./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_02-simple_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8811a62-fe58-4b26-b824-81ded63f6ee2/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8811a62-fe58-4b26-b824-81ded63f6ee2/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_c8811a62-fe58-4b26-b824-81ded63f6ee2/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8811a62-fe58-4b26-b824-81ded63f6ee2/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_02-simple_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8811a62-fe58-4b26-b824-81ded63f6ee2/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_c8811a62-fe58-4b26-b824-81ded63f6ee2/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 b3e7d0a2f10d1449a9a354d4032bafdd0ae7a7fd76aceb835acbee3134ec74e4 --- 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 12:30:13,295 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 12:30:13,298 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 12:30:13,337 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 12:30:13,341 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 12:30:13,342 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 12:30:13,344 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 12:30:13,348 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 12:30:13,353 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 12:30:13,355 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 12:30:13,356 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 12:30:13,359 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 12:30:13,361 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 12:30:13,364 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 12:30:13,366 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 12:30:13,369 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 12:30:13,373 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 12:30:13,379 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 12:30:13,381 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 12:30:13,386 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 12:30:13,391 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 12:30:13,393 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 12:30:13,396 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 12:30:13,398 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 12:30:13,402 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 12:30:13,403 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 12:30:13,409 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 12:30:13,410 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 12:30:13,412 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 12:30:13,414 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 12:30:13,415 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 12:30:13,417 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 12:30:13,418 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 12:30:13,420 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 12:30:13,421 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 12:30:13,422 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 12:30:13,423 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 12:30:13,423 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 12:30:13,424 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 12:30:13,425 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 12:30:13,427 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 12:30:13,429 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8811a62-fe58-4b26-b824-81ded63f6ee2/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-20 12:30:13,468 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 12:30:13,472 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 12:30:13,473 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 12:30:13,473 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 12:30:13,474 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 12:30:13,475 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 12:30:13,475 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 12:30:13,476 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 12:30:13,476 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 12:30:13,476 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 12:30:13,477 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 12:30:13,478 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 12:30:13,478 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 12:30:13,478 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 12:30:13,478 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 12:30:13,479 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 12:30:13,479 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 12:30:13,479 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 12:30:13,479 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-20 12:30:13,480 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 12:30:13,480 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 12:30:13,480 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 12:30:13,480 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 12:30:13,481 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 12:30:13,481 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 12:30:13,481 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 12:30:13,481 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:30:13,482 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 12:30:13,482 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 12:30:13,483 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 12:30:13,483 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 12:30:13,483 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 12:30:13,484 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 12:30:13,484 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 12:30:13,484 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 12:30:13,484 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_c8811a62-fe58-4b26-b824-81ded63f6ee2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8811a62-fe58-4b26-b824-81ded63f6ee2/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b3e7d0a2f10d1449a9a354d4032bafdd0ae7a7fd76aceb835acbee3134ec74e4 [2022-11-20 12:30:13,818 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 12:30:13,864 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 12:30:13,868 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 12:30:13,870 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 12:30:13,871 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 12:30:13,872 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8811a62-fe58-4b26-b824-81ded63f6ee2/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/goblint-regression/28-race_reach_02-simple_racefree.i [2022-11-20 12:30:17,265 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 12:30:17,598 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 12:30:17,599 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8811a62-fe58-4b26-b824-81ded63f6ee2/sv-benchmarks/c/goblint-regression/28-race_reach_02-simple_racefree.i [2022-11-20 12:30:17,617 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8811a62-fe58-4b26-b824-81ded63f6ee2/bin/uautomizer-ug76WZFUDN/data/4b6aa5e36/5feeaadb51a1403e9a2b81cd428b9e7e/FLAGd195e14d6 [2022-11-20 12:30:17,640 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8811a62-fe58-4b26-b824-81ded63f6ee2/bin/uautomizer-ug76WZFUDN/data/4b6aa5e36/5feeaadb51a1403e9a2b81cd428b9e7e [2022-11-20 12:30:17,646 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 12:30:17,650 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 12:30:17,653 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 12:30:17,653 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 12:30:17,658 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 12:30:17,659 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:30:17" (1/1) ... [2022-11-20 12:30:17,660 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54963eed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:30:17, skipping insertion in model container [2022-11-20 12:30:17,661 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:30:17" (1/1) ... [2022-11-20 12:30:17,671 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 12:30:17,738 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 12:30:18,086 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_c8811a62-fe58-4b26-b824-81ded63f6ee2/sv-benchmarks/c/goblint-regression/28-race_reach_02-simple_racefree.i[30176,30189] [2022-11-20 12:30:18,110 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:30:18,124 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 12:30:18,158 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_c8811a62-fe58-4b26-b824-81ded63f6ee2/sv-benchmarks/c/goblint-regression/28-race_reach_02-simple_racefree.i[30176,30189] [2022-11-20 12:30:18,166 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:30:18,224 INFO L208 MainTranslator]: Completed translation [2022-11-20 12:30:18,225 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:30:18 WrapperNode [2022-11-20 12:30:18,225 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 12:30:18,227 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 12:30:18,227 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 12:30:18,227 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 12:30:18,236 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:30:18" (1/1) ... [2022-11-20 12:30:18,253 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:30:18" (1/1) ... [2022-11-20 12:30:18,275 INFO L138 Inliner]: procedures = 170, calls = 30, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 84 [2022-11-20 12:30:18,276 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 12:30:18,277 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 12:30:18,277 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 12:30:18,277 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 12:30:18,287 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:30:18" (1/1) ... [2022-11-20 12:30:18,288 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:30:18" (1/1) ... [2022-11-20 12:30:18,292 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:30:18" (1/1) ... [2022-11-20 12:30:18,292 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:30:18" (1/1) ... [2022-11-20 12:30:18,300 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:30:18" (1/1) ... [2022-11-20 12:30:18,305 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:30:18" (1/1) ... [2022-11-20 12:30:18,307 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:30:18" (1/1) ... [2022-11-20 12:30:18,309 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:30:18" (1/1) ... [2022-11-20 12:30:18,311 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 12:30:18,312 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 12:30:18,313 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 12:30:18,313 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 12:30:18,314 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:30:18" (1/1) ... [2022-11-20 12:30:18,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:30:18,335 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8811a62-fe58-4b26-b824-81ded63f6ee2/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:30:18,354 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8811a62-fe58-4b26-b824-81ded63f6ee2/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 12:30:18,361 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8811a62-fe58-4b26-b824-81ded63f6ee2/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 12:30:18,399 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 12:30:18,400 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 12:30:18,400 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-20 12:30:18,400 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 12:30:18,400 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 12:30:18,400 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-20 12:30:18,401 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-20 12:30:18,401 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 12:30:18,401 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 12:30:18,401 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 12:30:18,401 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 12:30:18,403 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 12:30:18,564 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 12:30:18,567 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 12:30:18,840 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 12:30:18,850 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 12:30:18,850 INFO L300 CfgBuilder]: Removed 10 assume(true) statements. [2022-11-20 12:30:18,853 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:30:18 BoogieIcfgContainer [2022-11-20 12:30:18,853 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 12:30:18,856 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 12:30:18,856 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 12:30:18,860 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 12:30:18,860 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 12:30:17" (1/3) ... [2022-11-20 12:30:18,861 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21af71d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:30:18, skipping insertion in model container [2022-11-20 12:30:18,861 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:30:18" (2/3) ... [2022-11-20 12:30:18,862 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21af71d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:30:18, skipping insertion in model container [2022-11-20 12:30:18,862 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:30:18" (3/3) ... [2022-11-20 12:30:18,864 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_02-simple_racefree.i [2022-11-20 12:30:18,874 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-20 12:30:18,887 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 12:30:18,887 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-11-20 12:30:18,887 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 12:30:19,104 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-11-20 12:30:19,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 120 places, 129 transitions, 266 flow [2022-11-20 12:30:19,314 INFO L130 PetriNetUnfolder]: 17/164 cut-off events. [2022-11-20 12:30:19,314 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-20 12:30:19,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 170 conditions, 164 events. 17/164 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 368 event pairs, 0 based on Foata normal form. 0/136 useless extension candidates. Maximal degree in co-relation 80. Up to 4 conditions per place. [2022-11-20 12:30:19,323 INFO L82 GeneralOperation]: Start removeDead. Operand has 120 places, 129 transitions, 266 flow [2022-11-20 12:30:19,331 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 118 places, 126 transitions, 260 flow [2022-11-20 12:30:19,356 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 12:30:19,365 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;@360a60f6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 12:30:19,366 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2022-11-20 12:30:19,405 INFO L130 PetriNetUnfolder]: 2/68 cut-off events. [2022-11-20 12:30:19,405 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 12:30:19,405 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:30:19,406 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] [2022-11-20 12:30:19,407 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 12:30:19,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:30:19,414 INFO L85 PathProgramCache]: Analyzing trace with hash -868357618, now seen corresponding path program 1 times [2022-11-20 12:30:19,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:30:19,427 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240570403] [2022-11-20 12:30:19,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:30:19,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:30:19,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:30:19,947 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 12:30:19,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:30:19,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240570403] [2022-11-20 12:30:19,949 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240570403] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:30:19,950 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:30:19,950 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:30:19,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97176262] [2022-11-20 12:30:19,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:30:19,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:30:19,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:30:20,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:30:20,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:30:20,049 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 129 [2022-11-20 12:30:20,055 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 126 transitions, 260 flow. Second operand has 4 states, 4 states have (on average 104.75) internal successors, (419), 4 states have internal predecessors, (419), 0 states have call successors, (0), 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 12:30:20,056 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:30:20,056 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 129 [2022-11-20 12:30:20,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:30:20,210 INFO L130 PetriNetUnfolder]: 0/116 cut-off events. [2022-11-20 12:30:20,210 INFO L131 PetriNetUnfolder]: For 3/12 co-relation queries the response was YES. [2022-11-20 12:30:20,211 INFO L83 FinitePrefix]: Finished finitePrefix Result has 137 conditions, 116 events. 0/116 cut-off events. For 3/12 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 104 event pairs, 0 based on Foata normal form. 41/149 useless extension candidates. Maximal degree in co-relation 0. Up to 7 conditions per place. [2022-11-20 12:30:20,213 INFO L137 encePairwiseOnDemand]: 111/129 looper letters, 10 selfloop transitions, 4 changer transitions 0/114 dead transitions. [2022-11-20 12:30:20,213 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 114 transitions, 264 flow [2022-11-20 12:30:20,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:30:20,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 12:30:20,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 562 transitions. [2022-11-20 12:30:20,239 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8713178294573644 [2022-11-20 12:30:20,240 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 562 transitions. [2022-11-20 12:30:20,240 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 562 transitions. [2022-11-20 12:30:20,245 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:30:20,248 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 562 transitions. [2022-11-20 12:30:20,255 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 112.4) internal successors, (562), 5 states have internal predecessors, (562), 0 states have call successors, (0), 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 12:30:20,265 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 129.0) internal successors, (774), 6 states have internal predecessors, (774), 0 states have call successors, (0), 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 12:30:20,266 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 129.0) internal successors, (774), 6 states have internal predecessors, (774), 0 states have call successors, (0), 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 12:30:20,268 INFO L175 Difference]: Start difference. First operand has 118 places, 126 transitions, 260 flow. Second operand 5 states and 562 transitions. [2022-11-20 12:30:20,270 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 114 transitions, 264 flow [2022-11-20 12:30:20,276 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 114 transitions, 264 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 12:30:20,283 INFO L231 Difference]: Finished difference. Result has 120 places, 112 transitions, 244 flow [2022-11-20 12:30:20,286 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=244, PETRI_PLACES=120, PETRI_TRANSITIONS=112} [2022-11-20 12:30:20,292 INFO L288 CegarLoopForPetriNet]: 118 programPoint places, 2 predicate places. [2022-11-20 12:30:20,293 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 112 transitions, 244 flow [2022-11-20 12:30:20,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 104.75) internal successors, (419), 4 states have internal predecessors, (419), 0 states have call successors, (0), 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 12:30:20,294 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:30:20,295 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 12:30:20,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 12:30:20,296 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 12:30:20,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:30:20,297 INFO L85 PathProgramCache]: Analyzing trace with hash 1121503793, now seen corresponding path program 1 times [2022-11-20 12:30:20,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:30:20,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212855692] [2022-11-20 12:30:20,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:30:20,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:30:20,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:30:20,564 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 12:30:20,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:30:20,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212855692] [2022-11-20 12:30:20,565 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212855692] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:30:20,565 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:30:20,567 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:30:20,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505051256] [2022-11-20 12:30:20,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:30:20,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:30:20,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:30:20,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:30:20,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:30:20,574 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 129 [2022-11-20 12:30:20,576 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 112 transitions, 244 flow. Second operand has 4 states, 4 states have (on average 105.0) internal successors, (420), 4 states have internal predecessors, (420), 0 states have call successors, (0), 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 12:30:20,577 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:30:20,577 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 129 [2022-11-20 12:30:20,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:30:20,692 INFO L130 PetriNetUnfolder]: 7/161 cut-off events. [2022-11-20 12:30:20,693 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2022-11-20 12:30:20,696 INFO L83 FinitePrefix]: Finished finitePrefix Result has 201 conditions, 161 events. 7/161 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 383 event pairs, 2 based on Foata normal form. 0/150 useless extension candidates. Maximal degree in co-relation 138. Up to 11 conditions per place. [2022-11-20 12:30:20,701 INFO L137 encePairwiseOnDemand]: 123/129 looper letters, 10 selfloop transitions, 4 changer transitions 0/113 dead transitions. [2022-11-20 12:30:20,701 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 113 transitions, 274 flow [2022-11-20 12:30:20,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:30:20,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 12:30:20,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 536 transitions. [2022-11-20 12:30:20,705 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8310077519379845 [2022-11-20 12:30:20,705 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 536 transitions. [2022-11-20 12:30:20,705 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 536 transitions. [2022-11-20 12:30:20,705 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:30:20,706 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 536 transitions. [2022-11-20 12:30:20,708 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 107.2) internal successors, (536), 5 states have internal predecessors, (536), 0 states have call successors, (0), 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 12:30:20,710 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 129.0) internal successors, (774), 6 states have internal predecessors, (774), 0 states have call successors, (0), 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 12:30:20,711 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 129.0) internal successors, (774), 6 states have internal predecessors, (774), 0 states have call successors, (0), 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 12:30:20,711 INFO L175 Difference]: Start difference. First operand has 120 places, 112 transitions, 244 flow. Second operand 5 states and 536 transitions. [2022-11-20 12:30:20,711 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 113 transitions, 274 flow [2022-11-20 12:30:20,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 113 transitions, 266 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-20 12:30:20,718 INFO L231 Difference]: Finished difference. Result has 118 places, 110 transitions, 240 flow [2022-11-20 12:30:20,718 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=240, PETRI_PLACES=118, PETRI_TRANSITIONS=110} [2022-11-20 12:30:20,719 INFO L288 CegarLoopForPetriNet]: 118 programPoint places, 0 predicate places. [2022-11-20 12:30:20,719 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 110 transitions, 240 flow [2022-11-20 12:30:20,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 105.0) internal successors, (420), 4 states have internal predecessors, (420), 0 states have call successors, (0), 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 12:30:20,720 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:30:20,721 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] [2022-11-20 12:30:20,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 12:30:20,723 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 12:30:20,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:30:20,723 INFO L85 PathProgramCache]: Analyzing trace with hash -1026026617, now seen corresponding path program 1 times [2022-11-20 12:30:20,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:30:20,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671514774] [2022-11-20 12:30:20,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:30:20,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:30:20,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:30:20,751 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 12:30:20,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:30:20,800 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 12:30:20,801 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-20 12:30:20,802 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2022-11-20 12:30:20,804 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2022-11-20 12:30:20,805 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2022-11-20 12:30:20,805 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2022-11-20 12:30:20,805 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 13 remaining) [2022-11-20 12:30:20,805 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 13 remaining) [2022-11-20 12:30:20,806 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 13 remaining) [2022-11-20 12:30:20,806 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 13 remaining) [2022-11-20 12:30:20,806 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 13 remaining) [2022-11-20 12:30:20,806 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 13 remaining) [2022-11-20 12:30:20,807 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2022-11-20 12:30:20,807 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2022-11-20 12:30:20,807 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2022-11-20 12:30:20,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 12:30:20,808 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-11-20 12:30:20,811 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-20 12:30:20,811 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-20 12:30:20,840 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-20 12:30:20,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 153 places, 167 transitions, 352 flow [2022-11-20 12:30:20,906 INFO L130 PetriNetUnfolder]: 31/274 cut-off events. [2022-11-20 12:30:20,907 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-20 12:30:20,909 INFO L83 FinitePrefix]: Finished finitePrefix Result has 288 conditions, 274 events. 31/274 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 785 event pairs, 0 based on Foata normal form. 0/221 useless extension candidates. Maximal degree in co-relation 166. Up to 8 conditions per place. [2022-11-20 12:30:20,909 INFO L82 GeneralOperation]: Start removeDead. Operand has 153 places, 167 transitions, 352 flow [2022-11-20 12:30:20,912 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 153 places, 167 transitions, 352 flow [2022-11-20 12:30:20,914 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 12:30:20,915 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;@360a60f6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 12:30:20,915 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2022-11-20 12:30:20,923 INFO L130 PetriNetUnfolder]: 2/68 cut-off events. [2022-11-20 12:30:20,923 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 12:30:20,923 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:30:20,923 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] [2022-11-20 12:30:20,924 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 12:30:20,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:30:20,924 INFO L85 PathProgramCache]: Analyzing trace with hash -1021233991, now seen corresponding path program 1 times [2022-11-20 12:30:20,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:30:20,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069593109] [2022-11-20 12:30:20,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:30:20,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:30:20,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:30:21,079 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 12:30:21,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:30:21,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069593109] [2022-11-20 12:30:21,080 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069593109] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:30:21,080 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:30:21,081 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:30:21,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605850965] [2022-11-20 12:30:21,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:30:21,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:30:21,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:30:21,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:30:21,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:30:21,085 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 167 [2022-11-20 12:30:21,086 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 167 transitions, 352 flow. Second operand has 4 states, 4 states have (on average 134.75) internal successors, (539), 4 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:30:21,086 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:30:21,086 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 167 [2022-11-20 12:30:21,086 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:30:21,240 INFO L130 PetriNetUnfolder]: 2/225 cut-off events. [2022-11-20 12:30:21,241 INFO L131 PetriNetUnfolder]: For 14/46 co-relation queries the response was YES. [2022-11-20 12:30:21,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 268 conditions, 225 events. 2/225 cut-off events. For 14/46 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 518 event pairs, 0 based on Foata normal form. 125/326 useless extension candidates. Maximal degree in co-relation 141. Up to 21 conditions per place. [2022-11-20 12:30:21,243 INFO L137 encePairwiseOnDemand]: 143/167 looper letters, 19 selfloop transitions, 4 changer transitions 0/156 dead transitions. [2022-11-20 12:30:21,243 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 156 transitions, 376 flow [2022-11-20 12:30:21,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:30:21,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 12:30:21,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 727 transitions. [2022-11-20 12:30:21,247 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8706586826347306 [2022-11-20 12:30:21,247 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 727 transitions. [2022-11-20 12:30:21,247 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 727 transitions. [2022-11-20 12:30:21,248 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:30:21,248 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 727 transitions. [2022-11-20 12:30:21,251 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 145.4) internal successors, (727), 5 states have internal predecessors, (727), 0 states have call successors, (0), 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 12:30:21,253 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 167.0) internal successors, (1002), 6 states have internal predecessors, (1002), 0 states have call successors, (0), 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 12:30:21,254 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 167.0) internal successors, (1002), 6 states have internal predecessors, (1002), 0 states have call successors, (0), 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 12:30:21,254 INFO L175 Difference]: Start difference. First operand has 153 places, 167 transitions, 352 flow. Second operand 5 states and 727 transitions. [2022-11-20 12:30:21,255 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 156 transitions, 376 flow [2022-11-20 12:30:21,257 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 156 transitions, 376 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 12:30:21,260 INFO L231 Difference]: Finished difference. Result has 159 places, 152 transitions, 348 flow [2022-11-20 12:30:21,261 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=316, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=348, PETRI_PLACES=159, PETRI_TRANSITIONS=152} [2022-11-20 12:30:21,262 INFO L288 CegarLoopForPetriNet]: 153 programPoint places, 6 predicate places. [2022-11-20 12:30:21,262 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 152 transitions, 348 flow [2022-11-20 12:30:21,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 134.75) internal successors, (539), 4 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:30:21,263 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:30:21,263 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 12:30:21,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 12:30:21,264 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 12:30:21,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:30:21,265 INFO L85 PathProgramCache]: Analyzing trace with hash 750729500, now seen corresponding path program 1 times [2022-11-20 12:30:21,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:30:21,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827052515] [2022-11-20 12:30:21,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:30:21,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:30:21,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:30:21,367 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 12:30:21,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:30:21,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827052515] [2022-11-20 12:30:21,368 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827052515] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:30:21,369 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:30:21,369 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:30:21,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483243930] [2022-11-20 12:30:21,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:30:21,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:30:21,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:30:21,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:30:21,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:30:21,372 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 167 [2022-11-20 12:30:21,374 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 152 transitions, 348 flow. Second operand has 4 states, 4 states have (on average 131.0) internal successors, (524), 4 states have internal predecessors, (524), 0 states have call successors, (0), 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 12:30:21,374 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:30:21,374 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 167 [2022-11-20 12:30:21,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:30:21,738 INFO L130 PetriNetUnfolder]: 170/1134 cut-off events. [2022-11-20 12:30:21,738 INFO L131 PetriNetUnfolder]: For 96/96 co-relation queries the response was YES. [2022-11-20 12:30:21,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1537 conditions, 1134 events. 170/1134 cut-off events. For 96/96 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 8019 event pairs, 76 based on Foata normal form. 0/982 useless extension candidates. Maximal degree in co-relation 1468. Up to 207 conditions per place. [2022-11-20 12:30:21,752 INFO L137 encePairwiseOnDemand]: 160/167 looper letters, 36 selfloop transitions, 6 changer transitions 0/175 dead transitions. [2022-11-20 12:30:21,753 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 175 transitions, 496 flow [2022-11-20 12:30:21,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:30:21,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 12:30:21,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 696 transitions. [2022-11-20 12:30:21,756 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8335329341317366 [2022-11-20 12:30:21,756 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 696 transitions. [2022-11-20 12:30:21,756 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 696 transitions. [2022-11-20 12:30:21,757 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:30:21,757 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 696 transitions. [2022-11-20 12:30:21,759 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 139.2) internal successors, (696), 5 states have internal predecessors, (696), 0 states have call successors, (0), 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 12:30:21,761 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 167.0) internal successors, (1002), 6 states have internal predecessors, (1002), 0 states have call successors, (0), 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 12:30:21,762 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 167.0) internal successors, (1002), 6 states have internal predecessors, (1002), 0 states have call successors, (0), 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 12:30:21,762 INFO L175 Difference]: Start difference. First operand has 159 places, 152 transitions, 348 flow. Second operand 5 states and 696 transitions. [2022-11-20 12:30:21,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 175 transitions, 496 flow [2022-11-20 12:30:21,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 175 transitions, 494 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 12:30:21,768 INFO L231 Difference]: Finished difference. Result has 165 places, 157 transitions, 395 flow [2022-11-20 12:30:21,769 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=346, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=395, PETRI_PLACES=165, PETRI_TRANSITIONS=157} [2022-11-20 12:30:21,771 INFO L288 CegarLoopForPetriNet]: 153 programPoint places, 12 predicate places. [2022-11-20 12:30:21,771 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 157 transitions, 395 flow [2022-11-20 12:30:21,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 131.0) internal successors, (524), 4 states have internal predecessors, (524), 0 states have call successors, (0), 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 12:30:21,772 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:30:21,773 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:30:21,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 12:30:21,774 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 12:30:21,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:30:21,775 INFO L85 PathProgramCache]: Analyzing trace with hash 1066304607, now seen corresponding path program 1 times [2022-11-20 12:30:21,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:30:21,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306147002] [2022-11-20 12:30:21,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:30:21,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:30:21,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:30:21,863 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 12:30:21,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:30:21,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306147002] [2022-11-20 12:30:21,864 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306147002] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:30:21,865 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:30:21,865 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:30:21,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059111200] [2022-11-20 12:30:21,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:30:21,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:30:21,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:30:21,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:30:21,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:30:21,868 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 167 [2022-11-20 12:30:21,869 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 157 transitions, 395 flow. Second operand has 4 states, 4 states have (on average 136.75) internal successors, (547), 4 states have internal predecessors, (547), 0 states have call successors, (0), 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 12:30:21,870 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:30:21,870 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 167 [2022-11-20 12:30:21,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:30:21,980 INFO L130 PetriNetUnfolder]: 5/351 cut-off events. [2022-11-20 12:30:21,980 INFO L131 PetriNetUnfolder]: For 45/107 co-relation queries the response was YES. [2022-11-20 12:30:21,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 445 conditions, 351 events. 5/351 cut-off events. For 45/107 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1197 event pairs, 0 based on Foata normal form. 16/333 useless extension candidates. Maximal degree in co-relation 292. Up to 16 conditions per place. [2022-11-20 12:30:21,983 INFO L137 encePairwiseOnDemand]: 161/167 looper letters, 11 selfloop transitions, 8 changer transitions 0/157 dead transitions. [2022-11-20 12:30:21,983 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 157 transitions, 431 flow [2022-11-20 12:30:21,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:30:21,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 12:30:21,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 682 transitions. [2022-11-20 12:30:21,986 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8167664670658683 [2022-11-20 12:30:21,986 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 682 transitions. [2022-11-20 12:30:21,986 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 682 transitions. [2022-11-20 12:30:21,987 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:30:21,987 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 682 transitions. [2022-11-20 12:30:21,988 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 136.4) internal successors, (682), 5 states have internal predecessors, (682), 0 states have call successors, (0), 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 12:30:21,990 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 167.0) internal successors, (1002), 6 states have internal predecessors, (1002), 0 states have call successors, (0), 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 12:30:21,991 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 167.0) internal successors, (1002), 6 states have internal predecessors, (1002), 0 states have call successors, (0), 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 12:30:21,991 INFO L175 Difference]: Start difference. First operand has 165 places, 157 transitions, 395 flow. Second operand 5 states and 682 transitions. [2022-11-20 12:30:21,991 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 157 transitions, 431 flow [2022-11-20 12:30:21,993 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 157 transitions, 428 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 12:30:21,995 INFO L231 Difference]: Finished difference. Result has 168 places, 157 transitions, 412 flow [2022-11-20 12:30:21,996 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=388, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=412, PETRI_PLACES=168, PETRI_TRANSITIONS=157} [2022-11-20 12:30:21,997 INFO L288 CegarLoopForPetriNet]: 153 programPoint places, 15 predicate places. [2022-11-20 12:30:21,997 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 157 transitions, 412 flow [2022-11-20 12:30:21,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 136.75) internal successors, (547), 4 states have internal predecessors, (547), 0 states have call successors, (0), 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 12:30:21,998 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:30:21,998 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:30:21,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 12:30:21,999 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 12:30:21,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:30:21,999 INFO L85 PathProgramCache]: Analyzing trace with hash -1304295104, now seen corresponding path program 1 times [2022-11-20 12:30:21,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:30:22,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282930058] [2022-11-20 12:30:22,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:30:22,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:30:22,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:30:22,107 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 12:30:22,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:30:22,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282930058] [2022-11-20 12:30:22,108 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282930058] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:30:22,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1409442614] [2022-11-20 12:30:22,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:30:22,109 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:30:22,109 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8811a62-fe58-4b26-b824-81ded63f6ee2/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:30:22,113 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8811a62-fe58-4b26-b824-81ded63f6ee2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:30:22,120 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8811a62-fe58-4b26-b824-81ded63f6ee2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 12:30:22,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:30:22,224 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 12:30:22,228 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:30:22,353 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 12:30:22,353 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:30:22,353 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1409442614] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:30:22,353 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:30:22,354 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-20 12:30:22,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31529243] [2022-11-20 12:30:22,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:30:22,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:30:22,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:30:22,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:30:22,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:30:22,357 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 167 [2022-11-20 12:30:22,358 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 157 transitions, 412 flow. Second operand has 6 states, 6 states have (on average 135.66666666666666) internal successors, (814), 6 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 12:30:22,359 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:30:22,359 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 167 [2022-11-20 12:30:22,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:30:22,535 INFO L130 PetriNetUnfolder]: 5/350 cut-off events. [2022-11-20 12:30:22,536 INFO L131 PetriNetUnfolder]: For 55/112 co-relation queries the response was YES. [2022-11-20 12:30:22,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 453 conditions, 350 events. 5/350 cut-off events. For 55/112 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1188 event pairs, 0 based on Foata normal form. 9/325 useless extension candidates. Maximal degree in co-relation 293. Up to 19 conditions per place. [2022-11-20 12:30:22,539 INFO L137 encePairwiseOnDemand]: 162/167 looper letters, 15 selfloop transitions, 6 changer transitions 0/159 dead transitions. [2022-11-20 12:30:22,540 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 159 transitions, 456 flow [2022-11-20 12:30:22,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 12:30:22,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 12:30:22,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 953 transitions. [2022-11-20 12:30:22,544 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8152266894781864 [2022-11-20 12:30:22,544 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 953 transitions. [2022-11-20 12:30:22,544 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 953 transitions. [2022-11-20 12:30:22,545 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:30:22,545 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 953 transitions. [2022-11-20 12:30:22,548 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 136.14285714285714) internal successors, (953), 7 states have internal predecessors, (953), 0 states have call successors, (0), 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 12:30:22,551 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 167.0) internal successors, (1336), 8 states have internal predecessors, (1336), 0 states have call successors, (0), 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 12:30:22,552 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 167.0) internal successors, (1336), 8 states have internal predecessors, (1336), 0 states have call successors, (0), 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 12:30:22,552 INFO L175 Difference]: Start difference. First operand has 168 places, 157 transitions, 412 flow. Second operand 7 states and 953 transitions. [2022-11-20 12:30:22,552 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 159 transitions, 456 flow [2022-11-20 12:30:22,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 159 transitions, 444 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 12:30:22,563 INFO L231 Difference]: Finished difference. Result has 170 places, 156 transitions, 408 flow [2022-11-20 12:30:22,564 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=396, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=408, PETRI_PLACES=170, PETRI_TRANSITIONS=156} [2022-11-20 12:30:22,565 INFO L288 CegarLoopForPetriNet]: 153 programPoint places, 17 predicate places. [2022-11-20 12:30:22,566 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 156 transitions, 408 flow [2022-11-20 12:30:22,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 135.66666666666666) internal successors, (814), 6 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 12:30:22,567 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:30:22,567 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:30:22,580 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8811a62-fe58-4b26-b824-81ded63f6ee2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-20 12:30:22,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8811a62-fe58-4b26-b824-81ded63f6ee2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-20 12:30:22,774 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 12:30:22,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:30:22,774 INFO L85 PathProgramCache]: Analyzing trace with hash 453199841, now seen corresponding path program 1 times [2022-11-20 12:30:22,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:30:22,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154903648] [2022-11-20 12:30:22,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:30:22,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:30:22,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:30:22,977 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 12:30:22,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:30:22,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154903648] [2022-11-20 12:30:22,977 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154903648] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:30:22,978 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:30:22,978 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:30:22,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566194468] [2022-11-20 12:30:22,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:30:22,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:30:22,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:30:22,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:30:22,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:30:22,984 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 167 [2022-11-20 12:30:22,985 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 156 transitions, 408 flow. Second operand has 6 states, 6 states have (on average 126.5) internal successors, (759), 6 states have internal predecessors, (759), 0 states have call successors, (0), 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 12:30:22,986 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:30:22,986 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 167 [2022-11-20 12:30:22,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:30:23,533 INFO L130 PetriNetUnfolder]: 342/1780 cut-off events. [2022-11-20 12:30:23,534 INFO L131 PetriNetUnfolder]: For 313/315 co-relation queries the response was YES. [2022-11-20 12:30:23,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2697 conditions, 1780 events. 342/1780 cut-off events. For 313/315 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 14504 event pairs, 80 based on Foata normal form. 2/1556 useless extension candidates. Maximal degree in co-relation 1945. Up to 237 conditions per place. [2022-11-20 12:30:23,557 INFO L137 encePairwiseOnDemand]: 156/167 looper letters, 60 selfloop transitions, 19 changer transitions 0/206 dead transitions. [2022-11-20 12:30:23,557 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 206 transitions, 716 flow [2022-11-20 12:30:23,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 12:30:23,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-20 12:30:23,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1206 transitions. [2022-11-20 12:30:23,562 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8023952095808383 [2022-11-20 12:30:23,562 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1206 transitions. [2022-11-20 12:30:23,562 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1206 transitions. [2022-11-20 12:30:23,563 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:30:23,564 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1206 transitions. [2022-11-20 12:30:23,567 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 134.0) internal successors, (1206), 9 states have internal predecessors, (1206), 0 states have call successors, (0), 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 12:30:23,570 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 167.0) internal successors, (1670), 10 states have internal predecessors, (1670), 0 states have call successors, (0), 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 12:30:23,571 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 167.0) internal successors, (1670), 10 states have internal predecessors, (1670), 0 states have call successors, (0), 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 12:30:23,571 INFO L175 Difference]: Start difference. First operand has 170 places, 156 transitions, 408 flow. Second operand 9 states and 1206 transitions. [2022-11-20 12:30:23,572 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 206 transitions, 716 flow [2022-11-20 12:30:23,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 206 transitions, 705 flow, removed 1 selfloop flow, removed 5 redundant places. [2022-11-20 12:30:23,579 INFO L231 Difference]: Finished difference. Result has 179 places, 168 transitions, 523 flow [2022-11-20 12:30:23,580 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=397, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=523, PETRI_PLACES=179, PETRI_TRANSITIONS=168} [2022-11-20 12:30:23,581 INFO L288 CegarLoopForPetriNet]: 153 programPoint places, 26 predicate places. [2022-11-20 12:30:23,582 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 168 transitions, 523 flow [2022-11-20 12:30:23,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 126.5) internal successors, (759), 6 states have internal predecessors, (759), 0 states have call successors, (0), 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 12:30:23,582 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:30:23,583 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:30:23,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 12:30:23,583 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 12:30:23,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:30:23,584 INFO L85 PathProgramCache]: Analyzing trace with hash 1164293716, now seen corresponding path program 1 times [2022-11-20 12:30:23,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:30:23,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711970831] [2022-11-20 12:30:23,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:30:23,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:30:23,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:30:23,753 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 12:30:23,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:30:23,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711970831] [2022-11-20 12:30:23,754 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711970831] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:30:23,754 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:30:23,754 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:30:23,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244863414] [2022-11-20 12:30:23,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:30:23,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:30:23,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:30:23,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:30:23,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:30:23,758 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 167 [2022-11-20 12:30:23,759 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 168 transitions, 523 flow. Second operand has 6 states, 6 states have (on average 126.66666666666667) internal successors, (760), 6 states have internal predecessors, (760), 0 states have call successors, (0), 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 12:30:23,759 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:30:23,760 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 167 [2022-11-20 12:30:23,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:30:24,305 INFO L130 PetriNetUnfolder]: 319/1623 cut-off events. [2022-11-20 12:30:24,306 INFO L131 PetriNetUnfolder]: For 921/938 co-relation queries the response was YES. [2022-11-20 12:30:24,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2913 conditions, 1623 events. 319/1623 cut-off events. For 921/938 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 13107 event pairs, 64 based on Foata normal form. 30/1505 useless extension candidates. Maximal degree in co-relation 2593. Up to 272 conditions per place. [2022-11-20 12:30:24,327 INFO L137 encePairwiseOnDemand]: 156/167 looper letters, 65 selfloop transitions, 19 changer transitions 0/211 dead transitions. [2022-11-20 12:30:24,328 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 211 transitions, 858 flow [2022-11-20 12:30:24,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 12:30:24,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-20 12:30:24,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1208 transitions. [2022-11-20 12:30:24,332 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.803725881570193 [2022-11-20 12:30:24,332 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1208 transitions. [2022-11-20 12:30:24,332 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1208 transitions. [2022-11-20 12:30:24,333 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:30:24,333 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1208 transitions. [2022-11-20 12:30:24,337 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 134.22222222222223) internal successors, (1208), 9 states have internal predecessors, (1208), 0 states have call successors, (0), 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 12:30:24,340 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 167.0) internal successors, (1670), 10 states have internal predecessors, (1670), 0 states have call successors, (0), 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 12:30:24,341 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 167.0) internal successors, (1670), 10 states have internal predecessors, (1670), 0 states have call successors, (0), 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 12:30:24,341 INFO L175 Difference]: Start difference. First operand has 179 places, 168 transitions, 523 flow. Second operand 9 states and 1208 transitions. [2022-11-20 12:30:24,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 211 transitions, 858 flow [2022-11-20 12:30:24,348 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 211 transitions, 817 flow, removed 11 selfloop flow, removed 4 redundant places. [2022-11-20 12:30:24,352 INFO L231 Difference]: Finished difference. Result has 185 places, 172 transitions, 570 flow [2022-11-20 12:30:24,352 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=488, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=570, PETRI_PLACES=185, PETRI_TRANSITIONS=172} [2022-11-20 12:30:24,353 INFO L288 CegarLoopForPetriNet]: 153 programPoint places, 32 predicate places. [2022-11-20 12:30:24,353 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 172 transitions, 570 flow [2022-11-20 12:30:24,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 126.66666666666667) internal successors, (760), 6 states have internal predecessors, (760), 0 states have call successors, (0), 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 12:30:24,354 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:30:24,354 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 12:30:24,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-20 12:30:24,355 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 12:30:24,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:30:24,356 INFO L85 PathProgramCache]: Analyzing trace with hash 1486198722, now seen corresponding path program 1 times [2022-11-20 12:30:24,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:30:24,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667152054] [2022-11-20 12:30:24,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:30:24,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:30:24,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:30:24,447 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 12:30:24,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:30:24,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667152054] [2022-11-20 12:30:24,448 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667152054] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:30:24,448 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:30:24,448 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:30:24,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332186709] [2022-11-20 12:30:24,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:30:24,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:30:24,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:30:24,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:30:24,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:30:24,451 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 167 [2022-11-20 12:30:24,452 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 172 transitions, 570 flow. Second operand has 4 states, 4 states have (on average 131.25) internal successors, (525), 4 states have internal predecessors, (525), 0 states have call successors, (0), 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 12:30:24,452 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:30:24,452 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 167 [2022-11-20 12:30:24,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:30:24,896 INFO L130 PetriNetUnfolder]: 265/1936 cut-off events. [2022-11-20 12:30:24,896 INFO L131 PetriNetUnfolder]: For 1178/1225 co-relation queries the response was YES. [2022-11-20 12:30:24,911 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3312 conditions, 1936 events. 265/1936 cut-off events. For 1178/1225 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 16579 event pairs, 127 based on Foata normal form. 24/1762 useless extension candidates. Maximal degree in co-relation 2548. Up to 362 conditions per place. [2022-11-20 12:30:24,922 INFO L137 encePairwiseOnDemand]: 160/167 looper letters, 55 selfloop transitions, 7 changer transitions 0/198 dead transitions. [2022-11-20 12:30:24,922 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 198 transitions, 832 flow [2022-11-20 12:30:24,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:30:24,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 12:30:24,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 694 transitions. [2022-11-20 12:30:24,925 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8311377245508982 [2022-11-20 12:30:24,925 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 694 transitions. [2022-11-20 12:30:24,925 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 694 transitions. [2022-11-20 12:30:24,926 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:30:24,926 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 694 transitions. [2022-11-20 12:30:24,927 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 138.8) internal successors, (694), 5 states have internal predecessors, (694), 0 states have call successors, (0), 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 12:30:24,929 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 167.0) internal successors, (1002), 6 states have internal predecessors, (1002), 0 states have call successors, (0), 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 12:30:24,930 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 167.0) internal successors, (1002), 6 states have internal predecessors, (1002), 0 states have call successors, (0), 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 12:30:24,930 INFO L175 Difference]: Start difference. First operand has 185 places, 172 transitions, 570 flow. Second operand 5 states and 694 transitions. [2022-11-20 12:30:24,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 198 transitions, 832 flow [2022-11-20 12:30:24,937 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 198 transitions, 804 flow, removed 2 selfloop flow, removed 4 redundant places. [2022-11-20 12:30:24,940 INFO L231 Difference]: Finished difference. Result has 188 places, 175 transitions, 600 flow [2022-11-20 12:30:24,941 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=552, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=600, PETRI_PLACES=188, PETRI_TRANSITIONS=175} [2022-11-20 12:30:24,942 INFO L288 CegarLoopForPetriNet]: 153 programPoint places, 35 predicate places. [2022-11-20 12:30:24,942 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 175 transitions, 600 flow [2022-11-20 12:30:24,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 131.25) internal successors, (525), 4 states have internal predecessors, (525), 0 states have call successors, (0), 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 12:30:24,943 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:30:24,943 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, 1] [2022-11-20 12:30:24,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-20 12:30:24,943 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 12:30:24,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:30:24,944 INFO L85 PathProgramCache]: Analyzing trace with hash 1730400380, now seen corresponding path program 1 times [2022-11-20 12:30:24,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:30:24,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738711825] [2022-11-20 12:30:24,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:30:24,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:30:24,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:30:24,980 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 12:30:24,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:30:25,011 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 12:30:25,012 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-20 12:30:25,012 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2022-11-20 12:30:25,012 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2022-11-20 12:30:25,013 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2022-11-20 12:30:25,013 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2022-11-20 12:30:25,013 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2022-11-20 12:30:25,014 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2022-11-20 12:30:25,014 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2022-11-20 12:30:25,014 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2022-11-20 12:30:25,014 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 17 remaining) [2022-11-20 12:30:25,015 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 17 remaining) [2022-11-20 12:30:25,015 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 17 remaining) [2022-11-20 12:30:25,015 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2022-11-20 12:30:25,015 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2022-11-20 12:30:25,016 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2022-11-20 12:30:25,016 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2022-11-20 12:30:25,016 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2022-11-20 12:30:25,016 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2022-11-20 12:30:25,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-20 12:30:25,017 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:30:25,017 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-20 12:30:25,018 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-20 12:30:25,070 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-20 12:30:25,074 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 186 places, 205 transitions, 440 flow [2022-11-20 12:30:25,141 INFO L130 PetriNetUnfolder]: 50/425 cut-off events. [2022-11-20 12:30:25,142 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-11-20 12:30:25,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 453 conditions, 425 events. 50/425 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1398 event pairs, 1 based on Foata normal form. 0/339 useless extension candidates. Maximal degree in co-relation 282. Up to 16 conditions per place. [2022-11-20 12:30:25,147 INFO L82 GeneralOperation]: Start removeDead. Operand has 186 places, 205 transitions, 440 flow [2022-11-20 12:30:25,154 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 186 places, 205 transitions, 440 flow [2022-11-20 12:30:25,155 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 12:30:25,159 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;@360a60f6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 12:30:25,159 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2022-11-20 12:30:25,165 INFO L130 PetriNetUnfolder]: 2/68 cut-off events. [2022-11-20 12:30:25,166 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 12:30:25,166 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:30:25,166 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] [2022-11-20 12:30:25,167 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 12:30:25,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:30:25,167 INFO L85 PathProgramCache]: Analyzing trace with hash -804967862, now seen corresponding path program 1 times [2022-11-20 12:30:25,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:30:25,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882112356] [2022-11-20 12:30:25,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:30:25,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:30:25,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:30:25,270 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 12:30:25,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:30:25,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882112356] [2022-11-20 12:30:25,273 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882112356] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:30:25,274 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:30:25,274 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:30:25,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899759046] [2022-11-20 12:30:25,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:30:25,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:30:25,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:30:25,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:30:25,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:30:25,278 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 205 [2022-11-20 12:30:25,279 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 205 transitions, 440 flow. Second operand has 4 states, 4 states have (on average 164.75) internal successors, (659), 4 states have internal predecessors, (659), 0 states have call successors, (0), 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 12:30:25,279 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:30:25,279 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 205 [2022-11-20 12:30:25,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:30:25,427 INFO L130 PetriNetUnfolder]: 7/361 cut-off events. [2022-11-20 12:30:25,427 INFO L131 PetriNetUnfolder]: For 96/244 co-relation queries the response was YES. [2022-11-20 12:30:25,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 437 conditions, 361 events. 7/361 cut-off events. For 96/244 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1115 event pairs, 1 based on Foata normal form. 305/622 useless extension candidates. Maximal degree in co-relation 261. Up to 40 conditions per place. [2022-11-20 12:30:25,433 INFO L137 encePairwiseOnDemand]: 175/205 looper letters, 21 selfloop transitions, 4 changer transitions 0/188 dead transitions. [2022-11-20 12:30:25,433 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 188 transitions, 456 flow [2022-11-20 12:30:25,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:30:25,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 12:30:25,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 885 transitions. [2022-11-20 12:30:25,437 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8634146341463415 [2022-11-20 12:30:25,438 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 885 transitions. [2022-11-20 12:30:25,438 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 885 transitions. [2022-11-20 12:30:25,439 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:30:25,439 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 885 transitions. [2022-11-20 12:30:25,442 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 177.0) internal successors, (885), 5 states have internal predecessors, (885), 0 states have call successors, (0), 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 12:30:25,445 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 205.0) internal successors, (1230), 6 states have internal predecessors, (1230), 0 states have call successors, (0), 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 12:30:25,446 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 205.0) internal successors, (1230), 6 states have internal predecessors, (1230), 0 states have call successors, (0), 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 12:30:25,446 INFO L175 Difference]: Start difference. First operand has 186 places, 205 transitions, 440 flow. Second operand 5 states and 885 transitions. [2022-11-20 12:30:25,446 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 188 transitions, 456 flow [2022-11-20 12:30:25,448 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 188 transitions, 456 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 12:30:25,452 INFO L231 Difference]: Finished difference. Result has 192 places, 184 transitions, 424 flow [2022-11-20 12:30:25,454 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=392, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=424, PETRI_PLACES=192, PETRI_TRANSITIONS=184} [2022-11-20 12:30:25,455 INFO L288 CegarLoopForPetriNet]: 186 programPoint places, 6 predicate places. [2022-11-20 12:30:25,456 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 184 transitions, 424 flow [2022-11-20 12:30:25,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 164.75) internal successors, (659), 4 states have internal predecessors, (659), 0 states have call successors, (0), 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 12:30:25,456 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:30:25,457 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 12:30:25,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-20 12:30:25,457 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 12:30:25,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:30:25,458 INFO L85 PathProgramCache]: Analyzing trace with hash 738651501, now seen corresponding path program 1 times [2022-11-20 12:30:25,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:30:25,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140623372] [2022-11-20 12:30:25,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:30:25,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:30:25,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:30:25,545 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 12:30:25,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:30:25,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140623372] [2022-11-20 12:30:25,546 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140623372] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:30:25,546 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:30:25,547 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:30:25,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24641433] [2022-11-20 12:30:25,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:30:25,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:30:25,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:30:25,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:30:25,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:30:25,550 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 205 [2022-11-20 12:30:25,551 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 184 transitions, 424 flow. Second operand has 4 states, 4 states have (on average 157.0) internal successors, (628), 4 states have internal predecessors, (628), 0 states have call successors, (0), 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 12:30:25,551 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:30:25,551 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 205 [2022-11-20 12:30:25,551 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:30:27,320 INFO L130 PetriNetUnfolder]: 1858/7910 cut-off events. [2022-11-20 12:30:27,320 INFO L131 PetriNetUnfolder]: For 1087/1087 co-relation queries the response was YES. [2022-11-20 12:30:27,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11269 conditions, 7910 events. 1858/7910 cut-off events. For 1087/1087 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 86541 event pairs, 654 based on Foata normal form. 0/6976 useless extension candidates. Maximal degree in co-relation 11199. Up to 1995 conditions per place. [2022-11-20 12:30:27,417 INFO L137 encePairwiseOnDemand]: 197/205 looper letters, 52 selfloop transitions, 8 changer transitions 0/219 dead transitions. [2022-11-20 12:30:27,418 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 219 transitions, 656 flow [2022-11-20 12:30:27,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:30:27,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 12:30:27,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 844 transitions. [2022-11-20 12:30:27,421 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8234146341463414 [2022-11-20 12:30:27,422 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 844 transitions. [2022-11-20 12:30:27,422 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 844 transitions. [2022-11-20 12:30:27,423 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:30:27,423 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 844 transitions. [2022-11-20 12:30:27,431 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 168.8) internal successors, (844), 5 states have internal predecessors, (844), 0 states have call successors, (0), 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 12:30:27,437 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 205.0) internal successors, (1230), 6 states have internal predecessors, (1230), 0 states have call successors, (0), 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 12:30:27,437 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 205.0) internal successors, (1230), 6 states have internal predecessors, (1230), 0 states have call successors, (0), 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 12:30:27,438 INFO L175 Difference]: Start difference. First operand has 192 places, 184 transitions, 424 flow. Second operand 5 states and 844 transitions. [2022-11-20 12:30:27,438 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 219 transitions, 656 flow [2022-11-20 12:30:27,442 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 219 transitions, 654 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 12:30:27,448 INFO L231 Difference]: Finished difference. Result has 198 places, 191 transitions, 486 flow [2022-11-20 12:30:27,448 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=422, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=486, PETRI_PLACES=198, PETRI_TRANSITIONS=191} [2022-11-20 12:30:27,451 INFO L288 CegarLoopForPetriNet]: 186 programPoint places, 12 predicate places. [2022-11-20 12:30:27,451 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 191 transitions, 486 flow [2022-11-20 12:30:27,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 157.0) internal successors, (628), 4 states have internal predecessors, (628), 0 states have call successors, (0), 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 12:30:27,452 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:30:27,453 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:30:27,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-20 12:30:27,453 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 12:30:27,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:30:27,454 INFO L85 PathProgramCache]: Analyzing trace with hash 1116141652, now seen corresponding path program 1 times [2022-11-20 12:30:27,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:30:27,457 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149265000] [2022-11-20 12:30:27,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:30:27,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:30:27,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:30:27,533 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 12:30:27,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:30:27,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149265000] [2022-11-20 12:30:27,534 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149265000] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:30:27,534 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:30:27,535 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:30:27,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721795411] [2022-11-20 12:30:27,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:30:27,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:30:27,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:30:27,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:30:27,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:30:27,538 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 205 [2022-11-20 12:30:27,539 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 191 transitions, 486 flow. Second operand has 4 states, 4 states have (on average 166.75) internal successors, (667), 4 states have internal predecessors, (667), 0 states have call successors, (0), 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 12:30:27,539 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:30:27,539 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 205 [2022-11-20 12:30:27,539 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:30:27,773 INFO L130 PetriNetUnfolder]: 37/864 cut-off events. [2022-11-20 12:30:27,774 INFO L131 PetriNetUnfolder]: For 346/858 co-relation queries the response was YES. [2022-11-20 12:30:27,785 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1097 conditions, 864 events. 37/864 cut-off events. For 346/858 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 5172 event pairs, 7 based on Foata normal form. 41/794 useless extension candidates. Maximal degree in co-relation 774. Up to 52 conditions per place. [2022-11-20 12:30:27,790 INFO L137 encePairwiseOnDemand]: 199/205 looper letters, 13 selfloop transitions, 8 changer transitions 0/191 dead transitions. [2022-11-20 12:30:27,790 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 191 transitions, 526 flow [2022-11-20 12:30:27,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:30:27,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 12:30:27,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 834 transitions. [2022-11-20 12:30:27,907 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8136585365853658 [2022-11-20 12:30:27,907 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 834 transitions. [2022-11-20 12:30:27,907 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 834 transitions. [2022-11-20 12:30:27,908 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:30:27,908 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 834 transitions. [2022-11-20 12:30:27,911 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 166.8) internal successors, (834), 5 states have internal predecessors, (834), 0 states have call successors, (0), 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 12:30:27,915 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 205.0) internal successors, (1230), 6 states have internal predecessors, (1230), 0 states have call successors, (0), 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 12:30:27,916 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 205.0) internal successors, (1230), 6 states have internal predecessors, (1230), 0 states have call successors, (0), 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 12:30:27,916 INFO L175 Difference]: Start difference. First operand has 198 places, 191 transitions, 486 flow. Second operand 5 states and 834 transitions. [2022-11-20 12:30:27,916 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 191 transitions, 526 flow [2022-11-20 12:30:27,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 191 transitions, 522 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 12:30:27,923 INFO L231 Difference]: Finished difference. Result has 201 places, 191 transitions, 502 flow [2022-11-20 12:30:27,923 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=478, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=502, PETRI_PLACES=201, PETRI_TRANSITIONS=191} [2022-11-20 12:30:27,925 INFO L288 CegarLoopForPetriNet]: 186 programPoint places, 15 predicate places. [2022-11-20 12:30:27,925 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 191 transitions, 502 flow [2022-11-20 12:30:27,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 166.75) internal successors, (667), 4 states have internal predecessors, (667), 0 states have call successors, (0), 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 12:30:27,926 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:30:27,927 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:30:27,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-20 12:30:27,927 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 12:30:27,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:30:27,928 INFO L85 PathProgramCache]: Analyzing trace with hash 240653496, now seen corresponding path program 1 times [2022-11-20 12:30:27,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:30:27,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122680522] [2022-11-20 12:30:27,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:30:27,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:30:27,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:30:28,052 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 12:30:28,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:30:28,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122680522] [2022-11-20 12:30:28,053 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122680522] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:30:28,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1789298714] [2022-11-20 12:30:28,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:30:28,054 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:30:28,054 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8811a62-fe58-4b26-b824-81ded63f6ee2/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:30:28,056 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8811a62-fe58-4b26-b824-81ded63f6ee2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:30:28,078 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8811a62-fe58-4b26-b824-81ded63f6ee2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 12:30:28,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:30:28,179 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 12:30:28,184 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:30:28,276 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 12:30:28,277 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:30:28,277 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1789298714] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:30:28,277 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:30:28,278 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-20 12:30:28,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861639125] [2022-11-20 12:30:28,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:30:28,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:30:28,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:30:28,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:30:28,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:30:28,285 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 205 [2022-11-20 12:30:28,287 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 191 transitions, 502 flow. Second operand has 6 states, 6 states have (on average 165.66666666666666) internal successors, (994), 6 states have internal predecessors, (994), 0 states have call successors, (0), 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 12:30:28,288 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:30:28,288 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 205 [2022-11-20 12:30:28,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:30:28,616 INFO L130 PetriNetUnfolder]: 37/862 cut-off events. [2022-11-20 12:30:28,616 INFO L131 PetriNetUnfolder]: For 343/808 co-relation queries the response was YES. [2022-11-20 12:30:28,627 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1106 conditions, 862 events. 37/862 cut-off events. For 343/808 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 5153 event pairs, 7 based on Foata normal form. 18/769 useless extension candidates. Maximal degree in co-relation 774. Up to 58 conditions per place. [2022-11-20 12:30:28,633 INFO L137 encePairwiseOnDemand]: 200/205 looper letters, 17 selfloop transitions, 6 changer transitions 0/193 dead transitions. [2022-11-20 12:30:28,633 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 193 transitions, 550 flow [2022-11-20 12:30:28,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 12:30:28,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 12:30:28,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1165 transitions. [2022-11-20 12:30:28,638 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8118466898954704 [2022-11-20 12:30:28,638 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1165 transitions. [2022-11-20 12:30:28,638 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1165 transitions. [2022-11-20 12:30:28,640 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:30:28,640 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1165 transitions. [2022-11-20 12:30:28,644 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 166.42857142857142) internal successors, (1165), 7 states have internal predecessors, (1165), 0 states have call successors, (0), 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 12:30:28,649 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 205.0) internal successors, (1640), 8 states have internal predecessors, (1640), 0 states have call successors, (0), 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 12:30:28,650 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 205.0) internal successors, (1640), 8 states have internal predecessors, (1640), 0 states have call successors, (0), 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 12:30:28,650 INFO L175 Difference]: Start difference. First operand has 201 places, 191 transitions, 502 flow. Second operand 7 states and 1165 transitions. [2022-11-20 12:30:28,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 193 transitions, 550 flow [2022-11-20 12:30:28,654 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 193 transitions, 538 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 12:30:28,659 INFO L231 Difference]: Finished difference. Result has 203 places, 190 transitions, 498 flow [2022-11-20 12:30:28,659 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=486, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=498, PETRI_PLACES=203, PETRI_TRANSITIONS=190} [2022-11-20 12:30:28,661 INFO L288 CegarLoopForPetriNet]: 186 programPoint places, 17 predicate places. [2022-11-20 12:30:28,661 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 190 transitions, 498 flow [2022-11-20 12:30:28,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 165.66666666666666) internal successors, (994), 6 states have internal predecessors, (994), 0 states have call successors, (0), 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 12:30:28,662 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:30:28,663 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:30:28,675 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8811a62-fe58-4b26-b824-81ded63f6ee2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 12:30:28,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8811a62-fe58-4b26-b824-81ded63f6ee2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:30:28,870 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 12:30:28,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:30:28,870 INFO L85 PathProgramCache]: Analyzing trace with hash 1151505733, now seen corresponding path program 1 times [2022-11-20 12:30:28,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:30:28,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460281555] [2022-11-20 12:30:28,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:30:28,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:30:28,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:30:29,007 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 12:30:29,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:30:29,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460281555] [2022-11-20 12:30:29,008 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460281555] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:30:29,008 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:30:29,009 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:30:29,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366392825] [2022-11-20 12:30:29,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:30:29,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:30:29,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:30:29,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:30:29,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:30:29,017 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 205 [2022-11-20 12:30:29,019 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 190 transitions, 498 flow. Second operand has 6 states, 6 states have (on average 152.5) internal successors, (915), 6 states have internal predecessors, (915), 0 states have call successors, (0), 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 12:30:29,020 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:30:29,020 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 205 [2022-11-20 12:30:29,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:30:32,604 INFO L130 PetriNetUnfolder]: 4005/14181 cut-off events. [2022-11-20 12:30:32,604 INFO L131 PetriNetUnfolder]: For 4205/4229 co-relation queries the response was YES. [2022-11-20 12:30:32,710 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23204 conditions, 14181 events. 4005/14181 cut-off events. For 4205/4229 co-relation queries the response was YES. Maximal size of possible extension queue 591. Compared 166969 event pairs, 1085 based on Foata normal form. 18/12522 useless extension candidates. Maximal degree in co-relation 14373. Up to 2727 conditions per place. [2022-11-20 12:30:32,804 INFO L137 encePairwiseOnDemand]: 192/205 looper letters, 100 selfloop transitions, 27 changer transitions 0/280 dead transitions. [2022-11-20 12:30:32,804 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 280 transitions, 1078 flow [2022-11-20 12:30:32,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 12:30:32,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-20 12:30:32,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1488 transitions. [2022-11-20 12:30:32,809 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8065040650406504 [2022-11-20 12:30:32,809 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1488 transitions. [2022-11-20 12:30:32,809 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1488 transitions. [2022-11-20 12:30:32,811 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:30:32,811 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1488 transitions. [2022-11-20 12:30:32,815 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 165.33333333333334) internal successors, (1488), 9 states have internal predecessors, (1488), 0 states have call successors, (0), 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 12:30:32,820 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 205.0) internal successors, (2050), 10 states have internal predecessors, (2050), 0 states have call successors, (0), 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 12:30:32,821 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 205.0) internal successors, (2050), 10 states have internal predecessors, (2050), 0 states have call successors, (0), 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 12:30:32,822 INFO L175 Difference]: Start difference. First operand has 203 places, 190 transitions, 498 flow. Second operand 9 states and 1488 transitions. [2022-11-20 12:30:32,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 280 transitions, 1078 flow [2022-11-20 12:30:32,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 280 transitions, 1067 flow, removed 1 selfloop flow, removed 5 redundant places. [2022-11-20 12:30:32,835 INFO L231 Difference]: Finished difference. Result has 212 places, 209 transitions, 691 flow [2022-11-20 12:30:32,836 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=487, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=691, PETRI_PLACES=212, PETRI_TRANSITIONS=209} [2022-11-20 12:30:32,836 INFO L288 CegarLoopForPetriNet]: 186 programPoint places, 26 predicate places. [2022-11-20 12:30:32,836 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 209 transitions, 691 flow [2022-11-20 12:30:32,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 152.5) internal successors, (915), 6 states have internal predecessors, (915), 0 states have call successors, (0), 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 12:30:32,837 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:30:32,838 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:30:32,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-20 12:30:32,838 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 12:30:32,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:30:32,839 INFO L85 PathProgramCache]: Analyzing trace with hash 1336940165, now seen corresponding path program 1 times [2022-11-20 12:30:32,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:30:32,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379526449] [2022-11-20 12:30:32,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:30:32,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:30:32,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:30:32,936 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 12:30:32,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:30:32,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379526449] [2022-11-20 12:30:32,937 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379526449] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:30:32,937 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:30:32,937 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:30:32,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632959615] [2022-11-20 12:30:32,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:30:32,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:30:32,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:30:32,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:30:32,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:30:32,940 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 205 [2022-11-20 12:30:32,941 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 209 transitions, 691 flow. Second operand has 6 states, 6 states have (on average 152.66666666666666) internal successors, (916), 6 states have internal predecessors, (916), 0 states have call successors, (0), 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 12:30:32,942 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:30:32,942 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 205 [2022-11-20 12:30:32,942 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:30:35,908 INFO L130 PetriNetUnfolder]: 3800/13598 cut-off events. [2022-11-20 12:30:35,908 INFO L131 PetriNetUnfolder]: For 13001/13292 co-relation queries the response was YES. [2022-11-20 12:30:35,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27325 conditions, 13598 events. 3800/13598 cut-off events. For 13001/13292 co-relation queries the response was YES. Maximal size of possible extension queue 574. Compared 159999 event pairs, 1165 based on Foata normal form. 302/12501 useless extension candidates. Maximal degree in co-relation 18742. Up to 2976 conditions per place. [2022-11-20 12:30:36,091 INFO L137 encePairwiseOnDemand]: 192/205 looper letters, 107 selfloop transitions, 27 changer transitions 0/287 dead transitions. [2022-11-20 12:30:36,092 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 287 transitions, 1336 flow [2022-11-20 12:30:36,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 12:30:36,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-20 12:30:36,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1486 transitions. [2022-11-20 12:30:36,097 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.805420054200542 [2022-11-20 12:30:36,097 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1486 transitions. [2022-11-20 12:30:36,097 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1486 transitions. [2022-11-20 12:30:36,099 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:30:36,099 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1486 transitions. [2022-11-20 12:30:36,104 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 165.11111111111111) internal successors, (1486), 9 states have internal predecessors, (1486), 0 states have call successors, (0), 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 12:30:36,108 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 205.0) internal successors, (2050), 10 states have internal predecessors, (2050), 0 states have call successors, (0), 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 12:30:36,109 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 205.0) internal successors, (2050), 10 states have internal predecessors, (2050), 0 states have call successors, (0), 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 12:30:36,109 INFO L175 Difference]: Start difference. First operand has 212 places, 209 transitions, 691 flow. Second operand 9 states and 1486 transitions. [2022-11-20 12:30:36,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 287 transitions, 1336 flow [2022-11-20 12:30:36,165 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 287 transitions, 1269 flow, removed 20 selfloop flow, removed 4 redundant places. [2022-11-20 12:30:36,170 INFO L231 Difference]: Finished difference. Result has 218 places, 217 transitions, 772 flow [2022-11-20 12:30:36,170 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=640, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=772, PETRI_PLACES=218, PETRI_TRANSITIONS=217} [2022-11-20 12:30:36,171 INFO L288 CegarLoopForPetriNet]: 186 programPoint places, 32 predicate places. [2022-11-20 12:30:36,171 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 217 transitions, 772 flow [2022-11-20 12:30:36,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 152.66666666666666) internal successors, (916), 6 states have internal predecessors, (916), 0 states have call successors, (0), 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 12:30:36,173 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:30:36,173 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 12:30:36,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-20 12:30:36,174 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 12:30:36,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:30:36,174 INFO L85 PathProgramCache]: Analyzing trace with hash 913572471, now seen corresponding path program 1 times [2022-11-20 12:30:36,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:30:36,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722749565] [2022-11-20 12:30:36,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:30:36,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:30:36,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:30:36,251 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 12:30:36,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:30:36,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722749565] [2022-11-20 12:30:36,252 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722749565] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:30:36,252 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:30:36,253 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:30:36,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241906709] [2022-11-20 12:30:36,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:30:36,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:30:36,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:30:36,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:30:36,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:30:36,255 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 205 [2022-11-20 12:30:36,256 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 217 transitions, 772 flow. Second operand has 4 states, 4 states have (on average 157.25) internal successors, (629), 4 states have internal predecessors, (629), 0 states have call successors, (0), 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 12:30:36,257 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:30:36,257 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 205 [2022-11-20 12:30:36,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:30:39,620 INFO L130 PetriNetUnfolder]: 4383/19243 cut-off events. [2022-11-20 12:30:39,620 INFO L131 PetriNetUnfolder]: For 17547/17951 co-relation queries the response was YES. [2022-11-20 12:30:39,755 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36980 conditions, 19243 events. 4383/19243 cut-off events. For 17547/17951 co-relation queries the response was YES. Maximal size of possible extension queue 795. Compared 248923 event pairs, 2408 based on Foata normal form. 212/17271 useless extension candidates. Maximal degree in co-relation 26223. Up to 4794 conditions per place. [2022-11-20 12:30:39,885 INFO L137 encePairwiseOnDemand]: 197/205 looper letters, 93 selfloop transitions, 11 changer transitions 0/266 dead transitions. [2022-11-20 12:30:39,885 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 266 transitions, 1288 flow [2022-11-20 12:30:39,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:30:39,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 12:30:39,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 842 transitions. [2022-11-20 12:30:39,889 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8214634146341463 [2022-11-20 12:30:39,889 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 842 transitions. [2022-11-20 12:30:39,889 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 842 transitions. [2022-11-20 12:30:39,890 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:30:39,890 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 842 transitions. [2022-11-20 12:30:39,893 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 168.4) internal successors, (842), 5 states have internal predecessors, (842), 0 states have call successors, (0), 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 12:30:39,895 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 205.0) internal successors, (1230), 6 states have internal predecessors, (1230), 0 states have call successors, (0), 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 12:30:39,896 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 205.0) internal successors, (1230), 6 states have internal predecessors, (1230), 0 states have call successors, (0), 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 12:30:39,896 INFO L175 Difference]: Start difference. First operand has 218 places, 217 transitions, 772 flow. Second operand 5 states and 842 transitions. [2022-11-20 12:30:39,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 266 transitions, 1288 flow [2022-11-20 12:30:40,164 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 266 transitions, 1246 flow, removed 2 selfloop flow, removed 4 redundant places. [2022-11-20 12:30:40,168 INFO L231 Difference]: Finished difference. Result has 221 places, 222 transitions, 822 flow [2022-11-20 12:30:40,169 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=747, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=822, PETRI_PLACES=221, PETRI_TRANSITIONS=222} [2022-11-20 12:30:40,169 INFO L288 CegarLoopForPetriNet]: 186 programPoint places, 35 predicate places. [2022-11-20 12:30:40,170 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 222 transitions, 822 flow [2022-11-20 12:30:40,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 157.25) internal successors, (629), 4 states have internal predecessors, (629), 0 states have call successors, (0), 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 12:30:40,171 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:30:40,171 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:30:40,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-20 12:30:40,172 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 12:30:40,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:30:40,173 INFO L85 PathProgramCache]: Analyzing trace with hash -340676813, now seen corresponding path program 1 times [2022-11-20 12:30:40,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:30:40,173 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652336722] [2022-11-20 12:30:40,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:30:40,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:30:40,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:30:40,342 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 12:30:40,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:30:40,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652336722] [2022-11-20 12:30:40,343 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652336722] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:30:40,343 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:30:40,344 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:30:40,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306670999] [2022-11-20 12:30:40,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:30:40,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:30:40,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:30:40,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:30:40,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:30:40,348 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 205 [2022-11-20 12:30:40,350 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 222 transitions, 822 flow. Second operand has 6 states, 6 states have (on average 152.66666666666666) internal successors, (916), 6 states have internal predecessors, (916), 0 states have call successors, (0), 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 12:30:40,350 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:30:40,350 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 205 [2022-11-20 12:30:40,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:30:46,300 INFO L130 PetriNetUnfolder]: 9304/34670 cut-off events. [2022-11-20 12:30:46,300 INFO L131 PetriNetUnfolder]: For 32289/33348 co-relation queries the response was YES. [2022-11-20 12:30:46,585 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70603 conditions, 34670 events. 9304/34670 cut-off events. For 32289/33348 co-relation queries the response was YES. Maximal size of possible extension queue 1589. Compared 483078 event pairs, 2312 based on Foata normal form. 419/31827 useless extension candidates. Maximal degree in co-relation 48793. Up to 7057 conditions per place. [2022-11-20 12:30:46,781 INFO L137 encePairwiseOnDemand]: 192/205 looper letters, 149 selfloop transitions, 46 changer transitions 0/352 dead transitions. [2022-11-20 12:30:46,781 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 352 transitions, 1968 flow [2022-11-20 12:30:46,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 12:30:46,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-20 12:30:46,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1485 transitions. [2022-11-20 12:30:46,787 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8048780487804879 [2022-11-20 12:30:46,787 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1485 transitions. [2022-11-20 12:30:46,788 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1485 transitions. [2022-11-20 12:30:46,789 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:30:46,789 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1485 transitions. [2022-11-20 12:30:46,793 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 165.0) internal successors, (1485), 9 states have internal predecessors, (1485), 0 states have call successors, (0), 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 12:30:46,797 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 205.0) internal successors, (2050), 10 states have internal predecessors, (2050), 0 states have call successors, (0), 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 12:30:46,798 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 205.0) internal successors, (2050), 10 states have internal predecessors, (2050), 0 states have call successors, (0), 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 12:30:46,798 INFO L175 Difference]: Start difference. First operand has 221 places, 222 transitions, 822 flow. Second operand 9 states and 1485 transitions. [2022-11-20 12:30:46,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 352 transitions, 1968 flow [2022-11-20 12:30:47,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 352 transitions, 1962 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 12:30:47,059 INFO L231 Difference]: Finished difference. Result has 234 places, 257 transitions, 1306 flow [2022-11-20 12:30:47,059 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=817, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1306, PETRI_PLACES=234, PETRI_TRANSITIONS=257} [2022-11-20 12:30:47,060 INFO L288 CegarLoopForPetriNet]: 186 programPoint places, 48 predicate places. [2022-11-20 12:30:47,061 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 257 transitions, 1306 flow [2022-11-20 12:30:47,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 152.66666666666666) internal successors, (916), 6 states have internal predecessors, (916), 0 states have call successors, (0), 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 12:30:47,062 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:30:47,062 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:30:47,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-20 12:30:47,062 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 12:30:47,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:30:47,064 INFO L85 PathProgramCache]: Analyzing trace with hash 1471531973, now seen corresponding path program 1 times [2022-11-20 12:30:47,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:30:47,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239375668] [2022-11-20 12:30:47,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:30:47,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:30:47,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:30:47,486 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 12:30:47,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:30:47,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239375668] [2022-11-20 12:30:47,487 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239375668] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:30:47,487 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:30:47,487 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 12:30:47,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337330802] [2022-11-20 12:30:47,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:30:47,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:30:47,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:30:47,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:30:47,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:30:47,490 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 205 [2022-11-20 12:30:47,491 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 257 transitions, 1306 flow. Second operand has 6 states, 6 states have (on average 144.0) internal successors, (864), 6 states have internal predecessors, (864), 0 states have call successors, (0), 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 12:30:47,491 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:30:47,491 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 205 [2022-11-20 12:30:47,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:30:48,105 INFO L130 PetriNetUnfolder]: 179/2845 cut-off events. [2022-11-20 12:30:48,105 INFO L131 PetriNetUnfolder]: For 1510/1513 co-relation queries the response was YES. [2022-11-20 12:30:48,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4433 conditions, 2845 events. 179/2845 cut-off events. For 1510/1513 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 23956 event pairs, 83 based on Foata normal form. 303/2868 useless extension candidates. Maximal degree in co-relation 4112. Up to 418 conditions per place. [2022-11-20 12:30:48,129 INFO L137 encePairwiseOnDemand]: 195/205 looper letters, 35 selfloop transitions, 10 changer transitions 1/205 dead transitions. [2022-11-20 12:30:48,130 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 205 transitions, 822 flow [2022-11-20 12:30:48,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:30:48,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 12:30:48,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 754 transitions. [2022-11-20 12:30:48,132 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.735609756097561 [2022-11-20 12:30:48,132 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 754 transitions. [2022-11-20 12:30:48,132 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 754 transitions. [2022-11-20 12:30:48,133 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:30:48,133 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 754 transitions. [2022-11-20 12:30:48,134 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 150.8) internal successors, (754), 5 states have internal predecessors, (754), 0 states have call successors, (0), 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 12:30:48,136 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 205.0) internal successors, (1230), 6 states have internal predecessors, (1230), 0 states have call successors, (0), 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 12:30:48,137 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 205.0) internal successors, (1230), 6 states have internal predecessors, (1230), 0 states have call successors, (0), 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 12:30:48,137 INFO L175 Difference]: Start difference. First operand has 234 places, 257 transitions, 1306 flow. Second operand 5 states and 754 transitions. [2022-11-20 12:30:48,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 205 transitions, 822 flow [2022-11-20 12:30:48,147 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 205 transitions, 726 flow, removed 40 selfloop flow, removed 10 redundant places. [2022-11-20 12:30:48,150 INFO L231 Difference]: Finished difference. Result has 226 places, 199 transitions, 623 flow [2022-11-20 12:30:48,151 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=605, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=623, PETRI_PLACES=226, PETRI_TRANSITIONS=199} [2022-11-20 12:30:48,151 INFO L288 CegarLoopForPetriNet]: 186 programPoint places, 40 predicate places. [2022-11-20 12:30:48,151 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 199 transitions, 623 flow [2022-11-20 12:30:48,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 144.0) internal successors, (864), 6 states have internal predecessors, (864), 0 states have call successors, (0), 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 12:30:48,152 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:30:48,152 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:30:48,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-20 12:30:48,153 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 12:30:48,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:30:48,153 INFO L85 PathProgramCache]: Analyzing trace with hash -1971045873, now seen corresponding path program 1 times [2022-11-20 12:30:48,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:30:48,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82541743] [2022-11-20 12:30:48,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:30:48,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:30:48,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:30:48,256 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 12:30:48,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:30:48,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82541743] [2022-11-20 12:30:48,257 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82541743] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:30:48,257 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:30:48,258 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:30:48,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218153843] [2022-11-20 12:30:48,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:30:48,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:30:48,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:30:48,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:30:48,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:30:48,261 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 205 [2022-11-20 12:30:48,262 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 199 transitions, 623 flow. Second operand has 6 states, 6 states have (on average 152.83333333333334) internal successors, (917), 6 states have internal predecessors, (917), 0 states have call successors, (0), 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 12:30:48,262 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:30:48,262 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 205 [2022-11-20 12:30:48,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:30:49,072 INFO L130 PetriNetUnfolder]: 221/3345 cut-off events. [2022-11-20 12:30:49,073 INFO L131 PetriNetUnfolder]: For 1193/1208 co-relation queries the response was YES. [2022-11-20 12:30:49,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4880 conditions, 3345 events. 221/3345 cut-off events. For 1193/1208 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 30172 event pairs, 127 based on Foata normal form. 4/2986 useless extension candidates. Maximal degree in co-relation 3659. Up to 504 conditions per place. [2022-11-20 12:30:49,094 INFO L137 encePairwiseOnDemand]: 194/205 looper letters, 50 selfloop transitions, 10 changer transitions 0/214 dead transitions. [2022-11-20 12:30:49,095 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 214 transitions, 824 flow [2022-11-20 12:30:49,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 12:30:49,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-20 12:30:49,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1263 transitions. [2022-11-20 12:30:49,098 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7701219512195122 [2022-11-20 12:30:49,098 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1263 transitions. [2022-11-20 12:30:49,099 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1263 transitions. [2022-11-20 12:30:49,100 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:30:49,100 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1263 transitions. [2022-11-20 12:30:49,103 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 157.875) internal successors, (1263), 8 states have internal predecessors, (1263), 0 states have call successors, (0), 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 12:30:49,106 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 205.0) internal successors, (1845), 9 states have internal predecessors, (1845), 0 states have call successors, (0), 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 12:30:49,107 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 205.0) internal successors, (1845), 9 states have internal predecessors, (1845), 0 states have call successors, (0), 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 12:30:49,107 INFO L175 Difference]: Start difference. First operand has 226 places, 199 transitions, 623 flow. Second operand 8 states and 1263 transitions. [2022-11-20 12:30:49,108 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 214 transitions, 824 flow [2022-11-20 12:30:49,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 214 transitions, 803 flow, removed 1 selfloop flow, removed 5 redundant places. [2022-11-20 12:30:49,116 INFO L231 Difference]: Finished difference. Result has 228 places, 199 transitions, 624 flow [2022-11-20 12:30:49,116 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=598, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=624, PETRI_PLACES=228, PETRI_TRANSITIONS=199} [2022-11-20 12:30:49,117 INFO L288 CegarLoopForPetriNet]: 186 programPoint places, 42 predicate places. [2022-11-20 12:30:49,117 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 199 transitions, 624 flow [2022-11-20 12:30:49,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 152.83333333333334) internal successors, (917), 6 states have internal predecessors, (917), 0 states have call successors, (0), 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 12:30:49,118 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:30:49,118 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:30:49,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-20 12:30:49,119 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 12:30:49,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:30:49,119 INFO L85 PathProgramCache]: Analyzing trace with hash 1040596354, now seen corresponding path program 1 times [2022-11-20 12:30:49,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:30:49,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417349963] [2022-11-20 12:30:49,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:30:49,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:30:49,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:30:49,221 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 12:30:49,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:30:49,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417349963] [2022-11-20 12:30:49,222 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417349963] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:30:49,222 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:30:49,222 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:30:49,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542826785] [2022-11-20 12:30:49,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:30:49,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:30:49,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:30:49,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:30:49,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:30:49,225 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 205 [2022-11-20 12:30:49,226 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 199 transitions, 624 flow. Second operand has 4 states, 4 states have (on average 157.5) internal successors, (630), 4 states have internal predecessors, (630), 0 states have call successors, (0), 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 12:30:49,226 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:30:49,226 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 205 [2022-11-20 12:30:49,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:30:49,803 INFO L130 PetriNetUnfolder]: 165/2734 cut-off events. [2022-11-20 12:30:49,804 INFO L131 PetriNetUnfolder]: For 984/999 co-relation queries the response was YES. [2022-11-20 12:30:49,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3973 conditions, 2734 events. 165/2734 cut-off events. For 984/999 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 23014 event pairs, 106 based on Foata normal form. 0/2454 useless extension candidates. Maximal degree in co-relation 2868. Up to 407 conditions per place. [2022-11-20 12:30:49,830 INFO L137 encePairwiseOnDemand]: 197/205 looper letters, 39 selfloop transitions, 6 changer transitions 0/206 dead transitions. [2022-11-20 12:30:49,830 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 206 transitions, 740 flow [2022-11-20 12:30:49,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:30:49,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 12:30:49,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 819 transitions. [2022-11-20 12:30:49,833 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7990243902439025 [2022-11-20 12:30:49,834 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 819 transitions. [2022-11-20 12:30:49,834 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 819 transitions. [2022-11-20 12:30:49,834 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:30:49,835 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 819 transitions. [2022-11-20 12:30:49,837 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 163.8) internal successors, (819), 5 states have internal predecessors, (819), 0 states have call successors, (0), 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 12:30:49,839 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 205.0) internal successors, (1230), 6 states have internal predecessors, (1230), 0 states have call successors, (0), 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 12:30:49,840 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 205.0) internal successors, (1230), 6 states have internal predecessors, (1230), 0 states have call successors, (0), 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 12:30:49,840 INFO L175 Difference]: Start difference. First operand has 228 places, 199 transitions, 624 flow. Second operand 5 states and 819 transitions. [2022-11-20 12:30:49,840 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 206 transitions, 740 flow [2022-11-20 12:30:49,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 206 transitions, 728 flow, removed 1 selfloop flow, removed 4 redundant places. [2022-11-20 12:30:49,849 INFO L231 Difference]: Finished difference. Result has 231 places, 201 transitions, 644 flow [2022-11-20 12:30:49,850 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=612, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=644, PETRI_PLACES=231, PETRI_TRANSITIONS=201} [2022-11-20 12:30:49,850 INFO L288 CegarLoopForPetriNet]: 186 programPoint places, 45 predicate places. [2022-11-20 12:30:49,851 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 201 transitions, 644 flow [2022-11-20 12:30:49,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 157.5) internal successors, (630), 4 states have internal predecessors, (630), 0 states have call successors, (0), 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 12:30:49,851 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:30:49,854 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:30:49,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-20 12:30:49,854 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 12:30:49,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:30:49,855 INFO L85 PathProgramCache]: Analyzing trace with hash 883679648, now seen corresponding path program 1 times [2022-11-20 12:30:49,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:30:49,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925988608] [2022-11-20 12:30:49,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:30:49,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:30:49,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:30:49,879 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 12:30:49,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:30:49,926 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 12:30:49,926 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-20 12:30:49,927 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 21 remaining) [2022-11-20 12:30:49,927 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 21 remaining) [2022-11-20 12:30:49,927 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 21 remaining) [2022-11-20 12:30:49,928 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 21 remaining) [2022-11-20 12:30:49,928 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 21 remaining) [2022-11-20 12:30:49,928 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 21 remaining) [2022-11-20 12:30:49,928 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 21 remaining) [2022-11-20 12:30:49,929 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 21 remaining) [2022-11-20 12:30:49,929 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 21 remaining) [2022-11-20 12:30:49,929 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 21 remaining) [2022-11-20 12:30:49,930 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 21 remaining) [2022-11-20 12:30:49,930 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 21 remaining) [2022-11-20 12:30:49,930 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 21 remaining) [2022-11-20 12:30:49,930 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 21 remaining) [2022-11-20 12:30:49,931 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 21 remaining) [2022-11-20 12:30:49,931 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 21 remaining) [2022-11-20 12:30:49,931 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 21 remaining) [2022-11-20 12:30:49,931 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 21 remaining) [2022-11-20 12:30:49,932 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 21 remaining) [2022-11-20 12:30:49,932 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 21 remaining) [2022-11-20 12:30:49,932 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 21 remaining) [2022-11-20 12:30:49,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-20 12:30:49,933 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:30:49,937 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-20 12:30:49,937 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-11-20 12:30:49,980 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-11-20 12:30:49,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 219 places, 243 transitions, 530 flow [2022-11-20 12:30:50,124 INFO L130 PetriNetUnfolder]: 81/660 cut-off events. [2022-11-20 12:30:50,125 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2022-11-20 12:30:50,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 715 conditions, 660 events. 81/660 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 2533 event pairs, 6 based on Foata normal form. 0/525 useless extension candidates. Maximal degree in co-relation 445. Up to 32 conditions per place. [2022-11-20 12:30:50,134 INFO L82 GeneralOperation]: Start removeDead. Operand has 219 places, 243 transitions, 530 flow [2022-11-20 12:30:50,142 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 219 places, 243 transitions, 530 flow [2022-11-20 12:30:50,143 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 12:30:50,143 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;@360a60f6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 12:30:50,143 INFO L358 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2022-11-20 12:30:50,150 INFO L130 PetriNetUnfolder]: 2/68 cut-off events. [2022-11-20 12:30:50,150 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 12:30:50,150 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:30:50,151 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] [2022-11-20 12:30:50,151 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 12:30:50,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:30:50,152 INFO L85 PathProgramCache]: Analyzing trace with hash -219559231, now seen corresponding path program 1 times [2022-11-20 12:30:50,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:30:50,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293426595] [2022-11-20 12:30:50,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:30:50,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:30:50,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:30:50,213 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 12:30:50,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:30:50,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293426595] [2022-11-20 12:30:50,214 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293426595] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:30:50,214 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:30:50,214 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:30:50,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370223830] [2022-11-20 12:30:50,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:30:50,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:30:50,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:30:50,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:30:50,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:30:50,217 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 193 out of 243 [2022-11-20 12:30:50,219 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 243 transitions, 530 flow. Second operand has 4 states, 4 states have (on average 194.75) internal successors, (779), 4 states have internal predecessors, (779), 0 states have call successors, (0), 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 12:30:50,219 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:30:50,219 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 193 of 243 [2022-11-20 12:30:50,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:30:50,430 INFO L130 PetriNetUnfolder]: 20/577 cut-off events. [2022-11-20 12:30:50,430 INFO L131 PetriNetUnfolder]: For 145/277 co-relation queries the response was YES. [2022-11-20 12:30:50,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 711 conditions, 577 events. 20/577 cut-off events. For 145/277 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 2331 event pairs, 6 based on Foata normal form. 628/1129 useless extension candidates. Maximal degree in co-relation 429. Up to 71 conditions per place. [2022-11-20 12:30:50,439 INFO L137 encePairwiseOnDemand]: 207/243 looper letters, 23 selfloop transitions, 4 changer transitions 0/220 dead transitions. [2022-11-20 12:30:50,439 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 220 transitions, 538 flow [2022-11-20 12:30:50,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:30:50,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 12:30:50,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1043 transitions. [2022-11-20 12:30:50,444 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8584362139917695 [2022-11-20 12:30:50,444 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1043 transitions. [2022-11-20 12:30:50,444 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1043 transitions. [2022-11-20 12:30:50,448 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:30:50,448 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1043 transitions. [2022-11-20 12:30:50,451 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 208.6) internal successors, (1043), 5 states have internal predecessors, (1043), 0 states have call successors, (0), 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 12:30:50,454 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 243.0) internal successors, (1458), 6 states have internal predecessors, (1458), 0 states have call successors, (0), 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 12:30:50,455 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 243.0) internal successors, (1458), 6 states have internal predecessors, (1458), 0 states have call successors, (0), 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 12:30:50,455 INFO L175 Difference]: Start difference. First operand has 219 places, 243 transitions, 530 flow. Second operand 5 states and 1043 transitions. [2022-11-20 12:30:50,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 220 transitions, 538 flow [2022-11-20 12:30:50,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 220 transitions, 538 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 12:30:50,461 INFO L231 Difference]: Finished difference. Result has 225 places, 216 transitions, 502 flow [2022-11-20 12:30:50,462 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=243, PETRI_DIFFERENCE_MINUEND_FLOW=470, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=502, PETRI_PLACES=225, PETRI_TRANSITIONS=216} [2022-11-20 12:30:50,463 INFO L288 CegarLoopForPetriNet]: 219 programPoint places, 6 predicate places. [2022-11-20 12:30:50,463 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 216 transitions, 502 flow [2022-11-20 12:30:50,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 194.75) internal successors, (779), 4 states have internal predecessors, (779), 0 states have call successors, (0), 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 12:30:50,464 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:30:50,464 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 12:30:50,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-20 12:30:50,465 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 12:30:50,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:30:50,465 INFO L85 PathProgramCache]: Analyzing trace with hash 1579151652, now seen corresponding path program 1 times [2022-11-20 12:30:50,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:30:50,466 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765942343] [2022-11-20 12:30:50,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:30:50,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:30:50,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:30:50,540 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 12:30:50,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:30:50,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765942343] [2022-11-20 12:30:50,541 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765942343] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:30:50,541 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:30:50,541 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:30:50,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21074585] [2022-11-20 12:30:50,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:30:50,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:30:50,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:30:50,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:30:50,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:30:50,545 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 182 out of 243 [2022-11-20 12:30:50,546 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 216 transitions, 502 flow. Second operand has 4 states, 4 states have (on average 183.0) internal successors, (732), 4 states have internal predecessors, (732), 0 states have call successors, (0), 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 12:30:50,547 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:30:50,547 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 182 of 243 [2022-11-20 12:30:50,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:30:58,614 INFO L130 PetriNetUnfolder]: 15423/54709 cut-off events. [2022-11-20 12:30:58,614 INFO L131 PetriNetUnfolder]: For 9729/9729 co-relation queries the response was YES. [2022-11-20 12:30:59,157 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79872 conditions, 54709 events. 15423/54709 cut-off events. For 9729/9729 co-relation queries the response was YES. Maximal size of possible extension queue 1677. Compared 771951 event pairs, 8220 based on Foata normal form. 0/48327 useless extension candidates. Maximal degree in co-relation 79801. Up to 15272 conditions per place. [2022-11-20 12:30:59,644 INFO L137 encePairwiseOnDemand]: 234/243 looper letters, 68 selfloop transitions, 10 changer transitions 0/263 dead transitions. [2022-11-20 12:30:59,645 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 263 transitions, 824 flow [2022-11-20 12:30:59,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:30:59,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 12:30:59,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 992 transitions. [2022-11-20 12:30:59,652 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8164609053497942 [2022-11-20 12:30:59,652 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 992 transitions. [2022-11-20 12:30:59,653 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 992 transitions. [2022-11-20 12:30:59,654 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:30:59,654 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 992 transitions. [2022-11-20 12:30:59,657 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 198.4) internal successors, (992), 5 states have internal predecessors, (992), 0 states have call successors, (0), 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 12:30:59,661 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 243.0) internal successors, (1458), 6 states have internal predecessors, (1458), 0 states have call successors, (0), 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 12:30:59,662 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 243.0) internal successors, (1458), 6 states have internal predecessors, (1458), 0 states have call successors, (0), 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 12:30:59,663 INFO L175 Difference]: Start difference. First operand has 225 places, 216 transitions, 502 flow. Second operand 5 states and 992 transitions. [2022-11-20 12:30:59,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 263 transitions, 824 flow [2022-11-20 12:30:59,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 263 transitions, 822 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 12:30:59,676 INFO L231 Difference]: Finished difference. Result has 231 places, 225 transitions, 579 flow [2022-11-20 12:30:59,678 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=243, PETRI_DIFFERENCE_MINUEND_FLOW=500, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=579, PETRI_PLACES=231, PETRI_TRANSITIONS=225} [2022-11-20 12:30:59,679 INFO L288 CegarLoopForPetriNet]: 219 programPoint places, 12 predicate places. [2022-11-20 12:30:59,679 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 225 transitions, 579 flow [2022-11-20 12:30:59,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 183.0) internal successors, (732), 4 states have internal predecessors, (732), 0 states have call successors, (0), 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 12:30:59,680 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:30:59,680 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:30:59,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-11-20 12:30:59,682 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 12:30:59,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:30:59,683 INFO L85 PathProgramCache]: Analyzing trace with hash -1283179857, now seen corresponding path program 1 times [2022-11-20 12:30:59,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:30:59,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214260239] [2022-11-20 12:30:59,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:30:59,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:30:59,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:30:59,739 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 12:30:59,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:30:59,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214260239] [2022-11-20 12:30:59,740 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214260239] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:30:59,740 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:30:59,740 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:30:59,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25577245] [2022-11-20 12:30:59,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:30:59,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:30:59,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:30:59,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:30:59,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:30:59,745 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 193 out of 243 [2022-11-20 12:30:59,746 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 225 transitions, 579 flow. Second operand has 4 states, 4 states have (on average 196.75) internal successors, (787), 4 states have internal predecessors, (787), 0 states have call successors, (0), 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 12:30:59,747 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:30:59,747 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 193 of 243 [2022-11-20 12:30:59,747 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:31:00,392 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1074] t_funEXIT-->L711-5: Formula: (= v_t_funThread1of4ForFork0_thidvar0_4 (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem14#1_17| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ .cse0 (- 4294967296))))) InVars {ULTIMATE.start_main_#t~mem14#1=|v_ULTIMATE.start_main_#t~mem14#1_17|, t_funThread1of4ForFork0_thidvar0=v_t_funThread1of4ForFork0_thidvar0_4} OutVars{ULTIMATE.start_main_#t~mem14#1=|v_ULTIMATE.start_main_#t~mem14#1_17|, t_funThread1of4ForFork0_thidvar0=v_t_funThread1of4ForFork0_thidvar0_4} AuxVars[] AssignedVars[][131], [30#L702-6true, Black: 225#(= |ULTIMATE.start_main_#t~post8#1| 0), Black: 227#(and (= |ULTIMATE.start_main_~i~0#1| 0) (= |ULTIMATE.start_main_#t~post8#1| 0)), Black: 224#(= |ULTIMATE.start_main_~i~0#1| 0), 107#L711-5true, Black: 235#(= |t_funThread1of4ForFork0_#t~post5| 0), Black: 234#(= ~global~0 0), Black: 237#(and (= |t_funThread1of4ForFork0_#t~post5| 0) (= ~global~0 0)), t_funThread1of4ForFork0NotInUse, t_funThread2of4ForFork0InUse, 242#true, t_funThread3of4ForFork0NotInUse, t_funThread4of4ForFork0NotInUse, 232#true]) [2022-11-20 12:31:00,392 INFO L383 tUnfolder$Statistics]: this new event has 210 ancestors and is cut-off event [2022-11-20 12:31:00,392 INFO L386 tUnfolder$Statistics]: existing Event has 210 ancestors and is cut-off event [2022-11-20 12:31:00,392 INFO L386 tUnfolder$Statistics]: existing Event has 163 ancestors and is cut-off event [2022-11-20 12:31:00,392 INFO L386 tUnfolder$Statistics]: existing Event has 116 ancestors and is cut-off event [2022-11-20 12:31:00,415 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1074] t_funEXIT-->L711-5: Formula: (= v_t_funThread1of4ForFork0_thidvar0_4 (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem14#1_17| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ .cse0 (- 4294967296))))) InVars {ULTIMATE.start_main_#t~mem14#1=|v_ULTIMATE.start_main_#t~mem14#1_17|, t_funThread1of4ForFork0_thidvar0=v_t_funThread1of4ForFork0_thidvar0_4} OutVars{ULTIMATE.start_main_#t~mem14#1=|v_ULTIMATE.start_main_#t~mem14#1_17|, t_funThread1of4ForFork0_thidvar0=v_t_funThread1of4ForFork0_thidvar0_4} AuxVars[] AssignedVars[][131], [Black: 225#(= |ULTIMATE.start_main_#t~post8#1| 0), Black: 227#(and (= |ULTIMATE.start_main_~i~0#1| 0) (= |ULTIMATE.start_main_#t~post8#1| 0)), Black: 224#(= |ULTIMATE.start_main_~i~0#1| 0), 107#L711-5true, Black: 235#(= |t_funThread1of4ForFork0_#t~post5| 0), Black: 234#(= ~global~0 0), Black: 237#(and (= |t_funThread1of4ForFork0_#t~post5| 0) (= ~global~0 0)), t_funThread1of4ForFork0NotInUse, t_funThread2of4ForFork0NotInUse, 242#true, t_funThread3of4ForFork0NotInUse, t_funThread4of4ForFork0NotInUse, 232#true]) [2022-11-20 12:31:00,415 INFO L383 tUnfolder$Statistics]: this new event has 235 ancestors and is cut-off event [2022-11-20 12:31:00,416 INFO L386 tUnfolder$Statistics]: existing Event has 94 ancestors and is cut-off event [2022-11-20 12:31:00,416 INFO L386 tUnfolder$Statistics]: existing Event has 141 ancestors and is cut-off event [2022-11-20 12:31:00,416 INFO L386 tUnfolder$Statistics]: existing Event has 141 ancestors and is cut-off event [2022-11-20 12:31:00,419 INFO L130 PetriNetUnfolder]: 161/2493 cut-off events. [2022-11-20 12:31:00,419 INFO L131 PetriNetUnfolder]: For 889/2025 co-relation queries the response was YES. [2022-11-20 12:31:00,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3163 conditions, 2493 events. 161/2493 cut-off events. For 889/2025 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 20671 event pairs, 59 based on Foata normal form. 99/2216 useless extension candidates. Maximal degree in co-relation 2424. Up to 194 conditions per place. [2022-11-20 12:31:00,457 INFO L137 encePairwiseOnDemand]: 237/243 looper letters, 15 selfloop transitions, 8 changer transitions 0/225 dead transitions. [2022-11-20 12:31:00,457 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 225 transitions, 623 flow [2022-11-20 12:31:00,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:31:00,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 12:31:00,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 986 transitions. [2022-11-20 12:31:00,460 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.811522633744856 [2022-11-20 12:31:00,460 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 986 transitions. [2022-11-20 12:31:00,461 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 986 transitions. [2022-11-20 12:31:00,461 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:31:00,462 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 986 transitions. [2022-11-20 12:31:00,464 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 197.2) internal successors, (986), 5 states have internal predecessors, (986), 0 states have call successors, (0), 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 12:31:00,466 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 243.0) internal successors, (1458), 6 states have internal predecessors, (1458), 0 states have call successors, (0), 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 12:31:00,467 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 243.0) internal successors, (1458), 6 states have internal predecessors, (1458), 0 states have call successors, (0), 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 12:31:00,467 INFO L175 Difference]: Start difference. First operand has 231 places, 225 transitions, 579 flow. Second operand 5 states and 986 transitions. [2022-11-20 12:31:00,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 225 transitions, 623 flow [2022-11-20 12:31:00,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 225 transitions, 618 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 12:31:00,474 INFO L231 Difference]: Finished difference. Result has 234 places, 225 transitions, 594 flow [2022-11-20 12:31:00,475 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=243, PETRI_DIFFERENCE_MINUEND_FLOW=570, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=594, PETRI_PLACES=234, PETRI_TRANSITIONS=225} [2022-11-20 12:31:00,475 INFO L288 CegarLoopForPetriNet]: 219 programPoint places, 15 predicate places. [2022-11-20 12:31:00,475 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 225 transitions, 594 flow [2022-11-20 12:31:00,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 196.75) internal successors, (787), 4 states have internal predecessors, (787), 0 states have call successors, (0), 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 12:31:00,476 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:31:00,476 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:31:00,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-11-20 12:31:00,477 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-20 12:31:00,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:31:00,477 INFO L85 PathProgramCache]: Analyzing trace with hash -1123869008, now seen corresponding path program 1 times [2022-11-20 12:31:00,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:31:00,478 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660977268] [2022-11-20 12:31:00,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:31:00,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:31:00,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:31:00,573 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 12:31:00,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:31:00,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660977268] [2022-11-20 12:31:00,574 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660977268] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:31:00,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1719072584] [2022-11-20 12:31:00,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:31:00,575 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:31:00,575 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8811a62-fe58-4b26-b824-81ded63f6ee2/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:31:00,579 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8811a62-fe58-4b26-b824-81ded63f6ee2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:31:00,611 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8811a62-fe58-4b26-b824-81ded63f6ee2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 12:31:00,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:31:00,699 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 12:31:00,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:31:00,765 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 12:31:00,765 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:31:00,765 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1719072584] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:31:00,766 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:31:00,766 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-20 12:31:00,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732758019] [2022-11-20 12:31:00,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:31:00,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:31:00,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:31:00,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:31:00,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:31:00,770 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 193 out of 243 [2022-11-20 12:31:00,771 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 225 transitions, 594 flow. Second operand has 6 states, 6 states have (on average 195.66666666666666) internal successors, (1174), 6 states have internal predecessors, (1174), 0 states have call successors, (0), 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 12:31:00,771 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:31:00,772 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 193 of 243 [2022-11-20 12:31:00,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:31:01,438 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1074] t_funEXIT-->L711-5: Formula: (= v_t_funThread1of4ForFork0_thidvar0_4 (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem14#1_17| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ .cse0 (- 4294967296))))) InVars {ULTIMATE.start_main_#t~mem14#1=|v_ULTIMATE.start_main_#t~mem14#1_17|, t_funThread1of4ForFork0_thidvar0=v_t_funThread1of4ForFork0_thidvar0_4} OutVars{ULTIMATE.start_main_#t~mem14#1=|v_ULTIMATE.start_main_#t~mem14#1_17|, t_funThread1of4ForFork0_thidvar0=v_t_funThread1of4ForFork0_thidvar0_4} AuxVars[] AssignedVars[][133], [30#L702-6true, Black: 225#(= |ULTIMATE.start_main_#t~post8#1| 0), Black: 227#(and (= |ULTIMATE.start_main_~i~0#1| 0) (= |ULTIMATE.start_main_#t~post8#1| 0)), Black: 224#(= |ULTIMATE.start_main_~i~0#1| 0), 107#L711-5true, Black: 235#(= |t_funThread1of4ForFork0_#t~post5| 0), Black: 234#(= ~global~0 0), Black: 237#(and (= |t_funThread1of4ForFork0_#t~post5| 0) (= ~global~0 0)), t_funThread1of4ForFork0NotInUse, 255#(<= 1 |ULTIMATE.start_main_~i~0#1|), t_funThread2of4ForFork0InUse, 242#true, t_funThread3of4ForFork0NotInUse, t_funThread4of4ForFork0NotInUse]) [2022-11-20 12:31:01,438 INFO L383 tUnfolder$Statistics]: this new event has 210 ancestors and is cut-off event [2022-11-20 12:31:01,438 INFO L386 tUnfolder$Statistics]: existing Event has 210 ancestors and is cut-off event [2022-11-20 12:31:01,439 INFO L386 tUnfolder$Statistics]: existing Event has 163 ancestors and is cut-off event [2022-11-20 12:31:01,439 INFO L386 tUnfolder$Statistics]: existing Event has 116 ancestors and is cut-off event [2022-11-20 12:31:01,461 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1074] t_funEXIT-->L711-5: Formula: (= v_t_funThread1of4ForFork0_thidvar0_4 (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem14#1_17| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ .cse0 (- 4294967296))))) InVars {ULTIMATE.start_main_#t~mem14#1=|v_ULTIMATE.start_main_#t~mem14#1_17|, t_funThread1of4ForFork0_thidvar0=v_t_funThread1of4ForFork0_thidvar0_4} OutVars{ULTIMATE.start_main_#t~mem14#1=|v_ULTIMATE.start_main_#t~mem14#1_17|, t_funThread1of4ForFork0_thidvar0=v_t_funThread1of4ForFork0_thidvar0_4} AuxVars[] AssignedVars[][133], [Black: 225#(= |ULTIMATE.start_main_#t~post8#1| 0), Black: 227#(and (= |ULTIMATE.start_main_~i~0#1| 0) (= |ULTIMATE.start_main_#t~post8#1| 0)), Black: 224#(= |ULTIMATE.start_main_~i~0#1| 0), 107#L711-5true, Black: 235#(= |t_funThread1of4ForFork0_#t~post5| 0), Black: 234#(= ~global~0 0), Black: 237#(and (= |t_funThread1of4ForFork0_#t~post5| 0) (= ~global~0 0)), t_funThread1of4ForFork0NotInUse, 255#(<= 1 |ULTIMATE.start_main_~i~0#1|), t_funThread2of4ForFork0NotInUse, 242#true, t_funThread3of4ForFork0NotInUse, t_funThread4of4ForFork0NotInUse]) [2022-11-20 12:31:01,461 INFO L383 tUnfolder$Statistics]: this new event has 235 ancestors and is cut-off event [2022-11-20 12:31:01,461 INFO L386 tUnfolder$Statistics]: existing Event has 141 ancestors and is cut-off event [2022-11-20 12:31:01,461 INFO L386 tUnfolder$Statistics]: existing Event has 94 ancestors and is cut-off event [2022-11-20 12:31:01,461 INFO L386 tUnfolder$Statistics]: existing Event has 141 ancestors and is cut-off event [2022-11-20 12:31:01,466 INFO L130 PetriNetUnfolder]: 161/2490 cut-off events. [2022-11-20 12:31:01,466 INFO L131 PetriNetUnfolder]: For 882/1918 co-relation queries the response was YES. [2022-11-20 12:31:01,492 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3173 conditions, 2490 events. 161/2490 cut-off events. For 882/1918 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 20666 event pairs, 59 based on Foata normal form. 38/2152 useless extension candidates. Maximal degree in co-relation 2423. Up to 203 conditions per place. [2022-11-20 12:31:01,507 INFO L137 encePairwiseOnDemand]: 238/243 looper letters, 19 selfloop transitions, 6 changer transitions 0/227 dead transitions. [2022-11-20 12:31:01,507 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 227 transitions, 646 flow [2022-11-20 12:31:01,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 12:31:01,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 12:31:01,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1377 transitions. [2022-11-20 12:31:01,511 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8095238095238095 [2022-11-20 12:31:01,511 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1377 transitions. [2022-11-20 12:31:01,512 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1377 transitions. [2022-11-20 12:31:01,513 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:31:01,513 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1377 transitions. [2022-11-20 12:31:01,516 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 196.71428571428572) internal successors, (1377), 7 states have internal predecessors, (1377), 0 states have call successors, (0), 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 12:31:01,520 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 243.0) internal successors, (1944), 8 states have internal predecessors, (1944), 0 states have call successors, (0), 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 12:31:01,521 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 243.0) internal successors, (1944), 8 states have internal predecessors, (1944), 0 states have call successors, (0), 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 12:31:01,521 INFO L175 Difference]: Start difference. First operand has 234 places, 225 transitions, 594 flow. Second operand 7 states and 1377 transitions. [2022-11-20 12:31:01,521 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 227 transitions, 646 flow [2022-11-20 12:31:01,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 227 transitions, 634 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 12:31:01,529 INFO L231 Difference]: Finished difference. Result has 236 places, 224 transitions, 590 flow [2022-11-20 12:31:01,529 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=243, PETRI_DIFFERENCE_MINUEND_FLOW=578, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=590, PETRI_PLACES=236, PETRI_TRANSITIONS=224} [2022-11-20 12:31:01,530 INFO L288 CegarLoopForPetriNet]: 219 programPoint places, 17 predicate places. [2022-11-20 12:31:01,530 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 224 transitions, 590 flow [2022-11-20 12:31:01,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 195.66666666666666) internal successors, (1174), 6 states have internal predecessors, (1174), 0 states have call successors, (0), 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 12:31:01,531 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:31:01,531 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:31:01,539 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8811a62-fe58-4b26-b824-81ded63f6ee2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 12:31:01,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8811a62-fe58-4b26-b824-81ded63f6ee2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-11-20 12:31:01,737 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-20 12:31:01,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:31:01,737 INFO L85 PathProgramCache]: Analyzing trace with hash 995820805, now seen corresponding path program 1 times [2022-11-20 12:31:01,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:31:01,738 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817127279] [2022-11-20 12:31:01,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:31:01,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:31:01,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:31:01,841 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 12:31:01,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:31:01,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817127279] [2022-11-20 12:31:01,842 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817127279] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:31:01,842 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:31:01,842 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:31:01,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296321631] [2022-11-20 12:31:01,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:31:01,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:31:01,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:31:01,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:31:01,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:31:01,846 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 177 out of 243 [2022-11-20 12:31:01,847 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 224 transitions, 590 flow. Second operand has 6 states, 6 states have (on average 178.5) internal successors, (1071), 6 states have internal predecessors, (1071), 0 states have call successors, (0), 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 12:31:01,847 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:31:01,848 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 177 of 243 [2022-11-20 12:31:01,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand