./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread-ext/36_stack_cas_p0_vs_concur.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c893c70-14bc-4fc1-b510-57f4eca23568/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c893c70-14bc-4fc1-b510-57f4eca23568/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c893c70-14bc-4fc1-b510-57f4eca23568/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c893c70-14bc-4fc1-b510-57f4eca23568/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-ext/36_stack_cas_p0_vs_concur.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c893c70-14bc-4fc1-b510-57f4eca23568/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c893c70-14bc-4fc1-b510-57f4eca23568/bin/uautomizer-uyxdKDjOR8 --witnessprinter.witness.filename witness.graphml --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 e7fe0631e7f950e2868c8cb954edca4f6de3fdffbf6debba58771511fbac2e8b --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-13 16:03:54,620 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 16:03:54,622 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 16:03:54,645 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 16:03:54,645 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 16:03:54,647 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 16:03:54,649 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 16:03:54,651 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 16:03:54,653 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 16:03:54,655 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 16:03:54,656 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 16:03:54,658 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 16:03:54,658 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 16:03:54,659 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 16:03:54,661 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 16:03:54,663 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 16:03:54,664 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 16:03:54,665 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 16:03:54,668 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 16:03:54,670 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 16:03:54,673 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 16:03:54,674 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 16:03:54,676 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 16:03:54,677 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 16:03:54,683 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 16:03:54,683 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 16:03:54,684 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 16:03:54,685 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 16:03:54,686 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 16:03:54,687 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 16:03:54,687 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 16:03:54,688 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 16:03:54,689 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 16:03:54,690 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 16:03:54,691 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 16:03:54,691 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 16:03:54,692 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 16:03:54,692 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 16:03:54,692 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 16:03:54,693 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 16:03:54,694 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 16:03:54,694 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c893c70-14bc-4fc1-b510-57f4eca23568/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-12-13 16:03:54,717 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 16:03:54,718 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 16:03:54,718 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 16:03:54,718 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 16:03:54,719 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 16:03:54,719 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 16:03:54,724 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 16:03:54,724 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 16:03:54,724 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 16:03:54,724 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 16:03:54,725 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 16:03:54,725 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 16:03:54,725 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 16:03:54,725 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 16:03:54,725 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 16:03:54,726 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 16:03:54,726 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 16:03:54,726 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 16:03:54,726 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-13 16:03:54,726 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 16:03:54,727 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 16:03:54,727 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 16:03:54,727 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 16:03:54,727 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 16:03:54,727 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 16:03:54,728 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 16:03:54,728 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 16:03:54,728 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 16:03:54,728 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 16:03:54,728 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 16:03:54,729 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 16:03:54,729 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 16:03:54,729 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 16:03:54,729 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 16:03:54,729 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 16:03:54,729 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 16:03:54,730 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 16:03:54,730 INFO L138 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_2c893c70-14bc-4fc1-b510-57f4eca23568/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c893c70-14bc-4fc1-b510-57f4eca23568/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e7fe0631e7f950e2868c8cb954edca4f6de3fdffbf6debba58771511fbac2e8b [2022-12-13 16:03:54,903 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 16:03:54,921 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 16:03:54,924 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 16:03:54,924 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 16:03:54,925 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 16:03:54,926 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c893c70-14bc-4fc1-b510-57f4eca23568/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/pthread-ext/36_stack_cas_p0_vs_concur.i [2022-12-13 16:03:57,444 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 16:03:57,668 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 16:03:57,668 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c893c70-14bc-4fc1-b510-57f4eca23568/sv-benchmarks/c/pthread-ext/36_stack_cas_p0_vs_concur.i [2022-12-13 16:03:57,679 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c893c70-14bc-4fc1-b510-57f4eca23568/bin/uautomizer-uyxdKDjOR8/data/a3cd5d7fc/fbecb932ed9c40728729df1be575ac4e/FLAG3adab0a40 [2022-12-13 16:03:58,041 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c893c70-14bc-4fc1-b510-57f4eca23568/bin/uautomizer-uyxdKDjOR8/data/a3cd5d7fc/fbecb932ed9c40728729df1be575ac4e [2022-12-13 16:03:58,048 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 16:03:58,051 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 16:03:58,054 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 16:03:58,055 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 16:03:58,061 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 16:03:58,062 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 04:03:58" (1/1) ... [2022-12-13 16:03:58,064 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40a60199 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:03:58, skipping insertion in model container [2022-12-13 16:03:58,064 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 04:03:58" (1/1) ... [2022-12-13 16:03:58,072 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 16:03:58,097 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 16:03:58,291 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c893c70-14bc-4fc1-b510-57f4eca23568/sv-benchmarks/c/pthread-ext/36_stack_cas_p0_vs_concur.i[30687,30700] [2022-12-13 16:03:58,294 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 16:03:58,302 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 16:03:58,329 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c893c70-14bc-4fc1-b510-57f4eca23568/sv-benchmarks/c/pthread-ext/36_stack_cas_p0_vs_concur.i[30687,30700] [2022-12-13 16:03:58,330 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 16:03:58,350 INFO L208 MainTranslator]: Completed translation [2022-12-13 16:03:58,350 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:03:58 WrapperNode [2022-12-13 16:03:58,350 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 16:03:58,351 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 16:03:58,351 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 16:03:58,351 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 16:03:58,356 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:03:58" (1/1) ... [2022-12-13 16:03:58,365 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:03:58" (1/1) ... [2022-12-13 16:03:58,380 INFO L138 Inliner]: procedures = 170, calls = 35, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 112 [2022-12-13 16:03:58,380 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 16:03:58,381 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 16:03:58,381 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 16:03:58,381 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 16:03:58,387 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:03:58" (1/1) ... [2022-12-13 16:03:58,387 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:03:58" (1/1) ... [2022-12-13 16:03:58,389 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:03:58" (1/1) ... [2022-12-13 16:03:58,389 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:03:58" (1/1) ... [2022-12-13 16:03:58,392 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:03:58" (1/1) ... [2022-12-13 16:03:58,395 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:03:58" (1/1) ... [2022-12-13 16:03:58,396 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:03:58" (1/1) ... [2022-12-13 16:03:58,397 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:03:58" (1/1) ... [2022-12-13 16:03:58,399 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 16:03:58,399 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 16:03:58,399 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 16:03:58,400 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 16:03:58,400 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:03:58" (1/1) ... [2022-12-13 16:03:58,405 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 16:03:58,413 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c893c70-14bc-4fc1-b510-57f4eca23568/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:03:58,423 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c893c70-14bc-4fc1-b510-57f4eca23568/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 16:03:58,425 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c893c70-14bc-4fc1-b510-57f4eca23568/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 16:03:58,461 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 16:03:58,462 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2022-12-13 16:03:58,462 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2022-12-13 16:03:58,462 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 16:03:58,462 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 16:03:58,462 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 16:03:58,462 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 16:03:58,462 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 16:03:58,463 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 16:03:58,463 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 16:03:58,464 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-13 16:03:58,552 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 16:03:58,553 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 16:03:58,751 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 16:03:58,813 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 16:03:58,813 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-12-13 16:03:58,815 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 04:03:58 BoogieIcfgContainer [2022-12-13 16:03:58,815 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 16:03:58,816 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 16:03:58,817 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 16:03:58,819 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 16:03:58,819 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 04:03:58" (1/3) ... [2022-12-13 16:03:58,820 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3eaf30ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 04:03:58, skipping insertion in model container [2022-12-13 16:03:58,820 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:03:58" (2/3) ... [2022-12-13 16:03:58,820 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3eaf30ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 04:03:58, skipping insertion in model container [2022-12-13 16:03:58,820 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 04:03:58" (3/3) ... [2022-12-13 16:03:58,821 INFO L112 eAbstractionObserver]: Analyzing ICFG 36_stack_cas_p0_vs_concur.i [2022-12-13 16:03:58,828 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 16:03:58,845 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 16:03:58,845 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2022-12-13 16:03:58,845 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 16:03:58,904 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-13 16:03:58,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 104 places, 110 transitions, 225 flow [2022-12-13 16:03:58,970 INFO L130 PetriNetUnfolder]: 10/121 cut-off events. [2022-12-13 16:03:58,970 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 16:03:58,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126 conditions, 121 events. 10/121 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 147 event pairs, 0 based on Foata normal form. 0/99 useless extension candidates. Maximal degree in co-relation 90. Up to 4 conditions per place. [2022-12-13 16:03:58,975 INFO L82 GeneralOperation]: Start removeDead. Operand has 104 places, 110 transitions, 225 flow [2022-12-13 16:03:58,978 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 104 places, 110 transitions, 225 flow [2022-12-13 16:03:58,982 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 16:03:58,990 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 104 places, 110 transitions, 225 flow [2022-12-13 16:03:58,992 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 104 places, 110 transitions, 225 flow [2022-12-13 16:03:58,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 104 places, 110 transitions, 225 flow [2022-12-13 16:03:59,013 INFO L130 PetriNetUnfolder]: 10/121 cut-off events. [2022-12-13 16:03:59,014 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 16:03:59,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126 conditions, 121 events. 10/121 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 147 event pairs, 0 based on Foata normal form. 0/99 useless extension candidates. Maximal degree in co-relation 90. Up to 4 conditions per place. [2022-12-13 16:03:59,016 INFO L119 LiptonReduction]: Number of co-enabled transitions 2156 [2022-12-13 16:04:00,443 INFO L134 LiptonReduction]: Checked pairs total: 2820 [2022-12-13 16:04:00,444 INFO L136 LiptonReduction]: Total number of compositions: 96 [2022-12-13 16:04:00,455 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 16:04:00,460 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=LoopsAndPotentialCycles, 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;@5d18379f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 16:04:00,460 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2022-12-13 16:04:00,463 INFO L130 PetriNetUnfolder]: 0/7 cut-off events. [2022-12-13 16:04:00,463 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 16:04:00,463 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:04:00,463 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 16:04:00,464 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-12-13 16:04:00,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:04:00,467 INFO L85 PathProgramCache]: Analyzing trace with hash 519075051, now seen corresponding path program 1 times [2022-12-13 16:04:00,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:04:00,474 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951757851] [2022-12-13 16:04:00,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:04:00,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:04:00,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:04:00,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:04:00,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:04:00,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951757851] [2022-12-13 16:04:00,585 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951757851] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:04:00,585 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:04:00,585 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 16:04:00,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727458811] [2022-12-13 16:04:00,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:04:00,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 16:04:00,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:04:00,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 16:04:00,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 16:04:00,615 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 206 [2022-12-13 16:04:00,617 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 36 transitions, 77 flow. Second operand has 2 states, 2 states have (on average 94.0) internal successors, (188), 2 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:04:00,617 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:04:00,617 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 206 [2022-12-13 16:04:00,618 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:04:00,673 INFO L130 PetriNetUnfolder]: 44/113 cut-off events. [2022-12-13 16:04:00,673 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 16:04:00,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 224 conditions, 113 events. 44/113 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 290 event pairs, 35 based on Foata normal form. 0/92 useless extension candidates. Maximal degree in co-relation 205. Up to 103 conditions per place. [2022-12-13 16:04:00,676 INFO L137 encePairwiseOnDemand]: 200/206 looper letters, 24 selfloop transitions, 0 changer transitions 0/30 dead transitions. [2022-12-13 16:04:00,676 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 30 transitions, 113 flow [2022-12-13 16:04:00,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 16:04:00,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-12-13 16:04:00,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 214 transitions. [2022-12-13 16:04:00,689 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5194174757281553 [2022-12-13 16:04:00,690 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 214 transitions. [2022-12-13 16:04:00,690 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 214 transitions. [2022-12-13 16:04:00,691 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:04:00,693 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 214 transitions. [2022-12-13 16:04:00,696 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 107.0) internal successors, (214), 2 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:04:00,702 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 206.0) internal successors, (618), 3 states have internal predecessors, (618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:04:00,703 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 206.0) internal successors, (618), 3 states have internal predecessors, (618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:04:00,704 INFO L175 Difference]: Start difference. First operand has 35 places, 36 transitions, 77 flow. Second operand 2 states and 214 transitions. [2022-12-13 16:04:00,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 30 transitions, 113 flow [2022-12-13 16:04:00,707 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 30 transitions, 113 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 16:04:00,709 INFO L231 Difference]: Finished difference. Result has 31 places, 30 transitions, 65 flow [2022-12-13 16:04:00,711 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=65, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=65, PETRI_PLACES=31, PETRI_TRANSITIONS=30} [2022-12-13 16:04:00,713 INFO L288 CegarLoopForPetriNet]: 35 programPoint places, -4 predicate places. [2022-12-13 16:04:00,713 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 30 transitions, 65 flow [2022-12-13 16:04:00,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 94.0) internal successors, (188), 2 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:04:00,714 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:04:00,714 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2022-12-13 16:04:00,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 16:04:00,714 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-12-13 16:04:00,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:04:00,715 INFO L85 PathProgramCache]: Analyzing trace with hash -1088449805, now seen corresponding path program 1 times [2022-12-13 16:04:00,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:04:00,715 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117944210] [2022-12-13 16:04:00,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:04:00,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:04:00,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 16:04:00,733 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 16:04:00,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 16:04:00,755 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 16:04:00,755 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 16:04:00,757 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 21 remaining) [2022-12-13 16:04:00,758 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 21 remaining) [2022-12-13 16:04:00,758 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 21 remaining) [2022-12-13 16:04:00,759 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 21 remaining) [2022-12-13 16:04:00,759 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 21 remaining) [2022-12-13 16:04:00,759 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 21 remaining) [2022-12-13 16:04:00,759 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 21 remaining) [2022-12-13 16:04:00,759 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 21 remaining) [2022-12-13 16:04:00,759 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 21 remaining) [2022-12-13 16:04:00,759 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 21 remaining) [2022-12-13 16:04:00,760 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 21 remaining) [2022-12-13 16:04:00,760 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 21 remaining) [2022-12-13 16:04:00,760 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 21 remaining) [2022-12-13 16:04:00,760 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 21 remaining) [2022-12-13 16:04:00,760 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 21 remaining) [2022-12-13 16:04:00,760 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 21 remaining) [2022-12-13 16:04:00,760 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 21 remaining) [2022-12-13 16:04:00,760 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 21 remaining) [2022-12-13 16:04:00,761 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 21 remaining) [2022-12-13 16:04:00,761 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 21 remaining) [2022-12-13 16:04:00,761 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 21 remaining) [2022-12-13 16:04:00,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 16:04:00,761 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2022-12-13 16:04:00,763 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-13 16:04:00,763 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-12-13 16:04:00,798 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-13 16:04:00,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 176 places, 188 transitions, 388 flow [2022-12-13 16:04:00,825 INFO L130 PetriNetUnfolder]: 19/212 cut-off events. [2022-12-13 16:04:00,825 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 16:04:00,827 INFO L83 FinitePrefix]: Finished finitePrefix Result has 222 conditions, 212 events. 19/212 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 544 event pairs, 0 based on Foata normal form. 0/170 useless extension candidates. Maximal degree in co-relation 167. Up to 6 conditions per place. [2022-12-13 16:04:00,827 INFO L82 GeneralOperation]: Start removeDead. Operand has 176 places, 188 transitions, 388 flow [2022-12-13 16:04:00,829 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 176 places, 188 transitions, 388 flow [2022-12-13 16:04:00,829 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 16:04:00,829 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 176 places, 188 transitions, 388 flow [2022-12-13 16:04:00,830 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 176 places, 188 transitions, 388 flow [2022-12-13 16:04:00,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 176 places, 188 transitions, 388 flow [2022-12-13 16:04:00,849 INFO L130 PetriNetUnfolder]: 19/212 cut-off events. [2022-12-13 16:04:00,849 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 16:04:00,850 INFO L83 FinitePrefix]: Finished finitePrefix Result has 222 conditions, 212 events. 19/212 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 544 event pairs, 0 based on Foata normal form. 0/170 useless extension candidates. Maximal degree in co-relation 167. Up to 6 conditions per place. [2022-12-13 16:04:00,855 INFO L119 LiptonReduction]: Number of co-enabled transitions 16324 [2022-12-13 16:04:02,582 INFO L134 LiptonReduction]: Checked pairs total: 35841 [2022-12-13 16:04:02,582 INFO L136 LiptonReduction]: Total number of compositions: 151 [2022-12-13 16:04:02,584 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 16:04:02,586 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=LoopsAndPotentialCycles, 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;@5d18379f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 16:04:02,586 INFO L358 AbstractCegarLoop]: Starting to check reachability of 31 error locations. [2022-12-13 16:04:02,588 INFO L130 PetriNetUnfolder]: 0/12 cut-off events. [2022-12-13 16:04:02,588 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 16:04:02,588 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:04:02,589 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:04:02,589 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2022-12-13 16:04:02,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:04:02,589 INFO L85 PathProgramCache]: Analyzing trace with hash 276720155, now seen corresponding path program 1 times [2022-12-13 16:04:02,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:04:02,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23834247] [2022-12-13 16:04:02,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:04:02,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:04:02,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:04:02,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:04:02,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:04:02,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23834247] [2022-12-13 16:04:02,673 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23834247] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:04:02,673 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:04:02,673 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 16:04:02,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524659369] [2022-12-13 16:04:02,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:04:02,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:04:02,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:04:02,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:04:02,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:04:02,678 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 339 [2022-12-13 16:04:02,679 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 76 transitions, 164 flow. Second operand has 3 states, 3 states have (on average 154.66666666666666) internal successors, (464), 3 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:04:02,679 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:04:02,679 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 339 [2022-12-13 16:04:02,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:04:02,924 INFO L130 PetriNetUnfolder]: 1333/2304 cut-off events. [2022-12-13 16:04:02,924 INFO L131 PetriNetUnfolder]: For 66/66 co-relation queries the response was YES. [2022-12-13 16:04:02,925 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4563 conditions, 2304 events. 1333/2304 cut-off events. For 66/66 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 14140 event pairs, 619 based on Foata normal form. 0/1727 useless extension candidates. Maximal degree in co-relation 4074. Up to 2163 conditions per place. [2022-12-13 16:04:02,933 INFO L137 encePairwiseOnDemand]: 315/339 looper letters, 47 selfloop transitions, 3 changer transitions 0/61 dead transitions. [2022-12-13 16:04:02,933 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 61 transitions, 239 flow [2022-12-13 16:04:02,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:04:02,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 16:04:02,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 543 transitions. [2022-12-13 16:04:02,935 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5339233038348082 [2022-12-13 16:04:02,935 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 543 transitions. [2022-12-13 16:04:02,935 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 543 transitions. [2022-12-13 16:04:02,936 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:04:02,936 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 543 transitions. [2022-12-13 16:04:02,937 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 181.0) internal successors, (543), 3 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:04:02,939 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 339.0) internal successors, (1356), 4 states have internal predecessors, (1356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:04:02,939 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 339.0) internal successors, (1356), 4 states have internal predecessors, (1356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:04:02,939 INFO L175 Difference]: Start difference. First operand has 71 places, 76 transitions, 164 flow. Second operand 3 states and 543 transitions. [2022-12-13 16:04:02,939 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 61 transitions, 239 flow [2022-12-13 16:04:02,940 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 61 transitions, 237 flow, removed 1 selfloop flow, removed 0 redundant places. [2022-12-13 16:04:02,941 INFO L231 Difference]: Finished difference. Result has 59 places, 57 transitions, 149 flow [2022-12-13 16:04:02,941 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=339, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=149, PETRI_PLACES=59, PETRI_TRANSITIONS=57} [2022-12-13 16:04:02,942 INFO L288 CegarLoopForPetriNet]: 71 programPoint places, -12 predicate places. [2022-12-13 16:04:02,942 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 57 transitions, 149 flow [2022-12-13 16:04:02,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 154.66666666666666) internal successors, (464), 3 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:04:02,942 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:04:02,942 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:04:02,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 16:04:02,942 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2022-12-13 16:04:02,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:04:02,943 INFO L85 PathProgramCache]: Analyzing trace with hash 1728879608, now seen corresponding path program 1 times [2022-12-13 16:04:02,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:04:02,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485880685] [2022-12-13 16:04:02,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:04:02,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:04:02,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:04:03,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:04:03,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:04:03,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485880685] [2022-12-13 16:04:03,103 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485880685] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:04:03,103 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:04:03,103 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 16:04:03,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515496227] [2022-12-13 16:04:03,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:04:03,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 16:04:03,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:04:03,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 16:04:03,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 16:04:03,176 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 339 [2022-12-13 16:04:03,177 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 57 transitions, 149 flow. Second operand has 5 states, 5 states have (on average 145.6) internal successors, (728), 5 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:04:03,177 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:04:03,177 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 339 [2022-12-13 16:04:03,177 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:04:03,591 INFO L130 PetriNetUnfolder]: 1572/2768 cut-off events. [2022-12-13 16:04:03,592 INFO L131 PetriNetUnfolder]: For 180/180 co-relation queries the response was YES. [2022-12-13 16:04:03,594 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5932 conditions, 2768 events. 1572/2768 cut-off events. For 180/180 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 17660 event pairs, 402 based on Foata normal form. 0/2074 useless extension candidates. Maximal degree in co-relation 4842. Up to 2341 conditions per place. [2022-12-13 16:04:03,603 INFO L137 encePairwiseOnDemand]: 328/339 looper letters, 84 selfloop transitions, 11 changer transitions 0/105 dead transitions. [2022-12-13 16:04:03,603 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 105 transitions, 479 flow [2022-12-13 16:04:03,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 16:04:03,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 16:04:03,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 965 transitions. [2022-12-13 16:04:03,608 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4744346116027532 [2022-12-13 16:04:03,608 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 965 transitions. [2022-12-13 16:04:03,608 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 965 transitions. [2022-12-13 16:04:03,608 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:04:03,609 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 965 transitions. [2022-12-13 16:04:03,610 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 160.83333333333334) internal successors, (965), 6 states have internal predecessors, (965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:04:03,613 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 339.0) internal successors, (2373), 7 states have internal predecessors, (2373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:04:03,614 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 339.0) internal successors, (2373), 7 states have internal predecessors, (2373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:04:03,614 INFO L175 Difference]: Start difference. First operand has 59 places, 57 transitions, 149 flow. Second operand 6 states and 965 transitions. [2022-12-13 16:04:03,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 105 transitions, 479 flow [2022-12-13 16:04:03,616 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 105 transitions, 476 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 16:04:03,617 INFO L231 Difference]: Finished difference. Result has 66 places, 65 transitions, 227 flow [2022-12-13 16:04:03,617 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=339, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=227, PETRI_PLACES=66, PETRI_TRANSITIONS=65} [2022-12-13 16:04:03,617 INFO L288 CegarLoopForPetriNet]: 71 programPoint places, -5 predicate places. [2022-12-13 16:04:03,617 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 65 transitions, 227 flow [2022-12-13 16:04:03,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 145.6) internal successors, (728), 5 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:04:03,618 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:04:03,618 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-12-13 16:04:03,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 16:04:03,618 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2022-12-13 16:04:03,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:04:03,619 INFO L85 PathProgramCache]: Analyzing trace with hash -2036222162, now seen corresponding path program 1 times [2022-12-13 16:04:03,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:04:03,619 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791097606] [2022-12-13 16:04:03,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:04:03,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:04:03,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 16:04:03,626 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 16:04:03,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 16:04:03,633 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 16:04:03,633 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 16:04:03,633 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (30 of 31 remaining) [2022-12-13 16:04:03,633 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 31 remaining) [2022-12-13 16:04:03,634 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 31 remaining) [2022-12-13 16:04:03,634 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 31 remaining) [2022-12-13 16:04:03,634 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 31 remaining) [2022-12-13 16:04:03,634 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 31 remaining) [2022-12-13 16:04:03,634 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 31 remaining) [2022-12-13 16:04:03,634 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 31 remaining) [2022-12-13 16:04:03,634 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 31 remaining) [2022-12-13 16:04:03,635 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 31 remaining) [2022-12-13 16:04:03,635 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 31 remaining) [2022-12-13 16:04:03,635 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 31 remaining) [2022-12-13 16:04:03,635 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 31 remaining) [2022-12-13 16:04:03,635 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 31 remaining) [2022-12-13 16:04:03,635 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 31 remaining) [2022-12-13 16:04:03,635 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 31 remaining) [2022-12-13 16:04:03,636 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 31 remaining) [2022-12-13 16:04:03,636 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 31 remaining) [2022-12-13 16:04:03,636 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 31 remaining) [2022-12-13 16:04:03,636 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 31 remaining) [2022-12-13 16:04:03,636 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 31 remaining) [2022-12-13 16:04:03,636 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 31 remaining) [2022-12-13 16:04:03,636 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 31 remaining) [2022-12-13 16:04:03,636 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 31 remaining) [2022-12-13 16:04:03,636 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 31 remaining) [2022-12-13 16:04:03,637 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 31 remaining) [2022-12-13 16:04:03,637 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 31 remaining) [2022-12-13 16:04:03,637 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 31 remaining) [2022-12-13 16:04:03,637 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 31 remaining) [2022-12-13 16:04:03,637 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 31 remaining) [2022-12-13 16:04:03,637 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 31 remaining) [2022-12-13 16:04:03,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 16:04:03,638 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-12-13 16:04:03,638 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-13 16:04:03,638 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-12-13 16:04:03,671 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-13 16:04:03,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 248 places, 266 transitions, 553 flow [2022-12-13 16:04:03,714 INFO L130 PetriNetUnfolder]: 28/303 cut-off events. [2022-12-13 16:04:03,714 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-12-13 16:04:03,716 INFO L83 FinitePrefix]: Finished finitePrefix Result has 319 conditions, 303 events. 28/303 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1036 event pairs, 0 based on Foata normal form. 0/241 useless extension candidates. Maximal degree in co-relation 244. Up to 8 conditions per place. [2022-12-13 16:04:03,716 INFO L82 GeneralOperation]: Start removeDead. Operand has 248 places, 266 transitions, 553 flow [2022-12-13 16:04:03,719 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 248 places, 266 transitions, 553 flow [2022-12-13 16:04:03,719 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 16:04:03,719 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 248 places, 266 transitions, 553 flow [2022-12-13 16:04:03,719 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 248 places, 266 transitions, 553 flow [2022-12-13 16:04:03,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 248 places, 266 transitions, 553 flow [2022-12-13 16:04:03,757 INFO L130 PetriNetUnfolder]: 28/303 cut-off events. [2022-12-13 16:04:03,758 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-12-13 16:04:03,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 319 conditions, 303 events. 28/303 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1036 event pairs, 0 based on Foata normal form. 0/241 useless extension candidates. Maximal degree in co-relation 244. Up to 8 conditions per place. [2022-12-13 16:04:03,770 INFO L119 LiptonReduction]: Number of co-enabled transitions 42504 [2022-12-13 16:04:05,786 INFO L134 LiptonReduction]: Checked pairs total: 106017 [2022-12-13 16:04:05,786 INFO L136 LiptonReduction]: Total number of compositions: 200 [2022-12-13 16:04:05,788 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 16:04:05,789 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=LoopsAndPotentialCycles, 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;@5d18379f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 16:04:05,789 INFO L358 AbstractCegarLoop]: Starting to check reachability of 41 error locations. [2022-12-13 16:04:05,791 INFO L130 PetriNetUnfolder]: 0/13 cut-off events. [2022-12-13 16:04:05,791 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 16:04:05,791 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:04:05,791 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:04:05,791 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2022-12-13 16:04:05,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:04:05,792 INFO L85 PathProgramCache]: Analyzing trace with hash 1077717111, now seen corresponding path program 1 times [2022-12-13 16:04:05,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:04:05,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832477257] [2022-12-13 16:04:05,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:04:05,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:04:05,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:04:05,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:04:05,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:04:05,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832477257] [2022-12-13 16:04:05,829 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832477257] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:04:05,829 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:04:05,829 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 16:04:05,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874073037] [2022-12-13 16:04:05,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:04:05,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:04:05,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:04:05,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:04:05,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:04:05,832 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 466 [2022-12-13 16:04:05,833 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 105 transitions, 231 flow. Second operand has 3 states, 3 states have (on average 216.66666666666666) internal successors, (650), 3 states have internal predecessors, (650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:04:05,833 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:04:05,833 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 466 [2022-12-13 16:04:05,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:04:11,618 INFO L130 PetriNetUnfolder]: 55998/77331 cut-off events. [2022-12-13 16:04:11,619 INFO L131 PetriNetUnfolder]: For 2734/2734 co-relation queries the response was YES. [2022-12-13 16:04:11,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155542 conditions, 77331 events. 55998/77331 cut-off events. For 2734/2734 co-relation queries the response was YES. Maximal size of possible extension queue 2449. Compared 540273 event pairs, 32953 based on Foata normal form. 0/54796 useless extension candidates. Maximal degree in co-relation 134219. Up to 76294 conditions per place. [2022-12-13 16:04:11,969 INFO L137 encePairwiseOnDemand]: 437/466 looper letters, 77 selfloop transitions, 4 changer transitions 0/95 dead transitions. [2022-12-13 16:04:11,969 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 95 transitions, 385 flow [2022-12-13 16:04:11,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:04:11,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 16:04:11,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 764 transitions. [2022-12-13 16:04:11,970 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5464949928469242 [2022-12-13 16:04:11,971 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 764 transitions. [2022-12-13 16:04:11,971 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 764 transitions. [2022-12-13 16:04:11,971 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:04:11,971 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 764 transitions. [2022-12-13 16:04:11,973 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 254.66666666666666) internal successors, (764), 3 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:04:11,974 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 466.0) internal successors, (1864), 4 states have internal predecessors, (1864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:04:11,975 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 466.0) internal successors, (1864), 4 states have internal predecessors, (1864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:04:11,975 INFO L175 Difference]: Start difference. First operand has 100 places, 105 transitions, 231 flow. Second operand 3 states and 764 transitions. [2022-12-13 16:04:11,975 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 95 transitions, 385 flow [2022-12-13 16:04:11,977 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 95 transitions, 377 flow, removed 4 selfloop flow, removed 0 redundant places. [2022-12-13 16:04:11,978 INFO L231 Difference]: Finished difference. Result has 87 places, 89 transitions, 229 flow [2022-12-13 16:04:11,978 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=466, PETRI_DIFFERENCE_MINUEND_FLOW=187, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=229, PETRI_PLACES=87, PETRI_TRANSITIONS=89} [2022-12-13 16:04:11,978 INFO L288 CegarLoopForPetriNet]: 100 programPoint places, -13 predicate places. [2022-12-13 16:04:11,978 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 89 transitions, 229 flow [2022-12-13 16:04:11,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 216.66666666666666) internal successors, (650), 3 states have internal predecessors, (650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:04:11,979 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:04:11,979 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:04:11,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 16:04:11,979 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2022-12-13 16:04:11,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:04:11,979 INFO L85 PathProgramCache]: Analyzing trace with hash 1391533595, now seen corresponding path program 1 times [2022-12-13 16:04:11,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:04:11,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918032468] [2022-12-13 16:04:11,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:04:11,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:04:11,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:04:12,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:04:12,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:04:12,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918032468] [2022-12-13 16:04:12,004 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918032468] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:04:12,004 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:04:12,004 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 16:04:12,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027492913] [2022-12-13 16:04:12,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:04:12,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:04:12,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:04:12,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:04:12,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:04:12,008 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 466 [2022-12-13 16:04:12,009 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 89 transitions, 229 flow. Second operand has 3 states, 3 states have (on average 217.33333333333334) internal successors, (652), 3 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:04:12,009 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:04:12,009 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 466 [2022-12-13 16:04:12,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:04:17,671 INFO L130 PetriNetUnfolder]: 54915/76739 cut-off events. [2022-12-13 16:04:17,671 INFO L131 PetriNetUnfolder]: For 4028/4028 co-relation queries the response was YES. [2022-12-13 16:04:17,765 INFO L83 FinitePrefix]: Finished finitePrefix Result has 164725 conditions, 76739 events. 54915/76739 cut-off events. For 4028/4028 co-relation queries the response was YES. Maximal size of possible extension queue 2462. Compared 550158 event pairs, 43935 based on Foata normal form. 968/55032 useless extension candidates. Maximal degree in co-relation 125057. Up to 71702 conditions per place. [2022-12-13 16:04:18,022 INFO L137 encePairwiseOnDemand]: 464/466 looper letters, 121 selfloop transitions, 1 changer transitions 0/136 dead transitions. [2022-12-13 16:04:18,022 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 136 transitions, 593 flow [2022-12-13 16:04:18,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:04:18,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 16:04:18,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 765 transitions. [2022-12-13 16:04:18,024 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5472103004291845 [2022-12-13 16:04:18,024 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 765 transitions. [2022-12-13 16:04:18,025 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 765 transitions. [2022-12-13 16:04:18,025 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:04:18,025 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 765 transitions. [2022-12-13 16:04:18,026 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 255.0) internal successors, (765), 3 states have internal predecessors, (765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:04:18,028 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 466.0) internal successors, (1864), 4 states have internal predecessors, (1864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:04:18,029 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 466.0) internal successors, (1864), 4 states have internal predecessors, (1864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:04:18,029 INFO L175 Difference]: Start difference. First operand has 87 places, 89 transitions, 229 flow. Second operand 3 states and 765 transitions. [2022-12-13 16:04:18,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 136 transitions, 593 flow [2022-12-13 16:04:18,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 136 transitions, 589 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 16:04:18,032 INFO L231 Difference]: Finished difference. Result has 88 places, 88 transitions, 225 flow [2022-12-13 16:04:18,032 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=466, PETRI_DIFFERENCE_MINUEND_FLOW=223, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=225, PETRI_PLACES=88, PETRI_TRANSITIONS=88} [2022-12-13 16:04:18,032 INFO L288 CegarLoopForPetriNet]: 100 programPoint places, -12 predicate places. [2022-12-13 16:04:18,032 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 88 transitions, 225 flow [2022-12-13 16:04:18,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 217.33333333333334) internal successors, (652), 3 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:04:18,033 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:04:18,033 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:04:18,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 16:04:18,033 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2022-12-13 16:04:18,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:04:18,033 INFO L85 PathProgramCache]: Analyzing trace with hash 1391398435, now seen corresponding path program 1 times [2022-12-13 16:04:18,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:04:18,033 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362717673] [2022-12-13 16:04:18,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:04:18,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:04:18,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:04:18,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:04:18,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:04:18,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362717673] [2022-12-13 16:04:18,107 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362717673] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:04:18,107 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:04:18,107 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 16:04:18,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270492000] [2022-12-13 16:04:18,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:04:18,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 16:04:18,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:04:18,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 16:04:18,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 16:04:18,189 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 206 out of 466 [2022-12-13 16:04:18,190 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 88 transitions, 225 flow. Second operand has 5 states, 5 states have (on average 207.6) internal successors, (1038), 5 states have internal predecessors, (1038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:04:18,190 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:04:18,190 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 206 of 466 [2022-12-13 16:04:18,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:04:24,248 INFO L130 PetriNetUnfolder]: 61009/85248 cut-off events. [2022-12-13 16:04:24,248 INFO L131 PetriNetUnfolder]: For 5373/5373 co-relation queries the response was YES. [2022-12-13 16:04:24,379 INFO L83 FinitePrefix]: Finished finitePrefix Result has 184296 conditions, 85248 events. 61009/85248 cut-off events. For 5373/5373 co-relation queries the response was YES. Maximal size of possible extension queue 2689. Compared 616602 event pairs, 25496 based on Foata normal form. 62/60953 useless extension candidates. Maximal degree in co-relation 175806. Up to 79960 conditions per place. [2022-12-13 16:04:24,722 INFO L137 encePairwiseOnDemand]: 453/466 looper letters, 149 selfloop transitions, 14 changer transitions 0/176 dead transitions. [2022-12-13 16:04:24,722 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 176 transitions, 815 flow [2022-12-13 16:04:24,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 16:04:24,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 16:04:24,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1406 transitions. [2022-12-13 16:04:24,725 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5028612303290415 [2022-12-13 16:04:24,725 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1406 transitions. [2022-12-13 16:04:24,725 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1406 transitions. [2022-12-13 16:04:24,726 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:04:24,726 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1406 transitions. [2022-12-13 16:04:24,729 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 234.33333333333334) internal successors, (1406), 6 states have internal predecessors, (1406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:04:24,733 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 466.0) internal successors, (3262), 7 states have internal predecessors, (3262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:04:24,734 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 466.0) internal successors, (3262), 7 states have internal predecessors, (3262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:04:24,734 INFO L175 Difference]: Start difference. First operand has 88 places, 88 transitions, 225 flow. Second operand 6 states and 1406 transitions. [2022-12-13 16:04:24,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 176 transitions, 815 flow [2022-12-13 16:04:24,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 176 transitions, 814 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 16:04:24,742 INFO L231 Difference]: Finished difference. Result has 95 places, 98 transitions, 328 flow [2022-12-13 16:04:24,742 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=466, PETRI_DIFFERENCE_MINUEND_FLOW=224, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=328, PETRI_PLACES=95, PETRI_TRANSITIONS=98} [2022-12-13 16:04:24,742 INFO L288 CegarLoopForPetriNet]: 100 programPoint places, -5 predicate places. [2022-12-13 16:04:24,743 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 98 transitions, 328 flow [2022-12-13 16:04:24,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 207.6) internal successors, (1038), 5 states have internal predecessors, (1038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:04:24,743 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:04:24,743 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:04:24,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 16:04:24,744 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2022-12-13 16:04:24,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:04:24,744 INFO L85 PathProgramCache]: Analyzing trace with hash -1497780677, now seen corresponding path program 1 times [2022-12-13 16:04:24,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:04:24,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293354913] [2022-12-13 16:04:24,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:04:24,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:04:24,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:04:24,943 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:04:24,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:04:24,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293354913] [2022-12-13 16:04:24,943 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [293354913] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:04:24,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1272412528] [2022-12-13 16:04:24,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:04:24,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:04:24,944 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c893c70-14bc-4fc1-b510-57f4eca23568/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:04:24,945 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c893c70-14bc-4fc1-b510-57f4eca23568/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:04:24,946 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c893c70-14bc-4fc1-b510-57f4eca23568/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 16:04:25,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:04:25,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 23 conjunts are in the unsatisfiable core [2022-12-13 16:04:25,029 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:04:25,077 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-13 16:04:25,120 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-13 16:04:25,120 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-12-13 16:04:25,171 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-13 16:04:25,207 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-13 16:04:25,229 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-13 16:04:25,239 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:04:25,239 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 16:04:25,271 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_103 (Array Int Int))) (< 0 (+ 2147483649 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t~0#1.base| v_ArrVal_103) |c_thr1Thread1of3ForFork0_push_~#newTop~0#1.base|) |c_thr1Thread1of3ForFork0_push_~#newTop~0#1.offset|)))) is different from false [2022-12-13 16:04:25,325 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 16:04:25,325 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 44 treesize of output 58 [2022-12-13 16:04:25,341 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 16:04:25,341 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 8 [2022-12-13 16:04:25,388 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 50 [2022-12-13 16:04:25,394 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2022-12-13 16:04:25,400 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2022-12-13 16:04:25,409 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 37 [2022-12-13 16:04:25,413 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 30 [2022-12-13 16:04:25,633 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2022-12-13 16:04:25,634 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1272412528] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 16:04:25,634 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 16:04:25,634 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 14 [2022-12-13 16:04:25,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029326005] [2022-12-13 16:04:25,634 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 16:04:25,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-13 16:04:25,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:04:25,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-13 16:04:25,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=171, Unknown=1, NotChecked=26, Total=240 [2022-12-13 16:04:25,751 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 466 [2022-12-13 16:04:25,753 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 98 transitions, 328 flow. Second operand has 16 states, 16 states have (on average 156.6875) internal successors, (2507), 16 states have internal predecessors, (2507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:04:25,753 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:04:25,753 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 466 [2022-12-13 16:04:25,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:04:41,948 INFO L130 PetriNetUnfolder]: 117521/167425 cut-off events. [2022-12-13 16:04:41,949 INFO L131 PetriNetUnfolder]: For 116910/116967 co-relation queries the response was YES. [2022-12-13 16:04:42,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 445589 conditions, 167425 events. 117521/167425 cut-off events. For 116910/116967 co-relation queries the response was YES. Maximal size of possible extension queue 5159. Compared 1293492 event pairs, 16685 based on Foata normal form. 1675/136712 useless extension candidates. Maximal degree in co-relation 443041. Up to 97096 conditions per place. [2022-12-13 16:04:42,871 INFO L137 encePairwiseOnDemand]: 399/466 looper letters, 905 selfloop transitions, 262 changer transitions 0/1175 dead transitions. [2022-12-13 16:04:42,871 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 1175 transitions, 5738 flow [2022-12-13 16:04:42,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-12-13 16:04:42,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-12-13 16:04:42,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 6053 transitions. [2022-12-13 16:04:42,881 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.419008722137616 [2022-12-13 16:04:42,881 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 6053 transitions. [2022-12-13 16:04:42,881 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 6053 transitions. [2022-12-13 16:04:42,883 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:04:42,883 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 6053 transitions. [2022-12-13 16:04:42,891 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 195.25806451612902) internal successors, (6053), 31 states have internal predecessors, (6053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:04:42,903 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 466.0) internal successors, (14912), 32 states have internal predecessors, (14912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:04:42,906 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 466.0) internal successors, (14912), 32 states have internal predecessors, (14912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:04:42,906 INFO L175 Difference]: Start difference. First operand has 95 places, 98 transitions, 328 flow. Second operand 31 states and 6053 transitions. [2022-12-13 16:04:42,906 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 1175 transitions, 5738 flow [2022-12-13 16:04:43,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 1175 transitions, 5732 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 16:04:43,008 INFO L231 Difference]: Finished difference. Result has 151 places, 392 transitions, 3064 flow [2022-12-13 16:04:43,008 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=466, PETRI_DIFFERENCE_MINUEND_FLOW=324, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=3064, PETRI_PLACES=151, PETRI_TRANSITIONS=392} [2022-12-13 16:04:43,009 INFO L288 CegarLoopForPetriNet]: 100 programPoint places, 51 predicate places. [2022-12-13 16:04:43,009 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 392 transitions, 3064 flow [2022-12-13 16:04:43,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 156.6875) internal successors, (2507), 16 states have internal predecessors, (2507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:04:43,011 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:04:43,011 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:04:43,017 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c893c70-14bc-4fc1-b510-57f4eca23568/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 16:04:43,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c893c70-14bc-4fc1-b510-57f4eca23568/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:04:43,213 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2022-12-13 16:04:43,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:04:43,214 INFO L85 PathProgramCache]: Analyzing trace with hash 1902081380, now seen corresponding path program 1 times [2022-12-13 16:04:43,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:04:43,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611519222] [2022-12-13 16:04:43,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:04:43,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:04:43,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:04:43,352 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 16:04:43,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:04:43,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611519222] [2022-12-13 16:04:43,352 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611519222] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:04:43,352 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:04:43,352 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 16:04:43,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434942242] [2022-12-13 16:04:43,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:04:43,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 16:04:43,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:04:43,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 16:04:43,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 16:04:43,356 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 466 [2022-12-13 16:04:43,358 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 392 transitions, 3064 flow. Second operand has 4 states, 4 states have (on average 217.0) internal successors, (868), 4 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:04:43,358 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:04:43,358 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 466 [2022-12-13 16:04:43,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:04:58,171 INFO L130 PetriNetUnfolder]: 72792/102943 cut-off events. [2022-12-13 16:04:58,171 INFO L131 PetriNetUnfolder]: For 1973365/1978555 co-relation queries the response was YES. [2022-12-13 16:04:58,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 620895 conditions, 102943 events. 72792/102943 cut-off events. For 1973365/1978555 co-relation queries the response was YES. Maximal size of possible extension queue 3108. Compared 746972 event pairs, 31983 based on Foata normal form. 5209/94077 useless extension candidates. Maximal degree in co-relation 584266. Up to 97407 conditions per place. [2022-12-13 16:04:59,153 INFO L137 encePairwiseOnDemand]: 456/466 looper letters, 210 selfloop transitions, 6 changer transitions 0/235 dead transitions. [2022-12-13 16:04:59,153 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 235 transitions, 2227 flow [2022-12-13 16:04:59,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 16:04:59,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 16:04:59,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 940 transitions. [2022-12-13 16:04:59,158 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5042918454935622 [2022-12-13 16:04:59,158 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 940 transitions. [2022-12-13 16:04:59,158 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 940 transitions. [2022-12-13 16:04:59,159 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:04:59,160 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 940 transitions. [2022-12-13 16:04:59,163 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 235.0) internal successors, (940), 4 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:04:59,165 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 466.0) internal successors, (2330), 5 states have internal predecessors, (2330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:04:59,165 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 466.0) internal successors, (2330), 5 states have internal predecessors, (2330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:04:59,166 INFO L175 Difference]: Start difference. First operand has 151 places, 392 transitions, 3064 flow. Second operand 4 states and 940 transitions. [2022-12-13 16:04:59,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 235 transitions, 2227 flow [2022-12-13 16:05:21,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 235 transitions, 1993 flow, removed 114 selfloop flow, removed 12 redundant places. [2022-12-13 16:05:21,491 INFO L231 Difference]: Finished difference. Result has 124 places, 230 transitions, 1521 flow [2022-12-13 16:05:21,492 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=466, PETRI_DIFFERENCE_MINUEND_FLOW=1509, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1521, PETRI_PLACES=124, PETRI_TRANSITIONS=230} [2022-12-13 16:05:21,492 INFO L288 CegarLoopForPetriNet]: 100 programPoint places, 24 predicate places. [2022-12-13 16:05:21,492 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 230 transitions, 1521 flow [2022-12-13 16:05:21,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 217.0) internal successors, (868), 4 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:05:21,492 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:05:21,492 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:05:21,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 16:05:21,492 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2022-12-13 16:05:21,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:05:21,493 INFO L85 PathProgramCache]: Analyzing trace with hash 275033645, now seen corresponding path program 1 times [2022-12-13 16:05:21,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:05:21,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243540475] [2022-12-13 16:05:21,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:05:21,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:05:21,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:05:21,593 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 16:05:21,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:05:21,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243540475] [2022-12-13 16:05:21,593 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243540475] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:05:21,593 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:05:21,593 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 16:05:21,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746129963] [2022-12-13 16:05:21,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:05:21,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 16:05:21,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:05:21,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 16:05:21,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 16:05:21,690 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 206 out of 466 [2022-12-13 16:05:21,691 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 230 transitions, 1521 flow. Second operand has 5 states, 5 states have (on average 207.8) internal successors, (1039), 5 states have internal predecessors, (1039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:05:21,691 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:05:21,691 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 206 of 466 [2022-12-13 16:05:21,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:05:33,834 INFO L130 PetriNetUnfolder]: 79003/111466 cut-off events. [2022-12-13 16:05:33,834 INFO L131 PetriNetUnfolder]: For 805053/808737 co-relation queries the response was YES. [2022-12-13 16:05:34,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 536815 conditions, 111466 events. 79003/111466 cut-off events. For 805053/808737 co-relation queries the response was YES. Maximal size of possible extension queue 3361. Compared 815771 event pairs, 33666 based on Foata normal form. 1144/98136 useless extension candidates. Maximal degree in co-relation 503898. Up to 102731 conditions per place. [2022-12-13 16:05:34,837 INFO L137 encePairwiseOnDemand]: 453/466 looper letters, 296 selfloop transitions, 19 changer transitions 0/333 dead transitions. [2022-12-13 16:05:34,837 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 333 transitions, 2910 flow [2022-12-13 16:05:34,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 16:05:34,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 16:05:34,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1382 transitions. [2022-12-13 16:05:34,840 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49427753934191704 [2022-12-13 16:05:34,840 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1382 transitions. [2022-12-13 16:05:34,840 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1382 transitions. [2022-12-13 16:05:34,840 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:05:34,840 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1382 transitions. [2022-12-13 16:05:34,842 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 230.33333333333334) internal successors, (1382), 6 states have internal predecessors, (1382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:05:34,845 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 466.0) internal successors, (3262), 7 states have internal predecessors, (3262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:05:34,845 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 466.0) internal successors, (3262), 7 states have internal predecessors, (3262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:05:34,845 INFO L175 Difference]: Start difference. First operand has 124 places, 230 transitions, 1521 flow. Second operand 6 states and 1382 transitions. [2022-12-13 16:05:34,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 333 transitions, 2910 flow [2022-12-13 16:05:37,340 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 333 transitions, 2903 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 16:05:37,343 INFO L231 Difference]: Finished difference. Result has 130 places, 243 transitions, 1743 flow [2022-12-13 16:05:37,343 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=466, PETRI_DIFFERENCE_MINUEND_FLOW=1514, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1743, PETRI_PLACES=130, PETRI_TRANSITIONS=243} [2022-12-13 16:05:37,344 INFO L288 CegarLoopForPetriNet]: 100 programPoint places, 30 predicate places. [2022-12-13 16:05:37,344 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 243 transitions, 1743 flow [2022-12-13 16:05:37,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 207.8) internal successors, (1039), 5 states have internal predecessors, (1039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:05:37,344 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:05:37,345 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2022-12-13 16:05:37,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 16:05:37,345 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2022-12-13 16:05:37,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:05:37,345 INFO L85 PathProgramCache]: Analyzing trace with hash 71384074, now seen corresponding path program 1 times [2022-12-13 16:05:37,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:05:37,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378503368] [2022-12-13 16:05:37,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:05:37,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:05:37,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 16:05:37,352 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 16:05:37,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 16:05:37,358 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 16:05:37,358 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 16:05:37,359 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (40 of 41 remaining) [2022-12-13 16:05:37,359 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (39 of 41 remaining) [2022-12-13 16:05:37,359 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (38 of 41 remaining) [2022-12-13 16:05:37,359 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (37 of 41 remaining) [2022-12-13 16:05:37,359 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (36 of 41 remaining) [2022-12-13 16:05:37,359 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (35 of 41 remaining) [2022-12-13 16:05:37,359 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (34 of 41 remaining) [2022-12-13 16:05:37,359 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (33 of 41 remaining) [2022-12-13 16:05:37,359 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (32 of 41 remaining) [2022-12-13 16:05:37,359 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (31 of 41 remaining) [2022-12-13 16:05:37,359 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (30 of 41 remaining) [2022-12-13 16:05:37,359 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 41 remaining) [2022-12-13 16:05:37,359 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 41 remaining) [2022-12-13 16:05:37,359 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 41 remaining) [2022-12-13 16:05:37,359 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 41 remaining) [2022-12-13 16:05:37,360 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 41 remaining) [2022-12-13 16:05:37,360 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 41 remaining) [2022-12-13 16:05:37,360 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 41 remaining) [2022-12-13 16:05:37,360 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 41 remaining) [2022-12-13 16:05:37,360 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 41 remaining) [2022-12-13 16:05:37,360 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 41 remaining) [2022-12-13 16:05:37,360 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 41 remaining) [2022-12-13 16:05:37,360 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 41 remaining) [2022-12-13 16:05:37,360 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 41 remaining) [2022-12-13 16:05:37,360 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 41 remaining) [2022-12-13 16:05:37,360 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 41 remaining) [2022-12-13 16:05:37,360 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 41 remaining) [2022-12-13 16:05:37,360 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 41 remaining) [2022-12-13 16:05:37,360 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 41 remaining) [2022-12-13 16:05:37,360 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 41 remaining) [2022-12-13 16:05:37,361 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 41 remaining) [2022-12-13 16:05:37,361 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 41 remaining) [2022-12-13 16:05:37,361 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 41 remaining) [2022-12-13 16:05:37,361 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 41 remaining) [2022-12-13 16:05:37,361 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 41 remaining) [2022-12-13 16:05:37,361 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 41 remaining) [2022-12-13 16:05:37,361 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 41 remaining) [2022-12-13 16:05:37,361 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 41 remaining) [2022-12-13 16:05:37,361 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 41 remaining) [2022-12-13 16:05:37,361 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 41 remaining) [2022-12-13 16:05:37,361 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 41 remaining) [2022-12-13 16:05:37,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-13 16:05:37,361 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:05:37,362 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-13 16:05:37,362 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-12-13 16:05:37,402 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-13 16:05:37,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 320 places, 344 transitions, 720 flow [2022-12-13 16:05:37,453 INFO L130 PetriNetUnfolder]: 37/394 cut-off events. [2022-12-13 16:05:37,453 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2022-12-13 16:05:37,456 INFO L83 FinitePrefix]: Finished finitePrefix Result has 417 conditions, 394 events. 37/394 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1535 event pairs, 0 based on Foata normal form. 0/312 useless extension candidates. Maximal degree in co-relation 321. Up to 10 conditions per place. [2022-12-13 16:05:37,456 INFO L82 GeneralOperation]: Start removeDead. Operand has 320 places, 344 transitions, 720 flow [2022-12-13 16:05:37,459 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 320 places, 344 transitions, 720 flow [2022-12-13 16:05:37,459 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 16:05:37,459 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 320 places, 344 transitions, 720 flow [2022-12-13 16:05:37,459 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 320 places, 344 transitions, 720 flow [2022-12-13 16:05:37,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 320 places, 344 transitions, 720 flow [2022-12-13 16:05:37,505 INFO L130 PetriNetUnfolder]: 37/394 cut-off events. [2022-12-13 16:05:37,505 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2022-12-13 16:05:37,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 417 conditions, 394 events. 37/394 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1535 event pairs, 0 based on Foata normal form. 0/312 useless extension candidates. Maximal degree in co-relation 321. Up to 10 conditions per place. [2022-12-13 16:05:37,522 INFO L119 LiptonReduction]: Number of co-enabled transitions 80696 [2022-12-13 16:05:39,664 INFO L134 LiptonReduction]: Checked pairs total: 206443 [2022-12-13 16:05:39,665 INFO L136 LiptonReduction]: Total number of compositions: 269 [2022-12-13 16:05:39,666 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 16:05:39,666 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=LoopsAndPotentialCycles, 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;@5d18379f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 16:05:39,666 INFO L358 AbstractCegarLoop]: Starting to check reachability of 51 error locations. [2022-12-13 16:05:39,668 INFO L130 PetriNetUnfolder]: 0/12 cut-off events. [2022-12-13 16:05:39,668 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 16:05:39,668 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:05:39,668 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:05:39,668 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2022-12-13 16:05:39,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:05:39,668 INFO L85 PathProgramCache]: Analyzing trace with hash 380563755, now seen corresponding path program 1 times [2022-12-13 16:05:39,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:05:39,669 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315767295] [2022-12-13 16:05:39,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:05:39,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:05:39,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:05:39,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:05:39,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:05:39,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315767295] [2022-12-13 16:05:39,690 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315767295] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:05:39,690 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:05:39,690 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 16:05:39,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823562128] [2022-12-13 16:05:39,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:05:39,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:05:39,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:05:39,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:05:39,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:05:39,693 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 277 out of 613 [2022-12-13 16:05:39,694 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 138 transitions, 308 flow. Second operand has 3 states, 3 states have (on average 278.6666666666667) internal successors, (836), 3 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:05:39,694 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:05:39,694 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 277 of 613 [2022-12-13 16:05:39,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:06:57,350 INFO L130 PetriNetUnfolder]: 779607/1014642 cut-off events. [2022-12-13 16:06:57,350 INFO L131 PetriNetUnfolder]: For 55860/55860 co-relation queries the response was YES. [2022-12-13 16:06:59,056 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2031226 conditions, 1014642 events. 779607/1014642 cut-off events. For 55860/55860 co-relation queries the response was YES. Maximal size of possible extension queue 22110. Compared 7548500 event pairs, 676203 based on Foata normal form. 0/769114 useless extension candidates. Maximal degree in co-relation 314662. Up to 987903 conditions per place. [2022-12-13 16:07:02,921 INFO L137 encePairwiseOnDemand]: 580/613 looper letters, 77 selfloop transitions, 1 changer transitions 0/99 dead transitions. [2022-12-13 16:07:02,922 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 99 transitions, 386 flow [2022-12-13 16:07:02,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:07:02,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 16:07:02,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 941 transitions. [2022-12-13 16:07:02,924 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5116911364872213 [2022-12-13 16:07:02,924 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 941 transitions. [2022-12-13 16:07:02,924 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 941 transitions. [2022-12-13 16:07:02,925 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:07:02,925 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 941 transitions. [2022-12-13 16:07:02,926 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 313.6666666666667) internal successors, (941), 3 states have internal predecessors, (941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:07:02,928 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 613.0) internal successors, (2452), 4 states have internal predecessors, (2452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:07:02,928 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 613.0) internal successors, (2452), 4 states have internal predecessors, (2452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:07:02,929 INFO L175 Difference]: Start difference. First operand has 131 places, 138 transitions, 308 flow. Second operand 3 states and 941 transitions. [2022-12-13 16:07:02,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 99 transitions, 386 flow [2022-12-13 16:07:02,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 99 transitions, 374 flow, removed 6 selfloop flow, removed 0 redundant places. [2022-12-13 16:07:02,954 INFO L231 Difference]: Finished difference. Result has 101 places, 99 transitions, 220 flow [2022-12-13 16:07:02,954 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=613, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=220, PETRI_PLACES=101, PETRI_TRANSITIONS=99} [2022-12-13 16:07:02,954 INFO L288 CegarLoopForPetriNet]: 131 programPoint places, -30 predicate places. [2022-12-13 16:07:02,955 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 99 transitions, 220 flow [2022-12-13 16:07:02,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 278.6666666666667) internal successors, (836), 3 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:07:02,955 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:07:02,955 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:07:02,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-13 16:07:02,955 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2022-12-13 16:07:02,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:07:02,956 INFO L85 PathProgramCache]: Analyzing trace with hash 380563756, now seen corresponding path program 1 times [2022-12-13 16:07:02,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:07:02,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242869428] [2022-12-13 16:07:02,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:07:02,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:07:02,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:07:02,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:07:02,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:07:02,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242869428] [2022-12-13 16:07:02,972 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242869428] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:07:02,972 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:07:02,972 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 16:07:02,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634542681] [2022-12-13 16:07:02,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:07:02,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:07:02,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:07:02,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:07:02,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:07:02,975 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 277 out of 613 [2022-12-13 16:07:02,976 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 99 transitions, 220 flow. Second operand has 3 states, 3 states have (on average 278.6666666666667) internal successors, (836), 3 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:07:02,976 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:07:02,976 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 277 of 613 [2022-12-13 16:07:02,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand