./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread/queue_ok_longer.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_bb2d4d54-19ca-4b7e-93c0-dccaa1a039eb/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2d4d54-19ca-4b7e-93c0-dccaa1a039eb/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_bb2d4d54-19ca-4b7e-93c0-dccaa1a039eb/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2d4d54-19ca-4b7e-93c0-dccaa1a039eb/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/queue_ok_longer.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2d4d54-19ca-4b7e-93c0-dccaa1a039eb/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_bb2d4d54-19ca-4b7e-93c0-dccaa1a039eb/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 f58af1aa15d4bec1241042c84c595fb9585ff7c461dd0b44f9fde0638838779a --- 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 12:40:28,283 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:40:28,290 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:40:28,336 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:40:28,339 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:40:28,343 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:40:28,345 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:40:28,351 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:40:28,352 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:40:28,353 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:40:28,354 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:40:28,356 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:40:28,356 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:40:28,357 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:40:28,358 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:40:28,360 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:40:28,361 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:40:28,362 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:40:28,364 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:40:28,366 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:40:28,367 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:40:28,369 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:40:28,370 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:40:28,371 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:40:28,375 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:40:28,376 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:40:28,384 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:40:28,385 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:40:28,386 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:40:28,387 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:40:28,390 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:40:28,392 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:40:28,392 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:40:28,393 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:40:28,395 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:40:28,396 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:40:28,398 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:40:28,398 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:40:28,399 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:40:28,400 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:40:28,401 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:40:28,402 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2d4d54-19ca-4b7e-93c0-dccaa1a039eb/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-16 12:40:28,422 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:40:28,422 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:40:28,423 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:40:28,423 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:40:28,424 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:40:28,424 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:40:28,425 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:40:28,425 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:40:28,425 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:40:28,425 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:40:28,426 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 12:40:28,426 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 12:40:28,426 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 12:40:28,426 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 12:40:28,426 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:40:28,427 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 12:40:28,427 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:40:28,427 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 12:40:28,427 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-16 12:40:28,427 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 12:40:28,427 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 12:40:28,428 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:40:28,428 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 12:40:28,428 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:40:28,428 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:40:28,428 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:40:28,429 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:40:28,429 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:40:28,429 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:40:28,429 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 12:40:28,430 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 12:40:28,430 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 12:40:28,430 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 12:40:28,430 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 12:40:28,430 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 12:40:28,430 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_bb2d4d54-19ca-4b7e-93c0-dccaa1a039eb/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2d4d54-19ca-4b7e-93c0-dccaa1a039eb/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f58af1aa15d4bec1241042c84c595fb9585ff7c461dd0b44f9fde0638838779a [2022-11-16 12:40:28,717 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:40:28,741 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:40:28,744 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:40:28,746 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:40:28,751 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:40:28,752 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2d4d54-19ca-4b7e-93c0-dccaa1a039eb/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/pthread/queue_ok_longer.i [2022-11-16 12:40:28,845 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2d4d54-19ca-4b7e-93c0-dccaa1a039eb/bin/uautomizer-tPACEb0tL8/data/ac4a02460/2bf9541bbb374d51b09e795601c2423c/FLAG14c617358 [2022-11-16 12:40:29,477 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:40:29,478 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2d4d54-19ca-4b7e-93c0-dccaa1a039eb/sv-benchmarks/c/pthread/queue_ok_longer.i [2022-11-16 12:40:29,502 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2d4d54-19ca-4b7e-93c0-dccaa1a039eb/bin/uautomizer-tPACEb0tL8/data/ac4a02460/2bf9541bbb374d51b09e795601c2423c/FLAG14c617358 [2022-11-16 12:40:29,724 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2d4d54-19ca-4b7e-93c0-dccaa1a039eb/bin/uautomizer-tPACEb0tL8/data/ac4a02460/2bf9541bbb374d51b09e795601c2423c [2022-11-16 12:40:29,726 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:40:29,727 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:40:29,729 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:40:29,729 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:40:29,735 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:40:29,736 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:40:29" (1/1) ... [2022-11-16 12:40:29,737 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6569a066 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:40:29, skipping insertion in model container [2022-11-16 12:40:29,739 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:40:29" (1/1) ... [2022-11-16 12:40:29,746 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:40:29,789 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:40:30,363 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_bb2d4d54-19ca-4b7e-93c0-dccaa1a039eb/sv-benchmarks/c/pthread/queue_ok_longer.i[43272,43285] [2022-11-16 12:40:30,383 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_bb2d4d54-19ca-4b7e-93c0-dccaa1a039eb/sv-benchmarks/c/pthread/queue_ok_longer.i[43545,43558] [2022-11-16 12:40:30,392 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:40:30,404 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 12:40:30,463 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_bb2d4d54-19ca-4b7e-93c0-dccaa1a039eb/sv-benchmarks/c/pthread/queue_ok_longer.i[43272,43285] [2022-11-16 12:40:30,474 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_bb2d4d54-19ca-4b7e-93c0-dccaa1a039eb/sv-benchmarks/c/pthread/queue_ok_longer.i[43545,43558] [2022-11-16 12:40:30,480 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:40:30,531 INFO L208 MainTranslator]: Completed translation [2022-11-16 12:40:30,531 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:40:30 WrapperNode [2022-11-16 12:40:30,531 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:40:30,532 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 12:40:30,533 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 12:40:30,533 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 12:40:30,543 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:40:30" (1/1) ... [2022-11-16 12:40:30,561 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:40:30" (1/1) ... [2022-11-16 12:40:30,596 INFO L138 Inliner]: procedures = 274, calls = 59, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 216 [2022-11-16 12:40:30,597 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 12:40:30,597 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 12:40:30,598 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 12:40:30,598 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 12:40:30,606 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:40:30" (1/1) ... [2022-11-16 12:40:30,607 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:40:30" (1/1) ... [2022-11-16 12:40:30,612 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:40:30" (1/1) ... [2022-11-16 12:40:30,613 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:40:30" (1/1) ... [2022-11-16 12:40:30,623 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:40:30" (1/1) ... [2022-11-16 12:40:30,628 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:40:30" (1/1) ... [2022-11-16 12:40:30,630 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:40:30" (1/1) ... [2022-11-16 12:40:30,632 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:40:30" (1/1) ... [2022-11-16 12:40:30,636 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 12:40:30,636 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 12:40:30,637 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 12:40:30,637 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 12:40:30,638 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:40:30" (1/1) ... [2022-11-16 12:40:30,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:40:30,664 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2d4d54-19ca-4b7e-93c0-dccaa1a039eb/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:40:30,679 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2d4d54-19ca-4b7e-93c0-dccaa1a039eb/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 12:40:30,681 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2d4d54-19ca-4b7e-93c0-dccaa1a039eb/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 12:40:30,727 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2022-11-16 12:40:30,729 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2022-11-16 12:40:30,730 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2022-11-16 12:40:30,730 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2022-11-16 12:40:30,730 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 12:40:30,730 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 12:40:30,731 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 12:40:30,731 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 12:40:30,731 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-16 12:40:30,732 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 12:40:30,732 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 12:40:30,732 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 12:40:30,732 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 12:40:30,734 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 12:40:31,006 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 12:40:31,008 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 12:40:31,427 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 12:40:31,439 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 12:40:31,447 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-16 12:40:31,451 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:40:31 BoogieIcfgContainer [2022-11-16 12:40:31,451 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 12:40:31,458 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 12:40:31,458 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 12:40:31,462 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 12:40:31,465 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:40:29" (1/3) ... [2022-11-16 12:40:31,466 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52900f90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:40:31, skipping insertion in model container [2022-11-16 12:40:31,466 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:40:30" (2/3) ... [2022-11-16 12:40:31,467 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52900f90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:40:31, skipping insertion in model container [2022-11-16 12:40:31,467 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:40:31" (3/3) ... [2022-11-16 12:40:31,469 INFO L112 eAbstractionObserver]: Analyzing ICFG queue_ok_longer.i [2022-11-16 12:40:31,498 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 12:40:31,510 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 12:40:31,511 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2022-11-16 12:40:31,511 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 12:40:31,718 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-16 12:40:31,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 247 places, 253 transitions, 522 flow [2022-11-16 12:40:31,964 INFO L130 PetriNetUnfolder]: 13/251 cut-off events. [2022-11-16 12:40:31,965 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-16 12:40:31,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 260 conditions, 251 events. 13/251 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 456 event pairs, 0 based on Foata normal form. 0/226 useless extension candidates. Maximal degree in co-relation 169. Up to 3 conditions per place. [2022-11-16 12:40:31,978 INFO L82 GeneralOperation]: Start removeDead. Operand has 247 places, 253 transitions, 522 flow [2022-11-16 12:40:31,993 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 235 places, 241 transitions, 491 flow [2022-11-16 12:40:32,022 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:40:32,037 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;@3663e7ae, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:40:32,037 INFO L358 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2022-11-16 12:40:32,105 INFO L130 PetriNetUnfolder]: 6/141 cut-off events. [2022-11-16 12:40:32,106 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-16 12:40:32,106 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:40:32,107 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:40:32,108 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2022-11-16 12:40:32,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:40:32,117 INFO L85 PathProgramCache]: Analyzing trace with hash 1690176019, now seen corresponding path program 1 times [2022-11-16 12:40:32,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:40:32,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672818231] [2022-11-16 12:40:32,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:40:32,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:40:32,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:40:33,556 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 12:40:33,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:40:33,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672818231] [2022-11-16 12:40:33,557 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672818231] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:40:33,557 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:40:33,557 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-16 12:40:33,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049941784] [2022-11-16 12:40:33,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:40:33,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 12:40:33,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:40:33,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 12:40:33,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-11-16 12:40:33,637 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 253 [2022-11-16 12:40:33,648 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 241 transitions, 491 flow. Second operand has 12 states, 12 states have (on average 190.5) internal successors, (2286), 12 states have internal predecessors, (2286), 0 states have call successors, (0), 0 states 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 12:40:33,648 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:40:33,649 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 253 [2022-11-16 12:40:33,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:40:34,985 INFO L130 PetriNetUnfolder]: 611/2942 cut-off events. [2022-11-16 12:40:34,986 INFO L131 PetriNetUnfolder]: For 88/91 co-relation queries the response was YES. [2022-11-16 12:40:35,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3904 conditions, 2942 events. 611/2942 cut-off events. For 88/91 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 24671 event pairs, 459 based on Foata normal form. 119/2696 useless extension candidates. Maximal degree in co-relation 3504. Up to 882 conditions per place. [2022-11-16 12:40:35,024 INFO L137 encePairwiseOnDemand]: 236/253 looper letters, 42 selfloop transitions, 12 changer transitions 0/229 dead transitions. [2022-11-16 12:40:35,024 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 229 transitions, 575 flow [2022-11-16 12:40:35,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-16 12:40:35,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-16 12:40:35,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2503 transitions. [2022-11-16 12:40:35,056 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7610215871085436 [2022-11-16 12:40:35,057 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2503 transitions. [2022-11-16 12:40:35,057 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2503 transitions. [2022-11-16 12:40:35,063 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:40:35,066 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2503 transitions. [2022-11-16 12:40:35,078 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 192.53846153846155) internal successors, (2503), 13 states have internal predecessors, (2503), 0 states have call successors, (0), 0 states 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 12:40:35,093 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 253.0) internal successors, (3542), 14 states have internal predecessors, (3542), 0 states have call successors, (0), 0 states 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 12:40:35,097 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 253.0) internal successors, (3542), 14 states have internal predecessors, (3542), 0 states have call successors, (0), 0 states 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 12:40:35,099 INFO L175 Difference]: Start difference. First operand has 235 places, 241 transitions, 491 flow. Second operand 13 states and 2503 transitions. [2022-11-16 12:40:35,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 229 transitions, 575 flow [2022-11-16 12:40:35,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 229 transitions, 570 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 12:40:35,120 INFO L231 Difference]: Finished difference. Result has 237 places, 229 transitions, 486 flow [2022-11-16 12:40:35,122 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=462, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=486, PETRI_PLACES=237, PETRI_TRANSITIONS=229} [2022-11-16 12:40:35,129 INFO L288 CegarLoopForPetriNet]: 235 programPoint places, 2 predicate places. [2022-11-16 12:40:35,130 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 229 transitions, 486 flow [2022-11-16 12:40:35,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 190.5) internal successors, (2286), 12 states have internal predecessors, (2286), 0 states have call successors, (0), 0 states 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 12:40:35,132 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:40:35,133 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:40:35,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 12:40:35,134 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2022-11-16 12:40:35,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:40:35,135 INFO L85 PathProgramCache]: Analyzing trace with hash -1891215175, now seen corresponding path program 1 times [2022-11-16 12:40:35,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:40:35,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918284109] [2022-11-16 12:40:35,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:40:35,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:40:35,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:40:49,420 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 12:40:49,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:40:49,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918284109] [2022-11-16 12:40:49,421 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918284109] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:40:49,422 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:40:49,422 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-16 12:40:49,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039861125] [2022-11-16 12:40:49,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:40:49,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-16 12:40:49,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:40:49,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-16 12:40:49,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=317, Unknown=0, NotChecked=0, Total=380 [2022-11-16 12:40:49,430 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 253 [2022-11-16 12:40:49,434 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 229 transitions, 486 flow. Second operand has 20 states, 20 states have (on average 180.75) internal successors, (3615), 20 states have internal predecessors, (3615), 0 states have call successors, (0), 0 states 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 12:40:49,434 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:40:49,435 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 253 [2022-11-16 12:40:49,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:40:55,701 INFO L130 PetriNetUnfolder]: 1370/5730 cut-off events. [2022-11-16 12:40:55,702 INFO L131 PetriNetUnfolder]: For 30/33 co-relation queries the response was YES. [2022-11-16 12:40:55,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7920 conditions, 5730 events. 1370/5730 cut-off events. For 30/33 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 53671 event pairs, 1005 based on Foata normal form. 1/4946 useless extension candidates. Maximal degree in co-relation 7818. Up to 1675 conditions per place. [2022-11-16 12:40:55,747 INFO L137 encePairwiseOnDemand]: 231/253 looper letters, 108 selfloop transitions, 28 changer transitions 0/301 dead transitions. [2022-11-16 12:40:55,748 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 301 transitions, 908 flow [2022-11-16 12:40:55,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-16 12:40:55,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-16 12:40:55,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 3899 transitions. [2022-11-16 12:40:55,757 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7338603425559947 [2022-11-16 12:40:55,757 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 3899 transitions. [2022-11-16 12:40:55,757 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 3899 transitions. [2022-11-16 12:40:55,760 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:40:55,760 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 3899 transitions. [2022-11-16 12:40:55,769 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 185.66666666666666) internal successors, (3899), 21 states have internal predecessors, (3899), 0 states have call successors, (0), 0 states 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 12:40:55,778 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 253.0) internal successors, (5566), 22 states have internal predecessors, (5566), 0 states have call successors, (0), 0 states 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 12:40:55,781 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 253.0) internal successors, (5566), 22 states have internal predecessors, (5566), 0 states have call successors, (0), 0 states 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 12:40:55,781 INFO L175 Difference]: Start difference. First operand has 237 places, 229 transitions, 486 flow. Second operand 21 states and 3899 transitions. [2022-11-16 12:40:55,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 301 transitions, 908 flow [2022-11-16 12:40:55,786 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 301 transitions, 885 flow, removed 0 selfloop flow, removed 11 redundant places. [2022-11-16 12:40:55,808 INFO L231 Difference]: Finished difference. Result has 255 places, 250 transitions, 622 flow [2022-11-16 12:40:55,823 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=463, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=622, PETRI_PLACES=255, PETRI_TRANSITIONS=250} [2022-11-16 12:40:55,824 INFO L288 CegarLoopForPetriNet]: 235 programPoint places, 20 predicate places. [2022-11-16 12:40:55,824 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 250 transitions, 622 flow [2022-11-16 12:40:55,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 180.75) internal successors, (3615), 20 states have internal predecessors, (3615), 0 states have call successors, (0), 0 states 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 12:40:55,826 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:40:55,826 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:40:55,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 12:40:55,827 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2022-11-16 12:40:55,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:40:55,828 INFO L85 PathProgramCache]: Analyzing trace with hash -2006777373, now seen corresponding path program 1 times [2022-11-16 12:40:55,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:40:55,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098742750] [2022-11-16 12:40:55,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:40:55,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:40:55,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:40:58,100 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 12:40:58,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:40:58,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098742750] [2022-11-16 12:40:58,101 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098742750] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:40:58,101 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:40:58,102 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-16 12:40:58,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779873787] [2022-11-16 12:40:58,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:40:58,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-16 12:40:58,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:40:58,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-16 12:40:58,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=311, Unknown=0, NotChecked=0, Total=380 [2022-11-16 12:40:58,107 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 253 [2022-11-16 12:40:58,111 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 250 transitions, 622 flow. Second operand has 20 states, 20 states have (on average 171.2) internal successors, (3424), 20 states have internal predecessors, (3424), 0 states have call successors, (0), 0 states 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 12:40:58,111 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:40:58,111 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 253 [2022-11-16 12:40:58,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:41:01,579 INFO L130 PetriNetUnfolder]: 2208/7485 cut-off events. [2022-11-16 12:41:01,579 INFO L131 PetriNetUnfolder]: For 872/879 co-relation queries the response was YES. [2022-11-16 12:41:01,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12115 conditions, 7485 events. 2208/7485 cut-off events. For 872/879 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 69423 event pairs, 120 based on Foata normal form. 86/6819 useless extension candidates. Maximal degree in co-relation 11998. Up to 1746 conditions per place. [2022-11-16 12:41:01,639 INFO L137 encePairwiseOnDemand]: 231/253 looper letters, 210 selfloop transitions, 44 changer transitions 0/411 dead transitions. [2022-11-16 12:41:01,639 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 411 transitions, 1511 flow [2022-11-16 12:41:01,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-16 12:41:01,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-11-16 12:41:01,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 3960 transitions. [2022-11-16 12:41:01,650 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7114624505928854 [2022-11-16 12:41:01,650 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 3960 transitions. [2022-11-16 12:41:01,650 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 3960 transitions. [2022-11-16 12:41:01,653 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:41:01,653 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 3960 transitions. [2022-11-16 12:41:01,661 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 180.0) internal successors, (3960), 22 states have internal predecessors, (3960), 0 states have call successors, (0), 0 states 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 12:41:01,673 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 253.0) internal successors, (5819), 23 states have internal predecessors, (5819), 0 states have call successors, (0), 0 states 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 12:41:01,676 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 253.0) internal successors, (5819), 23 states have internal predecessors, (5819), 0 states have call successors, (0), 0 states 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 12:41:01,677 INFO L175 Difference]: Start difference. First operand has 255 places, 250 transitions, 622 flow. Second operand 22 states and 3960 transitions. [2022-11-16 12:41:01,677 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 411 transitions, 1511 flow [2022-11-16 12:41:01,692 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 411 transitions, 1496 flow, removed 0 selfloop flow, removed 8 redundant places. [2022-11-16 12:41:01,699 INFO L231 Difference]: Finished difference. Result has 275 places, 279 transitions, 865 flow [2022-11-16 12:41:01,699 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=607, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=865, PETRI_PLACES=275, PETRI_TRANSITIONS=279} [2022-11-16 12:41:01,702 INFO L288 CegarLoopForPetriNet]: 235 programPoint places, 40 predicate places. [2022-11-16 12:41:01,702 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 279 transitions, 865 flow [2022-11-16 12:41:01,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 171.2) internal successors, (3424), 20 states have internal predecessors, (3424), 0 states have call successors, (0), 0 states 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 12:41:01,704 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:41:01,704 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:41:01,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 12:41:01,705 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2022-11-16 12:41:01,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:41:01,706 INFO L85 PathProgramCache]: Analyzing trace with hash 1882764851, now seen corresponding path program 1 times [2022-11-16 12:41:01,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:41:01,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711612881] [2022-11-16 12:41:01,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:41:01,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:41:01,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:01,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:41:01,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:41:01,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711612881] [2022-11-16 12:41:01,799 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711612881] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:41:01,799 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:41:01,800 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 12:41:01,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7668719] [2022-11-16 12:41:01,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:41:01,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:41:01,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:41:01,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:41:01,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:41:01,805 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 233 out of 253 [2022-11-16 12:41:01,806 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 279 transitions, 865 flow. Second operand has 4 states, 4 states have (on average 235.0) internal successors, (940), 4 states have internal predecessors, (940), 0 states have call successors, (0), 0 states 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 12:41:01,806 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:41:01,807 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 233 of 253 [2022-11-16 12:41:01,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:41:02,403 INFO L130 PetriNetUnfolder]: 220/3317 cut-off events. [2022-11-16 12:41:02,403 INFO L131 PetriNetUnfolder]: For 227/229 co-relation queries the response was YES. [2022-11-16 12:41:02,424 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4053 conditions, 3317 events. 220/3317 cut-off events. For 227/229 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 30023 event pairs, 15 based on Foata normal form. 0/2897 useless extension candidates. Maximal degree in co-relation 3961. Up to 224 conditions per place. [2022-11-16 12:41:02,440 INFO L137 encePairwiseOnDemand]: 248/253 looper letters, 15 selfloop transitions, 4 changer transitions 0/286 dead transitions. [2022-11-16 12:41:02,440 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 286 transitions, 919 flow [2022-11-16 12:41:02,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:41:02,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 12:41:02,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 952 transitions. [2022-11-16 12:41:02,445 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9407114624505929 [2022-11-16 12:41:02,445 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 952 transitions. [2022-11-16 12:41:02,445 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 952 transitions. [2022-11-16 12:41:02,450 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:41:02,450 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 952 transitions. [2022-11-16 12:41:02,452 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 238.0) internal successors, (952), 4 states have internal predecessors, (952), 0 states have call successors, (0), 0 states 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 12:41:02,454 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 253.0) internal successors, (1265), 5 states have internal predecessors, (1265), 0 states have call successors, (0), 0 states 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 12:41:02,455 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 253.0) internal successors, (1265), 5 states have internal predecessors, (1265), 0 states have call successors, (0), 0 states 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 12:41:02,455 INFO L175 Difference]: Start difference. First operand has 275 places, 279 transitions, 865 flow. Second operand 4 states and 952 transitions. [2022-11-16 12:41:02,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 286 transitions, 919 flow [2022-11-16 12:41:02,462 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 286 transitions, 886 flow, removed 9 selfloop flow, removed 8 redundant places. [2022-11-16 12:41:02,467 INFO L231 Difference]: Finished difference. Result has 272 places, 282 transitions, 860 flow [2022-11-16 12:41:02,473 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=832, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=860, PETRI_PLACES=272, PETRI_TRANSITIONS=282} [2022-11-16 12:41:02,475 INFO L288 CegarLoopForPetriNet]: 235 programPoint places, 37 predicate places. [2022-11-16 12:41:02,475 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 282 transitions, 860 flow [2022-11-16 12:41:02,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 235.0) internal successors, (940), 4 states have internal predecessors, (940), 0 states have call successors, (0), 0 states 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 12:41:02,476 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:41:02,476 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:41:02,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 12:41:02,477 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2022-11-16 12:41:02,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:41:02,477 INFO L85 PathProgramCache]: Analyzing trace with hash -752846262, now seen corresponding path program 1 times [2022-11-16 12:41:02,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:41:02,478 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360881333] [2022-11-16 12:41:02,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:41:02,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:41:02,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:02,575 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 12:41:02,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:41:02,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360881333] [2022-11-16 12:41:02,576 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360881333] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:41:02,577 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:41:02,577 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:41:02,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316674971] [2022-11-16 12:41:02,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:41:02,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:41:02,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:41:02,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:41:02,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:41:02,580 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 230 out of 253 [2022-11-16 12:41:02,581 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 282 transitions, 860 flow. Second operand has 4 states, 4 states have (on average 231.75) internal successors, (927), 4 states have internal predecessors, (927), 0 states have call successors, (0), 0 states 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 12:41:02,581 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:41:02,581 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 230 of 253 [2022-11-16 12:41:02,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:41:03,587 INFO L130 PetriNetUnfolder]: 372/4923 cut-off events. [2022-11-16 12:41:03,588 INFO L131 PetriNetUnfolder]: For 323/333 co-relation queries the response was YES. [2022-11-16 12:41:03,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6385 conditions, 4923 events. 372/4923 cut-off events. For 323/333 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 51882 event pairs, 31 based on Foata normal form. 0/4347 useless extension candidates. Maximal degree in co-relation 6298. Up to 486 conditions per place. [2022-11-16 12:41:03,637 INFO L137 encePairwiseOnDemand]: 246/253 looper letters, 21 selfloop transitions, 4 changer transitions 0/292 dead transitions. [2022-11-16 12:41:03,637 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 292 transitions, 933 flow [2022-11-16 12:41:03,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:41:03,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 12:41:03,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1178 transitions. [2022-11-16 12:41:03,641 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9312252964426877 [2022-11-16 12:41:03,642 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1178 transitions. [2022-11-16 12:41:03,642 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1178 transitions. [2022-11-16 12:41:03,643 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:41:03,643 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1178 transitions. [2022-11-16 12:41:03,647 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 235.6) internal successors, (1178), 5 states have internal predecessors, (1178), 0 states have call successors, (0), 0 states 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 12:41:03,650 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 253.0) internal successors, (1518), 6 states have internal predecessors, (1518), 0 states have call successors, (0), 0 states 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 12:41:03,651 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 253.0) internal successors, (1518), 6 states have internal predecessors, (1518), 0 states have call successors, (0), 0 states 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 12:41:03,651 INFO L175 Difference]: Start difference. First operand has 272 places, 282 transitions, 860 flow. Second operand 5 states and 1178 transitions. [2022-11-16 12:41:03,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 292 transitions, 933 flow [2022-11-16 12:41:03,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 292 transitions, 931 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 12:41:03,664 INFO L231 Difference]: Finished difference. Result has 278 places, 285 transitions, 890 flow [2022-11-16 12:41:03,668 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=858, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=890, PETRI_PLACES=278, PETRI_TRANSITIONS=285} [2022-11-16 12:41:03,669 INFO L288 CegarLoopForPetriNet]: 235 programPoint places, 43 predicate places. [2022-11-16 12:41:03,671 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 285 transitions, 890 flow [2022-11-16 12:41:03,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 231.75) internal successors, (927), 4 states have internal predecessors, (927), 0 states have call successors, (0), 0 states 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 12:41:03,682 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:41:03,682 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:41:03,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 12:41:03,683 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2022-11-16 12:41:03,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:41:03,684 INFO L85 PathProgramCache]: Analyzing trace with hash 1672081442, now seen corresponding path program 1 times [2022-11-16 12:41:03,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:41:03,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995532559] [2022-11-16 12:41:03,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:41:03,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:41:03,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:06,914 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 12:41:06,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:41:06,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995532559] [2022-11-16 12:41:06,915 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995532559] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:41:06,915 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:41:06,915 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-16 12:41:06,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164414534] [2022-11-16 12:41:06,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:41:06,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-16 12:41:06,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:41:06,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-16 12:41:06,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=310, Unknown=0, NotChecked=0, Total=380 [2022-11-16 12:41:06,920 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 253 [2022-11-16 12:41:06,924 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 285 transitions, 890 flow. Second operand has 20 states, 20 states have (on average 180.9) internal successors, (3618), 20 states have internal predecessors, (3618), 0 states have call successors, (0), 0 states 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 12:41:06,925 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:41:06,925 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 253 [2022-11-16 12:41:06,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:41:12,957 INFO L130 PetriNetUnfolder]: 6627/24233 cut-off events. [2022-11-16 12:41:12,958 INFO L131 PetriNetUnfolder]: For 4271/4338 co-relation queries the response was YES. [2022-11-16 12:41:13,090 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41542 conditions, 24233 events. 6627/24233 cut-off events. For 4271/4338 co-relation queries the response was YES. Maximal size of possible extension queue 540. Compared 295397 event pairs, 4023 based on Foata normal form. 11/21522 useless extension candidates. Maximal degree in co-relation 41427. Up to 8780 conditions per place. [2022-11-16 12:41:13,177 INFO L137 encePairwiseOnDemand]: 230/253 looper letters, 134 selfloop transitions, 34 changer transitions 0/352 dead transitions. [2022-11-16 12:41:13,177 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 352 transitions, 1399 flow [2022-11-16 12:41:13,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-16 12:41:13,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-16 12:41:13,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 3903 transitions. [2022-11-16 12:41:13,187 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7346132128740824 [2022-11-16 12:41:13,188 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 3903 transitions. [2022-11-16 12:41:13,188 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 3903 transitions. [2022-11-16 12:41:13,190 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:41:13,191 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 3903 transitions. [2022-11-16 12:41:13,198 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 185.85714285714286) internal successors, (3903), 21 states have internal predecessors, (3903), 0 states have call successors, (0), 0 states 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 12:41:13,207 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 253.0) internal successors, (5566), 22 states have internal predecessors, (5566), 0 states have call successors, (0), 0 states 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 12:41:13,210 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 253.0) internal successors, (5566), 22 states have internal predecessors, (5566), 0 states have call successors, (0), 0 states 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 12:41:13,210 INFO L175 Difference]: Start difference. First operand has 278 places, 285 transitions, 890 flow. Second operand 21 states and 3903 transitions. [2022-11-16 12:41:13,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 352 transitions, 1399 flow [2022-11-16 12:41:13,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 352 transitions, 1397 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 12:41:13,300 INFO L231 Difference]: Finished difference. Result has 302 places, 295 transitions, 1035 flow [2022-11-16 12:41:13,301 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=888, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1035, PETRI_PLACES=302, PETRI_TRANSITIONS=295} [2022-11-16 12:41:13,305 INFO L288 CegarLoopForPetriNet]: 235 programPoint places, 67 predicate places. [2022-11-16 12:41:13,305 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 295 transitions, 1035 flow [2022-11-16 12:41:13,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 180.9) internal successors, (3618), 20 states have internal predecessors, (3618), 0 states have call successors, (0), 0 states 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 12:41:13,306 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:41:13,307 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:41:13,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 12:41:13,307 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2022-11-16 12:41:13,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:41:13,308 INFO L85 PathProgramCache]: Analyzing trace with hash 290237644, now seen corresponding path program 1 times [2022-11-16 12:41:13,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:41:13,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295596712] [2022-11-16 12:41:13,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:41:13,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:41:13,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:14,845 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 12:41:14,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:41:14,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295596712] [2022-11-16 12:41:14,846 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295596712] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:41:14,846 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:41:14,846 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-16 12:41:14,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664537728] [2022-11-16 12:41:14,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:41:14,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-16 12:41:14,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:41:14,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-16 12:41:14,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=272, Unknown=0, NotChecked=0, Total=342 [2022-11-16 12:41:14,856 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 253 [2022-11-16 12:41:14,860 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 295 transitions, 1035 flow. Second operand has 19 states, 19 states have (on average 171.47368421052633) internal successors, (3258), 19 states have internal predecessors, (3258), 0 states have call successors, (0), 0 states 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 12:41:14,861 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:41:14,861 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 253 [2022-11-16 12:41:14,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:41:21,242 INFO L130 PetriNetUnfolder]: 8330/30102 cut-off events. [2022-11-16 12:41:21,242 INFO L131 PetriNetUnfolder]: For 7594/7669 co-relation queries the response was YES. [2022-11-16 12:41:21,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54311 conditions, 30102 events. 8330/30102 cut-off events. For 7594/7669 co-relation queries the response was YES. Maximal size of possible extension queue 666. Compared 376857 event pairs, 1383 based on Foata normal form. 254/28126 useless extension candidates. Maximal degree in co-relation 54174. Up to 8392 conditions per place. [2022-11-16 12:41:21,561 INFO L137 encePairwiseOnDemand]: 230/253 looper letters, 217 selfloop transitions, 59 changer transitions 0/452 dead transitions. [2022-11-16 12:41:21,561 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 452 transitions, 2043 flow [2022-11-16 12:41:21,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-16 12:41:21,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-16 12:41:21,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 3785 transitions. [2022-11-16 12:41:21,572 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.712403538490495 [2022-11-16 12:41:21,572 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 3785 transitions. [2022-11-16 12:41:21,572 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 3785 transitions. [2022-11-16 12:41:21,575 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:41:21,575 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 3785 transitions. [2022-11-16 12:41:21,584 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 180.23809523809524) internal successors, (3785), 21 states have internal predecessors, (3785), 0 states have call successors, (0), 0 states 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 12:41:21,594 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 253.0) internal successors, (5566), 22 states have internal predecessors, (5566), 0 states have call successors, (0), 0 states 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 12:41:21,597 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 253.0) internal successors, (5566), 22 states have internal predecessors, (5566), 0 states have call successors, (0), 0 states 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 12:41:21,597 INFO L175 Difference]: Start difference. First operand has 302 places, 295 transitions, 1035 flow. Second operand 21 states and 3785 transitions. [2022-11-16 12:41:21,597 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 452 transitions, 2043 flow [2022-11-16 12:41:21,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 452 transitions, 2009 flow, removed 2 selfloop flow, removed 13 redundant places. [2022-11-16 12:41:21,923 INFO L231 Difference]: Finished difference. Result has 316 places, 319 transitions, 1339 flow [2022-11-16 12:41:21,923 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=1001, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1339, PETRI_PLACES=316, PETRI_TRANSITIONS=319} [2022-11-16 12:41:21,924 INFO L288 CegarLoopForPetriNet]: 235 programPoint places, 81 predicate places. [2022-11-16 12:41:21,924 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 319 transitions, 1339 flow [2022-11-16 12:41:21,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 171.47368421052633) internal successors, (3258), 19 states have internal predecessors, (3258), 0 states have call successors, (0), 0 states 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 12:41:21,926 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:41:21,926 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:41:21,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 12:41:21,926 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2022-11-16 12:41:21,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:41:21,927 INFO L85 PathProgramCache]: Analyzing trace with hash 46439930, now seen corresponding path program 2 times [2022-11-16 12:41:21,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:41:21,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136132446] [2022-11-16 12:41:21,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:41:21,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:41:21,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:23,532 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 12:41:23,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:41:23,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136132446] [2022-11-16 12:41:23,532 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136132446] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:41:23,533 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:41:23,533 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-16 12:41:23,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524236913] [2022-11-16 12:41:23,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:41:23,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-16 12:41:23,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:41:23,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-16 12:41:23,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2022-11-16 12:41:23,539 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 253 [2022-11-16 12:41:23,543 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 319 transitions, 1339 flow. Second operand has 19 states, 19 states have (on average 171.47368421052633) internal successors, (3258), 19 states have internal predecessors, (3258), 0 states have call successors, (0), 0 states 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 12:41:23,543 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:41:23,544 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 253 [2022-11-16 12:41:23,544 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:41:30,389 INFO L130 PetriNetUnfolder]: 8948/32438 cut-off events. [2022-11-16 12:41:30,389 INFO L131 PetriNetUnfolder]: For 16762/16951 co-relation queries the response was YES. [2022-11-16 12:41:30,631 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61556 conditions, 32438 events. 8948/32438 cut-off events. For 16762/16951 co-relation queries the response was YES. Maximal size of possible extension queue 721. Compared 410893 event pairs, 1344 based on Foata normal form. 340/30380 useless extension candidates. Maximal degree in co-relation 61412. Up to 6856 conditions per place. [2022-11-16 12:41:30,763 INFO L137 encePairwiseOnDemand]: 232/253 looper letters, 196 selfloop transitions, 64 changer transitions 0/436 dead transitions. [2022-11-16 12:41:30,763 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 436 transitions, 2178 flow [2022-11-16 12:41:30,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-16 12:41:30,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-16 12:41:30,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3253 transitions. [2022-11-16 12:41:30,781 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7143170838823013 [2022-11-16 12:41:30,781 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3253 transitions. [2022-11-16 12:41:30,782 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3253 transitions. [2022-11-16 12:41:30,786 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:41:30,786 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3253 transitions. [2022-11-16 12:41:30,795 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 180.72222222222223) internal successors, (3253), 18 states have internal predecessors, (3253), 0 states have call successors, (0), 0 states 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 12:41:30,808 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 253.0) internal successors, (4807), 19 states have internal predecessors, (4807), 0 states have call successors, (0), 0 states 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 12:41:30,810 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 253.0) internal successors, (4807), 19 states have internal predecessors, (4807), 0 states have call successors, (0), 0 states 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 12:41:30,810 INFO L175 Difference]: Start difference. First operand has 316 places, 319 transitions, 1339 flow. Second operand 18 states and 3253 transitions. [2022-11-16 12:41:30,810 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 436 transitions, 2178 flow [2022-11-16 12:41:31,168 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 436 transitions, 2133 flow, removed 13 selfloop flow, removed 9 redundant places. [2022-11-16 12:41:31,175 INFO L231 Difference]: Finished difference. Result has 328 places, 327 transitions, 1552 flow [2022-11-16 12:41:31,176 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=1302, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=319, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1552, PETRI_PLACES=328, PETRI_TRANSITIONS=327} [2022-11-16 12:41:31,179 INFO L288 CegarLoopForPetriNet]: 235 programPoint places, 93 predicate places. [2022-11-16 12:41:31,179 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 327 transitions, 1552 flow [2022-11-16 12:41:31,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 171.47368421052633) internal successors, (3258), 19 states have internal predecessors, (3258), 0 states have call successors, (0), 0 states 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 12:41:31,181 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:41:31,181 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:41:31,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 12:41:31,181 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2022-11-16 12:41:31,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:41:31,182 INFO L85 PathProgramCache]: Analyzing trace with hash -1705076601, now seen corresponding path program 1 times [2022-11-16 12:41:31,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:41:31,182 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513860966] [2022-11-16 12:41:31,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:41:31,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:41:31,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:31,325 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 12:41:31,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:41:31,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513860966] [2022-11-16 12:41:31,326 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513860966] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:41:31,326 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:41:31,326 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:41:31,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84414040] [2022-11-16 12:41:31,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:41:31,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:41:31,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:41:31,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:41:31,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:41:31,330 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 230 out of 253 [2022-11-16 12:41:31,332 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 327 transitions, 1552 flow. Second operand has 4 states, 4 states have (on average 231.75) internal successors, (927), 4 states have internal predecessors, (927), 0 states have call successors, (0), 0 states 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 12:41:31,332 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:41:31,332 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 230 of 253 [2022-11-16 12:41:31,332 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:41:32,698 INFO L130 PetriNetUnfolder]: 468/7502 cut-off events. [2022-11-16 12:41:32,698 INFO L131 PetriNetUnfolder]: For 1852/2142 co-relation queries the response was YES. [2022-11-16 12:41:32,767 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10353 conditions, 7502 events. 468/7502 cut-off events. For 1852/2142 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 85315 event pairs, 23 based on Foata normal form. 44/6886 useless extension candidates. Maximal degree in co-relation 10273. Up to 231 conditions per place. [2022-11-16 12:41:32,793 INFO L137 encePairwiseOnDemand]: 246/253 looper letters, 21 selfloop transitions, 4 changer transitions 0/337 dead transitions. [2022-11-16 12:41:32,793 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 337 transitions, 1628 flow [2022-11-16 12:41:32,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:41:32,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 12:41:32,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1178 transitions. [2022-11-16 12:41:32,796 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9312252964426877 [2022-11-16 12:41:32,797 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1178 transitions. [2022-11-16 12:41:32,797 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1178 transitions. [2022-11-16 12:41:32,798 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:41:32,798 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1178 transitions. [2022-11-16 12:41:32,800 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 235.6) internal successors, (1178), 5 states have internal predecessors, (1178), 0 states have call successors, (0), 0 states 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 12:41:32,803 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 253.0) internal successors, (1518), 6 states have internal predecessors, (1518), 0 states have call successors, (0), 0 states 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 12:41:32,804 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 253.0) internal successors, (1518), 6 states have internal predecessors, (1518), 0 states have call successors, (0), 0 states 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 12:41:32,804 INFO L175 Difference]: Start difference. First operand has 328 places, 327 transitions, 1552 flow. Second operand 5 states and 1178 transitions. [2022-11-16 12:41:32,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 337 transitions, 1628 flow [2022-11-16 12:41:32,832 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 337 transitions, 1582 flow, removed 7 selfloop flow, removed 10 redundant places. [2022-11-16 12:41:32,838 INFO L231 Difference]: Finished difference. Result has 325 places, 330 transitions, 1538 flow [2022-11-16 12:41:32,839 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=1506, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=323, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1538, PETRI_PLACES=325, PETRI_TRANSITIONS=330} [2022-11-16 12:41:32,839 INFO L288 CegarLoopForPetriNet]: 235 programPoint places, 90 predicate places. [2022-11-16 12:41:32,840 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 330 transitions, 1538 flow [2022-11-16 12:41:32,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 231.75) internal successors, (927), 4 states have internal predecessors, (927), 0 states have call successors, (0), 0 states 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 12:41:32,840 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:41:32,841 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:41:32,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-16 12:41:32,841 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2022-11-16 12:41:32,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:41:32,842 INFO L85 PathProgramCache]: Analyzing trace with hash 1577829084, now seen corresponding path program 1 times [2022-11-16 12:41:32,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:41:32,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883596095] [2022-11-16 12:41:32,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:41:32,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:41:32,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:32,940 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 12:41:32,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:41:32,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883596095] [2022-11-16 12:41:32,941 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883596095] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:41:32,941 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:41:32,941 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:41:32,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532096605] [2022-11-16 12:41:32,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:41:32,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:41:32,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:41:32,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:41:32,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:41:32,944 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 236 out of 253 [2022-11-16 12:41:32,945 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 330 transitions, 1538 flow. Second operand has 3 states, 3 states have (on average 237.66666666666666) internal successors, (713), 3 states have internal predecessors, (713), 0 states have call successors, (0), 0 states 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 12:41:32,945 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:41:32,945 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 236 of 253 [2022-11-16 12:41:32,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:41:33,176 INFO L130 PetriNetUnfolder]: 50/976 cut-off events. [2022-11-16 12:41:33,177 INFO L131 PetriNetUnfolder]: For 402/403 co-relation queries the response was YES. [2022-11-16 12:41:33,182 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1578 conditions, 976 events. 50/976 cut-off events. For 402/403 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 4469 event pairs, 2 based on Foata normal form. 0/914 useless extension candidates. Maximal degree in co-relation 1519. Up to 22 conditions per place. [2022-11-16 12:41:33,184 INFO L137 encePairwiseOnDemand]: 249/253 looper letters, 7 selfloop transitions, 2 changer transitions 5/297 dead transitions. [2022-11-16 12:41:33,185 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 297 transitions, 1251 flow [2022-11-16 12:41:33,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:41:33,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 12:41:33,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 721 transitions. [2022-11-16 12:41:33,189 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9499341238471674 [2022-11-16 12:41:33,189 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 721 transitions. [2022-11-16 12:41:33,189 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 721 transitions. [2022-11-16 12:41:33,191 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:41:33,191 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 721 transitions. [2022-11-16 12:41:33,195 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 240.33333333333334) internal successors, (721), 3 states have internal predecessors, (721), 0 states have call successors, (0), 0 states 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 12:41:33,197 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 253.0) internal successors, (1012), 4 states have internal predecessors, (1012), 0 states have call successors, (0), 0 states 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 12:41:33,197 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 253.0) internal successors, (1012), 4 states have internal predecessors, (1012), 0 states have call successors, (0), 0 states 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 12:41:33,198 INFO L175 Difference]: Start difference. First operand has 325 places, 330 transitions, 1538 flow. Second operand 3 states and 721 transitions. [2022-11-16 12:41:33,198 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 297 transitions, 1251 flow [2022-11-16 12:41:33,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 297 transitions, 1226 flow, removed 8 selfloop flow, removed 4 redundant places. [2022-11-16 12:41:33,209 INFO L231 Difference]: Finished difference. Result has 320 places, 291 transitions, 1195 flow [2022-11-16 12:41:33,210 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=1193, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=292, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1195, PETRI_PLACES=320, PETRI_TRANSITIONS=291} [2022-11-16 12:41:33,211 INFO L288 CegarLoopForPetriNet]: 235 programPoint places, 85 predicate places. [2022-11-16 12:41:33,213 INFO L495 AbstractCegarLoop]: Abstraction has has 320 places, 291 transitions, 1195 flow [2022-11-16 12:41:33,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 237.66666666666666) internal successors, (713), 3 states have internal predecessors, (713), 0 states have call successors, (0), 0 states 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 12:41:33,214 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:41:33,214 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:41:33,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-16 12:41:33,214 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2022-11-16 12:41:33,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:41:33,215 INFO L85 PathProgramCache]: Analyzing trace with hash -858914285, now seen corresponding path program 1 times [2022-11-16 12:41:33,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:41:33,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201465233] [2022-11-16 12:41:33,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:41:33,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:41:33,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:34,440 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:41:34,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:41:34,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201465233] [2022-11-16 12:41:34,441 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201465233] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:41:34,441 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:41:34,441 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-11-16 12:41:34,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809865861] [2022-11-16 12:41:34,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:41:34,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-16 12:41:34,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:41:34,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-16 12:41:34,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2022-11-16 12:41:34,445 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 253 [2022-11-16 12:41:34,448 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 291 transitions, 1195 flow. Second operand has 17 states, 17 states have (on average 185.64705882352942) internal successors, (3156), 17 states have internal predecessors, (3156), 0 states have call successors, (0), 0 states 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 12:41:34,448 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:41:34,448 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 253 [2022-11-16 12:41:34,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:41:35,856 INFO L130 PetriNetUnfolder]: 331/2030 cut-off events. [2022-11-16 12:41:35,857 INFO L131 PetriNetUnfolder]: For 1030/1034 co-relation queries the response was YES. [2022-11-16 12:41:35,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3847 conditions, 2030 events. 331/2030 cut-off events. For 1030/1034 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 12808 event pairs, 237 based on Foata normal form. 2/1911 useless extension candidates. Maximal degree in co-relation 3712. Up to 643 conditions per place. [2022-11-16 12:41:35,873 INFO L137 encePairwiseOnDemand]: 236/253 looper letters, 77 selfloop transitions, 30 changer transitions 0/299 dead transitions. [2022-11-16 12:41:35,873 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 299 transitions, 1423 flow [2022-11-16 12:41:35,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-16 12:41:35,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-16 12:41:35,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2829 transitions. [2022-11-16 12:41:35,881 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7454545454545455 [2022-11-16 12:41:35,881 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2829 transitions. [2022-11-16 12:41:35,881 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2829 transitions. [2022-11-16 12:41:35,884 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:41:35,884 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2829 transitions. [2022-11-16 12:41:35,891 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 188.6) internal successors, (2829), 15 states have internal predecessors, (2829), 0 states have call successors, (0), 0 states 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 12:41:35,899 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 253.0) internal successors, (4048), 16 states have internal predecessors, (4048), 0 states have call successors, (0), 0 states 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 12:41:35,901 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 253.0) internal successors, (4048), 16 states have internal predecessors, (4048), 0 states have call successors, (0), 0 states 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 12:41:35,901 INFO L175 Difference]: Start difference. First operand has 320 places, 291 transitions, 1195 flow. Second operand 15 states and 2829 transitions. [2022-11-16 12:41:35,901 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 299 transitions, 1423 flow [2022-11-16 12:41:35,913 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 331 places, 299 transitions, 1419 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 12:41:35,919 INFO L231 Difference]: Finished difference. Result has 334 places, 294 transitions, 1281 flow [2022-11-16 12:41:35,920 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=1177, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1281, PETRI_PLACES=334, PETRI_TRANSITIONS=294} [2022-11-16 12:41:35,921 INFO L288 CegarLoopForPetriNet]: 235 programPoint places, 99 predicate places. [2022-11-16 12:41:35,921 INFO L495 AbstractCegarLoop]: Abstraction has has 334 places, 294 transitions, 1281 flow [2022-11-16 12:41:35,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 185.64705882352942) internal successors, (3156), 17 states have internal predecessors, (3156), 0 states have call successors, (0), 0 states 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 12:41:35,923 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:41:35,923 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:41:35,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-16 12:41:35,924 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2022-11-16 12:41:35,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:41:35,924 INFO L85 PathProgramCache]: Analyzing trace with hash 751302825, now seen corresponding path program 1 times [2022-11-16 12:41:35,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:41:35,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532497021] [2022-11-16 12:41:35,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:41:35,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:41:35,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:37,845 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:41:37,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:41:37,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532497021] [2022-11-16 12:41:37,846 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532497021] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:41:37,846 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:41:37,846 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-16 12:41:37,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879225743] [2022-11-16 12:41:37,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:41:37,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-16 12:41:37,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:41:37,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-16 12:41:37,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2022-11-16 12:41:37,851 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 253 [2022-11-16 12:41:37,855 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 294 transitions, 1281 flow. Second operand has 18 states, 18 states have (on average 175.05555555555554) internal successors, (3151), 18 states have internal predecessors, (3151), 0 states have call successors, (0), 0 states 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 12:41:37,855 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:41:37,855 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 253 [2022-11-16 12:41:37,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:41:39,417 INFO L130 PetriNetUnfolder]: 317/1978 cut-off events. [2022-11-16 12:41:39,418 INFO L131 PetriNetUnfolder]: For 1122/1126 co-relation queries the response was YES. [2022-11-16 12:41:39,429 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3831 conditions, 1978 events. 317/1978 cut-off events. For 1122/1126 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 12488 event pairs, 109 based on Foata normal form. 6/1875 useless extension candidates. Maximal degree in co-relation 3677. Up to 477 conditions per place. [2022-11-16 12:41:39,434 INFO L137 encePairwiseOnDemand]: 237/253 looper letters, 97 selfloop transitions, 26 changer transitions 0/306 dead transitions. [2022-11-16 12:41:39,434 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 348 places, 306 transitions, 1544 flow [2022-11-16 12:41:39,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-16 12:41:39,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-16 12:41:39,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2678 transitions. [2022-11-16 12:41:39,441 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.70566534914361 [2022-11-16 12:41:39,441 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2678 transitions. [2022-11-16 12:41:39,441 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2678 transitions. [2022-11-16 12:41:39,443 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:41:39,443 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2678 transitions. [2022-11-16 12:41:39,450 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 178.53333333333333) internal successors, (2678), 15 states have internal predecessors, (2678), 0 states have call successors, (0), 0 states 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 12:41:39,457 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 253.0) internal successors, (4048), 16 states have internal predecessors, (4048), 0 states have call successors, (0), 0 states 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 12:41:39,459 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 253.0) internal successors, (4048), 16 states have internal predecessors, (4048), 0 states have call successors, (0), 0 states 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 12:41:39,459 INFO L175 Difference]: Start difference. First operand has 334 places, 294 transitions, 1281 flow. Second operand 15 states and 2678 transitions. [2022-11-16 12:41:39,459 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 348 places, 306 transitions, 1544 flow [2022-11-16 12:41:39,473 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 337 places, 306 transitions, 1510 flow, removed 2 selfloop flow, removed 11 redundant places. [2022-11-16 12:41:39,479 INFO L231 Difference]: Finished difference. Result has 339 places, 294 transitions, 1309 flow [2022-11-16 12:41:39,480 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=1222, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1309, PETRI_PLACES=339, PETRI_TRANSITIONS=294} [2022-11-16 12:41:39,481 INFO L288 CegarLoopForPetriNet]: 235 programPoint places, 104 predicate places. [2022-11-16 12:41:39,481 INFO L495 AbstractCegarLoop]: Abstraction has has 339 places, 294 transitions, 1309 flow [2022-11-16 12:41:39,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 175.05555555555554) internal successors, (3151), 18 states have internal predecessors, (3151), 0 states have call successors, (0), 0 states 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 12:41:39,482 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:41:39,483 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:41:39,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-16 12:41:39,483 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2022-11-16 12:41:39,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:41:39,484 INFO L85 PathProgramCache]: Analyzing trace with hash 678632843, now seen corresponding path program 1 times [2022-11-16 12:41:39,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:41:39,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688072468] [2022-11-16 12:41:39,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:41:39,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:41:39,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:43,374 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:41:43,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:41:43,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688072468] [2022-11-16 12:41:43,375 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688072468] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:41:43,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [177915832] [2022-11-16 12:41:43,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:41:43,376 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:41:43,376 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2d4d54-19ca-4b7e-93c0-dccaa1a039eb/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:41:43,383 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2d4d54-19ca-4b7e-93c0-dccaa1a039eb/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:41:43,399 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2d4d54-19ca-4b7e-93c0-dccaa1a039eb/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 12:41:43,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:43,562 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 71 conjunts are in the unsatisfiable core [2022-11-16 12:41:43,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:41:43,880 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-16 12:41:43,881 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 12:41:44,229 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 12:41:44,346 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 23 treesize of output 22 [2022-11-16 12:41:44,954 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 25 treesize of output 25 [2022-11-16 12:41:45,667 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:41:45,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:41:45,693 INFO L321 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2022-11-16 12:41:45,693 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 39 [2022-11-16 12:41:46,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:41:46,073 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:41:46,075 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 30 [2022-11-16 12:41:46,695 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 30 [2022-11-16 12:41:46,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:41:46,908 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 25 treesize of output 25 [2022-11-16 12:41:47,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:41:47,343 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:41:47,366 INFO L321 Elim1Store]: treesize reduction 46, result has 27.0 percent of original size [2022-11-16 12:41:47,366 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 37 [2022-11-16 12:41:47,429 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2022-11-16 12:41:47,438 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:41:47,439 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:41:48,427 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_345 Int) (v_ArrVal_343 Int) (|v_t1Thread1of1ForFork0_enqueue_#t~mem36#1_12| Int) (v_ArrVal_344 (Array Int Int))) (let ((.cse0 (select (store (store |c_#memory_int| |c_t1Thread1of1ForFork0_enqueue_~q#1.base| (store (select |c_#memory_int| |c_t1Thread1of1ForFork0_enqueue_~q#1.base|) (+ |c_t1Thread1of1ForFork0_enqueue_~q#1.offset| 1604) v_ArrVal_343)) |c_~#stored_elements~0.base| v_ArrVal_344) |c_~#queue~0.base|))) (or (not (<= v_ArrVal_343 (+ 1 |c_t1Thread1of1ForFork0_enqueue_#t~post41#1|))) (< (select (store .cse0 (+ |c_~#queue~0.offset| (* 4 |v_t1Thread1of1ForFork0_enqueue_#t~mem36#1_12|)) v_ArrVal_345) (+ 1608 |c_~#queue~0.offset|)) 2147483647) (not (<= |v_t1Thread1of1ForFork0_enqueue_#t~mem36#1_12| (select .cse0 (+ |c_~#queue~0.offset| 1604))))))) is different from false [2022-11-16 12:41:48,506 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_345 Int) (v_ArrVal_343 Int) (|v_t1Thread1of1ForFork0_enqueue_#t~mem36#1_12| Int) (v_ArrVal_344 (Array Int Int))) (let ((.cse0 (select (store (store |c_#memory_int| |c_t1Thread1of1ForFork0_enqueue_~q#1.base| (store (select |c_#memory_int| |c_t1Thread1of1ForFork0_enqueue_~q#1.base|) (+ |c_t1Thread1of1ForFork0_enqueue_~q#1.offset| 1604) v_ArrVal_343)) |c_~#stored_elements~0.base| v_ArrVal_344) |c_~#queue~0.base|))) (or (< (select (store .cse0 (+ |c_~#queue~0.offset| (* 4 |v_t1Thread1of1ForFork0_enqueue_#t~mem36#1_12|)) v_ArrVal_345) (+ 1608 |c_~#queue~0.offset|)) 2147483647) (< (+ |c_t1Thread1of1ForFork0_enqueue_#t~mem40#1| 1) v_ArrVal_343) (not (<= |v_t1Thread1of1ForFork0_enqueue_#t~mem36#1_12| (select .cse0 (+ |c_~#queue~0.offset| 1604))))))) is different from false [2022-11-16 12:41:48,547 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_345 Int) (v_ArrVal_343 Int) (|v_t1Thread1of1ForFork0_enqueue_#t~mem36#1_12| Int) (v_ArrVal_344 (Array Int Int))) (let ((.cse1 (select |c_#memory_int| |c_t1Thread1of1ForFork0_enqueue_~q#1.base|)) (.cse2 (+ |c_t1Thread1of1ForFork0_enqueue_~q#1.offset| 1604))) (let ((.cse0 (select (store (store |c_#memory_int| |c_t1Thread1of1ForFork0_enqueue_~q#1.base| (store .cse1 .cse2 v_ArrVal_343)) |c_~#stored_elements~0.base| v_ArrVal_344) |c_~#queue~0.base|))) (or (< (select (store .cse0 (+ |c_~#queue~0.offset| (* 4 |v_t1Thread1of1ForFork0_enqueue_#t~mem36#1_12|)) v_ArrVal_345) (+ 1608 |c_~#queue~0.offset|)) 2147483647) (not (<= |v_t1Thread1of1ForFork0_enqueue_#t~mem36#1_12| (select .cse0 (+ |c_~#queue~0.offset| 1604)))) (< (+ (select .cse1 .cse2) 1) v_ArrVal_343))))) is different from false [2022-11-16 12:41:55,735 WARN L833 $PredicateComparison]: unable to prove that (forall ((|v_t1Thread1of1ForFork0_enqueue_#t~mem36#1_15| Int)) (let ((.cse5 (select |c_#memory_int| |c_t1Thread1of1ForFork0_enqueue_~q#1.base|)) (.cse4 (+ |c_t1Thread1of1ForFork0_enqueue_~q#1.offset| 1604))) (or (forall ((v_ArrVal_345 Int) (v_ArrVal_343 Int) (v_ArrVal_341 Int) (|v_t1Thread1of1ForFork0_enqueue_#t~mem36#1_12| Int) (v_ArrVal_344 (Array Int Int)) (v_ArrVal_338 Int)) (let ((.cse2 (store .cse5 (+ (* 4 |v_t1Thread1of1ForFork0_enqueue_#t~mem36#1_15|) |c_t1Thread1of1ForFork0_enqueue_~q#1.offset|) v_ArrVal_338)) (.cse3 (+ 1608 |c_t1Thread1of1ForFork0_enqueue_~q#1.offset|))) (let ((.cse0 (select (store (store |c_#memory_int| |c_t1Thread1of1ForFork0_enqueue_~q#1.base| (store (store .cse2 .cse3 v_ArrVal_341) .cse4 v_ArrVal_343)) |c_~#stored_elements~0.base| v_ArrVal_344) |c_~#queue~0.base|)) (.cse1 (select .cse2 .cse4))) (or (< (select (store .cse0 (+ |c_~#queue~0.offset| (* 4 |v_t1Thread1of1ForFork0_enqueue_#t~mem36#1_12|)) v_ArrVal_345) (+ 1608 |c_~#queue~0.offset|)) 2147483647) (not (<= |v_t1Thread1of1ForFork0_enqueue_#t~mem36#1_12| (select .cse0 (+ |c_~#queue~0.offset| 1604)))) (< (+ .cse1 1) v_ArrVal_343) (= 400 .cse1) (< (+ (select .cse2 .cse3) 1) v_ArrVal_341))))) (not (<= |v_t1Thread1of1ForFork0_enqueue_#t~mem36#1_15| (select .cse5 .cse4)))))) is different from false [2022-11-16 12:41:55,885 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_345 Int) (v_ArrVal_343 Int) (v_ArrVal_341 Int) (|v_t1Thread1of1ForFork0_enqueue_#t~mem36#1_12| Int) (|v_t1Thread1of1ForFork0_enqueue_#t~mem36#1_15| Int) (v_ArrVal_344 (Array Int Int)) (v_ArrVal_338 Int)) (let ((.cse2 (select |c_#memory_int| |c_t1Thread1of1ForFork0_enqueue_#in~q#1.base|))) (let ((.cse1 (+ 1608 |c_t1Thread1of1ForFork0_enqueue_#in~q#1.offset|)) (.cse0 (store .cse2 (+ (* 4 |v_t1Thread1of1ForFork0_enqueue_#t~mem36#1_15|) |c_t1Thread1of1ForFork0_enqueue_#in~q#1.offset|) v_ArrVal_338)) (.cse3 (+ |c_t1Thread1of1ForFork0_enqueue_#in~q#1.offset| 1604))) (let ((.cse4 (select .cse0 .cse3)) (.cse5 (select (store (store |c_#memory_int| |c_t1Thread1of1ForFork0_enqueue_#in~q#1.base| (store (store .cse0 .cse1 v_ArrVal_341) .cse3 v_ArrVal_343)) |c_~#stored_elements~0.base| v_ArrVal_344) |c_~#queue~0.base|))) (or (< (+ (select .cse0 .cse1) 1) v_ArrVal_341) (not (<= |v_t1Thread1of1ForFork0_enqueue_#t~mem36#1_15| (select .cse2 .cse3))) (< (+ .cse4 1) v_ArrVal_343) (= 400 .cse4) (< (select (store .cse5 (+ |c_~#queue~0.offset| (* 4 |v_t1Thread1of1ForFork0_enqueue_#t~mem36#1_12|)) v_ArrVal_345) (+ 1608 |c_~#queue~0.offset|)) 2147483647) (not (<= |v_t1Thread1of1ForFork0_enqueue_#t~mem36#1_12| (select .cse5 (+ |c_~#queue~0.offset| 1604))))))))) is different from false [2022-11-16 12:42:10,397 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_337 (Array Int Int)) (v_ArrVal_345 Int) (v_ArrVal_343 Int) (v_ArrVal_341 Int) (|v_t1Thread1of1ForFork0_enqueue_#t~mem36#1_12| Int) (|v_t1Thread1of1ForFork0_enqueue_#t~mem36#1_15| Int) (v_ArrVal_344 (Array Int Int)) (v_ArrVal_338 Int) (v_ArrVal_336 Int)) (let ((.cse6 (store (store |c_#memory_int| |c_ULTIMATE.start_init_~q#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_init_~q#1.base|) (+ 1608 |c_ULTIMATE.start_init_~q#1.offset|) v_ArrVal_336)) |c_ULTIMATE.start_main_~#id1~0#1.base| v_ArrVal_337))) (let ((.cse4 (select .cse6 |c_~#queue~0.base|))) (let ((.cse5 (store .cse4 (+ (* 4 |v_t1Thread1of1ForFork0_enqueue_#t~mem36#1_15|) |c_~#queue~0.offset|) v_ArrVal_338)) (.cse3 (+ 1608 |c_~#queue~0.offset|)) (.cse2 (+ |c_~#queue~0.offset| 1604))) (let ((.cse1 (select (store (store .cse6 |c_~#queue~0.base| (store (store .cse5 .cse3 v_ArrVal_341) .cse2 v_ArrVal_343)) |c_~#stored_elements~0.base| v_ArrVal_344) |c_~#queue~0.base|)) (.cse0 (select .cse5 .cse2))) (or (not (<= v_ArrVal_336 0)) (< (+ .cse0 1) v_ArrVal_343) (not (<= |v_t1Thread1of1ForFork0_enqueue_#t~mem36#1_12| (select .cse1 .cse2))) (< (select (store .cse1 (+ |c_~#queue~0.offset| (* 4 |v_t1Thread1of1ForFork0_enqueue_#t~mem36#1_12|)) v_ArrVal_345) .cse3) 2147483647) (not (<= |v_t1Thread1of1ForFork0_enqueue_#t~mem36#1_15| (select .cse4 .cse2))) (< (+ (select .cse5 .cse3) 1) v_ArrVal_341) (= 400 .cse0))))))) is different from false [2022-11-16 12:42:10,454 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:42:10,455 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 283 treesize of output 183 [2022-11-16 12:42:10,483 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:42:10,483 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 349 treesize of output 343 [2022-11-16 12:42:10,515 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 167 treesize of output 151 [2022-11-16 12:42:10,538 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 183 treesize of output 167 [2022-11-16 12:42:10,620 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2022-11-16 12:42:10,994 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:42:10,995 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 242 treesize of output 254 [2022-11-16 12:42:13,383 INFO L321 Elim1Store]: treesize reduction 5, result has 80.0 percent of original size [2022-11-16 12:42:13,383 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 25 treesize of output 38 [2022-11-16 12:42:13,475 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 5 not checked. [2022-11-16 12:42:13,476 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [177915832] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:42:13,476 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:42:13,476 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 27, 29] total 80 [2022-11-16 12:42:13,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398718362] [2022-11-16 12:42:13,476 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:42:13,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 81 states [2022-11-16 12:42:13,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:42:13,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2022-11-16 12:42:13,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=632, Invalid=4886, Unknown=56, NotChecked=906, Total=6480 [2022-11-16 12:42:13,489 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 253 [2022-11-16 12:42:13,500 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 294 transitions, 1309 flow. Second operand has 81 states, 81 states have (on average 160.17283950617283) internal successors, (12974), 81 states have internal predecessors, (12974), 0 states have call successors, (0), 0 states 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 12:42:13,500 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:42:13,500 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 253 [2022-11-16 12:42:13,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:43:50,348 WARN L233 SmtUtils]: Spent 27.10s on a formula simplification. DAG size of input: 76 DAG size of output: 73 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)