./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_37-indirect_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f0d5f1c-b436-466b-a15b-972e72625225/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f0d5f1c-b436-466b-a15b-972e72625225/bin/uautomizer-vX5HgA9Q3a/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f0d5f1c-b436-466b-a15b-972e72625225/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f0d5f1c-b436-466b-a15b-972e72625225/bin/uautomizer-vX5HgA9Q3a/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_37-indirect_racing.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f0d5f1c-b436-466b-a15b-972e72625225/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f0d5f1c-b436-466b-a15b-972e72625225/bin/uautomizer-vX5HgA9Q3a --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 78ae3f0dde82ce244d0cacebded5945a3f759d1f5aeba1d4553a1f59ef165385 --- 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-b5237d8 [2022-11-21 17:02:13,363 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 17:02:13,365 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 17:02:13,385 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 17:02:13,386 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 17:02:13,387 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 17:02:13,388 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 17:02:13,390 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 17:02:13,392 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 17:02:13,393 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 17:02:13,394 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 17:02:13,395 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 17:02:13,395 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 17:02:13,397 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 17:02:13,398 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 17:02:13,399 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 17:02:13,400 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 17:02:13,401 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 17:02:13,402 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 17:02:13,404 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 17:02:13,406 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 17:02:13,407 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 17:02:13,408 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 17:02:13,409 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 17:02:13,412 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 17:02:13,413 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 17:02:13,413 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 17:02:13,414 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 17:02:13,415 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 17:02:13,416 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 17:02:13,416 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 17:02:13,417 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 17:02:13,418 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 17:02:13,419 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 17:02:13,420 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 17:02:13,421 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 17:02:13,422 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 17:02:13,422 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 17:02:13,422 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 17:02:13,423 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 17:02:13,424 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 17:02:13,425 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f0d5f1c-b436-466b-a15b-972e72625225/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-21 17:02:13,449 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 17:02:13,450 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 17:02:13,450 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 17:02:13,451 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 17:02:13,451 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 17:02:13,452 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 17:02:13,452 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 17:02:13,453 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 17:02:13,453 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 17:02:13,453 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 17:02:13,454 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-21 17:02:13,454 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-21 17:02:13,454 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 17:02:13,454 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-21 17:02:13,455 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 17:02:13,455 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-21 17:02:13,455 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 17:02:13,455 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-21 17:02:13,456 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-21 17:02:13,456 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-21 17:02:13,456 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-21 17:02:13,456 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 17:02:13,457 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-21 17:02:13,457 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 17:02:13,457 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 17:02:13,458 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 17:02:13,458 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 17:02:13,458 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 17:02:13,458 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 17:02:13,459 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-21 17:02:13,459 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 17:02:13,459 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 17:02:13,459 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-21 17:02:13,460 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-21 17:02:13,460 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-21 17:02:13,460 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_7f0d5f1c-b436-466b-a15b-972e72625225/bin/uautomizer-vX5HgA9Q3a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f0d5f1c-b436-466b-a15b-972e72625225/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 78ae3f0dde82ce244d0cacebded5945a3f759d1f5aeba1d4553a1f59ef165385 [2022-11-21 17:02:13,694 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 17:02:13,722 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 17:02:13,725 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 17:02:13,726 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 17:02:13,727 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 17:02:13,728 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f0d5f1c-b436-466b-a15b-972e72625225/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/goblint-regression/28-race_reach_37-indirect_racing.i [2022-11-21 17:02:16,840 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 17:02:17,069 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 17:02:17,069 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f0d5f1c-b436-466b-a15b-972e72625225/sv-benchmarks/c/goblint-regression/28-race_reach_37-indirect_racing.i [2022-11-21 17:02:17,096 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f0d5f1c-b436-466b-a15b-972e72625225/bin/uautomizer-vX5HgA9Q3a/data/38ed9d5ba/02f3b552ea2241dbb42ae43860bc125d/FLAG6f1c31464 [2022-11-21 17:02:17,112 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f0d5f1c-b436-466b-a15b-972e72625225/bin/uautomizer-vX5HgA9Q3a/data/38ed9d5ba/02f3b552ea2241dbb42ae43860bc125d [2022-11-21 17:02:17,121 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 17:02:17,123 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 17:02:17,127 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 17:02:17,128 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 17:02:17,132 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 17:02:17,133 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 05:02:17" (1/1) ... [2022-11-21 17:02:17,134 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48e15801 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:02:17, skipping insertion in model container [2022-11-21 17:02:17,134 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 05:02:17" (1/1) ... [2022-11-21 17:02:17,142 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 17:02:17,203 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 17:02:17,639 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f0d5f1c-b436-466b-a15b-972e72625225/sv-benchmarks/c/goblint-regression/28-race_reach_37-indirect_racing.i[30176,30189] [2022-11-21 17:02:17,662 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 17:02:17,682 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 17:02:17,733 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f0d5f1c-b436-466b-a15b-972e72625225/sv-benchmarks/c/goblint-regression/28-race_reach_37-indirect_racing.i[30176,30189] [2022-11-21 17:02:17,743 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 17:02:17,797 INFO L208 MainTranslator]: Completed translation [2022-11-21 17:02:17,798 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:02:17 WrapperNode [2022-11-21 17:02:17,798 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 17:02:17,799 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 17:02:17,799 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 17:02:17,800 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 17:02:17,807 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:02:17" (1/1) ... [2022-11-21 17:02:17,839 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:02:17" (1/1) ... [2022-11-21 17:02:17,865 INFO L138 Inliner]: procedures = 170, calls = 36, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 81 [2022-11-21 17:02:17,865 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 17:02:17,866 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 17:02:17,866 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 17:02:17,866 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 17:02:17,879 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:02:17" (1/1) ... [2022-11-21 17:02:17,880 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:02:17" (1/1) ... [2022-11-21 17:02:17,892 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:02:17" (1/1) ... [2022-11-21 17:02:17,892 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:02:17" (1/1) ... [2022-11-21 17:02:17,903 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:02:17" (1/1) ... [2022-11-21 17:02:17,907 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:02:17" (1/1) ... [2022-11-21 17:02:17,908 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:02:17" (1/1) ... [2022-11-21 17:02:17,909 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:02:17" (1/1) ... [2022-11-21 17:02:17,916 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 17:02:17,917 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 17:02:17,917 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 17:02:17,917 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 17:02:17,918 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:02:17" (1/1) ... [2022-11-21 17:02:17,932 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 17:02:17,944 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f0d5f1c-b436-466b-a15b-972e72625225/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:02:17,961 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f0d5f1c-b436-466b-a15b-972e72625225/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 17:02:17,986 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f0d5f1c-b436-466b-a15b-972e72625225/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 17:02:18,008 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-21 17:02:18,009 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-21 17:02:18,009 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-21 17:02:18,009 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-21 17:02:18,009 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-21 17:02:18,009 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-21 17:02:18,010 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-21 17:02:18,010 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-21 17:02:18,010 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-21 17:02:18,010 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 17:02:18,010 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 17:02:18,012 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-21 17:02:18,231 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 17:02:18,233 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 17:02:18,524 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 17:02:18,530 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 17:02:18,531 INFO L300 CfgBuilder]: Removed 10 assume(true) statements. [2022-11-21 17:02:18,533 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 05:02:18 BoogieIcfgContainer [2022-11-21 17:02:18,533 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 17:02:18,536 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 17:02:18,536 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 17:02:18,539 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 17:02:18,539 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 05:02:17" (1/3) ... [2022-11-21 17:02:18,540 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2270a48f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 05:02:18, skipping insertion in model container [2022-11-21 17:02:18,540 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:02:17" (2/3) ... [2022-11-21 17:02:18,541 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2270a48f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 05:02:18, skipping insertion in model container [2022-11-21 17:02:18,541 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 05:02:18" (3/3) ... [2022-11-21 17:02:18,542 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_37-indirect_racing.i [2022-11-21 17:02:18,551 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-21 17:02:18,562 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 17:02:18,562 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-11-21 17:02:18,562 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-21 17:02:18,669 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-11-21 17:02:18,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 120 places, 129 transitions, 266 flow [2022-11-21 17:02:18,820 INFO L130 PetriNetUnfolder]: 17/163 cut-off events. [2022-11-21 17:02:18,820 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-21 17:02:18,827 INFO L83 FinitePrefix]: Finished finitePrefix Result has 169 conditions, 163 events. 17/163 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 392 event pairs, 0 based on Foata normal form. 0/135 useless extension candidates. Maximal degree in co-relation 83. Up to 6 conditions per place. [2022-11-21 17:02:18,827 INFO L82 GeneralOperation]: Start removeDead. Operand has 120 places, 129 transitions, 266 flow [2022-11-21 17:02:18,832 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 118 places, 126 transitions, 260 flow [2022-11-21 17:02:18,842 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 17:02:18,848 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;@547cf7ef, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 17:02:18,849 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2022-11-21 17:02:18,875 INFO L130 PetriNetUnfolder]: 2/70 cut-off events. [2022-11-21 17:02:18,875 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-21 17:02:18,875 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:02:18,876 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] [2022-11-21 17:02:18,877 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-21 17:02:18,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:02:18,882 INFO L85 PathProgramCache]: Analyzing trace with hash 1296693060, now seen corresponding path program 1 times [2022-11-21 17:02:18,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:02:18,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401809948] [2022-11-21 17:02:18,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:02:18,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:02:19,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:02:19,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:02:19,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:02:19,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401809948] [2022-11-21 17:02:19,326 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401809948] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:02:19,326 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:02:19,327 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 17:02:19,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245803932] [2022-11-21 17:02:19,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:02:19,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 17:02:19,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:02:19,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 17:02:19,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 17:02:19,394 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 129 [2022-11-21 17:02:19,400 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 126 transitions, 260 flow. Second operand has 4 states, 4 states have (on average 104.75) internal successors, (419), 4 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:19,400 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:02:19,400 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 129 [2022-11-21 17:02:19,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:02:19,516 INFO L130 PetriNetUnfolder]: 0/116 cut-off events. [2022-11-21 17:02:19,516 INFO L131 PetriNetUnfolder]: For 12/29 co-relation queries the response was YES. [2022-11-21 17:02:19,516 INFO L83 FinitePrefix]: Finished finitePrefix Result has 137 conditions, 116 events. 0/116 cut-off events. For 12/29 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 103 event pairs, 0 based on Foata normal form. 40/148 useless extension candidates. Maximal degree in co-relation 0. Up to 7 conditions per place. [2022-11-21 17:02:19,519 INFO L137 encePairwiseOnDemand]: 111/129 looper letters, 10 selfloop transitions, 4 changer transitions 0/114 dead transitions. [2022-11-21 17:02:19,519 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 114 transitions, 264 flow [2022-11-21 17:02:19,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 17:02:19,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 17:02:19,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 562 transitions. [2022-11-21 17:02:19,542 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8713178294573644 [2022-11-21 17:02:19,543 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 562 transitions. [2022-11-21 17:02:19,544 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 562 transitions. [2022-11-21 17:02:19,548 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:02:19,551 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 562 transitions. [2022-11-21 17:02:19,558 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 112.4) internal successors, (562), 5 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:19,568 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 129.0) internal successors, (774), 6 states have internal predecessors, (774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:19,569 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 129.0) internal successors, (774), 6 states have internal predecessors, (774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:19,571 INFO L175 Difference]: Start difference. First operand has 118 places, 126 transitions, 260 flow. Second operand 5 states and 562 transitions. [2022-11-21 17:02:19,572 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 114 transitions, 264 flow [2022-11-21 17:02:19,577 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 114 transitions, 264 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-21 17:02:19,582 INFO L231 Difference]: Finished difference. Result has 120 places, 112 transitions, 244 flow [2022-11-21 17:02:19,584 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=244, PETRI_PLACES=120, PETRI_TRANSITIONS=112} [2022-11-21 17:02:19,588 INFO L288 CegarLoopForPetriNet]: 118 programPoint places, 2 predicate places. [2022-11-21 17:02:19,588 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 112 transitions, 244 flow [2022-11-21 17:02:19,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 104.75) internal successors, (419), 4 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:19,590 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:02:19,591 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] [2022-11-21 17:02:19,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-21 17:02:19,591 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-21 17:02:19,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:02:19,593 INFO L85 PathProgramCache]: Analyzing trace with hash -877712076, now seen corresponding path program 1 times [2022-11-21 17:02:19,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:02:19,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045652001] [2022-11-21 17:02:19,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:02:19,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:02:19,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:02:20,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:02:20,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:02:20,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045652001] [2022-11-21 17:02:20,372 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045652001] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:02:20,372 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:02:20,372 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-21 17:02:20,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223312397] [2022-11-21 17:02:20,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:02:20,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-21 17:02:20,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:02:20,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-21 17:02:20,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2022-11-21 17:02:20,377 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 129 [2022-11-21 17:02:20,378 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 112 transitions, 244 flow. Second operand has 13 states, 13 states have (on average 68.53846153846153) internal successors, (891), 13 states have internal predecessors, (891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:20,379 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:02:20,379 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 129 [2022-11-21 17:02:20,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:02:20,964 INFO L130 PetriNetUnfolder]: 97/483 cut-off events. [2022-11-21 17:02:20,964 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-21 17:02:20,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 752 conditions, 483 events. 97/483 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 2604 event pairs, 6 based on Foata normal form. 0/447 useless extension candidates. Maximal degree in co-relation 665. Up to 86 conditions per place. [2022-11-21 17:02:20,968 INFO L137 encePairwiseOnDemand]: 113/129 looper letters, 75 selfloop transitions, 23 changer transitions 2/161 dead transitions. [2022-11-21 17:02:20,968 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 161 transitions, 542 flow [2022-11-21 17:02:20,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-21 17:02:20,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-11-21 17:02:20,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1226 transitions. [2022-11-21 17:02:20,998 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5590515275877793 [2022-11-21 17:02:20,998 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1226 transitions. [2022-11-21 17:02:20,999 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1226 transitions. [2022-11-21 17:02:20,999 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:02:21,000 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1226 transitions. [2022-11-21 17:02:21,007 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 72.11764705882354) internal successors, (1226), 17 states have internal predecessors, (1226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:21,011 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 129.0) internal successors, (2322), 18 states have internal predecessors, (2322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:21,013 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 129.0) internal successors, (2322), 18 states have internal predecessors, (2322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:21,013 INFO L175 Difference]: Start difference. First operand has 120 places, 112 transitions, 244 flow. Second operand 17 states and 1226 transitions. [2022-11-21 17:02:21,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 161 transitions, 542 flow [2022-11-21 17:02:21,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 161 transitions, 534 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-21 17:02:21,020 INFO L231 Difference]: Finished difference. Result has 136 places, 121 transitions, 332 flow [2022-11-21 17:02:21,021 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=332, PETRI_PLACES=136, PETRI_TRANSITIONS=121} [2022-11-21 17:02:21,022 INFO L288 CegarLoopForPetriNet]: 118 programPoint places, 18 predicate places. [2022-11-21 17:02:21,022 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 121 transitions, 332 flow [2022-11-21 17:02:21,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 68.53846153846153) internal successors, (891), 13 states have internal predecessors, (891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:21,023 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:02:21,025 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] [2022-11-21 17:02:21,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-21 17:02:21,026 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-21 17:02:21,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:02:21,028 INFO L85 PathProgramCache]: Analyzing trace with hash -464737135, now seen corresponding path program 1 times [2022-11-21 17:02:21,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:02:21,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619441390] [2022-11-21 17:02:21,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:02:21,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:02:21,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 17:02:21,068 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-21 17:02:21,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 17:02:21,124 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-21 17:02:21,124 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-21 17:02:21,126 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2022-11-21 17:02:21,134 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2022-11-21 17:02:21,135 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2022-11-21 17:02:21,136 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2022-11-21 17:02:21,136 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 13 remaining) [2022-11-21 17:02:21,136 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 13 remaining) [2022-11-21 17:02:21,137 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 13 remaining) [2022-11-21 17:02:21,138 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 13 remaining) [2022-11-21 17:02:21,138 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 13 remaining) [2022-11-21 17:02:21,138 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 13 remaining) [2022-11-21 17:02:21,138 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2022-11-21 17:02:21,139 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2022-11-21 17:02:21,139 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2022-11-21 17:02:21,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-21 17:02:21,140 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-11-21 17:02:21,143 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-21 17:02:21,143 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-21 17:02:21,189 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-21 17:02:21,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 157 places, 171 transitions, 360 flow [2022-11-21 17:02:21,241 INFO L130 PetriNetUnfolder]: 31/276 cut-off events. [2022-11-21 17:02:21,242 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-21 17:02:21,248 INFO L83 FinitePrefix]: Finished finitePrefix Result has 290 conditions, 276 events. 31/276 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 836 event pairs, 0 based on Foata normal form. 0/223 useless extension candidates. Maximal degree in co-relation 165. Up to 9 conditions per place. [2022-11-21 17:02:21,248 INFO L82 GeneralOperation]: Start removeDead. Operand has 157 places, 171 transitions, 360 flow [2022-11-21 17:02:21,252 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 157 places, 171 transitions, 360 flow [2022-11-21 17:02:21,254 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 17:02:21,261 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;@547cf7ef, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 17:02:21,261 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2022-11-21 17:02:21,271 INFO L130 PetriNetUnfolder]: 2/70 cut-off events. [2022-11-21 17:02:21,271 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-21 17:02:21,271 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:02:21,271 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] [2022-11-21 17:02:21,272 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-21 17:02:21,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:02:21,272 INFO L85 PathProgramCache]: Analyzing trace with hash 229347756, now seen corresponding path program 1 times [2022-11-21 17:02:21,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:02:21,273 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837550964] [2022-11-21 17:02:21,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:02:21,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:02:21,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:02:21,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:02:21,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:02:21,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837550964] [2022-11-21 17:02:21,366 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837550964] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:02:21,366 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:02:21,367 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 17:02:21,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662281524] [2022-11-21 17:02:21,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:02:21,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 17:02:21,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:02:21,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 17:02:21,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 17:02:21,371 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 171 [2022-11-21 17:02:21,372 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 171 transitions, 360 flow. Second operand has 4 states, 4 states have (on average 138.75) internal successors, (555), 4 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:21,372 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:02:21,372 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 171 [2022-11-21 17:02:21,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:02:21,461 INFO L130 PetriNetUnfolder]: 2/228 cut-off events. [2022-11-21 17:02:21,462 INFO L131 PetriNetUnfolder]: For 45/125 co-relation queries the response was YES. [2022-11-21 17:02:21,462 INFO L83 FinitePrefix]: Finished finitePrefix Result has 271 conditions, 228 events. 2/228 cut-off events. For 45/125 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 530 event pairs, 0 based on Foata normal form. 122/326 useless extension candidates. Maximal degree in co-relation 143. Up to 21 conditions per place. [2022-11-21 17:02:21,464 INFO L137 encePairwiseOnDemand]: 147/171 looper letters, 19 selfloop transitions, 4 changer transitions 0/160 dead transitions. [2022-11-21 17:02:21,464 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 160 transitions, 384 flow [2022-11-21 17:02:21,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 17:02:21,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 17:02:21,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 747 transitions. [2022-11-21 17:02:21,466 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8736842105263158 [2022-11-21 17:02:21,466 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 747 transitions. [2022-11-21 17:02:21,467 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 747 transitions. [2022-11-21 17:02:21,467 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:02:21,467 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 747 transitions. [2022-11-21 17:02:21,470 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 149.4) internal successors, (747), 5 states have internal predecessors, (747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:21,472 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 171.0) internal successors, (1026), 6 states have internal predecessors, (1026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:21,472 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 171.0) internal successors, (1026), 6 states have internal predecessors, (1026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:21,473 INFO L175 Difference]: Start difference. First operand has 157 places, 171 transitions, 360 flow. Second operand 5 states and 747 transitions. [2022-11-21 17:02:21,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 160 transitions, 384 flow [2022-11-21 17:02:21,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 160 transitions, 384 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-21 17:02:21,479 INFO L231 Difference]: Finished difference. Result has 163 places, 156 transitions, 356 flow [2022-11-21 17:02:21,479 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=324, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=356, PETRI_PLACES=163, PETRI_TRANSITIONS=156} [2022-11-21 17:02:21,482 INFO L288 CegarLoopForPetriNet]: 157 programPoint places, 6 predicate places. [2022-11-21 17:02:21,482 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 156 transitions, 356 flow [2022-11-21 17:02:21,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 138.75) internal successors, (555), 4 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:21,486 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:02:21,486 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] [2022-11-21 17:02:21,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-21 17:02:21,487 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-21 17:02:21,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:02:21,488 INFO L85 PathProgramCache]: Analyzing trace with hash -1519396425, now seen corresponding path program 1 times [2022-11-21 17:02:21,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:02:21,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920549766] [2022-11-21 17:02:21,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:02:21,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:02:21,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:02:22,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:02:22,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:02:22,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920549766] [2022-11-21 17:02:22,025 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920549766] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:02:22,025 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:02:22,025 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-21 17:02:22,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585331588] [2022-11-21 17:02:22,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:02:22,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-21 17:02:22,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:02:22,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-21 17:02:22,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2022-11-21 17:02:22,029 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 171 [2022-11-21 17:02:22,031 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 156 transitions, 356 flow. Second operand has 13 states, 13 states have (on average 94.53846153846153) internal successors, (1229), 13 states have internal predecessors, (1229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:22,031 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:02:22,031 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 171 [2022-11-21 17:02:22,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:02:24,067 INFO L130 PetriNetUnfolder]: 2988/8382 cut-off events. [2022-11-21 17:02:24,067 INFO L131 PetriNetUnfolder]: For 144/144 co-relation queries the response was YES. [2022-11-21 17:02:24,090 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13442 conditions, 8382 events. 2988/8382 cut-off events. For 144/144 co-relation queries the response was YES. Maximal size of possible extension queue 331. Compared 84231 event pairs, 728 based on Foata normal form. 0/7724 useless extension candidates. Maximal degree in co-relation 13349. Up to 2582 conditions per place. [2022-11-21 17:02:24,174 INFO L137 encePairwiseOnDemand]: 154/171 looper letters, 190 selfloop transitions, 32 changer transitions 0/317 dead transitions. [2022-11-21 17:02:24,174 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 317 transitions, 1156 flow [2022-11-21 17:02:24,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-21 17:02:24,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-11-21 17:02:24,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1978 transitions. [2022-11-21 17:02:24,179 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6088027085257002 [2022-11-21 17:02:24,180 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1978 transitions. [2022-11-21 17:02:24,180 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1978 transitions. [2022-11-21 17:02:24,181 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:02:24,181 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1978 transitions. [2022-11-21 17:02:24,185 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 104.10526315789474) internal successors, (1978), 19 states have internal predecessors, (1978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:24,190 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 171.0) internal successors, (3420), 20 states have internal predecessors, (3420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:24,192 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 171.0) internal successors, (3420), 20 states have internal predecessors, (3420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:24,192 INFO L175 Difference]: Start difference. First operand has 163 places, 156 transitions, 356 flow. Second operand 19 states and 1978 transitions. [2022-11-21 17:02:24,192 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 317 transitions, 1156 flow [2022-11-21 17:02:24,195 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 317 transitions, 1154 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-21 17:02:24,198 INFO L231 Difference]: Finished difference. Result has 190 places, 184 transitions, 575 flow [2022-11-21 17:02:24,199 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=354, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=575, PETRI_PLACES=190, PETRI_TRANSITIONS=184} [2022-11-21 17:02:24,200 INFO L288 CegarLoopForPetriNet]: 157 programPoint places, 33 predicate places. [2022-11-21 17:02:24,200 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 184 transitions, 575 flow [2022-11-21 17:02:24,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 94.53846153846153) internal successors, (1229), 13 states have internal predecessors, (1229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:24,201 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:02:24,201 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] [2022-11-21 17:02:24,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-21 17:02:24,201 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-21 17:02:24,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:02:24,202 INFO L85 PathProgramCache]: Analyzing trace with hash 81271933, now seen corresponding path program 1 times [2022-11-21 17:02:24,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:02:24,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619229726] [2022-11-21 17:02:24,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:02:24,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:02:24,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:02:24,250 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 17:02:24,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:02:24,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619229726] [2022-11-21 17:02:24,251 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619229726] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:02:24,251 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:02:24,251 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 17:02:24,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769993034] [2022-11-21 17:02:24,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:02:24,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 17:02:24,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:02:24,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 17:02:24,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 17:02:24,254 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 171 [2022-11-21 17:02:24,254 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 184 transitions, 575 flow. Second operand has 4 states, 4 states have (on average 140.75) internal successors, (563), 4 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:24,254 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:02:24,255 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 171 [2022-11-21 17:02:24,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:02:24,406 INFO L130 PetriNetUnfolder]: 57/824 cut-off events. [2022-11-21 17:02:24,407 INFO L131 PetriNetUnfolder]: For 407/586 co-relation queries the response was YES. [2022-11-21 17:02:24,412 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1283 conditions, 824 events. 57/824 cut-off events. For 407/586 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 4984 event pairs, 17 based on Foata normal form. 21/766 useless extension candidates. Maximal degree in co-relation 1121. Up to 74 conditions per place. [2022-11-21 17:02:24,416 INFO L137 encePairwiseOnDemand]: 165/171 looper letters, 11 selfloop transitions, 8 changer transitions 0/184 dead transitions. [2022-11-21 17:02:24,416 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 184 transitions, 611 flow [2022-11-21 17:02:24,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 17:02:24,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 17:02:24,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 702 transitions. [2022-11-21 17:02:24,418 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8210526315789474 [2022-11-21 17:02:24,419 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 702 transitions. [2022-11-21 17:02:24,419 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 702 transitions. [2022-11-21 17:02:24,419 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:02:24,419 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 702 transitions. [2022-11-21 17:02:24,421 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 140.4) internal successors, (702), 5 states have internal predecessors, (702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:24,423 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 171.0) internal successors, (1026), 6 states have internal predecessors, (1026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:24,423 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 171.0) internal successors, (1026), 6 states have internal predecessors, (1026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:24,423 INFO L175 Difference]: Start difference. First operand has 190 places, 184 transitions, 575 flow. Second operand 5 states and 702 transitions. [2022-11-21 17:02:24,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 184 transitions, 611 flow [2022-11-21 17:02:24,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 184 transitions, 604 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-21 17:02:24,433 INFO L231 Difference]: Finished difference. Result has 190 places, 184 transitions, 588 flow [2022-11-21 17:02:24,433 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=564, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=588, PETRI_PLACES=190, PETRI_TRANSITIONS=184} [2022-11-21 17:02:24,434 INFO L288 CegarLoopForPetriNet]: 157 programPoint places, 33 predicate places. [2022-11-21 17:02:24,434 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 184 transitions, 588 flow [2022-11-21 17:02:24,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 140.75) internal successors, (563), 4 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:24,434 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:02:24,435 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] [2022-11-21 17:02:24,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-21 17:02:24,435 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-21 17:02:24,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:02:24,436 INFO L85 PathProgramCache]: Analyzing trace with hash -1775536981, now seen corresponding path program 1 times [2022-11-21 17:02:24,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:02:24,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946607575] [2022-11-21 17:02:24,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:02:24,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:02:24,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:02:24,552 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:02:24,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:02:24,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946607575] [2022-11-21 17:02:24,553 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946607575] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:02:24,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1861198563] [2022-11-21 17:02:24,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:02:24,554 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:02:24,554 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f0d5f1c-b436-466b-a15b-972e72625225/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:02:24,558 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f0d5f1c-b436-466b-a15b-972e72625225/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:02:24,570 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f0d5f1c-b436-466b-a15b-972e72625225/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-21 17:02:24,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:02:24,670 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-21 17:02:24,673 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:02:24,765 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:02:24,765 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 17:02:24,766 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1861198563] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:02:24,766 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 17:02:24,766 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-21 17:02:24,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509654285] [2022-11-21 17:02:24,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:02:24,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 17:02:24,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:02:24,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 17:02:24,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-21 17:02:24,769 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 171 [2022-11-21 17:02:24,771 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 184 transitions, 588 flow. Second operand has 6 states, 6 states have (on average 139.66666666666666) internal successors, (838), 6 states have internal predecessors, (838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:24,771 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:02:24,771 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 171 [2022-11-21 17:02:24,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:02:24,991 INFO L130 PetriNetUnfolder]: 57/823 cut-off events. [2022-11-21 17:02:24,992 INFO L131 PetriNetUnfolder]: For 412/578 co-relation queries the response was YES. [2022-11-21 17:02:24,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1290 conditions, 823 events. 57/823 cut-off events. For 412/578 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 4967 event pairs, 17 based on Foata normal form. 12/756 useless extension candidates. Maximal degree in co-relation 1128. Up to 74 conditions per place. [2022-11-21 17:02:25,002 INFO L137 encePairwiseOnDemand]: 166/171 looper letters, 15 selfloop transitions, 6 changer transitions 0/186 dead transitions. [2022-11-21 17:02:25,002 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 186 transitions, 632 flow [2022-11-21 17:02:25,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 17:02:25,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-21 17:02:25,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 981 transitions. [2022-11-21 17:02:25,006 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8195488721804511 [2022-11-21 17:02:25,006 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 981 transitions. [2022-11-21 17:02:25,006 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 981 transitions. [2022-11-21 17:02:25,007 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:02:25,007 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 981 transitions. [2022-11-21 17:02:25,010 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 140.14285714285714) internal successors, (981), 7 states have internal predecessors, (981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:25,013 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 171.0) internal successors, (1368), 8 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:25,013 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 171.0) internal successors, (1368), 8 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:25,014 INFO L175 Difference]: Start difference. First operand has 190 places, 184 transitions, 588 flow. Second operand 7 states and 981 transitions. [2022-11-21 17:02:25,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 186 transitions, 632 flow [2022-11-21 17:02:25,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 186 transitions, 620 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-21 17:02:25,021 INFO L231 Difference]: Finished difference. Result has 192 places, 183 transitions, 584 flow [2022-11-21 17:02:25,022 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=572, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=584, PETRI_PLACES=192, PETRI_TRANSITIONS=183} [2022-11-21 17:02:25,022 INFO L288 CegarLoopForPetriNet]: 157 programPoint places, 35 predicate places. [2022-11-21 17:02:25,023 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 183 transitions, 584 flow [2022-11-21 17:02:25,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 139.66666666666666) internal successors, (838), 6 states have internal predecessors, (838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:25,024 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:02:25,024 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:02:25,030 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f0d5f1c-b436-466b-a15b-972e72625225/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-21 17:02:25,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f0d5f1c-b436-466b-a15b-972e72625225/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:02:25,230 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-21 17:02:25,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:02:25,230 INFO L85 PathProgramCache]: Analyzing trace with hash 622496626, now seen corresponding path program 1 times [2022-11-21 17:02:25,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:02:25,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129298892] [2022-11-21 17:02:25,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:02:25,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:02:25,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:02:25,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:02:25,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:02:25,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129298892] [2022-11-21 17:02:25,425 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129298892] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:02:25,425 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:02:25,426 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 17:02:25,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461447789] [2022-11-21 17:02:25,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:02:25,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 17:02:25,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:02:25,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 17:02:25,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-21 17:02:25,429 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 171 [2022-11-21 17:02:25,430 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 183 transitions, 584 flow. Second operand has 6 states, 6 states have (on average 114.33333333333333) internal successors, (686), 6 states have internal predecessors, (686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:25,430 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:02:25,430 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 171 [2022-11-21 17:02:25,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:02:26,814 INFO L130 PetriNetUnfolder]: 1616/6556 cut-off events. [2022-11-21 17:02:26,814 INFO L131 PetriNetUnfolder]: For 5644/5948 co-relation queries the response was YES. [2022-11-21 17:02:26,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12202 conditions, 6556 events. 1616/6556 cut-off events. For 5644/5948 co-relation queries the response was YES. Maximal size of possible extension queue 308. Compared 70321 event pairs, 511 based on Foata normal form. 35/5806 useless extension candidates. Maximal degree in co-relation 11507. Up to 1132 conditions per place. [2022-11-21 17:02:26,893 INFO L137 encePairwiseOnDemand]: 158/171 looper letters, 128 selfloop transitions, 34 changer transitions 0/285 dead transitions. [2022-11-21 17:02:26,893 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 285 transitions, 1313 flow [2022-11-21 17:02:26,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-21 17:02:26,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-21 17:02:26,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1353 transitions. [2022-11-21 17:02:26,897 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7192982456140351 [2022-11-21 17:02:26,897 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1353 transitions. [2022-11-21 17:02:26,897 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1353 transitions. [2022-11-21 17:02:26,898 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:02:26,898 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1353 transitions. [2022-11-21 17:02:26,901 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 123.0) internal successors, (1353), 11 states have internal predecessors, (1353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:26,904 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 171.0) internal successors, (2052), 12 states have internal predecessors, (2052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:26,905 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 171.0) internal successors, (2052), 12 states have internal predecessors, (2052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:26,905 INFO L175 Difference]: Start difference. First operand has 192 places, 183 transitions, 584 flow. Second operand 11 states and 1353 transitions. [2022-11-21 17:02:26,905 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 285 transitions, 1313 flow [2022-11-21 17:02:26,928 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 285 transitions, 1302 flow, removed 1 selfloop flow, removed 5 redundant places. [2022-11-21 17:02:26,932 INFO L231 Difference]: Finished difference. Result has 204 places, 210 transitions, 859 flow [2022-11-21 17:02:26,932 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=573, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=859, PETRI_PLACES=204, PETRI_TRANSITIONS=210} [2022-11-21 17:02:26,933 INFO L288 CegarLoopForPetriNet]: 157 programPoint places, 47 predicate places. [2022-11-21 17:02:26,933 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 210 transitions, 859 flow [2022-11-21 17:02:26,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 114.33333333333333) internal successors, (686), 6 states have internal predecessors, (686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:26,934 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:02:26,934 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] [2022-11-21 17:02:26,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-21 17:02:26,934 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-21 17:02:26,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:02:26,935 INFO L85 PathProgramCache]: Analyzing trace with hash 462443950, now seen corresponding path program 1 times [2022-11-21 17:02:26,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:02:26,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083844921] [2022-11-21 17:02:26,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:02:26,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:02:26,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:02:27,386 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-21 17:02:27,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:02:27,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083844921] [2022-11-21 17:02:27,387 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083844921] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:02:27,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [581302015] [2022-11-21 17:02:27,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:02:27,388 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:02:27,388 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f0d5f1c-b436-466b-a15b-972e72625225/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:02:27,389 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f0d5f1c-b436-466b-a15b-972e72625225/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:02:27,414 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f0d5f1c-b436-466b-a15b-972e72625225/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-21 17:02:27,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:02:27,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-21 17:02:27,544 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:02:27,853 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-21 17:02:27,854 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-21 17:02:27,940 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-21 17:02:28,059 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-21 17:02:28,131 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-21 17:02:28,168 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-21 17:02:28,168 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:02:28,258 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_84 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_84) c_~g1~0.base) c_~g1~0.offset) 2147483647)) is different from false [2022-11-21 17:02:28,617 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2022-11-21 17:02:28,623 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-21 17:02:28,653 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-11-21 17:02:28,654 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 12 [2022-11-21 17:02:28,677 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 1 not checked. [2022-11-21 17:02:28,677 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [581302015] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:02:28,678 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 17:02:28,678 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 10] total 30 [2022-11-21 17:02:28,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440214552] [2022-11-21 17:02:28,678 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 17:02:28,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-11-21 17:02:28,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:02:28,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-11-21 17:02:28,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=762, Unknown=3, NotChecked=56, Total=930 [2022-11-21 17:02:28,684 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 171 [2022-11-21 17:02:28,688 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 210 transitions, 859 flow. Second operand has 31 states, 31 states have (on average 94.83870967741936) internal successors, (2940), 31 states have internal predecessors, (2940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:28,689 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:02:28,689 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 171 [2022-11-21 17:02:28,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:02:35,424 INFO L130 PetriNetUnfolder]: 6991/19816 cut-off events. [2022-11-21 17:02:35,425 INFO L131 PetriNetUnfolder]: For 34134/34961 co-relation queries the response was YES. [2022-11-21 17:02:35,536 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47511 conditions, 19816 events. 6991/19816 cut-off events. For 34134/34961 co-relation queries the response was YES. Maximal size of possible extension queue 831. Compared 231516 event pairs, 1123 based on Foata normal form. 190/18742 useless extension candidates. Maximal degree in co-relation 46050. Up to 4338 conditions per place. [2022-11-21 17:02:35,624 INFO L137 encePairwiseOnDemand]: 150/171 looper letters, 362 selfloop transitions, 125 changer transitions 0/600 dead transitions. [2022-11-21 17:02:35,624 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 600 transitions, 3754 flow [2022-11-21 17:02:35,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-21 17:02:35,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-11-21 17:02:35,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 3316 transitions. [2022-11-21 17:02:35,632 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6059941520467836 [2022-11-21 17:02:35,632 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 3316 transitions. [2022-11-21 17:02:35,632 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 3316 transitions. [2022-11-21 17:02:35,635 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:02:35,635 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 3316 transitions. [2022-11-21 17:02:35,646 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 103.625) internal successors, (3316), 32 states have internal predecessors, (3316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:35,656 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 171.0) internal successors, (5643), 33 states have internal predecessors, (5643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:35,659 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 171.0) internal successors, (5643), 33 states have internal predecessors, (5643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:35,659 INFO L175 Difference]: Start difference. First operand has 204 places, 210 transitions, 859 flow. Second operand 32 states and 3316 transitions. [2022-11-21 17:02:35,660 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 600 transitions, 3754 flow [2022-11-21 17:02:36,064 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 600 transitions, 3634 flow, removed 60 selfloop flow, removed 0 redundant places. [2022-11-21 17:02:36,071 INFO L231 Difference]: Finished difference. Result has 252 places, 317 transitions, 2041 flow [2022-11-21 17:02:36,072 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=829, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=2041, PETRI_PLACES=252, PETRI_TRANSITIONS=317} [2022-11-21 17:02:36,073 INFO L288 CegarLoopForPetriNet]: 157 programPoint places, 95 predicate places. [2022-11-21 17:02:36,074 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 317 transitions, 2041 flow [2022-11-21 17:02:36,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 94.83870967741936) internal successors, (2940), 31 states have internal predecessors, (2940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:36,075 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:02:36,075 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] [2022-11-21 17:02:36,086 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f0d5f1c-b436-466b-a15b-972e72625225/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-21 17:02:36,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f0d5f1c-b436-466b-a15b-972e72625225/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:02:36,282 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-21 17:02:36,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:02:36,282 INFO L85 PathProgramCache]: Analyzing trace with hash 2117526760, now seen corresponding path program 1 times [2022-11-21 17:02:36,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:02:36,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622881950] [2022-11-21 17:02:36,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:02:36,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:02:36,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:02:36,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:02:36,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:02:36,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622881950] [2022-11-21 17:02:36,806 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622881950] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:02:36,806 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:02:36,807 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-21 17:02:36,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882616351] [2022-11-21 17:02:36,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:02:36,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-21 17:02:36,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:02:36,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-21 17:02:36,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2022-11-21 17:02:36,809 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 171 [2022-11-21 17:02:36,811 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 317 transitions, 2041 flow. Second operand has 16 states, 16 states have (on average 87.6875) internal successors, (1403), 16 states have internal predecessors, (1403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:36,811 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:02:36,811 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 171 [2022-11-21 17:02:36,811 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:02:44,264 INFO L130 PetriNetUnfolder]: 11318/29216 cut-off events. [2022-11-21 17:02:44,264 INFO L131 PetriNetUnfolder]: For 97682/98670 co-relation queries the response was YES. [2022-11-21 17:02:44,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84171 conditions, 29216 events. 11318/29216 cut-off events. For 97682/98670 co-relation queries the response was YES. Maximal size of possible extension queue 1178. Compared 344294 event pairs, 1953 based on Foata normal form. 498/28454 useless extension candidates. Maximal degree in co-relation 83674. Up to 7643 conditions per place. [2022-11-21 17:02:44,604 INFO L137 encePairwiseOnDemand]: 147/171 looper letters, 491 selfloop transitions, 186 changer transitions 23/807 dead transitions. [2022-11-21 17:02:44,604 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 807 transitions, 6858 flow [2022-11-21 17:02:44,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-21 17:02:44,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-21 17:02:44,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 3453 transitions. [2022-11-21 17:02:44,612 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5769423558897243 [2022-11-21 17:02:44,613 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 3453 transitions. [2022-11-21 17:02:44,613 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 3453 transitions. [2022-11-21 17:02:44,614 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:02:44,614 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 3453 transitions. [2022-11-21 17:02:44,621 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 98.65714285714286) internal successors, (3453), 35 states have internal predecessors, (3453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:44,630 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 171.0) internal successors, (6156), 36 states have internal predecessors, (6156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:44,633 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 171.0) internal successors, (6156), 36 states have internal predecessors, (6156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:44,633 INFO L175 Difference]: Start difference. First operand has 252 places, 317 transitions, 2041 flow. Second operand 35 states and 3453 transitions. [2022-11-21 17:02:44,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 807 transitions, 6858 flow [2022-11-21 17:02:46,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 807 transitions, 6533 flow, removed 159 selfloop flow, removed 4 redundant places. [2022-11-21 17:02:46,082 INFO L231 Difference]: Finished difference. Result has 296 places, 420 transitions, 3483 flow [2022-11-21 17:02:46,082 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=1962, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=3483, PETRI_PLACES=296, PETRI_TRANSITIONS=420} [2022-11-21 17:02:46,083 INFO L288 CegarLoopForPetriNet]: 157 programPoint places, 139 predicate places. [2022-11-21 17:02:46,083 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 420 transitions, 3483 flow [2022-11-21 17:02:46,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 87.6875) internal successors, (1403), 16 states have internal predecessors, (1403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:46,085 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:02:46,085 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] [2022-11-21 17:02:46,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-21 17:02:46,085 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-21 17:02:46,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:02:46,086 INFO L85 PathProgramCache]: Analyzing trace with hash -69480846, now seen corresponding path program 1 times [2022-11-21 17:02:46,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:02:46,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626477359] [2022-11-21 17:02:46,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:02:46,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:02:46,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 17:02:46,106 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-21 17:02:46,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 17:02:46,129 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-21 17:02:46,129 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-21 17:02:46,129 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2022-11-21 17:02:46,130 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2022-11-21 17:02:46,130 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2022-11-21 17:02:46,130 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2022-11-21 17:02:46,130 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2022-11-21 17:02:46,131 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2022-11-21 17:02:46,131 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2022-11-21 17:02:46,131 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2022-11-21 17:02:46,131 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 17 remaining) [2022-11-21 17:02:46,132 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 17 remaining) [2022-11-21 17:02:46,132 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 17 remaining) [2022-11-21 17:02:46,132 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2022-11-21 17:02:46,132 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2022-11-21 17:02:46,132 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2022-11-21 17:02:46,133 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2022-11-21 17:02:46,133 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2022-11-21 17:02:46,133 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2022-11-21 17:02:46,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-21 17:02:46,133 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:02:46,134 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-21 17:02:46,135 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-21 17:02:46,174 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-21 17:02:46,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 194 places, 213 transitions, 456 flow [2022-11-21 17:02:46,257 INFO L130 PetriNetUnfolder]: 50/430 cut-off events. [2022-11-21 17:02:46,257 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-11-21 17:02:46,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 458 conditions, 430 events. 50/430 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1496 event pairs, 1 based on Foata normal form. 0/344 useless extension candidates. Maximal degree in co-relation 284. Up to 16 conditions per place. [2022-11-21 17:02:46,262 INFO L82 GeneralOperation]: Start removeDead. Operand has 194 places, 213 transitions, 456 flow [2022-11-21 17:02:46,268 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 194 places, 213 transitions, 456 flow [2022-11-21 17:02:46,269 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 17:02:46,272 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;@547cf7ef, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 17:02:46,272 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2022-11-21 17:02:46,278 INFO L130 PetriNetUnfolder]: 2/70 cut-off events. [2022-11-21 17:02:46,278 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-21 17:02:46,279 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:02:46,279 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] [2022-11-21 17:02:46,279 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-21 17:02:46,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:02:46,280 INFO L85 PathProgramCache]: Analyzing trace with hash 1075933076, now seen corresponding path program 1 times [2022-11-21 17:02:46,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:02:46,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647529188] [2022-11-21 17:02:46,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:02:46,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:02:46,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:02:46,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:02:46,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:02:46,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647529188] [2022-11-21 17:02:46,375 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647529188] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:02:46,375 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:02:46,375 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 17:02:46,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653049425] [2022-11-21 17:02:46,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:02:46,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 17:02:46,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:02:46,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 17:02:46,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 17:02:46,378 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 213 [2022-11-21 17:02:46,379 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 213 transitions, 456 flow. Second operand has 4 states, 4 states have (on average 172.75) internal successors, (691), 4 states have internal predecessors, (691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:46,382 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:02:46,382 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 213 [2022-11-21 17:02:46,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:02:46,501 INFO L130 PetriNetUnfolder]: 7/367 cut-off events. [2022-11-21 17:02:46,501 INFO L131 PetriNetUnfolder]: For 69/183 co-relation queries the response was YES. [2022-11-21 17:02:46,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 443 conditions, 367 events. 7/367 cut-off events. For 69/183 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1161 event pairs, 1 based on Foata normal form. 298/621 useless extension candidates. Maximal degree in co-relation 265. Up to 40 conditions per place. [2022-11-21 17:02:46,505 INFO L137 encePairwiseOnDemand]: 183/213 looper letters, 21 selfloop transitions, 4 changer transitions 0/196 dead transitions. [2022-11-21 17:02:46,505 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 196 transitions, 472 flow [2022-11-21 17:02:46,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 17:02:46,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 17:02:46,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 925 transitions. [2022-11-21 17:02:46,508 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8685446009389671 [2022-11-21 17:02:46,508 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 925 transitions. [2022-11-21 17:02:46,508 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 925 transitions. [2022-11-21 17:02:46,509 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:02:46,509 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 925 transitions. [2022-11-21 17:02:46,512 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 185.0) internal successors, (925), 5 states have internal predecessors, (925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:46,514 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 213.0) internal successors, (1278), 6 states have internal predecessors, (1278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:46,514 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 213.0) internal successors, (1278), 6 states have internal predecessors, (1278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:46,514 INFO L175 Difference]: Start difference. First operand has 194 places, 213 transitions, 456 flow. Second operand 5 states and 925 transitions. [2022-11-21 17:02:46,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 196 transitions, 472 flow [2022-11-21 17:02:46,516 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 196 transitions, 472 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-21 17:02:46,519 INFO L231 Difference]: Finished difference. Result has 200 places, 192 transitions, 440 flow [2022-11-21 17:02:46,519 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=213, PETRI_DIFFERENCE_MINUEND_FLOW=408, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=440, PETRI_PLACES=200, PETRI_TRANSITIONS=192} [2022-11-21 17:02:46,520 INFO L288 CegarLoopForPetriNet]: 194 programPoint places, 6 predicate places. [2022-11-21 17:02:46,520 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 192 transitions, 440 flow [2022-11-21 17:02:46,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 172.75) internal successors, (691), 4 states have internal predecessors, (691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:46,521 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:02:46,521 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] [2022-11-21 17:02:46,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-21 17:02:46,521 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-21 17:02:46,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:02:46,522 INFO L85 PathProgramCache]: Analyzing trace with hash 1273094324, now seen corresponding path program 1 times [2022-11-21 17:02:46,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:02:46,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008316855] [2022-11-21 17:02:46,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:02:46,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:02:46,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:02:46,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:02:46,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:02:46,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008316855] [2022-11-21 17:02:46,935 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008316855] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:02:46,935 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:02:46,935 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-21 17:02:46,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003268348] [2022-11-21 17:02:46,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:02:46,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-21 17:02:46,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:02:46,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-21 17:02:46,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2022-11-21 17:02:46,939 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 213 [2022-11-21 17:02:46,941 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 192 transitions, 440 flow. Second operand has 13 states, 13 states have (on average 120.53846153846153) internal successors, (1567), 13 states have internal predecessors, (1567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:46,941 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:02:46,942 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 213 [2022-11-21 17:02:46,942 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:03:01,052 INFO L130 PetriNetUnfolder]: 49043/109935 cut-off events. [2022-11-21 17:03:01,052 INFO L131 PetriNetUnfolder]: For 2771/2771 co-relation queries the response was YES. [2022-11-21 17:03:01,411 INFO L83 FinitePrefix]: Finished finitePrefix Result has 180793 conditions, 109935 events. 49043/109935 cut-off events. For 2771/2771 co-relation queries the response was YES. Maximal size of possible extension queue 3406. Compared 1395365 event pairs, 14307 based on Foata normal form. 0/102739 useless extension candidates. Maximal degree in co-relation 180699. Up to 38639 conditions per place. [2022-11-21 17:03:02,146 INFO L137 encePairwiseOnDemand]: 195/213 looper letters, 283 selfloop transitions, 38 changer transitions 0/442 dead transitions. [2022-11-21 17:03:02,147 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 442 transitions, 1667 flow [2022-11-21 17:03:02,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-21 17:03:02,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-11-21 17:03:02,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2571 transitions. [2022-11-21 17:03:02,151 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6352853965900667 [2022-11-21 17:03:02,152 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2571 transitions. [2022-11-21 17:03:02,152 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2571 transitions. [2022-11-21 17:03:02,154 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:03:02,154 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2571 transitions. [2022-11-21 17:03:02,161 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 135.31578947368422) internal successors, (2571), 19 states have internal predecessors, (2571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:03:02,167 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 213.0) internal successors, (4260), 20 states have internal predecessors, (4260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:03:02,168 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 213.0) internal successors, (4260), 20 states have internal predecessors, (4260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:03:02,168 INFO L175 Difference]: Start difference. First operand has 200 places, 192 transitions, 440 flow. Second operand 19 states and 2571 transitions. [2022-11-21 17:03:02,169 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 442 transitions, 1667 flow [2022-11-21 17:03:02,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 442 transitions, 1665 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-21 17:03:02,178 INFO L231 Difference]: Finished difference. Result has 227 places, 226 transitions, 703 flow [2022-11-21 17:03:02,178 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=213, PETRI_DIFFERENCE_MINUEND_FLOW=438, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=703, PETRI_PLACES=227, PETRI_TRANSITIONS=226} [2022-11-21 17:03:02,179 INFO L288 CegarLoopForPetriNet]: 194 programPoint places, 33 predicate places. [2022-11-21 17:03:02,179 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 226 transitions, 703 flow [2022-11-21 17:03:02,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 120.53846153846153) internal successors, (1567), 13 states have internal predecessors, (1567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:03:02,180 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:03:02,180 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] [2022-11-21 17:03:02,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-21 17:03:02,181 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-21 17:03:02,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:03:02,181 INFO L85 PathProgramCache]: Analyzing trace with hash 1174295117, now seen corresponding path program 1 times [2022-11-21 17:03:02,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:03:02,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126553023] [2022-11-21 17:03:02,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:03:02,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:03:02,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:03:02,219 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 17:03:02,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:03:02,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126553023] [2022-11-21 17:03:02,220 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126553023] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:03:02,220 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:03:02,220 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 17:03:02,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002263167] [2022-11-21 17:03:02,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:03:02,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 17:03:02,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:03:02,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 17:03:02,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 17:03:02,225 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 213 [2022-11-21 17:03:02,225 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 226 transitions, 703 flow. Second operand has 4 states, 4 states have (on average 174.75) internal successors, (699), 4 states have internal predecessors, (699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:03:02,226 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:03:02,226 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 213 [2022-11-21 17:03:02,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:03:02,698 INFO L130 PetriNetUnfolder]: 278/2696 cut-off events. [2022-11-21 17:03:02,698 INFO L131 PetriNetUnfolder]: For 1986/2617 co-relation queries the response was YES. [2022-11-21 17:03:02,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4593 conditions, 2696 events. 278/2696 cut-off events. For 1986/2617 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 24972 event pairs, 93 based on Foata normal form. 50/2441 useless extension candidates. Maximal degree in co-relation 4010. Up to 344 conditions per place. [2022-11-21 17:03:02,727 INFO L137 encePairwiseOnDemand]: 207/213 looper letters, 13 selfloop transitions, 8 changer transitions 0/226 dead transitions. [2022-11-21 17:03:02,727 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 226 transitions, 743 flow [2022-11-21 17:03:02,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 17:03:02,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 17:03:02,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 874 transitions. [2022-11-21 17:03:02,730 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8206572769953052 [2022-11-21 17:03:02,730 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 874 transitions. [2022-11-21 17:03:02,730 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 874 transitions. [2022-11-21 17:03:02,730 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:03:02,730 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 874 transitions. [2022-11-21 17:03:02,732 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 174.8) internal successors, (874), 5 states have internal predecessors, (874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:03:02,734 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 213.0) internal successors, (1278), 6 states have internal predecessors, (1278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:03:02,734 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 213.0) internal successors, (1278), 6 states have internal predecessors, (1278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:03:02,734 INFO L175 Difference]: Start difference. First operand has 227 places, 226 transitions, 703 flow. Second operand 5 states and 874 transitions. [2022-11-21 17:03:02,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 226 transitions, 743 flow [2022-11-21 17:03:02,743 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 226 transitions, 736 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-21 17:03:02,746 INFO L231 Difference]: Finished difference. Result has 227 places, 226 transitions, 716 flow [2022-11-21 17:03:02,747 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=213, PETRI_DIFFERENCE_MINUEND_FLOW=692, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=716, PETRI_PLACES=227, PETRI_TRANSITIONS=226} [2022-11-21 17:03:02,747 INFO L288 CegarLoopForPetriNet]: 194 programPoint places, 33 predicate places. [2022-11-21 17:03:02,747 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 226 transitions, 716 flow [2022-11-21 17:03:02,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 174.75) internal successors, (699), 4 states have internal predecessors, (699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:03:02,748 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:03:02,748 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] [2022-11-21 17:03:02,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-21 17:03:02,748 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-21 17:03:02,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:03:02,749 INFO L85 PathProgramCache]: Analyzing trace with hash 2043410864, now seen corresponding path program 1 times [2022-11-21 17:03:02,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:03:02,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276051249] [2022-11-21 17:03:02,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:03:02,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:03:02,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:03:02,818 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:03:02,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:03:02,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276051249] [2022-11-21 17:03:02,818 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276051249] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:03:02,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [239263635] [2022-11-21 17:03:02,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:03:02,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:03:02,819 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f0d5f1c-b436-466b-a15b-972e72625225/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:03:02,820 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f0d5f1c-b436-466b-a15b-972e72625225/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:03:02,827 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f0d5f1c-b436-466b-a15b-972e72625225/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-21 17:03:02,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:03:02,915 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-21 17:03:02,916 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:03:02,968 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:03:02,968 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 17:03:02,968 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [239263635] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:03:02,969 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 17:03:02,969 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-21 17:03:02,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317156922] [2022-11-21 17:03:02,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:03:02,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 17:03:02,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:03:02,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 17:03:02,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-21 17:03:02,972 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 213 [2022-11-21 17:03:02,973 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 226 transitions, 716 flow. Second operand has 6 states, 6 states have (on average 173.66666666666666) internal successors, (1042), 6 states have internal predecessors, (1042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:03:02,973 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:03:02,973 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 213 [2022-11-21 17:03:02,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:03:03,698 INFO L130 PetriNetUnfolder]: 278/2694 cut-off events. [2022-11-21 17:03:03,700 INFO L131 PetriNetUnfolder]: For 1995/2586 co-relation queries the response was YES. [2022-11-21 17:03:03,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4602 conditions, 2694 events. 278/2694 cut-off events. For 1995/2586 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 24958 event pairs, 93 based on Foata normal form. 21/2410 useless extension candidates. Maximal degree in co-relation 4019. Up to 344 conditions per place. [2022-11-21 17:03:03,737 INFO L137 encePairwiseOnDemand]: 208/213 looper letters, 17 selfloop transitions, 6 changer transitions 0/228 dead transitions. [2022-11-21 17:03:03,738 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 228 transitions, 764 flow [2022-11-21 17:03:03,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 17:03:03,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-21 17:03:03,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1221 transitions. [2022-11-21 17:03:03,741 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8189134808853119 [2022-11-21 17:03:03,741 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1221 transitions. [2022-11-21 17:03:03,741 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1221 transitions. [2022-11-21 17:03:03,742 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:03:03,742 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1221 transitions. [2022-11-21 17:03:03,745 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 174.42857142857142) internal successors, (1221), 7 states have internal predecessors, (1221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:03:03,748 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 213.0) internal successors, (1704), 8 states have internal predecessors, (1704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:03:03,748 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 213.0) internal successors, (1704), 8 states have internal predecessors, (1704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:03:03,749 INFO L175 Difference]: Start difference. First operand has 227 places, 226 transitions, 716 flow. Second operand 7 states and 1221 transitions. [2022-11-21 17:03:03,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 228 transitions, 764 flow [2022-11-21 17:03:03,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 228 transitions, 752 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-21 17:03:03,760 INFO L231 Difference]: Finished difference. Result has 229 places, 225 transitions, 712 flow [2022-11-21 17:03:03,761 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=213, PETRI_DIFFERENCE_MINUEND_FLOW=700, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=712, PETRI_PLACES=229, PETRI_TRANSITIONS=225} [2022-11-21 17:03:03,762 INFO L288 CegarLoopForPetriNet]: 194 programPoint places, 35 predicate places. [2022-11-21 17:03:03,762 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 225 transitions, 712 flow [2022-11-21 17:03:03,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 173.66666666666666) internal successors, (1042), 6 states have internal predecessors, (1042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:03:03,763 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:03:03,763 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:03:03,775 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f0d5f1c-b436-466b-a15b-972e72625225/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-21 17:03:03,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f0d5f1c-b436-466b-a15b-972e72625225/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-21 17:03:03,968 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-21 17:03:03,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:03:03,968 INFO L85 PathProgramCache]: Analyzing trace with hash 1356591706, now seen corresponding path program 1 times [2022-11-21 17:03:03,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:03:03,969 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645674105] [2022-11-21 17:03:03,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:03:03,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:03:04,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:03:04,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:03:04,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:03:04,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645674105] [2022-11-21 17:03:04,172 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645674105] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:03:04,172 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:03:04,172 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 17:03:04,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408910501] [2022-11-21 17:03:04,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:03:04,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 17:03:04,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:03:04,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 17:03:04,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-21 17:03:04,176 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 213 [2022-11-21 17:03:04,177 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 225 transitions, 712 flow. Second operand has 6 states, 6 states have (on average 144.33333333333334) internal successors, (866), 6 states have internal predecessors, (866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:03:04,177 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:03:04,178 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 213 [2022-11-21 17:03:04,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:03:13,086 INFO L130 PetriNetUnfolder]: 17012/57156 cut-off events. [2022-11-21 17:03:13,086 INFO L131 PetriNetUnfolder]: For 71944/74631 co-relation queries the response was YES. [2022-11-21 17:03:13,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112558 conditions, 57156 events. 17012/57156 cut-off events. For 71944/74631 co-relation queries the response was YES. Maximal size of possible extension queue 1838. Compared 800292 event pairs, 6005 based on Foata normal form. 208/50891 useless extension candidates. Maximal degree in co-relation 106237. Up to 10223 conditions per place. [2022-11-21 17:03:13,960 INFO L137 encePairwiseOnDemand]: 198/213 looper letters, 186 selfloop transitions, 44 changer transitions 0/383 dead transitions. [2022-11-21 17:03:13,961 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 383 transitions, 1895 flow [2022-11-21 17:03:13,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-21 17:03:13,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-21 17:03:13,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1743 transitions. [2022-11-21 17:03:13,965 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7439180537772087 [2022-11-21 17:03:13,965 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1743 transitions. [2022-11-21 17:03:13,965 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1743 transitions. [2022-11-21 17:03:13,966 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:03:13,966 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1743 transitions. [2022-11-21 17:03:13,969 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 158.45454545454547) internal successors, (1743), 11 states have internal predecessors, (1743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:03:13,973 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 213.0) internal successors, (2556), 12 states have internal predecessors, (2556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:03:13,973 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 213.0) internal successors, (2556), 12 states have internal predecessors, (2556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:03:13,974 INFO L175 Difference]: Start difference. First operand has 229 places, 225 transitions, 712 flow. Second operand 11 states and 1743 transitions. [2022-11-21 17:03:13,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 383 transitions, 1895 flow [2022-11-21 17:03:14,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 383 transitions, 1884 flow, removed 1 selfloop flow, removed 5 redundant places. [2022-11-21 17:03:14,221 INFO L231 Difference]: Finished difference. Result has 241 places, 262 transitions, 1121 flow [2022-11-21 17:03:14,222 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=213, PETRI_DIFFERENCE_MINUEND_FLOW=701, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1121, PETRI_PLACES=241, PETRI_TRANSITIONS=262} [2022-11-21 17:03:14,223 INFO L288 CegarLoopForPetriNet]: 194 programPoint places, 47 predicate places. [2022-11-21 17:03:14,223 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 262 transitions, 1121 flow [2022-11-21 17:03:14,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 144.33333333333334) internal successors, (866), 6 states have internal predecessors, (866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:03:14,224 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:03:14,224 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] [2022-11-21 17:03:14,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-21 17:03:14,225 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-21 17:03:14,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:03:14,225 INFO L85 PathProgramCache]: Analyzing trace with hash -1850805941, now seen corresponding path program 1 times [2022-11-21 17:03:14,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:03:14,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506605805] [2022-11-21 17:03:14,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:03:14,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:03:14,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:03:14,649 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-21 17:03:14,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:03:14,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506605805] [2022-11-21 17:03:14,649 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506605805] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:03:14,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [806921552] [2022-11-21 17:03:14,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:03:14,650 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:03:14,650 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f0d5f1c-b436-466b-a15b-972e72625225/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:03:14,655 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f0d5f1c-b436-466b-a15b-972e72625225/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:03:14,687 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f0d5f1c-b436-466b-a15b-972e72625225/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-21 17:03:14,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:03:14,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-21 17:03:14,767 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:03:15,017 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-21 17:03:15,017 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-21 17:03:15,087 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-21 17:03:15,190 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-21 17:03:15,266 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-21 17:03:15,298 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-21 17:03:15,298 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:03:15,641 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2022-11-21 17:03:15,645 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-21 17:03:15,674 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-11-21 17:03:15,675 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 12 [2022-11-21 17:03:15,698 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-21 17:03:15,698 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [806921552] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:03:15,698 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 17:03:15,699 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 10] total 30 [2022-11-21 17:03:15,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130557154] [2022-11-21 17:03:15,699 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 17:03:15,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-11-21 17:03:15,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:03:15,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-11-21 17:03:15,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=813, Unknown=5, NotChecked=0, Total=930 [2022-11-21 17:03:15,705 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 213 [2022-11-21 17:03:15,708 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 262 transitions, 1121 flow. Second operand has 31 states, 31 states have (on average 120.83870967741936) internal successors, (3746), 31 states have internal predecessors, (3746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:03:15,708 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:03:15,708 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 213 [2022-11-21 17:03:15,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:03:16,506 WARN L837 $PredicateComparison]: unable to prove that (and (= |c_~#g~0.offset| 0) (forall ((|v_ULTIMATE.start_main_~#t_ids~0#1.base_9| Int) (v_ArrVal_172 (Array Int Int))) (or (not (= (select |c_#valid| |v_ULTIMATE.start_main_~#t_ids~0#1.base_9|) 0)) (< (select (select (store |c_#memory_int| |v_ULTIMATE.start_main_~#t_ids~0#1.base_9| v_ArrVal_172) |c_~#g~0.base|) |c_~#g~0.offset|) 2147483647))) (= |c_t_funThread2of3ForFork0_#t~mem5| 0) (forall ((v_ArrVal_172 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_172) c_~g1~0.base) c_~g1~0.offset) 2147483647)) (= |c_~#g~0.base| 4) (forall ((|v_ULTIMATE.start_main_~#t_ids~0#1.base_9| Int)) (or (not (= (select |c_#valid| |v_ULTIMATE.start_main_~#t_ids~0#1.base_9|) 0)) (forall ((v_ArrVal_172 (Array Int Int))) (< (select (select (store |c_#memory_int| |v_ULTIMATE.start_main_~#t_ids~0#1.base_9| v_ArrVal_172) c_~g1~0.base) c_~g1~0.offset) 2147483647)))) (= |c_t_funThread2of3ForFork0_#t~post6| 0) (= (select |c_#valid| 4) 1) (= |c_~#g~0.base| (+ |c_~#__global_lock~0.offset| 4)) (= |c_~#__global_lock~0.offset| 0)) is different from false [2022-11-21 17:03:16,524 WARN L837 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_172 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_172) c_~g1~0.base) c_~g1~0.offset) 2147483647)) (forall ((|v_ULTIMATE.start_main_~#t_ids~0#1.base_9| Int)) (or (not (= (select |c_#valid| |v_ULTIMATE.start_main_~#t_ids~0#1.base_9|) 0)) (forall ((v_ArrVal_172 (Array Int Int))) (< (select (select (store |c_#memory_int| |v_ULTIMATE.start_main_~#t_ids~0#1.base_9| v_ArrVal_172) c_~g1~0.base) c_~g1~0.offset) 2147483647)))) (= |c_t_funThread2of3ForFork0_#t~post6| 0) (= |c_~#g~0.base| (+ |c_~#__global_lock~0.offset| 4)) (forall ((|v_ULTIMATE.start_main_~#t_ids~0#1.base_9| Int) (v_ArrVal_172 (Array Int Int))) (or (not (= (select |c_#valid| |v_ULTIMATE.start_main_~#t_ids~0#1.base_9|) 0)) (< (select (select (store |c_#memory_int| |v_ULTIMATE.start_main_~#t_ids~0#1.base_9| v_ArrVal_172) c_~g2~0.base) c_~g2~0.offset) 2147483647))) (= |c_~#__global_lock~0.offset| 0)) is different from false [2022-11-21 17:03:18,797 WARN L837 $PredicateComparison]: unable to prove that (and (= |c_~#g~0.offset| 0) (= |c_t_funThread2of3ForFork0_#t~mem5| 0) (forall ((v_ArrVal_172 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_172) c_~g1~0.base) c_~g1~0.offset) 2147483647)) (= |c_~#g~0.base| 4) (forall ((|v_ULTIMATE.start_main_~#t_ids~0#1.base_9| Int)) (or (not (= (select |c_#valid| |v_ULTIMATE.start_main_~#t_ids~0#1.base_9|) 0)) (forall ((v_ArrVal_172 (Array Int Int))) (< (select (select (store |c_#memory_int| |v_ULTIMATE.start_main_~#t_ids~0#1.base_9| v_ArrVal_172) c_~g1~0.base) c_~g1~0.offset) 2147483647)))) (= |c_t_funThread2of3ForFork0_#t~post6| 0) (= |c_~#g~0.base| (+ |c_~#__global_lock~0.offset| 4)) (= |c_~#__global_lock~0.offset| 0)) is different from false [2022-11-21 17:03:19,410 WARN L837 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_172 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_172) c_~g1~0.base) c_~g1~0.offset) 2147483647)) (forall ((|v_ULTIMATE.start_main_~#t_ids~0#1.base_9| Int)) (or (not (= (select |c_#valid| |v_ULTIMATE.start_main_~#t_ids~0#1.base_9|) 0)) (forall ((v_ArrVal_172 (Array Int Int))) (< (select (select (store |c_#memory_int| |v_ULTIMATE.start_main_~#t_ids~0#1.base_9| v_ArrVal_172) c_~g1~0.base) c_~g1~0.offset) 2147483647)))) (= |c_t_funThread2of3ForFork0_#t~post6| 0) (= |c_~#g~0.base| (+ |c_~#__global_lock~0.offset| 4)) (= |c_~#__global_lock~0.offset| 0)) is different from false