./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_24-sound_lock_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version cf1a7837 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cefe3c82-3346-4cf5-b181-494b1643bd54/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cefe3c82-3346-4cf5-b181-494b1643bd54/bin/uautomizer-verify-uTZkv6EMXl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cefe3c82-3346-4cf5-b181-494b1643bd54/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cefe3c82-3346-4cf5-b181-494b1643bd54/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_24-sound_lock_racing.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cefe3c82-3346-4cf5-b181-494b1643bd54/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cefe3c82-3346-4cf5-b181-494b1643bd54/bin/uautomizer-verify-uTZkv6EMXl --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1eea0d699fc30cae440905f5eeea19b8e9e5d0b5cc249e9ffded8d356549b279 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:30:31,461 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:30:31,532 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cefe3c82-3346-4cf5-b181-494b1643bd54/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-12 02:30:31,537 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:30:31,538 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:30:31,564 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:30:31,564 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:30:31,565 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:30:31,566 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:30:31,566 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:30:31,567 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:30:31,568 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:30:31,568 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:30:31,569 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:30:31,569 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 02:30:31,570 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:30:31,570 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:30:31,570 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:30:31,571 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:30:31,571 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 02:30:31,572 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:30:31,572 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 02:30:31,573 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-12 02:30:31,573 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 02:30:31,573 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:30:31,574 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 02:30:31,574 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:30:31,575 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:30:31,575 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:30:31,575 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:30:31,576 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:30:31,576 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:30:31,576 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:30:31,577 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 02:30:31,577 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:30:31,577 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:30:31,577 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:30:31,577 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 02:30:31,578 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:30:31,578 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:30:31,578 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:30:31,578 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_cefe3c82-3346-4cf5-b181-494b1643bd54/bin/uautomizer-verify-uTZkv6EMXl/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cefe3c82-3346-4cf5-b181-494b1643bd54/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1eea0d699fc30cae440905f5eeea19b8e9e5d0b5cc249e9ffded8d356549b279 [2023-11-12 02:30:31,834 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:30:31,855 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:30:31,858 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:30:31,859 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:30:31,860 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:30:31,861 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cefe3c82-3346-4cf5-b181-494b1643bd54/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/goblint-regression/28-race_reach_24-sound_lock_racing.i [2023-11-12 02:30:35,061 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:30:35,331 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:30:35,332 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cefe3c82-3346-4cf5-b181-494b1643bd54/sv-benchmarks/c/goblint-regression/28-race_reach_24-sound_lock_racing.i [2023-11-12 02:30:35,354 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cefe3c82-3346-4cf5-b181-494b1643bd54/bin/uautomizer-verify-uTZkv6EMXl/data/ab54794b0/08960efec9714062993fc818c134fc88/FLAG0a2b43eef [2023-11-12 02:30:35,369 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cefe3c82-3346-4cf5-b181-494b1643bd54/bin/uautomizer-verify-uTZkv6EMXl/data/ab54794b0/08960efec9714062993fc818c134fc88 [2023-11-12 02:30:35,372 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:30:35,374 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:30:35,376 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:30:35,376 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:30:35,386 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:30:35,386 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:30:35" (1/1) ... [2023-11-12 02:30:35,388 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@686131f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:30:35, skipping insertion in model container [2023-11-12 02:30:35,388 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:30:35" (1/1) ... [2023-11-12 02:30:35,454 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:30:35,870 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:30:35,888 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:30:35,949 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:30:35,994 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:30:35,995 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:30:35 WrapperNode [2023-11-12 02:30:35,995 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:30:35,996 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:30:35,997 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:30:35,997 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:30:36,005 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:30:35" (1/1) ... [2023-11-12 02:30:36,037 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:30:35" (1/1) ... [2023-11-12 02:30:36,063 INFO L138 Inliner]: procedures = 170, calls = 37, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 94 [2023-11-12 02:30:36,065 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:30:36,066 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:30:36,067 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:30:36,067 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:30:36,077 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:30:35" (1/1) ... [2023-11-12 02:30:36,078 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:30:35" (1/1) ... [2023-11-12 02:30:36,087 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:30:35" (1/1) ... [2023-11-12 02:30:36,088 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:30:35" (1/1) ... [2023-11-12 02:30:36,094 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:30:35" (1/1) ... [2023-11-12 02:30:36,121 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:30:35" (1/1) ... [2023-11-12 02:30:36,123 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:30:35" (1/1) ... [2023-11-12 02:30:36,125 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:30:35" (1/1) ... [2023-11-12 02:30:36,128 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:30:36,129 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:30:36,130 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:30:36,130 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:30:36,131 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:30:35" (1/1) ... [2023-11-12 02:30:36,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:30:36,155 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cefe3c82-3346-4cf5-b181-494b1643bd54/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:30:36,170 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cefe3c82-3346-4cf5-b181-494b1643bd54/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:30:36,192 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cefe3c82-3346-4cf5-b181-494b1643bd54/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:30:36,212 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 02:30:36,212 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 02:30:36,212 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-12 02:30:36,213 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:30:36,213 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 02:30:36,213 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-12 02:30:36,213 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-12 02:30:36,213 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 02:30:36,214 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 02:30:36,214 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:30:36,214 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:30:36,216 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-12 02:30:36,406 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:30:36,407 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:30:36,707 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:30:36,716 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:30:36,717 INFO L302 CfgBuilder]: Removed 10 assume(true) statements. [2023-11-12 02:30:36,719 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:30:36 BoogieIcfgContainer [2023-11-12 02:30:36,719 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:30:36,722 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:30:36,723 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:30:36,726 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:30:36,727 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:30:35" (1/3) ... [2023-11-12 02:30:36,727 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5395334b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:30:36, skipping insertion in model container [2023-11-12 02:30:36,728 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:30:35" (2/3) ... [2023-11-12 02:30:36,728 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5395334b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:30:36, skipping insertion in model container [2023-11-12 02:30:36,728 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:30:36" (3/3) ... [2023-11-12 02:30:36,730 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_24-sound_lock_racing.i [2023-11-12 02:30:36,739 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-12 02:30:36,751 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:30:36,751 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-11-12 02:30:36,751 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-12 02:30:36,816 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-11-12 02:30:36,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 127 places, 138 transitions, 283 flow [2023-11-12 02:30:36,939 INFO L124 PetriNetUnfolderBase]: 20/180 cut-off events. [2023-11-12 02:30:36,939 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-12 02:30:36,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 185 conditions, 180 events. 20/180 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 435 event pairs, 0 based on Foata normal form. 0/149 useless extension candidates. Maximal degree in co-relation 87. Up to 4 conditions per place. [2023-11-12 02:30:36,948 INFO L82 GeneralOperation]: Start removeDead. Operand has 127 places, 138 transitions, 283 flow [2023-11-12 02:30:36,955 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 125 places, 135 transitions, 277 flow [2023-11-12 02:30:36,959 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-12 02:30:36,971 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 125 places, 135 transitions, 277 flow [2023-11-12 02:30:36,974 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 125 places, 135 transitions, 277 flow [2023-11-12 02:30:36,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 125 places, 135 transitions, 277 flow [2023-11-12 02:30:37,028 INFO L124 PetriNetUnfolderBase]: 19/177 cut-off events. [2023-11-12 02:30:37,028 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-12 02:30:37,030 INFO L83 FinitePrefix]: Finished finitePrefix Result has 182 conditions, 177 events. 19/177 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 435 event pairs, 0 based on Foata normal form. 0/147 useless extension candidates. Maximal degree in co-relation 87. Up to 4 conditions per place. [2023-11-12 02:30:37,034 INFO L119 LiptonReduction]: Number of co-enabled transitions 3744 [2023-11-12 02:30:42,393 INFO L134 LiptonReduction]: Checked pairs total: 6482 [2023-11-12 02:30:42,393 INFO L136 LiptonReduction]: Total number of compositions: 129 [2023-11-12 02:30:42,423 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:30:42,431 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;@3a65e092, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:30:42,444 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2023-11-12 02:30:42,451 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-12 02:30:42,451 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2023-11-12 02:30:42,451 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:30:42,452 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:30:42,452 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-12 02:30:42,469 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-12 02:30:42,477 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:30:42,478 INFO L85 PathProgramCache]: Analyzing trace with hash 16366349, now seen corresponding path program 1 times [2023-11-12 02:30:42,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:30:42,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936435373] [2023-11-12 02:30:42,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:30:42,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:30:42,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:30:43,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:30:43,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:30:43,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936435373] [2023-11-12 02:30:43,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936435373] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:30:43,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:30:43,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:30:43,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125709378] [2023-11-12 02:30:43,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:30:43,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:30:43,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:30:43,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:30:43,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:30:43,094 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 267 [2023-11-12 02:30:43,100 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 42 transitions, 91 flow. Second operand has 3 states, 3 states have (on average 118.33333333333333) internal successors, (355), 3 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:30:43,100 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:30:43,100 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 267 [2023-11-12 02:30:43,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:30:43,274 INFO L124 PetriNetUnfolderBase]: 108/246 cut-off events. [2023-11-12 02:30:43,275 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-12 02:30:43,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 495 conditions, 246 events. 108/246 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 964 event pairs, 88 based on Foata normal form. 23/202 useless extension candidates. Maximal degree in co-relation 475. Up to 229 conditions per place. [2023-11-12 02:30:43,283 INFO L140 encePairwiseOnDemand]: 251/267 looper letters, 37 selfloop transitions, 2 changer transitions 0/41 dead transitions. [2023-11-12 02:30:43,284 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 41 transitions, 167 flow [2023-11-12 02:30:43,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:30:43,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:30:43,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 410 transitions. [2023-11-12 02:30:43,309 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5118601747815231 [2023-11-12 02:30:43,310 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 410 transitions. [2023-11-12 02:30:43,311 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 410 transitions. [2023-11-12 02:30:43,315 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:30:43,318 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 410 transitions. [2023-11-12 02:30:43,324 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 136.66666666666666) internal successors, (410), 3 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:30:43,333 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 267.0) internal successors, (1068), 4 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:30:43,334 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 267.0) internal successors, (1068), 4 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:30:43,336 INFO L175 Difference]: Start difference. First operand has 35 places, 42 transitions, 91 flow. Second operand 3 states and 410 transitions. [2023-11-12 02:30:43,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 41 transitions, 167 flow [2023-11-12 02:30:43,340 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 41 transitions, 167 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-12 02:30:43,343 INFO L231 Difference]: Finished difference. Result has 34 places, 28 transitions, 71 flow [2023-11-12 02:30:43,345 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=63, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=71, PETRI_PLACES=34, PETRI_TRANSITIONS=28} [2023-11-12 02:30:43,352 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, -1 predicate places. [2023-11-12 02:30:43,352 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 28 transitions, 71 flow [2023-11-12 02:30:43,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 118.33333333333333) internal successors, (355), 3 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:30:43,353 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:30:43,353 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-11-12 02:30:43,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 02:30:43,354 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-12 02:30:43,356 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:30:43,357 INFO L85 PathProgramCache]: Analyzing trace with hash -1451791117, now seen corresponding path program 1 times [2023-11-12 02:30:43,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:30:43,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062982405] [2023-11-12 02:30:43,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:30:43,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:30:43,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:30:43,426 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-12 02:30:43,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:30:43,467 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-12 02:30:43,467 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-12 02:30:43,469 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2023-11-12 02:30:43,471 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2023-11-12 02:30:43,471 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2023-11-12 02:30:43,472 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2023-11-12 02:30:43,472 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 13 remaining) [2023-11-12 02:30:43,472 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 13 remaining) [2023-11-12 02:30:43,473 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 13 remaining) [2023-11-12 02:30:43,473 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 13 remaining) [2023-11-12 02:30:43,473 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 13 remaining) [2023-11-12 02:30:43,473 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 13 remaining) [2023-11-12 02:30:43,474 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2023-11-12 02:30:43,474 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2023-11-12 02:30:43,474 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2023-11-12 02:30:43,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 02:30:43,475 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-12 02:30:43,478 WARN L234 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-12 02:30:43,478 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-12 02:30:43,505 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-12 02:30:43,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 160 places, 176 transitions, 368 flow [2023-11-12 02:30:43,557 INFO L124 PetriNetUnfolderBase]: 35/298 cut-off events. [2023-11-12 02:30:43,558 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-12 02:30:43,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 310 conditions, 298 events. 35/298 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 902 event pairs, 0 based on Foata normal form. 0/241 useless extension candidates. Maximal degree in co-relation 182. Up to 8 conditions per place. [2023-11-12 02:30:43,561 INFO L82 GeneralOperation]: Start removeDead. Operand has 160 places, 176 transitions, 368 flow [2023-11-12 02:30:43,564 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 160 places, 176 transitions, 368 flow [2023-11-12 02:30:43,565 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-12 02:30:43,565 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 160 places, 176 transitions, 368 flow [2023-11-12 02:30:43,565 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 160 places, 176 transitions, 368 flow [2023-11-12 02:30:43,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 160 places, 176 transitions, 368 flow [2023-11-12 02:30:43,606 INFO L124 PetriNetUnfolderBase]: 35/298 cut-off events. [2023-11-12 02:30:43,606 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-12 02:30:43,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 310 conditions, 298 events. 35/298 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 902 event pairs, 0 based on Foata normal form. 0/241 useless extension candidates. Maximal degree in co-relation 182. Up to 8 conditions per place. [2023-11-12 02:30:43,620 INFO L119 LiptonReduction]: Number of co-enabled transitions 11448 [2023-11-12 02:30:48,766 INFO L134 LiptonReduction]: Checked pairs total: 26375 [2023-11-12 02:30:48,768 INFO L136 LiptonReduction]: Total number of compositions: 147 [2023-11-12 02:30:48,771 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:30:48,781 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;@3a65e092, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:30:48,781 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2023-11-12 02:30:48,785 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-12 02:30:48,790 INFO L124 PetriNetUnfolderBase]: 4/18 cut-off events. [2023-11-12 02:30:48,791 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:30:48,791 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:30:48,791 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-12 02:30:48,792 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-12 02:30:48,792 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:30:48,792 INFO L85 PathProgramCache]: Analyzing trace with hash 851862725, now seen corresponding path program 1 times [2023-11-12 02:30:48,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:30:48,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816202851] [2023-11-12 02:30:48,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:30:48,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:30:48,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:30:48,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:30:48,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:30:48,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816202851] [2023-11-12 02:30:48,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816202851] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:30:48,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:30:48,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:30:48,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554530603] [2023-11-12 02:30:48,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:30:48,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:30:48,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:30:48,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:30:48,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:30:48,961 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 323 [2023-11-12 02:30:48,962 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 70 transitions, 156 flow. Second operand has 3 states, 3 states have (on average 148.33333333333334) internal successors, (445), 3 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:30:48,962 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:30:48,962 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 323 [2023-11-12 02:30:48,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:30:50,007 INFO L124 PetriNetUnfolderBase]: 4812/7988 cut-off events. [2023-11-12 02:30:50,008 INFO L125 PetriNetUnfolderBase]: For 74/74 co-relation queries the response was YES. [2023-11-12 02:30:50,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15714 conditions, 7988 events. 4812/7988 cut-off events. For 74/74 co-relation queries the response was YES. Maximal size of possible extension queue 350. Compared 53960 event pairs, 2262 based on Foata normal form. 978/6307 useless extension candidates. Maximal degree in co-relation 1817. Up to 7633 conditions per place. [2023-11-12 02:30:50,073 INFO L140 encePairwiseOnDemand]: 302/323 looper letters, 59 selfloop transitions, 2 changer transitions 0/68 dead transitions. [2023-11-12 02:30:50,074 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 68 transitions, 274 flow [2023-11-12 02:30:50,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:30:50,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:30:50,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 527 transitions. [2023-11-12 02:30:50,077 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.543859649122807 [2023-11-12 02:30:50,077 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 527 transitions. [2023-11-12 02:30:50,077 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 527 transitions. [2023-11-12 02:30:50,078 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:30:50,078 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 527 transitions. [2023-11-12 02:30:50,080 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 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) [2023-11-12 02:30:50,084 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 323.0) internal successors, (1292), 4 states have internal predecessors, (1292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:30:50,086 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 323.0) internal successors, (1292), 4 states have internal predecessors, (1292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:30:50,086 INFO L175 Difference]: Start difference. First operand has 57 places, 70 transitions, 156 flow. Second operand 3 states and 527 transitions. [2023-11-12 02:30:50,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 68 transitions, 274 flow [2023-11-12 02:30:50,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 68 transitions, 274 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-12 02:30:50,091 INFO L231 Difference]: Finished difference. Result has 59 places, 54 transitions, 138 flow [2023-11-12 02:30:50,092 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=323, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=138, PETRI_PLACES=59, PETRI_TRANSITIONS=54} [2023-11-12 02:30:50,094 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 2 predicate places. [2023-11-12 02:30:50,094 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 54 transitions, 138 flow [2023-11-12 02:30:50,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 148.33333333333334) internal successors, (445), 3 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:30:50,099 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:30:50,100 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:30:50,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-12 02:30:50,101 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-12 02:30:50,101 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:30:50,102 INFO L85 PathProgramCache]: Analyzing trace with hash -1690578601, now seen corresponding path program 1 times [2023-11-12 02:30:50,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:30:50,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707203185] [2023-11-12 02:30:50,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:30:50,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:30:50,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:30:50,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:30:50,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:30:50,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707203185] [2023-11-12 02:30:50,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707203185] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:30:50,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:30:50,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:30:50,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857268990] [2023-11-12 02:30:50,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:30:50,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:30:50,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:30:50,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:30:50,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:30:50,196 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 323 [2023-11-12 02:30:50,197 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 54 transitions, 138 flow. Second operand has 3 states, 3 states have (on average 149.66666666666666) internal successors, (449), 3 states have internal predecessors, (449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:30:50,197 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:30:50,197 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 323 [2023-11-12 02:30:50,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:30:51,190 INFO L124 PetriNetUnfolderBase]: 4323/7119 cut-off events. [2023-11-12 02:30:51,190 INFO L125 PetriNetUnfolderBase]: For 463/463 co-relation queries the response was YES. [2023-11-12 02:30:51,200 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14845 conditions, 7119 events. 4323/7119 cut-off events. For 463/463 co-relation queries the response was YES. Maximal size of possible extension queue 321. Compared 45172 event pairs, 1698 based on Foata normal form. 0/5078 useless extension candidates. Maximal degree in co-relation 14757. Up to 6515 conditions per place. [2023-11-12 02:30:51,251 INFO L140 encePairwiseOnDemand]: 315/323 looper letters, 64 selfloop transitions, 3 changer transitions 0/74 dead transitions. [2023-11-12 02:30:51,252 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 74 transitions, 328 flow [2023-11-12 02:30:51,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:30:51,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:30:51,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 514 transitions. [2023-11-12 02:30:51,255 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5304437564499485 [2023-11-12 02:30:51,255 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 514 transitions. [2023-11-12 02:30:51,255 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 514 transitions. [2023-11-12 02:30:51,256 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:30:51,256 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 514 transitions. [2023-11-12 02:30:51,258 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 171.33333333333334) internal successors, (514), 3 states have internal predecessors, (514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:30:51,260 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 323.0) internal successors, (1292), 4 states have internal predecessors, (1292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:30:51,261 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 323.0) internal successors, (1292), 4 states have internal predecessors, (1292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:30:51,262 INFO L175 Difference]: Start difference. First operand has 59 places, 54 transitions, 138 flow. Second operand 3 states and 514 transitions. [2023-11-12 02:30:51,262 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 74 transitions, 328 flow [2023-11-12 02:30:51,266 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 74 transitions, 325 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:30:51,269 INFO L231 Difference]: Finished difference. Result has 61 places, 56 transitions, 163 flow [2023-11-12 02:30:51,269 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=323, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=163, PETRI_PLACES=61, PETRI_TRANSITIONS=56} [2023-11-12 02:30:51,272 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 4 predicate places. [2023-11-12 02:30:51,272 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 56 transitions, 163 flow [2023-11-12 02:30:51,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 149.66666666666666) internal successors, (449), 3 states have internal predecessors, (449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:30:51,273 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:30:51,273 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-11-12 02:30:51,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-12 02:30:51,273 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-12 02:30:51,274 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:30:51,274 INFO L85 PathProgramCache]: Analyzing trace with hash -298832164, now seen corresponding path program 1 times [2023-11-12 02:30:51,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:30:51,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912462198] [2023-11-12 02:30:51,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:30:51,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:30:51,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:30:51,369 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:30:51,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:30:51,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912462198] [2023-11-12 02:30:51,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912462198] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:30:51,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:30:51,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:30:51,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928133421] [2023-11-12 02:30:51,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:30:51,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:30:51,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:30:51,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:30:51,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:30:51,391 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 323 [2023-11-12 02:30:51,392 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 56 transitions, 163 flow. Second operand has 3 states, 3 states have (on average 149.33333333333334) internal successors, (448), 3 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:30:51,392 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:30:51,397 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 323 [2023-11-12 02:30:51,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:30:52,276 INFO L124 PetriNetUnfolderBase]: 3995/6499 cut-off events. [2023-11-12 02:30:52,276 INFO L125 PetriNetUnfolderBase]: For 889/889 co-relation queries the response was YES. [2023-11-12 02:30:52,286 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14528 conditions, 6499 events. 3995/6499 cut-off events. For 889/889 co-relation queries the response was YES. Maximal size of possible extension queue 301. Compared 43486 event pairs, 1136 based on Foata normal form. 0/5120 useless extension candidates. Maximal degree in co-relation 10553. Up to 4480 conditions per place. [2023-11-12 02:30:52,317 INFO L140 encePairwiseOnDemand]: 320/323 looper letters, 74 selfloop transitions, 2 changer transitions 0/83 dead transitions. [2023-11-12 02:30:52,317 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 83 transitions, 385 flow [2023-11-12 02:30:52,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:30:52,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:30:52,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 513 transitions. [2023-11-12 02:30:52,320 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5294117647058824 [2023-11-12 02:30:52,320 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 513 transitions. [2023-11-12 02:30:52,320 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 513 transitions. [2023-11-12 02:30:52,321 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:30:52,321 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 513 transitions. [2023-11-12 02:30:52,323 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 171.0) internal successors, (513), 3 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:30:52,325 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 323.0) internal successors, (1292), 4 states have internal predecessors, (1292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:30:52,327 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 323.0) internal successors, (1292), 4 states have internal predecessors, (1292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:30:52,327 INFO L175 Difference]: Start difference. First operand has 61 places, 56 transitions, 163 flow. Second operand 3 states and 513 transitions. [2023-11-12 02:30:52,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 83 transitions, 385 flow [2023-11-12 02:30:52,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 83 transitions, 380 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:30:52,331 INFO L231 Difference]: Finished difference. Result has 61 places, 55 transitions, 160 flow [2023-11-12 02:30:52,331 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=323, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=160, PETRI_PLACES=61, PETRI_TRANSITIONS=55} [2023-11-12 02:30:52,332 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 4 predicate places. [2023-11-12 02:30:52,332 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 55 transitions, 160 flow [2023-11-12 02:30:52,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 149.33333333333334) internal successors, (448), 3 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:30:52,333 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:30:52,333 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-11-12 02:30:52,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-12 02:30:52,334 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-12 02:30:52,334 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:30:52,334 INFO L85 PathProgramCache]: Analyzing trace with hash -298832163, now seen corresponding path program 1 times [2023-11-12 02:30:52,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:30:52,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482749960] [2023-11-12 02:30:52,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:30:52,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:30:52,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:30:52,374 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-12 02:30:52,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:30:52,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482749960] [2023-11-12 02:30:52,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482749960] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:30:52,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:30:52,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:30:52,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902397379] [2023-11-12 02:30:52,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:30:52,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:30:52,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:30:52,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:30:52,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:30:52,396 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 323 [2023-11-12 02:30:52,397 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 55 transitions, 160 flow. Second operand has 3 states, 3 states have (on average 148.33333333333334) internal successors, (445), 3 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:30:52,398 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:30:52,398 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 323 [2023-11-12 02:30:52,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:30:53,216 INFO L124 PetriNetUnfolderBase]: 3667/5961 cut-off events. [2023-11-12 02:30:53,216 INFO L125 PetriNetUnfolderBase]: For 725/725 co-relation queries the response was YES. [2023-11-12 02:30:53,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13352 conditions, 5961 events. 3667/5961 cut-off events. For 725/725 co-relation queries the response was YES. Maximal size of possible extension queue 273. Compared 38505 event pairs, 639 based on Foata normal form. 0/4835 useless extension candidates. Maximal degree in co-relation 8351. Up to 5009 conditions per place. [2023-11-12 02:30:53,252 INFO L140 encePairwiseOnDemand]: 319/323 looper letters, 72 selfloop transitions, 4 changer transitions 0/83 dead transitions. [2023-11-12 02:30:53,252 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 83 transitions, 382 flow [2023-11-12 02:30:53,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:30:53,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:30:53,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 510 transitions. [2023-11-12 02:30:53,255 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5263157894736842 [2023-11-12 02:30:53,255 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 510 transitions. [2023-11-12 02:30:53,255 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 510 transitions. [2023-11-12 02:30:53,256 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:30:53,256 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 510 transitions. [2023-11-12 02:30:53,258 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 170.0) internal successors, (510), 3 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:30:53,260 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 323.0) internal successors, (1292), 4 states have internal predecessors, (1292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:30:53,262 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 323.0) internal successors, (1292), 4 states have internal predecessors, (1292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:30:53,262 INFO L175 Difference]: Start difference. First operand has 61 places, 55 transitions, 160 flow. Second operand 3 states and 510 transitions. [2023-11-12 02:30:53,262 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 83 transitions, 382 flow [2023-11-12 02:30:53,276 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 83 transitions, 378 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:30:53,278 INFO L231 Difference]: Finished difference. Result has 61 places, 55 transitions, 168 flow [2023-11-12 02:30:53,278 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=323, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=168, PETRI_PLACES=61, PETRI_TRANSITIONS=55} [2023-11-12 02:30:53,279 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 4 predicate places. [2023-11-12 02:30:53,279 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 55 transitions, 168 flow [2023-11-12 02:30:53,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 148.33333333333334) internal successors, (445), 3 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:30:53,280 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:30:53,280 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-11-12 02:30:53,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-12 02:30:53,281 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-12 02:30:53,281 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:30:53,281 INFO L85 PathProgramCache]: Analyzing trace with hash 585140923, now seen corresponding path program 1 times [2023-11-12 02:30:53,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:30:53,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411287855] [2023-11-12 02:30:53,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:30:53,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:30:53,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:30:53,300 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-12 02:30:53,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:30:53,318 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-12 02:30:53,318 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-12 02:30:53,318 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2023-11-12 02:30:53,319 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2023-11-12 02:30:53,319 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2023-11-12 02:30:53,319 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2023-11-12 02:30:53,319 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2023-11-12 02:30:53,319 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2023-11-12 02:30:53,320 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2023-11-12 02:30:53,320 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2023-11-12 02:30:53,320 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 17 remaining) [2023-11-12 02:30:53,320 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 17 remaining) [2023-11-12 02:30:53,321 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 17 remaining) [2023-11-12 02:30:53,321 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2023-11-12 02:30:53,321 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2023-11-12 02:30:53,321 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2023-11-12 02:30:53,321 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2023-11-12 02:30:53,322 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2023-11-12 02:30:53,322 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2023-11-12 02:30:53,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-12 02:30:53,322 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-11-12 02:30:53,323 WARN L234 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-12 02:30:53,323 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-12 02:30:53,350 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-12 02:30:53,354 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 193 places, 214 transitions, 455 flow [2023-11-12 02:30:53,419 INFO L124 PetriNetUnfolderBase]: 55/459 cut-off events. [2023-11-12 02:30:53,420 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-11-12 02:30:53,423 INFO L83 FinitePrefix]: Finished finitePrefix Result has 484 conditions, 459 events. 55/459 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1595 event pairs, 1 based on Foata normal form. 0/368 useless extension candidates. Maximal degree in co-relation 306. Up to 16 conditions per place. [2023-11-12 02:30:53,423 INFO L82 GeneralOperation]: Start removeDead. Operand has 193 places, 214 transitions, 455 flow [2023-11-12 02:30:53,427 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 193 places, 214 transitions, 455 flow [2023-11-12 02:30:53,428 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-12 02:30:53,428 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 193 places, 214 transitions, 455 flow [2023-11-12 02:30:53,428 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 193 places, 214 transitions, 455 flow [2023-11-12 02:30:53,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 193 places, 214 transitions, 455 flow [2023-11-12 02:30:53,490 INFO L124 PetriNetUnfolderBase]: 55/459 cut-off events. [2023-11-12 02:30:53,491 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-11-12 02:30:53,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 484 conditions, 459 events. 55/459 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1595 event pairs, 1 based on Foata normal form. 0/368 useless extension candidates. Maximal degree in co-relation 306. Up to 16 conditions per place. [2023-11-12 02:30:53,519 INFO L119 LiptonReduction]: Number of co-enabled transitions 21384 [2023-11-12 02:30:58,889 INFO L134 LiptonReduction]: Checked pairs total: 52180 [2023-11-12 02:30:58,889 INFO L136 LiptonReduction]: Total number of compositions: 172 [2023-11-12 02:30:58,891 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:30:58,892 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;@3a65e092, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:30:58,892 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2023-11-12 02:30:58,895 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-12 02:30:58,895 INFO L124 PetriNetUnfolderBase]: 3/16 cut-off events. [2023-11-12 02:30:58,895 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:30:58,896 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:30:58,896 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-12 02:30:58,896 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-12 02:30:58,896 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:30:58,897 INFO L85 PathProgramCache]: Analyzing trace with hash 1256638899, now seen corresponding path program 1 times [2023-11-12 02:30:58,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:30:58,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869788888] [2023-11-12 02:30:58,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:30:58,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:30:58,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:30:58,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:30:58,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:30:58,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869788888] [2023-11-12 02:30:58,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869788888] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:30:58,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:30:58,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:30:58,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020585024] [2023-11-12 02:30:58,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:30:58,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:30:58,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:30:58,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:30:58,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:30:58,962 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 177 out of 386 [2023-11-12 02:30:58,963 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 91 transitions, 209 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) [2023-11-12 02:30:58,963 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:30:58,963 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 177 of 386 [2023-11-12 02:30:58,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:31:10,794 INFO L124 PetriNetUnfolderBase]: 99392/142496 cut-off events. [2023-11-12 02:31:10,794 INFO L125 PetriNetUnfolderBase]: For 2429/2429 co-relation queries the response was YES. [2023-11-12 02:31:10,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 281974 conditions, 142496 events. 99392/142496 cut-off events. For 2429/2429 co-relation queries the response was YES. Maximal size of possible extension queue 3672. Compared 1064568 event pairs, 64598 based on Foata normal form. 13015/110342 useless extension candidates. Maximal degree in co-relation 24698. Up to 137955 conditions per place. [2023-11-12 02:31:11,872 INFO L140 encePairwiseOnDemand]: 360/386 looper letters, 73 selfloop transitions, 2 changer transitions 0/84 dead transitions. [2023-11-12 02:31:11,873 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 84 transitions, 345 flow [2023-11-12 02:31:11,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:31:11,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:31:11,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 636 transitions. [2023-11-12 02:31:11,876 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5492227979274611 [2023-11-12 02:31:11,876 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 636 transitions. [2023-11-12 02:31:11,876 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 636 transitions. [2023-11-12 02:31:11,877 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:31:11,877 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 636 transitions. [2023-11-12 02:31:11,879 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 212.0) internal successors, (636), 3 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:31:11,883 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 386.0) internal successors, (1544), 4 states have internal predecessors, (1544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:31:11,884 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 386.0) internal successors, (1544), 4 states have internal predecessors, (1544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:31:11,884 INFO L175 Difference]: Start difference. First operand has 74 places, 91 transitions, 209 flow. Second operand 3 states and 636 transitions. [2023-11-12 02:31:11,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 84 transitions, 345 flow [2023-11-12 02:31:11,889 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 84 transitions, 345 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-12 02:31:11,891 INFO L231 Difference]: Finished difference. Result has 76 places, 70 transitions, 181 flow [2023-11-12 02:31:11,892 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=386, PETRI_DIFFERENCE_MINUEND_FLOW=165, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=181, PETRI_PLACES=76, PETRI_TRANSITIONS=70} [2023-11-12 02:31:11,894 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 2 predicate places. [2023-11-12 02:31:11,894 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 70 transitions, 181 flow [2023-11-12 02:31:11,896 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) [2023-11-12 02:31:11,896 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:31:11,896 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:31:11,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-12 02:31:11,896 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-12 02:31:11,897 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:31:11,897 INFO L85 PathProgramCache]: Analyzing trace with hash 753984627, now seen corresponding path program 1 times [2023-11-12 02:31:11,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:31:11,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689612962] [2023-11-12 02:31:11,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:31:11,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:31:11,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:31:11,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:31:11,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:31:11,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689612962] [2023-11-12 02:31:11,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689612962] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:31:11,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:31:11,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:31:11,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422553583] [2023-11-12 02:31:11,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:31:11,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:31:11,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:31:11,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:31:11,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:31:11,972 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 176 out of 386 [2023-11-12 02:31:11,973 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 70 transitions, 181 flow. Second operand has 3 states, 3 states have (on average 178.0) internal successors, (534), 3 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:31:11,974 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:31:11,974 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 176 of 386 [2023-11-12 02:31:11,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand