./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_41-trylock_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84e55832-1c7c-4cb5-a056-bf2ca7eaddb5/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84e55832-1c7c-4cb5-a056-bf2ca7eaddb5/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84e55832-1c7c-4cb5-a056-bf2ca7eaddb5/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84e55832-1c7c-4cb5-a056-bf2ca7eaddb5/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_41-trylock_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84e55832-1c7c-4cb5-a056-bf2ca7eaddb5/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84e55832-1c7c-4cb5-a056-bf2ca7eaddb5/bin/uautomizer-ug76WZFUDN --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 af00d5f4cc6a18cb9fd8a5151467217fe3ddb5ee0fa30b2cfbd9dd374105ee15 --- 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-6b4ec56 [2022-11-20 12:32:06,196 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 12:32:06,198 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 12:32:06,215 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 12:32:06,215 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 12:32:06,220 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 12:32:06,221 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 12:32:06,223 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 12:32:06,225 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 12:32:06,226 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 12:32:06,227 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 12:32:06,228 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 12:32:06,229 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 12:32:06,230 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 12:32:06,231 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 12:32:06,232 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 12:32:06,233 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 12:32:06,233 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 12:32:06,240 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 12:32:06,247 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 12:32:06,250 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 12:32:06,255 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 12:32:06,256 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 12:32:06,257 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 12:32:06,260 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 12:32:06,260 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 12:32:06,260 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 12:32:06,261 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 12:32:06,262 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 12:32:06,271 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 12:32:06,271 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 12:32:06,272 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 12:32:06,274 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 12:32:06,275 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 12:32:06,276 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 12:32:06,276 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 12:32:06,277 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 12:32:06,277 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 12:32:06,277 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 12:32:06,279 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 12:32:06,279 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 12:32:06,280 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84e55832-1c7c-4cb5-a056-bf2ca7eaddb5/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-20 12:32:06,319 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 12:32:06,319 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 12:32:06,320 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 12:32:06,320 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 12:32:06,321 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 12:32:06,321 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 12:32:06,322 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 12:32:06,322 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 12:32:06,322 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 12:32:06,323 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 12:32:06,324 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 12:32:06,324 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 12:32:06,324 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 12:32:06,325 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 12:32:06,325 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 12:32:06,325 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 12:32:06,325 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 12:32:06,325 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 12:32:06,326 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-20 12:32:06,326 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 12:32:06,326 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 12:32:06,326 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 12:32:06,327 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 12:32:06,327 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 12:32:06,327 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 12:32:06,327 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 12:32:06,328 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:32:06,328 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 12:32:06,328 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 12:32:06,328 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 12:32:06,329 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 12:32:06,329 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 12:32:06,329 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 12:32:06,329 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 12:32:06,330 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 12:32:06,330 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_84e55832-1c7c-4cb5-a056-bf2ca7eaddb5/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84e55832-1c7c-4cb5-a056-bf2ca7eaddb5/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> af00d5f4cc6a18cb9fd8a5151467217fe3ddb5ee0fa30b2cfbd9dd374105ee15 [2022-11-20 12:32:06,621 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 12:32:06,657 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 12:32:06,660 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 12:32:06,661 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 12:32:06,661 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 12:32:06,663 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84e55832-1c7c-4cb5-a056-bf2ca7eaddb5/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/goblint-regression/28-race_reach_41-trylock_racefree.i [2022-11-20 12:32:09,795 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 12:32:10,073 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 12:32:10,073 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84e55832-1c7c-4cb5-a056-bf2ca7eaddb5/sv-benchmarks/c/goblint-regression/28-race_reach_41-trylock_racefree.i [2022-11-20 12:32:10,087 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84e55832-1c7c-4cb5-a056-bf2ca7eaddb5/bin/uautomizer-ug76WZFUDN/data/ee56b7550/aa17101c3f634411974d937d9908a0d9/FLAG5e4cb7fe3 [2022-11-20 12:32:10,102 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84e55832-1c7c-4cb5-a056-bf2ca7eaddb5/bin/uautomizer-ug76WZFUDN/data/ee56b7550/aa17101c3f634411974d937d9908a0d9 [2022-11-20 12:32:10,105 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 12:32:10,106 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 12:32:10,108 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 12:32:10,108 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 12:32:10,112 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 12:32:10,113 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:32:10" (1/1) ... [2022-11-20 12:32:10,114 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64bb2437 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:32:10, skipping insertion in model container [2022-11-20 12:32:10,114 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:32:10" (1/1) ... [2022-11-20 12:32:10,122 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 12:32:10,171 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 12:32:10,511 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_84e55832-1c7c-4cb5-a056-bf2ca7eaddb5/sv-benchmarks/c/goblint-regression/28-race_reach_41-trylock_racefree.i[30176,30189] [2022-11-20 12:32:10,533 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:32:10,547 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 12:32:10,580 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_84e55832-1c7c-4cb5-a056-bf2ca7eaddb5/sv-benchmarks/c/goblint-regression/28-race_reach_41-trylock_racefree.i[30176,30189] [2022-11-20 12:32:10,588 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:32:10,624 INFO L208 MainTranslator]: Completed translation [2022-11-20 12:32:10,625 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:32:10 WrapperNode [2022-11-20 12:32:10,625 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 12:32:10,626 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 12:32:10,626 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 12:32:10,627 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 12:32:10,634 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:32:10" (1/1) ... [2022-11-20 12:32:10,648 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:32:10" (1/1) ... [2022-11-20 12:32:10,669 INFO L138 Inliner]: procedures = 171, calls = 30, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 81 [2022-11-20 12:32:10,670 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 12:32:10,671 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 12:32:10,671 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 12:32:10,673 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 12:32:10,682 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:32:10" (1/1) ... [2022-11-20 12:32:10,684 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:32:10" (1/1) ... [2022-11-20 12:32:10,696 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:32:10" (1/1) ... [2022-11-20 12:32:10,702 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:32:10" (1/1) ... [2022-11-20 12:32:10,709 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:32:10" (1/1) ... [2022-11-20 12:32:10,714 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:32:10" (1/1) ... [2022-11-20 12:32:10,716 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:32:10" (1/1) ... [2022-11-20 12:32:10,717 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:32:10" (1/1) ... [2022-11-20 12:32:10,720 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 12:32:10,727 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 12:32:10,728 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 12:32:10,728 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 12:32:10,729 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:32:10" (1/1) ... [2022-11-20 12:32:10,736 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:32:10,748 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84e55832-1c7c-4cb5-a056-bf2ca7eaddb5/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:32:10,766 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84e55832-1c7c-4cb5-a056-bf2ca7eaddb5/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 12:32:10,788 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84e55832-1c7c-4cb5-a056-bf2ca7eaddb5/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 12:32:10,811 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 12:32:10,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 12:32:10,812 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-20 12:32:10,812 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 12:32:10,812 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 12:32:10,812 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-20 12:32:10,813 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-20 12:32:10,813 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 12:32:10,813 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexTryLock [2022-11-20 12:32:10,813 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 12:32:10,813 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 12:32:10,813 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 12:32:10,815 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-20 12:32:10,969 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 12:32:10,971 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 12:32:11,360 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 12:32:11,367 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 12:32:11,367 INFO L300 CfgBuilder]: Removed 11 assume(true) statements. [2022-11-20 12:32:11,370 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:32:11 BoogieIcfgContainer [2022-11-20 12:32:11,370 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 12:32:11,372 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 12:32:11,373 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 12:32:11,376 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 12:32:11,376 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 12:32:10" (1/3) ... [2022-11-20 12:32:11,377 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76ce0865 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:32:11, skipping insertion in model container [2022-11-20 12:32:11,377 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:32:10" (2/3) ... [2022-11-20 12:32:11,378 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76ce0865 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:32:11, skipping insertion in model container [2022-11-20 12:32:11,378 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:32:11" (3/3) ... [2022-11-20 12:32:11,379 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_41-trylock_racefree.i [2022-11-20 12:32:11,392 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-20 12:32:11,404 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 12:32:11,404 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-11-20 12:32:11,405 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 12:32:11,488 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-11-20 12:32:11,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 113 places, 124 transitions, 256 flow [2022-11-20 12:32:11,598 INFO L130 PetriNetUnfolder]: 21/163 cut-off events. [2022-11-20 12:32:11,599 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-20 12:32:11,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 169 conditions, 163 events. 21/163 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 404 event pairs, 0 based on Foata normal form. 0/131 useless extension candidates. Maximal degree in co-relation 84. Up to 6 conditions per place. [2022-11-20 12:32:11,604 INFO L82 GeneralOperation]: Start removeDead. Operand has 113 places, 124 transitions, 256 flow [2022-11-20 12:32:11,609 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 111 places, 121 transitions, 250 flow [2022-11-20 12:32:11,617 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 12:32:11,624 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;@6ca6fe89, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 12:32:11,624 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2022-11-20 12:32:11,641 INFO L130 PetriNetUnfolder]: 4/66 cut-off events. [2022-11-20 12:32:11,641 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 12:32:11,642 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:32:11,642 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:32:11,643 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-20 12:32:11,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:32:11,648 INFO L85 PathProgramCache]: Analyzing trace with hash -1019498054, now seen corresponding path program 1 times [2022-11-20 12:32:11,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:32:11,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434950276] [2022-11-20 12:32:11,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:32:11,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:32:11,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:32:12,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:32:12,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:32:12,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434950276] [2022-11-20 12:32:12,042 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434950276] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:32:12,042 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:32:12,042 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:32:12,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126472286] [2022-11-20 12:32:12,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:32:12,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:32:12,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:32:12,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:32:12,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:32:12,101 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-11-20 12:32:12,109 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 121 transitions, 250 flow. Second operand has 4 states, 4 states have (on average 98.75) internal successors, (395), 4 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:32:12,109 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:32:12,109 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-11-20 12:32:12,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:32:12,237 INFO L130 PetriNetUnfolder]: 1/110 cut-off events. [2022-11-20 12:32:12,237 INFO L131 PetriNetUnfolder]: For 3/12 co-relation queries the response was YES. [2022-11-20 12:32:12,238 INFO L83 FinitePrefix]: Finished finitePrefix Result has 131 conditions, 110 events. 1/110 cut-off events. For 3/12 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 113 event pairs, 0 based on Foata normal form. 41/142 useless extension candidates. Maximal degree in co-relation 77. Up to 7 conditions per place. [2022-11-20 12:32:12,240 INFO L137 encePairwiseOnDemand]: 105/124 looper letters, 10 selfloop transitions, 4 changer transitions 0/108 dead transitions. [2022-11-20 12:32:12,240 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 108 transitions, 252 flow [2022-11-20 12:32:12,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:32:12,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 12:32:12,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 533 transitions. [2022-11-20 12:32:12,264 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8596774193548387 [2022-11-20 12:32:12,264 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 533 transitions. [2022-11-20 12:32:12,265 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 533 transitions. [2022-11-20 12:32:12,269 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:32:12,273 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 533 transitions. [2022-11-20 12:32:12,278 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 106.6) internal successors, (533), 5 states have internal predecessors, (533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:32:12,288 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:32:12,288 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:32:12,290 INFO L175 Difference]: Start difference. First operand has 111 places, 121 transitions, 250 flow. Second operand 5 states and 533 transitions. [2022-11-20 12:32:12,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 108 transitions, 252 flow [2022-11-20 12:32:12,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 108 transitions, 252 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 12:32:12,301 INFO L231 Difference]: Finished difference. Result has 113 places, 106 transitions, 232 flow [2022-11-20 12:32:12,303 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=232, PETRI_PLACES=113, PETRI_TRANSITIONS=106} [2022-11-20 12:32:12,308 INFO L288 CegarLoopForPetriNet]: 111 programPoint places, 2 predicate places. [2022-11-20 12:32:12,308 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 106 transitions, 232 flow [2022-11-20 12:32:12,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 98.75) internal successors, (395), 4 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:32:12,310 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:32:12,310 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:32:12,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 12:32:12,311 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-20 12:32:12,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:32:12,312 INFO L85 PathProgramCache]: Analyzing trace with hash 1610309868, now seen corresponding path program 1 times [2022-11-20 12:32:12,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:32:12,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927615846] [2022-11-20 12:32:12,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:32:12,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:32:12,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:32:12,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:32:12,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:32:12,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927615846] [2022-11-20 12:32:12,496 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927615846] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:32:12,496 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:32:12,496 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:32:12,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759157466] [2022-11-20 12:32:12,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:32:12,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:32:12,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:32:12,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:32:12,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:32:12,501 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 124 [2022-11-20 12:32:12,501 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 106 transitions, 232 flow. Second operand has 4 states, 4 states have (on average 99.0) internal successors, (396), 4 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:32:12,502 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:32:12,502 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 124 [2022-11-20 12:32:12,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:32:12,609 INFO L130 PetriNetUnfolder]: 8/194 cut-off events. [2022-11-20 12:32:12,610 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2022-11-20 12:32:12,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 234 conditions, 194 events. 8/194 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 534 event pairs, 4 based on Foata normal form. 0/178 useless extension candidates. Maximal degree in co-relation 180. Up to 11 conditions per place. [2022-11-20 12:32:12,612 INFO L137 encePairwiseOnDemand]: 118/124 looper letters, 10 selfloop transitions, 4 changer transitions 0/107 dead transitions. [2022-11-20 12:32:12,612 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 107 transitions, 262 flow [2022-11-20 12:32:12,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:32:12,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 12:32:12,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 506 transitions. [2022-11-20 12:32:12,614 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8161290322580645 [2022-11-20 12:32:12,615 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 506 transitions. [2022-11-20 12:32:12,615 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 506 transitions. [2022-11-20 12:32:12,615 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:32:12,615 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 506 transitions. [2022-11-20 12:32:12,617 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 101.2) internal successors, (506), 5 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:32:12,619 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:32:12,619 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:32:12,619 INFO L175 Difference]: Start difference. First operand has 113 places, 106 transitions, 232 flow. Second operand 5 states and 506 transitions. [2022-11-20 12:32:12,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 107 transitions, 262 flow [2022-11-20 12:32:12,621 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 107 transitions, 254 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-20 12:32:12,623 INFO L231 Difference]: Finished difference. Result has 111 places, 104 transitions, 228 flow [2022-11-20 12:32:12,624 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=228, PETRI_PLACES=111, PETRI_TRANSITIONS=104} [2022-11-20 12:32:12,625 INFO L288 CegarLoopForPetriNet]: 111 programPoint places, 0 predicate places. [2022-11-20 12:32:12,625 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 104 transitions, 228 flow [2022-11-20 12:32:12,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 99.0) internal successors, (396), 4 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:32:12,625 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:32:12,626 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:32:12,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 12:32:12,626 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-20 12:32:12,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:32:12,637 INFO L85 PathProgramCache]: Analyzing trace with hash 1671198555, now seen corresponding path program 1 times [2022-11-20 12:32:12,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:32:12,637 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121450804] [2022-11-20 12:32:12,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:32:12,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:32:12,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:32:12,694 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 12:32:12,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:32:12,761 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 12:32:12,761 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-20 12:32:12,763 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2022-11-20 12:32:12,766 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2022-11-20 12:32:12,766 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2022-11-20 12:32:12,767 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2022-11-20 12:32:12,767 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 13 remaining) [2022-11-20 12:32:12,768 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 13 remaining) [2022-11-20 12:32:12,768 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 13 remaining) [2022-11-20 12:32:12,769 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 13 remaining) [2022-11-20 12:32:12,769 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 13 remaining) [2022-11-20 12:32:12,769 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 13 remaining) [2022-11-20 12:32:12,770 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2022-11-20 12:32:12,770 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2022-11-20 12:32:12,770 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2022-11-20 12:32:12,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 12:32:12,771 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-11-20 12:32:12,775 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-20 12:32:12,775 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-20 12:32:12,831 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-20 12:32:12,841 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 146 places, 162 transitions, 342 flow [2022-11-20 12:32:12,892 INFO L130 PetriNetUnfolder]: 37/277 cut-off events. [2022-11-20 12:32:12,893 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-20 12:32:12,899 INFO L83 FinitePrefix]: Finished finitePrefix Result has 291 conditions, 277 events. 37/277 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 839 event pairs, 0 based on Foata normal form. 0/218 useless extension candidates. Maximal degree in co-relation 165. Up to 9 conditions per place. [2022-11-20 12:32:12,899 INFO L82 GeneralOperation]: Start removeDead. Operand has 146 places, 162 transitions, 342 flow [2022-11-20 12:32:12,903 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 146 places, 162 transitions, 342 flow [2022-11-20 12:32:12,905 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 12:32:12,912 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;@6ca6fe89, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 12:32:12,912 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2022-11-20 12:32:12,924 INFO L130 PetriNetUnfolder]: 4/68 cut-off events. [2022-11-20 12:32:12,925 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 12:32:12,926 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:32:12,926 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:32:12,926 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-20 12:32:12,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:32:12,927 INFO L85 PathProgramCache]: Analyzing trace with hash 903205022, now seen corresponding path program 1 times [2022-11-20 12:32:12,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:32:12,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892991158] [2022-11-20 12:32:12,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:32:12,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:32:12,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:32:13,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:32:13,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:32:13,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892991158] [2022-11-20 12:32:13,004 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892991158] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:32:13,005 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:32:13,005 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:32:13,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689039865] [2022-11-20 12:32:13,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:32:13,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:32:13,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:32:13,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:32:13,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:32:13,008 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 162 [2022-11-20 12:32:13,009 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 162 transitions, 342 flow. Second operand has 4 states, 4 states have (on average 128.75) internal successors, (515), 4 states have internal predecessors, (515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:32:13,009 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:32:13,009 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 162 [2022-11-20 12:32:13,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:32:13,097 INFO L130 PetriNetUnfolder]: 4/222 cut-off events. [2022-11-20 12:32:13,097 INFO L131 PetriNetUnfolder]: For 45/125 co-relation queries the response was YES. [2022-11-20 12:32:13,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 265 conditions, 222 events. 4/222 cut-off events. For 45/125 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 538 event pairs, 0 based on Foata normal form. 127/323 useless extension candidates. Maximal degree in co-relation 147. Up to 21 conditions per place. [2022-11-20 12:32:13,100 INFO L137 encePairwiseOnDemand]: 137/162 looper letters, 19 selfloop transitions, 4 changer transitions 0/150 dead transitions. [2022-11-20 12:32:13,100 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 150 transitions, 364 flow [2022-11-20 12:32:13,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:32:13,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 12:32:13,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 698 transitions. [2022-11-20 12:32:13,103 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8617283950617284 [2022-11-20 12:32:13,103 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 698 transitions. [2022-11-20 12:32:13,103 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 698 transitions. [2022-11-20 12:32:13,103 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:32:13,104 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 698 transitions. [2022-11-20 12:32:13,105 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 139.6) internal successors, (698), 5 states have internal predecessors, (698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:32:13,107 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 162.0) internal successors, (972), 6 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:32:13,108 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 162.0) internal successors, (972), 6 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:32:13,108 INFO L175 Difference]: Start difference. First operand has 146 places, 162 transitions, 342 flow. Second operand 5 states and 698 transitions. [2022-11-20 12:32:13,108 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 150 transitions, 364 flow [2022-11-20 12:32:13,110 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 150 transitions, 364 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 12:32:13,113 INFO L231 Difference]: Finished difference. Result has 152 places, 146 transitions, 336 flow [2022-11-20 12:32:13,113 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=304, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=336, PETRI_PLACES=152, PETRI_TRANSITIONS=146} [2022-11-20 12:32:13,114 INFO L288 CegarLoopForPetriNet]: 146 programPoint places, 6 predicate places. [2022-11-20 12:32:13,114 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 146 transitions, 336 flow [2022-11-20 12:32:13,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 128.75) internal successors, (515), 4 states have internal predecessors, (515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:32:13,115 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:32:13,115 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:32:13,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 12:32:13,115 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-20 12:32:13,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:32:13,116 INFO L85 PathProgramCache]: Analyzing trace with hash -1456503216, now seen corresponding path program 1 times [2022-11-20 12:32:13,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:32:13,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177080357] [2022-11-20 12:32:13,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:32:13,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:32:13,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:32:13,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:32:13,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:32:13,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177080357] [2022-11-20 12:32:13,202 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177080357] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:32:13,202 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:32:13,202 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:32:13,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642970082] [2022-11-20 12:32:13,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:32:13,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:32:13,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:32:13,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:32:13,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:32:13,205 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 162 [2022-11-20 12:32:13,206 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 146 transitions, 336 flow. Second operand has 4 states, 4 states have (on average 125.0) internal successors, (500), 4 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:32:13,206 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:32:13,206 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 162 [2022-11-20 12:32:13,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:32:13,502 INFO L130 PetriNetUnfolder]: 172/1015 cut-off events. [2022-11-20 12:32:13,502 INFO L131 PetriNetUnfolder]: For 95/95 co-relation queries the response was YES. [2022-11-20 12:32:13,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1410 conditions, 1015 events. 172/1015 cut-off events. For 95/95 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 7087 event pairs, 43 based on Foata normal form. 0/894 useless extension candidates. Maximal degree in co-relation 1350. Up to 207 conditions per place. [2022-11-20 12:32:13,511 INFO L137 encePairwiseOnDemand]: 155/162 looper letters, 36 selfloop transitions, 6 changer transitions 0/169 dead transitions. [2022-11-20 12:32:13,511 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 169 transitions, 484 flow [2022-11-20 12:32:13,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:32:13,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 12:32:13,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 666 transitions. [2022-11-20 12:32:13,513 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8222222222222222 [2022-11-20 12:32:13,514 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 666 transitions. [2022-11-20 12:32:13,514 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 666 transitions. [2022-11-20 12:32:13,514 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:32:13,514 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 666 transitions. [2022-11-20 12:32:13,516 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 133.2) internal successors, (666), 5 states have internal predecessors, (666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:32:13,518 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 162.0) internal successors, (972), 6 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:32:13,518 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 162.0) internal successors, (972), 6 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:32:13,518 INFO L175 Difference]: Start difference. First operand has 152 places, 146 transitions, 336 flow. Second operand 5 states and 666 transitions. [2022-11-20 12:32:13,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 169 transitions, 484 flow [2022-11-20 12:32:13,521 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 169 transitions, 482 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 12:32:13,523 INFO L231 Difference]: Finished difference. Result has 158 places, 151 transitions, 383 flow [2022-11-20 12:32:13,523 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=334, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=383, PETRI_PLACES=158, PETRI_TRANSITIONS=151} [2022-11-20 12:32:13,524 INFO L288 CegarLoopForPetriNet]: 146 programPoint places, 12 predicate places. [2022-11-20 12:32:13,524 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 151 transitions, 383 flow [2022-11-20 12:32:13,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 125.0) internal successors, (500), 4 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:32:13,525 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:32:13,525 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:32:13,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 12:32:13,525 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-20 12:32:13,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:32:13,526 INFO L85 PathProgramCache]: Analyzing trace with hash -1040293091, now seen corresponding path program 1 times [2022-11-20 12:32:13,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:32:13,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670987626] [2022-11-20 12:32:13,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:32:13,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:32:13,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:32:13,587 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 12:32:13,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:32:13,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670987626] [2022-11-20 12:32:13,588 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670987626] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:32:13,588 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:32:13,589 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:32:13,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918695020] [2022-11-20 12:32:13,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:32:13,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:32:13,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:32:13,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:32:13,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:32:13,591 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 162 [2022-11-20 12:32:13,592 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 151 transitions, 383 flow. Second operand has 4 states, 4 states have (on average 130.75) internal successors, (523), 4 states have internal predecessors, (523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:32:13,592 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:32:13,592 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 162 [2022-11-20 12:32:13,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:32:13,685 INFO L130 PetriNetUnfolder]: 7/348 cut-off events. [2022-11-20 12:32:13,685 INFO L131 PetriNetUnfolder]: For 104/238 co-relation queries the response was YES. [2022-11-20 12:32:13,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 442 conditions, 348 events. 7/348 cut-off events. For 104/238 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1224 event pairs, 0 based on Foata normal form. 16/328 useless extension candidates. Maximal degree in co-relation 295. Up to 16 conditions per place. [2022-11-20 12:32:13,688 INFO L137 encePairwiseOnDemand]: 156/162 looper letters, 11 selfloop transitions, 8 changer transitions 0/151 dead transitions. [2022-11-20 12:32:13,689 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 151 transitions, 419 flow [2022-11-20 12:32:13,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:32:13,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 12:32:13,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 652 transitions. [2022-11-20 12:32:13,691 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8049382716049382 [2022-11-20 12:32:13,692 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 652 transitions. [2022-11-20 12:32:13,692 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 652 transitions. [2022-11-20 12:32:13,692 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:32:13,692 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 652 transitions. [2022-11-20 12:32:13,694 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 130.4) internal successors, (652), 5 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) [2022-11-20 12:32:13,696 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 162.0) internal successors, (972), 6 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:32:13,697 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 162.0) internal successors, (972), 6 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:32:13,697 INFO L175 Difference]: Start difference. First operand has 158 places, 151 transitions, 383 flow. Second operand 5 states and 652 transitions. [2022-11-20 12:32:13,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 151 transitions, 419 flow [2022-11-20 12:32:13,699 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 151 transitions, 416 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 12:32:13,702 INFO L231 Difference]: Finished difference. Result has 161 places, 151 transitions, 400 flow [2022-11-20 12:32:13,702 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=376, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=400, PETRI_PLACES=161, PETRI_TRANSITIONS=151} [2022-11-20 12:32:13,703 INFO L288 CegarLoopForPetriNet]: 146 programPoint places, 15 predicate places. [2022-11-20 12:32:13,703 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 151 transitions, 400 flow [2022-11-20 12:32:13,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 130.75) internal successors, (523), 4 states have internal predecessors, (523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:32:13,704 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:32:13,704 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:32:13,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 12:32:13,705 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-20 12:32:13,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:32:13,705 INFO L85 PathProgramCache]: Analyzing trace with hash 2110652979, now seen corresponding path program 1 times [2022-11-20 12:32:13,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:32:13,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964563202] [2022-11-20 12:32:13,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:32:13,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:32:13,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:32:13,809 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:32:13,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:32:13,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964563202] [2022-11-20 12:32:13,809 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964563202] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:32:13,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1076346441] [2022-11-20 12:32:13,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:32:13,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:32:13,810 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84e55832-1c7c-4cb5-a056-bf2ca7eaddb5/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:32:13,814 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84e55832-1c7c-4cb5-a056-bf2ca7eaddb5/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:32:13,847 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84e55832-1c7c-4cb5-a056-bf2ca7eaddb5/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 12:32:13,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:32:13,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 12:32:13,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:32:14,030 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:32:14,030 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:32:14,031 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1076346441] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:32:14,031 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:32:14,031 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-20 12:32:14,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16317529] [2022-11-20 12:32:14,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:32:14,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:32:14,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:32:14,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:32:14,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:32:14,035 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 162 [2022-11-20 12:32:14,036 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 151 transitions, 400 flow. Second operand has 6 states, 6 states have (on average 129.66666666666666) internal successors, (778), 6 states have internal predecessors, (778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:32:14,036 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:32:14,036 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 162 [2022-11-20 12:32:14,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:32:14,166 INFO L130 PetriNetUnfolder]: 7/347 cut-off events. [2022-11-20 12:32:14,166 INFO L131 PetriNetUnfolder]: For 109/232 co-relation queries the response was YES. [2022-11-20 12:32:14,168 INFO L83 FinitePrefix]: Finished finitePrefix Result has 450 conditions, 347 events. 7/347 cut-off events. For 109/232 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1217 event pairs, 0 based on Foata normal form. 9/320 useless extension candidates. Maximal degree in co-relation 296. Up to 19 conditions per place. [2022-11-20 12:32:14,170 INFO L137 encePairwiseOnDemand]: 157/162 looper letters, 15 selfloop transitions, 6 changer transitions 0/153 dead transitions. [2022-11-20 12:32:14,170 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 153 transitions, 444 flow [2022-11-20 12:32:14,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 12:32:14,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 12:32:14,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 911 transitions. [2022-11-20 12:32:14,173 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8033509700176367 [2022-11-20 12:32:14,173 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 911 transitions. [2022-11-20 12:32:14,174 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 911 transitions. [2022-11-20 12:32:14,174 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:32:14,174 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 911 transitions. [2022-11-20 12:32:14,177 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 130.14285714285714) internal successors, (911), 7 states have internal predecessors, (911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:32:14,179 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 162.0) internal successors, (1296), 8 states have internal predecessors, (1296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:32:14,180 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 162.0) internal successors, (1296), 8 states have internal predecessors, (1296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:32:14,180 INFO L175 Difference]: Start difference. First operand has 161 places, 151 transitions, 400 flow. Second operand 7 states and 911 transitions. [2022-11-20 12:32:14,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 153 transitions, 444 flow [2022-11-20 12:32:14,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 153 transitions, 432 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 12:32:14,185 INFO L231 Difference]: Finished difference. Result has 163 places, 150 transitions, 396 flow [2022-11-20 12:32:14,185 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=384, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=396, PETRI_PLACES=163, PETRI_TRANSITIONS=150} [2022-11-20 12:32:14,186 INFO L288 CegarLoopForPetriNet]: 146 programPoint places, 17 predicate places. [2022-11-20 12:32:14,186 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 150 transitions, 396 flow [2022-11-20 12:32:14,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 129.66666666666666) internal successors, (778), 6 states have internal predecessors, (778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:32:14,187 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:32:14,187 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:32:14,199 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84e55832-1c7c-4cb5-a056-bf2ca7eaddb5/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 12:32:14,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84e55832-1c7c-4cb5-a056-bf2ca7eaddb5/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-20 12:32:14,399 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-20 12:32:14,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:32:14,400 INFO L85 PathProgramCache]: Analyzing trace with hash -1140156123, now seen corresponding path program 1 times [2022-11-20 12:32:14,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:32:14,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222369264] [2022-11-20 12:32:14,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:32:14,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:32:14,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:32:14,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:32:14,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:32:14,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222369264] [2022-11-20 12:32:14,602 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222369264] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:32:14,602 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:32:14,602 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:32:14,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335938418] [2022-11-20 12:32:14,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:32:14,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:32:14,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:32:14,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:32:14,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:32:14,606 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 162 [2022-11-20 12:32:14,607 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 150 transitions, 396 flow. Second operand has 6 states, 6 states have (on average 120.5) internal successors, (723), 6 states have internal predecessors, (723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:32:14,607 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:32:14,607 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 162 [2022-11-20 12:32:14,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:32:15,162 INFO L130 PetriNetUnfolder]: 344/1721 cut-off events. [2022-11-20 12:32:15,162 INFO L131 PetriNetUnfolder]: For 316/322 co-relation queries the response was YES. [2022-11-20 12:32:15,169 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2640 conditions, 1721 events. 344/1721 cut-off events. For 316/322 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 13984 event pairs, 70 based on Foata normal form. 3/1515 useless extension candidates. Maximal degree in co-relation 1917. Up to 237 conditions per place. [2022-11-20 12:32:15,180 INFO L137 encePairwiseOnDemand]: 151/162 looper letters, 60 selfloop transitions, 19 changer transitions 0/200 dead transitions. [2022-11-20 12:32:15,180 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 200 transitions, 704 flow [2022-11-20 12:32:15,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 12:32:15,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-20 12:32:15,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1152 transitions. [2022-11-20 12:32:15,184 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7901234567901234 [2022-11-20 12:32:15,184 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1152 transitions. [2022-11-20 12:32:15,184 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1152 transitions. [2022-11-20 12:32:15,185 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:32:15,185 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1152 transitions. [2022-11-20 12:32:15,188 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 128.0) internal successors, (1152), 9 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:32:15,191 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 162.0) internal successors, (1620), 10 states have internal predecessors, (1620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:32:15,191 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 162.0) internal successors, (1620), 10 states have internal predecessors, (1620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:32:15,192 INFO L175 Difference]: Start difference. First operand has 163 places, 150 transitions, 396 flow. Second operand 9 states and 1152 transitions. [2022-11-20 12:32:15,192 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 200 transitions, 704 flow [2022-11-20 12:32:15,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 200 transitions, 693 flow, removed 1 selfloop flow, removed 5 redundant places. [2022-11-20 12:32:15,200 INFO L231 Difference]: Finished difference. Result has 172 places, 162 transitions, 511 flow [2022-11-20 12:32:15,200 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=385, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=511, PETRI_PLACES=172, PETRI_TRANSITIONS=162} [2022-11-20 12:32:15,201 INFO L288 CegarLoopForPetriNet]: 146 programPoint places, 26 predicate places. [2022-11-20 12:32:15,204 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 162 transitions, 511 flow [2022-11-20 12:32:15,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 120.5) internal successors, (723), 6 states have internal predecessors, (723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:32:15,204 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:32:15,205 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:32:15,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 12:32:15,205 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-20 12:32:15,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:32:15,206 INFO L85 PathProgramCache]: Analyzing trace with hash -985100920, now seen corresponding path program 1 times [2022-11-20 12:32:15,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:32:15,206 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745054275] [2022-11-20 12:32:15,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:32:15,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:32:15,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:32:15,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:32:15,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:32:15,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745054275] [2022-11-20 12:32:15,352 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745054275] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:32:15,352 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:32:15,352 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:32:15,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555046230] [2022-11-20 12:32:15,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:32:15,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:32:15,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:32:15,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:32:15,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:32:15,355 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 162 [2022-11-20 12:32:15,356 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 162 transitions, 511 flow. Second operand has 6 states, 6 states have (on average 120.66666666666667) internal successors, (724), 6 states have internal predecessors, (724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:32:15,356 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:32:15,356 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 162 [2022-11-20 12:32:15,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:32:15,851 INFO L130 PetriNetUnfolder]: 321/1611 cut-off events. [2022-11-20 12:32:15,852 INFO L131 PetriNetUnfolder]: For 964/999 co-relation queries the response was YES. [2022-11-20 12:32:15,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2910 conditions, 1611 events. 321/1611 cut-off events. For 964/999 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 12861 event pairs, 77 based on Foata normal form. 42/1491 useless extension candidates. Maximal degree in co-relation 2149. Up to 272 conditions per place. [2022-11-20 12:32:15,868 INFO L137 encePairwiseOnDemand]: 151/162 looper letters, 65 selfloop transitions, 19 changer transitions 0/205 dead transitions. [2022-11-20 12:32:15,868 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 205 transitions, 846 flow [2022-11-20 12:32:15,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 12:32:15,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-20 12:32:15,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1154 transitions. [2022-11-20 12:32:15,872 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7914951989026063 [2022-11-20 12:32:15,872 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1154 transitions. [2022-11-20 12:32:15,872 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1154 transitions. [2022-11-20 12:32:15,873 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:32:15,873 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1154 transitions. [2022-11-20 12:32:15,876 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 128.22222222222223) internal successors, (1154), 9 states have internal predecessors, (1154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:32:15,879 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 162.0) internal successors, (1620), 10 states have internal predecessors, (1620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:32:15,880 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 162.0) internal successors, (1620), 10 states have internal predecessors, (1620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:32:15,880 INFO L175 Difference]: Start difference. First operand has 172 places, 162 transitions, 511 flow. Second operand 9 states and 1154 transitions. [2022-11-20 12:32:15,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 205 transitions, 846 flow [2022-11-20 12:32:15,888 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 205 transitions, 805 flow, removed 11 selfloop flow, removed 4 redundant places. [2022-11-20 12:32:15,891 INFO L231 Difference]: Finished difference. Result has 178 places, 166 transitions, 558 flow [2022-11-20 12:32:15,892 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=476, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=558, PETRI_PLACES=178, PETRI_TRANSITIONS=166} [2022-11-20 12:32:15,895 INFO L288 CegarLoopForPetriNet]: 146 programPoint places, 32 predicate places. [2022-11-20 12:32:15,895 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 166 transitions, 558 flow [2022-11-20 12:32:15,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 120.66666666666667) internal successors, (724), 6 states have internal predecessors, (724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:32:15,897 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:32:15,897 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:32:15,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-20 12:32:15,898 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-20 12:32:15,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:32:15,898 INFO L85 PathProgramCache]: Analyzing trace with hash 1027740495, now seen corresponding path program 1 times [2022-11-20 12:32:15,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:32:15,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069563480] [2022-11-20 12:32:15,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:32:15,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:32:15,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:32:16,000 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 12:32:16,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:32:16,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069563480] [2022-11-20 12:32:16,001 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069563480] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:32:16,001 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:32:16,001 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:32:16,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969141209] [2022-11-20 12:32:16,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:32:16,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:32:16,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:32:16,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:32:16,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:32:16,004 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 162 [2022-11-20 12:32:16,005 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 166 transitions, 558 flow. Second operand has 4 states, 4 states have (on average 125.25) internal successors, (501), 4 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:32:16,006 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:32:16,006 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 162 [2022-11-20 12:32:16,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:32:16,457 INFO L130 PetriNetUnfolder]: 270/1942 cut-off events. [2022-11-20 12:32:16,457 INFO L131 PetriNetUnfolder]: For 1155/1202 co-relation queries the response was YES. [2022-11-20 12:32:16,468 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3318 conditions, 1942 events. 270/1942 cut-off events. For 1155/1202 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 16720 event pairs, 127 based on Foata normal form. 24/1761 useless extension candidates. Maximal degree in co-relation 2554. Up to 362 conditions per place. [2022-11-20 12:32:16,478 INFO L137 encePairwiseOnDemand]: 155/162 looper letters, 55 selfloop transitions, 7 changer transitions 0/192 dead transitions. [2022-11-20 12:32:16,478 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 192 transitions, 820 flow [2022-11-20 12:32:16,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:32:16,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 12:32:16,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 664 transitions. [2022-11-20 12:32:16,481 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8197530864197531 [2022-11-20 12:32:16,481 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 664 transitions. [2022-11-20 12:32:16,481 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 664 transitions. [2022-11-20 12:32:16,482 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:32:16,482 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 664 transitions. [2022-11-20 12:32:16,483 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 132.8) internal successors, (664), 5 states have internal predecessors, (664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:32:16,486 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 162.0) internal successors, (972), 6 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:32:16,486 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 162.0) internal successors, (972), 6 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:32:16,487 INFO L175 Difference]: Start difference. First operand has 178 places, 166 transitions, 558 flow. Second operand 5 states and 664 transitions. [2022-11-20 12:32:16,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 192 transitions, 820 flow [2022-11-20 12:32:16,493 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 192 transitions, 792 flow, removed 2 selfloop flow, removed 4 redundant places. [2022-11-20 12:32:16,497 INFO L231 Difference]: Finished difference. Result has 181 places, 169 transitions, 588 flow [2022-11-20 12:32:16,497 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=540, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=588, PETRI_PLACES=181, PETRI_TRANSITIONS=169} [2022-11-20 12:32:16,498 INFO L288 CegarLoopForPetriNet]: 146 programPoint places, 35 predicate places. [2022-11-20 12:32:16,499 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 169 transitions, 588 flow [2022-11-20 12:32:16,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 125.25) internal successors, (501), 4 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:32:16,499 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:32:16,499 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:32:16,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-20 12:32:16,500 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-20 12:32:16,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:32:16,500 INFO L85 PathProgramCache]: Analyzing trace with hash 2070742754, now seen corresponding path program 1 times [2022-11-20 12:32:16,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:32:16,501 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803001102] [2022-11-20 12:32:16,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:32:16,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:32:16,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:32:16,519 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 12:32:16,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:32:16,537 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 12:32:16,537 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-20 12:32:16,538 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2022-11-20 12:32:16,538 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2022-11-20 12:32:16,538 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2022-11-20 12:32:16,538 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2022-11-20 12:32:16,539 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2022-11-20 12:32:16,539 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2022-11-20 12:32:16,539 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2022-11-20 12:32:16,539 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2022-11-20 12:32:16,540 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 17 remaining) [2022-11-20 12:32:16,540 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 17 remaining) [2022-11-20 12:32:16,540 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 17 remaining) [2022-11-20 12:32:16,540 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2022-11-20 12:32:16,540 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2022-11-20 12:32:16,541 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2022-11-20 12:32:16,541 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2022-11-20 12:32:16,541 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2022-11-20 12:32:16,541 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2022-11-20 12:32:16,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-20 12:32:16,542 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:32:16,542 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-20 12:32:16,543 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-20 12:32:16,578 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-20 12:32:16,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 179 places, 200 transitions, 430 flow [2022-11-20 12:32:16,638 INFO L130 PetriNetUnfolder]: 58/432 cut-off events. [2022-11-20 12:32:16,639 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-11-20 12:32:16,642 INFO L83 FinitePrefix]: Finished finitePrefix Result has 460 conditions, 432 events. 58/432 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1482 event pairs, 1 based on Foata normal form. 0/338 useless extension candidates. Maximal degree in co-relation 285. Up to 16 conditions per place. [2022-11-20 12:32:16,642 INFO L82 GeneralOperation]: Start removeDead. Operand has 179 places, 200 transitions, 430 flow [2022-11-20 12:32:16,648 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 179 places, 200 transitions, 430 flow [2022-11-20 12:32:16,650 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 12:32:16,650 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;@6ca6fe89, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 12:32:16,650 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2022-11-20 12:32:16,656 INFO L130 PetriNetUnfolder]: 4/68 cut-off events. [2022-11-20 12:32:16,656 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 12:32:16,657 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:32:16,657 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:32:16,657 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-20 12:32:16,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:32:16,658 INFO L85 PathProgramCache]: Analyzing trace with hash 511850946, now seen corresponding path program 1 times [2022-11-20 12:32:16,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:32:16,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291789219] [2022-11-20 12:32:16,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:32:16,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:32:16,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:32:16,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:32:16,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:32:16,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291789219] [2022-11-20 12:32:16,726 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291789219] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:32:16,726 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:32:16,726 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:32:16,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858621185] [2022-11-20 12:32:16,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:32:16,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:32:16,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:32:16,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:32:16,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:32:16,731 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 200 [2022-11-20 12:32:16,732 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 200 transitions, 430 flow. Second operand has 4 states, 4 states have (on average 158.75) internal successors, (635), 4 states have internal predecessors, (635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:32:16,732 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:32:16,732 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 200 [2022-11-20 12:32:16,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:32:16,857 INFO L130 PetriNetUnfolder]: 10/361 cut-off events. [2022-11-20 12:32:16,857 INFO L131 PetriNetUnfolder]: For 43/99 co-relation queries the response was YES. [2022-11-20 12:32:16,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 437 conditions, 361 events. 10/361 cut-off events. For 43/99 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1149 event pairs, 1 based on Foata normal form. 308/622 useless extension candidates. Maximal degree in co-relation 269. Up to 40 conditions per place. [2022-11-20 12:32:16,861 INFO L137 encePairwiseOnDemand]: 169/200 looper letters, 21 selfloop transitions, 4 changer transitions 0/182 dead transitions. [2022-11-20 12:32:16,861 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 182 transitions, 444 flow [2022-11-20 12:32:16,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:32:16,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 12:32:16,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 856 transitions. [2022-11-20 12:32:16,864 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.856 [2022-11-20 12:32:16,864 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 856 transitions. [2022-11-20 12:32:16,864 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 856 transitions. [2022-11-20 12:32:16,865 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:32:16,865 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 856 transitions. [2022-11-20 12:32:16,867 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 171.2) internal successors, (856), 5 states have internal predecessors, (856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:32:16,869 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 200.0) internal successors, (1200), 6 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:32:16,870 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 200.0) internal successors, (1200), 6 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:32:16,870 INFO L175 Difference]: Start difference. First operand has 179 places, 200 transitions, 430 flow. Second operand 5 states and 856 transitions. [2022-11-20 12:32:16,870 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 182 transitions, 444 flow [2022-11-20 12:32:16,872 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 182 transitions, 444 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 12:32:16,874 INFO L231 Difference]: Finished difference. Result has 185 places, 178 transitions, 412 flow [2022-11-20 12:32:16,875 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=200, PETRI_DIFFERENCE_MINUEND_FLOW=380, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=412, PETRI_PLACES=185, PETRI_TRANSITIONS=178} [2022-11-20 12:32:16,876 INFO L288 CegarLoopForPetriNet]: 179 programPoint places, 6 predicate places. [2022-11-20 12:32:16,877 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 178 transitions, 412 flow [2022-11-20 12:32:16,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 158.75) internal successors, (635), 4 states have internal predecessors, (635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:32:16,877 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:32:16,877 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:32:16,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-20 12:32:16,878 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-20 12:32:16,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:32:16,878 INFO L85 PathProgramCache]: Analyzing trace with hash -1125952652, now seen corresponding path program 1 times [2022-11-20 12:32:16,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:32:16,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955402325] [2022-11-20 12:32:16,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:32:16,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:32:16,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:32:16,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:32:16,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:32:16,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955402325] [2022-11-20 12:32:16,950 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955402325] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:32:16,950 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:32:16,951 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:32:16,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259460741] [2022-11-20 12:32:16,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:32:16,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:32:16,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:32:16,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:32:16,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:32:16,954 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 200 [2022-11-20 12:32:16,955 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 178 transitions, 412 flow. Second operand has 4 states, 4 states have (on average 151.0) internal successors, (604), 4 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:32:16,955 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:32:16,955 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 200 [2022-11-20 12:32:16,955 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:32:18,549 INFO L130 PetriNetUnfolder]: 1861/7910 cut-off events. [2022-11-20 12:32:18,550 INFO L131 PetriNetUnfolder]: For 1087/1087 co-relation queries the response was YES. [2022-11-20 12:32:18,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11269 conditions, 7910 events. 1861/7910 cut-off events. For 1087/1087 co-relation queries the response was YES. Maximal size of possible extension queue 320. Compared 86948 event pairs, 654 based on Foata normal form. 0/6973 useless extension candidates. Maximal degree in co-relation 11208. Up to 1995 conditions per place. [2022-11-20 12:32:18,644 INFO L137 encePairwiseOnDemand]: 192/200 looper letters, 52 selfloop transitions, 8 changer transitions 0/213 dead transitions. [2022-11-20 12:32:18,644 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 213 transitions, 644 flow [2022-11-20 12:32:18,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:32:18,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 12:32:18,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 814 transitions. [2022-11-20 12:32:18,647 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.814 [2022-11-20 12:32:18,647 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 814 transitions. [2022-11-20 12:32:18,648 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 814 transitions. [2022-11-20 12:32:18,648 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:32:18,648 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 814 transitions. [2022-11-20 12:32:18,650 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 162.8) internal successors, (814), 5 states have internal predecessors, (814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:32:18,653 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 200.0) internal successors, (1200), 6 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:32:18,653 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 200.0) internal successors, (1200), 6 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:32:18,654 INFO L175 Difference]: Start difference. First operand has 185 places, 178 transitions, 412 flow. Second operand 5 states and 814 transitions. [2022-11-20 12:32:18,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 213 transitions, 644 flow [2022-11-20 12:32:18,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 213 transitions, 642 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 12:32:18,659 INFO L231 Difference]: Finished difference. Result has 191 places, 185 transitions, 474 flow [2022-11-20 12:32:18,660 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=200, PETRI_DIFFERENCE_MINUEND_FLOW=410, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=474, PETRI_PLACES=191, PETRI_TRANSITIONS=185} [2022-11-20 12:32:18,660 INFO L288 CegarLoopForPetriNet]: 179 programPoint places, 12 predicate places. [2022-11-20 12:32:18,661 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 185 transitions, 474 flow [2022-11-20 12:32:18,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 151.0) internal successors, (604), 4 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:32:18,661 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:32:18,662 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:32:18,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-20 12:32:18,662 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-20 12:32:18,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:32:18,663 INFO L85 PathProgramCache]: Analyzing trace with hash 863787621, now seen corresponding path program 1 times [2022-11-20 12:32:18,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:32:18,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792293937] [2022-11-20 12:32:18,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:32:18,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:32:18,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:32:18,774 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 12:32:18,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:32:18,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792293937] [2022-11-20 12:32:18,774 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792293937] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:32:18,775 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:32:18,775 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:32:18,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752177068] [2022-11-20 12:32:18,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:32:18,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:32:18,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:32:18,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:32:18,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:32:18,778 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 200 [2022-11-20 12:32:18,779 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 185 transitions, 474 flow. Second operand has 4 states, 4 states have (on average 160.75) internal successors, (643), 4 states have internal predecessors, (643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:32:18,779 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:32:18,779 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 200 [2022-11-20 12:32:18,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:32:19,032 INFO L130 PetriNetUnfolder]: 40/864 cut-off events. [2022-11-20 12:32:19,032 INFO L131 PetriNetUnfolder]: For 172/382 co-relation queries the response was YES. [2022-11-20 12:32:19,040 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1097 conditions, 864 events. 40/864 cut-off events. For 172/382 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 5228 event pairs, 7 based on Foata normal form. 41/791 useless extension candidates. Maximal degree in co-relation 777. Up to 52 conditions per place. [2022-11-20 12:32:19,046 INFO L137 encePairwiseOnDemand]: 194/200 looper letters, 13 selfloop transitions, 8 changer transitions 0/185 dead transitions. [2022-11-20 12:32:19,046 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 185 transitions, 514 flow [2022-11-20 12:32:19,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:32:19,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 12:32:19,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 804 transitions. [2022-11-20 12:32:19,049 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.804 [2022-11-20 12:32:19,049 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 804 transitions. [2022-11-20 12:32:19,050 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 804 transitions. [2022-11-20 12:32:19,050 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:32:19,050 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 804 transitions. [2022-11-20 12:32:19,053 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 160.8) internal successors, (804), 5 states have internal predecessors, (804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:32:19,055 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 200.0) internal successors, (1200), 6 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:32:19,056 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 200.0) internal successors, (1200), 6 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:32:19,056 INFO L175 Difference]: Start difference. First operand has 191 places, 185 transitions, 474 flow. Second operand 5 states and 804 transitions. [2022-11-20 12:32:19,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 185 transitions, 514 flow [2022-11-20 12:32:19,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 185 transitions, 510 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 12:32:19,062 INFO L231 Difference]: Finished difference. Result has 194 places, 185 transitions, 490 flow [2022-11-20 12:32:19,062 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=200, PETRI_DIFFERENCE_MINUEND_FLOW=466, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=490, PETRI_PLACES=194, PETRI_TRANSITIONS=185} [2022-11-20 12:32:19,063 INFO L288 CegarLoopForPetriNet]: 179 programPoint places, 15 predicate places. [2022-11-20 12:32:19,064 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 185 transitions, 490 flow [2022-11-20 12:32:19,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 160.75) internal successors, (643), 4 states have internal predecessors, (643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:32:19,064 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:32:19,065 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:32:19,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-20 12:32:19,065 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-20 12:32:19,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:32:19,066 INFO L85 PathProgramCache]: Analyzing trace with hash 1007613107, now seen corresponding path program 1 times [2022-11-20 12:32:19,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:32:19,066 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192890203] [2022-11-20 12:32:19,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:32:19,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:32:19,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:32:19,176 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:32:19,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:32:19,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192890203] [2022-11-20 12:32:19,177 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192890203] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:32:19,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1525831789] [2022-11-20 12:32:19,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:32:19,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:32:19,178 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84e55832-1c7c-4cb5-a056-bf2ca7eaddb5/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:32:19,180 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84e55832-1c7c-4cb5-a056-bf2ca7eaddb5/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:32:19,207 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84e55832-1c7c-4cb5-a056-bf2ca7eaddb5/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 12:32:19,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:32:19,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 12:32:19,295 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:32:19,370 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:32:19,371 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:32:19,371 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1525831789] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:32:19,371 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:32:19,371 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-20 12:32:19,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224291692] [2022-11-20 12:32:19,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:32:19,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:32:19,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:32:19,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:32:19,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:32:19,377 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 200 [2022-11-20 12:32:19,379 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 185 transitions, 490 flow. Second operand has 6 states, 6 states have (on average 159.66666666666666) internal successors, (958), 6 states have internal predecessors, (958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:32:19,379 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:32:19,379 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 200 [2022-11-20 12:32:19,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:32:19,680 INFO L130 PetriNetUnfolder]: 40/862 cut-off events. [2022-11-20 12:32:19,680 INFO L131 PetriNetUnfolder]: For 186/379 co-relation queries the response was YES. [2022-11-20 12:32:19,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1106 conditions, 862 events. 40/862 cut-off events. For 186/379 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 5215 event pairs, 7 based on Foata normal form. 18/766 useless extension candidates. Maximal degree in co-relation 777. Up to 58 conditions per place. [2022-11-20 12:32:19,689 INFO L137 encePairwiseOnDemand]: 195/200 looper letters, 17 selfloop transitions, 6 changer transitions 0/187 dead transitions. [2022-11-20 12:32:19,689 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 187 transitions, 538 flow [2022-11-20 12:32:19,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 12:32:19,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 12:32:19,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1123 transitions. [2022-11-20 12:32:19,693 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8021428571428572 [2022-11-20 12:32:19,693 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1123 transitions. [2022-11-20 12:32:19,693 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1123 transitions. [2022-11-20 12:32:19,694 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:32:19,694 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1123 transitions. [2022-11-20 12:32:19,696 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 160.42857142857142) internal successors, (1123), 7 states have internal predecessors, (1123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:32:19,699 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 200.0) internal successors, (1600), 8 states have internal predecessors, (1600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:32:19,700 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 200.0) internal successors, (1600), 8 states have internal predecessors, (1600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:32:19,700 INFO L175 Difference]: Start difference. First operand has 194 places, 185 transitions, 490 flow. Second operand 7 states and 1123 transitions. [2022-11-20 12:32:19,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 187 transitions, 538 flow [2022-11-20 12:32:19,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 187 transitions, 526 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 12:32:19,705 INFO L231 Difference]: Finished difference. Result has 196 places, 184 transitions, 486 flow [2022-11-20 12:32:19,706 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=200, PETRI_DIFFERENCE_MINUEND_FLOW=474, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=486, PETRI_PLACES=196, PETRI_TRANSITIONS=184} [2022-11-20 12:32:19,706 INFO L288 CegarLoopForPetriNet]: 179 programPoint places, 17 predicate places. [2022-11-20 12:32:19,706 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 184 transitions, 486 flow [2022-11-20 12:32:19,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 159.66666666666666) internal successors, (958), 6 states have internal predecessors, (958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:32:19,707 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:32:19,707 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:32:19,723 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84e55832-1c7c-4cb5-a056-bf2ca7eaddb5/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 12:32:19,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84e55832-1c7c-4cb5-a056-bf2ca7eaddb5/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:32:19,918 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-20 12:32:19,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:32:19,918 INFO L85 PathProgramCache]: Analyzing trace with hash 1205128593, now seen corresponding path program 1 times [2022-11-20 12:32:19,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:32:19,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405340552] [2022-11-20 12:32:19,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:32:19,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:32:19,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:32:20,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:32:20,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:32:20,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405340552] [2022-11-20 12:32:20,024 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405340552] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:32:20,024 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:32:20,025 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:32:20,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372887242] [2022-11-20 12:32:20,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:32:20,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:32:20,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:32:20,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:32:20,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:32:20,029 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 200 [2022-11-20 12:32:20,030 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 184 transitions, 486 flow. Second operand has 6 states, 6 states have (on average 146.5) internal successors, (879), 6 states have internal predecessors, (879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:32:20,030 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:32:20,030 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 200 [2022-11-20 12:32:20,030 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:32:23,081 INFO L130 PetriNetUnfolder]: 4008/14681 cut-off events. [2022-11-20 12:32:23,081 INFO L131 PetriNetUnfolder]: For 4086/4086 co-relation queries the response was YES. [2022-11-20 12:32:23,144 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23608 conditions, 14681 events. 4008/14681 cut-off events. For 4086/4086 co-relation queries the response was YES. Maximal size of possible extension queue 627. Compared 175981 event pairs, 971 based on Foata normal form. 0/13074 useless extension candidates. Maximal degree in co-relation 20360. Up to 2727 conditions per place. [2022-11-20 12:32:23,225 INFO L137 encePairwiseOnDemand]: 187/200 looper letters, 100 selfloop transitions, 27 changer transitions 0/274 dead transitions. [2022-11-20 12:32:23,226 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 274 transitions, 1066 flow [2022-11-20 12:32:23,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 12:32:23,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-20 12:32:23,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1434 transitions. [2022-11-20 12:32:23,230 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7966666666666666 [2022-11-20 12:32:23,230 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1434 transitions. [2022-11-20 12:32:23,230 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1434 transitions. [2022-11-20 12:32:23,231 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:32:23,231 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1434 transitions. [2022-11-20 12:32:23,234 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 159.33333333333334) internal successors, (1434), 9 states have internal predecessors, (1434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:32:23,238 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 200.0) internal successors, (2000), 10 states have internal predecessors, (2000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:32:23,239 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 200.0) internal successors, (2000), 10 states have internal predecessors, (2000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:32:23,239 INFO L175 Difference]: Start difference. First operand has 196 places, 184 transitions, 486 flow. Second operand 9 states and 1434 transitions. [2022-11-20 12:32:23,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 274 transitions, 1066 flow [2022-11-20 12:32:23,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 274 transitions, 1055 flow, removed 1 selfloop flow, removed 5 redundant places. [2022-11-20 12:32:23,249 INFO L231 Difference]: Finished difference. Result has 205 places, 203 transitions, 679 flow [2022-11-20 12:32:23,250 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=200, PETRI_DIFFERENCE_MINUEND_FLOW=475, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=679, PETRI_PLACES=205, PETRI_TRANSITIONS=203} [2022-11-20 12:32:23,251 INFO L288 CegarLoopForPetriNet]: 179 programPoint places, 26 predicate places. [2022-11-20 12:32:23,251 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 203 transitions, 679 flow [2022-11-20 12:32:23,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 146.5) internal successors, (879), 6 states have internal predecessors, (879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:32:23,252 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:32:23,252 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:32:23,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-20 12:32:23,253 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-20 12:32:23,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:32:23,253 INFO L85 PathProgramCache]: Analyzing trace with hash -1295718484, now seen corresponding path program 1 times [2022-11-20 12:32:23,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:32:23,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809285033] [2022-11-20 12:32:23,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:32:23,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:32:23,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:32:23,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:32:23,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:32:23,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809285033] [2022-11-20 12:32:23,362 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809285033] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:32:23,362 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:32:23,362 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:32:23,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077476040] [2022-11-20 12:32:23,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:32:23,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:32:23,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:32:23,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:32:23,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:32:23,365 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 200 [2022-11-20 12:32:23,366 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 203 transitions, 679 flow. Second operand has 6 states, 6 states have (on average 146.66666666666666) internal successors, (880), 6 states have internal predecessors, (880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:32:23,366 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:32:23,366 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 200 [2022-11-20 12:32:23,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:32:26,172 INFO L130 PetriNetUnfolder]: 3817/13588 cut-off events. [2022-11-20 12:32:26,172 INFO L131 PetriNetUnfolder]: For 12657/12881 co-relation queries the response was YES. [2022-11-20 12:32:26,241 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27218 conditions, 13588 events. 3817/13588 cut-off events. For 12657/12881 co-relation queries the response was YES. Maximal size of possible extension queue 570. Compared 158874 event pairs, 1099 based on Foata normal form. 248/12467 useless extension candidates. Maximal degree in co-relation 20418. Up to 2976 conditions per place. [2022-11-20 12:32:26,428 INFO L137 encePairwiseOnDemand]: 187/200 looper letters, 107 selfloop transitions, 27 changer transitions 0/281 dead transitions. [2022-11-20 12:32:26,428 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 281 transitions, 1324 flow [2022-11-20 12:32:26,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 12:32:26,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-20 12:32:26,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1432 transitions. [2022-11-20 12:32:26,433 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7955555555555556 [2022-11-20 12:32:26,433 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1432 transitions. [2022-11-20 12:32:26,434 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1432 transitions. [2022-11-20 12:32:26,435 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:32:26,435 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1432 transitions. [2022-11-20 12:32:26,454 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 159.11111111111111) internal successors, (1432), 9 states have internal predecessors, (1432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:32:26,458 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 200.0) internal successors, (2000), 10 states have internal predecessors, (2000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:32:26,459 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 200.0) internal successors, (2000), 10 states have internal predecessors, (2000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:32:26,459 INFO L175 Difference]: Start difference. First operand has 205 places, 203 transitions, 679 flow. Second operand 9 states and 1432 transitions. [2022-11-20 12:32:26,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 281 transitions, 1324 flow [2022-11-20 12:32:26,503 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 281 transitions, 1257 flow, removed 20 selfloop flow, removed 4 redundant places. [2022-11-20 12:32:26,506 INFO L231 Difference]: Finished difference. Result has 211 places, 211 transitions, 760 flow [2022-11-20 12:32:26,507 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=200, PETRI_DIFFERENCE_MINUEND_FLOW=628, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=760, PETRI_PLACES=211, PETRI_TRANSITIONS=211} [2022-11-20 12:32:26,507 INFO L288 CegarLoopForPetriNet]: 179 programPoint places, 32 predicate places. [2022-11-20 12:32:26,507 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 211 transitions, 760 flow [2022-11-20 12:32:26,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 146.66666666666666) internal successors, (880), 6 states have internal predecessors, (880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:32:26,508 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:32:26,508 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:32:26,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-20 12:32:26,509 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-20 12:32:26,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:32:26,509 INFO L85 PathProgramCache]: Analyzing trace with hash -105134441, now seen corresponding path program 1 times [2022-11-20 12:32:26,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:32:26,510 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569986898] [2022-11-20 12:32:26,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:32:26,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:32:26,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:32:26,583 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 12:32:26,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:32:26,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569986898] [2022-11-20 12:32:26,584 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569986898] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:32:26,584 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:32:26,584 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:32:26,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915309872] [2022-11-20 12:32:26,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:32:26,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:32:26,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:32:26,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:32:26,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:32:26,586 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 200 [2022-11-20 12:32:26,587 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 211 transitions, 760 flow. Second operand has 4 states, 4 states have (on average 151.25) internal successors, (605), 4 states have internal predecessors, (605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:32:26,587 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:32:26,587 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 200 [2022-11-20 12:32:26,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:32:29,809 INFO L130 PetriNetUnfolder]: 4340/18329 cut-off events. [2022-11-20 12:32:29,809 INFO L131 PetriNetUnfolder]: For 16954/17324 co-relation queries the response was YES. [2022-11-20 12:32:29,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35989 conditions, 18329 events. 4340/18329 cut-off events. For 16954/17324 co-relation queries the response was YES. Maximal size of possible extension queue 807. Compared 236506 event pairs, 1561 based on Foata normal form. 212/16628 useless extension candidates. Maximal degree in co-relation 32398. Up to 4797 conditions per place. [2022-11-20 12:32:30,020 INFO L137 encePairwiseOnDemand]: 192/200 looper letters, 93 selfloop transitions, 11 changer transitions 0/260 dead transitions. [2022-11-20 12:32:30,021 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 260 transitions, 1276 flow [2022-11-20 12:32:30,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:32:30,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 12:32:30,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 812 transitions. [2022-11-20 12:32:30,026 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.812 [2022-11-20 12:32:30,027 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 812 transitions. [2022-11-20 12:32:30,028 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 812 transitions. [2022-11-20 12:32:30,028 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:32:30,028 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 812 transitions. [2022-11-20 12:32:30,030 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 162.4) internal successors, (812), 5 states have internal predecessors, (812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:32:30,032 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 200.0) internal successors, (1200), 6 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:32:30,033 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 200.0) internal successors, (1200), 6 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:32:30,033 INFO L175 Difference]: Start difference. First operand has 211 places, 211 transitions, 760 flow. Second operand 5 states and 812 transitions. [2022-11-20 12:32:30,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 260 transitions, 1276 flow [2022-11-20 12:32:30,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 260 transitions, 1234 flow, removed 2 selfloop flow, removed 4 redundant places. [2022-11-20 12:32:30,120 INFO L231 Difference]: Finished difference. Result has 214 places, 216 transitions, 810 flow [2022-11-20 12:32:30,121 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=200, PETRI_DIFFERENCE_MINUEND_FLOW=735, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=810, PETRI_PLACES=214, PETRI_TRANSITIONS=216} [2022-11-20 12:32:30,121 INFO L288 CegarLoopForPetriNet]: 179 programPoint places, 35 predicate places. [2022-11-20 12:32:30,122 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 216 transitions, 810 flow [2022-11-20 12:32:30,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 151.25) internal successors, (605), 4 states have internal predecessors, (605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:32:30,123 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:32:30,123 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:32:30,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-20 12:32:30,123 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-20 12:32:30,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:32:30,124 INFO L85 PathProgramCache]: Analyzing trace with hash 395203974, now seen corresponding path program 1 times [2022-11-20 12:32:30,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:32:30,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289689690] [2022-11-20 12:32:30,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:32:30,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:32:30,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:32:30,218 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 12:32:30,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:32:30,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289689690] [2022-11-20 12:32:30,219 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289689690] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:32:30,219 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:32:30,219 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:32:30,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617848319] [2022-11-20 12:32:30,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:32:30,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:32:30,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:32:30,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:32:30,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:32:30,223 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 200 [2022-11-20 12:32:30,223 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 216 transitions, 810 flow. Second operand has 6 states, 6 states have (on average 146.66666666666666) internal successors, (880), 6 states have internal predecessors, (880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:32:30,224 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:32:30,224 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 200 [2022-11-20 12:32:30,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:32:36,877 INFO L130 PetriNetUnfolder]: 9322/35901 cut-off events. [2022-11-20 12:32:36,877 INFO L131 PetriNetUnfolder]: For 32647/33945 co-relation queries the response was YES. [2022-11-20 12:32:37,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71736 conditions, 35901 events. 9322/35901 cut-off events. For 32647/33945 co-relation queries the response was YES. Maximal size of possible extension queue 1641. Compared 505660 event pairs, 3511 based on Foata normal form. 441/32657 useless extension candidates. Maximal degree in co-relation 49469. Up to 7067 conditions per place. [2022-11-20 12:32:37,259 INFO L137 encePairwiseOnDemand]: 187/200 looper letters, 149 selfloop transitions, 46 changer transitions 0/346 dead transitions. [2022-11-20 12:32:37,259 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 346 transitions, 1956 flow [2022-11-20 12:32:37,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 12:32:37,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-20 12:32:37,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1431 transitions. [2022-11-20 12:32:37,263 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.795 [2022-11-20 12:32:37,263 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1431 transitions. [2022-11-20 12:32:37,263 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1431 transitions. [2022-11-20 12:32:37,264 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:32:37,264 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1431 transitions. [2022-11-20 12:32:37,267 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 159.0) internal successors, (1431), 9 states have internal predecessors, (1431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:32:37,271 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 200.0) internal successors, (2000), 10 states have internal predecessors, (2000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:32:37,271 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 200.0) internal successors, (2000), 10 states have internal predecessors, (2000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:32:37,272 INFO L175 Difference]: Start difference. First operand has 214 places, 216 transitions, 810 flow. Second operand 9 states and 1431 transitions. [2022-11-20 12:32:37,272 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 346 transitions, 1956 flow [2022-11-20 12:32:37,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 346 transitions, 1950 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 12:32:37,489 INFO L231 Difference]: Finished difference. Result has 227 places, 251 transitions, 1294 flow [2022-11-20 12:32:37,489 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=200, PETRI_DIFFERENCE_MINUEND_FLOW=805, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1294, PETRI_PLACES=227, PETRI_TRANSITIONS=251} [2022-11-20 12:32:37,490 INFO L288 CegarLoopForPetriNet]: 179 programPoint places, 48 predicate places. [2022-11-20 12:32:37,490 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 251 transitions, 1294 flow [2022-11-20 12:32:37,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 146.66666666666666) internal successors, (880), 6 states have internal predecessors, (880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:32:37,491 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:32:37,491 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:32:37,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-20 12:32:37,491 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-20 12:32:37,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:32:37,492 INFO L85 PathProgramCache]: Analyzing trace with hash -340374907, now seen corresponding path program 1 times [2022-11-20 12:32:37,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:32:37,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081313403] [2022-11-20 12:32:37,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:32:37,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:32:37,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:32:37,727 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:32:37,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:32:37,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081313403] [2022-11-20 12:32:37,727 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081313403] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:32:37,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [691872577] [2022-11-20 12:32:37,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:32:37,728 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:32:37,728 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84e55832-1c7c-4cb5-a056-bf2ca7eaddb5/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:32:37,732 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84e55832-1c7c-4cb5-a056-bf2ca7eaddb5/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:32:37,739 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84e55832-1c7c-4cb5-a056-bf2ca7eaddb5/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 12:32:37,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:32:37,838 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 12:32:37,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:32:37,967 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:32:37,968 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:32:38,098 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:32:38,099 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [691872577] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:32:38,099 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:32:38,099 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 14 [2022-11-20 12:32:38,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539796303] [2022-11-20 12:32:38,100 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:32:38,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-20 12:32:38,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:32:38,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-20 12:32:38,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2022-11-20 12:32:38,103 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 200 [2022-11-20 12:32:38,105 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 251 transitions, 1294 flow. Second operand has 14 states, 14 states have (on average 115.92857142857143) internal successors, (1623), 14 states have internal predecessors, (1623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:32:38,105 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:32:38,105 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 200 [2022-11-20 12:32:38,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:32:46,863 INFO L130 PetriNetUnfolder]: 8824/42171 cut-off events. [2022-11-20 12:32:46,863 INFO L131 PetriNetUnfolder]: For 46820/47698 co-relation queries the response was YES. [2022-11-20 12:32:47,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78962 conditions, 42171 events. 8824/42171 cut-off events. For 46820/47698 co-relation queries the response was YES. Maximal size of possible extension queue 1263. Compared 607688 event pairs, 1645 based on Foata normal form. 2454/40631 useless extension candidates. Maximal degree in co-relation 64347. Up to 6345 conditions per place. [2022-11-20 12:32:47,189 INFO L137 encePairwiseOnDemand]: 175/200 looper letters, 489 selfloop transitions, 232 changer transitions 0/839 dead transitions. [2022-11-20 12:32:47,189 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 839 transitions, 5583 flow [2022-11-20 12:32:47,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-11-20 12:32:47,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2022-11-20 12:32:47,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 5664 transitions. [2022-11-20 12:32:47,217 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6293333333333333 [2022-11-20 12:32:47,218 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 5664 transitions. [2022-11-20 12:32:47,219 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 5664 transitions. [2022-11-20 12:32:47,225 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:32:47,226 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 5664 transitions. [2022-11-20 12:32:47,240 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 125.86666666666666) internal successors, (5664), 45 states have internal predecessors, (5664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:32:47,256 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 200.0) internal successors, (9200), 46 states have internal predecessors, (9200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:32:47,260 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 200.0) internal successors, (9200), 46 states have internal predecessors, (9200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:32:47,260 INFO L175 Difference]: Start difference. First operand has 227 places, 251 transitions, 1294 flow. Second operand 45 states and 5664 transitions. [2022-11-20 12:32:47,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 839 transitions, 5583 flow [2022-11-20 12:32:47,617 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 839 transitions, 5516 flow, removed 17 selfloop flow, removed 3 redundant places. [2022-11-20 12:32:47,628 INFO L231 Difference]: Finished difference. Result has 287 places, 440 transitions, 3405 flow [2022-11-20 12:32:47,630 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=200, PETRI_DIFFERENCE_MINUEND_FLOW=1250, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=3405, PETRI_PLACES=287, PETRI_TRANSITIONS=440} [2022-11-20 12:32:47,632 INFO L288 CegarLoopForPetriNet]: 179 programPoint places, 108 predicate places. [2022-11-20 12:32:47,632 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 440 transitions, 3405 flow [2022-11-20 12:32:47,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 115.92857142857143) internal successors, (1623), 14 states have internal predecessors, (1623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:32:47,633 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:32:47,633 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:32:47,644 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84e55832-1c7c-4cb5-a056-bf2ca7eaddb5/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 12:32:47,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84e55832-1c7c-4cb5-a056-bf2ca7eaddb5/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:32:47,840 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-20 12:32:47,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:32:47,840 INFO L85 PathProgramCache]: Analyzing trace with hash -633577969, now seen corresponding path program 1 times [2022-11-20 12:32:47,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:32:47,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808440348] [2022-11-20 12:32:47,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:32:47,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:32:47,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:32:47,966 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 12:32:47,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:32:47,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808440348] [2022-11-20 12:32:47,967 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808440348] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:32:47,967 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:32:47,967 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:32:47,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8953591] [2022-11-20 12:32:47,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:32:47,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:32:47,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:32:47,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:32:47,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:32:47,970 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 200 [2022-11-20 12:32:47,972 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 440 transitions, 3405 flow. Second operand has 6 states, 6 states have (on average 146.83333333333334) internal successors, (881), 6 states have internal predecessors, (881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:32:47,972 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:32:47,972 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 200 [2022-11-20 12:32:47,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:32:53,296 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([782] t_funEXIT-->L711-5: Formula: (= v_t_funThread2of3ForFork0_thidvar0_4 (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem14#1_13| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ .cse0 (- 4294967296))))) InVars {t_funThread2of3ForFork0_thidvar0=v_t_funThread2of3ForFork0_thidvar0_4, ULTIMATE.start_main_#t~mem14#1=|v_ULTIMATE.start_main_#t~mem14#1_13|} OutVars{t_funThread2of3ForFork0_thidvar0=v_t_funThread2of3ForFork0_thidvar0_4, ULTIMATE.start_main_#t~mem14#1=|v_ULTIMATE.start_main_#t~mem14#1_13|} AuxVars[] AssignedVars[][317], [Black: 381#(<= |t_funThread1of3ForFork0_#t~post7| 1), Black: 385#(and (= |t_funThread1of3ForFork0_#t~post5| 0) (<= ~global~0 1)), Black: 380#(<= ~global~0 1), Black: 379#(= |t_funThread1of3ForFork0_#t~post5| 0), Black: 904#(and (<= |~#__global_lock~0.base| 3) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (not (= |~#mutex~0.base| |~#__global_lock~0.base|)) (< ~global~0 2147483647)), Black: 850#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (< ~global~0 2147483646) (not (= |~#mutex~0.base| |~#__global_lock~0.base|))), Black: 878#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (not (= |~#mutex~0.base| |~#__global_lock~0.base|)) (<= ~global~0 1) (<= |t_funThread2of3ForFork0_#t~post5| 1)), 420#true, Black: 888#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (not (= |~#mutex~0.base| |~#__global_lock~0.base|)) (< ~global~0 2147483647)), Black: 892#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (not (= |~#mutex~0.base| |~#__global_lock~0.base|)) (< ~global~0 2147483647)), Black: 406#(and (<= 1 ~global~0) (<= 1 |t_funThread1of3ForFork0_#t~post7|)), Black: 876#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (not (= |~#mutex~0.base| |~#__global_lock~0.base|)) (<= |t_funThread1of3ForFork0_#t~post5| 0) (<= ~global~0 1) (<= |t_funThread2of3ForFork0_#t~post5| 1)), Black: 399#(<= 1 ~global~0), Black: 894#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (not (= |~#mutex~0.base| |~#__global_lock~0.base|))), Black: 842#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (not (= |~#mutex~0.base| |~#__global_lock~0.base|)) (<= ~global~0 1)), Black: 882#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (< ~global~0 2147483646) (not (= |~#mutex~0.base| |~#__global_lock~0.base|))), Black: 840#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (not (= |~#mutex~0.base| |~#__global_lock~0.base|)) (<= |t_funThread1of3ForFork0_#t~post5| 0) (<= ~global~0 1)), Black: 848#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (< ~global~0 2147483646) (not (= |~#mutex~0.base| |~#__global_lock~0.base|)) (<= |t_funThread2of3ForFork0_#t~post5| 1)), Black: 902#(and (<= |~#__global_lock~0.base| 3) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (not (= |~#mutex~0.base| |~#__global_lock~0.base|))), Black: 846#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (not (= |~#mutex~0.base| |~#__global_lock~0.base|))), Black: 412#(= ~global~0 0), Black: 413#(= |t_funThread2of3ForFork0_#t~post5| 0), Black: 898#(and (<= |~#__global_lock~0.base| 3) (not (= |~#mutex~0.base| |~#__global_lock~0.base|)) (<= |t_funThread2of3ForFork0_#t~post5| 1)), Black: 415#(and (= ~global~0 0) (= |t_funThread2of3ForFork0_#t~post5| 0)), Black: 874#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (< ~global~0 2147483646) (not (= |~#mutex~0.base| |~#__global_lock~0.base|)) (<= |t_funThread2of3ForFork0_#t~post5| 1)), Black: 868#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (not (= |~#mutex~0.base| |~#__global_lock~0.base|)) (<= |t_funThread2of3ForFork0_#t~post5| 1)), Black: 886#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (not (= |~#mutex~0.base| |~#__global_lock~0.base|)) (< ~global~0 2147483647) (<= |t_funThread2of3ForFork0_#t~post5| 1)), Black: 870#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (not (= |~#mutex~0.base| |~#__global_lock~0.base|)) (<= |t_funThread1of3ForFork0_#t~post5| 0)), 387#(and (<= |t_funThread1of3ForFork0_#t~post7| 1) (<= ~global~0 1)), 935#true, 215#(<= 1 |ULTIMATE.start_main_~i~0#1|), t_funThread1of3ForFork0InUse, t_funThread2of3ForFork0NotInUse, Black: 424#(<= ~global~0 1), t_funThread3of3ForFork0NotInUse, Black: 425#(<= |t_funThread2of3ForFork0_#t~post7| 1), 400#(<= 1 |t_funThread1of3ForFork0_#t~post7|), Black: 431#(and (<= |t_funThread2of3ForFork0_#t~post7| 1) (<= ~global~0 1)), Black: 423#(= |t_funThread2of3ForFork0_#t~post5| 0), Black: 429#(and (<= ~global~0 1) (= |t_funThread2of3ForFork0_#t~post5| 0)), Black: 187#(and (= |ULTIMATE.start_main_~i~0#1| 0) (= |ULTIMATE.start_main_#t~post8#1| 0)), Black: 184#(= |ULTIMATE.start_main_~i~0#1| 0), Black: 194#(= ~global~0 0), 88#L701-16true, Black: 195#(= |t_funThread1of3ForFork0_#t~post5| 0), Black: 197#(and (= |t_funThread1of3ForFork0_#t~post5| 0) (= ~global~0 0)), 852#(and (<= |~#__global_lock~0.base| 3) (not (= |~#mutex~0.base| |~#__global_lock~0.base|))), 202#true, 8#L711-5true]) [2022-11-20 12:32:53,297 INFO L383 tUnfolder$Statistics]: this new event has 164 ancestors and is cut-off event [2022-11-20 12:32:53,297 INFO L386 tUnfolder$Statistics]: existing Event has 164 ancestors and is cut-off event [2022-11-20 12:32:53,297 INFO L386 tUnfolder$Statistics]: existing Event has 117 ancestors and is cut-off event [2022-11-20 12:32:53,297 INFO L386 tUnfolder$Statistics]: existing Event has 117 ancestors and is cut-off event [2022-11-20 12:32:53,400 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([781] t_funEXIT-->L711-5: Formula: (= (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem14#1_11| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ (- 4294967296) .cse0))) v_t_funThread1of3ForFork0_thidvar0_4) InVars {ULTIMATE.start_main_#t~mem14#1=|v_ULTIMATE.start_main_#t~mem14#1_11|, t_funThread1of3ForFork0_thidvar0=v_t_funThread1of3ForFork0_thidvar0_4} OutVars{ULTIMATE.start_main_#t~mem14#1=|v_ULTIMATE.start_main_#t~mem14#1_11|, t_funThread1of3ForFork0_thidvar0=v_t_funThread1of3ForFork0_thidvar0_4} AuxVars[] AssignedVars[][401], [395#true, 161#L701-16true, Black: 381#(<= |t_funThread1of3ForFork0_#t~post7| 1), Black: 385#(and (= |t_funThread1of3ForFork0_#t~post5| 0) (<= ~global~0 1)), Black: 380#(<= ~global~0 1), Black: 387#(and (<= |t_funThread1of3ForFork0_#t~post7| 1) (<= ~global~0 1)), Black: 379#(= |t_funThread1of3ForFork0_#t~post5| 0), Black: 904#(and (<= |~#__global_lock~0.base| 3) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (not (= |~#mutex~0.base| |~#__global_lock~0.base|)) (< ~global~0 2147483647)), Black: 850#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (< ~global~0 2147483646) (not (= |~#mutex~0.base| |~#__global_lock~0.base|))), Black: 878#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (not (= |~#mutex~0.base| |~#__global_lock~0.base|)) (<= ~global~0 1) (<= |t_funThread2of3ForFork0_#t~post5| 1)), Black: 888#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (not (= |~#mutex~0.base| |~#__global_lock~0.base|)) (< ~global~0 2147483647)), Black: 406#(and (<= 1 ~global~0) (<= 1 |t_funThread1of3ForFork0_#t~post7|)), Black: 892#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (not (= |~#mutex~0.base| |~#__global_lock~0.base|)) (< ~global~0 2147483647)), Black: 876#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (not (= |~#mutex~0.base| |~#__global_lock~0.base|)) (<= |t_funThread1of3ForFork0_#t~post5| 0) (<= ~global~0 1) (<= |t_funThread2of3ForFork0_#t~post5| 1)), Black: 399#(<= 1 ~global~0), Black: 894#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (not (= |~#mutex~0.base| |~#__global_lock~0.base|))), Black: 842#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (not (= |~#mutex~0.base| |~#__global_lock~0.base|)) (<= ~global~0 1)), Black: 882#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (< ~global~0 2147483646) (not (= |~#mutex~0.base| |~#__global_lock~0.base|))), 940#(<= 1 |t_funThread2of3ForFork0_#t~post7|), Black: 840#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (not (= |~#mutex~0.base| |~#__global_lock~0.base|)) (<= |t_funThread1of3ForFork0_#t~post5| 0) (<= ~global~0 1)), Black: 848#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (< ~global~0 2147483646) (not (= |~#mutex~0.base| |~#__global_lock~0.base|)) (<= |t_funThread2of3ForFork0_#t~post5| 1)), Black: 902#(and (<= |~#__global_lock~0.base| 3) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (not (= |~#mutex~0.base| |~#__global_lock~0.base|))), Black: 846#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (not (= |~#mutex~0.base| |~#__global_lock~0.base|))), Black: 412#(= ~global~0 0), Black: 898#(and (<= |~#__global_lock~0.base| 3) (not (= |~#mutex~0.base| |~#__global_lock~0.base|)) (<= |t_funThread2of3ForFork0_#t~post5| 1)), Black: 413#(= |t_funThread2of3ForFork0_#t~post5| 0), Black: 874#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (< ~global~0 2147483646) (not (= |~#mutex~0.base| |~#__global_lock~0.base|)) (<= |t_funThread2of3ForFork0_#t~post5| 1)), Black: 415#(and (= ~global~0 0) (= |t_funThread2of3ForFork0_#t~post5| 0)), Black: 868#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (not (= |~#mutex~0.base| |~#__global_lock~0.base|)) (<= |t_funThread2of3ForFork0_#t~post5| 1)), Black: 886#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (not (= |~#mutex~0.base| |~#__global_lock~0.base|)) (< ~global~0 2147483647) (<= |t_funThread2of3ForFork0_#t~post5| 1)), Black: 870#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (not (= |~#mutex~0.base| |~#__global_lock~0.base|)) (<= |t_funThread1of3ForFork0_#t~post5| 0)), 215#(<= 1 |ULTIMATE.start_main_~i~0#1|), t_funThread1of3ForFork0NotInUse, Black: 424#(<= ~global~0 1), Black: 420#true, t_funThread2of3ForFork0InUse, t_funThread3of3ForFork0NotInUse, Black: 425#(<= |t_funThread2of3ForFork0_#t~post7| 1), Black: 423#(= |t_funThread2of3ForFork0_#t~post5| 0), Black: 429#(and (<= ~global~0 1) (= |t_funThread2of3ForFork0_#t~post5| 0)), 431#(and (<= |t_funThread2of3ForFork0_#t~post7| 1) (<= ~global~0 1)), Black: 187#(and (= |ULTIMATE.start_main_~i~0#1| 0) (= |ULTIMATE.start_main_#t~post8#1| 0)), Black: 184#(= |ULTIMATE.start_main_~i~0#1| 0), 376#true, Black: 194#(= ~global~0 0), Black: 195#(= |t_funThread1of3ForFork0_#t~post5| 0), Black: 197#(and (= |t_funThread1of3ForFork0_#t~post5| 0) (= ~global~0 0)), 852#(and (<= |~#__global_lock~0.base| 3) (not (= |~#mutex~0.base| |~#__global_lock~0.base|))), 202#true, 8#L711-5true]) [2022-11-20 12:32:53,401 INFO L383 tUnfolder$Statistics]: this new event has 164 ancestors and is cut-off event [2022-11-20 12:32:53,401 INFO L386 tUnfolder$Statistics]: existing Event has 117 ancestors and is cut-off event [2022-11-20 12:32:53,401 INFO L386 tUnfolder$Statistics]: existing Event has 117 ancestors and is cut-off event [2022-11-20 12:32:53,401 INFO L386 tUnfolder$Statistics]: existing Event has 117 ancestors and is cut-off event [2022-11-20 12:32:53,446 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([781] t_funEXIT-->L711-5: Formula: (= (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem14#1_11| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ (- 4294967296) .cse0))) v_t_funThread1of3ForFork0_thidvar0_4) InVars {ULTIMATE.start_main_#t~mem14#1=|v_ULTIMATE.start_main_#t~mem14#1_11|, t_funThread1of3ForFork0_thidvar0=v_t_funThread1of3ForFork0_thidvar0_4} OutVars{ULTIMATE.start_main_#t~mem14#1=|v_ULTIMATE.start_main_#t~mem14#1_11|, t_funThread1of3ForFork0_thidvar0=v_t_funThread1of3ForFork0_thidvar0_4} AuxVars[] AssignedVars[][216], [395#true, Black: 381#(<= |t_funThread1of3ForFork0_#t~post7| 1), Black: 385#(and (= |t_funThread1of3ForFork0_#t~post5| 0) (<= ~global~0 1)), Black: 380#(<= ~global~0 1), Black: 387#(and (<= |t_funThread1of3ForFork0_#t~post7| 1) (<= ~global~0 1)), Black: 379#(= |t_funThread1of3ForFork0_#t~post5| 0), Black: 904#(and (<= |~#__global_lock~0.base| 3) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (not (= |~#mutex~0.base| |~#__global_lock~0.base|)) (< ~global~0 2147483647)), Black: 850#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (< ~global~0 2147483646) (not (= |~#mutex~0.base| |~#__global_lock~0.base|))), Black: 878#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (not (= |~#mutex~0.base| |~#__global_lock~0.base|)) (<= ~global~0 1) (<= |t_funThread2of3ForFork0_#t~post5| 1)), Black: 888#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (not (= |~#mutex~0.base| |~#__global_lock~0.base|)) (< ~global~0 2147483647)), Black: 406#(and (<= 1 ~global~0) (<= 1 |t_funThread1of3ForFork0_#t~post7|)), Black: 892#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (not (= |~#mutex~0.base| |~#__global_lock~0.base|)) (< ~global~0 2147483647)), Black: 876#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (not (= |~#mutex~0.base| |~#__global_lock~0.base|)) (<= |t_funThread1of3ForFork0_#t~post5| 0) (<= ~global~0 1) (<= |t_funThread2of3ForFork0_#t~post5| 1)), Black: 399#(<= 1 ~global~0), Black: 894#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (not (= |~#mutex~0.base| |~#__global_lock~0.base|))), Black: 842#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (not (= |~#mutex~0.base| |~#__global_lock~0.base|)) (<= ~global~0 1)), Black: 882#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (< ~global~0 2147483646) (not (= |~#mutex~0.base| |~#__global_lock~0.base|))), Black: 840#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (not (= |~#mutex~0.base| |~#__global_lock~0.base|)) (<= |t_funThread1of3ForFork0_#t~post5| 0) (<= ~global~0 1)), Black: 848#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (< ~global~0 2147483646) (not (= |~#mutex~0.base| |~#__global_lock~0.base|)) (<= |t_funThread2of3ForFork0_#t~post5| 1)), Black: 902#(and (<= |~#__global_lock~0.base| 3) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (not (= |~#mutex~0.base| |~#__global_lock~0.base|))), Black: 846#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (not (= |~#mutex~0.base| |~#__global_lock~0.base|))), Black: 412#(= ~global~0 0), 424#(<= ~global~0 1), Black: 898#(and (<= |~#__global_lock~0.base| 3) (not (= |~#mutex~0.base| |~#__global_lock~0.base|)) (<= |t_funThread2of3ForFork0_#t~post5| 1)), Black: 413#(= |t_funThread2of3ForFork0_#t~post5| 0), Black: 874#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (< ~global~0 2147483646) (not (= |~#mutex~0.base| |~#__global_lock~0.base|)) (<= |t_funThread2of3ForFork0_#t~post5| 1)), Black: 415#(and (= ~global~0 0) (= |t_funThread2of3ForFork0_#t~post5| 0)), Black: 868#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (not (= |~#mutex~0.base| |~#__global_lock~0.base|)) (<= |t_funThread2of3ForFork0_#t~post5| 1)), Black: 886#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (not (= |~#mutex~0.base| |~#__global_lock~0.base|)) (< ~global~0 2147483647) (<= |t_funThread2of3ForFork0_#t~post5| 1)), Black: 870#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (not (= |~#mutex~0.base| |~#__global_lock~0.base|)) (<= |t_funThread1of3ForFork0_#t~post5| 0)), 935#true, 215#(<= 1 |ULTIMATE.start_main_~i~0#1|), t_funThread1of3ForFork0NotInUse, Black: 420#true, t_funThread2of3ForFork0InUse, t_funThread3of3ForFork0NotInUse, Black: 425#(<= |t_funThread2of3ForFork0_#t~post7| 1), Black: 431#(and (<= |t_funThread2of3ForFork0_#t~post7| 1) (<= ~global~0 1)), Black: 423#(= |t_funThread2of3ForFork0_#t~post5| 0), Black: 429#(and (<= ~global~0 1) (= |t_funThread2of3ForFork0_#t~post5| 0)), Black: 187#(and (= |ULTIMATE.start_main_~i~0#1| 0) (= |ULTIMATE.start_main_#t~post8#1| 0)), Black: 184#(= |ULTIMATE.start_main_~i~0#1| 0), 376#true, Black: 194#(= ~global~0 0), Black: 195#(= |t_funThread1of3ForFork0_#t~post5| 0), Black: 197#(and (= |t_funThread1of3ForFork0_#t~post5| 0) (= ~global~0 0)), 852#(and (<= |~#__global_lock~0.base| 3) (not (= |~#mutex~0.base| |~#__global_lock~0.base|))), 168#L701-17true, 202#true, 8#L711-5true]) [2022-11-20 12:32:53,447 INFO L383 tUnfolder$Statistics]: this new event has 165 ancestors and is cut-off event [2022-11-20 12:32:53,447 INFO L386 tUnfolder$Statistics]: existing Event has 118 ancestors and is cut-off event [2022-11-20 12:32:53,447 INFO L386 tUnfolder$Statistics]: existing Event has 118 ancestors and is cut-off event [2022-11-20 12:32:53,447 INFO L386 tUnfolder$Statistics]: existing Event has 118 ancestors and is cut-off event [2022-11-20 12:32:53,527 INFO L130 PetriNetUnfolder]: 3635/26629 cut-off events. [2022-11-20 12:32:53,527 INFO L131 PetriNetUnfolder]: For 59722/60907 co-relation queries the response was YES. [2022-11-20 12:32:53,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53689 conditions, 26629 events. 3635/26629 cut-off events. For 59722/60907 co-relation queries the response was YES. Maximal size of possible extension queue 800. Compared 388249 event pairs, 1522 based on Foata normal form. 416/23890 useless extension candidates. Maximal degree in co-relation 52726. Up to 4595 conditions per place. [2022-11-20 12:32:53,797 INFO L137 encePairwiseOnDemand]: 187/200 looper letters, 219 selfloop transitions, 63 changer transitions 0/514 dead transitions. [2022-11-20 12:32:53,797 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 514 transitions, 4562 flow [2022-11-20 12:32:53,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 12:32:53,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-20 12:32:53,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1425 transitions. [2022-11-20 12:32:53,802 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7916666666666666 [2022-11-20 12:32:53,802 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1425 transitions. [2022-11-20 12:32:53,802 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1425 transitions. [2022-11-20 12:32:53,803 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:32:53,803 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1425 transitions. [2022-11-20 12:32:53,806 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 158.33333333333334) internal successors, (1425), 9 states have internal predecessors, (1425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:32:53,811 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 200.0) internal successors, (2000), 10 states have internal predecessors, (2000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:32:53,812 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 200.0) internal successors, (2000), 10 states have internal predecessors, (2000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:32:53,812 INFO L175 Difference]: Start difference. First operand has 287 places, 440 transitions, 3405 flow. Second operand 9 states and 1425 transitions. [2022-11-20 12:32:53,812 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 514 transitions, 4562 flow [2022-11-20 12:32:54,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 514 transitions, 4110 flow, removed 178 selfloop flow, removed 9 redundant places. [2022-11-20 12:32:54,145 INFO L231 Difference]: Finished difference. Result has 287 places, 442 transitions, 3158 flow [2022-11-20 12:32:54,146 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=200, PETRI_DIFFERENCE_MINUEND_FLOW=2988, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=439, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=376, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3158, PETRI_PLACES=287, PETRI_TRANSITIONS=442} [2022-11-20 12:32:54,146 INFO L288 CegarLoopForPetriNet]: 179 programPoint places, 108 predicate places. [2022-11-20 12:32:54,146 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 442 transitions, 3158 flow [2022-11-20 12:32:54,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 146.83333333333334) internal successors, (881), 6 states have internal predecessors, (881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:32:54,147 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:32:54,147 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:32:54,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-20 12:32:54,148 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-20 12:32:54,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:32:54,148 INFO L85 PathProgramCache]: Analyzing trace with hash 1382548027, now seen corresponding path program 1 times [2022-11-20 12:32:54,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:32:54,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293500341] [2022-11-20 12:32:54,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:32:54,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:32:54,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:32:54,244 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-20 12:32:54,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:32:54,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293500341] [2022-11-20 12:32:54,245 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293500341] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:32:54,245 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:32:54,245 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:32:54,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644600981] [2022-11-20 12:32:54,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:32:54,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:32:54,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:32:54,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:32:54,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:32:54,248 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 200 [2022-11-20 12:32:54,249 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 442 transitions, 3158 flow. Second operand has 4 states, 4 states have (on average 151.5) internal successors, (606), 4 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:32:54,249 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:32:54,249 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 200 [2022-11-20 12:32:54,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:32:59,033 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([781] t_funEXIT-->L711-5: Formula: (= (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem14#1_11| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ (- 4294967296) .cse0))) v_t_funThread1of3ForFork0_thidvar0_4) InVars {ULTIMATE.start_main_#t~mem14#1=|v_ULTIMATE.start_main_#t~mem14#1_11|, t_funThread1of3ForFork0_thidvar0=v_t_funThread1of3ForFork0_thidvar0_4} OutVars{ULTIMATE.start_main_#t~mem14#1=|v_ULTIMATE.start_main_#t~mem14#1_11|, t_funThread1of3ForFork0_thidvar0=v_t_funThread1of3ForFork0_thidvar0_4} AuxVars[] AssignedVars[][206], [395#true, 161#L701-16true, Black: 381#(<= |t_funThread1of3ForFork0_#t~post7| 1), Black: 385#(and (= |t_funThread1of3ForFork0_#t~post5| 0) (<= ~global~0 1)), Black: 380#(<= ~global~0 1), Black: 387#(and (<= |t_funThread1of3ForFork0_#t~post7| 1) (<= ~global~0 1)), Black: 379#(= |t_funThread1of3ForFork0_#t~post5| 0), Black: 904#(and (<= |~#__global_lock~0.base| 3) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (not (= |~#mutex~0.base| |~#__global_lock~0.base|)) (< ~global~0 2147483647)), Black: 850#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (< ~global~0 2147483646) (not (= |~#mutex~0.base| |~#__global_lock~0.base|))), Black: 878#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (not (= |~#mutex~0.base| |~#__global_lock~0.base|)) (<= ~global~0 1) (<= |t_funThread2of3ForFork0_#t~post5| 1)), Black: 888#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (not (= |~#mutex~0.base| |~#__global_lock~0.base|)) (< ~global~0 2147483647)), Black: 892#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (not (= |~#mutex~0.base| |~#__global_lock~0.base|)) (< ~global~0 2147483647)), Black: 406#(and (<= 1 ~global~0) (<= 1 |t_funThread1of3ForFork0_#t~post7|)), Black: 876#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (not (= |~#mutex~0.base| |~#__global_lock~0.base|)) (<= |t_funThread1of3ForFork0_#t~post5| 0) (<= ~global~0 1) (<= |t_funThread2of3ForFork0_#t~post5| 1)), Black: 399#(<= 1 ~global~0), Black: 894#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (not (= |~#mutex~0.base| |~#__global_lock~0.base|))), Black: 842#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (not (= |~#mutex~0.base| |~#__global_lock~0.base|)) (<= ~global~0 1)), Black: 882#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (< ~global~0 2147483646) (not (= |~#mutex~0.base| |~#__global_lock~0.base|))), 940#(<= 1 |t_funThread2of3ForFork0_#t~post7|), Black: 840#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (not (= |~#mutex~0.base| |~#__global_lock~0.base|)) (<= |t_funThread1of3ForFork0_#t~post5| 0) (<= ~global~0 1)), Black: 848#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (< ~global~0 2147483646) (not (= |~#mutex~0.base| |~#__global_lock~0.base|)) (<= |t_funThread2of3ForFork0_#t~post5| 1)), Black: 902#(and (<= |~#__global_lock~0.base| 3) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (not (= |~#mutex~0.base| |~#__global_lock~0.base|))), Black: 846#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (not (= |~#mutex~0.base| |~#__global_lock~0.base|))), Black: 412#(= ~global~0 0), Black: 898#(and (<= |~#__global_lock~0.base| 3) (not (= |~#mutex~0.base| |~#__global_lock~0.base|)) (<= |t_funThread2of3ForFork0_#t~post5| 1)), Black: 413#(= |t_funThread2of3ForFork0_#t~post5| 0), Black: 874#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (< ~global~0 2147483646) (not (= |~#mutex~0.base| |~#__global_lock~0.base|)) (<= |t_funThread2of3ForFork0_#t~post5| 1)), Black: 415#(and (= ~global~0 0) (= |t_funThread2of3ForFork0_#t~post5| 0)), Black: 868#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (not (= |~#mutex~0.base| |~#__global_lock~0.base|)) (<= |t_funThread2of3ForFork0_#t~post5| 1)), Black: 886#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (not (= |~#mutex~0.base| |~#__global_lock~0.base|)) (< ~global~0 2147483647) (<= |t_funThread2of3ForFork0_#t~post5| 1)), Black: 870#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (not (= |~#mutex~0.base| |~#__global_lock~0.base|)) (<= |t_funThread1of3ForFork0_#t~post5| 0)), 215#(<= 1 |ULTIMATE.start_main_~i~0#1|), t_funThread1of3ForFork0NotInUse, Black: 424#(<= ~global~0 1), t_funThread2of3ForFork0InUse, t_funThread3of3ForFork0NotInUse, Black: 425#(<= |t_funThread2of3ForFork0_#t~post7| 1), Black: 946#(and (<= 1 ~global~0) (<= 1 |t_funThread2of3ForFork0_#t~post7|)), 949#true, Black: 423#(= |t_funThread2of3ForFork0_#t~post5| 0), Black: 429#(and (<= ~global~0 1) (= |t_funThread2of3ForFork0_#t~post5| 0)), 431#(and (<= |t_funThread2of3ForFork0_#t~post7| 1) (<= ~global~0 1)), Black: 187#(and (= |ULTIMATE.start_main_~i~0#1| 0) (= |ULTIMATE.start_main_#t~post8#1| 0)), Black: 184#(= |ULTIMATE.start_main_~i~0#1| 0), 376#true, Black: 194#(= ~global~0 0), Black: 195#(= |t_funThread1of3ForFork0_#t~post5| 0), Black: 197#(and (= |t_funThread1of3ForFork0_#t~post5| 0) (= ~global~0 0)), 852#(and (<= |~#__global_lock~0.base| 3) (not (= |~#mutex~0.base| |~#__global_lock~0.base|))), 202#true, 8#L711-5true]) [2022-11-20 12:32:59,033 INFO L383 tUnfolder$Statistics]: this new event has 164 ancestors and is cut-off event [2022-11-20 12:32:59,034 INFO L386 tUnfolder$Statistics]: existing Event has 117 ancestors and is cut-off event [2022-11-20 12:32:59,034 INFO L386 tUnfolder$Statistics]: existing Event has 117 ancestors and is cut-off event [2022-11-20 12:32:59,034 INFO L386 tUnfolder$Statistics]: existing Event has 117 ancestors and is cut-off event [2022-11-20 12:32:59,146 INFO L130 PetriNetUnfolder]: 2995/24018 cut-off events. [2022-11-20 12:32:59,146 INFO L131 PetriNetUnfolder]: For 49379/50490 co-relation queries the response was YES. [2022-11-20 12:32:59,293 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47295 conditions, 24018 events. 2995/24018 cut-off events. For 49379/50490 co-relation queries the response was YES. Maximal size of possible extension queue 827. Compared 350940 event pairs, 1358 based on Foata normal form. 394/21441 useless extension candidates. Maximal degree in co-relation 46307. Up to 4575 conditions per place. [2022-11-20 12:32:59,359 INFO L137 encePairwiseOnDemand]: 192/200 looper letters, 201 selfloop transitions, 15 changer transitions 0/488 dead transitions. [2022-11-20 12:32:59,360 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 488 transitions, 4058 flow [2022-11-20 12:32:59,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:32:59,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 12:32:59,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 810 transitions. [2022-11-20 12:32:59,362 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.81 [2022-11-20 12:32:59,362 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 810 transitions. [2022-11-20 12:32:59,362 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 810 transitions. [2022-11-20 12:32:59,362 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:32:59,363 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 810 transitions. [2022-11-20 12:32:59,364 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 162.0) internal successors, (810), 5 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:32:59,365 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 200.0) internal successors, (1200), 6 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:32:59,366 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 200.0) internal successors, (1200), 6 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:32:59,366 INFO L175 Difference]: Start difference. First operand has 287 places, 442 transitions, 3158 flow. Second operand 5 states and 810 transitions. [2022-11-20 12:32:59,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 488 transitions, 4058 flow [2022-11-20 12:32:59,577 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 488 transitions, 3970 flow, removed 7 selfloop flow, removed 4 redundant places. [2022-11-20 12:32:59,581 INFO L231 Difference]: Finished difference. Result has 290 places, 446 transitions, 3174 flow [2022-11-20 12:32:59,581 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=200, PETRI_DIFFERENCE_MINUEND_FLOW=3083, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=442, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=429, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=3174, PETRI_PLACES=290, PETRI_TRANSITIONS=446} [2022-11-20 12:32:59,582 INFO L288 CegarLoopForPetriNet]: 179 programPoint places, 111 predicate places. [2022-11-20 12:32:59,582 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 446 transitions, 3174 flow [2022-11-20 12:32:59,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 151.5) internal successors, (606), 4 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:32:59,582 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:32:59,583 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:32:59,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-20 12:32:59,583 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-20 12:32:59,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:32:59,583 INFO L85 PathProgramCache]: Analyzing trace with hash -1656253966, now seen corresponding path program 1 times [2022-11-20 12:32:59,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:32:59,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906680880] [2022-11-20 12:32:59,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:32:59,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:32:59,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:32:59,599 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 12:32:59,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:32:59,616 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 12:32:59,617 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-20 12:32:59,617 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 21 remaining) [2022-11-20 12:32:59,617 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 21 remaining) [2022-11-20 12:32:59,617 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 21 remaining) [2022-11-20 12:32:59,618 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 21 remaining) [2022-11-20 12:32:59,618 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 21 remaining) [2022-11-20 12:32:59,618 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 21 remaining) [2022-11-20 12:32:59,618 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 21 remaining) [2022-11-20 12:32:59,619 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 21 remaining) [2022-11-20 12:32:59,619 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 21 remaining) [2022-11-20 12:32:59,619 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 21 remaining) [2022-11-20 12:32:59,619 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 21 remaining) [2022-11-20 12:32:59,620 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 21 remaining) [2022-11-20 12:32:59,620 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 21 remaining) [2022-11-20 12:32:59,620 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 21 remaining) [2022-11-20 12:32:59,620 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 21 remaining) [2022-11-20 12:32:59,621 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 21 remaining) [2022-11-20 12:32:59,621 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 21 remaining) [2022-11-20 12:32:59,621 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 21 remaining) [2022-11-20 12:32:59,621 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 21 remaining) [2022-11-20 12:32:59,622 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 21 remaining) [2022-11-20 12:32:59,622 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 21 remaining) [2022-11-20 12:32:59,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-20 12:32:59,622 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:32:59,623 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-20 12:32:59,623 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-11-20 12:32:59,647 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-11-20 12:32:59,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 212 places, 238 transitions, 520 flow [2022-11-20 12:32:59,739 INFO L130 PetriNetUnfolder]: 91/671 cut-off events. [2022-11-20 12:32:59,739 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2022-11-20 12:32:59,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 726 conditions, 671 events. 91/671 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 2639 event pairs, 6 based on Foata normal form. 0/526 useless extension candidates. Maximal degree in co-relation 452. Up to 32 conditions per place. [2022-11-20 12:32:59,746 INFO L82 GeneralOperation]: Start removeDead. Operand has 212 places, 238 transitions, 520 flow [2022-11-20 12:32:59,753 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 212 places, 238 transitions, 520 flow [2022-11-20 12:32:59,754 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 12:32:59,754 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;@6ca6fe89, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 12:32:59,754 INFO L358 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2022-11-20 12:32:59,758 INFO L130 PetriNetUnfolder]: 4/67 cut-off events. [2022-11-20 12:32:59,759 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 12:32:59,759 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:32:59,759 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:32:59,759 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-20 12:32:59,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:32:59,760 INFO L85 PathProgramCache]: Analyzing trace with hash 2101407014, now seen corresponding path program 1 times [2022-11-20 12:32:59,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:32:59,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443212865] [2022-11-20 12:32:59,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:32:59,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:32:59,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:32:59,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:32:59,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:32:59,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443212865] [2022-11-20 12:32:59,798 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443212865] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:32:59,798 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:32:59,798 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:32:59,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121331569] [2022-11-20 12:32:59,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:32:59,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:32:59,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:32:59,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:32:59,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:32:59,801 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 238 [2022-11-20 12:32:59,802 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 238 transitions, 520 flow. Second operand has 4 states, 4 states have (on average 188.75) internal successors, (755), 4 states have internal predecessors, (755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:32:59,802 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:32:59,802 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 238 [2022-11-20 12:32:59,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:33:00,250 INFO L130 PetriNetUnfolder]: 24/580 cut-off events. [2022-11-20 12:33:00,250 INFO L131 PetriNetUnfolder]: For 143/273 co-relation queries the response was YES. [2022-11-20 12:33:00,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 714 conditions, 580 events. 24/580 cut-off events. For 143/273 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 2382 event pairs, 6 based on Foata normal form. 632/1132 useless extension candidates. Maximal degree in co-relation 441. Up to 71 conditions per place. [2022-11-20 12:33:00,257 INFO L137 encePairwiseOnDemand]: 201/238 looper letters, 23 selfloop transitions, 4 changer transitions 0/214 dead transitions. [2022-11-20 12:33:00,258 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 214 transitions, 526 flow [2022-11-20 12:33:00,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:33:00,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 12:33:00,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1014 transitions. [2022-11-20 12:33:00,260 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8521008403361344 [2022-11-20 12:33:00,261 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1014 transitions. [2022-11-20 12:33:00,261 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1014 transitions. [2022-11-20 12:33:00,262 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:33:00,262 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1014 transitions. [2022-11-20 12:33:00,264 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 202.8) internal successors, (1014), 5 states have internal predecessors, (1014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:33:00,266 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 238.0) internal successors, (1428), 6 states have internal predecessors, (1428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:33:00,267 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 238.0) internal successors, (1428), 6 states have internal predecessors, (1428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:33:00,267 INFO L175 Difference]: Start difference. First operand has 212 places, 238 transitions, 520 flow. Second operand 5 states and 1014 transitions. [2022-11-20 12:33:00,267 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 214 transitions, 526 flow [2022-11-20 12:33:00,269 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 214 transitions, 526 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 12:33:00,272 INFO L231 Difference]: Finished difference. Result has 218 places, 210 transitions, 490 flow [2022-11-20 12:33:00,273 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=238, PETRI_DIFFERENCE_MINUEND_FLOW=458, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=490, PETRI_PLACES=218, PETRI_TRANSITIONS=210} [2022-11-20 12:33:00,273 INFO L288 CegarLoopForPetriNet]: 212 programPoint places, 6 predicate places. [2022-11-20 12:33:00,273 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 210 transitions, 490 flow [2022-11-20 12:33:00,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 188.75) internal successors, (755), 4 states have internal predecessors, (755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:33:00,274 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:33:00,274 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:33:00,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-20 12:33:00,275 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-20 12:33:00,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:33:00,275 INFO L85 PathProgramCache]: Analyzing trace with hash -1199123880, now seen corresponding path program 1 times [2022-11-20 12:33:00,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:33:00,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712674357] [2022-11-20 12:33:00,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:33:00,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:33:00,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:33:00,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:33:00,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:33:00,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712674357] [2022-11-20 12:33:00,333 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712674357] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:33:00,333 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:33:00,333 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:33:00,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830326843] [2022-11-20 12:33:00,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:33:00,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:33:00,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:33:00,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:33:00,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:33:00,339 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 176 out of 238 [2022-11-20 12:33:00,340 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 210 transitions, 490 flow. Second operand has 4 states, 4 states have (on average 177.0) internal successors, (708), 4 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:33:00,340 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:33:00,340 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 176 of 238 [2022-11-20 12:33:00,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:33:09,141 INFO L130 PetriNetUnfolder]: 15478/55517 cut-off events. [2022-11-20 12:33:09,141 INFO L131 PetriNetUnfolder]: For 9933/9933 co-relation queries the response was YES. [2022-11-20 12:33:09,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81038 conditions, 55517 events. 15478/55517 cut-off events. For 9933/9933 co-relation queries the response was YES. Maximal size of possible extension queue 1694. Compared 785523 event pairs, 9757 based on Foata normal form. 0/48292 useless extension candidates. Maximal degree in co-relation 80976. Up to 15260 conditions per place. [2022-11-20 12:33:09,692 INFO L137 encePairwiseOnDemand]: 229/238 looper letters, 68 selfloop transitions, 10 changer transitions 0/257 dead transitions. [2022-11-20 12:33:09,692 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 257 transitions, 812 flow [2022-11-20 12:33:09,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:33:09,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 12:33:09,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 962 transitions. [2022-11-20 12:33:09,694 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8084033613445378 [2022-11-20 12:33:09,695 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 962 transitions. [2022-11-20 12:33:09,695 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 962 transitions. [2022-11-20 12:33:09,695 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:33:09,696 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 962 transitions. [2022-11-20 12:33:09,697 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 192.4) internal successors, (962), 5 states have internal predecessors, (962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:33:09,699 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 238.0) internal successors, (1428), 6 states have internal predecessors, (1428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:33:09,700 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 238.0) internal successors, (1428), 6 states have internal predecessors, (1428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:33:09,700 INFO L175 Difference]: Start difference. First operand has 218 places, 210 transitions, 490 flow. Second operand 5 states and 962 transitions. [2022-11-20 12:33:09,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 257 transitions, 812 flow [2022-11-20 12:33:09,707 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 257 transitions, 810 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 12:33:09,711 INFO L231 Difference]: Finished difference. Result has 224 places, 219 transitions, 567 flow [2022-11-20 12:33:09,711 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=238, PETRI_DIFFERENCE_MINUEND_FLOW=488, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=567, PETRI_PLACES=224, PETRI_TRANSITIONS=219} [2022-11-20 12:33:09,712 INFO L288 CegarLoopForPetriNet]: 212 programPoint places, 12 predicate places. [2022-11-20 12:33:09,712 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 219 transitions, 567 flow [2022-11-20 12:33:09,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 177.0) internal successors, (708), 4 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:33:09,712 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:33:09,713 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:33:09,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-11-20 12:33:09,713 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-20 12:33:09,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:33:09,714 INFO L85 PathProgramCache]: Analyzing trace with hash 480938093, now seen corresponding path program 1 times [2022-11-20 12:33:09,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:33:09,714 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930945910] [2022-11-20 12:33:09,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:33:09,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:33:09,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:33:09,759 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 12:33:09,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:33:09,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930945910] [2022-11-20 12:33:09,760 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930945910] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:33:09,760 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:33:09,760 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:33:09,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574467332] [2022-11-20 12:33:09,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:33:09,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:33:09,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:33:09,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:33:09,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:33:09,764 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 238 [2022-11-20 12:33:09,765 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 219 transitions, 567 flow. Second operand has 4 states, 4 states have (on average 190.75) internal successors, (763), 4 states have internal predecessors, (763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:33:09,765 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:33:09,765 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 238 [2022-11-20 12:33:09,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand