./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_08-cond_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1ebdbaa-6f62-4073-b236-338504e3a337/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1ebdbaa-6f62-4073-b236-338504e3a337/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_c1ebdbaa-6f62-4073-b236-338504e3a337/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1ebdbaa-6f62-4073-b236-338504e3a337/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_08-cond_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1ebdbaa-6f62-4073-b236-338504e3a337/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_c1ebdbaa-6f62-4073-b236-338504e3a337/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 b4439281d7e12bca3fd2bd39ebda4196e341f38fedf1c370a96bdabb4944cfe7 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:34:18,776 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:34:18,906 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1ebdbaa-6f62-4073-b236-338504e3a337/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-19 07:34:18,915 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:34:18,916 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:34:18,958 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:34:18,958 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:34:18,959 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:34:18,960 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:34:18,965 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:34:18,967 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:34:18,967 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:34:18,968 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:34:18,969 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:34:18,970 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:34:18,970 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:34:18,971 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:34:18,971 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:34:18,972 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:34:18,972 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:34:18,973 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:34:18,973 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:34:18,974 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 07:34:18,974 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:34:18,974 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:34:18,975 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:34:18,975 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:34:18,976 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:34:18,977 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:34:18,977 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:34:18,978 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:34:18,979 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:34:18,979 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:34:18,979 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:34:18,980 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:34:18,980 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:34:18,980 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:34:18,980 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:34:18,981 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:34:18,981 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:34:18,981 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:34:18,982 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_c1ebdbaa-6f62-4073-b236-338504e3a337/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1ebdbaa-6f62-4073-b236-338504e3a337/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b4439281d7e12bca3fd2bd39ebda4196e341f38fedf1c370a96bdabb4944cfe7 [2023-11-19 07:34:19,343 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:34:19,374 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:34:19,377 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:34:19,378 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:34:19,378 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:34:19,379 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1ebdbaa-6f62-4073-b236-338504e3a337/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/goblint-regression/28-race_reach_08-cond_racefree.i [2023-11-19 07:34:22,594 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:34:22,898 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:34:22,899 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1ebdbaa-6f62-4073-b236-338504e3a337/sv-benchmarks/c/goblint-regression/28-race_reach_08-cond_racefree.i [2023-11-19 07:34:22,925 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1ebdbaa-6f62-4073-b236-338504e3a337/bin/uautomizer-verify-uCwYo4JHxu/data/913cf51e5/3f2a0f52520345b9ba0cfa52ef1f969b/FLAG898079b7a [2023-11-19 07:34:22,942 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1ebdbaa-6f62-4073-b236-338504e3a337/bin/uautomizer-verify-uCwYo4JHxu/data/913cf51e5/3f2a0f52520345b9ba0cfa52ef1f969b [2023-11-19 07:34:22,947 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:34:22,949 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:34:22,953 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:34:22,953 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:34:22,959 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:34:22,960 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:34:22" (1/1) ... [2023-11-19 07:34:22,961 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ee5df33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:34:22, skipping insertion in model container [2023-11-19 07:34:22,961 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:34:22" (1/1) ... [2023-11-19 07:34:23,056 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:34:23,609 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:34:23,623 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:34:23,679 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:34:23,753 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:34:23,753 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:34:23 WrapperNode [2023-11-19 07:34:23,753 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:34:23,755 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:34:23,755 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:34:23,756 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:34:23,765 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:34:23" (1/1) ... [2023-11-19 07:34:23,788 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:34:23" (1/1) ... [2023-11-19 07:34:23,817 INFO L138 Inliner]: procedures = 270, calls = 31, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 98 [2023-11-19 07:34:23,817 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:34:23,818 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:34:23,818 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:34:23,818 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:34:23,828 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:34:23" (1/1) ... [2023-11-19 07:34:23,829 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:34:23" (1/1) ... [2023-11-19 07:34:23,833 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:34:23" (1/1) ... [2023-11-19 07:34:23,833 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:34:23" (1/1) ... [2023-11-19 07:34:23,870 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:34:23" (1/1) ... [2023-11-19 07:34:23,875 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:34:23" (1/1) ... [2023-11-19 07:34:23,881 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:34:23" (1/1) ... [2023-11-19 07:34:23,888 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:34:23" (1/1) ... [2023-11-19 07:34:23,892 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:34:23,893 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:34:23,893 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:34:23,893 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:34:23,894 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:34:23" (1/1) ... [2023-11-19 07:34:23,903 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:34:23,916 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1ebdbaa-6f62-4073-b236-338504e3a337/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:34:23,932 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1ebdbaa-6f62-4073-b236-338504e3a337/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:34:23,966 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1ebdbaa-6f62-4073-b236-338504e3a337/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:34:23,985 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:34:23,985 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:34:23,986 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 07:34:23,986 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:34:23,986 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-19 07:34:23,986 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:34:23,986 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-19 07:34:23,987 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-19 07:34:23,987 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:34:23,987 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:34:23,987 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:34:23,989 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 07:34:24,183 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:34:24,186 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:34:24,442 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:34:24,454 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:34:24,454 INFO L302 CfgBuilder]: Removed 10 assume(true) statements. [2023-11-19 07:34:24,459 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:34:24 BoogieIcfgContainer [2023-11-19 07:34:24,459 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:34:24,462 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:34:24,462 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:34:24,466 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:34:24,466 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:34:22" (1/3) ... [2023-11-19 07:34:24,467 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30e73592 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:34:24, skipping insertion in model container [2023-11-19 07:34:24,467 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:34:23" (2/3) ... [2023-11-19 07:34:24,468 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30e73592 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:34:24, skipping insertion in model container [2023-11-19 07:34:24,468 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:34:24" (3/3) ... [2023-11-19 07:34:24,469 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_08-cond_racefree.i [2023-11-19 07:34:24,479 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 07:34:24,491 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:34:24,491 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-11-19 07:34:24,491 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 07:34:24,560 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-11-19 07:34:24,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 133 places, 146 transitions, 299 flow [2023-11-19 07:34:24,824 INFO L124 PetriNetUnfolderBase]: 25/197 cut-off events. [2023-11-19 07:34:24,825 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-19 07:34:24,833 INFO L83 FinitePrefix]: Finished finitePrefix Result has 202 conditions, 197 events. 25/197 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 505 event pairs, 0 based on Foata normal form. 0/161 useless extension candidates. Maximal degree in co-relation 96. Up to 6 conditions per place. [2023-11-19 07:34:24,833 INFO L82 GeneralOperation]: Start removeDead. Operand has 133 places, 146 transitions, 299 flow [2023-11-19 07:34:24,843 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 131 places, 143 transitions, 293 flow [2023-11-19 07:34:24,848 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:34:24,865 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 131 places, 143 transitions, 293 flow [2023-11-19 07:34:24,870 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 131 places, 143 transitions, 293 flow [2023-11-19 07:34:24,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 131 places, 143 transitions, 293 flow [2023-11-19 07:34:24,943 INFO L124 PetriNetUnfolderBase]: 24/194 cut-off events. [2023-11-19 07:34:24,943 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-19 07:34:24,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 199 conditions, 194 events. 24/194 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 497 event pairs, 0 based on Foata normal form. 0/159 useless extension candidates. Maximal degree in co-relation 96. Up to 6 conditions per place. [2023-11-19 07:34:24,952 INFO L119 LiptonReduction]: Number of co-enabled transitions 4392 [2023-11-19 07:34:29,270 INFO L134 LiptonReduction]: Checked pairs total: 7251 [2023-11-19 07:34:29,270 INFO L136 LiptonReduction]: Total number of compositions: 142 [2023-11-19 07:34:29,287 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:34:29,294 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;@554f33ef, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:34:29,295 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2023-11-19 07:34:29,299 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:34:29,299 INFO L124 PetriNetUnfolderBase]: 3/11 cut-off events. [2023-11-19 07:34:29,299 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:34:29,299 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:34:29,300 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-19 07:34:29,300 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-19 07:34:29,305 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:34:29,306 INFO L85 PathProgramCache]: Analyzing trace with hash 17505887, now seen corresponding path program 1 times [2023-11-19 07:34:29,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:34:29,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716212309] [2023-11-19 07:34:29,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:29,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:34:29,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:29,677 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 07:34:29,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:34:29,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716212309] [2023-11-19 07:34:29,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716212309] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:34:29,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:34:29,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:34:29,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075845600] [2023-11-19 07:34:29,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:34:29,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:34:29,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:34:29,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:34:29,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:34:29,745 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 288 [2023-11-19 07:34:29,748 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 41 transitions, 89 flow. Second operand has 3 states, 3 states have (on average 126.33333333333333) internal successors, (379), 3 states have internal predecessors, (379), 0 states have call successors, (0), 0 states 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 07:34:29,748 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:34:29,749 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 288 [2023-11-19 07:34:29,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:34:29,868 INFO L124 PetriNetUnfolderBase]: 133/284 cut-off events. [2023-11-19 07:34:29,868 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-19 07:34:29,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 571 conditions, 284 events. 133/284 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1152 event pairs, 99 based on Foata normal form. 11/211 useless extension candidates. Maximal degree in co-relation 551. Up to 267 conditions per place. [2023-11-19 07:34:29,872 INFO L140 encePairwiseOnDemand]: 273/288 looper letters, 39 selfloop transitions, 2 changer transitions 0/43 dead transitions. [2023-11-19 07:34:29,873 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 43 transitions, 175 flow [2023-11-19 07:34:29,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:34:29,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:34:29,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 435 transitions. [2023-11-19 07:34:29,890 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5034722222222222 [2023-11-19 07:34:29,891 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 435 transitions. [2023-11-19 07:34:29,891 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 435 transitions. [2023-11-19 07:34:29,894 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:34:29,896 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 435 transitions. [2023-11-19 07:34:29,900 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 145.0) internal successors, (435), 3 states have internal predecessors, (435), 0 states have call successors, (0), 0 states 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 07:34:29,906 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 288.0) internal successors, (1152), 4 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states 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 07:34:29,908 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 288.0) internal successors, (1152), 4 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states 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 07:34:29,910 INFO L175 Difference]: Start difference. First operand has 34 places, 41 transitions, 89 flow. Second operand 3 states and 435 transitions. [2023-11-19 07:34:29,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 43 transitions, 175 flow [2023-11-19 07:34:29,914 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 43 transitions, 175 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:34:29,916 INFO L231 Difference]: Finished difference. Result has 35 places, 30 transitions, 77 flow [2023-11-19 07:34:29,918 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=288, PETRI_DIFFERENCE_MINUEND_FLOW=67, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=77, PETRI_PLACES=35, PETRI_TRANSITIONS=30} [2023-11-19 07:34:29,922 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 1 predicate places. [2023-11-19 07:34:29,922 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 30 transitions, 77 flow [2023-11-19 07:34:29,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 126.33333333333333) internal successors, (379), 3 states have internal predecessors, (379), 0 states have call successors, (0), 0 states 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 07:34:29,923 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:34:29,923 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-19 07:34:29,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:34:29,924 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-19 07:34:29,924 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:34:29,924 INFO L85 PathProgramCache]: Analyzing trace with hash -356701912, now seen corresponding path program 1 times [2023-11-19 07:34:29,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:34:29,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017897414] [2023-11-19 07:34:29,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:29,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:34:29,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:30,070 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 07:34:30,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:34:30,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017897414] [2023-11-19 07:34:30,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017897414] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:34:30,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:34:30,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:34:30,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088457845] [2023-11-19 07:34:30,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:34:30,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:34:30,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:34:30,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:34:30,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:34:30,085 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 288 [2023-11-19 07:34:30,086 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 30 transitions, 77 flow. Second operand has 3 states, 3 states have (on average 129.66666666666666) internal successors, (389), 3 states have internal predecessors, (389), 0 states have call successors, (0), 0 states 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 07:34:30,086 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:34:30,086 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 288 [2023-11-19 07:34:30,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:34:30,210 INFO L124 PetriNetUnfolderBase]: 128/301 cut-off events. [2023-11-19 07:34:30,210 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2023-11-19 07:34:30,211 INFO L83 FinitePrefix]: Finished finitePrefix Result has 652 conditions, 301 events. 128/301 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1264 event pairs, 20 based on Foata normal form. 0/246 useless extension candidates. Maximal degree in co-relation 621. Up to 177 conditions per place. [2023-11-19 07:34:30,213 INFO L140 encePairwiseOnDemand]: 280/288 looper letters, 41 selfloop transitions, 4 changer transitions 0/47 dead transitions. [2023-11-19 07:34:30,214 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 47 transitions, 211 flow [2023-11-19 07:34:30,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:34:30,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:34:30,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 433 transitions. [2023-11-19 07:34:30,218 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5011574074074074 [2023-11-19 07:34:30,218 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 433 transitions. [2023-11-19 07:34:30,218 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 433 transitions. [2023-11-19 07:34:30,218 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:34:30,219 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 433 transitions. [2023-11-19 07:34:30,220 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 144.33333333333334) internal successors, (433), 3 states have internal predecessors, (433), 0 states have call successors, (0), 0 states 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 07:34:30,223 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 288.0) internal successors, (1152), 4 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states 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 07:34:30,224 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 288.0) internal successors, (1152), 4 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states 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 07:34:30,224 INFO L175 Difference]: Start difference. First operand has 35 places, 30 transitions, 77 flow. Second operand 3 states and 433 transitions. [2023-11-19 07:34:30,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 47 transitions, 211 flow [2023-11-19 07:34:30,226 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 47 transitions, 205 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:34:30,227 INFO L231 Difference]: Finished difference. Result has 35 places, 30 transitions, 97 flow [2023-11-19 07:34:30,227 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=288, PETRI_DIFFERENCE_MINUEND_FLOW=69, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=97, PETRI_PLACES=35, PETRI_TRANSITIONS=30} [2023-11-19 07:34:30,228 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 1 predicate places. [2023-11-19 07:34:30,228 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 30 transitions, 97 flow [2023-11-19 07:34:30,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 129.66666666666666) internal successors, (389), 3 states have internal predecessors, (389), 0 states have call successors, (0), 0 states 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 07:34:30,229 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:34:30,229 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-11-19 07:34:30,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:34:30,230 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-19 07:34:30,230 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:34:30,230 INFO L85 PathProgramCache]: Analyzing trace with hash -356670833, now seen corresponding path program 1 times [2023-11-19 07:34:30,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:34:30,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195748332] [2023-11-19 07:34:30,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:30,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:34:30,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:34:30,253 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:34:30,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:34:30,284 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:34:30,285 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 07:34:30,286 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2023-11-19 07:34:30,287 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2023-11-19 07:34:30,288 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2023-11-19 07:34:30,288 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2023-11-19 07:34:30,288 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 13 remaining) [2023-11-19 07:34:30,288 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 13 remaining) [2023-11-19 07:34:30,289 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 13 remaining) [2023-11-19 07:34:30,289 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 13 remaining) [2023-11-19 07:34:30,289 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 13 remaining) [2023-11-19 07:34:30,289 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 13 remaining) [2023-11-19 07:34:30,290 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2023-11-19 07:34:30,290 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2023-11-19 07:34:30,290 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2023-11-19 07:34:30,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 07:34:30,291 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-11-19 07:34:30,293 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-19 07:34:30,293 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-19 07:34:30,332 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-19 07:34:30,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 166 places, 184 transitions, 384 flow [2023-11-19 07:34:30,382 INFO L124 PetriNetUnfolderBase]: 43/324 cut-off events. [2023-11-19 07:34:30,382 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-19 07:34:30,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 336 conditions, 324 events. 43/324 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1006 event pairs, 0 based on Foata normal form. 0/259 useless extension candidates. Maximal degree in co-relation 199. Up to 9 conditions per place. [2023-11-19 07:34:30,385 INFO L82 GeneralOperation]: Start removeDead. Operand has 166 places, 184 transitions, 384 flow [2023-11-19 07:34:30,389 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 166 places, 184 transitions, 384 flow [2023-11-19 07:34:30,389 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:34:30,389 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 166 places, 184 transitions, 384 flow [2023-11-19 07:34:30,390 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 166 places, 184 transitions, 384 flow [2023-11-19 07:34:30,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 166 places, 184 transitions, 384 flow [2023-11-19 07:34:30,433 INFO L124 PetriNetUnfolderBase]: 43/324 cut-off events. [2023-11-19 07:34:30,433 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-19 07:34:30,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 336 conditions, 324 events. 43/324 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1006 event pairs, 0 based on Foata normal form. 0/259 useless extension candidates. Maximal degree in co-relation 199. Up to 9 conditions per place. [2023-11-19 07:34:30,448 INFO L119 LiptonReduction]: Number of co-enabled transitions 12744 [2023-11-19 07:34:34,627 INFO L134 LiptonReduction]: Checked pairs total: 29749 [2023-11-19 07:34:34,627 INFO L136 LiptonReduction]: Total number of compositions: 162 [2023-11-19 07:34:34,630 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:34:34,631 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;@554f33ef, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:34:34,632 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2023-11-19 07:34:34,635 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:34:34,635 INFO L124 PetriNetUnfolderBase]: 4/17 cut-off events. [2023-11-19 07:34:34,635 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:34:34,635 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:34:34,636 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 07:34:34,636 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-19 07:34:34,636 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:34:34,637 INFO L85 PathProgramCache]: Analyzing trace with hash 907140527, now seen corresponding path program 1 times [2023-11-19 07:34:34,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:34:34,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517109583] [2023-11-19 07:34:34,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:34,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:34:34,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:34,681 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 07:34:34,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:34:34,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517109583] [2023-11-19 07:34:34,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517109583] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:34:34,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:34:34,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:34:34,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008921571] [2023-11-19 07:34:34,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:34:34,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:34:34,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:34:34,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:34:34,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:34:34,711 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 346 [2023-11-19 07:34:34,712 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 69 transitions, 154 flow. Second operand has 3 states, 3 states have (on average 156.33333333333334) internal successors, (469), 3 states have internal predecessors, (469), 0 states have call successors, (0), 0 states 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 07:34:34,713 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:34:34,713 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 346 [2023-11-19 07:34:34,713 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:34:35,843 INFO L124 PetriNetUnfolderBase]: 5772/9248 cut-off events. [2023-11-19 07:34:35,843 INFO L125 PetriNetUnfolderBase]: For 90/90 co-relation queries the response was YES. [2023-11-19 07:34:35,856 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18336 conditions, 9248 events. 5772/9248 cut-off events. For 90/90 co-relation queries the response was YES. Maximal size of possible extension queue 338. Compared 57790 event pairs, 2604 based on Foata normal form. 410/6754 useless extension candidates. Maximal degree in co-relation 1965. Up to 8989 conditions per place. [2023-11-19 07:34:35,915 INFO L140 encePairwiseOnDemand]: 325/346 looper letters, 63 selfloop transitions, 2 changer transitions 0/70 dead transitions. [2023-11-19 07:34:35,915 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 70 transitions, 286 flow [2023-11-19 07:34:35,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:34:35,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:34:35,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 555 transitions. [2023-11-19 07:34:35,919 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5346820809248555 [2023-11-19 07:34:35,919 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 555 transitions. [2023-11-19 07:34:35,919 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 555 transitions. [2023-11-19 07:34:35,920 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:34:35,921 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 555 transitions. [2023-11-19 07:34:35,923 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 185.0) internal successors, (555), 3 states have internal predecessors, (555), 0 states have call successors, (0), 0 states 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 07:34:35,926 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 346.0) internal successors, (1384), 4 states have internal predecessors, (1384), 0 states have call successors, (0), 0 states 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 07:34:35,927 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 346.0) internal successors, (1384), 4 states have internal predecessors, (1384), 0 states have call successors, (0), 0 states 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 07:34:35,927 INFO L175 Difference]: Start difference. First operand has 56 places, 69 transitions, 154 flow. Second operand 3 states and 555 transitions. [2023-11-19 07:34:35,928 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 70 transitions, 286 flow [2023-11-19 07:34:35,930 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 70 transitions, 286 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:34:35,933 INFO L231 Difference]: Finished difference. Result has 59 places, 55 transitions, 142 flow [2023-11-19 07:34:35,933 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=346, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=142, PETRI_PLACES=59, PETRI_TRANSITIONS=55} [2023-11-19 07:34:35,936 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 3 predicate places. [2023-11-19 07:34:35,936 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 55 transitions, 142 flow [2023-11-19 07:34:35,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 156.33333333333334) internal successors, (469), 3 states have internal predecessors, (469), 0 states have call successors, (0), 0 states 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 07:34:35,937 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:34:35,937 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:34:35,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 07:34:35,938 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-19 07:34:35,938 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:34:35,938 INFO L85 PathProgramCache]: Analyzing trace with hash -108673724, now seen corresponding path program 1 times [2023-11-19 07:34:35,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:34:35,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171326107] [2023-11-19 07:34:35,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:35,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:34:35,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:36,044 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 07:34:36,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:34:36,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171326107] [2023-11-19 07:34:36,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171326107] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:34:36,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:34:36,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:34:36,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710092052] [2023-11-19 07:34:36,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:34:36,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:34:36,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:34:36,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:34:36,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:34:36,072 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 346 [2023-11-19 07:34:36,074 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 55 transitions, 142 flow. Second operand has 3 states, 3 states have (on average 158.0) internal successors, (474), 3 states have internal predecessors, (474), 0 states have call successors, (0), 0 states 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 07:34:36,074 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:34:36,079 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 346 [2023-11-19 07:34:36,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:34:37,361 INFO L124 PetriNetUnfolderBase]: 6436/10650 cut-off events. [2023-11-19 07:34:37,361 INFO L125 PetriNetUnfolderBase]: For 560/560 co-relation queries the response was YES. [2023-11-19 07:34:37,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22381 conditions, 10650 events. 6436/10650 cut-off events. For 560/560 co-relation queries the response was YES. Maximal size of possible extension queue 414. Compared 71573 event pairs, 2081 based on Foata normal form. 0/8117 useless extension candidates. Maximal degree in co-relation 22288. Up to 7671 conditions per place. [2023-11-19 07:34:37,440 INFO L140 encePairwiseOnDemand]: 332/346 looper letters, 84 selfloop transitions, 6 changer transitions 0/95 dead transitions. [2023-11-19 07:34:37,441 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 95 transitions, 426 flow [2023-11-19 07:34:37,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:34:37,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:34:37,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 564 transitions. [2023-11-19 07:34:37,444 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5433526011560693 [2023-11-19 07:34:37,444 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 564 transitions. [2023-11-19 07:34:37,444 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 564 transitions. [2023-11-19 07:34:37,444 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:34:37,444 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 564 transitions. [2023-11-19 07:34:37,446 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 188.0) internal successors, (564), 3 states have internal predecessors, (564), 0 states have call successors, (0), 0 states 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 07:34:37,449 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 346.0) internal successors, (1384), 4 states have internal predecessors, (1384), 0 states have call successors, (0), 0 states 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 07:34:37,450 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 346.0) internal successors, (1384), 4 states have internal predecessors, (1384), 0 states have call successors, (0), 0 states 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 07:34:37,450 INFO L175 Difference]: Start difference. First operand has 59 places, 55 transitions, 142 flow. Second operand 3 states and 564 transitions. [2023-11-19 07:34:37,450 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 95 transitions, 426 flow [2023-11-19 07:34:37,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 95 transitions, 423 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:34:37,458 INFO L231 Difference]: Finished difference. Result has 62 places, 60 transitions, 200 flow [2023-11-19 07:34:37,459 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=346, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=200, PETRI_PLACES=62, PETRI_TRANSITIONS=60} [2023-11-19 07:34:37,460 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 6 predicate places. [2023-11-19 07:34:37,461 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 60 transitions, 200 flow [2023-11-19 07:34:37,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 158.0) internal successors, (474), 3 states have internal predecessors, (474), 0 states have call successors, (0), 0 states 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 07:34:37,461 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:34:37,461 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-11-19 07:34:37,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 07:34:37,462 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-19 07:34:37,462 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:34:37,462 INFO L85 PathProgramCache]: Analyzing trace with hash -40635885, now seen corresponding path program 1 times [2023-11-19 07:34:37,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:34:37,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385238138] [2023-11-19 07:34:37,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:37,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:34:37,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:37,523 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:34:37,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:34:37,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385238138] [2023-11-19 07:34:37,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385238138] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:34:37,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:34:37,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:34:37,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029400072] [2023-11-19 07:34:37,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:34:37,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:34:37,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:34:37,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:34:37,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:34:37,543 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 346 [2023-11-19 07:34:37,544 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 60 transitions, 200 flow. Second operand has 3 states, 3 states have (on average 157.33333333333334) internal successors, (472), 3 states have internal predecessors, (472), 0 states have call successors, (0), 0 states 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 07:34:37,544 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:34:37,544 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 346 [2023-11-19 07:34:37,544 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:34:38,697 INFO L124 PetriNetUnfolderBase]: 6056/10045 cut-off events. [2023-11-19 07:34:38,697 INFO L125 PetriNetUnfolderBase]: For 2439/2439 co-relation queries the response was YES. [2023-11-19 07:34:38,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23956 conditions, 10045 events. 6056/10045 cut-off events. For 2439/2439 co-relation queries the response was YES. Maximal size of possible extension queue 381. Compared 69680 event pairs, 1566 based on Foata normal form. 0/8425 useless extension candidates. Maximal degree in co-relation 19907. Up to 7745 conditions per place. [2023-11-19 07:34:38,770 INFO L140 encePairwiseOnDemand]: 342/346 looper letters, 81 selfloop transitions, 3 changer transitions 0/89 dead transitions. [2023-11-19 07:34:38,771 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 89 transitions, 456 flow [2023-11-19 07:34:38,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:34:38,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:34:38,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 542 transitions. [2023-11-19 07:34:38,774 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5221579961464354 [2023-11-19 07:34:38,774 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 542 transitions. [2023-11-19 07:34:38,776 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 542 transitions. [2023-11-19 07:34:38,777 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:34:38,777 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 542 transitions. [2023-11-19 07:34:38,780 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 180.66666666666666) internal successors, (542), 3 states have internal predecessors, (542), 0 states have call successors, (0), 0 states 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 07:34:38,783 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 346.0) internal successors, (1384), 4 states have internal predecessors, (1384), 0 states have call successors, (0), 0 states 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 07:34:38,785 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 346.0) internal successors, (1384), 4 states have internal predecessors, (1384), 0 states have call successors, (0), 0 states 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 07:34:38,785 INFO L175 Difference]: Start difference. First operand has 62 places, 60 transitions, 200 flow. Second operand 3 states and 542 transitions. [2023-11-19 07:34:38,785 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 89 transitions, 456 flow [2023-11-19 07:34:38,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 89 transitions, 440 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:34:38,803 INFO L231 Difference]: Finished difference. Result has 61 places, 59 transitions, 190 flow [2023-11-19 07:34:38,803 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=346, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=190, PETRI_PLACES=61, PETRI_TRANSITIONS=59} [2023-11-19 07:34:38,807 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 5 predicate places. [2023-11-19 07:34:38,807 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 59 transitions, 190 flow [2023-11-19 07:34:38,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 157.33333333333334) internal successors, (472), 3 states have internal predecessors, (472), 0 states have call successors, (0), 0 states 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 07:34:38,808 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:34:38,808 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-11-19 07:34:38,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 07:34:38,809 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-19 07:34:38,809 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:34:38,810 INFO L85 PathProgramCache]: Analyzing trace with hash -40635841, now seen corresponding path program 1 times [2023-11-19 07:34:38,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:34:38,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191382482] [2023-11-19 07:34:38,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:38,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:34:38,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:38,898 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:34:38,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:34:38,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191382482] [2023-11-19 07:34:38,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191382482] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:34:38,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:34:38,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:34:38,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232191112] [2023-11-19 07:34:38,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:34:38,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:34:38,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:34:38,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:34:38,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:34:38,915 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 346 [2023-11-19 07:34:38,916 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 59 transitions, 190 flow. Second operand has 3 states, 3 states have (on average 156.33333333333334) internal successors, (469), 3 states have internal predecessors, (469), 0 states have call successors, (0), 0 states 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 07:34:38,916 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:34:38,916 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 346 [2023-11-19 07:34:38,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:34:39,948 INFO L124 PetriNetUnfolderBase]: 5676/9455 cut-off events. [2023-11-19 07:34:39,949 INFO L125 PetriNetUnfolderBase]: For 1463/1463 co-relation queries the response was YES. [2023-11-19 07:34:39,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22292 conditions, 9455 events. 5676/9455 cut-off events. For 1463/1463 co-relation queries the response was YES. Maximal size of possible extension queue 344. Compared 64310 event pairs, 812 based on Foata normal form. 0/8094 useless extension candidates. Maximal degree in co-relation 15460. Up to 8355 conditions per place. [2023-11-19 07:34:40,098 INFO L140 encePairwiseOnDemand]: 342/346 looper letters, 80 selfloop transitions, 4 changer transitions 0/89 dead transitions. [2023-11-19 07:34:40,098 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 89 transitions, 444 flow [2023-11-19 07:34:40,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:34:40,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:34:40,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 539 transitions. [2023-11-19 07:34:40,101 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5192678227360308 [2023-11-19 07:34:40,102 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 539 transitions. [2023-11-19 07:34:40,102 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 539 transitions. [2023-11-19 07:34:40,102 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:34:40,103 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 539 transitions. [2023-11-19 07:34:40,105 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 179.66666666666666) internal successors, (539), 3 states have internal predecessors, (539), 0 states have call successors, (0), 0 states 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 07:34:40,108 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 346.0) internal successors, (1384), 4 states have internal predecessors, (1384), 0 states have call successors, (0), 0 states 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 07:34:40,109 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 346.0) internal successors, (1384), 4 states have internal predecessors, (1384), 0 states have call successors, (0), 0 states 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 07:34:40,110 INFO L175 Difference]: Start difference. First operand has 61 places, 59 transitions, 190 flow. Second operand 3 states and 539 transitions. [2023-11-19 07:34:40,110 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 89 transitions, 444 flow [2023-11-19 07:34:40,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 89 transitions, 438 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:34:40,145 INFO L231 Difference]: Finished difference. Result has 61 places, 59 transitions, 196 flow [2023-11-19 07:34:40,145 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=346, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=196, PETRI_PLACES=61, PETRI_TRANSITIONS=59} [2023-11-19 07:34:40,147 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 5 predicate places. [2023-11-19 07:34:40,149 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 59 transitions, 196 flow [2023-11-19 07:34:40,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 156.33333333333334) internal successors, (469), 3 states have internal predecessors, (469), 0 states have call successors, (0), 0 states 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 07:34:40,150 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:34:40,150 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:34:40,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 07:34:40,150 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-19 07:34:40,151 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:34:40,151 INFO L85 PathProgramCache]: Analyzing trace with hash -1940092805, now seen corresponding path program 1 times [2023-11-19 07:34:40,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:34:40,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787302641] [2023-11-19 07:34:40,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:40,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:34:40,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:40,242 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 07:34:40,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:34:40,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787302641] [2023-11-19 07:34:40,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787302641] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:34:40,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:34:40,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:34:40,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471738157] [2023-11-19 07:34:40,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:34:40,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:34:40,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:34:40,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:34:40,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:34:40,292 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 346 [2023-11-19 07:34:40,294 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 59 transitions, 196 flow. Second operand has 5 states, 5 states have (on average 154.0) internal successors, (770), 5 states have internal predecessors, (770), 0 states have call successors, (0), 0 states 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 07:34:40,295 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:34:40,295 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 346 [2023-11-19 07:34:40,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:34:41,795 INFO L124 PetriNetUnfolderBase]: 6562/10911 cut-off events. [2023-11-19 07:34:41,796 INFO L125 PetriNetUnfolderBase]: For 3165/3165 co-relation queries the response was YES. [2023-11-19 07:34:41,814 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26017 conditions, 10911 events. 6562/10911 cut-off events. For 3165/3165 co-relation queries the response was YES. Maximal size of possible extension queue 411. Compared 73634 event pairs, 974 based on Foata normal form. 98/9655 useless extension candidates. Maximal degree in co-relation 22017. Up to 4914 conditions per place. [2023-11-19 07:34:41,862 INFO L140 encePairwiseOnDemand]: 330/346 looper letters, 186 selfloop transitions, 26 changer transitions 0/217 dead transitions. [2023-11-19 07:34:41,862 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 217 transitions, 1101 flow [2023-11-19 07:34:41,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:34:41,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-19 07:34:41,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1278 transitions. [2023-11-19 07:34:41,869 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5276630883567299 [2023-11-19 07:34:41,869 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1278 transitions. [2023-11-19 07:34:41,869 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1278 transitions. [2023-11-19 07:34:41,870 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:34:41,870 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1278 transitions. [2023-11-19 07:34:41,875 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 182.57142857142858) internal successors, (1278), 7 states have internal predecessors, (1278), 0 states have call successors, (0), 0 states 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 07:34:41,881 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 346.0) internal successors, (2768), 8 states have internal predecessors, (2768), 0 states have call successors, (0), 0 states 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 07:34:41,882 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 346.0) internal successors, (2768), 8 states have internal predecessors, (2768), 0 states have call successors, (0), 0 states 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 07:34:41,882 INFO L175 Difference]: Start difference. First operand has 61 places, 59 transitions, 196 flow. Second operand 7 states and 1278 transitions. [2023-11-19 07:34:41,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 217 transitions, 1101 flow [2023-11-19 07:34:41,886 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 217 transitions, 1083 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:34:41,890 INFO L231 Difference]: Finished difference. Result has 72 places, 79 transitions, 410 flow [2023-11-19 07:34:41,890 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=346, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=410, PETRI_PLACES=72, PETRI_TRANSITIONS=79} [2023-11-19 07:34:41,891 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 16 predicate places. [2023-11-19 07:34:41,891 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 79 transitions, 410 flow [2023-11-19 07:34:41,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 154.0) internal successors, (770), 5 states have internal predecessors, (770), 0 states have call successors, (0), 0 states 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 07:34:41,892 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:34:41,892 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:34:41,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-19 07:34:41,892 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-19 07:34:41,893 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:34:41,893 INFO L85 PathProgramCache]: Analyzing trace with hash -1940092726, now seen corresponding path program 1 times [2023-11-19 07:34:41,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:34:41,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341842956] [2023-11-19 07:34:41,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:41,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:34:41,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:41,965 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 07:34:41,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:34:41,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341842956] [2023-11-19 07:34:41,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341842956] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:34:41,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:34:41,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:34:41,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824131547] [2023-11-19 07:34:41,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:34:41,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:34:41,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:34:41,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:34:41,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:34:41,997 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 346 [2023-11-19 07:34:41,999 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 79 transitions, 410 flow. Second operand has 5 states, 5 states have (on average 154.0) internal successors, (770), 5 states have internal predecessors, (770), 0 states have call successors, (0), 0 states 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 07:34:41,999 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:34:41,999 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 346 [2023-11-19 07:34:41,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:34:43,444 INFO L124 PetriNetUnfolderBase]: 6247/10522 cut-off events. [2023-11-19 07:34:43,444 INFO L125 PetriNetUnfolderBase]: For 10265/10265 co-relation queries the response was YES. [2023-11-19 07:34:43,470 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30018 conditions, 10522 events. 6247/10522 cut-off events. For 10265/10265 co-relation queries the response was YES. Maximal size of possible extension queue 412. Compared 71839 event pairs, 908 based on Foata normal form. 289/9889 useless extension candidates. Maximal degree in co-relation 25714. Up to 5004 conditions per place. [2023-11-19 07:34:43,510 INFO L140 encePairwiseOnDemand]: 330/346 looper letters, 189 selfloop transitions, 33 changer transitions 0/227 dead transitions. [2023-11-19 07:34:43,511 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 227 transitions, 1355 flow [2023-11-19 07:34:43,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:34:43,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-19 07:34:43,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1275 transitions. [2023-11-19 07:34:43,517 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5264244426094137 [2023-11-19 07:34:43,518 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1275 transitions. [2023-11-19 07:34:43,518 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1275 transitions. [2023-11-19 07:34:43,519 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:34:43,519 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1275 transitions. [2023-11-19 07:34:43,523 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 182.14285714285714) internal successors, (1275), 7 states have internal predecessors, (1275), 0 states have call successors, (0), 0 states 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 07:34:43,529 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 346.0) internal successors, (2768), 8 states have internal predecessors, (2768), 0 states have call successors, (0), 0 states 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 07:34:43,530 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 346.0) internal successors, (2768), 8 states have internal predecessors, (2768), 0 states have call successors, (0), 0 states 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 07:34:43,531 INFO L175 Difference]: Start difference. First operand has 72 places, 79 transitions, 410 flow. Second operand 7 states and 1275 transitions. [2023-11-19 07:34:43,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 227 transitions, 1355 flow [2023-11-19 07:34:43,581 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 227 transitions, 1355 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:34:43,585 INFO L231 Difference]: Finished difference. Result has 82 places, 93 transitions, 660 flow [2023-11-19 07:34:43,586 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=346, PETRI_DIFFERENCE_MINUEND_FLOW=404, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=660, PETRI_PLACES=82, PETRI_TRANSITIONS=93} [2023-11-19 07:34:43,586 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 26 predicate places. [2023-11-19 07:34:43,586 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 93 transitions, 660 flow [2023-11-19 07:34:43,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 154.0) internal successors, (770), 5 states have internal predecessors, (770), 0 states have call successors, (0), 0 states 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 07:34:43,587 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:34:43,587 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-11-19 07:34:43,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-19 07:34:43,588 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-19 07:34:43,588 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:34:43,588 INFO L85 PathProgramCache]: Analyzing trace with hash -396308476, now seen corresponding path program 1 times [2023-11-19 07:34:43,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:34:43,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754338398] [2023-11-19 07:34:43,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:43,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:34:43,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:34:43,610 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:34:43,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:34:43,642 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:34:43,643 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 07:34:43,643 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2023-11-19 07:34:43,644 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2023-11-19 07:34:43,644 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2023-11-19 07:34:43,644 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2023-11-19 07:34:43,644 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2023-11-19 07:34:43,645 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2023-11-19 07:34:43,646 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2023-11-19 07:34:43,646 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2023-11-19 07:34:43,646 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 17 remaining) [2023-11-19 07:34:43,646 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 17 remaining) [2023-11-19 07:34:43,647 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 17 remaining) [2023-11-19 07:34:43,647 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2023-11-19 07:34:43,647 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2023-11-19 07:34:43,647 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2023-11-19 07:34:43,648 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2023-11-19 07:34:43,648 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2023-11-19 07:34:43,648 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2023-11-19 07:34:43,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-19 07:34:43,648 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:34:43,649 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-19 07:34:43,650 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-19 07:34:43,694 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-19 07:34:43,703 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 199 places, 222 transitions, 471 flow [2023-11-19 07:34:43,805 INFO L124 PetriNetUnfolderBase]: 66/494 cut-off events. [2023-11-19 07:34:43,805 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-11-19 07:34:43,811 INFO L83 FinitePrefix]: Finished finitePrefix Result has 519 conditions, 494 events. 66/494 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1758 event pairs, 1 based on Foata normal form. 0/392 useless extension candidates. Maximal degree in co-relation 332. Up to 16 conditions per place. [2023-11-19 07:34:43,811 INFO L82 GeneralOperation]: Start removeDead. Operand has 199 places, 222 transitions, 471 flow [2023-11-19 07:34:43,817 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 199 places, 222 transitions, 471 flow [2023-11-19 07:34:43,818 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:34:43,818 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 199 places, 222 transitions, 471 flow [2023-11-19 07:34:43,818 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 199 places, 222 transitions, 471 flow [2023-11-19 07:34:43,818 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 199 places, 222 transitions, 471 flow [2023-11-19 07:34:43,912 INFO L124 PetriNetUnfolderBase]: 66/494 cut-off events. [2023-11-19 07:34:43,913 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-11-19 07:34:43,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 519 conditions, 494 events. 66/494 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1758 event pairs, 1 based on Foata normal form. 0/392 useless extension candidates. Maximal degree in co-relation 332. Up to 16 conditions per place. [2023-11-19 07:34:43,948 INFO L119 LiptonReduction]: Number of co-enabled transitions 23328 [2023-11-19 07:34:48,547 INFO L134 LiptonReduction]: Checked pairs total: 56765 [2023-11-19 07:34:48,547 INFO L136 LiptonReduction]: Total number of compositions: 185 [2023-11-19 07:34:48,549 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:34:48,550 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;@554f33ef, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:34:48,550 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2023-11-19 07:34:48,553 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:34:48,553 INFO L124 PetriNetUnfolderBase]: 4/17 cut-off events. [2023-11-19 07:34:48,553 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:34:48,554 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:34:48,554 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 07:34:48,554 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-19 07:34:48,554 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:34:48,555 INFO L85 PathProgramCache]: Analyzing trace with hash 1332435718, now seen corresponding path program 1 times [2023-11-19 07:34:48,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:34:48,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971535533] [2023-11-19 07:34:48,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:48,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:34:48,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:48,584 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 07:34:48,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:34:48,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971535533] [2023-11-19 07:34:48,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971535533] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:34:48,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:34:48,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:34:48,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672406735] [2023-11-19 07:34:48,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:34:48,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:34:48,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:34:48,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:34:48,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:34:48,601 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 185 out of 407 [2023-11-19 07:34:48,602 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 92 transitions, 211 flow. Second operand has 3 states, 3 states have (on average 186.33333333333334) internal successors, (559), 3 states have internal predecessors, (559), 0 states have call successors, (0), 0 states 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 07:34:48,602 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:34:48,602 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 185 of 407 [2023-11-19 07:34:48,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:35:01,316 INFO L124 PetriNetUnfolderBase]: 101334/144529 cut-off events. [2023-11-19 07:35:01,316 INFO L125 PetriNetUnfolderBase]: For 2606/2606 co-relation queries the response was YES. [2023-11-19 07:35:01,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 285560 conditions, 144529 events. 101334/144529 cut-off events. For 2606/2606 co-relation queries the response was YES. Maximal size of possible extension queue 5071. Compared 1135715 event pairs, 63773 based on Foata normal form. 16625/113424 useless extension candidates. Maximal degree in co-relation 15167. Up to 139600 conditions per place. [2023-11-19 07:35:02,049 INFO L140 encePairwiseOnDemand]: 380/407 looper letters, 75 selfloop transitions, 2 changer transitions 0/87 dead transitions. [2023-11-19 07:35:02,049 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 87 transitions, 355 flow [2023-11-19 07:35:02,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:35:02,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:35:02,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 663 transitions. [2023-11-19 07:35:02,053 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.542997542997543 [2023-11-19 07:35:02,053 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 663 transitions. [2023-11-19 07:35:02,053 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 663 transitions. [2023-11-19 07:35:02,054 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:35:02,054 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 663 transitions. [2023-11-19 07:35:02,056 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 221.0) internal successors, (663), 3 states have internal predecessors, (663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:35:02,059 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 407.0) internal successors, (1628), 4 states have internal predecessors, (1628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:35:02,060 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 407.0) internal successors, (1628), 4 states have internal predecessors, (1628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:35:02,061 INFO L175 Difference]: Start difference. First operand has 74 places, 92 transitions, 211 flow. Second operand 3 states and 663 transitions. [2023-11-19 07:35:02,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 87 transitions, 355 flow [2023-11-19 07:35:02,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 87 transitions, 355 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:35:02,065 INFO L231 Difference]: Finished difference. Result has 77 places, 72 transitions, 187 flow [2023-11-19 07:35:02,066 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=407, PETRI_DIFFERENCE_MINUEND_FLOW=169, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=187, PETRI_PLACES=77, PETRI_TRANSITIONS=72} [2023-11-19 07:35:02,066 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 3 predicate places. [2023-11-19 07:35:02,067 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 72 transitions, 187 flow [2023-11-19 07:35:02,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 186.33333333333334) internal successors, (559), 3 states have internal predecessors, (559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:35:02,067 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:35:02,068 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:35:02,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-19 07:35:02,068 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-19 07:35:02,068 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:35:02,069 INFO L85 PathProgramCache]: Analyzing trace with hash 579285980, now seen corresponding path program 1 times [2023-11-19 07:35:02,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:35:02,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459002215] [2023-11-19 07:35:02,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:35:02,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:35:02,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:35:02,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:35:02,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:35:02,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459002215] [2023-11-19 07:35:02,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459002215] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:35:02,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:35:02,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:35:02,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275972670] [2023-11-19 07:35:02,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:35:02,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:35:02,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:35:02,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:35:02,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:35:02,143 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 407 [2023-11-19 07:35:02,144 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 72 transitions, 187 flow. Second operand has 3 states, 3 states have (on average 186.0) internal successors, (558), 3 states have internal predecessors, (558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:35:02,144 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:35:02,144 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 407 [2023-11-19 07:35:02,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand