./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_75-tricky_address2_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59516af3-933f-42b0-a6a1-b9121486517f/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59516af3-933f-42b0-a6a1-b9121486517f/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59516af3-933f-42b0-a6a1-b9121486517f/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59516af3-933f-42b0-a6a1-b9121486517f/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_75-tricky_address2_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59516af3-933f-42b0-a6a1-b9121486517f/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59516af3-933f-42b0-a6a1-b9121486517f/bin/uautomizer-verify-uCwYo4JHxu --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3c0354ee6107efc04d15102ecf9eef73430e38e14b70f16419cd07cd733fd0df --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:58:02,917 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:58:02,989 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59516af3-933f-42b0-a6a1-b9121486517f/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-19 07:58:02,995 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:58:02,996 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:58:03,023 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:58:03,023 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:58:03,024 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:58:03,025 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:58:03,026 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:58:03,026 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:58:03,027 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:58:03,028 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:58:03,028 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:58:03,029 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:58:03,030 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:58:03,030 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:58:03,031 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:58:03,031 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:58:03,032 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:58:03,033 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:58:03,033 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:58:03,034 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 07:58:03,035 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:58:03,035 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:58:03,036 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:58:03,036 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:58:03,037 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:58:03,037 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:58:03,038 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:58:03,038 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:58:03,039 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:58:03,039 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:58:03,040 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:58:03,040 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:58:03,041 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:58:03,041 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:58:03,042 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:58:03,042 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:58:03,042 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:58:03,043 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:58:03,043 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_59516af3-933f-42b0-a6a1-b9121486517f/bin/uautomizer-verify-uCwYo4JHxu/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59516af3-933f-42b0-a6a1-b9121486517f/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3c0354ee6107efc04d15102ecf9eef73430e38e14b70f16419cd07cd733fd0df [2023-11-19 07:58:03,320 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:58:03,350 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:58:03,352 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:58:03,354 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:58:03,354 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:58:03,356 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59516af3-933f-42b0-a6a1-b9121486517f/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/goblint-regression/28-race_reach_75-tricky_address2_racefree.i [2023-11-19 07:58:06,507 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:58:06,857 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:58:06,862 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59516af3-933f-42b0-a6a1-b9121486517f/sv-benchmarks/c/goblint-regression/28-race_reach_75-tricky_address2_racefree.i [2023-11-19 07:58:06,892 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59516af3-933f-42b0-a6a1-b9121486517f/bin/uautomizer-verify-uCwYo4JHxu/data/becebae3e/b5c5a60677ce47189fde1d39ae8c4091/FLAG5879b1f8c [2023-11-19 07:58:06,914 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59516af3-933f-42b0-a6a1-b9121486517f/bin/uautomizer-verify-uCwYo4JHxu/data/becebae3e/b5c5a60677ce47189fde1d39ae8c4091 [2023-11-19 07:58:06,921 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:58:06,924 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:58:06,927 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:58:06,927 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:58:06,933 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:58:06,936 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:58:06" (1/1) ... [2023-11-19 07:58:06,937 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a9b0147 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:06, skipping insertion in model container [2023-11-19 07:58:06,938 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:58:06" (1/1) ... [2023-11-19 07:58:07,014 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:58:07,635 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:58:07,668 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:58:07,754 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:58:07,843 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:58:07,843 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:07 WrapperNode [2023-11-19 07:58:07,844 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:58:07,845 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:58:07,845 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:58:07,845 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:58:07,853 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:07" (1/1) ... [2023-11-19 07:58:07,879 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:07" (1/1) ... [2023-11-19 07:58:07,935 INFO L138 Inliner]: procedures = 270, calls = 42, calls flagged for inlining = 7, calls inlined = 8, statements flattened = 212 [2023-11-19 07:58:07,937 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:58:07,938 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:58:07,938 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:58:07,938 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:58:07,949 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:07" (1/1) ... [2023-11-19 07:58:07,950 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:07" (1/1) ... [2023-11-19 07:58:07,965 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:07" (1/1) ... [2023-11-19 07:58:07,968 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:07" (1/1) ... [2023-11-19 07:58:07,982 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:07" (1/1) ... [2023-11-19 07:58:07,998 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:07" (1/1) ... [2023-11-19 07:58:08,003 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:07" (1/1) ... [2023-11-19 07:58:08,010 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:07" (1/1) ... [2023-11-19 07:58:08,013 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:58:08,019 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:58:08,020 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:58:08,020 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:58:08,021 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:07" (1/1) ... [2023-11-19 07:58:08,027 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:58:08,040 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59516af3-933f-42b0-a6a1-b9121486517f/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:58:08,061 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59516af3-933f-42b0-a6a1-b9121486517f/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:58:08,099 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59516af3-933f-42b0-a6a1-b9121486517f/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:58:08,110 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:58:08,110 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:58:08,110 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 07:58:08,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:58:08,111 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-19 07:58:08,111 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:58:08,111 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-19 07:58:08,112 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-19 07:58:08,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:58:08,112 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:58:08,112 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:58:08,114 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-19 07:58:08,325 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:58:08,328 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:58:08,766 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:58:08,780 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:58:08,781 INFO L302 CfgBuilder]: Removed 23 assume(true) statements. [2023-11-19 07:58:08,787 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:58:08 BoogieIcfgContainer [2023-11-19 07:58:08,787 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:58:08,790 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:58:08,790 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:58:08,793 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:58:08,793 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:58:06" (1/3) ... [2023-11-19 07:58:08,794 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70f0a440 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:58:08, skipping insertion in model container [2023-11-19 07:58:08,794 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:07" (2/3) ... [2023-11-19 07:58:08,795 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70f0a440 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:58:08, skipping insertion in model container [2023-11-19 07:58:08,795 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:58:08" (3/3) ... [2023-11-19 07:58:08,800 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_75-tricky_address2_racefree.i [2023-11-19 07:58:08,809 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 07:58:08,818 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:58:08,819 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2023-11-19 07:58:08,819 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 07:58:08,919 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-11-19 07:58:08,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 206 places, 236 transitions, 479 flow [2023-11-19 07:58:09,156 INFO L124 PetriNetUnfolderBase]: 48/323 cut-off events. [2023-11-19 07:58:09,156 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-19 07:58:09,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 328 conditions, 323 events. 48/323 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1152 event pairs, 0 based on Foata normal form. 0/254 useless extension candidates. Maximal degree in co-relation 180. Up to 8 conditions per place. [2023-11-19 07:58:09,173 INFO L82 GeneralOperation]: Start removeDead. Operand has 206 places, 236 transitions, 479 flow [2023-11-19 07:58:09,183 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 204 places, 233 transitions, 473 flow [2023-11-19 07:58:09,187 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:58:09,199 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 204 places, 233 transitions, 473 flow [2023-11-19 07:58:09,202 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 204 places, 233 transitions, 473 flow [2023-11-19 07:58:09,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 204 places, 233 transitions, 473 flow [2023-11-19 07:58:09,271 INFO L124 PetriNetUnfolderBase]: 47/320 cut-off events. [2023-11-19 07:58:09,271 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-19 07:58:09,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 325 conditions, 320 events. 47/320 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1156 event pairs, 0 based on Foata normal form. 0/252 useless extension candidates. Maximal degree in co-relation 180. Up to 8 conditions per place. [2023-11-19 07:58:09,287 INFO L119 LiptonReduction]: Number of co-enabled transitions 16296 [2023-11-19 07:58:13,408 INFO L134 LiptonReduction]: Checked pairs total: 26159 [2023-11-19 07:58:13,409 INFO L136 LiptonReduction]: Total number of compositions: 219 [2023-11-19 07:58:13,440 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:58:13,447 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;@4fd332ee, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:58:13,447 INFO L358 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2023-11-19 07:58:13,449 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:58:13,449 INFO L124 PetriNetUnfolderBase]: 1/2 cut-off events. [2023-11-19 07:58:13,450 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:58:13,450 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:58:13,450 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-19 07:58:13,451 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-19 07:58:13,456 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:58:13,456 INFO L85 PathProgramCache]: Analyzing trace with hash 29833, now seen corresponding path program 1 times [2023-11-19 07:58:13,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:58:13,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423239163] [2023-11-19 07:58:13,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:13,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:58:13,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:13,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:58:13,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:58:13,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423239163] [2023-11-19 07:58:13,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423239163] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:58:13,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:58:13,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:58:13,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354573177] [2023-11-19 07:58:13,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:58:13,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:58:13,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:58:13,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:58:13,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:58:13,924 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 197 out of 455 [2023-11-19 07:58:13,943 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 80 transitions, 167 flow. Second operand has 3 states, 3 states have (on average 197.66666666666666) internal successors, (593), 3 states have internal predecessors, (593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:13,943 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:58:13,943 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 197 of 455 [2023-11-19 07:58:13,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:58:14,193 INFO L124 PetriNetUnfolderBase]: 473/1001 cut-off events. [2023-11-19 07:58:14,194 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-19 07:58:14,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1943 conditions, 1001 events. 473/1001 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 5317 event pairs, 432 based on Foata normal form. 111/820 useless extension candidates. Maximal degree in co-relation 1874. Up to 936 conditions per place. [2023-11-19 07:58:14,203 INFO L140 encePairwiseOnDemand]: 427/455 looper letters, 49 selfloop transitions, 2 changer transitions 0/57 dead transitions. [2023-11-19 07:58:14,204 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 57 transitions, 223 flow [2023-11-19 07:58:14,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:58:14,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:58:14,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 669 transitions. [2023-11-19 07:58:14,222 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4901098901098901 [2023-11-19 07:58:14,223 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 669 transitions. [2023-11-19 07:58:14,223 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 669 transitions. [2023-11-19 07:58:14,226 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:58:14,229 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 669 transitions. [2023-11-19 07:58:14,234 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 223.0) internal successors, (669), 3 states have internal predecessors, (669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:14,242 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 455.0) internal successors, (1820), 4 states have internal predecessors, (1820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:14,243 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 455.0) internal successors, (1820), 4 states have internal predecessors, (1820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:14,246 INFO L175 Difference]: Start difference. First operand has 58 places, 80 transitions, 167 flow. Second operand 3 states and 669 transitions. [2023-11-19 07:58:14,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 57 transitions, 223 flow [2023-11-19 07:58:14,250 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 57 transitions, 223 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:58:14,253 INFO L231 Difference]: Finished difference. Result has 59 places, 57 transitions, 133 flow [2023-11-19 07:58:14,255 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=455, PETRI_DIFFERENCE_MINUEND_FLOW=119, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=133, PETRI_PLACES=59, PETRI_TRANSITIONS=57} [2023-11-19 07:58:14,259 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 1 predicate places. [2023-11-19 07:58:14,259 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 57 transitions, 133 flow [2023-11-19 07:58:14,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 197.66666666666666) internal successors, (593), 3 states have internal predecessors, (593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:14,260 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:58:14,260 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-19 07:58:14,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:58:14,261 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-19 07:58:14,261 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:58:14,262 INFO L85 PathProgramCache]: Analyzing trace with hash 926911, now seen corresponding path program 1 times [2023-11-19 07:58:14,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:58:14,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306494222] [2023-11-19 07:58:14,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:14,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:58:14,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:14,342 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:58:14,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:58:14,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306494222] [2023-11-19 07:58:14,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306494222] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:58:14,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2116676721] [2023-11-19 07:58:14,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:14,344 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:58:14,344 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59516af3-933f-42b0-a6a1-b9121486517f/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:58:14,361 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59516af3-933f-42b0-a6a1-b9121486517f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:58:14,404 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59516af3-933f-42b0-a6a1-b9121486517f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 07:58:14,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:14,479 INFO L262 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:58:14,484 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:58:14,523 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:58:14,523 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:58:14,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2116676721] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:58:14,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:58:14,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-11-19 07:58:14,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775911965] [2023-11-19 07:58:14,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:58:14,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:58:14,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:58:14,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:58:14,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:58:14,569 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 197 out of 455 [2023-11-19 07:58:14,571 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 57 transitions, 133 flow. Second operand has 4 states, 4 states have (on average 197.75) internal successors, (791), 4 states have internal predecessors, (791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:14,571 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:58:14,571 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 197 of 455 [2023-11-19 07:58:14,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:58:14,800 INFO L124 PetriNetUnfolderBase]: 473/1000 cut-off events. [2023-11-19 07:58:14,801 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-19 07:58:14,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1948 conditions, 1000 events. 473/1000 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 5341 event pairs, 432 based on Foata normal form. 0/709 useless extension candidates. Maximal degree in co-relation 1936. Up to 933 conditions per place. [2023-11-19 07:58:14,809 INFO L140 encePairwiseOnDemand]: 451/455 looper letters, 47 selfloop transitions, 3 changer transitions 0/56 dead transitions. [2023-11-19 07:58:14,810 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 56 transitions, 229 flow [2023-11-19 07:58:14,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:58:14,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 07:58:14,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 839 transitions. [2023-11-19 07:58:14,818 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.460989010989011 [2023-11-19 07:58:14,818 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 839 transitions. [2023-11-19 07:58:14,819 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 839 transitions. [2023-11-19 07:58:14,819 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:58:14,820 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 839 transitions. [2023-11-19 07:58:14,823 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 209.75) internal successors, (839), 4 states have internal predecessors, (839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:14,830 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 455.0) internal successors, (2275), 5 states have internal predecessors, (2275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:14,832 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 455.0) internal successors, (2275), 5 states have internal predecessors, (2275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:14,839 INFO L175 Difference]: Start difference. First operand has 59 places, 57 transitions, 133 flow. Second operand 4 states and 839 transitions. [2023-11-19 07:58:14,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 56 transitions, 229 flow [2023-11-19 07:58:14,842 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 56 transitions, 225 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-19 07:58:14,844 INFO L231 Difference]: Finished difference. Result has 60 places, 56 transitions, 131 flow [2023-11-19 07:58:14,844 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=455, PETRI_DIFFERENCE_MINUEND_FLOW=125, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=131, PETRI_PLACES=60, PETRI_TRANSITIONS=56} [2023-11-19 07:58:14,845 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 2 predicate places. [2023-11-19 07:58:14,846 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 56 transitions, 131 flow [2023-11-19 07:58:14,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 197.75) internal successors, (791), 4 states have internal predecessors, (791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:14,851 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:58:14,851 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-19 07:58:14,877 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59516af3-933f-42b0-a6a1-b9121486517f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 07:58:15,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59516af3-933f-42b0-a6a1-b9121486517f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-11-19 07:58:15,066 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-19 07:58:15,066 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:58:15,066 INFO L85 PathProgramCache]: Analyzing trace with hash 1846244778, now seen corresponding path program 1 times [2023-11-19 07:58:15,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:58:15,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580650975] [2023-11-19 07:58:15,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:15,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:58:15,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:15,150 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:58:15,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:58:15,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580650975] [2023-11-19 07:58:15,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580650975] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:58:15,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1174110238] [2023-11-19 07:58:15,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:15,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:58:15,152 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59516af3-933f-42b0-a6a1-b9121486517f/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:58:15,153 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59516af3-933f-42b0-a6a1-b9121486517f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:58:15,188 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59516af3-933f-42b0-a6a1-b9121486517f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 07:58:15,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:15,247 INFO L262 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:58:15,249 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:58:15,263 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:58:15,263 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:58:15,287 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:58:15,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1174110238] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:58:15,288 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:58:15,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-11-19 07:58:15,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024805467] [2023-11-19 07:58:15,289 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:58:15,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:58:15,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:58:15,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:58:15,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:58:15,323 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 455 [2023-11-19 07:58:15,325 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 56 transitions, 131 flow. Second operand has 7 states, 7 states have (on average 197.57142857142858) internal successors, (1383), 7 states have internal predecessors, (1383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:15,326 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:58:15,326 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 455 [2023-11-19 07:58:15,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:58:15,544 INFO L124 PetriNetUnfolderBase]: 473/1003 cut-off events. [2023-11-19 07:58:15,544 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-19 07:58:15,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1958 conditions, 1003 events. 473/1003 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 5341 event pairs, 432 based on Foata normal form. 3/716 useless extension candidates. Maximal degree in co-relation 1930. Up to 935 conditions per place. [2023-11-19 07:58:15,552 INFO L140 encePairwiseOnDemand]: 452/455 looper letters, 48 selfloop transitions, 5 changer transitions 0/59 dead transitions. [2023-11-19 07:58:15,553 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 59 transitions, 249 flow [2023-11-19 07:58:15,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:58:15,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:58:15,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1232 transitions. [2023-11-19 07:58:15,558 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4512820512820513 [2023-11-19 07:58:15,558 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1232 transitions. [2023-11-19 07:58:15,558 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1232 transitions. [2023-11-19 07:58:15,559 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:58:15,560 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1232 transitions. [2023-11-19 07:58:15,564 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 205.33333333333334) internal successors, (1232), 6 states have internal predecessors, (1232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:15,571 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 455.0) internal successors, (3185), 7 states have internal predecessors, (3185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:15,574 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 455.0) internal successors, (3185), 7 states have internal predecessors, (3185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:15,574 INFO L175 Difference]: Start difference. First operand has 60 places, 56 transitions, 131 flow. Second operand 6 states and 1232 transitions. [2023-11-19 07:58:15,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 59 transitions, 249 flow [2023-11-19 07:58:15,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 59 transitions, 245 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:58:15,578 INFO L231 Difference]: Finished difference. Result has 66 places, 59 transitions, 163 flow [2023-11-19 07:58:15,578 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=455, PETRI_DIFFERENCE_MINUEND_FLOW=127, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=163, PETRI_PLACES=66, PETRI_TRANSITIONS=59} [2023-11-19 07:58:15,579 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 8 predicate places. [2023-11-19 07:58:15,579 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 59 transitions, 163 flow [2023-11-19 07:58:15,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 197.57142857142858) internal successors, (1383), 7 states have internal predecessors, (1383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:15,581 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:58:15,581 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1] [2023-11-19 07:58:15,612 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59516af3-933f-42b0-a6a1-b9121486517f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 07:58:15,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59516af3-933f-42b0-a6a1-b9121486517f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-11-19 07:58:15,803 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-19 07:58:15,803 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:58:15,803 INFO L85 PathProgramCache]: Analyzing trace with hash 2004503584, now seen corresponding path program 2 times [2023-11-19 07:58:15,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:58:15,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605904139] [2023-11-19 07:58:15,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:15,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:58:15,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:15,873 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-19 07:58:15,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:58:15,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605904139] [2023-11-19 07:58:15,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605904139] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:58:15,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:58:15,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:58:15,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191328563] [2023-11-19 07:58:15,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:58:15,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:58:15,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:58:15,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:58:15,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:58:15,889 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 197 out of 455 [2023-11-19 07:58:15,890 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 59 transitions, 163 flow. Second operand has 3 states, 3 states have (on average 199.0) internal successors, (597), 3 states have internal predecessors, (597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:15,890 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:58:15,890 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 197 of 455 [2023-11-19 07:58:15,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:58:16,146 INFO L124 PetriNetUnfolderBase]: 417/904 cut-off events. [2023-11-19 07:58:16,146 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2023-11-19 07:58:16,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1778 conditions, 904 events. 417/904 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 5411 event pairs, 0 based on Foata normal form. 0/672 useless extension candidates. Maximal degree in co-relation 1743. Up to 824 conditions per place. [2023-11-19 07:58:16,154 INFO L140 encePairwiseOnDemand]: 450/455 looper letters, 68 selfloop transitions, 2 changer transitions 0/76 dead transitions. [2023-11-19 07:58:16,154 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 76 transitions, 337 flow [2023-11-19 07:58:16,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:58:16,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:58:16,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 660 transitions. [2023-11-19 07:58:16,158 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4835164835164835 [2023-11-19 07:58:16,158 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 660 transitions. [2023-11-19 07:58:16,158 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 660 transitions. [2023-11-19 07:58:16,159 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:58:16,159 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 660 transitions. [2023-11-19 07:58:16,161 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 220.0) internal successors, (660), 3 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:16,166 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 455.0) internal successors, (1820), 4 states have internal predecessors, (1820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:16,173 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 455.0) internal successors, (1820), 4 states have internal predecessors, (1820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:16,173 INFO L175 Difference]: Start difference. First operand has 66 places, 59 transitions, 163 flow. Second operand 3 states and 660 transitions. [2023-11-19 07:58:16,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 76 transitions, 337 flow [2023-11-19 07:58:16,181 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 76 transitions, 323 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-11-19 07:58:16,183 INFO L231 Difference]: Finished difference. Result has 66 places, 57 transitions, 153 flow [2023-11-19 07:58:16,183 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=455, PETRI_DIFFERENCE_MINUEND_FLOW=145, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=153, PETRI_PLACES=66, PETRI_TRANSITIONS=57} [2023-11-19 07:58:16,185 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 8 predicate places. [2023-11-19 07:58:16,185 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 57 transitions, 153 flow [2023-11-19 07:58:16,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 199.0) internal successors, (597), 3 states have internal predecessors, (597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:16,188 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:58:16,188 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1] [2023-11-19 07:58:16,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 07:58:16,189 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-19 07:58:16,189 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:58:16,189 INFO L85 PathProgramCache]: Analyzing trace with hash -2112314046, now seen corresponding path program 1 times [2023-11-19 07:58:16,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:58:16,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116833112] [2023-11-19 07:58:16,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:16,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:58:16,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:16,359 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 07:58:16,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:58:16,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116833112] [2023-11-19 07:58:16,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116833112] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:58:16,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [336746004] [2023-11-19 07:58:16,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:16,361 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:58:16,361 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59516af3-933f-42b0-a6a1-b9121486517f/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:58:16,362 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59516af3-933f-42b0-a6a1-b9121486517f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:58:16,384 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59516af3-933f-42b0-a6a1-b9121486517f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 07:58:16,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:16,458 INFO L262 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 07:58:16,460 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:58:16,482 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 07:58:16,482 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:58:16,546 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 07:58:16,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [336746004] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:58:16,547 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:58:16,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-11-19 07:58:16,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471925454] [2023-11-19 07:58:16,547 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:58:16,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-19 07:58:16,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:58:16,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-19 07:58:16,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-11-19 07:58:16,604 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 455 [2023-11-19 07:58:16,608 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 57 transitions, 153 flow. Second operand has 13 states, 13 states have (on average 197.30769230769232) internal successors, (2565), 13 states have internal predecessors, (2565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:16,609 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:58:16,609 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 455 [2023-11-19 07:58:16,609 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:58:16,922 INFO L124 PetriNetUnfolderBase]: 438/907 cut-off events. [2023-11-19 07:58:16,922 INFO L125 PetriNetUnfolderBase]: For 149/149 co-relation queries the response was YES. [2023-11-19 07:58:16,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1852 conditions, 907 events. 438/907 cut-off events. For 149/149 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 4739 event pairs, 396 based on Foata normal form. 6/698 useless extension candidates. Maximal degree in co-relation 1798. Up to 841 conditions per place. [2023-11-19 07:58:16,930 INFO L140 encePairwiseOnDemand]: 452/455 looper letters, 46 selfloop transitions, 11 changer transitions 0/63 dead transitions. [2023-11-19 07:58:16,930 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 63 transitions, 303 flow [2023-11-19 07:58:16,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-19 07:58:16,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-19 07:58:16,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2415 transitions. [2023-11-19 07:58:16,941 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4423076923076923 [2023-11-19 07:58:16,941 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2415 transitions. [2023-11-19 07:58:16,941 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2415 transitions. [2023-11-19 07:58:16,944 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:58:16,944 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2415 transitions. [2023-11-19 07:58:16,954 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 201.25) internal successors, (2415), 12 states have internal predecessors, (2415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:16,967 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 455.0) internal successors, (5915), 13 states have internal predecessors, (5915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:16,970 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 455.0) internal successors, (5915), 13 states have internal predecessors, (5915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:16,970 INFO L175 Difference]: Start difference. First operand has 66 places, 57 transitions, 153 flow. Second operand 12 states and 2415 transitions. [2023-11-19 07:58:16,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 63 transitions, 303 flow [2023-11-19 07:58:16,974 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 63 transitions, 299 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:58:16,978 INFO L231 Difference]: Finished difference. Result has 81 places, 63 transitions, 233 flow [2023-11-19 07:58:16,979 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=455, PETRI_DIFFERENCE_MINUEND_FLOW=149, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=233, PETRI_PLACES=81, PETRI_TRANSITIONS=63} [2023-11-19 07:58:16,982 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 23 predicate places. [2023-11-19 07:58:16,982 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 63 transitions, 233 flow [2023-11-19 07:58:16,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 197.30769230769232) internal successors, (2565), 13 states have internal predecessors, (2565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:16,984 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:58:16,984 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1] [2023-11-19 07:58:17,014 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59516af3-933f-42b0-a6a1-b9121486517f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 07:58:17,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59516af3-933f-42b0-a6a1-b9121486517f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:58:17,200 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-19 07:58:17,200 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:58:17,201 INFO L85 PathProgramCache]: Analyzing trace with hash 1805609218, now seen corresponding path program 2 times [2023-11-19 07:58:17,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:58:17,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928780214] [2023-11-19 07:58:17,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:17,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:58:17,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:58:17,239 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:58:17,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:58:17,283 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:58:17,283 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 07:58:17,284 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (18 of 19 remaining) [2023-11-19 07:58:17,286 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 19 remaining) [2023-11-19 07:58:17,287 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 19 remaining) [2023-11-19 07:58:17,287 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 19 remaining) [2023-11-19 07:58:17,287 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 19 remaining) [2023-11-19 07:58:17,288 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 19 remaining) [2023-11-19 07:58:17,288 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 19 remaining) [2023-11-19 07:58:17,288 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 19 remaining) [2023-11-19 07:58:17,289 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 19 remaining) [2023-11-19 07:58:17,289 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 19 remaining) [2023-11-19 07:58:17,289 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 19 remaining) [2023-11-19 07:58:17,289 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 19 remaining) [2023-11-19 07:58:17,290 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 19 remaining) [2023-11-19 07:58:17,290 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 19 remaining) [2023-11-19 07:58:17,290 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 19 remaining) [2023-11-19 07:58:17,290 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 19 remaining) [2023-11-19 07:58:17,291 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 19 remaining) [2023-11-19 07:58:17,291 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 19 remaining) [2023-11-19 07:58:17,291 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 19 remaining) [2023-11-19 07:58:17,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 07:58:17,292 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1] [2023-11-19 07:58:17,295 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-19 07:58:17,295 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-19 07:58:17,349 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-19 07:58:17,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 279 places, 322 transitions, 660 flow [2023-11-19 07:58:17,443 INFO L124 PetriNetUnfolderBase]: 80/534 cut-off events. [2023-11-19 07:58:17,444 INFO L125 PetriNetUnfolderBase]: For 6/7 co-relation queries the response was YES. [2023-11-19 07:58:17,449 INFO L83 FinitePrefix]: Finished finitePrefix Result has 546 conditions, 534 events. 80/534 cut-off events. For 6/7 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2341 event pairs, 0 based on Foata normal form. 0/418 useless extension candidates. Maximal degree in co-relation 325. Up to 12 conditions per place. [2023-11-19 07:58:17,449 INFO L82 GeneralOperation]: Start removeDead. Operand has 279 places, 322 transitions, 660 flow [2023-11-19 07:58:17,458 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 279 places, 322 transitions, 660 flow [2023-11-19 07:58:17,458 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:58:17,458 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 279 places, 322 transitions, 660 flow [2023-11-19 07:58:17,459 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 279 places, 322 transitions, 660 flow [2023-11-19 07:58:17,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 279 places, 322 transitions, 660 flow [2023-11-19 07:58:17,539 INFO L124 PetriNetUnfolderBase]: 80/534 cut-off events. [2023-11-19 07:58:17,539 INFO L125 PetriNetUnfolderBase]: For 6/7 co-relation queries the response was YES. [2023-11-19 07:58:17,545 INFO L83 FinitePrefix]: Finished finitePrefix Result has 546 conditions, 534 events. 80/534 cut-off events. For 6/7 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2341 event pairs, 0 based on Foata normal form. 0/418 useless extension candidates. Maximal degree in co-relation 325. Up to 12 conditions per place. [2023-11-19 07:58:17,578 INFO L119 LiptonReduction]: Number of co-enabled transitions 49896 [2023-11-19 07:58:22,975 INFO L134 LiptonReduction]: Checked pairs total: 81143 [2023-11-19 07:58:22,976 INFO L136 LiptonReduction]: Total number of compositions: 295 [2023-11-19 07:58:22,978 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:58:22,985 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;@4fd332ee, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:58:22,985 INFO L358 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2023-11-19 07:58:22,997 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:58:22,998 INFO L124 PetriNetUnfolderBase]: 1/2 cut-off events. [2023-11-19 07:58:22,998 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:58:22,998 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:58:22,998 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-19 07:58:22,998 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-19 07:58:22,999 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:58:22,999 INFO L85 PathProgramCache]: Analyzing trace with hash 52310, now seen corresponding path program 1 times [2023-11-19 07:58:22,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:58:22,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847621347] [2023-11-19 07:58:23,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:23,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:58:23,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:23,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:58:23,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:58:23,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847621347] [2023-11-19 07:58:23,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847621347] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:58:23,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:58:23,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:58:23,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45315756] [2023-11-19 07:58:23,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:58:23,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:58:23,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:58:23,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:58:23,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:58:23,050 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 267 out of 617 [2023-11-19 07:58:23,051 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 116 transitions, 248 flow. Second operand has 3 states, 3 states have (on average 267.6666666666667) internal successors, (803), 3 states have internal predecessors, (803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:23,052 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:58:23,052 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 267 of 617 [2023-11-19 07:58:23,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:58:26,369 INFO L124 PetriNetUnfolderBase]: 17246/27246 cut-off events. [2023-11-19 07:58:26,369 INFO L125 PetriNetUnfolderBase]: For 124/124 co-relation queries the response was YES. [2023-11-19 07:58:26,412 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52632 conditions, 27246 events. 17246/27246 cut-off events. For 124/124 co-relation queries the response was YES. Maximal size of possible extension queue 1177. Compared 204301 event pairs, 16184 based on Foata normal form. 4497/23565 useless extension candidates. Maximal degree in co-relation 24620. Up to 25288 conditions per place. [2023-11-19 07:58:26,693 INFO L140 encePairwiseOnDemand]: 580/617 looper letters, 69 selfloop transitions, 2 changer transitions 0/84 dead transitions. [2023-11-19 07:58:26,693 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 84 transitions, 326 flow [2023-11-19 07:58:26,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:58:26,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:58:26,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 908 transitions. [2023-11-19 07:58:26,697 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49054565099945974 [2023-11-19 07:58:26,697 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 908 transitions. [2023-11-19 07:58:26,698 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 908 transitions. [2023-11-19 07:58:26,698 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:58:26,699 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 908 transitions. [2023-11-19 07:58:26,701 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 302.6666666666667) internal successors, (908), 3 states have internal predecessors, (908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:26,706 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 617.0) internal successors, (2468), 4 states have internal predecessors, (2468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:26,707 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 617.0) internal successors, (2468), 4 states have internal predecessors, (2468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:26,707 INFO L175 Difference]: Start difference. First operand has 83 places, 116 transitions, 248 flow. Second operand 3 states and 908 transitions. [2023-11-19 07:58:26,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 84 transitions, 326 flow [2023-11-19 07:58:26,711 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 84 transitions, 326 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:58:26,713 INFO L231 Difference]: Finished difference. Result has 85 places, 84 transitions, 196 flow [2023-11-19 07:58:26,714 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=617, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=196, PETRI_PLACES=85, PETRI_TRANSITIONS=84} [2023-11-19 07:58:26,715 INFO L281 CegarLoopForPetriNet]: 83 programPoint places, 2 predicate places. [2023-11-19 07:58:26,715 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 84 transitions, 196 flow [2023-11-19 07:58:26,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 267.6666666666667) internal successors, (803), 3 states have internal predecessors, (803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:26,716 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:58:26,716 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-19 07:58:26,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 07:58:26,717 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-19 07:58:26,717 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:58:26,717 INFO L85 PathProgramCache]: Analyzing trace with hash 1624816, now seen corresponding path program 1 times [2023-11-19 07:58:26,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:58:26,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807678221] [2023-11-19 07:58:26,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:26,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:58:26,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:26,756 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:58:26,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:58:26,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807678221] [2023-11-19 07:58:26,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807678221] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:58:26,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:58:26,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:58:26,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869168487] [2023-11-19 07:58:26,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:58:26,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:58:26,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:58:26,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:58:26,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:58:26,770 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 267 out of 617 [2023-11-19 07:58:26,771 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 84 transitions, 196 flow. Second operand has 3 states, 3 states have (on average 268.0) internal successors, (804), 3 states have internal predecessors, (804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:26,772 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:58:26,772 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 267 of 617 [2023-11-19 07:58:26,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:58:29,103 INFO L124 PetriNetUnfolderBase]: 17246/27245 cut-off events. [2023-11-19 07:58:29,103 INFO L125 PetriNetUnfolderBase]: For 124/124 co-relation queries the response was YES. [2023-11-19 07:58:29,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52637 conditions, 27245 events. 17246/27245 cut-off events. For 124/124 co-relation queries the response was YES. Maximal size of possible extension queue 1177. Compared 204445 event pairs, 16184 based on Foata normal form. 0/19068 useless extension candidates. Maximal degree in co-relation 52624. Up to 25285 conditions per place. [2023-11-19 07:58:29,279 INFO L140 encePairwiseOnDemand]: 614/617 looper letters, 68 selfloop transitions, 2 changer transitions 0/83 dead transitions. [2023-11-19 07:58:29,280 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 83 transitions, 332 flow [2023-11-19 07:58:29,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:58:29,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:58:29,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 871 transitions. [2023-11-19 07:58:29,288 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4705564559697461 [2023-11-19 07:58:29,289 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 871 transitions. [2023-11-19 07:58:29,289 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 871 transitions. [2023-11-19 07:58:29,291 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:58:29,292 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 871 transitions. [2023-11-19 07:58:29,297 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 290.3333333333333) internal successors, (871), 3 states have internal predecessors, (871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:29,307 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 617.0) internal successors, (2468), 4 states have internal predecessors, (2468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:29,309 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 617.0) internal successors, (2468), 4 states have internal predecessors, (2468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:29,309 INFO L175 Difference]: Start difference. First operand has 85 places, 84 transitions, 196 flow. Second operand 3 states and 871 transitions. [2023-11-19 07:58:29,310 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 83 transitions, 332 flow [2023-11-19 07:58:29,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 83 transitions, 328 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-19 07:58:29,321 INFO L231 Difference]: Finished difference. Result has 85 places, 83 transitions, 192 flow [2023-11-19 07:58:29,322 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=617, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=192, PETRI_PLACES=85, PETRI_TRANSITIONS=83} [2023-11-19 07:58:29,323 INFO L281 CegarLoopForPetriNet]: 83 programPoint places, 2 predicate places. [2023-11-19 07:58:29,324 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 83 transitions, 192 flow [2023-11-19 07:58:29,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 268.0) internal successors, (804), 3 states have internal predecessors, (804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:29,325 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:58:29,325 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:58:29,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-19 07:58:29,325 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-19 07:58:29,326 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:58:29,326 INFO L85 PathProgramCache]: Analyzing trace with hash 1725381562, now seen corresponding path program 1 times [2023-11-19 07:58:29,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:58:29,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811946491] [2023-11-19 07:58:29,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:29,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:58:29,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:29,391 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:58:29,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:58:29,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811946491] [2023-11-19 07:58:29,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811946491] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:58:29,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [714545196] [2023-11-19 07:58:29,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:29,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:58:29,393 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59516af3-933f-42b0-a6a1-b9121486517f/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:58:29,394 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59516af3-933f-42b0-a6a1-b9121486517f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:58:29,418 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59516af3-933f-42b0-a6a1-b9121486517f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 07:58:29,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:29,492 INFO L262 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:58:29,493 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:58:29,503 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:58:29,503 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:58:29,518 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:58:29,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [714545196] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:58:29,519 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:58:29,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-11-19 07:58:29,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457953280] [2023-11-19 07:58:29,520 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:58:29,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:58:29,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:58:29,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:58:29,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:58:29,545 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 266 out of 617 [2023-11-19 07:58:29,549 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 83 transitions, 192 flow. Second operand has 7 states, 7 states have (on average 267.57142857142856) internal successors, (1873), 7 states have internal predecessors, (1873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:29,549 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:58:29,549 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 266 of 617 [2023-11-19 07:58:29,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:58:32,175 INFO L124 PetriNetUnfolderBase]: 17246/27248 cut-off events. [2023-11-19 07:58:32,176 INFO L125 PetriNetUnfolderBase]: For 125/125 co-relation queries the response was YES. [2023-11-19 07:58:32,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52646 conditions, 27248 events. 17246/27248 cut-off events. For 125/125 co-relation queries the response was YES. Maximal size of possible extension queue 1168. Compared 204389 event pairs, 16184 based on Foata normal form. 3/19075 useless extension candidates. Maximal degree in co-relation 52618. Up to 25287 conditions per place. [2023-11-19 07:58:32,306 INFO L140 encePairwiseOnDemand]: 614/617 looper letters, 68 selfloop transitions, 5 changer transitions 0/86 dead transitions. [2023-11-19 07:58:32,306 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 86 transitions, 350 flow [2023-11-19 07:58:32,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:58:32,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:58:32,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1672 transitions. [2023-11-19 07:58:32,316 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4516477579686656 [2023-11-19 07:58:32,316 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1672 transitions. [2023-11-19 07:58:32,317 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1672 transitions. [2023-11-19 07:58:32,318 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:58:32,318 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1672 transitions. [2023-11-19 07:58:32,324 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 278.6666666666667) internal successors, (1672), 6 states have internal predecessors, (1672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:32,332 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 617.0) internal successors, (4319), 7 states have internal predecessors, (4319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:32,334 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 617.0) internal successors, (4319), 7 states have internal predecessors, (4319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:32,334 INFO L175 Difference]: Start difference. First operand has 85 places, 83 transitions, 192 flow. Second operand 6 states and 1672 transitions. [2023-11-19 07:58:32,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 86 transitions, 350 flow [2023-11-19 07:58:32,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 86 transitions, 346 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:58:32,339 INFO L231 Difference]: Finished difference. Result has 91 places, 86 transitions, 224 flow [2023-11-19 07:58:32,340 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=617, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=224, PETRI_PLACES=91, PETRI_TRANSITIONS=86} [2023-11-19 07:58:32,341 INFO L281 CegarLoopForPetriNet]: 83 programPoint places, 8 predicate places. [2023-11-19 07:58:32,342 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 86 transitions, 224 flow [2023-11-19 07:58:32,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 267.57142857142856) internal successors, (1873), 7 states have internal predecessors, (1873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:32,343 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:58:32,343 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1] [2023-11-19 07:58:32,370 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59516af3-933f-42b0-a6a1-b9121486517f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-19 07:58:32,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59516af3-933f-42b0-a6a1-b9121486517f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:58:32,564 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-19 07:58:32,565 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:58:32,565 INFO L85 PathProgramCache]: Analyzing trace with hash -688082784, now seen corresponding path program 2 times [2023-11-19 07:58:32,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:58:32,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209124708] [2023-11-19 07:58:32,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:32,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:58:32,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:32,621 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-19 07:58:32,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:58:32,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209124708] [2023-11-19 07:58:32,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209124708] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:58:32,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:58:32,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:58:32,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588839495] [2023-11-19 07:58:32,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:58:32,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:58:32,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:58:32,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:58:32,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:58:32,637 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 267 out of 617 [2023-11-19 07:58:32,638 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 86 transitions, 224 flow. Second operand has 3 states, 3 states have (on average 269.0) internal successors, (807), 3 states have internal predecessors, (807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:32,639 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:58:32,639 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 267 of 617 [2023-11-19 07:58:32,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:58:35,416 INFO L124 PetriNetUnfolderBase]: 17367/27083 cut-off events. [2023-11-19 07:58:35,416 INFO L125 PetriNetUnfolderBase]: For 112/112 co-relation queries the response was YES. [2023-11-19 07:58:35,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52405 conditions, 27083 events. 17367/27083 cut-off events. For 112/112 co-relation queries the response was YES. Maximal size of possible extension queue 1123. Compared 200242 event pairs, 13175 based on Foata normal form. 0/18987 useless extension candidates. Maximal degree in co-relation 52370. Up to 25182 conditions per place. [2023-11-19 07:58:35,574 INFO L140 encePairwiseOnDemand]: 612/617 looper letters, 90 selfloop transitions, 2 changer transitions 0/105 dead transitions. [2023-11-19 07:58:35,575 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 105 transitions, 446 flow [2023-11-19 07:58:35,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:58:35,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:58:35,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 892 transitions. [2023-11-19 07:58:35,580 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48190167477039436 [2023-11-19 07:58:35,581 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 892 transitions. [2023-11-19 07:58:35,581 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 892 transitions. [2023-11-19 07:58:35,582 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:58:35,582 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 892 transitions. [2023-11-19 07:58:35,585 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 297.3333333333333) internal successors, (892), 3 states have internal predecessors, (892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:35,592 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 617.0) internal successors, (2468), 4 states have internal predecessors, (2468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:35,594 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 617.0) internal successors, (2468), 4 states have internal predecessors, (2468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:35,594 INFO L175 Difference]: Start difference. First operand has 91 places, 86 transitions, 224 flow. Second operand 3 states and 892 transitions. [2023-11-19 07:58:35,594 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 105 transitions, 446 flow [2023-11-19 07:58:35,596 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 105 transitions, 432 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-11-19 07:58:35,599 INFO L231 Difference]: Finished difference. Result has 93 places, 87 transitions, 226 flow [2023-11-19 07:58:35,600 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=617, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=226, PETRI_PLACES=93, PETRI_TRANSITIONS=87} [2023-11-19 07:58:35,601 INFO L281 CegarLoopForPetriNet]: 83 programPoint places, 10 predicate places. [2023-11-19 07:58:35,601 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 87 transitions, 226 flow [2023-11-19 07:58:35,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 269.0) internal successors, (807), 3 states have internal predecessors, (807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:35,620 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:58:35,620 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:58:35,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-19 07:58:35,621 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-19 07:58:35,621 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:58:35,621 INFO L85 PathProgramCache]: Analyzing trace with hash 1765353789, now seen corresponding path program 1 times [2023-11-19 07:58:35,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:58:35,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610925045] [2023-11-19 07:58:35,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:35,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:58:35,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:35,748 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:58:35,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:58:35,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610925045] [2023-11-19 07:58:35,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610925045] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:58:35,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [395552833] [2023-11-19 07:58:35,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:35,750 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:58:35,750 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59516af3-933f-42b0-a6a1-b9121486517f/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:58:35,752 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59516af3-933f-42b0-a6a1-b9121486517f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:58:35,784 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59516af3-933f-42b0-a6a1-b9121486517f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-19 07:58:35,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:35,869 INFO L262 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 07:58:35,871 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:58:35,894 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:58:35,894 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:58:35,962 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:58:35,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [395552833] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:58:35,963 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:58:35,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-11-19 07:58:35,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961825196] [2023-11-19 07:58:35,967 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:58:35,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-19 07:58:35,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:58:35,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-19 07:58:35,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-11-19 07:58:36,020 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 266 out of 617 [2023-11-19 07:58:36,024 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 87 transitions, 226 flow. Second operand has 13 states, 13 states have (on average 267.46153846153845) internal successors, (3477), 13 states have internal predecessors, (3477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:36,024 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:58:36,025 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 266 of 617 [2023-11-19 07:58:36,025 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:58:39,110 INFO L124 PetriNetUnfolderBase]: 17299/26952 cut-off events. [2023-11-19 07:58:39,110 INFO L125 PetriNetUnfolderBase]: For 869/869 co-relation queries the response was YES. [2023-11-19 07:58:39,156 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53638 conditions, 26952 events. 17299/26952 cut-off events. For 869/869 co-relation queries the response was YES. Maximal size of possible extension queue 1139. Compared 199523 event pairs, 16150 based on Foata normal form. 6/19152 useless extension candidates. Maximal degree in co-relation 53584. Up to 25198 conditions per place. [2023-11-19 07:58:39,248 INFO L140 encePairwiseOnDemand]: 614/617 looper letters, 69 selfloop transitions, 11 changer transitions 0/93 dead transitions. [2023-11-19 07:58:39,248 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 93 transitions, 422 flow [2023-11-19 07:58:39,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-19 07:58:39,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-19 07:58:39,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3277 transitions. [2023-11-19 07:58:39,261 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44259859535386276 [2023-11-19 07:58:39,261 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3277 transitions. [2023-11-19 07:58:39,261 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3277 transitions. [2023-11-19 07:58:39,268 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:58:39,269 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3277 transitions. [2023-11-19 07:58:39,277 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 273.0833333333333) internal successors, (3277), 12 states have internal predecessors, (3277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:39,289 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 617.0) internal successors, (8021), 13 states have internal predecessors, (8021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:39,291 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 617.0) internal successors, (8021), 13 states have internal predecessors, (8021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:39,292 INFO L175 Difference]: Start difference. First operand has 93 places, 87 transitions, 226 flow. Second operand 12 states and 3277 transitions. [2023-11-19 07:58:39,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 93 transitions, 422 flow [2023-11-19 07:58:39,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 93 transitions, 420 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:58:39,297 INFO L231 Difference]: Finished difference. Result has 109 places, 93 transitions, 308 flow [2023-11-19 07:58:39,297 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=617, PETRI_DIFFERENCE_MINUEND_FLOW=224, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=308, PETRI_PLACES=109, PETRI_TRANSITIONS=93} [2023-11-19 07:58:39,298 INFO L281 CegarLoopForPetriNet]: 83 programPoint places, 26 predicate places. [2023-11-19 07:58:39,298 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 93 transitions, 308 flow [2023-11-19 07:58:39,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 267.46153846153845) internal successors, (3477), 13 states have internal predecessors, (3477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:39,300 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:58:39,300 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:58:39,324 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59516af3-933f-42b0-a6a1-b9121486517f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-19 07:58:39,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59516af3-933f-42b0-a6a1-b9121486517f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:58:39,524 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-19 07:58:39,524 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:58:39,524 INFO L85 PathProgramCache]: Analyzing trace with hash -301365379, now seen corresponding path program 2 times [2023-11-19 07:58:39,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:58:39,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528737338] [2023-11-19 07:58:39,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:39,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:58:39,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:39,971 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-19 07:58:39,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:58:39,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528737338] [2023-11-19 07:58:39,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528737338] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:58:39,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:58:39,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:58:39,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767878127] [2023-11-19 07:58:39,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:58:39,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:58:39,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:58:39,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:58:39,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:58:40,312 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 257 out of 617 [2023-11-19 07:58:40,314 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 93 transitions, 308 flow. Second operand has 7 states, 7 states have (on average 258.2857142857143) internal successors, (1808), 7 states have internal predecessors, (1808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:40,314 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:58:40,314 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 257 of 617 [2023-11-19 07:58:40,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:58:44,153 INFO L124 PetriNetUnfolderBase]: 18211/29213 cut-off events. [2023-11-19 07:58:44,154 INFO L125 PetriNetUnfolderBase]: For 904/904 co-relation queries the response was YES. [2023-11-19 07:58:44,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58479 conditions, 29213 events. 18211/29213 cut-off events. For 904/904 co-relation queries the response was YES. Maximal size of possible extension queue 1317. Compared 226445 event pairs, 6708 based on Foata normal form. 0/21644 useless extension candidates. Maximal degree in co-relation 58401. Up to 21388 conditions per place. [2023-11-19 07:58:44,321 INFO L140 encePairwiseOnDemand]: 601/617 looper letters, 172 selfloop transitions, 14 changer transitions 0/199 dead transitions. [2023-11-19 07:58:44,321 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 199 transitions, 927 flow [2023-11-19 07:58:44,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:58:44,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 07:58:44,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1469 transitions. [2023-11-19 07:58:44,328 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47617504051863857 [2023-11-19 07:58:44,328 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1469 transitions. [2023-11-19 07:58:44,328 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1469 transitions. [2023-11-19 07:58:44,329 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:58:44,329 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1469 transitions. [2023-11-19 07:58:44,333 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 293.8) internal successors, (1469), 5 states have internal predecessors, (1469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:44,338 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 617.0) internal successors, (3702), 6 states have internal predecessors, (3702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:44,340 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 617.0) internal successors, (3702), 6 states have internal predecessors, (3702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:44,340 INFO L175 Difference]: Start difference. First operand has 109 places, 93 transitions, 308 flow. Second operand 5 states and 1469 transitions. [2023-11-19 07:58:44,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 199 transitions, 927 flow [2023-11-19 07:58:44,344 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 199 transitions, 879 flow, removed 19 selfloop flow, removed 5 redundant places. [2023-11-19 07:58:44,347 INFO L231 Difference]: Finished difference. Result has 112 places, 105 transitions, 376 flow [2023-11-19 07:58:44,348 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=617, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=376, PETRI_PLACES=112, PETRI_TRANSITIONS=105} [2023-11-19 07:58:44,349 INFO L281 CegarLoopForPetriNet]: 83 programPoint places, 29 predicate places. [2023-11-19 07:58:44,349 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 105 transitions, 376 flow [2023-11-19 07:58:44,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 258.2857142857143) internal successors, (1808), 7 states have internal predecessors, (1808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:44,350 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:58:44,350 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 2, 1, 1, 1, 1, 1, 1] [2023-11-19 07:58:44,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-19 07:58:44,350 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-19 07:58:44,351 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:58:44,351 INFO L85 PathProgramCache]: Analyzing trace with hash -855357098, now seen corresponding path program 1 times [2023-11-19 07:58:44,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:58:44,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587843840] [2023-11-19 07:58:44,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:44,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:58:44,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:44,406 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-11-19 07:58:44,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:58:44,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587843840] [2023-11-19 07:58:44,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587843840] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:58:44,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:58:44,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:58:44,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103958093] [2023-11-19 07:58:44,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:58:44,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:58:44,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:58:44,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:58:44,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:58:44,421 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 266 out of 617 [2023-11-19 07:58:44,422 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 105 transitions, 376 flow. Second operand has 3 states, 3 states have (on average 269.0) internal successors, (807), 3 states have internal predecessors, (807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:44,422 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:58:44,422 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 266 of 617 [2023-11-19 07:58:44,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:58:47,578 INFO L124 PetriNetUnfolderBase]: 17562/28073 cut-off events. [2023-11-19 07:58:47,578 INFO L125 PetriNetUnfolderBase]: For 5804/5804 co-relation queries the response was YES. [2023-11-19 07:58:47,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64114 conditions, 28073 events. 17562/28073 cut-off events. For 5804/5804 co-relation queries the response was YES. Maximal size of possible extension queue 1334. Compared 222025 event pairs, 3462 based on Foata normal form. 0/22474 useless extension candidates. Maximal degree in co-relation 64055. Up to 24353 conditions per place. [2023-11-19 07:58:47,798 INFO L140 encePairwiseOnDemand]: 613/617 looper letters, 125 selfloop transitions, 5 changer transitions 0/143 dead transitions. [2023-11-19 07:58:47,798 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 143 transitions, 752 flow [2023-11-19 07:58:47,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:58:47,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:58:47,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 902 transitions. [2023-11-19 07:58:47,803 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48730415991356024 [2023-11-19 07:58:47,803 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 902 transitions. [2023-11-19 07:58:47,803 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 902 transitions. [2023-11-19 07:58:47,804 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:58:47,805 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 902 transitions. [2023-11-19 07:58:47,808 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 300.6666666666667) internal successors, (902), 3 states have internal predecessors, (902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:47,812 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 617.0) internal successors, (2468), 4 states have internal predecessors, (2468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:47,812 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 617.0) internal successors, (2468), 4 states have internal predecessors, (2468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:47,813 INFO L175 Difference]: Start difference. First operand has 112 places, 105 transitions, 376 flow. Second operand 3 states and 902 transitions. [2023-11-19 07:58:47,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 143 transitions, 752 flow [2023-11-19 07:58:47,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 143 transitions, 752 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:58:47,840 INFO L231 Difference]: Finished difference. Result has 114 places, 105 transitions, 393 flow [2023-11-19 07:58:47,840 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=617, PETRI_DIFFERENCE_MINUEND_FLOW=372, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=393, PETRI_PLACES=114, PETRI_TRANSITIONS=105} [2023-11-19 07:58:47,841 INFO L281 CegarLoopForPetriNet]: 83 programPoint places, 31 predicate places. [2023-11-19 07:58:47,841 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 105 transitions, 393 flow [2023-11-19 07:58:47,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 269.0) internal successors, (807), 3 states have internal predecessors, (807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:47,842 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:58:47,842 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 2, 1, 1, 1, 1, 1, 1] [2023-11-19 07:58:47,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-19 07:58:47,843 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-19 07:58:47,843 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:58:47,843 INFO L85 PathProgramCache]: Analyzing trace with hash -855357164, now seen corresponding path program 1 times [2023-11-19 07:58:47,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:58:47,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409364005] [2023-11-19 07:58:47,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:47,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:58:47,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:47,954 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-19 07:58:47,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:58:47,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409364005] [2023-11-19 07:58:47,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409364005] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:58:47,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1293725224] [2023-11-19 07:58:47,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:47,956 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:58:47,956 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59516af3-933f-42b0-a6a1-b9121486517f/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:58:47,960 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59516af3-933f-42b0-a6a1-b9121486517f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:58:47,984 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59516af3-933f-42b0-a6a1-b9121486517f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-19 07:58:48,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:48,094 INFO L262 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:58:48,096 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:58:48,126 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-19 07:58:48,126 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:58:48,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1293725224] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:58:48,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:58:48,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-11-19 07:58:48,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749348143] [2023-11-19 07:58:48,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:58:48,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:58:48,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:58:48,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:58:48,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:58:48,145 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 267 out of 617 [2023-11-19 07:58:48,147 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 105 transitions, 393 flow. Second operand has 4 states, 4 states have (on average 269.25) internal successors, (1077), 4 states have internal predecessors, (1077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:48,147 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:58:48,147 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 267 of 617 [2023-11-19 07:58:48,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:58:51,465 INFO L124 PetriNetUnfolderBase]: 16941/27114 cut-off events. [2023-11-19 07:58:51,465 INFO L125 PetriNetUnfolderBase]: For 8961/8967 co-relation queries the response was YES. [2023-11-19 07:58:51,558 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62747 conditions, 27114 events. 16941/27114 cut-off events. For 8961/8967 co-relation queries the response was YES. Maximal size of possible extension queue 1311. Compared 214660 event pairs, 3171 based on Foata normal form. 329/22295 useless extension candidates. Maximal degree in co-relation 62687. Up to 23370 conditions per place. [2023-11-19 07:58:51,656 INFO L140 encePairwiseOnDemand]: 613/617 looper letters, 141 selfloop transitions, 3 changer transitions 0/157 dead transitions. [2023-11-19 07:58:51,657 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 157 transitions, 829 flow [2023-11-19 07:58:51,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:58:51,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 07:58:51,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1187 transitions. [2023-11-19 07:58:51,663 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48095623987034036 [2023-11-19 07:58:51,663 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1187 transitions. [2023-11-19 07:58:51,664 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1187 transitions. [2023-11-19 07:58:51,665 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:58:51,665 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1187 transitions. [2023-11-19 07:58:51,668 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 296.75) internal successors, (1187), 4 states have internal predecessors, (1187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:51,673 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 617.0) internal successors, (3085), 5 states have internal predecessors, (3085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:51,674 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 617.0) internal successors, (3085), 5 states have internal predecessors, (3085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:51,674 INFO L175 Difference]: Start difference. First operand has 114 places, 105 transitions, 393 flow. Second operand 4 states and 1187 transitions. [2023-11-19 07:58:51,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 157 transitions, 829 flow [2023-11-19 07:58:51,691 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 157 transitions, 824 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:58:51,694 INFO L231 Difference]: Finished difference. Result has 115 places, 104 transitions, 390 flow [2023-11-19 07:58:51,695 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=617, PETRI_DIFFERENCE_MINUEND_FLOW=384, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=390, PETRI_PLACES=115, PETRI_TRANSITIONS=104} [2023-11-19 07:58:51,695 INFO L281 CegarLoopForPetriNet]: 83 programPoint places, 32 predicate places. [2023-11-19 07:58:51,695 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 104 transitions, 390 flow [2023-11-19 07:58:51,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 269.25) internal successors, (1077), 4 states have internal predecessors, (1077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:51,696 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:58:51,696 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 3, 2, 2, 1, 1, 1, 1, 1] [2023-11-19 07:58:51,719 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59516af3-933f-42b0-a6a1-b9121486517f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-19 07:58:51,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59516af3-933f-42b0-a6a1-b9121486517f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-19 07:58:51,918 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-19 07:58:51,918 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:58:51,918 INFO L85 PathProgramCache]: Analyzing trace with hash -1659315828, now seen corresponding path program 1 times [2023-11-19 07:58:51,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:58:51,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132430250] [2023-11-19 07:58:51,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:51,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:58:51,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:58:51,952 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:58:51,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:58:51,998 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:58:52,002 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 07:58:52,002 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (22 of 23 remaining) [2023-11-19 07:58:52,002 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 23 remaining) [2023-11-19 07:58:52,002 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 23 remaining) [2023-11-19 07:58:52,003 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 23 remaining) [2023-11-19 07:58:52,003 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 23 remaining) [2023-11-19 07:58:52,003 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 23 remaining) [2023-11-19 07:58:52,003 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 23 remaining) [2023-11-19 07:58:52,003 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 23 remaining) [2023-11-19 07:58:52,004 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 23 remaining) [2023-11-19 07:58:52,004 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 23 remaining) [2023-11-19 07:58:52,004 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 23 remaining) [2023-11-19 07:58:52,004 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 23 remaining) [2023-11-19 07:58:52,004 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 23 remaining) [2023-11-19 07:58:52,005 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 23 remaining) [2023-11-19 07:58:52,005 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 23 remaining) [2023-11-19 07:58:52,005 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 23 remaining) [2023-11-19 07:58:52,005 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 23 remaining) [2023-11-19 07:58:52,005 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 23 remaining) [2023-11-19 07:58:52,006 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 23 remaining) [2023-11-19 07:58:52,006 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 23 remaining) [2023-11-19 07:58:52,006 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 23 remaining) [2023-11-19 07:58:52,006 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 23 remaining) [2023-11-19 07:58:52,006 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 23 remaining) [2023-11-19 07:58:52,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-19 07:58:52,007 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1] [2023-11-19 07:58:52,008 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-19 07:58:52,008 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-19 07:58:52,069 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-19 07:58:52,074 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 352 places, 408 transitions, 843 flow [2023-11-19 07:58:52,220 INFO L124 PetriNetUnfolderBase]: 117/788 cut-off events. [2023-11-19 07:58:52,220 INFO L125 PetriNetUnfolderBase]: For 19/21 co-relation queries the response was YES. [2023-11-19 07:58:52,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 813 conditions, 788 events. 117/788 cut-off events. For 19/21 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 3730 event pairs, 1 based on Foata normal form. 0/617 useless extension candidates. Maximal degree in co-relation 542. Up to 16 conditions per place. [2023-11-19 07:58:52,227 INFO L82 GeneralOperation]: Start removeDead. Operand has 352 places, 408 transitions, 843 flow [2023-11-19 07:58:52,237 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 352 places, 408 transitions, 843 flow [2023-11-19 07:58:52,237 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:58:52,237 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 352 places, 408 transitions, 843 flow [2023-11-19 07:58:52,237 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 352 places, 408 transitions, 843 flow [2023-11-19 07:58:52,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 352 places, 408 transitions, 843 flow [2023-11-19 07:58:52,380 INFO L124 PetriNetUnfolderBase]: 117/788 cut-off events. [2023-11-19 07:58:52,380 INFO L125 PetriNetUnfolderBase]: For 19/21 co-relation queries the response was YES. [2023-11-19 07:58:52,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 813 conditions, 788 events. 117/788 cut-off events. For 19/21 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 3730 event pairs, 1 based on Foata normal form. 0/617 useless extension candidates. Maximal degree in co-relation 542. Up to 16 conditions per place. [2023-11-19 07:58:52,437 INFO L119 LiptonReduction]: Number of co-enabled transitions 96768