./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 e04fb08f Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_136b653b-6f1b-45f9-af0c-81029c430099/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_136b653b-6f1b-45f9-af0c-81029c430099/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_136b653b-6f1b-45f9-af0c-81029c430099/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_136b653b-6f1b-45f9-af0c-81029c430099/bin/uautomizer-tPACEb0tL8/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_136b653b-6f1b-45f9-af0c-81029c430099/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_136b653b-6f1b-45f9-af0c-81029c430099/bin/uautomizer-tPACEb0tL8 --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-e04fb08 [2022-11-16 12:35:22,197 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:35:22,200 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:35:22,241 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:35:22,242 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:35:22,246 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:35:22,248 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:35:22,251 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:35:22,256 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:35:22,257 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:35:22,258 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:35:22,259 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:35:22,259 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:35:22,260 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:35:22,262 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:35:22,263 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:35:22,264 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:35:22,265 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:35:22,269 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:35:22,276 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:35:22,280 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:35:22,284 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:35:22,288 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:35:22,289 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:35:22,299 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:35:22,300 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:35:22,300 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:35:22,302 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:35:22,303 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:35:22,304 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:35:22,304 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:35:22,305 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:35:22,307 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:35:22,309 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:35:22,311 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:35:22,311 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:35:22,313 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:35:22,313 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:35:22,314 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:35:22,315 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:35:22,315 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:35:22,316 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_136b653b-6f1b-45f9-af0c-81029c430099/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-16 12:35:22,359 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:35:22,359 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:35:22,360 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:35:22,360 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:35:22,361 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:35:22,362 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:35:22,362 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:35:22,363 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:35:22,363 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:35:22,363 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:35:22,365 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 12:35:22,365 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 12:35:22,365 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 12:35:22,366 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 12:35:22,366 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:35:22,366 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 12:35:22,367 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:35:22,367 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 12:35:22,367 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-16 12:35:22,367 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 12:35:22,368 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 12:35:22,368 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:35:22,368 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 12:35:22,369 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:35:22,369 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:35:22,369 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:35:22,370 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:35:22,370 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:35:22,370 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:35:22,370 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 12:35:22,371 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 12:35:22,371 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 12:35:22,372 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 12:35:22,372 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 12:35:22,372 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 12:35:22,372 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_136b653b-6f1b-45f9-af0c-81029c430099/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_136b653b-6f1b-45f9-af0c-81029c430099/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 78ae3f0dde82ce244d0cacebded5945a3f759d1f5aeba1d4553a1f59ef165385 [2022-11-16 12:35:22,738 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:35:22,782 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:35:22,784 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:35:22,786 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:35:22,787 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:35:22,788 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_136b653b-6f1b-45f9-af0c-81029c430099/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/goblint-regression/28-race_reach_37-indirect_racing.i [2022-11-16 12:35:22,874 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_136b653b-6f1b-45f9-af0c-81029c430099/bin/uautomizer-tPACEb0tL8/data/c9d35ce62/6635a34a61584e5f89b9ada310041799/FLAG70862cbd7 [2022-11-16 12:35:23,451 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:35:23,451 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_136b653b-6f1b-45f9-af0c-81029c430099/sv-benchmarks/c/goblint-regression/28-race_reach_37-indirect_racing.i [2022-11-16 12:35:23,467 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_136b653b-6f1b-45f9-af0c-81029c430099/bin/uautomizer-tPACEb0tL8/data/c9d35ce62/6635a34a61584e5f89b9ada310041799/FLAG70862cbd7 [2022-11-16 12:35:23,733 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_136b653b-6f1b-45f9-af0c-81029c430099/bin/uautomizer-tPACEb0tL8/data/c9d35ce62/6635a34a61584e5f89b9ada310041799 [2022-11-16 12:35:23,737 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:35:23,739 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:35:23,744 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:35:23,744 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:35:23,748 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:35:23,749 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:35:23" (1/1) ... [2022-11-16 12:35:23,751 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@613dffab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:35:23, skipping insertion in model container [2022-11-16 12:35:23,752 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:35:23" (1/1) ... [2022-11-16 12:35:23,760 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:35:23,822 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:35:24,292 WARN L229 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_136b653b-6f1b-45f9-af0c-81029c430099/sv-benchmarks/c/goblint-regression/28-race_reach_37-indirect_racing.i[30176,30189] [2022-11-16 12:35:24,318 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:35:24,336 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 12:35:24,392 WARN L229 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_136b653b-6f1b-45f9-af0c-81029c430099/sv-benchmarks/c/goblint-regression/28-race_reach_37-indirect_racing.i[30176,30189] [2022-11-16 12:35:24,399 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:35:24,445 INFO L208 MainTranslator]: Completed translation [2022-11-16 12:35:24,446 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:35:24 WrapperNode [2022-11-16 12:35:24,446 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:35:24,447 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 12:35:24,447 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 12:35:24,447 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 12:35:24,455 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:35:24" (1/1) ... [2022-11-16 12:35:24,491 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:35:24" (1/1) ... [2022-11-16 12:35:24,510 INFO L138 Inliner]: procedures = 170, calls = 36, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 81 [2022-11-16 12:35:24,511 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 12:35:24,511 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 12:35:24,511 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 12:35:24,511 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 12:35:24,520 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:35:24" (1/1) ... [2022-11-16 12:35:24,521 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:35:24" (1/1) ... [2022-11-16 12:35:24,523 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:35:24" (1/1) ... [2022-11-16 12:35:24,523 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:35:24" (1/1) ... [2022-11-16 12:35:24,529 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:35:24" (1/1) ... [2022-11-16 12:35:24,533 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:35:24" (1/1) ... [2022-11-16 12:35:24,535 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:35:24" (1/1) ... [2022-11-16 12:35:24,536 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:35:24" (1/1) ... [2022-11-16 12:35:24,539 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 12:35:24,540 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 12:35:24,540 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 12:35:24,540 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 12:35:24,549 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:35:24" (1/1) ... [2022-11-16 12:35:24,562 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:35:24,574 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_136b653b-6f1b-45f9-af0c-81029c430099/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:35:24,585 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_136b653b-6f1b-45f9-af0c-81029c430099/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 12:35:24,588 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_136b653b-6f1b-45f9-af0c-81029c430099/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 12:35:24,625 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 12:35:24,625 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 12:35:24,626 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-16 12:35:24,626 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 12:35:24,626 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 12:35:24,626 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-16 12:35:24,626 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-16 12:35:24,627 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 12:35:24,627 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 12:35:24,627 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 12:35:24,627 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 12:35:24,629 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-16 12:35:24,773 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 12:35:24,775 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 12:35:25,136 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 12:35:25,144 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 12:35:25,144 INFO L300 CfgBuilder]: Removed 10 assume(true) statements. [2022-11-16 12:35:25,146 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:35:25 BoogieIcfgContainer [2022-11-16 12:35:25,147 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 12:35:25,149 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 12:35:25,150 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 12:35:25,153 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 12:35:25,154 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:35:23" (1/3) ... [2022-11-16 12:35:25,154 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45069718 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:35:25, skipping insertion in model container [2022-11-16 12:35:25,155 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:35:24" (2/3) ... [2022-11-16 12:35:25,155 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45069718 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:35:25, skipping insertion in model container [2022-11-16 12:35:25,155 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:35:25" (3/3) ... [2022-11-16 12:35:25,157 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_37-indirect_racing.i [2022-11-16 12:35:25,166 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 12:35:25,177 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 12:35:25,178 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-11-16 12:35:25,178 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 12:35:25,235 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-11-16 12:35:25,270 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 120 places, 129 transitions, 266 flow [2022-11-16 12:35:25,368 INFO L130 PetriNetUnfolder]: 17/163 cut-off events. [2022-11-16 12:35:25,369 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-16 12:35:25,374 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. [2022-11-16 12:35:25,375 INFO L82 GeneralOperation]: Start removeDead. Operand has 120 places, 129 transitions, 266 flow [2022-11-16 12:35:25,380 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 118 places, 126 transitions, 260 flow [2022-11-16 12:35:25,391 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:35:25,398 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;@3d3c0ac9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:35:25,398 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2022-11-16 12:35:25,419 INFO L130 PetriNetUnfolder]: 2/70 cut-off events. [2022-11-16 12:35:25,419 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 12:35:25,419 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:35:25,420 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] [2022-11-16 12:35:25,420 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)] === [2022-11-16 12:35:25,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:35:25,426 INFO L85 PathProgramCache]: Analyzing trace with hash 950392762, now seen corresponding path program 1 times [2022-11-16 12:35:25,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:35:25,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272088485] [2022-11-16 12:35:25,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:35:25,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:35:25,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:35:25,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:35:25,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:35:25,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272088485] [2022-11-16 12:35:25,910 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272088485] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:35:25,911 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:35:25,911 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:35:25,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695912866] [2022-11-16 12:35:25,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:35:25,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:35:25,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:35:25,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:35:25,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:35:25,996 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 129 [2022-11-16 12:35:26,000 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) [2022-11-16 12:35:26,000 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:35:26,000 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 129 [2022-11-16 12:35:26,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:35:26,089 INFO L130 PetriNetUnfolder]: 0/116 cut-off events. [2022-11-16 12:35:26,089 INFO L131 PetriNetUnfolder]: For 12/29 co-relation queries the response was YES. [2022-11-16 12:35:26,089 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 104 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. [2022-11-16 12:35:26,091 INFO L137 encePairwiseOnDemand]: 111/129 looper letters, 10 selfloop transitions, 4 changer transitions 0/114 dead transitions. [2022-11-16 12:35:26,091 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 114 transitions, 264 flow [2022-11-16 12:35:26,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:35:26,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 12:35:26,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 562 transitions. [2022-11-16 12:35:26,126 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8713178294573644 [2022-11-16 12:35:26,127 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 562 transitions. [2022-11-16 12:35:26,128 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 562 transitions. [2022-11-16 12:35:26,131 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:35:26,133 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 562 transitions. [2022-11-16 12:35:26,156 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) [2022-11-16 12:35:26,172 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) [2022-11-16 12:35:26,173 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) [2022-11-16 12:35:26,176 INFO L175 Difference]: Start difference. First operand has 118 places, 126 transitions, 260 flow. Second operand 5 states and 562 transitions. [2022-11-16 12:35:26,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 114 transitions, 264 flow [2022-11-16 12:35:26,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 114 transitions, 264 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 12:35:26,186 INFO L231 Difference]: Finished difference. Result has 120 places, 112 transitions, 244 flow [2022-11-16 12:35:26,189 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} [2022-11-16 12:35:26,197 INFO L288 CegarLoopForPetriNet]: 118 programPoint places, 2 predicate places. [2022-11-16 12:35:26,198 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 112 transitions, 244 flow [2022-11-16 12:35:26,199 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) [2022-11-16 12:35:26,200 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:35:26,200 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] [2022-11-16 12:35:26,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 12:35:26,201 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)] === [2022-11-16 12:35:26,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:35:26,201 INFO L85 PathProgramCache]: Analyzing trace with hash -1825248451, now seen corresponding path program 1 times [2022-11-16 12:35:26,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:35:26,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078354461] [2022-11-16 12:35:26,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:35:26,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:35:26,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:35:27,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:35:27,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:35:27,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078354461] [2022-11-16 12:35:27,127 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078354461] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:35:27,128 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:35:27,128 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-16 12:35:27,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508104872] [2022-11-16 12:35:27,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:35:27,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-16 12:35:27,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:35:27,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-16 12:35:27,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2022-11-16 12:35:27,141 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 129 [2022-11-16 12:35:27,143 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) [2022-11-16 12:35:27,143 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:35:27,143 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 129 [2022-11-16 12:35:27,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:35:27,919 INFO L130 PetriNetUnfolder]: 97/483 cut-off events. [2022-11-16 12:35:27,919 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-16 12:35:27,926 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 2603 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. [2022-11-16 12:35:27,929 INFO L137 encePairwiseOnDemand]: 113/129 looper letters, 75 selfloop transitions, 23 changer transitions 2/161 dead transitions. [2022-11-16 12:35:27,930 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 161 transitions, 542 flow [2022-11-16 12:35:27,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-16 12:35:27,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-11-16 12:35:27,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1226 transitions. [2022-11-16 12:35:27,940 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5590515275877793 [2022-11-16 12:35:27,940 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1226 transitions. [2022-11-16 12:35:27,940 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1226 transitions. [2022-11-16 12:35:27,943 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:35:27,944 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1226 transitions. [2022-11-16 12:35:27,948 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) [2022-11-16 12:35:27,954 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) [2022-11-16 12:35:27,956 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) [2022-11-16 12:35:27,956 INFO L175 Difference]: Start difference. First operand has 120 places, 112 transitions, 244 flow. Second operand 17 states and 1226 transitions. [2022-11-16 12:35:27,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 161 transitions, 542 flow [2022-11-16 12:35:27,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 161 transitions, 534 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-16 12:35:27,962 INFO L231 Difference]: Finished difference. Result has 136 places, 121 transitions, 332 flow [2022-11-16 12:35:27,962 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} [2022-11-16 12:35:27,963 INFO L288 CegarLoopForPetriNet]: 118 programPoint places, 18 predicate places. [2022-11-16 12:35:27,963 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 121 transitions, 332 flow [2022-11-16 12:35:27,964 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) [2022-11-16 12:35:27,964 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:35:27,964 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] [2022-11-16 12:35:27,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 12:35:27,965 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)] === [2022-11-16 12:35:27,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:35:27,969 INFO L85 PathProgramCache]: Analyzing trace with hash 466644997, now seen corresponding path program 1 times [2022-11-16 12:35:27,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:35:27,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293479825] [2022-11-16 12:35:27,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:35:27,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:35:28,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:35:28,013 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 12:35:28,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:35:28,076 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 12:35:28,076 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-16 12:35:28,077 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2022-11-16 12:35:28,080 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2022-11-16 12:35:28,081 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2022-11-16 12:35:28,081 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2022-11-16 12:35:28,082 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 13 remaining) [2022-11-16 12:35:28,082 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 13 remaining) [2022-11-16 12:35:28,083 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 13 remaining) [2022-11-16 12:35:28,083 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 13 remaining) [2022-11-16 12:35:28,084 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 13 remaining) [2022-11-16 12:35:28,084 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 13 remaining) [2022-11-16 12:35:28,085 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2022-11-16 12:35:28,085 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2022-11-16 12:35:28,085 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2022-11-16 12:35:28,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 12:35:28,086 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-11-16 12:35:28,090 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-16 12:35:28,090 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-16 12:35:28,143 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-16 12:35:28,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 157 places, 171 transitions, 360 flow [2022-11-16 12:35:28,209 INFO L130 PetriNetUnfolder]: 31/276 cut-off events. [2022-11-16 12:35:28,210 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-16 12:35:28,212 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 837 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. [2022-11-16 12:35:28,213 INFO L82 GeneralOperation]: Start removeDead. Operand has 157 places, 171 transitions, 360 flow [2022-11-16 12:35:28,217 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 157 places, 171 transitions, 360 flow [2022-11-16 12:35:28,228 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:35:28,229 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;@3d3c0ac9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:35:28,229 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2022-11-16 12:35:28,241 INFO L130 PetriNetUnfolder]: 2/70 cut-off events. [2022-11-16 12:35:28,241 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 12:35:28,241 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:35:28,242 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] [2022-11-16 12:35:28,242 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)] === [2022-11-16 12:35:28,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:35:28,243 INFO L85 PathProgramCache]: Analyzing trace with hash -116952542, now seen corresponding path program 1 times [2022-11-16 12:35:28,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:35:28,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704976367] [2022-11-16 12:35:28,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:35:28,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:35:28,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:35:28,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:35:28,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:35:28,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704976367] [2022-11-16 12:35:28,368 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704976367] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:35:28,368 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:35:28,369 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:35:28,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374874709] [2022-11-16 12:35:28,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:35:28,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:35:28,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:35:28,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:35:28,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:35:28,372 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 171 [2022-11-16 12:35:28,374 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) [2022-11-16 12:35:28,374 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:35:28,374 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 171 [2022-11-16 12:35:28,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:35:28,473 INFO L130 PetriNetUnfolder]: 2/228 cut-off events. [2022-11-16 12:35:28,473 INFO L131 PetriNetUnfolder]: For 45/125 co-relation queries the response was YES. [2022-11-16 12:35:28,474 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 531 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. [2022-11-16 12:35:28,475 INFO L137 encePairwiseOnDemand]: 147/171 looper letters, 19 selfloop transitions, 4 changer transitions 0/160 dead transitions. [2022-11-16 12:35:28,475 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 160 transitions, 384 flow [2022-11-16 12:35:28,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:35:28,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 12:35:28,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 747 transitions. [2022-11-16 12:35:28,478 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8736842105263158 [2022-11-16 12:35:28,478 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 747 transitions. [2022-11-16 12:35:28,478 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 747 transitions. [2022-11-16 12:35:28,479 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:35:28,479 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 747 transitions. [2022-11-16 12:35:28,482 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) [2022-11-16 12:35:28,484 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) [2022-11-16 12:35:28,485 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) [2022-11-16 12:35:28,485 INFO L175 Difference]: Start difference. First operand has 157 places, 171 transitions, 360 flow. Second operand 5 states and 747 transitions. [2022-11-16 12:35:28,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 160 transitions, 384 flow [2022-11-16 12:35:28,488 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 160 transitions, 384 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 12:35:28,492 INFO L231 Difference]: Finished difference. Result has 163 places, 156 transitions, 356 flow [2022-11-16 12:35:28,493 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} [2022-11-16 12:35:28,495 INFO L288 CegarLoopForPetriNet]: 157 programPoint places, 6 predicate places. [2022-11-16 12:35:28,497 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 156 transitions, 356 flow [2022-11-16 12:35:28,501 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) [2022-11-16 12:35:28,501 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:35:28,501 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] [2022-11-16 12:35:28,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 12:35:28,502 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)] === [2022-11-16 12:35:28,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:35:28,503 INFO L85 PathProgramCache]: Analyzing trace with hash 1828034496, now seen corresponding path program 1 times [2022-11-16 12:35:28,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:35:28,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925533171] [2022-11-16 12:35:28,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:35:28,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:35:28,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:35:28,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:35:28,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:35:28,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925533171] [2022-11-16 12:35:28,975 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925533171] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:35:28,975 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:35:28,975 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-16 12:35:28,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974269401] [2022-11-16 12:35:28,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:35:28,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-16 12:35:28,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:35:28,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-16 12:35:28,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2022-11-16 12:35:28,979 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 171 [2022-11-16 12:35:28,981 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) [2022-11-16 12:35:28,981 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:35:28,981 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 171 [2022-11-16 12:35:28,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:35:31,139 INFO L130 PetriNetUnfolder]: 2988/8382 cut-off events. [2022-11-16 12:35:31,140 INFO L131 PetriNetUnfolder]: For 144/144 co-relation queries the response was YES. [2022-11-16 12:35:31,171 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 84401 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. [2022-11-16 12:35:31,211 INFO L137 encePairwiseOnDemand]: 154/171 looper letters, 190 selfloop transitions, 32 changer transitions 0/317 dead transitions. [2022-11-16 12:35:31,211 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 317 transitions, 1156 flow [2022-11-16 12:35:31,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-16 12:35:31,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-11-16 12:35:31,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1978 transitions. [2022-11-16 12:35:31,217 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6088027085257002 [2022-11-16 12:35:31,217 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1978 transitions. [2022-11-16 12:35:31,217 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1978 transitions. [2022-11-16 12:35:31,218 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:35:31,219 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1978 transitions. [2022-11-16 12:35:31,223 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) [2022-11-16 12:35:31,229 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) [2022-11-16 12:35:31,230 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) [2022-11-16 12:35:31,231 INFO L175 Difference]: Start difference. First operand has 163 places, 156 transitions, 356 flow. Second operand 19 states and 1978 transitions. [2022-11-16 12:35:31,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 317 transitions, 1156 flow [2022-11-16 12:35:31,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 317 transitions, 1154 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 12:35:31,238 INFO L231 Difference]: Finished difference. Result has 190 places, 184 transitions, 575 flow [2022-11-16 12:35:31,239 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} [2022-11-16 12:35:31,240 INFO L288 CegarLoopForPetriNet]: 157 programPoint places, 33 predicate places. [2022-11-16 12:35:31,240 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 184 transitions, 575 flow [2022-11-16 12:35:31,240 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) [2022-11-16 12:35:31,241 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:35:31,241 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:35:31,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 12:35:31,241 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)] === [2022-11-16 12:35:31,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:35:31,242 INFO L85 PathProgramCache]: Analyzing trace with hash -2061171184, now seen corresponding path program 1 times [2022-11-16 12:35:31,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:35:31,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035179118] [2022-11-16 12:35:31,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:35:31,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:35:31,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:35:31,371 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:35:31,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:35:31,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035179118] [2022-11-16 12:35:31,372 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035179118] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:35:31,372 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:35:31,372 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:35:31,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034121723] [2022-11-16 12:35:31,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:35:31,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:35:31,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:35:31,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:35:31,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:35:31,374 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 171 [2022-11-16 12:35:31,375 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) [2022-11-16 12:35:31,375 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:35:31,375 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 171 [2022-11-16 12:35:31,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:35:31,554 INFO L130 PetriNetUnfolder]: 57/824 cut-off events. [2022-11-16 12:35:31,555 INFO L131 PetriNetUnfolder]: For 407/586 co-relation queries the response was YES. [2022-11-16 12:35:31,560 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 4997 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. [2022-11-16 12:35:31,564 INFO L137 encePairwiseOnDemand]: 165/171 looper letters, 11 selfloop transitions, 8 changer transitions 0/184 dead transitions. [2022-11-16 12:35:31,565 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 184 transitions, 611 flow [2022-11-16 12:35:31,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:35:31,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 12:35:31,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 702 transitions. [2022-11-16 12:35:31,567 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8210526315789474 [2022-11-16 12:35:31,567 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 702 transitions. [2022-11-16 12:35:31,567 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 702 transitions. [2022-11-16 12:35:31,568 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:35:31,568 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 702 transitions. [2022-11-16 12:35:31,570 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) [2022-11-16 12:35:31,572 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) [2022-11-16 12:35:31,572 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) [2022-11-16 12:35:31,572 INFO L175 Difference]: Start difference. First operand has 190 places, 184 transitions, 575 flow. Second operand 5 states and 702 transitions. [2022-11-16 12:35:31,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 184 transitions, 611 flow [2022-11-16 12:35:31,580 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 184 transitions, 604 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-16 12:35:31,582 INFO L231 Difference]: Finished difference. Result has 190 places, 184 transitions, 588 flow [2022-11-16 12:35:31,583 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} [2022-11-16 12:35:31,584 INFO L288 CegarLoopForPetriNet]: 157 programPoint places, 33 predicate places. [2022-11-16 12:35:31,584 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 184 transitions, 588 flow [2022-11-16 12:35:31,584 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) [2022-11-16 12:35:31,584 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:35:31,585 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] [2022-11-16 12:35:31,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 12:35:31,585 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)] === [2022-11-16 12:35:31,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:35:31,585 INFO L85 PathProgramCache]: Analyzing trace with hash 528203129, now seen corresponding path program 1 times [2022-11-16 12:35:31,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:35:31,586 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409846334] [2022-11-16 12:35:31,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:35:31,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:35:31,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:35:31,684 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:35:31,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:35:31,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409846334] [2022-11-16 12:35:31,685 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409846334] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:35:31,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [304399504] [2022-11-16 12:35:31,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:35:31,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:35:31,685 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_136b653b-6f1b-45f9-af0c-81029c430099/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:35:31,690 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_136b653b-6f1b-45f9-af0c-81029c430099/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:35:31,706 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_136b653b-6f1b-45f9-af0c-81029c430099/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 12:35:31,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:35:31,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 12:35:31,793 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:35:31,912 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:35:31,913 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:35:31,913 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [304399504] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:35:31,913 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:35:31,914 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-16 12:35:31,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955506496] [2022-11-16 12:35:31,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:35:31,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:35:31,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:35:31,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:35:31,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:35:31,919 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 171 [2022-11-16 12:35:31,921 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) [2022-11-16 12:35:31,921 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:35:31,921 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 171 [2022-11-16 12:35:31,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:35:32,161 INFO L130 PetriNetUnfolder]: 57/823 cut-off events. [2022-11-16 12:35:32,162 INFO L131 PetriNetUnfolder]: For 412/578 co-relation queries the response was YES. [2022-11-16 12:35:32,167 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 4964 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. [2022-11-16 12:35:32,171 INFO L137 encePairwiseOnDemand]: 166/171 looper letters, 15 selfloop transitions, 6 changer transitions 0/186 dead transitions. [2022-11-16 12:35:32,171 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 186 transitions, 632 flow [2022-11-16 12:35:32,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:35:32,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 12:35:32,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 981 transitions. [2022-11-16 12:35:32,174 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8195488721804511 [2022-11-16 12:35:32,174 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 981 transitions. [2022-11-16 12:35:32,174 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 981 transitions. [2022-11-16 12:35:32,175 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:35:32,175 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 981 transitions. [2022-11-16 12:35:32,177 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) [2022-11-16 12:35:32,180 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) [2022-11-16 12:35:32,181 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) [2022-11-16 12:35:32,181 INFO L175 Difference]: Start difference. First operand has 190 places, 184 transitions, 588 flow. Second operand 7 states and 981 transitions. [2022-11-16 12:35:32,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 186 transitions, 632 flow [2022-11-16 12:35:32,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 186 transitions, 620 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 12:35:32,189 INFO L231 Difference]: Finished difference. Result has 192 places, 183 transitions, 584 flow [2022-11-16 12:35:32,189 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} [2022-11-16 12:35:32,190 INFO L288 CegarLoopForPetriNet]: 157 programPoint places, 35 predicate places. [2022-11-16 12:35:32,190 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 183 transitions, 584 flow [2022-11-16 12:35:32,190 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) [2022-11-16 12:35:32,191 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:35:32,191 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] [2022-11-16 12:35:32,202 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_136b653b-6f1b-45f9-af0c-81029c430099/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 12:35:32,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_136b653b-6f1b-45f9-af0c-81029c430099/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-16 12:35:32,397 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)] === [2022-11-16 12:35:32,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:35:32,397 INFO L85 PathProgramCache]: Analyzing trace with hash 108060105, now seen corresponding path program 1 times [2022-11-16 12:35:32,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:35:32,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055209449] [2022-11-16 12:35:32,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:35:32,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:35:32,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:35:32,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:35:32,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:35:32,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055209449] [2022-11-16 12:35:32,604 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055209449] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:35:32,604 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:35:32,604 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:35:32,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880081576] [2022-11-16 12:35:32,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:35:32,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:35:32,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:35:32,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:35:32,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:35:32,607 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 171 [2022-11-16 12:35:32,608 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) [2022-11-16 12:35:32,608 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:35:32,609 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 171 [2022-11-16 12:35:32,609 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:35:34,130 INFO L130 PetriNetUnfolder]: 1616/6556 cut-off events. [2022-11-16 12:35:34,130 INFO L131 PetriNetUnfolder]: For 5587/5891 co-relation queries the response was YES. [2022-11-16 12:35:34,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12202 conditions, 6556 events. 1616/6556 cut-off events. For 5587/5891 co-relation queries the response was YES. Maximal size of possible extension queue 308. Compared 70302 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. [2022-11-16 12:35:34,200 INFO L137 encePairwiseOnDemand]: 158/171 looper letters, 128 selfloop transitions, 34 changer transitions 0/285 dead transitions. [2022-11-16 12:35:34,200 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 285 transitions, 1313 flow [2022-11-16 12:35:34,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 12:35:34,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-16 12:35:34,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1353 transitions. [2022-11-16 12:35:34,205 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7192982456140351 [2022-11-16 12:35:34,205 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1353 transitions. [2022-11-16 12:35:34,205 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1353 transitions. [2022-11-16 12:35:34,206 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:35:34,206 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1353 transitions. [2022-11-16 12:35:34,209 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) [2022-11-16 12:35:34,213 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) [2022-11-16 12:35:34,214 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) [2022-11-16 12:35:34,214 INFO L175 Difference]: Start difference. First operand has 192 places, 183 transitions, 584 flow. Second operand 11 states and 1353 transitions. [2022-11-16 12:35:34,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 285 transitions, 1313 flow [2022-11-16 12:35:34,240 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 285 transitions, 1302 flow, removed 1 selfloop flow, removed 5 redundant places. [2022-11-16 12:35:34,245 INFO L231 Difference]: Finished difference. Result has 204 places, 210 transitions, 859 flow [2022-11-16 12:35:34,246 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} [2022-11-16 12:35:34,247 INFO L288 CegarLoopForPetriNet]: 157 programPoint places, 47 predicate places. [2022-11-16 12:35:34,249 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 210 transitions, 859 flow [2022-11-16 12:35:34,250 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) [2022-11-16 12:35:34,250 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:35:34,250 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] [2022-11-16 12:35:34,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 12:35:34,251 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)] === [2022-11-16 12:35:34,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:35:34,252 INFO L85 PathProgramCache]: Analyzing trace with hash 1239364794, now seen corresponding path program 1 times [2022-11-16 12:35:34,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:35:34,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820761774] [2022-11-16 12:35:34,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:35:34,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:35:34,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:35:34,812 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-16 12:35:34,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:35:34,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820761774] [2022-11-16 12:35:34,813 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820761774] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:35:34,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1209948435] [2022-11-16 12:35:34,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:35:34,813 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:35:34,813 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_136b653b-6f1b-45f9-af0c-81029c430099/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:35:34,829 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_136b653b-6f1b-45f9-af0c-81029c430099/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:35:34,850 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_136b653b-6f1b-45f9-af0c-81029c430099/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 12:35:34,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:35:34,938 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-16 12:35:34,943 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:35:35,307 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-16 12:35:35,308 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 [2022-11-16 12:35:35,393 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 [2022-11-16 12:35:35,516 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 [2022-11-16 12:35:35,598 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 [2022-11-16 12:35:35,635 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-16 12:35:35,636 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:35:35,724 WARN L833 $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 [2022-11-16 12:35:36,157 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 [2022-11-16 12:35:36,172 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 [2022-11-16 12:35:36,206 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-11-16 12:35:36,206 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 [2022-11-16 12:35:36,230 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 1 not checked. [2022-11-16 12:35:36,231 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1209948435] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:35:36,231 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:35:36,231 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 10] total 30 [2022-11-16 12:35:36,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994705094] [2022-11-16 12:35:36,231 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:35:36,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-11-16 12:35:36,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:35:36,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-11-16 12:35:36,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=761, Unknown=4, NotChecked=56, Total=930 [2022-11-16 12:35:36,235 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 171 [2022-11-16 12:35:36,239 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) [2022-11-16 12:35:36,239 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:35:36,239 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 171 [2022-11-16 12:35:36,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:35:42,305 INFO L130 PetriNetUnfolder]: 6997/19952 cut-off events. [2022-11-16 12:35:42,305 INFO L131 PetriNetUnfolder]: For 34187/35013 co-relation queries the response was YES. [2022-11-16 12:35:42,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47763 conditions, 19952 events. 6997/19952 cut-off events. For 34187/35013 co-relation queries the response was YES. Maximal size of possible extension queue 833. Compared 233378 event pairs, 1119 based on Foata normal form. 188/18884 useless extension candidates. Maximal degree in co-relation 46302. Up to 4338 conditions per place. [2022-11-16 12:35:42,572 INFO L137 encePairwiseOnDemand]: 148/171 looper letters, 350 selfloop transitions, 123 changer transitions 0/586 dead transitions. [2022-11-16 12:35:42,572 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 586 transitions, 3665 flow [2022-11-16 12:35:42,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-16 12:35:42,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-11-16 12:35:42,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 3305 transitions. [2022-11-16 12:35:42,583 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6039839181286549 [2022-11-16 12:35:42,583 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 3305 transitions. [2022-11-16 12:35:42,583 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 3305 transitions. [2022-11-16 12:35:42,586 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:35:42,586 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 3305 transitions. [2022-11-16 12:35:42,598 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 103.28125) internal successors, (3305), 32 states have internal predecessors, (3305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:35:42,794 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) [2022-11-16 12:35:42,796 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) [2022-11-16 12:35:42,796 INFO L175 Difference]: Start difference. First operand has 204 places, 210 transitions, 859 flow. Second operand 32 states and 3305 transitions. [2022-11-16 12:35:42,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 586 transitions, 3665 flow [2022-11-16 12:35:43,031 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 586 transitions, 3545 flow, removed 60 selfloop flow, removed 0 redundant places. [2022-11-16 12:35:43,038 INFO L231 Difference]: Finished difference. Result has 249 places, 315 transitions, 1980 flow [2022-11-16 12:35:43,038 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=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=1980, PETRI_PLACES=249, PETRI_TRANSITIONS=315} [2022-11-16 12:35:43,039 INFO L288 CegarLoopForPetriNet]: 157 programPoint places, 92 predicate places. [2022-11-16 12:35:43,039 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 315 transitions, 1980 flow [2022-11-16 12:35:43,040 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) [2022-11-16 12:35:43,040 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:35:43,041 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] [2022-11-16 12:35:43,054 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_136b653b-6f1b-45f9-af0c-81029c430099/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 12:35:43,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_136b653b-6f1b-45f9-af0c-81029c430099/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:35:43,246 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)] === [2022-11-16 12:35:43,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:35:43,247 INFO L85 PathProgramCache]: Analyzing trace with hash -945103503, now seen corresponding path program 1 times [2022-11-16 12:35:43,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:35:43,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622757067] [2022-11-16 12:35:43,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:35:43,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:35:43,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:35:43,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:35:43,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:35:43,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622757067] [2022-11-16 12:35:43,773 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622757067] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:35:43,773 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:35:43,773 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-16 12:35:43,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897462857] [2022-11-16 12:35:43,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:35:43,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-16 12:35:43,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:35:43,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-16 12:35:43,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2022-11-16 12:35:43,776 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 171 [2022-11-16 12:35:43,778 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 315 transitions, 1980 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) [2022-11-16 12:35:43,778 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:35:43,778 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 171 [2022-11-16 12:35:43,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:35:50,471 INFO L130 PetriNetUnfolder]: 11396/29201 cut-off events. [2022-11-16 12:35:50,471 INFO L131 PetriNetUnfolder]: For 91803/92772 co-relation queries the response was YES. [2022-11-16 12:35:50,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84203 conditions, 29201 events. 11396/29201 cut-off events. For 91803/92772 co-relation queries the response was YES. Maximal size of possible extension queue 1187. Compared 343463 event pairs, 1954 based on Foata normal form. 552/28624 useless extension candidates. Maximal degree in co-relation 83646. Up to 7712 conditions per place. [2022-11-16 12:35:51,010 INFO L137 encePairwiseOnDemand]: 147/171 looper letters, 486 selfloop transitions, 186 changer transitions 23/802 dead transitions. [2022-11-16 12:35:51,010 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 802 transitions, 6720 flow [2022-11-16 12:35:51,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-16 12:35:51,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-16 12:35:51,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 3453 transitions. [2022-11-16 12:35:51,022 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5769423558897243 [2022-11-16 12:35:51,022 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 3453 transitions. [2022-11-16 12:35:51,022 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 3453 transitions. [2022-11-16 12:35:51,024 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:35:51,024 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 3453 transitions. [2022-11-16 12:35:51,033 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) [2022-11-16 12:35:51,043 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) [2022-11-16 12:35:51,062 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) [2022-11-16 12:35:51,062 INFO L175 Difference]: Start difference. First operand has 249 places, 315 transitions, 1980 flow. Second operand 35 states and 3453 transitions. [2022-11-16 12:35:51,062 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 802 transitions, 6720 flow [2022-11-16 12:35:51,847 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 802 transitions, 6491 flow, removed 111 selfloop flow, removed 4 redundant places. [2022-11-16 12:35:51,856 INFO L231 Difference]: Finished difference. Result has 293 places, 418 transitions, 3457 flow [2022-11-16 12:35:51,857 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=1941, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=3457, PETRI_PLACES=293, PETRI_TRANSITIONS=418} [2022-11-16 12:35:51,857 INFO L288 CegarLoopForPetriNet]: 157 programPoint places, 136 predicate places. [2022-11-16 12:35:51,857 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 418 transitions, 3457 flow [2022-11-16 12:35:51,858 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) [2022-11-16 12:35:51,859 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:35:51,859 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] [2022-11-16 12:35:51,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-16 12:35:51,859 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)] === [2022-11-16 12:35:51,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:35:51,859 INFO L85 PathProgramCache]: Analyzing trace with hash 2063085059, now seen corresponding path program 1 times [2022-11-16 12:35:51,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:35:51,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832945319] [2022-11-16 12:35:51,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:35:51,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:35:51,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:35:51,875 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 12:35:51,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:35:51,892 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 12:35:51,892 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-16 12:35:51,892 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2022-11-16 12:35:51,893 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2022-11-16 12:35:51,893 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2022-11-16 12:35:51,893 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2022-11-16 12:35:51,893 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2022-11-16 12:35:51,893 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2022-11-16 12:35:51,894 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2022-11-16 12:35:51,894 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2022-11-16 12:35:51,894 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 17 remaining) [2022-11-16 12:35:51,894 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 17 remaining) [2022-11-16 12:35:51,894 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 17 remaining) [2022-11-16 12:35:51,894 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2022-11-16 12:35:51,895 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2022-11-16 12:35:51,895 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2022-11-16 12:35:51,895 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2022-11-16 12:35:51,895 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2022-11-16 12:35:51,895 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2022-11-16 12:35:51,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-16 12:35:51,896 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:35:51,896 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-16 12:35:51,896 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-16 12:35:51,920 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-16 12:35:51,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 194 places, 213 transitions, 456 flow [2022-11-16 12:35:51,976 INFO L130 PetriNetUnfolder]: 50/430 cut-off events. [2022-11-16 12:35:51,976 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-11-16 12:35:51,981 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. [2022-11-16 12:35:51,981 INFO L82 GeneralOperation]: Start removeDead. Operand has 194 places, 213 transitions, 456 flow [2022-11-16 12:35:51,984 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 194 places, 213 transitions, 456 flow [2022-11-16 12:35:51,986 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:35:51,986 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;@3d3c0ac9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:35:51,986 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2022-11-16 12:35:51,990 INFO L130 PetriNetUnfolder]: 2/70 cut-off events. [2022-11-16 12:35:51,991 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 12:35:51,991 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:35:51,991 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] [2022-11-16 12:35:51,991 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)] === [2022-11-16 12:35:51,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:35:51,992 INFO L85 PathProgramCache]: Analyzing trace with hash 729632778, now seen corresponding path program 1 times [2022-11-16 12:35:51,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:35:51,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314142922] [2022-11-16 12:35:51,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:35:51,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:35:52,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:35:52,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:35:52,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:35:52,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314142922] [2022-11-16 12:35:52,035 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314142922] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:35:52,035 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:35:52,035 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:35:52,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700697446] [2022-11-16 12:35:52,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:35:52,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:35:52,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:35:52,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:35:52,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:35:52,037 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 213 [2022-11-16 12:35:52,038 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) [2022-11-16 12:35:52,038 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:35:52,038 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 213 [2022-11-16 12:35:52,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:35:52,131 INFO L130 PetriNetUnfolder]: 7/367 cut-off events. [2022-11-16 12:35:52,131 INFO L131 PetriNetUnfolder]: For 69/183 co-relation queries the response was YES. [2022-11-16 12:35:52,134 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. [2022-11-16 12:35:52,135 INFO L137 encePairwiseOnDemand]: 183/213 looper letters, 21 selfloop transitions, 4 changer transitions 0/196 dead transitions. [2022-11-16 12:35:52,135 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 196 transitions, 472 flow [2022-11-16 12:35:52,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:35:52,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 12:35:52,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 925 transitions. [2022-11-16 12:35:52,138 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8685446009389671 [2022-11-16 12:35:52,138 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 925 transitions. [2022-11-16 12:35:52,138 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 925 transitions. [2022-11-16 12:35:52,139 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:35:52,139 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 925 transitions. [2022-11-16 12:35:52,140 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) [2022-11-16 12:35:52,142 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) [2022-11-16 12:35:52,142 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) [2022-11-16 12:35:52,143 INFO L175 Difference]: Start difference. First operand has 194 places, 213 transitions, 456 flow. Second operand 5 states and 925 transitions. [2022-11-16 12:35:52,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 196 transitions, 472 flow [2022-11-16 12:35:52,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 196 transitions, 472 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 12:35:52,146 INFO L231 Difference]: Finished difference. Result has 200 places, 192 transitions, 440 flow [2022-11-16 12:35:52,147 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} [2022-11-16 12:35:52,147 INFO L288 CegarLoopForPetriNet]: 194 programPoint places, 6 predicate places. [2022-11-16 12:35:52,148 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 192 transitions, 440 flow [2022-11-16 12:35:52,148 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) [2022-11-16 12:35:52,148 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:35:52,148 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] [2022-11-16 12:35:52,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-16 12:35:52,149 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)] === [2022-11-16 12:35:52,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:35:52,149 INFO L85 PathProgramCache]: Analyzing trace with hash 325557949, now seen corresponding path program 1 times [2022-11-16 12:35:52,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:35:52,150 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996253050] [2022-11-16 12:35:52,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:35:52,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:35:52,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:35:52,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:35:52,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:35:52,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996253050] [2022-11-16 12:35:52,564 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996253050] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:35:52,564 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:35:52,564 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-16 12:35:52,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828564144] [2022-11-16 12:35:52,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:35:52,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-16 12:35:52,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:35:52,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-16 12:35:52,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2022-11-16 12:35:52,567 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 213 [2022-11-16 12:35:52,568 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) [2022-11-16 12:35:52,568 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:35:52,568 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 213 [2022-11-16 12:35:52,568 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:36:07,242 INFO L130 PetriNetUnfolder]: 49043/109935 cut-off events. [2022-11-16 12:36:07,242 INFO L131 PetriNetUnfolder]: For 2771/2771 co-relation queries the response was YES. [2022-11-16 12:36:07,958 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 1396558 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. [2022-11-16 12:36:08,604 INFO L137 encePairwiseOnDemand]: 195/213 looper letters, 283 selfloop transitions, 38 changer transitions 0/442 dead transitions. [2022-11-16 12:36:08,604 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 442 transitions, 1667 flow [2022-11-16 12:36:08,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-16 12:36:08,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-11-16 12:36:08,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2571 transitions. [2022-11-16 12:36:08,612 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6352853965900667 [2022-11-16 12:36:08,613 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2571 transitions. [2022-11-16 12:36:08,613 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2571 transitions. [2022-11-16 12:36:08,615 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:36:08,615 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2571 transitions. [2022-11-16 12:36:08,622 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) [2022-11-16 12:36:08,630 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) [2022-11-16 12:36:08,632 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) [2022-11-16 12:36:08,633 INFO L175 Difference]: Start difference. First operand has 200 places, 192 transitions, 440 flow. Second operand 19 states and 2571 transitions. [2022-11-16 12:36:08,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 442 transitions, 1667 flow [2022-11-16 12:36:08,638 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 442 transitions, 1665 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 12:36:08,644 INFO L231 Difference]: Finished difference. Result has 227 places, 226 transitions, 703 flow [2022-11-16 12:36:08,645 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} [2022-11-16 12:36:08,646 INFO L288 CegarLoopForPetriNet]: 194 programPoint places, 33 predicate places. [2022-11-16 12:36:08,646 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 226 transitions, 703 flow [2022-11-16 12:36:08,647 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) [2022-11-16 12:36:08,647 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:36:08,647 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] [2022-11-16 12:36:08,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-16 12:36:08,648 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)] === [2022-11-16 12:36:08,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:36:08,648 INFO L85 PathProgramCache]: Analyzing trace with hash -968148000, now seen corresponding path program 1 times [2022-11-16 12:36:08,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:36:08,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461438584] [2022-11-16 12:36:08,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:36:08,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:36:08,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:36:08,707 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:36:08,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:36:08,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461438584] [2022-11-16 12:36:08,707 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461438584] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:36:08,708 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:36:08,708 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:36:08,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955276441] [2022-11-16 12:36:08,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:36:08,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:36:08,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:36:08,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:36:08,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:36:08,713 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 213 [2022-11-16 12:36:08,714 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) [2022-11-16 12:36:08,714 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:36:08,714 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 213 [2022-11-16 12:36:08,715 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:36:09,429 INFO L130 PetriNetUnfolder]: 278/2696 cut-off events. [2022-11-16 12:36:09,430 INFO L131 PetriNetUnfolder]: For 1986/2617 co-relation queries the response was YES. [2022-11-16 12:36:09,470 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 24885 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. [2022-11-16 12:36:09,491 INFO L137 encePairwiseOnDemand]: 207/213 looper letters, 13 selfloop transitions, 8 changer transitions 0/226 dead transitions. [2022-11-16 12:36:09,491 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 226 transitions, 743 flow [2022-11-16 12:36:09,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:36:09,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 12:36:09,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 874 transitions. [2022-11-16 12:36:09,494 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8206572769953052 [2022-11-16 12:36:09,495 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 874 transitions. [2022-11-16 12:36:09,495 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 874 transitions. [2022-11-16 12:36:09,496 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:36:09,496 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 874 transitions. [2022-11-16 12:36:09,498 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) [2022-11-16 12:36:09,503 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) [2022-11-16 12:36:09,504 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) [2022-11-16 12:36:09,504 INFO L175 Difference]: Start difference. First operand has 227 places, 226 transitions, 703 flow. Second operand 5 states and 874 transitions. [2022-11-16 12:36:09,505 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 226 transitions, 743 flow [2022-11-16 12:36:09,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 226 transitions, 736 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-16 12:36:09,519 INFO L231 Difference]: Finished difference. Result has 227 places, 226 transitions, 716 flow [2022-11-16 12:36:09,520 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} [2022-11-16 12:36:09,522 INFO L288 CegarLoopForPetriNet]: 194 programPoint places, 33 predicate places. [2022-11-16 12:36:09,523 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 226 transitions, 716 flow [2022-11-16 12:36:09,523 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) [2022-11-16 12:36:09,523 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:36:09,524 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] [2022-11-16 12:36:09,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-16 12:36:09,524 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)] === [2022-11-16 12:36:09,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:36:09,525 INFO L85 PathProgramCache]: Analyzing trace with hash 52183678, now seen corresponding path program 1 times [2022-11-16 12:36:09,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:36:09,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140761936] [2022-11-16 12:36:09,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:36:09,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:36:09,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:36:09,622 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:36:09,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:36:09,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140761936] [2022-11-16 12:36:09,623 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140761936] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:36:09,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [620210357] [2022-11-16 12:36:09,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:36:09,624 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:36:09,624 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_136b653b-6f1b-45f9-af0c-81029c430099/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:36:09,627 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_136b653b-6f1b-45f9-af0c-81029c430099/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:36:09,661 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_136b653b-6f1b-45f9-af0c-81029c430099/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 12:36:09,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:36:09,733 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 12:36:09,740 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:36:09,793 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:36:09,794 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:36:09,794 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [620210357] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:36:09,794 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:36:09,794 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-16 12:36:09,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047173136] [2022-11-16 12:36:09,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:36:09,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:36:09,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:36:09,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:36:09,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:36:09,798 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 213 [2022-11-16 12:36:09,799 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) [2022-11-16 12:36:09,799 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:36:09,800 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 213 [2022-11-16 12:36:09,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:36:10,658 INFO L130 PetriNetUnfolder]: 278/2694 cut-off events. [2022-11-16 12:36:10,658 INFO L131 PetriNetUnfolder]: For 1995/2586 co-relation queries the response was YES. [2022-11-16 12:36:10,680 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 24902 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. [2022-11-16 12:36:10,695 INFO L137 encePairwiseOnDemand]: 208/213 looper letters, 17 selfloop transitions, 6 changer transitions 0/228 dead transitions. [2022-11-16 12:36:10,695 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 228 transitions, 764 flow [2022-11-16 12:36:10,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:36:10,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 12:36:10,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1221 transitions. [2022-11-16 12:36:10,698 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8189134808853119 [2022-11-16 12:36:10,699 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1221 transitions. [2022-11-16 12:36:10,699 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1221 transitions. [2022-11-16 12:36:10,699 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:36:10,700 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1221 transitions. [2022-11-16 12:36:10,702 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) [2022-11-16 12:36:10,704 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) [2022-11-16 12:36:10,705 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) [2022-11-16 12:36:10,705 INFO L175 Difference]: Start difference. First operand has 227 places, 226 transitions, 716 flow. Second operand 7 states and 1221 transitions. [2022-11-16 12:36:10,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 228 transitions, 764 flow [2022-11-16 12:36:10,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 228 transitions, 752 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 12:36:10,716 INFO L231 Difference]: Finished difference. Result has 229 places, 225 transitions, 712 flow [2022-11-16 12:36:10,717 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} [2022-11-16 12:36:10,719 INFO L288 CegarLoopForPetriNet]: 194 programPoint places, 35 predicate places. [2022-11-16 12:36:10,719 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 225 transitions, 712 flow [2022-11-16 12:36:10,720 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) [2022-11-16 12:36:10,720 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:36:10,720 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] [2022-11-16 12:36:10,734 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_136b653b-6f1b-45f9-af0c-81029c430099/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-16 12:36:10,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_136b653b-6f1b-45f9-af0c-81029c430099/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-16 12:36:10,926 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)] === [2022-11-16 12:36:10,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:36:10,926 INFO L85 PathProgramCache]: Analyzing trace with hash 842155185, now seen corresponding path program 1 times [2022-11-16 12:36:10,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:36:10,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498776112] [2022-11-16 12:36:10,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:36:10,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:36:10,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:36:11,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:36:11,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:36:11,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498776112] [2022-11-16 12:36:11,068 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498776112] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:36:11,068 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:36:11,069 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:36:11,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219386334] [2022-11-16 12:36:11,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:36:11,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:36:11,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:36:11,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:36:11,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:36:11,072 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 213 [2022-11-16 12:36:11,073 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) [2022-11-16 12:36:11,074 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:36:11,074 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 213 [2022-11-16 12:36:11,074 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:36:20,162 INFO L130 PetriNetUnfolder]: 17012/56723 cut-off events. [2022-11-16 12:36:20,162 INFO L131 PetriNetUnfolder]: For 71857/74616 co-relation queries the response was YES. [2022-11-16 12:36:20,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111960 conditions, 56723 events. 17012/56723 cut-off events. For 71857/74616 co-relation queries the response was YES. Maximal size of possible extension queue 1835. Compared 793259 event pairs, 6050 based on Foata normal form. 208/50446 useless extension candidates. Maximal degree in co-relation 105639. Up to 10223 conditions per place. [2022-11-16 12:36:21,015 INFO L137 encePairwiseOnDemand]: 198/213 looper letters, 186 selfloop transitions, 44 changer transitions 0/383 dead transitions. [2022-11-16 12:36:21,016 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 383 transitions, 1895 flow [2022-11-16 12:36:21,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 12:36:21,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-16 12:36:21,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1743 transitions. [2022-11-16 12:36:21,023 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7439180537772087 [2022-11-16 12:36:21,023 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1743 transitions. [2022-11-16 12:36:21,023 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1743 transitions. [2022-11-16 12:36:21,024 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:36:21,024 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1743 transitions. [2022-11-16 12:36:21,027 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) [2022-11-16 12:36:21,030 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) [2022-11-16 12:36:21,032 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) [2022-11-16 12:36:21,032 INFO L175 Difference]: Start difference. First operand has 229 places, 225 transitions, 712 flow. Second operand 11 states and 1743 transitions. [2022-11-16 12:36:21,032 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 383 transitions, 1895 flow [2022-11-16 12:36:21,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 383 transitions, 1884 flow, removed 1 selfloop flow, removed 5 redundant places. [2022-11-16 12:36:21,235 INFO L231 Difference]: Finished difference. Result has 241 places, 262 transitions, 1121 flow [2022-11-16 12:36:21,236 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} [2022-11-16 12:36:21,237 INFO L288 CegarLoopForPetriNet]: 194 programPoint places, 47 predicate places. [2022-11-16 12:36:21,237 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 262 transitions, 1121 flow [2022-11-16 12:36:21,237 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) [2022-11-16 12:36:21,237 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:36:21,238 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] [2022-11-16 12:36:21,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-16 12:36:21,238 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)] === [2022-11-16 12:36:21,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:36:21,238 INFO L85 PathProgramCache]: Analyzing trace with hash -1073885097, now seen corresponding path program 1 times [2022-11-16 12:36:21,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:36:21,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844834048] [2022-11-16 12:36:21,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:36:21,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:36:21,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:36:21,650 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-16 12:36:21,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:36:21,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844834048] [2022-11-16 12:36:21,650 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844834048] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:36:21,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1244101320] [2022-11-16 12:36:21,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:36:21,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:36:21,651 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_136b653b-6f1b-45f9-af0c-81029c430099/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:36:21,654 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_136b653b-6f1b-45f9-af0c-81029c430099/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:36:21,678 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_136b653b-6f1b-45f9-af0c-81029c430099/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 12:36:21,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:36:21,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-16 12:36:21,764 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:36:22,039 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-16 12:36:22,040 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 [2022-11-16 12:36:22,127 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 [2022-11-16 12:36:22,231 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 [2022-11-16 12:36:22,300 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 [2022-11-16 12:36:22,341 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-16 12:36:22,342 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:36:22,422 WARN L833 $PredicateComparison]: unable to prove that (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)) is different from false [2022-11-16 12:36:22,733 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 [2022-11-16 12:36:22,737 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 [2022-11-16 12:36:22,765 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-11-16 12:36:22,765 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 [2022-11-16 12:36:22,785 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 1 not checked. [2022-11-16 12:36:22,785 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1244101320] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:36:22,785 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:36:22,786 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 10] total 30 [2022-11-16 12:36:22,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702857120] [2022-11-16 12:36:22,786 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:36:22,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-11-16 12:36:22,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:36:22,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-11-16 12:36:22,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=763, Unknown=2, NotChecked=56, Total=930 [2022-11-16 12:36:22,791 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 213 [2022-11-16 12:36:22,794 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) [2022-11-16 12:36:22,795 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:36:22,795 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 213 [2022-11-16 12:36:22,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand