./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread/queue_ok_longest.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_b9e9f22d-1d03-4a5b-8508-6e38cd85fe81/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e9f22d-1d03-4a5b-8508-6e38cd85fe81/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_b9e9f22d-1d03-4a5b-8508-6e38cd85fe81/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e9f22d-1d03-4a5b-8508-6e38cd85fe81/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/queue_ok_longest.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e9f22d-1d03-4a5b-8508-6e38cd85fe81/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_b9e9f22d-1d03-4a5b-8508-6e38cd85fe81/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 0e9bc4a9a6dcd238ac18925269a0bd7c8c54c2dafb57744151e37b58cf6eab8d --- 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 11:56:56,476 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:56:56,478 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:56:56,497 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:56:56,498 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:56:56,499 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:56:56,500 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:56:56,502 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:56:56,503 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:56:56,504 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:56:56,505 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:56:56,507 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:56:56,507 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:56:56,508 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:56:56,509 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:56:56,511 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:56:56,512 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:56:56,513 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:56:56,514 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:56:56,516 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:56:56,518 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:56:56,519 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:56:56,520 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:56:56,521 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:56:56,524 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:56:56,525 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:56:56,525 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:56:56,526 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:56:56,527 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:56:56,528 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:56:56,528 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:56:56,529 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:56:56,530 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:56:56,531 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:56:56,532 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:56:56,532 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:56:56,533 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:56:56,534 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:56:56,534 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:56:56,535 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:56:56,536 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:56:56,537 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e9f22d-1d03-4a5b-8508-6e38cd85fe81/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-16 11:56:56,565 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:56:56,566 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:56:56,567 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:56:56,567 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:56:56,569 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 11:56:56,569 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 11:56:56,570 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:56:56,570 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:56:56,571 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:56:56,571 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:56:56,572 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 11:56:56,572 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 11:56:56,573 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 11:56:56,573 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 11:56:56,573 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:56:56,573 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 11:56:56,573 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 11:56:56,574 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 11:56:56,574 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-16 11:56:56,574 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 11:56:56,574 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 11:56:56,575 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:56:56,575 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 11:56:56,575 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:56:56,575 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:56:56,576 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 11:56:56,576 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:56:56,576 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:56:56,577 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 11:56:56,577 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 11:56:56,577 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 11:56:56,577 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 11:56:56,578 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 11:56:56,578 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 11:56:56,578 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 11:56:56,578 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_b9e9f22d-1d03-4a5b-8508-6e38cd85fe81/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e9f22d-1d03-4a5b-8508-6e38cd85fe81/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0e9bc4a9a6dcd238ac18925269a0bd7c8c54c2dafb57744151e37b58cf6eab8d [2022-11-16 11:56:56,867 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:56:56,897 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:56:56,901 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:56:56,902 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:56:56,903 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:56:56,904 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e9f22d-1d03-4a5b-8508-6e38cd85fe81/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/pthread/queue_ok_longest.i [2022-11-16 11:56:56,967 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e9f22d-1d03-4a5b-8508-6e38cd85fe81/bin/uautomizer-tPACEb0tL8/data/35aa93e44/5c84fe80f28747f8a16b19c591de3596/FLAG926eff26b [2022-11-16 11:56:57,516 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:56:57,516 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e9f22d-1d03-4a5b-8508-6e38cd85fe81/sv-benchmarks/c/pthread/queue_ok_longest.i [2022-11-16 11:56:57,543 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e9f22d-1d03-4a5b-8508-6e38cd85fe81/bin/uautomizer-tPACEb0tL8/data/35aa93e44/5c84fe80f28747f8a16b19c591de3596/FLAG926eff26b [2022-11-16 11:56:57,795 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e9f22d-1d03-4a5b-8508-6e38cd85fe81/bin/uautomizer-tPACEb0tL8/data/35aa93e44/5c84fe80f28747f8a16b19c591de3596 [2022-11-16 11:56:57,799 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:56:57,802 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:56:57,805 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:56:57,805 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:56:57,809 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:56:57,810 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:56:57" (1/1) ... [2022-11-16 11:56:57,811 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e8d9286 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:56:57, skipping insertion in model container [2022-11-16 11:56:57,811 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:56:57" (1/1) ... [2022-11-16 11:56:57,820 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:56:57,874 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:56:58,406 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_b9e9f22d-1d03-4a5b-8508-6e38cd85fe81/sv-benchmarks/c/pthread/queue_ok_longest.i[43280,43293] [2022-11-16 11:56:58,409 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_b9e9f22d-1d03-4a5b-8508-6e38cd85fe81/sv-benchmarks/c/pthread/queue_ok_longest.i[43553,43566] [2022-11-16 11:56:58,413 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:56:58,426 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 11:56:58,483 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_b9e9f22d-1d03-4a5b-8508-6e38cd85fe81/sv-benchmarks/c/pthread/queue_ok_longest.i[43280,43293] [2022-11-16 11:56:58,486 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_b9e9f22d-1d03-4a5b-8508-6e38cd85fe81/sv-benchmarks/c/pthread/queue_ok_longest.i[43553,43566] [2022-11-16 11:56:58,490 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:56:58,550 INFO L208 MainTranslator]: Completed translation [2022-11-16 11:56:58,550 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:56:58 WrapperNode [2022-11-16 11:56:58,550 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:56:58,552 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 11:56:58,552 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 11:56:58,552 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 11:56:58,563 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:56:58" (1/1) ... [2022-11-16 11:56:58,585 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:56:58" (1/1) ... [2022-11-16 11:56:58,617 INFO L138 Inliner]: procedures = 274, calls = 59, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 216 [2022-11-16 11:56:58,618 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 11:56:58,619 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 11:56:58,619 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 11:56:58,619 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 11:56:58,627 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:56:58" (1/1) ... [2022-11-16 11:56:58,627 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:56:58" (1/1) ... [2022-11-16 11:56:58,637 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:56:58" (1/1) ... [2022-11-16 11:56:58,638 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:56:58" (1/1) ... [2022-11-16 11:56:58,651 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:56:58" (1/1) ... [2022-11-16 11:56:58,663 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:56:58" (1/1) ... [2022-11-16 11:56:58,665 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:56:58" (1/1) ... [2022-11-16 11:56:58,667 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:56:58" (1/1) ... [2022-11-16 11:56:58,670 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 11:56:58,671 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 11:56:58,671 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 11:56:58,671 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 11:56:58,681 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:56:58" (1/1) ... [2022-11-16 11:56:58,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:56:58,700 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e9f22d-1d03-4a5b-8508-6e38cd85fe81/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:56:58,713 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e9f22d-1d03-4a5b-8508-6e38cd85fe81/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 11:56:58,724 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e9f22d-1d03-4a5b-8508-6e38cd85fe81/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 11:56:58,755 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2022-11-16 11:56:58,755 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2022-11-16 11:56:58,756 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2022-11-16 11:56:58,756 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2022-11-16 11:56:58,756 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 11:56:58,756 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 11:56:58,756 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 11:56:58,756 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 11:56:58,756 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-16 11:56:58,757 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 11:56:58,757 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 11:56:58,757 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 11:56:58,757 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 11:56:58,759 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 11:56:58,906 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 11:56:58,909 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 11:56:59,403 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 11:56:59,414 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 11:56:59,415 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-16 11:56:59,417 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:56:59 BoogieIcfgContainer [2022-11-16 11:56:59,418 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 11:56:59,420 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 11:56:59,420 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 11:56:59,433 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 11:56:59,433 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:56:57" (1/3) ... [2022-11-16 11:56:59,434 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19f0f7d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:56:59, skipping insertion in model container [2022-11-16 11:56:59,434 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:56:58" (2/3) ... [2022-11-16 11:56:59,435 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19f0f7d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:56:59, skipping insertion in model container [2022-11-16 11:56:59,435 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:56:59" (3/3) ... [2022-11-16 11:56:59,436 INFO L112 eAbstractionObserver]: Analyzing ICFG queue_ok_longest.i [2022-11-16 11:56:59,444 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 11:56:59,454 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 11:56:59,454 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2022-11-16 11:56:59,454 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 11:56:59,577 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-16 11:56:59,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 247 places, 253 transitions, 522 flow [2022-11-16 11:56:59,758 INFO L130 PetriNetUnfolder]: 13/251 cut-off events. [2022-11-16 11:56:59,758 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-16 11:56:59,766 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 11:56:59,767 INFO L82 GeneralOperation]: Start removeDead. Operand has 247 places, 253 transitions, 522 flow [2022-11-16 11:56:59,781 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 235 places, 241 transitions, 491 flow [2022-11-16 11:56:59,797 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:56:59,810 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;@4365bf0d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:56:59,811 INFO L358 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2022-11-16 11:56:59,845 INFO L130 PetriNetUnfolder]: 6/141 cut-off events. [2022-11-16 11:56:59,847 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-16 11:56:59,847 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:56:59,848 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 11:56:59,850 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 11:56:59,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:56:59,855 INFO L85 PathProgramCache]: Analyzing trace with hash 1690176019, now seen corresponding path program 1 times [2022-11-16 11:56:59,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:56:59,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561874988] [2022-11-16 11:56:59,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:56:59,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:57:00,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:01,309 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 11:57:01,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:57:01,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561874988] [2022-11-16 11:57:01,311 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561874988] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:57:01,312 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:57:01,312 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-16 11:57:01,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602040451] [2022-11-16 11:57:01,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:57:01,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 11:57:01,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:57:01,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 11:57:01,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-11-16 11:57:01,385 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 253 [2022-11-16 11:57:01,396 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 11:57:01,396 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:57:01,396 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 253 [2022-11-16 11:57:01,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:57:02,658 INFO L130 PetriNetUnfolder]: 611/2942 cut-off events. [2022-11-16 11:57:02,659 INFO L131 PetriNetUnfolder]: For 88/91 co-relation queries the response was YES. [2022-11-16 11:57:02,673 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 11:57:02,689 INFO L137 encePairwiseOnDemand]: 236/253 looper letters, 42 selfloop transitions, 12 changer transitions 0/229 dead transitions. [2022-11-16 11:57:02,689 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 229 transitions, 575 flow [2022-11-16 11:57:02,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-16 11:57:02,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-16 11:57:02,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2503 transitions. [2022-11-16 11:57:02,716 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7610215871085436 [2022-11-16 11:57:02,717 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2503 transitions. [2022-11-16 11:57:02,718 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2503 transitions. [2022-11-16 11:57:02,723 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:57:02,725 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2503 transitions. [2022-11-16 11:57:02,736 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 11:57:02,749 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 11:57:02,752 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 11:57:02,754 INFO L175 Difference]: Start difference. First operand has 235 places, 241 transitions, 491 flow. Second operand 13 states and 2503 transitions. [2022-11-16 11:57:02,755 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 229 transitions, 575 flow [2022-11-16 11:57:02,761 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 11:57:02,767 INFO L231 Difference]: Finished difference. Result has 237 places, 229 transitions, 486 flow [2022-11-16 11:57:02,769 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 11:57:02,777 INFO L288 CegarLoopForPetriNet]: 235 programPoint places, 2 predicate places. [2022-11-16 11:57:02,777 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 229 transitions, 486 flow [2022-11-16 11:57:02,779 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 11:57:02,779 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:57:02,780 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 11:57:02,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 11:57:02,780 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 11:57:02,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:57:02,781 INFO L85 PathProgramCache]: Analyzing trace with hash -1891215175, now seen corresponding path program 1 times [2022-11-16 11:57:02,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:57:02,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033370216] [2022-11-16 11:57:02,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:57:02,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:57:02,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:14,921 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 11:57:14,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:57:14,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033370216] [2022-11-16 11:57:14,922 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033370216] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:57:14,922 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:57:14,923 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-16 11:57:14,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642731856] [2022-11-16 11:57:14,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:57:14,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-16 11:57:14,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:57:14,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-16 11:57:14,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=317, Unknown=0, NotChecked=0, Total=380 [2022-11-16 11:57:14,930 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 253 [2022-11-16 11:57:14,943 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 11:57:14,944 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:57:14,944 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 253 [2022-11-16 11:57:14,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:57:25,492 INFO L130 PetriNetUnfolder]: 1370/5730 cut-off events. [2022-11-16 11:57:25,492 INFO L131 PetriNetUnfolder]: For 30/33 co-relation queries the response was YES. [2022-11-16 11:57:25,507 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 11:57:25,531 INFO L137 encePairwiseOnDemand]: 231/253 looper letters, 108 selfloop transitions, 28 changer transitions 0/301 dead transitions. [2022-11-16 11:57:25,532 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 301 transitions, 908 flow [2022-11-16 11:57:25,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-16 11:57:25,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-16 11:57:25,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 3899 transitions. [2022-11-16 11:57:25,541 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7338603425559947 [2022-11-16 11:57:25,542 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 3899 transitions. [2022-11-16 11:57:25,542 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 3899 transitions. [2022-11-16 11:57:25,544 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:57:25,545 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 3899 transitions. [2022-11-16 11:57:25,554 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 11:57:25,564 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 11:57:25,567 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 11:57:25,567 INFO L175 Difference]: Start difference. First operand has 237 places, 229 transitions, 486 flow. Second operand 21 states and 3899 transitions. [2022-11-16 11:57:25,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 301 transitions, 908 flow [2022-11-16 11:57:25,574 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 11:57:25,583 INFO L231 Difference]: Finished difference. Result has 255 places, 250 transitions, 622 flow [2022-11-16 11:57:25,584 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 11:57:25,584 INFO L288 CegarLoopForPetriNet]: 235 programPoint places, 20 predicate places. [2022-11-16 11:57:25,585 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 250 transitions, 622 flow [2022-11-16 11:57:25,587 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 11:57:25,587 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:57:25,588 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 11:57:25,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 11:57:25,589 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 11:57:25,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:57:25,591 INFO L85 PathProgramCache]: Analyzing trace with hash -2006777373, now seen corresponding path program 1 times [2022-11-16 11:57:25,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:57:25,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113563258] [2022-11-16 11:57:25,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:57:25,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:57:25,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:27,802 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 11:57:27,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:57:27,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113563258] [2022-11-16 11:57:27,803 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113563258] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:57:27,803 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:57:27,803 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-16 11:57:27,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356935641] [2022-11-16 11:57:27,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:57:27,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-16 11:57:27,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:57:27,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-16 11:57:27,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=311, Unknown=0, NotChecked=0, Total=380 [2022-11-16 11:57:27,810 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 253 [2022-11-16 11:57:27,814 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 11:57:27,814 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:57:27,814 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 253 [2022-11-16 11:57:27,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:57:31,254 INFO L130 PetriNetUnfolder]: 2208/7485 cut-off events. [2022-11-16 11:57:31,254 INFO L131 PetriNetUnfolder]: For 872/879 co-relation queries the response was YES. [2022-11-16 11:57:31,282 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 11:57:31,310 INFO L137 encePairwiseOnDemand]: 231/253 looper letters, 210 selfloop transitions, 44 changer transitions 0/411 dead transitions. [2022-11-16 11:57:31,310 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 411 transitions, 1511 flow [2022-11-16 11:57:31,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-16 11:57:31,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-11-16 11:57:31,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 3960 transitions. [2022-11-16 11:57:31,325 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7114624505928854 [2022-11-16 11:57:31,325 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 3960 transitions. [2022-11-16 11:57:31,325 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 3960 transitions. [2022-11-16 11:57:31,328 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:57:31,328 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 3960 transitions. [2022-11-16 11:57:31,337 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 11:57:31,348 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 11:57:31,351 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 11:57:31,352 INFO L175 Difference]: Start difference. First operand has 255 places, 250 transitions, 622 flow. Second operand 22 states and 3960 transitions. [2022-11-16 11:57:31,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 411 transitions, 1511 flow [2022-11-16 11:57:31,366 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 11:57:31,372 INFO L231 Difference]: Finished difference. Result has 275 places, 279 transitions, 865 flow [2022-11-16 11:57:31,373 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 11:57:31,375 INFO L288 CegarLoopForPetriNet]: 235 programPoint places, 40 predicate places. [2022-11-16 11:57:31,376 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 279 transitions, 865 flow [2022-11-16 11:57:31,377 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 11:57:31,378 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:57:31,378 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 11:57:31,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 11:57:31,378 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 11:57:31,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:57:31,380 INFO L85 PathProgramCache]: Analyzing trace with hash 1882764851, now seen corresponding path program 1 times [2022-11-16 11:57:31,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:57:31,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411385378] [2022-11-16 11:57:31,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:57:31,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:57:31,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:31,461 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 11:57:31,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:57:31,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411385378] [2022-11-16 11:57:31,466 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411385378] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:57:31,466 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:57:31,467 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:57:31,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407306454] [2022-11-16 11:57:31,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:57:31,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:57:31,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:57:31,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:57:31,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:57:31,472 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 233 out of 253 [2022-11-16 11:57:31,473 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 11:57:31,473 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:57:31,474 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 233 of 253 [2022-11-16 11:57:31,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:57:32,190 INFO L130 PetriNetUnfolder]: 220/3317 cut-off events. [2022-11-16 11:57:32,191 INFO L131 PetriNetUnfolder]: For 227/229 co-relation queries the response was YES. [2022-11-16 11:57:32,211 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 11:57:32,228 INFO L137 encePairwiseOnDemand]: 248/253 looper letters, 15 selfloop transitions, 4 changer transitions 0/286 dead transitions. [2022-11-16 11:57:32,228 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 286 transitions, 919 flow [2022-11-16 11:57:32,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:57:32,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 11:57:32,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 952 transitions. [2022-11-16 11:57:32,233 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9407114624505929 [2022-11-16 11:57:32,234 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 952 transitions. [2022-11-16 11:57:32,234 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 952 transitions. [2022-11-16 11:57:32,238 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:57:32,238 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 952 transitions. [2022-11-16 11:57:32,241 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 11:57:32,243 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 11:57:32,244 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 11:57:32,245 INFO L175 Difference]: Start difference. First operand has 275 places, 279 transitions, 865 flow. Second operand 4 states and 952 transitions. [2022-11-16 11:57:32,246 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 286 transitions, 919 flow [2022-11-16 11:57:32,254 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 11:57:32,259 INFO L231 Difference]: Finished difference. Result has 272 places, 282 transitions, 860 flow [2022-11-16 11:57:32,264 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 11:57:32,266 INFO L288 CegarLoopForPetriNet]: 235 programPoint places, 37 predicate places. [2022-11-16 11:57:32,266 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 282 transitions, 860 flow [2022-11-16 11:57:32,267 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 11:57:32,267 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:57:32,267 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 11:57:32,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 11:57:32,268 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 11:57:32,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:57:32,268 INFO L85 PathProgramCache]: Analyzing trace with hash -752846262, now seen corresponding path program 1 times [2022-11-16 11:57:32,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:57:32,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571074136] [2022-11-16 11:57:32,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:57:32,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:57:32,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:32,364 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 11:57:32,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:57:32,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571074136] [2022-11-16 11:57:32,365 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571074136] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:57:32,366 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:57:32,366 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:57:32,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702729135] [2022-11-16 11:57:32,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:57:32,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:57:32,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:57:32,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:57:32,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:57:32,370 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 230 out of 253 [2022-11-16 11:57:32,372 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 11:57:32,372 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:57:32,372 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 230 of 253 [2022-11-16 11:57:32,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:57:33,336 INFO L130 PetriNetUnfolder]: 372/4923 cut-off events. [2022-11-16 11:57:33,337 INFO L131 PetriNetUnfolder]: For 323/333 co-relation queries the response was YES. [2022-11-16 11:57:33,376 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 11:57:33,390 INFO L137 encePairwiseOnDemand]: 246/253 looper letters, 21 selfloop transitions, 4 changer transitions 0/292 dead transitions. [2022-11-16 11:57:33,390 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 292 transitions, 933 flow [2022-11-16 11:57:33,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:57:33,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:57:33,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1178 transitions. [2022-11-16 11:57:33,394 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9312252964426877 [2022-11-16 11:57:33,394 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1178 transitions. [2022-11-16 11:57:33,394 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1178 transitions. [2022-11-16 11:57:33,395 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:57:33,396 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1178 transitions. [2022-11-16 11:57:33,398 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 11:57:33,402 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 11:57:33,411 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 11:57:33,415 INFO L175 Difference]: Start difference. First operand has 272 places, 282 transitions, 860 flow. Second operand 5 states and 1178 transitions. [2022-11-16 11:57:33,415 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 292 transitions, 933 flow [2022-11-16 11:57:33,423 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 11:57:33,426 INFO L231 Difference]: Finished difference. Result has 278 places, 285 transitions, 890 flow [2022-11-16 11:57:33,427 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 11:57:33,428 INFO L288 CegarLoopForPetriNet]: 235 programPoint places, 43 predicate places. [2022-11-16 11:57:33,428 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 285 transitions, 890 flow [2022-11-16 11:57:33,429 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 11:57:33,429 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:57:33,430 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 11:57:33,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 11:57:33,430 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 11:57:33,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:57:33,431 INFO L85 PathProgramCache]: Analyzing trace with hash 1672081442, now seen corresponding path program 1 times [2022-11-16 11:57:33,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:57:33,431 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873578918] [2022-11-16 11:57:33,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:57:33,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:57:33,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:36,526 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 11:57:36,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:57:36,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873578918] [2022-11-16 11:57:36,526 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873578918] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:57:36,527 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:57:36,527 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-16 11:57:36,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164730108] [2022-11-16 11:57:36,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:57:36,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-16 11:57:36,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:57:36,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-16 11:57:36,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=310, Unknown=0, NotChecked=0, Total=380 [2022-11-16 11:57:36,532 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 253 [2022-11-16 11:57:36,535 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 11:57:36,535 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:57:36,535 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 253 [2022-11-16 11:57:36,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:57:42,619 INFO L130 PetriNetUnfolder]: 6627/24233 cut-off events. [2022-11-16 11:57:42,619 INFO L131 PetriNetUnfolder]: For 4271/4338 co-relation queries the response was YES. [2022-11-16 11:57:42,740 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 11:57:42,823 INFO L137 encePairwiseOnDemand]: 230/253 looper letters, 134 selfloop transitions, 34 changer transitions 0/352 dead transitions. [2022-11-16 11:57:42,824 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 352 transitions, 1399 flow [2022-11-16 11:57:42,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-16 11:57:42,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-16 11:57:42,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 3903 transitions. [2022-11-16 11:57:42,833 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7346132128740824 [2022-11-16 11:57:42,833 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 3903 transitions. [2022-11-16 11:57:42,833 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 3903 transitions. [2022-11-16 11:57:42,835 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:57:42,836 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 3903 transitions. [2022-11-16 11:57:42,843 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 11:57:42,851 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 11:57:42,853 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 11:57:42,854 INFO L175 Difference]: Start difference. First operand has 278 places, 285 transitions, 890 flow. Second operand 21 states and 3903 transitions. [2022-11-16 11:57:42,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 352 transitions, 1399 flow [2022-11-16 11:57:42,919 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 11:57:42,925 INFO L231 Difference]: Finished difference. Result has 302 places, 295 transitions, 1035 flow [2022-11-16 11:57:42,925 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 11:57:42,928 INFO L288 CegarLoopForPetriNet]: 235 programPoint places, 67 predicate places. [2022-11-16 11:57:42,928 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 295 transitions, 1035 flow [2022-11-16 11:57:42,929 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 11:57:42,930 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:57:42,930 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 11:57:42,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 11:57:42,930 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 11:57:42,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:57:42,931 INFO L85 PathProgramCache]: Analyzing trace with hash 290237644, now seen corresponding path program 1 times [2022-11-16 11:57:42,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:57:42,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290028047] [2022-11-16 11:57:42,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:57:42,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:57:42,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:44,341 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 11:57:44,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:57:44,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290028047] [2022-11-16 11:57:44,341 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290028047] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:57:44,342 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:57:44,342 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-16 11:57:44,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086611449] [2022-11-16 11:57:44,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:57:44,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-16 11:57:44,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:57:44,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-16 11:57:44,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=272, Unknown=0, NotChecked=0, Total=342 [2022-11-16 11:57:44,346 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 253 [2022-11-16 11:57:44,352 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 11:57:44,353 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:57:44,353 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 253 [2022-11-16 11:57:44,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:57:50,492 INFO L130 PetriNetUnfolder]: 8330/30102 cut-off events. [2022-11-16 11:57:50,492 INFO L131 PetriNetUnfolder]: For 7594/7669 co-relation queries the response was YES. [2022-11-16 11:57:50,685 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 11:57:50,789 INFO L137 encePairwiseOnDemand]: 230/253 looper letters, 217 selfloop transitions, 59 changer transitions 0/452 dead transitions. [2022-11-16 11:57:50,789 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 452 transitions, 2043 flow [2022-11-16 11:57:50,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-16 11:57:50,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-16 11:57:50,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 3785 transitions. [2022-11-16 11:57:50,801 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.712403538490495 [2022-11-16 11:57:50,801 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 3785 transitions. [2022-11-16 11:57:50,801 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 3785 transitions. [2022-11-16 11:57:50,804 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:57:50,804 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 3785 transitions. [2022-11-16 11:57:50,812 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 11:57:50,821 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 11:57:50,823 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 11:57:50,823 INFO L175 Difference]: Start difference. First operand has 302 places, 295 transitions, 1035 flow. Second operand 21 states and 3785 transitions. [2022-11-16 11:57:50,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 452 transitions, 2043 flow [2022-11-16 11:57:51,046 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 11:57:51,051 INFO L231 Difference]: Finished difference. Result has 316 places, 319 transitions, 1339 flow [2022-11-16 11:57:51,052 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 11:57:51,053 INFO L288 CegarLoopForPetriNet]: 235 programPoint places, 81 predicate places. [2022-11-16 11:57:51,054 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 319 transitions, 1339 flow [2022-11-16 11:57:51,055 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 11:57:51,055 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:57:51,055 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 11:57:51,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 11:57:51,056 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 11:57:51,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:57:51,056 INFO L85 PathProgramCache]: Analyzing trace with hash 46439930, now seen corresponding path program 2 times [2022-11-16 11:57:51,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:57:51,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383950703] [2022-11-16 11:57:51,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:57:51,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:57:51,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:52,477 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 11:57:52,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:57:52,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383950703] [2022-11-16 11:57:52,478 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383950703] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:57:52,478 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:57:52,478 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-16 11:57:52,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30042977] [2022-11-16 11:57:52,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:57:52,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-16 11:57:52,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:57:52,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-16 11:57:52,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2022-11-16 11:57:52,482 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 253 [2022-11-16 11:57:52,484 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 11:57:52,485 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:57:52,485 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 253 [2022-11-16 11:57:52,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:57:59,521 INFO L130 PetriNetUnfolder]: 8948/32438 cut-off events. [2022-11-16 11:57:59,521 INFO L131 PetriNetUnfolder]: For 16762/16951 co-relation queries the response was YES. [2022-11-16 11:57:59,773 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 11:57:59,899 INFO L137 encePairwiseOnDemand]: 232/253 looper letters, 196 selfloop transitions, 64 changer transitions 0/436 dead transitions. [2022-11-16 11:57:59,899 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 436 transitions, 2178 flow [2022-11-16 11:57:59,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-16 11:57:59,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-16 11:57:59,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3253 transitions. [2022-11-16 11:57:59,906 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7143170838823013 [2022-11-16 11:57:59,907 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3253 transitions. [2022-11-16 11:57:59,907 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3253 transitions. [2022-11-16 11:57:59,909 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:57:59,909 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3253 transitions. [2022-11-16 11:57:59,916 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 11:57:59,924 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 11:57:59,925 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 11:57:59,926 INFO L175 Difference]: Start difference. First operand has 316 places, 319 transitions, 1339 flow. Second operand 18 states and 3253 transitions. [2022-11-16 11:57:59,926 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 436 transitions, 2178 flow [2022-11-16 11:58:00,215 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 11:58:00,222 INFO L231 Difference]: Finished difference. Result has 328 places, 327 transitions, 1552 flow [2022-11-16 11:58:00,223 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 11:58:00,226 INFO L288 CegarLoopForPetriNet]: 235 programPoint places, 93 predicate places. [2022-11-16 11:58:00,226 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 327 transitions, 1552 flow [2022-11-16 11:58:00,227 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 11:58:00,227 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:58:00,228 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 11:58:00,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 11:58:00,228 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 11:58:00,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:58:00,229 INFO L85 PathProgramCache]: Analyzing trace with hash -1705076601, now seen corresponding path program 1 times [2022-11-16 11:58:00,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:58:00,229 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702690294] [2022-11-16 11:58:00,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:58:00,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:58:00,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:58:00,360 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 11:58:00,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:58:00,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702690294] [2022-11-16 11:58:00,361 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702690294] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:58:00,361 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:58:00,361 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:58:00,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126075027] [2022-11-16 11:58:00,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:58:00,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:58:00,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:58:00,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:58:00,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:58:00,365 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 230 out of 253 [2022-11-16 11:58:00,366 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 11:58:00,367 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:58:00,367 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 230 of 253 [2022-11-16 11:58:00,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:58:01,855 INFO L130 PetriNetUnfolder]: 468/7502 cut-off events. [2022-11-16 11:58:01,855 INFO L131 PetriNetUnfolder]: For 1852/2142 co-relation queries the response was YES. [2022-11-16 11:58:01,902 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 11:58:01,920 INFO L137 encePairwiseOnDemand]: 246/253 looper letters, 21 selfloop transitions, 4 changer transitions 0/337 dead transitions. [2022-11-16 11:58:01,920 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 337 transitions, 1628 flow [2022-11-16 11:58:01,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:58:01,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:58:01,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1178 transitions. [2022-11-16 11:58:01,923 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9312252964426877 [2022-11-16 11:58:01,923 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1178 transitions. [2022-11-16 11:58:01,923 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1178 transitions. [2022-11-16 11:58:01,924 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:58:01,924 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1178 transitions. [2022-11-16 11:58:01,926 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 11:58:01,927 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 11:58:01,928 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 11:58:01,928 INFO L175 Difference]: Start difference. First operand has 328 places, 327 transitions, 1552 flow. Second operand 5 states and 1178 transitions. [2022-11-16 11:58:01,928 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 337 transitions, 1628 flow [2022-11-16 11:58:01,948 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 11:58:01,952 INFO L231 Difference]: Finished difference. Result has 325 places, 330 transitions, 1538 flow [2022-11-16 11:58:01,953 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 11:58:01,954 INFO L288 CegarLoopForPetriNet]: 235 programPoint places, 90 predicate places. [2022-11-16 11:58:01,954 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 330 transitions, 1538 flow [2022-11-16 11:58:01,954 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 11:58:01,955 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:58:01,955 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 11:58:01,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-16 11:58:01,955 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 11:58:01,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:58:01,956 INFO L85 PathProgramCache]: Analyzing trace with hash 1577829084, now seen corresponding path program 1 times [2022-11-16 11:58:01,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:58:01,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955855072] [2022-11-16 11:58:01,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:58:01,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:58:01,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:58:02,036 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 11:58:02,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:58:02,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955855072] [2022-11-16 11:58:02,037 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955855072] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:58:02,037 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:58:02,037 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:58:02,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439293276] [2022-11-16 11:58:02,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:58:02,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:58:02,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:58:02,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:58:02,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:58:02,042 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 236 out of 253 [2022-11-16 11:58:02,043 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 11:58:02,043 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:58:02,043 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 236 of 253 [2022-11-16 11:58:02,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:58:02,230 INFO L130 PetriNetUnfolder]: 50/976 cut-off events. [2022-11-16 11:58:02,230 INFO L131 PetriNetUnfolder]: For 402/403 co-relation queries the response was YES. [2022-11-16 11:58:02,234 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 11:58:02,235 INFO L137 encePairwiseOnDemand]: 249/253 looper letters, 7 selfloop transitions, 2 changer transitions 5/297 dead transitions. [2022-11-16 11:58:02,236 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 297 transitions, 1251 flow [2022-11-16 11:58:02,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:58:02,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 11:58:02,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 721 transitions. [2022-11-16 11:58:02,237 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9499341238471674 [2022-11-16 11:58:02,238 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 721 transitions. [2022-11-16 11:58:02,238 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 721 transitions. [2022-11-16 11:58:02,238 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:58:02,238 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 721 transitions. [2022-11-16 11:58:02,239 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 11:58:02,241 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 11:58:02,241 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 11:58:02,241 INFO L175 Difference]: Start difference. First operand has 325 places, 330 transitions, 1538 flow. Second operand 3 states and 721 transitions. [2022-11-16 11:58:02,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 297 transitions, 1251 flow [2022-11-16 11:58:02,249 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 11:58:02,253 INFO L231 Difference]: Finished difference. Result has 320 places, 291 transitions, 1195 flow [2022-11-16 11:58:02,254 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 11:58:02,255 INFO L288 CegarLoopForPetriNet]: 235 programPoint places, 85 predicate places. [2022-11-16 11:58:02,255 INFO L495 AbstractCegarLoop]: Abstraction has has 320 places, 291 transitions, 1195 flow [2022-11-16 11:58:02,256 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 11:58:02,256 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:58:02,256 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 11:58:02,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-16 11:58:02,256 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 11:58:02,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:58:02,257 INFO L85 PathProgramCache]: Analyzing trace with hash -858914285, now seen corresponding path program 1 times [2022-11-16 11:58:02,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:58:02,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964155562] [2022-11-16 11:58:02,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:58:02,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:58:02,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:58:03,588 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 11:58:03,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:58:03,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964155562] [2022-11-16 11:58:03,589 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964155562] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:58:03,589 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:58:03,589 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-11-16 11:58:03,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695110852] [2022-11-16 11:58:03,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:58:03,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-16 11:58:03,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:58:03,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-16 11:58:03,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2022-11-16 11:58:03,593 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 253 [2022-11-16 11:58:03,596 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 11:58:03,596 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:58:03,596 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 253 [2022-11-16 11:58:03,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:58:04,864 INFO L130 PetriNetUnfolder]: 331/2030 cut-off events. [2022-11-16 11:58:04,865 INFO L131 PetriNetUnfolder]: For 1030/1034 co-relation queries the response was YES. [2022-11-16 11:58:04,874 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 11:58:04,878 INFO L137 encePairwiseOnDemand]: 236/253 looper letters, 77 selfloop transitions, 30 changer transitions 0/299 dead transitions. [2022-11-16 11:58:04,878 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 299 transitions, 1423 flow [2022-11-16 11:58:04,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-16 11:58:04,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-16 11:58:04,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2829 transitions. [2022-11-16 11:58:04,884 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7454545454545455 [2022-11-16 11:58:04,884 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2829 transitions. [2022-11-16 11:58:04,885 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2829 transitions. [2022-11-16 11:58:04,886 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:58:04,886 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2829 transitions. [2022-11-16 11:58:04,892 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 11:58:04,897 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 11:58:04,899 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 11:58:04,899 INFO L175 Difference]: Start difference. First operand has 320 places, 291 transitions, 1195 flow. Second operand 15 states and 2829 transitions. [2022-11-16 11:58:04,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 299 transitions, 1423 flow [2022-11-16 11:58:04,909 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 11:58:04,915 INFO L231 Difference]: Finished difference. Result has 334 places, 294 transitions, 1281 flow [2022-11-16 11:58:04,915 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 11:58:04,916 INFO L288 CegarLoopForPetriNet]: 235 programPoint places, 99 predicate places. [2022-11-16 11:58:04,916 INFO L495 AbstractCegarLoop]: Abstraction has has 334 places, 294 transitions, 1281 flow [2022-11-16 11:58:04,917 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 11:58:04,917 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:58:04,917 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 11:58:04,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-16 11:58:04,918 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 11:58:04,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:58:04,918 INFO L85 PathProgramCache]: Analyzing trace with hash 751302825, now seen corresponding path program 1 times [2022-11-16 11:58:04,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:58:04,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936082447] [2022-11-16 11:58:04,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:58:04,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:58:04,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:58:06,738 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 11:58:06,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:58:06,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936082447] [2022-11-16 11:58:06,739 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936082447] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:58:06,739 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:58:06,739 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-16 11:58:06,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621048100] [2022-11-16 11:58:06,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:58:06,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-16 11:58:06,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:58:06,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-16 11:58:06,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2022-11-16 11:58:06,742 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 253 [2022-11-16 11:58:06,744 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 11:58:06,745 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:58:06,745 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 253 [2022-11-16 11:58:06,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:58:08,100 INFO L130 PetriNetUnfolder]: 317/1978 cut-off events. [2022-11-16 11:58:08,100 INFO L131 PetriNetUnfolder]: For 1122/1126 co-relation queries the response was YES. [2022-11-16 11:58:08,117 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 11:58:08,122 INFO L137 encePairwiseOnDemand]: 237/253 looper letters, 97 selfloop transitions, 26 changer transitions 0/306 dead transitions. [2022-11-16 11:58:08,123 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 348 places, 306 transitions, 1544 flow [2022-11-16 11:58:08,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-16 11:58:08,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-16 11:58:08,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2678 transitions. [2022-11-16 11:58:08,128 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.70566534914361 [2022-11-16 11:58:08,128 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2678 transitions. [2022-11-16 11:58:08,128 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2678 transitions. [2022-11-16 11:58:08,131 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:58:08,132 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2678 transitions. [2022-11-16 11:58:08,137 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 11:58:08,144 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 11:58:08,145 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 11:58:08,145 INFO L175 Difference]: Start difference. First operand has 334 places, 294 transitions, 1281 flow. Second operand 15 states and 2678 transitions. [2022-11-16 11:58:08,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 348 places, 306 transitions, 1544 flow [2022-11-16 11:58:08,156 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 11:58:08,161 INFO L231 Difference]: Finished difference. Result has 339 places, 294 transitions, 1309 flow [2022-11-16 11:58:08,161 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 11:58:08,162 INFO L288 CegarLoopForPetriNet]: 235 programPoint places, 104 predicate places. [2022-11-16 11:58:08,162 INFO L495 AbstractCegarLoop]: Abstraction has has 339 places, 294 transitions, 1309 flow [2022-11-16 11:58:08,163 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 11:58:08,164 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:58:08,164 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 11:58:08,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-16 11:58:08,164 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 11:58:08,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:58:08,165 INFO L85 PathProgramCache]: Analyzing trace with hash 678632843, now seen corresponding path program 1 times [2022-11-16 11:58:08,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:58:08,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121291114] [2022-11-16 11:58:08,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:58:08,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:58:08,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:58:11,848 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 11:58:11,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:58:11,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121291114] [2022-11-16 11:58:11,848 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121291114] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:58:11,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1681358348] [2022-11-16 11:58:11,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:58:11,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:58:11,849 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e9f22d-1d03-4a5b-8508-6e38cd85fe81/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:58:11,855 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e9f22d-1d03-4a5b-8508-6e38cd85fe81/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:58:11,881 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e9f22d-1d03-4a5b-8508-6e38cd85fe81/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 11:58:12,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:58:12,049 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 71 conjunts are in the unsatisfiable core [2022-11-16 11:58:12,060 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:58:12,349 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-16 11:58:12,350 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 11:58:12,639 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 11:58:12,743 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 11:58:13,273 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 11:58:13,865 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 11:58:13,887 INFO L321 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2022-11-16 11:58:13,887 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 11:58:14,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:58:14,228 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 11:58:14,230 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 11:58:14,875 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 11:58:15,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:58:15,067 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 11:58:15,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:58:15,429 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 11:58:15,449 INFO L321 Elim1Store]: treesize reduction 46, result has 27.0 percent of original size [2022-11-16 11:58:15,449 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 11:58:15,510 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 11:58:15,518 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 11:58:15,519 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:58:16,322 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|) (+ 3204 |c_t1Thread1of1ForFork0_enqueue_~q#1.offset|) 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) (+ 3208 |c_~#queue~0.offset|)) 2147483647) (not (<= |v_t1Thread1of1ForFork0_enqueue_#t~mem36#1_12| (select .cse0 (+ |c_~#queue~0.offset| 3204))))))) is different from false [2022-11-16 11:58:16,915 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 (+ 3204 |c_t1Thread1of1ForFork0_enqueue_~q#1.offset|))) (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) (+ 3208 |c_~#queue~0.offset|)) 2147483647) (not (<= |v_t1Thread1of1ForFork0_enqueue_#t~mem36#1_12| (select .cse0 (+ |c_~#queue~0.offset| 3204)))) (< (+ (select .cse1 .cse2) 1) v_ArrVal_343))))) is different from false [2022-11-16 11:58:17,119 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse2 (select |c_#memory_int| |c_t1Thread1of1ForFork0_enqueue_~q#1.base|)) (.cse3 (+ 3204 |c_t1Thread1of1ForFork0_enqueue_~q#1.offset|))) (let ((.cse1 (select .cse2 .cse3))) (or (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 .cse2 .cse3 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) (+ 3208 |c_~#queue~0.offset|)) 2147483647) (not (<= |v_t1Thread1of1ForFork0_enqueue_#t~mem36#1_12| (select .cse0 (+ |c_~#queue~0.offset| 3204)))) (< (+ .cse1 1) v_ArrVal_343)))) (= 800 .cse1)))) is different from false [2022-11-16 11:58:17,215 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse2 (select |c_#memory_int| |c_t1Thread1of1ForFork0_enqueue_~q#1.base|)) (.cse3 (+ 3204 |c_t1Thread1of1ForFork0_enqueue_~q#1.offset|))) (let ((.cse1 (select .cse2 .cse3))) (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))) (let ((.cse0 (select (store (store |c_#memory_int| |c_t1Thread1of1ForFork0_enqueue_~q#1.base| (store (store .cse2 (+ 3208 |c_t1Thread1of1ForFork0_enqueue_~q#1.offset|) v_ArrVal_341) .cse3 v_ArrVal_343)) |c_~#stored_elements~0.base| v_ArrVal_344) |c_~#queue~0.base|))) (or (not (<= v_ArrVal_341 (+ |c_t1Thread1of1ForFork0_enqueue_#t~post38#1| 1))) (< (select (store .cse0 (+ |c_~#queue~0.offset| (* 4 |v_t1Thread1of1ForFork0_enqueue_#t~mem36#1_12|)) v_ArrVal_345) (+ 3208 |c_~#queue~0.offset|)) 2147483647) (< (+ .cse1 1) v_ArrVal_343) (not (<= |v_t1Thread1of1ForFork0_enqueue_#t~mem36#1_12| (select .cse0 (+ |c_~#queue~0.offset| 3204))))))) (= 800 .cse1)))) is different from false [2022-11-16 11:58:17,744 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_ArrVal_344 (Array Int Int)) (v_ArrVal_338 Int)) (let ((.cse2 (store (select |c_#memory_int| |c_t1Thread1of1ForFork0_enqueue_~q#1.base|) (+ (* |c_t1Thread1of1ForFork0_enqueue_#t~mem36#1| 4) |c_t1Thread1of1ForFork0_enqueue_~q#1.offset|) v_ArrVal_338)) (.cse3 (+ 3208 |c_t1Thread1of1ForFork0_enqueue_~q#1.offset|)) (.cse4 (+ 3204 |c_t1Thread1of1ForFork0_enqueue_~q#1.offset|))) (let ((.cse1 (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|)) (.cse0 (select .cse2 .cse4))) (or (< (+ .cse0 1) v_ArrVal_343) (< (select (store .cse1 (+ |c_~#queue~0.offset| (* 4 |v_t1Thread1of1ForFork0_enqueue_#t~mem36#1_12|)) v_ArrVal_345) (+ 3208 |c_~#queue~0.offset|)) 2147483647) (not (<= |v_t1Thread1of1ForFork0_enqueue_#t~mem36#1_12| (select .cse1 (+ |c_~#queue~0.offset| 3204)))) (< (+ (select .cse2 .cse3) 1) v_ArrVal_341) (= 800 .cse0))))) is different from false [2022-11-16 11:58:19,226 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 ((.cse4 (select |c_#memory_int| |c_t1Thread1of1ForFork0_enqueue_#in~q#1.base|))) (let ((.cse0 (store .cse4 (+ (* 4 |v_t1Thread1of1ForFork0_enqueue_#t~mem36#1_15|) |c_t1Thread1of1ForFork0_enqueue_#in~q#1.offset|) v_ArrVal_338)) (.cse1 (+ 3208 |c_t1Thread1of1ForFork0_enqueue_#in~q#1.offset|)) (.cse5 (+ |c_t1Thread1of1ForFork0_enqueue_#in~q#1.offset| 3204))) (let ((.cse2 (select (store (store |c_#memory_int| |c_t1Thread1of1ForFork0_enqueue_#in~q#1.base| (store (store .cse0 .cse1 v_ArrVal_341) .cse5 v_ArrVal_343)) |c_~#stored_elements~0.base| v_ArrVal_344) |c_~#queue~0.base|)) (.cse3 (select .cse0 .cse5))) (or (< (+ 1 (select .cse0 .cse1)) v_ArrVal_341) (< (select (store .cse2 (+ |c_~#queue~0.offset| (* 4 |v_t1Thread1of1ForFork0_enqueue_#t~mem36#1_12|)) v_ArrVal_345) (+ 3208 |c_~#queue~0.offset|)) 2147483647) (= 800 .cse3) (not (<= |v_t1Thread1of1ForFork0_enqueue_#t~mem36#1_12| (select .cse2 (+ |c_~#queue~0.offset| 3204)))) (not (<= |v_t1Thread1of1ForFork0_enqueue_#t~mem36#1_15| (select .cse4 .cse5))) (< (+ .cse3 1) v_ArrVal_343)))))) is different from false [2022-11-16 11:58:28,091 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)) (let ((.cse6 (store |c_#memory_int| |c_ULTIMATE.start_main_~#id1~0#1.base| v_ArrVal_337))) (let ((.cse4 (select .cse6 |c_~#queue~0.base|))) (let ((.cse3 (store .cse4 (+ (* 4 |v_t1Thread1of1ForFork0_enqueue_#t~mem36#1_15|) |c_~#queue~0.offset|) v_ArrVal_338)) (.cse2 (+ 3208 |c_~#queue~0.offset|)) (.cse1 (+ |c_~#queue~0.offset| 3204))) (let ((.cse0 (select (store (store .cse6 |c_~#queue~0.base| (store (store .cse3 .cse2 v_ArrVal_341) .cse1 v_ArrVal_343)) |c_~#stored_elements~0.base| v_ArrVal_344) |c_~#queue~0.base|)) (.cse5 (select .cse3 .cse1))) (or (not (<= |v_t1Thread1of1ForFork0_enqueue_#t~mem36#1_12| (select .cse0 .cse1))) (< (select (store .cse0 (+ |c_~#queue~0.offset| (* 4 |v_t1Thread1of1ForFork0_enqueue_#t~mem36#1_12|)) v_ArrVal_345) .cse2) 2147483647) (< (+ (select .cse3 .cse2) 1) v_ArrVal_341) (not (<= |v_t1Thread1of1ForFork0_enqueue_#t~mem36#1_15| (select .cse4 .cse1))) (= 800 .cse5) (< (+ .cse5 1) v_ArrVal_343))))))) is different from false [2022-11-16 11:58:29,193 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|) (+ 3208 |c_ULTIMATE.start_init_~q#1.offset|) v_ArrVal_336)) |c_ULTIMATE.start_main_~#id1~0#1.base| v_ArrVal_337))) (let ((.cse3 (select .cse6 |c_~#queue~0.base|))) (let ((.cse1 (+ 3208 |c_~#queue~0.offset|)) (.cse0 (store .cse3 (+ (* 4 |v_t1Thread1of1ForFork0_enqueue_#t~mem36#1_15|) |c_~#queue~0.offset|) v_ArrVal_338)) (.cse4 (+ |c_~#queue~0.offset| 3204))) (let ((.cse2 (select .cse0 .cse4)) (.cse5 (select (store (store .cse6 |c_~#queue~0.base| (store (store .cse0 .cse1 v_ArrVal_341) .cse4 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_ArrVal_336 0)) (= 800 .cse2) (< (+ .cse2 1) v_ArrVal_343) (not (<= |v_t1Thread1of1ForFork0_enqueue_#t~mem36#1_15| (select .cse3 .cse4))) (< (select (store .cse5 (+ |c_~#queue~0.offset| (* 4 |v_t1Thread1of1ForFork0_enqueue_#t~mem36#1_12|)) v_ArrVal_345) .cse1) 2147483647) (not (<= |v_t1Thread1of1ForFork0_enqueue_#t~mem36#1_12| (select .cse5 .cse4))))))))) is different from false [2022-11-16 11:58:29,240 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:58:29,241 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 11:58:29,267 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:58:29,268 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 11:58:29,293 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 11:58:29,314 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 11:58:29,388 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 11:58:29,705 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:58:29,707 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 221 treesize of output 233 [2022-11-16 11:58:33,003 INFO L321 Elim1Store]: treesize reduction 5, result has 80.0 percent of original size [2022-11-16 11:58:33,003 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 11:58:33,070 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 11:58:33,070 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1681358348] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:58:33,070 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:58:33,070 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 27, 29] total 80 [2022-11-16 11:58:33,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836465634] [2022-11-16 11:58:33,071 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:58:33,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 81 states [2022-11-16 11:58:33,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:58:33,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2022-11-16 11:58:33,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=616, Invalid=4628, Unknown=44, NotChecked=1192, Total=6480 [2022-11-16 11:58:33,087 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 253 [2022-11-16 11:58:33,100 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 11:58:33,100 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:58:33,100 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 253 [2022-11-16 11:58:33,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:59:19,949 INFO L130 PetriNetUnfolder]: 809/4070 cut-off events. [2022-11-16 11:59:19,949 INFO L131 PetriNetUnfolder]: For 2461/2465 co-relation queries the response was YES. [2022-11-16 11:59:19,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8227 conditions, 4070 events. 809/4070 cut-off events. For 2461/2465 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 30325 event pairs, 359 based on Foata normal form. 10/3862 useless extension candidates. Maximal degree in co-relation 8070. Up to 755 conditions per place. [2022-11-16 11:59:20,000 INFO L137 encePairwiseOnDemand]: 215/253 looper letters, 212 selfloop transitions, 120 changer transitions 0/483 dead transitions. [2022-11-16 11:59:20,001 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 397 places, 483 transitions, 2950 flow [2022-11-16 11:59:20,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-11-16 11:59:20,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2022-11-16 11:59:20,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 9614 transitions. [2022-11-16 11:59:20,018 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6440677966101694 [2022-11-16 11:59:20,018 INFO L72 ComplementDD]: Start complementDD. Operand 59 states and 9614 transitions. [2022-11-16 11:59:20,018 INFO L73 IsDeterministic]: Start isDeterministic. Operand 59 states and 9614 transitions. [2022-11-16 11:59:20,024 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:59:20,024 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 59 states and 9614 transitions. [2022-11-16 11:59:20,045 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 60 states, 59 states have (on average 162.94915254237287) internal successors, (9614), 59 states have internal predecessors, (9614), 0 states have call successors, (0), 0 states 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 11:59:20,066 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 60 states, 60 states have (on average 253.0) internal successors, (15180), 60 states have internal predecessors, (15180), 0 states have call successors, (0), 0 states 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 11:59:20,070 INFO L81 ComplementDD]: Finished complementDD. Result has 60 states, 60 states have (on average 253.0) internal successors, (15180), 60 states have internal predecessors, (15180), 0 states have call successors, (0), 0 states 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 11:59:20,070 INFO L175 Difference]: Start difference. First operand has 339 places, 294 transitions, 1309 flow. Second operand 59 states and 9614 transitions. [2022-11-16 11:59:20,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 397 places, 483 transitions, 2950 flow [2022-11-16 11:59:20,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 384 places, 483 transitions, 2893 flow, removed 12 selfloop flow, removed 13 redundant places. [2022-11-16 11:59:20,100 INFO L231 Difference]: Finished difference. Result has 406 places, 380 transitions, 2320 flow [2022-11-16 11:59:20,102 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=1270, PETRI_DIFFERENCE_MINUEND_PLACES=326, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=59, PETRI_FLOW=2320, PETRI_PLACES=406, PETRI_TRANSITIONS=380} [2022-11-16 11:59:20,103 INFO L288 CegarLoopForPetriNet]: 235 programPoint places, 171 predicate places. [2022-11-16 11:59:20,103 INFO L495 AbstractCegarLoop]: Abstraction has has 406 places, 380 transitions, 2320 flow [2022-11-16 11:59:20,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has 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 11:59:20,107 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:59:20,107 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 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 11:59:20,115 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e9f22d-1d03-4a5b-8508-6e38cd85fe81/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-16 11:59:20,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e9f22d-1d03-4a5b-8508-6e38cd85fe81/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-16 11:59:20,313 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2022-11-16 11:59:20,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:59:20,313 INFO L85 PathProgramCache]: Analyzing trace with hash -437217722, now seen corresponding path program 1 times [2022-11-16 11:59:20,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:59:20,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40952467] [2022-11-16 11:59:20,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:59:20,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:59:20,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat