [2023-11-19 07:54:23,059 INFO L140 encePairwiseOnDemand]: 357/369 looper letters, 318 selfloop transitions, 53 changer transitions 0/372 dead transitions. [2023-11-19 07:54:23,059 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 372 transitions, 3235 flow [2023-11-19 07:54:23,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-19 07:54:23,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-11-19 07:54:23,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 3720 transitions. [2023-11-19 07:54:23,081 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4800619434765776 [2023-11-19 07:54:23,081 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 3720 transitions. [2023-11-19 07:54:23,081 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 3720 transitions. [2023-11-19 07:54:23,084 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:54:23,085 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 3720 transitions. [2023-11-19 07:54:23,095 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 177.14285714285714) internal successors, (3720), 21 states have internal predecessors, (3720), 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 07:54:23,111 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 369.0) internal successors, (8118), 22 states have internal predecessors, (8118), 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 07:54:23,114 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 369.0) internal successors, (8118), 22 states have internal predecessors, (8118), 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 07:54:23,115 INFO L175 Difference]: Start difference. First operand has 102 places, 110 transitions, 1263 flow. Second operand 21 states and 3720 transitions. [2023-11-19 07:54:23,115 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 372 transitions, 3235 flow [2023-11-19 07:54:23,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 372 transitions, 3175 flow, removed 30 selfloop flow, removed 0 redundant places. [2023-11-19 07:54:23,221 INFO L231 Difference]: Finished difference. Result has 133 places, 132 transitions, 1623 flow [2023-11-19 07:54:23,222 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=369, PETRI_DIFFERENCE_MINUEND_FLOW=1189, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1623, PETRI_PLACES=133, PETRI_TRANSITIONS=132} [2023-11-19 07:54:23,222 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 91 predicate places. [2023-11-19 07:54:23,222 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 132 transitions, 1623 flow [2023-11-19 07:54:23,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 166.6) internal successors, (3332), 20 states have internal predecessors, (3332), 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 07:54:23,224 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:54:23,224 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:54:23,246 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce560e5a-3a59-4871-9919-5cfa5cadb237/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-19 07:54:23,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce560e5a-3a59-4871-9919-5cfa5cadb237/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-19 07:54:23,437 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-19 07:54:23,438 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:54:23,438 INFO L85 PathProgramCache]: Analyzing trace with hash -363548161, now seen corresponding path program 3 times [2023-11-19 07:54:23,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:54:23,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111164794] [2023-11-19 07:54:23,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:23,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:54:23,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:54:23,792 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-19 07:54:23,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:54:23,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111164794] [2023-11-19 07:54:23,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111164794] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:54:23,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1474587060] [2023-11-19 07:54:23,793 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-19 07:54:23,794 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:54:23,794 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce560e5a-3a59-4871-9919-5cfa5cadb237/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:54:23,795 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce560e5a-3a59-4871-9919-5cfa5cadb237/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:54:23,820 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce560e5a-3a59-4871-9919-5cfa5cadb237/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-19 07:54:23,953 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-19 07:54:23,954 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:54:23,955 INFO L262 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 07:54:23,958 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:54:24,012 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-19 07:54:24,012 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:54:24,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1474587060] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:54:24,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:54:24,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 12 [2023-11-19 07:54:24,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275754385] [2023-11-19 07:54:24,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:54:24,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:54:24,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:54:24,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:54:24,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2023-11-19 07:54:24,052 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 369 [2023-11-19 07:54:24,053 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 132 transitions, 1623 flow. Second operand has 5 states, 5 states have (on average 173.0) internal successors, (865), 5 states have internal predecessors, (865), 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 07:54:24,053 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:54:24,053 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 369 [2023-11-19 07:54:24,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:54:25,341 INFO L124 PetriNetUnfolderBase]: 3656/6559 cut-off events. [2023-11-19 07:54:25,341 INFO L125 PetriNetUnfolderBase]: For 22520/22520 co-relation queries the response was YES. [2023-11-19 07:54:25,403 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24897 conditions, 6559 events. 3656/6559 cut-off events. For 22520/22520 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 34560 event pairs, 1106 based on Foata normal form. 76/6465 useless extension candidates. Maximal degree in co-relation 23988. Up to 3646 conditions per place. [2023-11-19 07:54:25,432 INFO L140 encePairwiseOnDemand]: 359/369 looper letters, 110 selfloop transitions, 49 changer transitions 0/160 dead transitions. [2023-11-19 07:54:25,433 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 160 transitions, 2037 flow [2023-11-19 07:54:25,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:54:25,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:54:25,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1074 transitions. [2023-11-19 07:54:25,439 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48509485094850946 [2023-11-19 07:54:25,439 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1074 transitions. [2023-11-19 07:54:25,439 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1074 transitions. [2023-11-19 07:54:25,441 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:54:25,441 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1074 transitions. [2023-11-19 07:54:25,445 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 179.0) internal successors, (1074), 6 states have internal predecessors, (1074), 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 07:54:25,450 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 369.0) internal successors, (2583), 7 states have internal predecessors, (2583), 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 07:54:25,451 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 369.0) internal successors, (2583), 7 states have internal predecessors, (2583), 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 07:54:25,452 INFO L175 Difference]: Start difference. First operand has 133 places, 132 transitions, 1623 flow. Second operand 6 states and 1074 transitions. [2023-11-19 07:54:25,452 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 160 transitions, 2037 flow [2023-11-19 07:54:25,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 160 transitions, 1943 flow, removed 39 selfloop flow, removed 5 redundant places. [2023-11-19 07:54:25,570 INFO L231 Difference]: Finished difference. Result has 134 places, 130 transitions, 1672 flow [2023-11-19 07:54:25,571 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=369, PETRI_DIFFERENCE_MINUEND_FLOW=1376, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1672, PETRI_PLACES=134, PETRI_TRANSITIONS=130} [2023-11-19 07:54:25,571 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 92 predicate places. [2023-11-19 07:54:25,571 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 130 transitions, 1672 flow [2023-11-19 07:54:25,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 173.0) internal successors, (865), 5 states have internal predecessors, (865), 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 07:54:25,572 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:54:25,572 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:54:25,596 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce560e5a-3a59-4871-9919-5cfa5cadb237/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-19 07:54:25,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce560e5a-3a59-4871-9919-5cfa5cadb237/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-19 07:54:25,795 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-19 07:54:25,796 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:54:25,796 INFO L85 PathProgramCache]: Analyzing trace with hash 1848080151, now seen corresponding path program 1 times [2023-11-19 07:54:25,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:54:25,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258287389] [2023-11-19 07:54:25,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:25,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:54:25,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:54:26,148 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:54:26,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:54:26,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258287389] [2023-11-19 07:54:26,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258287389] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:54:26,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1714670074] [2023-11-19 07:54:26,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:26,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:54:26,149 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce560e5a-3a59-4871-9919-5cfa5cadb237/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:54:26,150 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce560e5a-3a59-4871-9919-5cfa5cadb237/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:54:26,173 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce560e5a-3a59-4871-9919-5cfa5cadb237/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-19 07:54:26,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:54:26,314 INFO L262 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-19 07:54:26,332 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:54:26,404 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:54:26,404 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:54:26,546 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:54:26,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1714670074] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:54:26,547 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:54:26,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6, 6] total 16 [2023-11-19 07:54:26,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700795120] [2023-11-19 07:54:26,548 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:54:26,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-19 07:54:26,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:54:26,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-19 07:54:26,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2023-11-19 07:54:26,826 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 369 [2023-11-19 07:54:26,830 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 130 transitions, 1672 flow. Second operand has 18 states, 18 states have (on average 157.88888888888889) internal successors, (2842), 18 states have internal predecessors, (2842), 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 07:54:26,830 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:54:26,831 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 369 [2023-11-19 07:54:26,831 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:54:28,225 INFO L124 PetriNetUnfolderBase]: 3601/6492 cut-off events. [2023-11-19 07:54:28,225 INFO L125 PetriNetUnfolderBase]: For 21755/21755 co-relation queries the response was YES. [2023-11-19 07:54:28,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24426 conditions, 6492 events. 3601/6492 cut-off events. For 21755/21755 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 34047 event pairs, 641 based on Foata normal form. 60/6382 useless extension candidates. Maximal degree in co-relation 23551. Up to 3544 conditions per place. [2023-11-19 07:54:28,294 INFO L140 encePairwiseOnDemand]: 358/369 looper letters, 89 selfloop transitions, 78 changer transitions 15/183 dead transitions. [2023-11-19 07:54:28,294 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 183 transitions, 2077 flow [2023-11-19 07:54:28,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-19 07:54:28,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-19 07:54:28,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1785 transitions. [2023-11-19 07:54:28,299 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43976348854397634 [2023-11-19 07:54:28,299 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1785 transitions. [2023-11-19 07:54:28,300 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1785 transitions. [2023-11-19 07:54:28,301 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:54:28,301 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1785 transitions. [2023-11-19 07:54:28,305 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 162.27272727272728) internal successors, (1785), 11 states have internal predecessors, (1785), 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 07:54:28,314 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 369.0) internal successors, (4428), 12 states have internal predecessors, (4428), 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 07:54:28,316 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 369.0) internal successors, (4428), 12 states have internal predecessors, (4428), 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 07:54:28,316 INFO L175 Difference]: Start difference. First operand has 134 places, 130 transitions, 1672 flow. Second operand 11 states and 1785 transitions. [2023-11-19 07:54:28,316 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 183 transitions, 2077 flow [2023-11-19 07:54:28,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 183 transitions, 1997 flow, removed 19 selfloop flow, removed 5 redundant places. [2023-11-19 07:54:28,421 INFO L231 Difference]: Finished difference. Result has 133 places, 120 transitions, 1544 flow [2023-11-19 07:54:28,421 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=369, PETRI_DIFFERENCE_MINUEND_FLOW=1377, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1544, PETRI_PLACES=133, PETRI_TRANSITIONS=120} [2023-11-19 07:54:28,422 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 91 predicate places. [2023-11-19 07:54:28,422 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 120 transitions, 1544 flow [2023-11-19 07:54:28,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 157.88888888888889) internal successors, (2842), 18 states have internal predecessors, (2842), 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 07:54:28,423 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:54:28,423 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:54:28,443 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce560e5a-3a59-4871-9919-5cfa5cadb237/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-19 07:54:28,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce560e5a-3a59-4871-9919-5cfa5cadb237/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-19 07:54:28,636 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-19 07:54:28,636 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:54:28,637 INFO L85 PathProgramCache]: Analyzing trace with hash -455207647, now seen corresponding path program 4 times [2023-11-19 07:54:28,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:54:28,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938220690] [2023-11-19 07:54:28,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:28,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:54:28,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:54:29,343 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-19 07:54:29,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:54:29,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938220690] [2023-11-19 07:54:29,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938220690] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:54:29,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1249888093] [2023-11-19 07:54:29,344 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-19 07:54:29,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:54:29,345 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce560e5a-3a59-4871-9919-5cfa5cadb237/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:54:29,346 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce560e5a-3a59-4871-9919-5cfa5cadb237/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:54:29,368 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce560e5a-3a59-4871-9919-5cfa5cadb237/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-19 07:54:29,588 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-19 07:54:29,588 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:54:29,590 INFO L262 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-19 07:54:29,600 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:54:29,676 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-19 07:54:29,677 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:54:29,829 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-19 07:54:29,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1249888093] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:54:29,830 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:54:29,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 6, 6] total 16 [2023-11-19 07:54:29,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613272769] [2023-11-19 07:54:29,830 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:54:29,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-19 07:54:29,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:54:29,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-19 07:54:29,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=229, Unknown=0, NotChecked=0, Total=306 [2023-11-19 07:54:30,144 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 369 [2023-11-19 07:54:30,147 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 120 transitions, 1544 flow. Second operand has 18 states, 18 states have (on average 155.33333333333334) internal successors, (2796), 18 states have internal predecessors, (2796), 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 07:54:30,147 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:54:30,147 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 369 [2023-11-19 07:54:30,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:54:32,244 INFO L124 PetriNetUnfolderBase]: 4592/8167 cut-off events. [2023-11-19 07:54:32,244 INFO L125 PetriNetUnfolderBase]: For 30130/30130 co-relation queries the response was YES. [2023-11-19 07:54:32,286 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32358 conditions, 8167 events. 4592/8167 cut-off events. For 30130/30130 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 44232 event pairs, 776 based on Foata normal form. 70/8065 useless extension candidates. Maximal degree in co-relation 31309. Up to 1905 conditions per place. [2023-11-19 07:54:32,306 INFO L140 encePairwiseOnDemand]: 358/369 looper letters, 237 selfloop transitions, 119 changer transitions 7/364 dead transitions. [2023-11-19 07:54:32,306 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 364 transitions, 4013 flow [2023-11-19 07:54:32,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-19 07:54:32,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-11-19 07:54:32,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 3704 transitions. [2023-11-19 07:54:32,314 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4364321904088606 [2023-11-19 07:54:32,314 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 3704 transitions. [2023-11-19 07:54:32,315 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 3704 transitions. [2023-11-19 07:54:32,317 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:54:32,317 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 3704 transitions. [2023-11-19 07:54:32,324 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 161.04347826086956) internal successors, (3704), 23 states have internal predecessors, (3704), 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 07:54:32,337 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 369.0) internal successors, (8856), 24 states have internal predecessors, (8856), 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 07:54:32,339 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 369.0) internal successors, (8856), 24 states have internal predecessors, (8856), 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 07:54:32,339 INFO L175 Difference]: Start difference. First operand has 133 places, 120 transitions, 1544 flow. Second operand 23 states and 3704 transitions. [2023-11-19 07:54:32,339 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 364 transitions, 4013 flow [2023-11-19 07:54:32,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 364 transitions, 3724 flow, removed 46 selfloop flow, removed 8 redundant places. [2023-11-19 07:54:32,447 INFO L231 Difference]: Finished difference. Result has 152 places, 181 transitions, 2611 flow [2023-11-19 07:54:32,447 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=369, PETRI_DIFFERENCE_MINUEND_FLOW=1392, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=2611, PETRI_PLACES=152, PETRI_TRANSITIONS=181} [2023-11-19 07:54:32,448 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 110 predicate places. [2023-11-19 07:54:32,448 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 181 transitions, 2611 flow [2023-11-19 07:54:32,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 155.33333333333334) internal successors, (2796), 18 states have internal predecessors, (2796), 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 07:54:32,449 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:54:32,449 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:54:32,473 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce560e5a-3a59-4871-9919-5cfa5cadb237/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-19 07:54:32,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce560e5a-3a59-4871-9919-5cfa5cadb237/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:54:32,672 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-19 07:54:32,673 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:54:32,673 INFO L85 PathProgramCache]: Analyzing trace with hash -1335557275, now seen corresponding path program 5 times [2023-11-19 07:54:32,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:54:32,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814810773] [2023-11-19 07:54:32,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:32,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:54:32,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:54:33,680 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 97 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-19 07:54:33,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:54:33,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814810773] [2023-11-19 07:54:33,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814810773] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:54:33,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1542608617] [2023-11-19 07:54:33,681 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-19 07:54:33,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:54:33,681 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce560e5a-3a59-4871-9919-5cfa5cadb237/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:54:33,682 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce560e5a-3a59-4871-9919-5cfa5cadb237/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:54:33,712 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce560e5a-3a59-4871-9919-5cfa5cadb237/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-19 07:54:33,943 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2023-11-19 07:54:33,943 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:54:33,947 INFO L262 TraceCheckSpWp]: Trace formula consists of 490 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-19 07:54:33,950 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:54:34,077 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 97 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-19 07:54:34,077 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:54:34,340 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 97 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-19 07:54:34,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1542608617] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:54:34,341 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:54:34,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 10, 10] total 27 [2023-11-19 07:54:34,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246034086] [2023-11-19 07:54:34,342 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:54:34,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-11-19 07:54:34,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:54:34,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-11-19 07:54:34,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=622, Unknown=0, NotChecked=0, Total=812 [2023-11-19 07:54:34,735 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 369 [2023-11-19 07:54:34,739 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 181 transitions, 2611 flow. Second operand has 29 states, 29 states have (on average 155.27586206896552) internal successors, (4503), 29 states have internal predecessors, (4503), 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 07:54:34,739 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:54:34,739 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 369 [2023-11-19 07:54:34,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:54:38,426 INFO L124 PetriNetUnfolderBase]: 7191/12774 cut-off events. [2023-11-19 07:54:38,426 INFO L125 PetriNetUnfolderBase]: For 65870/65870 co-relation queries the response was YES. [2023-11-19 07:54:38,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52874 conditions, 12774 events. 7191/12774 cut-off events. For 65870/65870 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 72991 event pairs, 924 based on Foata normal form. 168/12674 useless extension candidates. Maximal degree in co-relation 51546. Up to 2662 conditions per place. [2023-11-19 07:54:38,513 INFO L140 encePairwiseOnDemand]: 358/369 looper letters, 347 selfloop transitions, 231 changer transitions 11/590 dead transitions. [2023-11-19 07:54:38,513 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 590 transitions, 6859 flow [2023-11-19 07:54:38,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-11-19 07:54:38,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2023-11-19 07:54:38,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 5951 transitions. [2023-11-19 07:54:38,524 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43587489928953344 [2023-11-19 07:54:38,524 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 5951 transitions. [2023-11-19 07:54:38,524 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 5951 transitions. [2023-11-19 07:54:38,526 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:54:38,527 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 5951 transitions.