./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_94-alloc_region_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8393723b 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_3dcc321b-0ea8-48a9-b9cf-c4b1a0c55b7f/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dcc321b-0ea8-48a9-b9cf-c4b1a0c55b7f/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dcc321b-0ea8-48a9-b9cf-c4b1a0c55b7f/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dcc321b-0ea8-48a9-b9cf-c4b1a0c55b7f/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_94-alloc_region_racing.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dcc321b-0ea8-48a9-b9cf-c4b1a0c55b7f/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dcc321b-0ea8-48a9-b9cf-c4b1a0c55b7f/bin/uautomizer-TMbwUNV5ro --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 7faac9952fd378b53dcd8f21391daa9cc75834f7be2a5ad0c70d96fc8524bd08 --- 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-8393723 [2022-11-18 20:47:24,316 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 20:47:24,320 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 20:47:24,371 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 20:47:24,373 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 20:47:24,376 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 20:47:24,380 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 20:47:24,383 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 20:47:24,387 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 20:47:24,389 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 20:47:24,390 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 20:47:24,392 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 20:47:24,393 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 20:47:24,394 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 20:47:24,395 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 20:47:24,396 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 20:47:24,397 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 20:47:24,398 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 20:47:24,400 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 20:47:24,402 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 20:47:24,404 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 20:47:24,406 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 20:47:24,407 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 20:47:24,408 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 20:47:24,412 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 20:47:24,413 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 20:47:24,413 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 20:47:24,414 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 20:47:24,415 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 20:47:24,416 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 20:47:24,417 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 20:47:24,418 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 20:47:24,419 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 20:47:24,420 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 20:47:24,421 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 20:47:24,422 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 20:47:24,422 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 20:47:24,423 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 20:47:24,423 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 20:47:24,424 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 20:47:24,425 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 20:47:24,426 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dcc321b-0ea8-48a9-b9cf-c4b1a0c55b7f/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-18 20:47:24,452 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 20:47:24,452 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 20:47:24,453 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 20:47:24,453 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 20:47:24,454 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 20:47:24,454 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 20:47:24,455 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 20:47:24,456 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 20:47:24,456 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 20:47:24,457 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 20:47:24,457 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 20:47:24,457 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 20:47:24,458 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 20:47:24,458 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 20:47:24,458 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 20:47:24,459 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 20:47:24,459 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 20:47:24,460 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 20:47:24,460 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-18 20:47:24,460 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 20:47:24,461 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 20:47:24,461 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 20:47:24,461 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 20:47:24,462 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 20:47:24,462 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 20:47:24,462 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 20:47:24,462 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:47:24,463 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 20:47:24,463 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 20:47:24,463 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 20:47:24,464 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 20:47:24,464 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 20:47:24,464 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 20:47:24,464 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 20:47:24,465 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 20:47:24,465 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_3dcc321b-0ea8-48a9-b9cf-c4b1a0c55b7f/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dcc321b-0ea8-48a9-b9cf-c4b1a0c55b7f/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7faac9952fd378b53dcd8f21391daa9cc75834f7be2a5ad0c70d96fc8524bd08 [2022-11-18 20:47:24,837 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 20:47:24,881 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 20:47:24,885 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 20:47:24,889 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 20:47:24,890 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 20:47:24,892 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dcc321b-0ea8-48a9-b9cf-c4b1a0c55b7f/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/goblint-regression/28-race_reach_94-alloc_region_racing.i [2022-11-18 20:47:24,992 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dcc321b-0ea8-48a9-b9cf-c4b1a0c55b7f/bin/uautomizer-TMbwUNV5ro/data/2d25c878e/0cd46abed3854b45b3db9cc17610fc6a/FLAGde6e16ffd [2022-11-18 20:47:25,841 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 20:47:25,842 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dcc321b-0ea8-48a9-b9cf-c4b1a0c55b7f/sv-benchmarks/c/goblint-regression/28-race_reach_94-alloc_region_racing.i [2022-11-18 20:47:25,865 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dcc321b-0ea8-48a9-b9cf-c4b1a0c55b7f/bin/uautomizer-TMbwUNV5ro/data/2d25c878e/0cd46abed3854b45b3db9cc17610fc6a/FLAGde6e16ffd [2022-11-18 20:47:25,982 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dcc321b-0ea8-48a9-b9cf-c4b1a0c55b7f/bin/uautomizer-TMbwUNV5ro/data/2d25c878e/0cd46abed3854b45b3db9cc17610fc6a [2022-11-18 20:47:25,986 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 20:47:25,988 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 20:47:25,993 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 20:47:25,994 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 20:47:25,998 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 20:47:25,999 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:47:25" (1/1) ... [2022-11-18 20:47:26,001 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@603e4b6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:47:26, skipping insertion in model container [2022-11-18 20:47:26,002 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:47:25" (1/1) ... [2022-11-18 20:47:26,011 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 20:47:26,107 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 20:47:26,897 WARN L234 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_3dcc321b-0ea8-48a9-b9cf-c4b1a0c55b7f/sv-benchmarks/c/goblint-regression/28-race_reach_94-alloc_region_racing.i[58135,58148] [2022-11-18 20:47:26,944 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:47:26,959 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 20:47:27,011 WARN L234 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_3dcc321b-0ea8-48a9-b9cf-c4b1a0c55b7f/sv-benchmarks/c/goblint-regression/28-race_reach_94-alloc_region_racing.i[58135,58148] [2022-11-18 20:47:27,030 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:47:27,127 INFO L208 MainTranslator]: Completed translation [2022-11-18 20:47:27,128 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:47:27 WrapperNode [2022-11-18 20:47:27,128 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 20:47:27,129 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 20:47:27,130 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 20:47:27,130 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 20:47:27,140 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:47:27" (1/1) ... [2022-11-18 20:47:27,180 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:47:27" (1/1) ... [2022-11-18 20:47:27,221 INFO L138 Inliner]: procedures = 377, calls = 72, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 248 [2022-11-18 20:47:27,222 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 20:47:27,223 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 20:47:27,223 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 20:47:27,223 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 20:47:27,236 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:47:27" (1/1) ... [2022-11-18 20:47:27,236 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:47:27" (1/1) ... [2022-11-18 20:47:27,242 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:47:27" (1/1) ... [2022-11-18 20:47:27,243 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:47:27" (1/1) ... [2022-11-18 20:47:27,259 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:47:27" (1/1) ... [2022-11-18 20:47:27,287 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:47:27" (1/1) ... [2022-11-18 20:47:27,292 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:47:27" (1/1) ... [2022-11-18 20:47:27,302 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:47:27" (1/1) ... [2022-11-18 20:47:27,311 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 20:47:27,312 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 20:47:27,313 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 20:47:27,313 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 20:47:27,317 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:47:27" (1/1) ... [2022-11-18 20:47:27,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:47:27,345 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dcc321b-0ea8-48a9-b9cf-c4b1a0c55b7f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:47:27,364 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dcc321b-0ea8-48a9-b9cf-c4b1a0c55b7f/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 20:47:27,371 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dcc321b-0ea8-48a9-b9cf-c4b1a0c55b7f/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 20:47:27,418 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 20:47:27,418 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-18 20:47:27,418 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 20:47:27,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-18 20:47:27,419 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 20:47:27,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 20:47:27,419 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-18 20:47:27,420 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-18 20:47:27,420 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 20:47:27,420 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-18 20:47:27,421 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-18 20:47:27,421 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-18 20:47:27,421 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 20:47:27,421 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 20:47:27,422 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 20:47:27,424 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-18 20:47:27,659 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 20:47:27,662 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 20:47:28,358 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 20:47:28,370 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 20:47:28,377 INFO L300 CfgBuilder]: Removed 23 assume(true) statements. [2022-11-18 20:47:28,382 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:47:28 BoogieIcfgContainer [2022-11-18 20:47:28,382 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 20:47:28,388 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 20:47:28,388 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 20:47:28,393 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 20:47:28,393 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:47:25" (1/3) ... [2022-11-18 20:47:28,395 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b1a057 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:47:28, skipping insertion in model container [2022-11-18 20:47:28,395 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:47:27" (2/3) ... [2022-11-18 20:47:28,395 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b1a057 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:47:28, skipping insertion in model container [2022-11-18 20:47:28,396 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:47:28" (3/3) ... [2022-11-18 20:47:28,397 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_94-alloc_region_racing.i [2022-11-18 20:47:28,409 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 20:47:28,423 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 20:47:28,423 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2022-11-18 20:47:28,424 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 20:47:28,581 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-11-18 20:47:28,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 250 places, 276 transitions, 560 flow [2022-11-18 20:47:28,885 INFO L130 PetriNetUnfolder]: 45/391 cut-off events. [2022-11-18 20:47:28,885 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-18 20:47:28,907 INFO L83 FinitePrefix]: Finished finitePrefix Result has 397 conditions, 391 events. 45/391 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1201 event pairs, 0 based on Foata normal form. 0/327 useless extension candidates. Maximal degree in co-relation 213. Up to 8 conditions per place. [2022-11-18 20:47:28,910 INFO L82 GeneralOperation]: Start removeDead. Operand has 250 places, 276 transitions, 560 flow [2022-11-18 20:47:28,931 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 248 places, 273 transitions, 554 flow [2022-11-18 20:47:28,951 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:47:28,960 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;@37806a3a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:47:28,960 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2022-11-18 20:47:28,991 INFO L130 PetriNetUnfolder]: 1/72 cut-off events. [2022-11-18 20:47:28,992 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 20:47:28,993 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:47:28,994 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] [2022-11-18 20:47:28,995 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-18 20:47:29,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:47:29,003 INFO L85 PathProgramCache]: Analyzing trace with hash -188441723, now seen corresponding path program 1 times [2022-11-18 20:47:29,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:47:29,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087845362] [2022-11-18 20:47:29,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:47:29,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:47:29,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:47:29,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:47:29,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:47:29,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087845362] [2022-11-18 20:47:29,801 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087845362] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:47:29,801 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:47:29,801 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:47:29,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681983943] [2022-11-18 20:47:29,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:47:29,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:47:29,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:47:29,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:47:29,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:47:29,884 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 235 out of 276 [2022-11-18 20:47:29,902 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 273 transitions, 554 flow. Second operand has 4 states, 4 states have (on average 236.75) internal successors, (947), 4 states have internal predecessors, (947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:47:29,907 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:47:29,908 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 235 of 276 [2022-11-18 20:47:29,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:47:30,084 INFO L130 PetriNetUnfolder]: 3/248 cut-off events. [2022-11-18 20:47:30,085 INFO L131 PetriNetUnfolder]: For 12/29 co-relation queries the response was YES. [2022-11-18 20:47:30,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 269 conditions, 248 events. 3/248 cut-off events. For 12/29 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 441 event pairs, 0 based on Foata normal form. 60/292 useless extension candidates. Maximal degree in co-relation 192. Up to 7 conditions per place. [2022-11-18 20:47:30,092 INFO L137 encePairwiseOnDemand]: 244/276 looper letters, 10 selfloop transitions, 4 changer transitions 0/246 dead transitions. [2022-11-18 20:47:30,092 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 246 transitions, 528 flow [2022-11-18 20:47:30,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:47:30,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 20:47:30,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1251 transitions. [2022-11-18 20:47:30,123 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9065217391304348 [2022-11-18 20:47:30,124 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1251 transitions. [2022-11-18 20:47:30,124 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1251 transitions. [2022-11-18 20:47:30,131 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:47:30,134 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1251 transitions. [2022-11-18 20:47:30,143 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 250.2) internal successors, (1251), 5 states have internal predecessors, (1251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:47:30,156 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 276.0) internal successors, (1656), 6 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:47:30,157 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 276.0) internal successors, (1656), 6 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:47:30,160 INFO L175 Difference]: Start difference. First operand has 248 places, 273 transitions, 554 flow. Second operand 5 states and 1251 transitions. [2022-11-18 20:47:30,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 246 transitions, 528 flow [2022-11-18 20:47:30,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 246 transitions, 528 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 20:47:30,178 INFO L231 Difference]: Finished difference. Result has 249 places, 244 transitions, 508 flow [2022-11-18 20:47:30,181 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=276, PETRI_DIFFERENCE_MINUEND_FLOW=496, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=508, PETRI_PLACES=249, PETRI_TRANSITIONS=244} [2022-11-18 20:47:30,189 INFO L288 CegarLoopForPetriNet]: 248 programPoint places, 1 predicate places. [2022-11-18 20:47:30,189 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 244 transitions, 508 flow [2022-11-18 20:47:30,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 236.75) internal successors, (947), 4 states have internal predecessors, (947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:47:30,191 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:47:30,192 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] [2022-11-18 20:47:30,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 20:47:30,193 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-18 20:47:30,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:47:30,195 INFO L85 PathProgramCache]: Analyzing trace with hash -1178397513, now seen corresponding path program 1 times [2022-11-18 20:47:30,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:47:30,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617157148] [2022-11-18 20:47:30,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:47:30,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:47:30,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:47:30,294 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 20:47:30,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:47:30,417 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 20:47:30,418 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-18 20:47:30,425 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2022-11-18 20:47:30,427 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2022-11-18 20:47:30,428 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2022-11-18 20:47:30,429 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2022-11-18 20:47:30,429 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2022-11-18 20:47:30,430 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2022-11-18 20:47:30,432 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2022-11-18 20:47:30,432 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2022-11-18 20:47:30,433 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 17 remaining) [2022-11-18 20:47:30,441 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 17 remaining) [2022-11-18 20:47:30,442 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 17 remaining) [2022-11-18 20:47:30,442 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2022-11-18 20:47:30,443 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2022-11-18 20:47:30,444 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2022-11-18 20:47:30,445 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2022-11-18 20:47:30,445 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2022-11-18 20:47:30,446 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2022-11-18 20:47:30,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 20:47:30,446 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-18 20:47:30,451 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-18 20:47:30,452 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-18 20:47:30,587 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-18 20:47:30,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 330 places, 367 transitions, 752 flow [2022-11-18 20:47:30,841 INFO L130 PetriNetUnfolder]: 76/634 cut-off events. [2022-11-18 20:47:30,841 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-18 20:47:30,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 648 conditions, 634 events. 76/634 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2591 event pairs, 0 based on Foata normal form. 0/524 useless extension candidates. Maximal degree in co-relation 393. Up to 12 conditions per place. [2022-11-18 20:47:30,858 INFO L82 GeneralOperation]: Start removeDead. Operand has 330 places, 367 transitions, 752 flow [2022-11-18 20:47:30,871 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 330 places, 367 transitions, 752 flow [2022-11-18 20:47:30,873 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:47:30,880 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;@37806a3a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:47:30,881 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2022-11-18 20:47:30,896 INFO L130 PetriNetUnfolder]: 1/72 cut-off events. [2022-11-18 20:47:30,896 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 20:47:30,896 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:47:30,899 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] [2022-11-18 20:47:30,901 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-18 20:47:30,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:47:30,902 INFO L85 PathProgramCache]: Analyzing trace with hash 1256904845, now seen corresponding path program 1 times [2022-11-18 20:47:30,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:47:30,903 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836377503] [2022-11-18 20:47:30,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:47:30,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:47:30,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:47:31,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:47:31,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:47:31,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836377503] [2022-11-18 20:47:31,076 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836377503] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:47:31,077 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:47:31,077 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:47:31,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219540195] [2022-11-18 20:47:31,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:47:31,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:47:31,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:47:31,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:47:31,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:47:31,082 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 312 out of 367 [2022-11-18 20:47:31,084 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 367 transitions, 752 flow. Second operand has 4 states, 4 states have (on average 313.75) internal successors, (1255), 4 states have internal predecessors, (1255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:47:31,084 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:47:31,085 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 312 of 367 [2022-11-18 20:47:31,085 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:47:31,366 INFO L130 PetriNetUnfolder]: 8/475 cut-off events. [2022-11-18 20:47:31,367 INFO L131 PetriNetUnfolder]: For 14/46 co-relation queries the response was YES. [2022-11-18 20:47:31,375 INFO L83 FinitePrefix]: Finished finitePrefix Result has 518 conditions, 475 events. 8/475 cut-off events. For 14/46 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1692 event pairs, 0 based on Foata normal form. 108/543 useless extension candidates. Maximal degree in co-relation 330. Up to 21 conditions per place. [2022-11-18 20:47:31,379 INFO L137 encePairwiseOnDemand]: 324/367 looper letters, 19 selfloop transitions, 4 changer transitions 0/335 dead transitions. [2022-11-18 20:47:31,379 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 335 transitions, 734 flow [2022-11-18 20:47:31,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:47:31,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 20:47:31,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1656 transitions. [2022-11-18 20:47:31,385 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9024523160762943 [2022-11-18 20:47:31,386 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1656 transitions. [2022-11-18 20:47:31,386 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1656 transitions. [2022-11-18 20:47:31,387 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:47:31,388 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1656 transitions. [2022-11-18 20:47:31,392 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 331.2) internal successors, (1656), 5 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:47:31,397 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 367.0) internal successors, (2202), 6 states have internal predecessors, (2202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:47:31,399 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 367.0) internal successors, (2202), 6 states have internal predecessors, (2202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:47:31,400 INFO L175 Difference]: Start difference. First operand has 330 places, 367 transitions, 752 flow. Second operand 5 states and 1656 transitions. [2022-11-18 20:47:31,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 335 transitions, 734 flow [2022-11-18 20:47:31,406 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 331 places, 335 transitions, 734 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 20:47:31,416 INFO L231 Difference]: Finished difference. Result has 334 places, 331 transitions, 706 flow [2022-11-18 20:47:31,419 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=367, PETRI_DIFFERENCE_MINUEND_FLOW=674, PETRI_DIFFERENCE_MINUEND_PLACES=327, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=328, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=324, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=706, PETRI_PLACES=334, PETRI_TRANSITIONS=331} [2022-11-18 20:47:31,420 INFO L288 CegarLoopForPetriNet]: 330 programPoint places, 4 predicate places. [2022-11-18 20:47:31,420 INFO L495 AbstractCegarLoop]: Abstraction has has 334 places, 331 transitions, 706 flow [2022-11-18 20:47:31,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 313.75) internal successors, (1255), 4 states have internal predecessors, (1255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:47:31,422 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:47:31,422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:47:31,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 20:47:31,423 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-18 20:47:31,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:47:31,423 INFO L85 PathProgramCache]: Analyzing trace with hash -873722239, now seen corresponding path program 1 times [2022-11-18 20:47:31,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:47:31,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313472109] [2022-11-18 20:47:31,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:47:31,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:47:31,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:47:31,652 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:47:31,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:47:31,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313472109] [2022-11-18 20:47:31,654 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313472109] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:47:31,655 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:47:31,655 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:47:31,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965609003] [2022-11-18 20:47:31,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:47:31,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:47:31,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:47:31,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:47:31,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:47:31,662 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 312 out of 367 [2022-11-18 20:47:31,665 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 331 transitions, 706 flow. Second operand has 4 states, 4 states have (on average 315.75) internal successors, (1263), 4 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) [2022-11-18 20:47:31,665 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:47:31,665 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 312 of 367 [2022-11-18 20:47:31,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:47:31,891 INFO L130 PetriNetUnfolder]: 8/474 cut-off events. [2022-11-18 20:47:31,891 INFO L131 PetriNetUnfolder]: For 22/52 co-relation queries the response was YES. [2022-11-18 20:47:31,899 INFO L83 FinitePrefix]: Finished finitePrefix Result has 533 conditions, 474 events. 8/474 cut-off events. For 22/52 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1687 event pairs, 0 based on Foata normal form. 7/445 useless extension candidates. Maximal degree in co-relation 442. Up to 10 conditions per place. [2022-11-18 20:47:31,903 INFO L137 encePairwiseOnDemand]: 361/367 looper letters, 11 selfloop transitions, 8 changer transitions 0/331 dead transitions. [2022-11-18 20:47:31,903 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 331 transitions, 742 flow [2022-11-18 20:47:31,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:47:31,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 20:47:31,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1577 transitions. [2022-11-18 20:47:31,908 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8594005449591281 [2022-11-18 20:47:31,908 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1577 transitions. [2022-11-18 20:47:31,908 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1577 transitions. [2022-11-18 20:47:31,909 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:47:31,910 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1577 transitions. [2022-11-18 20:47:31,914 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 315.4) internal successors, (1577), 5 states have internal predecessors, (1577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:47:31,920 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 367.0) internal successors, (2202), 6 states have internal predecessors, (2202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:47:31,926 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 367.0) internal successors, (2202), 6 states have internal predecessors, (2202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:47:31,927 INFO L175 Difference]: Start difference. First operand has 334 places, 331 transitions, 706 flow. Second operand 5 states and 1577 transitions. [2022-11-18 20:47:31,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 331 transitions, 742 flow [2022-11-18 20:47:31,931 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 331 transitions, 740 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 20:47:31,936 INFO L231 Difference]: Finished difference. Result has 337 places, 331 transitions, 724 flow [2022-11-18 20:47:31,937 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=367, PETRI_DIFFERENCE_MINUEND_FLOW=700, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=330, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=322, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=724, PETRI_PLACES=337, PETRI_TRANSITIONS=331} [2022-11-18 20:47:31,940 INFO L288 CegarLoopForPetriNet]: 330 programPoint places, 7 predicate places. [2022-11-18 20:47:31,940 INFO L495 AbstractCegarLoop]: Abstraction has has 337 places, 331 transitions, 724 flow [2022-11-18 20:47:31,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 315.75) internal successors, (1263), 4 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) [2022-11-18 20:47:31,943 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:47:31,943 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:47:31,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 20:47:31,945 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-18 20:47:31,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:47:31,946 INFO L85 PathProgramCache]: Analyzing trace with hash -1315584640, now seen corresponding path program 1 times [2022-11-18 20:47:31,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:47:31,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768155229] [2022-11-18 20:47:31,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:47:31,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:47:31,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:47:32,252 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:47:32,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:47:32,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768155229] [2022-11-18 20:47:32,254 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768155229] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:47:32,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1898555818] [2022-11-18 20:47:32,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:47:32,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:47:32,255 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dcc321b-0ea8-48a9-b9cf-c4b1a0c55b7f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:47:32,262 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dcc321b-0ea8-48a9-b9cf-c4b1a0c55b7f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:47:32,278 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dcc321b-0ea8-48a9-b9cf-c4b1a0c55b7f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 20:47:32,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:47:32,484 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 20:47:32,488 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:47:32,656 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:47:32,656 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:47:32,657 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1898555818] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:47:32,657 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:47:32,657 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2022-11-18 20:47:32,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443971455] [2022-11-18 20:47:32,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:47:32,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:47:32,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:47:32,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:47:32,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-18 20:47:32,663 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 312 out of 367 [2022-11-18 20:47:32,666 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 331 transitions, 724 flow. Second operand has 5 states, 5 states have (on average 315.2) internal successors, (1576), 5 states have internal predecessors, (1576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:47:32,666 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:47:32,666 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 312 of 367 [2022-11-18 20:47:32,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:47:32,897 INFO L130 PetriNetUnfolder]: 8/473 cut-off events. [2022-11-18 20:47:32,897 INFO L131 PetriNetUnfolder]: For 31/59 co-relation queries the response was YES. [2022-11-18 20:47:32,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 542 conditions, 473 events. 8/473 cut-off events. For 31/59 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1680 event pairs, 0 based on Foata normal form. 3/440 useless extension candidates. Maximal degree in co-relation 346. Up to 17 conditions per place. [2022-11-18 20:47:32,909 INFO L137 encePairwiseOnDemand]: 363/367 looper letters, 13 selfloop transitions, 5 changer transitions 0/330 dead transitions. [2022-11-18 20:47:32,909 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 330 transitions, 756 flow [2022-11-18 20:47:32,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:47:32,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-18 20:47:32,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1263 transitions. [2022-11-18 20:47:32,914 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8603542234332425 [2022-11-18 20:47:32,914 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1263 transitions. [2022-11-18 20:47:32,915 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1263 transitions. [2022-11-18 20:47:32,916 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:47:32,916 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1263 transitions. [2022-11-18 20:47:32,922 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 315.75) internal successors, (1263), 4 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) [2022-11-18 20:47:32,926 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 367.0) internal successors, (1835), 5 states have internal predecessors, (1835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:47:32,927 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 367.0) internal successors, (1835), 5 states have internal predecessors, (1835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:47:32,928 INFO L175 Difference]: Start difference. First operand has 337 places, 331 transitions, 724 flow. Second operand 4 states and 1263 transitions. [2022-11-18 20:47:32,928 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 330 transitions, 756 flow [2022-11-18 20:47:32,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 330 transitions, 744 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 20:47:32,939 INFO L231 Difference]: Finished difference. Result has 336 places, 330 transitions, 718 flow [2022-11-18 20:47:32,940 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=367, PETRI_DIFFERENCE_MINUEND_FLOW=708, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=330, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=325, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=718, PETRI_PLACES=336, PETRI_TRANSITIONS=330} [2022-11-18 20:47:32,943 INFO L288 CegarLoopForPetriNet]: 330 programPoint places, 6 predicate places. [2022-11-18 20:47:32,943 INFO L495 AbstractCegarLoop]: Abstraction has has 336 places, 330 transitions, 718 flow [2022-11-18 20:47:32,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 315.2) internal successors, (1576), 5 states have internal predecessors, (1576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:47:32,944 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:47:32,945 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, 1, 1, 1, 1, 1, 1] [2022-11-18 20:47:32,961 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dcc321b-0ea8-48a9-b9cf-c4b1a0c55b7f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-18 20:47:33,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dcc321b-0ea8-48a9-b9cf-c4b1a0c55b7f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:47:33,161 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-18 20:47:33,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:47:33,162 INFO L85 PathProgramCache]: Analyzing trace with hash 800502668, now seen corresponding path program 1 times [2022-11-18 20:47:33,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:47:33,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070279292] [2022-11-18 20:47:33,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:47:33,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:47:33,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:47:33,218 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 20:47:33,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:47:33,254 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 20:47:33,254 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-18 20:47:33,255 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 21 remaining) [2022-11-18 20:47:33,255 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 21 remaining) [2022-11-18 20:47:33,255 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 21 remaining) [2022-11-18 20:47:33,255 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 21 remaining) [2022-11-18 20:47:33,256 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 21 remaining) [2022-11-18 20:47:33,256 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 21 remaining) [2022-11-18 20:47:33,256 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 21 remaining) [2022-11-18 20:47:33,256 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 21 remaining) [2022-11-18 20:47:33,257 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 21 remaining) [2022-11-18 20:47:33,257 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 21 remaining) [2022-11-18 20:47:33,257 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 21 remaining) [2022-11-18 20:47:33,257 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 21 remaining) [2022-11-18 20:47:33,258 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 21 remaining) [2022-11-18 20:47:33,258 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 21 remaining) [2022-11-18 20:47:33,258 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 21 remaining) [2022-11-18 20:47:33,258 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 21 remaining) [2022-11-18 20:47:33,259 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 21 remaining) [2022-11-18 20:47:33,259 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 21 remaining) [2022-11-18 20:47:33,259 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 21 remaining) [2022-11-18 20:47:33,259 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 21 remaining) [2022-11-18 20:47:33,260 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 21 remaining) [2022-11-18 20:47:33,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-18 20:47:33,260 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-11-18 20:47:33,261 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-18 20:47:33,261 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-18 20:47:33,325 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-18 20:47:33,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 410 places, 458 transitions, 946 flow [2022-11-18 20:47:33,596 INFO L130 PetriNetUnfolder]: 112/918 cut-off events. [2022-11-18 20:47:33,596 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-11-18 20:47:33,617 INFO L83 FinitePrefix]: Finished finitePrefix Result has 946 conditions, 918 events. 112/918 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 4225 event pairs, 1 based on Foata normal form. 0/754 useless extension candidates. Maximal degree in co-relation 642. Up to 16 conditions per place. [2022-11-18 20:47:33,617 INFO L82 GeneralOperation]: Start removeDead. Operand has 410 places, 458 transitions, 946 flow [2022-11-18 20:47:33,633 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 410 places, 458 transitions, 946 flow [2022-11-18 20:47:33,636 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:47:33,640 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;@37806a3a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:47:33,641 INFO L358 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2022-11-18 20:47:33,649 INFO L130 PetriNetUnfolder]: 1/73 cut-off events. [2022-11-18 20:47:33,649 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 20:47:33,649 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:47:33,649 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] [2022-11-18 20:47:33,650 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-18 20:47:33,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:47:33,650 INFO L85 PathProgramCache]: Analyzing trace with hash 1799745712, now seen corresponding path program 1 times [2022-11-18 20:47:33,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:47:33,651 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854959021] [2022-11-18 20:47:33,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:47:33,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:47:33,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:47:33,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:47:33,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:47:33,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854959021] [2022-11-18 20:47:33,791 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854959021] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:47:33,791 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:47:33,791 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:47:33,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177220374] [2022-11-18 20:47:33,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:47:33,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:47:33,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:47:33,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:47:33,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:47:33,796 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 389 out of 458 [2022-11-18 20:47:33,801 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 410 places, 458 transitions, 946 flow. Second operand has 4 states, 4 states have (on average 390.75) internal successors, (1563), 4 states have internal predecessors, (1563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:47:33,801 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:47:33,802 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 389 of 458 [2022-11-18 20:47:33,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:47:34,175 INFO L130 PetriNetUnfolder]: 16/729 cut-off events. [2022-11-18 20:47:34,175 INFO L131 PetriNetUnfolder]: For 76/195 co-relation queries the response was YES. [2022-11-18 20:47:34,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 805 conditions, 729 events. 16/729 cut-off events. For 76/195 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 3231 event pairs, 1 based on Foata normal form. 232/893 useless extension candidates. Maximal degree in co-relation 567. Up to 40 conditions per place. [2022-11-18 20:47:34,199 INFO L137 encePairwiseOnDemand]: 404/458 looper letters, 21 selfloop transitions, 4 changer transitions 0/414 dead transitions. [2022-11-18 20:47:34,199 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 410 places, 414 transitions, 908 flow [2022-11-18 20:47:34,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:47:34,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 20:47:34,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2054 transitions. [2022-11-18 20:47:34,205 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.896943231441048 [2022-11-18 20:47:34,205 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2054 transitions. [2022-11-18 20:47:34,205 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2054 transitions. [2022-11-18 20:47:34,207 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:47:34,207 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2054 transitions. [2022-11-18 20:47:34,212 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 410.8) internal successors, (2054), 5 states have internal predecessors, (2054), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:47:34,218 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 458.0) internal successors, (2748), 6 states have internal predecessors, (2748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:47:34,219 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 458.0) internal successors, (2748), 6 states have internal predecessors, (2748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:47:34,220 INFO L175 Difference]: Start difference. First operand has 410 places, 458 transitions, 946 flow. Second operand 5 states and 2054 transitions. [2022-11-18 20:47:34,220 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 410 places, 414 transitions, 908 flow [2022-11-18 20:47:34,229 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 410 places, 414 transitions, 908 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 20:47:34,236 INFO L231 Difference]: Finished difference. Result has 413 places, 410 transitions, 876 flow [2022-11-18 20:47:34,237 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=458, PETRI_DIFFERENCE_MINUEND_FLOW=844, PETRI_DIFFERENCE_MINUEND_PLACES=406, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=407, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=403, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=876, PETRI_PLACES=413, PETRI_TRANSITIONS=410} [2022-11-18 20:47:34,239 INFO L288 CegarLoopForPetriNet]: 410 programPoint places, 3 predicate places. [2022-11-18 20:47:34,240 INFO L495 AbstractCegarLoop]: Abstraction has has 413 places, 410 transitions, 876 flow [2022-11-18 20:47:34,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 390.75) internal successors, (1563), 4 states have internal predecessors, (1563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:47:34,241 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:47:34,241 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:47:34,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 20:47:34,242 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-18 20:47:34,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:47:34,242 INFO L85 PathProgramCache]: Analyzing trace with hash 1012456829, now seen corresponding path program 1 times [2022-11-18 20:47:34,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:47:34,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565633442] [2022-11-18 20:47:34,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:47:34,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:47:34,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:47:34,351 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:47:34,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:47:34,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565633442] [2022-11-18 20:47:34,352 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565633442] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:47:34,352 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:47:34,353 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:47:34,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298846425] [2022-11-18 20:47:34,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:47:34,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:47:34,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:47:34,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:47:34,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:47:34,357 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 389 out of 458 [2022-11-18 20:47:34,359 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 413 places, 410 transitions, 876 flow. Second operand has 4 states, 4 states have (on average 392.75) internal successors, (1571), 4 states have internal predecessors, (1571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:47:34,359 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:47:34,360 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 389 of 458 [2022-11-18 20:47:34,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:47:34,693 INFO L130 PetriNetUnfolder]: 16/727 cut-off events. [2022-11-18 20:47:34,693 INFO L131 PetriNetUnfolder]: For 82/191 co-relation queries the response was YES. [2022-11-18 20:47:34,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 823 conditions, 727 events. 16/727 cut-off events. For 82/191 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 3213 event pairs, 1 based on Foata normal form. 11/677 useless extension candidates. Maximal degree in co-relation 731. Up to 20 conditions per place. [2022-11-18 20:47:34,715 INFO L137 encePairwiseOnDemand]: 452/458 looper letters, 13 selfloop transitions, 8 changer transitions 0/410 dead transitions. [2022-11-18 20:47:34,715 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 416 places, 410 transitions, 916 flow [2022-11-18 20:47:34,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:47:34,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 20:47:34,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1964 transitions. [2022-11-18 20:47:34,721 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8576419213973799 [2022-11-18 20:47:34,721 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1964 transitions. [2022-11-18 20:47:34,721 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1964 transitions. [2022-11-18 20:47:34,723 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:47:34,723 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1964 transitions. [2022-11-18 20:47:34,728 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 392.8) internal successors, (1964), 5 states have internal predecessors, (1964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:47:34,733 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 458.0) internal successors, (2748), 6 states have internal predecessors, (2748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:47:34,734 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 458.0) internal successors, (2748), 6 states have internal predecessors, (2748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:47:34,735 INFO L175 Difference]: Start difference. First operand has 413 places, 410 transitions, 876 flow. Second operand 5 states and 1964 transitions. [2022-11-18 20:47:34,735 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 416 places, 410 transitions, 916 flow [2022-11-18 20:47:34,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 415 places, 410 transitions, 914 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 20:47:34,745 INFO L231 Difference]: Finished difference. Result has 416 places, 410 transitions, 894 flow [2022-11-18 20:47:34,746 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=458, PETRI_DIFFERENCE_MINUEND_FLOW=870, PETRI_DIFFERENCE_MINUEND_PLACES=411, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=409, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=401, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=894, PETRI_PLACES=416, PETRI_TRANSITIONS=410} [2022-11-18 20:47:34,747 INFO L288 CegarLoopForPetriNet]: 410 programPoint places, 6 predicate places. [2022-11-18 20:47:34,747 INFO L495 AbstractCegarLoop]: Abstraction has has 416 places, 410 transitions, 894 flow [2022-11-18 20:47:34,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 392.75) internal successors, (1571), 4 states have internal predecessors, (1571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:47:34,748 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:47:34,749 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:47:34,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-18 20:47:34,749 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-18 20:47:34,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:47:34,750 INFO L85 PathProgramCache]: Analyzing trace with hash 1321392078, now seen corresponding path program 1 times [2022-11-18 20:47:34,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:47:34,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199784364] [2022-11-18 20:47:34,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:47:34,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:47:34,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:47:34,925 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:47:34,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:47:34,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199784364] [2022-11-18 20:47:34,926 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199784364] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:47:34,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1523347705] [2022-11-18 20:47:34,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:47:34,926 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:47:34,927 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dcc321b-0ea8-48a9-b9cf-c4b1a0c55b7f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:47:34,928 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dcc321b-0ea8-48a9-b9cf-c4b1a0c55b7f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:47:34,955 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dcc321b-0ea8-48a9-b9cf-c4b1a0c55b7f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 20:47:35,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:47:35,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 20:47:35,145 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:47:35,206 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:47:35,206 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:47:35,207 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1523347705] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:47:35,207 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:47:35,207 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2022-11-18 20:47:35,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942637264] [2022-11-18 20:47:35,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:47:35,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:47:35,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:47:35,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:47:35,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-18 20:47:35,212 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 389 out of 458 [2022-11-18 20:47:35,215 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 416 places, 410 transitions, 894 flow. Second operand has 5 states, 5 states have (on average 392.2) internal successors, (1961), 5 states have internal predecessors, (1961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:47:35,215 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:47:35,215 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 389 of 458 [2022-11-18 20:47:35,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:47:35,561 INFO L130 PetriNetUnfolder]: 16/725 cut-off events. [2022-11-18 20:47:35,562 INFO L131 PetriNetUnfolder]: For 92/191 co-relation queries the response was YES. [2022-11-18 20:47:35,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 834 conditions, 725 events. 16/725 cut-off events. For 92/191 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 3209 event pairs, 1 based on Foata normal form. 5/669 useless extension candidates. Maximal degree in co-relation 588. Up to 30 conditions per place. [2022-11-18 20:47:35,586 INFO L137 encePairwiseOnDemand]: 454/458 looper letters, 15 selfloop transitions, 5 changer transitions 0/409 dead transitions. [2022-11-18 20:47:35,586 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 418 places, 409 transitions, 930 flow [2022-11-18 20:47:35,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:47:35,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-18 20:47:35,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1573 transitions. [2022-11-18 20:47:35,592 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8586244541484717 [2022-11-18 20:47:35,593 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1573 transitions. [2022-11-18 20:47:35,593 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1573 transitions. [2022-11-18 20:47:35,594 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:47:35,595 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1573 transitions. [2022-11-18 20:47:35,600 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 393.25) internal successors, (1573), 4 states have internal predecessors, (1573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:47:35,604 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 458.0) internal successors, (2290), 5 states have internal predecessors, (2290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:47:35,606 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 458.0) internal successors, (2290), 5 states have internal predecessors, (2290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:47:35,606 INFO L175 Difference]: Start difference. First operand has 416 places, 410 transitions, 894 flow. Second operand 4 states and 1573 transitions. [2022-11-18 20:47:35,607 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 418 places, 409 transitions, 930 flow [2022-11-18 20:47:35,611 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 415 places, 409 transitions, 918 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 20:47:35,619 INFO L231 Difference]: Finished difference. Result has 415 places, 409 transitions, 888 flow [2022-11-18 20:47:35,620 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=458, PETRI_DIFFERENCE_MINUEND_FLOW=878, PETRI_DIFFERENCE_MINUEND_PLACES=412, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=409, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=404, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=888, PETRI_PLACES=415, PETRI_TRANSITIONS=409} [2022-11-18 20:47:35,621 INFO L288 CegarLoopForPetriNet]: 410 programPoint places, 5 predicate places. [2022-11-18 20:47:35,621 INFO L495 AbstractCegarLoop]: Abstraction has has 415 places, 409 transitions, 888 flow [2022-11-18 20:47:35,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 392.2) internal successors, (1961), 5 states have internal predecessors, (1961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:47:35,622 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:47:35,623 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:47:35,637 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dcc321b-0ea8-48a9-b9cf-c4b1a0c55b7f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-18 20:47:35,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dcc321b-0ea8-48a9-b9cf-c4b1a0c55b7f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-11-18 20:47:35,830 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-18 20:47:35,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:47:35,830 INFO L85 PathProgramCache]: Analyzing trace with hash -1198500177, now seen corresponding path program 1 times [2022-11-18 20:47:35,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:47:35,830 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242822259] [2022-11-18 20:47:35,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:47:35,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:47:35,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:47:35,874 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 20:47:35,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:47:35,919 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 20:47:35,919 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-18 20:47:35,920 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (24 of 25 remaining) [2022-11-18 20:47:35,920 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 25 remaining) [2022-11-18 20:47:35,920 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 25 remaining) [2022-11-18 20:47:35,921 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 25 remaining) [2022-11-18 20:47:35,921 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 25 remaining) [2022-11-18 20:47:35,921 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 25 remaining) [2022-11-18 20:47:35,921 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 25 remaining) [2022-11-18 20:47:35,921 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 25 remaining) [2022-11-18 20:47:35,922 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 25 remaining) [2022-11-18 20:47:35,922 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 25 remaining) [2022-11-18 20:47:35,922 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 25 remaining) [2022-11-18 20:47:35,922 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 25 remaining) [2022-11-18 20:47:35,923 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 25 remaining) [2022-11-18 20:47:35,923 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 25 remaining) [2022-11-18 20:47:35,923 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 25 remaining) [2022-11-18 20:47:35,923 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 25 remaining) [2022-11-18 20:47:35,924 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 25 remaining) [2022-11-18 20:47:35,924 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 25 remaining) [2022-11-18 20:47:35,924 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 25 remaining) [2022-11-18 20:47:35,924 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 25 remaining) [2022-11-18 20:47:35,924 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 25 remaining) [2022-11-18 20:47:35,925 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 25 remaining) [2022-11-18 20:47:35,925 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 25 remaining) [2022-11-18 20:47:35,925 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 25 remaining) [2022-11-18 20:47:35,925 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 25 remaining) [2022-11-18 20:47:35,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-18 20:47:35,926 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-11-18 20:47:35,927 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-18 20:47:35,927 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-11-18 20:47:36,004 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-11-18 20:47:36,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 490 places, 549 transitions, 1142 flow [2022-11-18 20:47:36,481 INFO L130 PetriNetUnfolder]: 160/1286 cut-off events. [2022-11-18 20:47:36,481 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2022-11-18 20:47:36,522 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1341 conditions, 1286 events. 160/1286 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 6500 event pairs, 6 based on Foata normal form. 0/1052 useless extension candidates. Maximal degree in co-relation 938. Up to 32 conditions per place. [2022-11-18 20:47:36,523 INFO L82 GeneralOperation]: Start removeDead. Operand has 490 places, 549 transitions, 1142 flow [2022-11-18 20:47:36,548 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 490 places, 549 transitions, 1142 flow [2022-11-18 20:47:36,550 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:47:36,550 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=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;@37806a3a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:47:36,551 INFO L358 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2022-11-18 20:47:36,560 INFO L130 PetriNetUnfolder]: 1/73 cut-off events. [2022-11-18 20:47:36,560 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 20:47:36,560 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:47:36,560 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] [2022-11-18 20:47:36,561 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2022-11-18 20:47:36,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:47:36,561 INFO L85 PathProgramCache]: Analyzing trace with hash 1440080878, now seen corresponding path program 1 times [2022-11-18 20:47:36,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:47:36,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402891140] [2022-11-18 20:47:36,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:47:36,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:47:36,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:47:36,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:47:36,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:47:36,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402891140] [2022-11-18 20:47:36,685 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402891140] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:47:36,685 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:47:36,686 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:47:36,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812962179] [2022-11-18 20:47:36,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:47:36,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:47:36,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:47:36,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:47:36,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:47:36,690 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 466 out of 549 [2022-11-18 20:47:36,703 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 490 places, 549 transitions, 1142 flow. Second operand has 4 states, 4 states have (on average 467.75) internal successors, (1871), 4 states have internal predecessors, (1871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:47:36,713 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:47:36,713 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 466 of 549 [2022-11-18 20:47:36,713 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:47:37,230 INFO L130 PetriNetUnfolder]: 32/1063 cut-off events. [2022-11-18 20:47:37,231 INFO L131 PetriNetUnfolder]: For 178/438 co-relation queries the response was YES. [2022-11-18 20:47:37,264 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1197 conditions, 1063 events. 32/1063 cut-off events. For 178/438 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 5508 event pairs, 6 based on Foata normal form. 564/1519 useless extension candidates. Maximal degree in co-relation 854. Up to 71 conditions per place. [2022-11-18 20:47:37,273 INFO L137 encePairwiseOnDemand]: 484/549 looper letters, 23 selfloop transitions, 4 changer transitions 0/493 dead transitions. [2022-11-18 20:47:37,273 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 489 places, 493 transitions, 1084 flow [2022-11-18 20:47:37,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:47:37,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 20:47:37,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2452 transitions. [2022-11-18 20:47:37,282 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8932604735883425 [2022-11-18 20:47:37,282 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2452 transitions. [2022-11-18 20:47:37,282 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2452 transitions. [2022-11-18 20:47:37,286 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:47:37,287 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2452 transitions. [2022-11-18 20:47:37,296 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 490.4) internal successors, (2452), 5 states have internal predecessors, (2452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:47:37,302 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 549.0) internal successors, (3294), 6 states have internal predecessors, (3294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:47:37,304 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 549.0) internal successors, (3294), 6 states have internal predecessors, (3294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:47:37,304 INFO L175 Difference]: Start difference. First operand has 490 places, 549 transitions, 1142 flow. Second operand 5 states and 2452 transitions. [2022-11-18 20:47:37,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 489 places, 493 transitions, 1084 flow [2022-11-18 20:47:37,309 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 489 places, 493 transitions, 1084 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 20:47:37,320 INFO L231 Difference]: Finished difference. Result has 492 places, 489 transitions, 1048 flow [2022-11-18 20:47:37,321 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=549, PETRI_DIFFERENCE_MINUEND_FLOW=1016, PETRI_DIFFERENCE_MINUEND_PLACES=485, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=486, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=482, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1048, PETRI_PLACES=492, PETRI_TRANSITIONS=489} [2022-11-18 20:47:37,323 INFO L288 CegarLoopForPetriNet]: 490 programPoint places, 2 predicate places. [2022-11-18 20:47:37,323 INFO L495 AbstractCegarLoop]: Abstraction has has 492 places, 489 transitions, 1048 flow [2022-11-18 20:47:37,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 467.75) internal successors, (1871), 4 states have internal predecessors, (1871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:47:37,324 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:47:37,324 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:47:37,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-18 20:47:37,325 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2022-11-18 20:47:37,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:47:37,326 INFO L85 PathProgramCache]: Analyzing trace with hash -1768697004, now seen corresponding path program 1 times [2022-11-18 20:47:37,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:47:37,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276347606] [2022-11-18 20:47:37,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:47:37,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:47:37,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:47:37,432 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:47:37,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:47:37,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276347606] [2022-11-18 20:47:37,432 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276347606] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:47:37,433 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:47:37,433 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:47:37,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446270121] [2022-11-18 20:47:37,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:47:37,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:47:37,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:47:37,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:47:37,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:47:37,437 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 466 out of 549 [2022-11-18 20:47:37,439 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 492 places, 489 transitions, 1048 flow. Second operand has 4 states, 4 states have (on average 469.75) internal successors, (1879), 4 states have internal predecessors, (1879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:47:37,439 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:47:37,439 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 466 of 549 [2022-11-18 20:47:37,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:47:37,963 INFO L130 PetriNetUnfolder]: 32/1060 cut-off events. [2022-11-18 20:47:37,963 INFO L131 PetriNetUnfolder]: For 182/419 co-relation queries the response was YES. [2022-11-18 20:47:38,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1218 conditions, 1060 events. 32/1060 cut-off events. For 182/419 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 5480 event pairs, 6 based on Foata normal form. 15/977 useless extension candidates. Maximal degree in co-relation 1125. Up to 42 conditions per place. [2022-11-18 20:47:38,012 INFO L137 encePairwiseOnDemand]: 543/549 looper letters, 15 selfloop transitions, 8 changer transitions 0/489 dead transitions. [2022-11-18 20:47:38,013 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 495 places, 489 transitions, 1092 flow [2022-11-18 20:47:38,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:47:38,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 20:47:38,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2351 transitions. [2022-11-18 20:47:38,020 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8564663023679417 [2022-11-18 20:47:38,020 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2351 transitions. [2022-11-18 20:47:38,020 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2351 transitions. [2022-11-18 20:47:38,022 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:47:38,023 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2351 transitions. [2022-11-18 20:47:38,029 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 470.2) internal successors, (2351), 5 states have internal predecessors, (2351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:47:38,035 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 549.0) internal successors, (3294), 6 states have internal predecessors, (3294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:47:38,037 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 549.0) internal successors, (3294), 6 states have internal predecessors, (3294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:47:38,037 INFO L175 Difference]: Start difference. First operand has 492 places, 489 transitions, 1048 flow. Second operand 5 states and 2351 transitions. [2022-11-18 20:47:38,037 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 495 places, 489 transitions, 1092 flow [2022-11-18 20:47:38,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 494 places, 489 transitions, 1090 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 20:47:38,051 INFO L231 Difference]: Finished difference. Result has 495 places, 489 transitions, 1066 flow [2022-11-18 20:47:38,052 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=549, PETRI_DIFFERENCE_MINUEND_FLOW=1042, PETRI_DIFFERENCE_MINUEND_PLACES=490, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=488, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=480, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1066, PETRI_PLACES=495, PETRI_TRANSITIONS=489} [2022-11-18 20:47:38,053 INFO L288 CegarLoopForPetriNet]: 490 programPoint places, 5 predicate places. [2022-11-18 20:47:38,054 INFO L495 AbstractCegarLoop]: Abstraction has has 495 places, 489 transitions, 1066 flow [2022-11-18 20:47:38,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 469.75) internal successors, (1879), 4 states have internal predecessors, (1879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:47:38,055 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:47:38,055 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:47:38,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-18 20:47:38,056 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2022-11-18 20:47:38,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:47:38,056 INFO L85 PathProgramCache]: Analyzing trace with hash 1004969724, now seen corresponding path program 1 times [2022-11-18 20:47:38,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:47:38,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145812194] [2022-11-18 20:47:38,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:47:38,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:47:38,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:47:38,218 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:47:38,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:47:38,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145812194] [2022-11-18 20:47:38,219 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145812194] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:47:38,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1787630916] [2022-11-18 20:47:38,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:47:38,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:47:38,220 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dcc321b-0ea8-48a9-b9cf-c4b1a0c55b7f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:47:38,221 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dcc321b-0ea8-48a9-b9cf-c4b1a0c55b7f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:47:38,250 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dcc321b-0ea8-48a9-b9cf-c4b1a0c55b7f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 20:47:38,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:47:38,512 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 20:47:38,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:47:38,604 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:47:38,605 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:47:38,605 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1787630916] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:47:38,605 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:47:38,605 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2022-11-18 20:47:38,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586860875] [2022-11-18 20:47:38,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:47:38,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:47:38,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:47:38,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:47:38,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-18 20:47:38,616 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 466 out of 549 [2022-11-18 20:47:38,621 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 495 places, 489 transitions, 1066 flow. Second operand has 5 states, 5 states have (on average 469.2) internal successors, (2346), 5 states have internal predecessors, (2346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:47:38,621 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:47:38,622 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 466 of 549 [2022-11-18 20:47:38,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:47:39,220 INFO L130 PetriNetUnfolder]: 32/1057 cut-off events. [2022-11-18 20:47:39,220 INFO L131 PetriNetUnfolder]: For 193/407 co-relation queries the response was YES. [2022-11-18 20:47:39,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1231 conditions, 1057 events. 32/1057 cut-off events. For 193/407 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 5460 event pairs, 6 based on Foata normal form. 7/966 useless extension candidates. Maximal degree in co-relation 880. Up to 55 conditions per place. [2022-11-18 20:47:39,268 INFO L137 encePairwiseOnDemand]: 545/549 looper letters, 17 selfloop transitions, 5 changer transitions 0/488 dead transitions. [2022-11-18 20:47:39,268 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 497 places, 488 transitions, 1106 flow [2022-11-18 20:47:39,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:47:39,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-18 20:47:39,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1883 transitions. [2022-11-18 20:47:39,274 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8574681238615665 [2022-11-18 20:47:39,274 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1883 transitions. [2022-11-18 20:47:39,274 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1883 transitions. [2022-11-18 20:47:39,276 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:47:39,276 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1883 transitions. [2022-11-18 20:47:39,281 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 470.75) internal successors, (1883), 4 states have internal predecessors, (1883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:47:39,286 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 549.0) internal successors, (2745), 5 states have internal predecessors, (2745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:47:39,287 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 549.0) internal successors, (2745), 5 states have internal predecessors, (2745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:47:39,287 INFO L175 Difference]: Start difference. First operand has 495 places, 489 transitions, 1066 flow. Second operand 4 states and 1883 transitions. [2022-11-18 20:47:39,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 497 places, 488 transitions, 1106 flow [2022-11-18 20:47:39,292 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 494 places, 488 transitions, 1094 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 20:47:39,299 INFO L231 Difference]: Finished difference. Result has 494 places, 488 transitions, 1060 flow [2022-11-18 20:47:39,300 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=549, PETRI_DIFFERENCE_MINUEND_FLOW=1050, PETRI_DIFFERENCE_MINUEND_PLACES=491, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=488, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=483, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1060, PETRI_PLACES=494, PETRI_TRANSITIONS=488} [2022-11-18 20:47:39,301 INFO L288 CegarLoopForPetriNet]: 490 programPoint places, 4 predicate places. [2022-11-18 20:47:39,301 INFO L495 AbstractCegarLoop]: Abstraction has has 494 places, 488 transitions, 1060 flow [2022-11-18 20:47:39,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 469.2) internal successors, (2346), 5 states have internal predecessors, (2346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:47:39,302 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:47:39,303 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:47:39,316 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dcc321b-0ea8-48a9-b9cf-c4b1a0c55b7f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-18 20:47:39,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dcc321b-0ea8-48a9-b9cf-c4b1a0c55b7f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-18 20:47:39,510 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2022-11-18 20:47:39,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:47:39,511 INFO L85 PathProgramCache]: Analyzing trace with hash -621965500, now seen corresponding path program 1 times [2022-11-18 20:47:39,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:47:39,511 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970821150] [2022-11-18 20:47:39,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:47:39,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:47:39,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:47:41,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:47:41,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:47:41,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970821150] [2022-11-18 20:47:41,680 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970821150] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:47:41,680 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:47:41,680 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2022-11-18 20:47:41,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674368660] [2022-11-18 20:47:41,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:47:41,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-18 20:47:41,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:47:41,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-18 20:47:41,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=513, Unknown=0, NotChecked=0, Total=600 [2022-11-18 20:47:41,691 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 353 out of 549 [2022-11-18 20:47:41,699 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 494 places, 488 transitions, 1060 flow. Second operand has 25 states, 25 states have (on average 355.4) internal successors, (8885), 25 states have internal predecessors, (8885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:47:41,699 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:47:41,699 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 353 of 549 [2022-11-18 20:47:41,700 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand