./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread/queue_longest.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 6b4ec56b 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_fb3464a7-cb8f-4f7f-9c8b-b1247d24636d/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3464a7-cb8f-4f7f-9c8b-b1247d24636d/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3464a7-cb8f-4f7f-9c8b-b1247d24636d/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3464a7-cb8f-4f7f-9c8b-b1247d24636d/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/queue_longest.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3464a7-cb8f-4f7f-9c8b-b1247d24636d/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3464a7-cb8f-4f7f-9c8b-b1247d24636d/bin/uautomizer-ug76WZFUDN --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 5fb3c623242420f3b3352ce2377df781fcc1efd56f82dd0011f9620e127821b3 --- 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-6b4ec56 [2022-11-20 10:30:02,673 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 10:30:02,676 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 10:30:02,707 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 10:30:02,720 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 10:30:02,724 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 10:30:02,726 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 10:30:02,729 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 10:30:02,732 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 10:30:02,738 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 10:30:02,739 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 10:30:02,742 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 10:30:02,743 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 10:30:02,748 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 10:30:02,749 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 10:30:02,751 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 10:30:02,753 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 10:30:02,754 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 10:30:02,755 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 10:30:02,762 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 10:30:02,763 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 10:30:02,766 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 10:30:02,767 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 10:30:02,768 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 10:30:02,778 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 10:30:02,778 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 10:30:02,779 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 10:30:02,780 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 10:30:02,781 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 10:30:02,782 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 10:30:02,782 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 10:30:02,783 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 10:30:02,785 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 10:30:02,786 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 10:30:02,787 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 10:30:02,788 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 10:30:02,788 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 10:30:02,789 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 10:30:02,789 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 10:30:02,790 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 10:30:02,790 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 10:30:02,791 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3464a7-cb8f-4f7f-9c8b-b1247d24636d/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-20 10:30:02,829 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 10:30:02,829 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 10:30:02,830 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 10:30:02,830 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 10:30:02,831 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 10:30:02,832 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 10:30:02,832 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 10:30:02,833 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 10:30:02,833 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 10:30:02,833 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 10:30:02,834 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 10:30:02,835 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 10:30:02,835 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 10:30:02,835 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 10:30:02,835 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 10:30:02,836 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 10:30:02,836 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 10:30:02,836 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 10:30:02,836 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-20 10:30:02,836 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 10:30:02,837 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 10:30:02,837 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 10:30:02,837 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 10:30:02,837 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 10:30:02,838 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 10:30:02,838 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 10:30:02,838 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:30:02,838 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 10:30:02,838 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 10:30:02,839 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 10:30:02,839 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 10:30:02,839 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 10:30:02,839 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 10:30:02,840 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 10:30:02,840 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 10:30:02,840 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_fb3464a7-cb8f-4f7f-9c8b-b1247d24636d/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3464a7-cb8f-4f7f-9c8b-b1247d24636d/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5fb3c623242420f3b3352ce2377df781fcc1efd56f82dd0011f9620e127821b3 [2022-11-20 10:30:03,157 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 10:30:03,182 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 10:30:03,185 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 10:30:03,186 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 10:30:03,187 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 10:30:03,188 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3464a7-cb8f-4f7f-9c8b-b1247d24636d/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/pthread/queue_longest.i [2022-11-20 10:30:06,133 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 10:30:06,466 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 10:30:06,467 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3464a7-cb8f-4f7f-9c8b-b1247d24636d/sv-benchmarks/c/pthread/queue_longest.i [2022-11-20 10:30:06,481 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3464a7-cb8f-4f7f-9c8b-b1247d24636d/bin/uautomizer-ug76WZFUDN/data/372c4bbac/bd8f1182ad4b4bbf8d0cb0f3114d96f5/FLAGcf2ade73e [2022-11-20 10:30:06,499 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3464a7-cb8f-4f7f-9c8b-b1247d24636d/bin/uautomizer-ug76WZFUDN/data/372c4bbac/bd8f1182ad4b4bbf8d0cb0f3114d96f5 [2022-11-20 10:30:06,501 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 10:30:06,503 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 10:30:06,505 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 10:30:06,505 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 10:30:06,509 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 10:30:06,510 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:30:06" (1/1) ... [2022-11-20 10:30:06,511 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2388136a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:30:06, skipping insertion in model container [2022-11-20 10:30:06,511 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:30:06" (1/1) ... [2022-11-20 10:30:06,520 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 10:30:06,579 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 10:30:07,126 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3464a7-cb8f-4f7f-9c8b-b1247d24636d/sv-benchmarks/c/pthread/queue_longest.i[43296,43309] [2022-11-20 10:30:07,130 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3464a7-cb8f-4f7f-9c8b-b1247d24636d/sv-benchmarks/c/pthread/queue_longest.i[43503,43516] [2022-11-20 10:30:07,133 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3464a7-cb8f-4f7f-9c8b-b1247d24636d/sv-benchmarks/c/pthread/queue_longest.i[43783,43796] [2022-11-20 10:30:07,138 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:30:07,151 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 10:30:07,197 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3464a7-cb8f-4f7f-9c8b-b1247d24636d/sv-benchmarks/c/pthread/queue_longest.i[43296,43309] [2022-11-20 10:30:07,199 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3464a7-cb8f-4f7f-9c8b-b1247d24636d/sv-benchmarks/c/pthread/queue_longest.i[43503,43516] [2022-11-20 10:30:07,202 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3464a7-cb8f-4f7f-9c8b-b1247d24636d/sv-benchmarks/c/pthread/queue_longest.i[43783,43796] [2022-11-20 10:30:07,205 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:30:07,273 INFO L208 MainTranslator]: Completed translation [2022-11-20 10:30:07,274 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:30:07 WrapperNode [2022-11-20 10:30:07,274 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 10:30:07,275 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 10:30:07,275 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 10:30:07,276 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 10:30:07,283 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:30:07" (1/1) ... [2022-11-20 10:30:07,312 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:30:07" (1/1) ... [2022-11-20 10:30:07,370 INFO L138 Inliner]: procedures = 274, calls = 60, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 259 [2022-11-20 10:30:07,373 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 10:30:07,374 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 10:30:07,375 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 10:30:07,375 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 10:30:07,386 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:30:07" (1/1) ... [2022-11-20 10:30:07,386 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:30:07" (1/1) ... [2022-11-20 10:30:07,399 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:30:07" (1/1) ... [2022-11-20 10:30:07,399 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:30:07" (1/1) ... [2022-11-20 10:30:07,418 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:30:07" (1/1) ... [2022-11-20 10:30:07,422 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:30:07" (1/1) ... [2022-11-20 10:30:07,432 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:30:07" (1/1) ... [2022-11-20 10:30:07,435 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:30:07" (1/1) ... [2022-11-20 10:30:07,438 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 10:30:07,444 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 10:30:07,445 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 10:30:07,445 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 10:30:07,446 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:30:07" (1/1) ... [2022-11-20 10:30:07,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:30:07,467 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3464a7-cb8f-4f7f-9c8b-b1247d24636d/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:30:07,489 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3464a7-cb8f-4f7f-9c8b-b1247d24636d/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 10:30:07,516 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3464a7-cb8f-4f7f-9c8b-b1247d24636d/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 10:30:07,538 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2022-11-20 10:30:07,539 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2022-11-20 10:30:07,539 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2022-11-20 10:30:07,539 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2022-11-20 10:30:07,539 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 10:30:07,540 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 10:30:07,540 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 10:30:07,540 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 10:30:07,540 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-20 10:30:07,540 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 10:30:07,541 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 10:30:07,541 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 10:30:07,541 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 10:30:07,543 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-20 10:30:07,722 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 10:30:07,725 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 10:30:08,225 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 10:30:08,237 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 10:30:08,237 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-20 10:30:08,240 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:30:08 BoogieIcfgContainer [2022-11-20 10:30:08,240 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 10:30:08,242 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 10:30:08,243 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 10:30:08,246 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 10:30:08,247 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 10:30:06" (1/3) ... [2022-11-20 10:30:08,248 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@299f2735 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:30:08, skipping insertion in model container [2022-11-20 10:30:08,248 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:30:07" (2/3) ... [2022-11-20 10:30:08,248 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@299f2735 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:30:08, skipping insertion in model container [2022-11-20 10:30:08,249 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:30:08" (3/3) ... [2022-11-20 10:30:08,250 INFO L112 eAbstractionObserver]: Analyzing ICFG queue_longest.i [2022-11-20 10:30:08,260 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-20 10:30:08,272 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 10:30:08,273 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2022-11-20 10:30:08,273 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 10:30:08,485 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-20 10:30:08,550 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 297 places, 305 transitions, 626 flow [2022-11-20 10:30:08,773 INFO L130 PetriNetUnfolder]: 15/303 cut-off events. [2022-11-20 10:30:08,774 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-20 10:30:08,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 312 conditions, 303 events. 15/303 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 469 event pairs, 0 based on Foata normal form. 0/270 useless extension candidates. Maximal degree in co-relation 223. Up to 2 conditions per place. [2022-11-20 10:30:08,787 INFO L82 GeneralOperation]: Start removeDead. Operand has 297 places, 305 transitions, 626 flow [2022-11-20 10:30:08,805 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 285 places, 293 transitions, 595 flow [2022-11-20 10:30:08,820 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 10:30:08,826 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;@689ed1e9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 10:30:08,826 INFO L358 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2022-11-20 10:30:08,850 INFO L130 PetriNetUnfolder]: 3/110 cut-off events. [2022-11-20 10:30:08,851 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 10:30:08,851 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:30:08,852 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] [2022-11-20 10:30:08,853 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-20 10:30:08,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:30:08,861 INFO L85 PathProgramCache]: Analyzing trace with hash 2062797442, now seen corresponding path program 1 times [2022-11-20 10:30:08,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:30:08,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536855659] [2022-11-20 10:30:08,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:30:08,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:30:09,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:10,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:30:10,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:30:10,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536855659] [2022-11-20 10:30:10,186 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536855659] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:30:10,186 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:30:10,188 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-20 10:30:10,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566447317] [2022-11-20 10:30:10,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:30:10,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 10:30:10,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:30:10,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 10:30:10,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-11-20 10:30:10,288 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 305 [2022-11-20 10:30:10,298 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 293 transitions, 595 flow. Second operand has 12 states, 12 states have (on average 230.33333333333334) internal successors, (2764), 12 states have internal predecessors, (2764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:30:10,298 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:30:10,298 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 305 [2022-11-20 10:30:10,299 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:30:11,879 INFO L130 PetriNetUnfolder]: 1003/4825 cut-off events. [2022-11-20 10:30:11,879 INFO L131 PetriNetUnfolder]: For 54/54 co-relation queries the response was YES. [2022-11-20 10:30:11,897 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6349 conditions, 4825 events. 1003/4825 cut-off events. For 54/54 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 42086 event pairs, 789 based on Foata normal form. 203/4356 useless extension candidates. Maximal degree in co-relation 6146. Up to 1435 conditions per place. [2022-11-20 10:30:11,923 INFO L137 encePairwiseOnDemand]: 287/305 looper letters, 52 selfloop transitions, 12 changer transitions 0/279 dead transitions. [2022-11-20 10:30:11,923 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 279 transitions, 695 flow [2022-11-20 10:30:11,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-20 10:30:11,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-20 10:30:11,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 3034 transitions. [2022-11-20 10:30:11,995 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7651954602774275 [2022-11-20 10:30:12,000 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 3034 transitions. [2022-11-20 10:30:12,001 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 3034 transitions. [2022-11-20 10:30:12,007 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:30:12,009 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 3034 transitions. [2022-11-20 10:30:12,022 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 233.3846153846154) internal successors, (3034), 13 states have internal predecessors, (3034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:30:12,041 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 305.0) internal successors, (4270), 14 states have internal predecessors, (4270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:30:12,044 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 305.0) internal successors, (4270), 14 states have internal predecessors, (4270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:30:12,046 INFO L175 Difference]: Start difference. First operand has 285 places, 293 transitions, 595 flow. Second operand 13 states and 3034 transitions. [2022-11-20 10:30:12,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 279 transitions, 695 flow [2022-11-20 10:30:12,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 279 transitions, 690 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 10:30:12,063 INFO L231 Difference]: Finished difference. Result has 286 places, 279 transitions, 586 flow [2022-11-20 10:30:12,065 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=562, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=267, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=586, PETRI_PLACES=286, PETRI_TRANSITIONS=279} [2022-11-20 10:30:12,070 INFO L288 CegarLoopForPetriNet]: 285 programPoint places, 1 predicate places. [2022-11-20 10:30:12,071 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 279 transitions, 586 flow [2022-11-20 10:30:12,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 230.33333333333334) internal successors, (2764), 12 states have internal predecessors, (2764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:30:12,073 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:30:12,073 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] [2022-11-20 10:30:12,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 10:30:12,074 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-20 10:30:12,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:30:12,075 INFO L85 PathProgramCache]: Analyzing trace with hash 1991466801, now seen corresponding path program 1 times [2022-11-20 10:30:12,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:30:12,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175983191] [2022-11-20 10:30:12,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:30:12,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:30:12,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:12,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:30:12,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:30:12,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175983191] [2022-11-20 10:30:12,227 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175983191] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:30:12,229 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:30:12,229 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:30:12,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792560881] [2022-11-20 10:30:12,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:30:12,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:30:12,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:30:12,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:30:12,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:30:12,241 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 280 out of 305 [2022-11-20 10:30:12,243 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 279 transitions, 586 flow. Second operand has 4 states, 4 states have (on average 281.75) internal successors, (1127), 4 states have internal predecessors, (1127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:30:12,244 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:30:12,244 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 280 of 305 [2022-11-20 10:30:12,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:30:12,409 INFO L130 PetriNetUnfolder]: 34/483 cut-off events. [2022-11-20 10:30:12,409 INFO L131 PetriNetUnfolder]: For 19/20 co-relation queries the response was YES. [2022-11-20 10:30:12,412 INFO L83 FinitePrefix]: Finished finitePrefix Result has 560 conditions, 483 events. 34/483 cut-off events. For 19/20 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1764 event pairs, 3 based on Foata normal form. 0/415 useless extension candidates. Maximal degree in co-relation 485. Up to 39 conditions per place. [2022-11-20 10:30:12,415 INFO L137 encePairwiseOnDemand]: 298/305 looper letters, 21 selfloop transitions, 4 changer transitions 0/289 dead transitions. [2022-11-20 10:30:12,416 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 289 transitions, 659 flow [2022-11-20 10:30:12,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 10:30:12,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 10:30:12,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1428 transitions. [2022-11-20 10:30:12,420 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9363934426229508 [2022-11-20 10:30:12,420 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1428 transitions. [2022-11-20 10:30:12,420 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1428 transitions. [2022-11-20 10:30:12,421 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:30:12,421 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1428 transitions. [2022-11-20 10:30:12,425 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 285.6) internal successors, (1428), 5 states have internal predecessors, (1428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:30:12,428 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 305.0) internal successors, (1830), 6 states have internal predecessors, (1830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:30:12,429 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 305.0) internal successors, (1830), 6 states have internal predecessors, (1830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:30:12,430 INFO L175 Difference]: Start difference. First operand has 286 places, 279 transitions, 586 flow. Second operand 5 states and 1428 transitions. [2022-11-20 10:30:12,430 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 289 transitions, 659 flow [2022-11-20 10:30:12,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 289 transitions, 636 flow, removed 0 selfloop flow, removed 11 redundant places. [2022-11-20 10:30:12,440 INFO L231 Difference]: Finished difference. Result has 282 places, 282 transitions, 595 flow [2022-11-20 10:30:12,441 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=563, PETRI_DIFFERENCE_MINUEND_PLACES=275, 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=5, PETRI_FLOW=595, PETRI_PLACES=282, PETRI_TRANSITIONS=282} [2022-11-20 10:30:12,442 INFO L288 CegarLoopForPetriNet]: 285 programPoint places, -3 predicate places. [2022-11-20 10:30:12,442 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 282 transitions, 595 flow [2022-11-20 10:30:12,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 281.75) internal successors, (1127), 4 states have internal predecessors, (1127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:30:12,443 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:30:12,444 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] [2022-11-20 10:30:12,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 10:30:12,444 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-20 10:30:12,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:30:12,446 INFO L85 PathProgramCache]: Analyzing trace with hash 1277169439, now seen corresponding path program 1 times [2022-11-20 10:30:12,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:30:12,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084459616] [2022-11-20 10:30:12,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:30:12,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:30:12,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:23,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:30:23,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:30:23,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084459616] [2022-11-20 10:30:23,326 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084459616] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:30:23,326 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:30:23,326 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-20 10:30:23,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856470921] [2022-11-20 10:30:23,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:30:23,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-20 10:30:23,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:30:23,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-20 10:30:23,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=268, Unknown=0, NotChecked=0, Total=342 [2022-11-20 10:30:23,334 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 305 [2022-11-20 10:30:23,340 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 282 transitions, 595 flow. Second operand has 19 states, 19 states have (on average 211.78947368421052) internal successors, (4024), 19 states have internal predecessors, (4024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:30:23,340 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:30:23,340 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 305 [2022-11-20 10:30:23,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:30:32,020 INFO L130 PetriNetUnfolder]: 3593/11407 cut-off events. [2022-11-20 10:30:32,021 INFO L131 PetriNetUnfolder]: For 72/72 co-relation queries the response was YES. [2022-11-20 10:30:32,064 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17278 conditions, 11407 events. 3593/11407 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 215. Compared 112241 event pairs, 2883 based on Foata normal form. 0/10030 useless extension candidates. Maximal degree in co-relation 17187. Up to 4855 conditions per place. [2022-11-20 10:30:32,109 INFO L137 encePairwiseOnDemand]: 284/305 looper letters, 119 selfloop transitions, 27 changer transitions 0/345 dead transitions. [2022-11-20 10:30:32,109 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 345 transitions, 1019 flow [2022-11-20 10:30:32,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-20 10:30:32,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-11-20 10:30:32,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 4350 transitions. [2022-11-20 10:30:32,120 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7131147540983607 [2022-11-20 10:30:32,121 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 4350 transitions. [2022-11-20 10:30:32,121 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 4350 transitions. [2022-11-20 10:30:32,123 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:30:32,124 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 4350 transitions. [2022-11-20 10:30:32,133 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 217.5) internal successors, (4350), 20 states have internal predecessors, (4350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:30:32,144 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 305.0) internal successors, (6405), 21 states have internal predecessors, (6405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:30:32,147 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 305.0) internal successors, (6405), 21 states have internal predecessors, (6405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:30:32,148 INFO L175 Difference]: Start difference. First operand has 282 places, 282 transitions, 595 flow. Second operand 20 states and 4350 transitions. [2022-11-20 10:30:32,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 345 transitions, 1019 flow [2022-11-20 10:30:32,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 345 transitions, 1017 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 10:30:32,158 INFO L231 Difference]: Finished difference. Result has 309 places, 303 transitions, 750 flow [2022-11-20 10:30:32,159 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=593, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=750, PETRI_PLACES=309, PETRI_TRANSITIONS=303} [2022-11-20 10:30:32,159 INFO L288 CegarLoopForPetriNet]: 285 programPoint places, 24 predicate places. [2022-11-20 10:30:32,160 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 303 transitions, 750 flow [2022-11-20 10:30:32,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 211.78947368421052) internal successors, (4024), 19 states have internal predecessors, (4024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:30:32,162 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:30:32,162 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] [2022-11-20 10:30:32,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 10:30:32,163 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-20 10:30:32,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:30:32,163 INFO L85 PathProgramCache]: Analyzing trace with hash 1336554938, now seen corresponding path program 1 times [2022-11-20 10:30:32,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:30:32,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572622284] [2022-11-20 10:30:32,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:30:32,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:30:32,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:34,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:30:34,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:30:34,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572622284] [2022-11-20 10:30:34,306 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572622284] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:30:34,307 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:30:34,307 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-20 10:30:34,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661057149] [2022-11-20 10:30:34,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:30:34,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-20 10:30:34,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:30:34,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-20 10:30:34,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=311, Unknown=0, NotChecked=0, Total=380 [2022-11-20 10:30:34,312 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 305 [2022-11-20 10:30:34,317 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 303 transitions, 750 flow. Second operand has 20 states, 20 states have (on average 203.1) internal successors, (4062), 20 states have internal predecessors, (4062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:30:34,317 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:30:34,317 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 305 [2022-11-20 10:30:34,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:30:38,816 INFO L130 PetriNetUnfolder]: 4210/14679 cut-off events. [2022-11-20 10:30:38,816 INFO L131 PetriNetUnfolder]: For 1230/1234 co-relation queries the response was YES. [2022-11-20 10:30:38,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23085 conditions, 14679 events. 4210/14679 cut-off events. For 1230/1234 co-relation queries the response was YES. Maximal size of possible extension queue 278. Compared 153684 event pairs, 964 based on Foata normal form. 102/13199 useless extension candidates. Maximal degree in co-relation 22970. Up to 4446 conditions per place. [2022-11-20 10:30:38,920 INFO L137 encePairwiseOnDemand]: 283/305 looper letters, 190 selfloop transitions, 44 changer transitions 0/426 dead transitions. [2022-11-20 10:30:38,921 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 426 transitions, 1522 flow [2022-11-20 10:30:38,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-20 10:30:38,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-11-20 10:30:38,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 4644 transitions. [2022-11-20 10:30:38,938 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6921013412816691 [2022-11-20 10:30:38,938 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 4644 transitions. [2022-11-20 10:30:38,938 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 4644 transitions. [2022-11-20 10:30:38,941 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:30:38,941 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 4644 transitions. [2022-11-20 10:30:38,952 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 211.0909090909091) internal successors, (4644), 22 states have internal predecessors, (4644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:30:38,964 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 305.0) internal successors, (7015), 23 states have internal predecessors, (7015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:30:38,977 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 305.0) internal successors, (7015), 23 states have internal predecessors, (7015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:30:38,985 INFO L175 Difference]: Start difference. First operand has 309 places, 303 transitions, 750 flow. Second operand 22 states and 4644 transitions. [2022-11-20 10:30:38,985 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 426 transitions, 1522 flow [2022-11-20 10:30:39,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 426 transitions, 1509 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-11-20 10:30:39,012 INFO L231 Difference]: Finished difference. Result has 330 places, 332 transitions, 995 flow [2022-11-20 10:30:39,013 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=737, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=273, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=995, PETRI_PLACES=330, PETRI_TRANSITIONS=332} [2022-11-20 10:30:39,015 INFO L288 CegarLoopForPetriNet]: 285 programPoint places, 45 predicate places. [2022-11-20 10:30:39,015 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 332 transitions, 995 flow [2022-11-20 10:30:39,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 203.1) internal successors, (4062), 20 states have internal predecessors, (4062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:30:39,017 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:30:39,018 INFO L209 CegarLoopForPetriNet]: trace histogram [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] [2022-11-20 10:30:39,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 10:30:39,018 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-20 10:30:39,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:30:39,019 INFO L85 PathProgramCache]: Analyzing trace with hash 449135622, now seen corresponding path program 1 times [2022-11-20 10:30:39,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:30:39,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64867454] [2022-11-20 10:30:39,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:30:39,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:30:39,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:39,090 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 10:30:39,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:30:39,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64867454] [2022-11-20 10:30:39,091 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64867454] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:30:39,091 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:30:39,091 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:30:39,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608535741] [2022-11-20 10:30:39,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:30:39,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:30:39,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:30:39,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:30:39,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:30:39,094 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 280 out of 305 [2022-11-20 10:30:39,096 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 332 transitions, 995 flow. Second operand has 4 states, 4 states have (on average 283.25) internal successors, (1133), 4 states have internal predecessors, (1133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:30:39,096 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:30:39,096 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 280 of 305 [2022-11-20 10:30:39,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:30:39,587 INFO L130 PetriNetUnfolder]: 168/2271 cut-off events. [2022-11-20 10:30:39,587 INFO L131 PetriNetUnfolder]: For 258/259 co-relation queries the response was YES. [2022-11-20 10:30:39,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3089 conditions, 2271 events. 168/2271 cut-off events. For 258/259 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 19823 event pairs, 18 based on Foata normal form. 19/2042 useless extension candidates. Maximal degree in co-relation 2996. Up to 147 conditions per place. [2022-11-20 10:30:39,606 INFO L137 encePairwiseOnDemand]: 299/305 looper letters, 13 selfloop transitions, 8 changer transitions 0/335 dead transitions. [2022-11-20 10:30:39,606 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 335 transitions, 1044 flow [2022-11-20 10:30:39,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 10:30:39,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 10:30:39,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1419 transitions. [2022-11-20 10:30:39,610 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9304918032786885 [2022-11-20 10:30:39,610 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1419 transitions. [2022-11-20 10:30:39,610 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1419 transitions. [2022-11-20 10:30:39,611 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:30:39,612 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1419 transitions. [2022-11-20 10:30:39,615 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 283.8) internal successors, (1419), 5 states have internal predecessors, (1419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:30:39,618 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 305.0) internal successors, (1830), 6 states have internal predecessors, (1830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:30:39,618 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 305.0) internal successors, (1830), 6 states have internal predecessors, (1830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:30:39,619 INFO L175 Difference]: Start difference. First operand has 330 places, 332 transitions, 995 flow. Second operand 5 states and 1419 transitions. [2022-11-20 10:30:39,619 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 335 transitions, 1044 flow [2022-11-20 10:30:39,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 335 transitions, 1011 flow, removed 9 selfloop flow, removed 8 redundant places. [2022-11-20 10:30:39,630 INFO L231 Difference]: Finished difference. Result has 326 places, 332 transitions, 982 flow [2022-11-20 10:30:39,631 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=958, PETRI_DIFFERENCE_MINUEND_PLACES=321, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=331, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=323, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=982, PETRI_PLACES=326, PETRI_TRANSITIONS=332} [2022-11-20 10:30:39,633 INFO L288 CegarLoopForPetriNet]: 285 programPoint places, 41 predicate places. [2022-11-20 10:30:39,634 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 332 transitions, 982 flow [2022-11-20 10:30:39,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 283.25) internal successors, (1133), 4 states have internal predecessors, (1133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:30:39,634 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:30:39,635 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:30:39,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 10:30:39,635 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-20 10:30:39,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:30:39,636 INFO L85 PathProgramCache]: Analyzing trace with hash 1038303261, now seen corresponding path program 1 times [2022-11-20 10:30:39,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:30:39,637 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947706954] [2022-11-20 10:30:39,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:30:39,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:30:39,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:39,736 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:30:39,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:30:39,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947706954] [2022-11-20 10:30:39,737 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947706954] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:30:39,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1647410972] [2022-11-20 10:30:39,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:30:39,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:30:39,738 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3464a7-cb8f-4f7f-9c8b-b1247d24636d/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:30:39,744 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3464a7-cb8f-4f7f-9c8b-b1247d24636d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:30:39,768 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3464a7-cb8f-4f7f-9c8b-b1247d24636d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 10:30:39,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:39,884 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 10:30:39,894 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:30:39,996 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:30:39,996 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:30:39,997 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1647410972] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:30:39,997 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:30:39,997 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-20 10:30:39,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527795536] [2022-11-20 10:30:39,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:30:39,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 10:30:39,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:30:39,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:30:39,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-20 10:30:40,000 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 280 out of 305 [2022-11-20 10:30:40,002 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 332 transitions, 982 flow. Second operand has 6 states, 6 states have (on average 282.3333333333333) internal successors, (1694), 6 states have internal predecessors, (1694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:30:40,002 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:30:40,002 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 280 of 305 [2022-11-20 10:30:40,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:30:40,497 INFO L130 PetriNetUnfolder]: 166/2252 cut-off events. [2022-11-20 10:30:40,498 INFO L131 PetriNetUnfolder]: For 402/403 co-relation queries the response was YES. [2022-11-20 10:30:40,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3165 conditions, 2252 events. 166/2252 cut-off events. For 402/403 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 19518 event pairs, 3 based on Foata normal form. 19/2026 useless extension candidates. Maximal degree in co-relation 3079. Up to 99 conditions per place. [2022-11-20 10:30:40,514 INFO L137 encePairwiseOnDemand]: 300/305 looper letters, 19 selfloop transitions, 6 changer transitions 0/339 dead transitions. [2022-11-20 10:30:40,514 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 339 transitions, 1049 flow [2022-11-20 10:30:40,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 10:30:40,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 10:30:40,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1986 transitions. [2022-11-20 10:30:40,519 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9302107728337237 [2022-11-20 10:30:40,520 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1986 transitions. [2022-11-20 10:30:40,520 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1986 transitions. [2022-11-20 10:30:40,521 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:30:40,521 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1986 transitions. [2022-11-20 10:30:40,525 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 283.7142857142857) internal successors, (1986), 7 states have internal predecessors, (1986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:30:40,529 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 305.0) internal successors, (2440), 8 states have internal predecessors, (2440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:30:40,530 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 305.0) internal successors, (2440), 8 states have internal predecessors, (2440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:30:40,530 INFO L175 Difference]: Start difference. First operand has 326 places, 332 transitions, 982 flow. Second operand 7 states and 1986 transitions. [2022-11-20 10:30:40,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 339 transitions, 1049 flow [2022-11-20 10:30:40,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 339 transitions, 1037 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 10:30:40,540 INFO L231 Difference]: Finished difference. Result has 328 places, 331 transitions, 978 flow [2022-11-20 10:30:40,541 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=966, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=331, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=325, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=978, PETRI_PLACES=328, PETRI_TRANSITIONS=331} [2022-11-20 10:30:40,542 INFO L288 CegarLoopForPetriNet]: 285 programPoint places, 43 predicate places. [2022-11-20 10:30:40,542 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 331 transitions, 978 flow [2022-11-20 10:30:40,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 282.3333333333333) internal successors, (1694), 6 states have internal predecessors, (1694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:30:40,543 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:30:40,543 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] [2022-11-20 10:30:40,554 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3464a7-cb8f-4f7f-9c8b-b1247d24636d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 10:30:40,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3464a7-cb8f-4f7f-9c8b-b1247d24636d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:30:40,749 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-20 10:30:40,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:30:40,749 INFO L85 PathProgramCache]: Analyzing trace with hash 450066360, now seen corresponding path program 1 times [2022-11-20 10:30:40,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:30:40,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543020956] [2022-11-20 10:30:40,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:30:40,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:30:40,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:40,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:30:40,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:30:40,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543020956] [2022-11-20 10:30:40,894 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543020956] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:30:40,894 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:30:40,894 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:30:40,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812909476] [2022-11-20 10:30:40,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:30:40,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:30:40,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:30:40,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:30:40,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:30:40,896 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 286 out of 305 [2022-11-20 10:30:40,897 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 331 transitions, 978 flow. Second operand has 3 states, 3 states have (on average 287.6666666666667) internal successors, (863), 3 states have internal predecessors, (863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:30:40,898 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:30:40,898 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 286 of 305 [2022-11-20 10:30:40,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:30:41,119 INFO L130 PetriNetUnfolder]: 71/1163 cut-off events. [2022-11-20 10:30:41,119 INFO L131 PetriNetUnfolder]: For 121/122 co-relation queries the response was YES. [2022-11-20 10:30:41,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1459 conditions, 1163 events. 71/1163 cut-off events. For 121/122 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 4940 event pairs, 5 based on Foata normal form. 0/1014 useless extension candidates. Maximal degree in co-relation 1436. Up to 38 conditions per place. [2022-11-20 10:30:41,129 INFO L137 encePairwiseOnDemand]: 301/305 looper letters, 10 selfloop transitions, 3 changer transitions 0/304 dead transitions. [2022-11-20 10:30:41,129 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 304 transitions, 851 flow [2022-11-20 10:30:41,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:30:41,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 10:30:41,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 872 transitions. [2022-11-20 10:30:41,132 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9530054644808743 [2022-11-20 10:30:41,132 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 872 transitions. [2022-11-20 10:30:41,132 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 872 transitions. [2022-11-20 10:30:41,133 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:30:41,133 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 872 transitions. [2022-11-20 10:30:41,135 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 290.6666666666667) internal successors, (872), 3 states have internal predecessors, (872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:30:41,137 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 305.0) internal successors, (1220), 4 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:30:41,137 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 305.0) internal successors, (1220), 4 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:30:41,137 INFO L175 Difference]: Start difference. First operand has 328 places, 331 transitions, 978 flow. Second operand 3 states and 872 transitions. [2022-11-20 10:30:41,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 304 transitions, 851 flow [2022-11-20 10:30:41,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 304 transitions, 767 flow, removed 2 selfloop flow, removed 21 redundant places. [2022-11-20 10:30:41,145 INFO L231 Difference]: Finished difference. Result has 305 places, 301 transitions, 745 flow [2022-11-20 10:30:41,145 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=730, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=745, PETRI_PLACES=305, PETRI_TRANSITIONS=301} [2022-11-20 10:30:41,146 INFO L288 CegarLoopForPetriNet]: 285 programPoint places, 20 predicate places. [2022-11-20 10:30:41,146 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 301 transitions, 745 flow [2022-11-20 10:30:41,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 287.6666666666667) internal successors, (863), 3 states have internal predecessors, (863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:30:41,147 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:30:41,147 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] [2022-11-20 10:30:41,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 10:30:41,147 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-20 10:30:41,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:30:41,148 INFO L85 PathProgramCache]: Analyzing trace with hash -63631832, now seen corresponding path program 1 times [2022-11-20 10:30:41,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:30:41,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905975764] [2022-11-20 10:30:41,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:30:41,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:30:41,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:45,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:30:45,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:30:45,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905975764] [2022-11-20 10:30:45,197 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905975764] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:30:45,197 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:30:45,197 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-11-20 10:30:45,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476442114] [2022-11-20 10:30:45,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:30:45,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-20 10:30:45,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:30:45,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-20 10:30:45,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2022-11-20 10:30:45,205 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 305 [2022-11-20 10:30:45,210 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 301 transitions, 745 flow. Second operand has 18 states, 18 states have (on average 212.05555555555554) internal successors, (3817), 18 states have internal predecessors, (3817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:30:45,210 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:30:45,210 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 305 [2022-11-20 10:30:45,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:30:48,760 INFO L130 PetriNetUnfolder]: 1698/7570 cut-off events. [2022-11-20 10:30:48,760 INFO L131 PetriNetUnfolder]: For 347/351 co-relation queries the response was YES. [2022-11-20 10:30:48,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11339 conditions, 7570 events. 1698/7570 cut-off events. For 347/351 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 70369 event pairs, 1402 based on Foata normal form. 2/6779 useless extension candidates. Maximal degree in co-relation 11322. Up to 2632 conditions per place. [2022-11-20 10:30:48,826 INFO L137 encePairwiseOnDemand]: 283/305 looper letters, 92 selfloop transitions, 33 changer transitions 0/326 dead transitions. [2022-11-20 10:30:48,826 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 326 transitions, 1061 flow [2022-11-20 10:30:48,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-20 10:30:48,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-11-20 10:30:48,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 4324 transitions. [2022-11-20 10:30:48,839 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7088524590163935 [2022-11-20 10:30:48,839 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 4324 transitions. [2022-11-20 10:30:48,839 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 4324 transitions. [2022-11-20 10:30:48,842 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:30:48,842 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 4324 transitions. [2022-11-20 10:30:48,853 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 216.2) internal successors, (4324), 20 states have internal predecessors, (4324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:30:48,864 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 305.0) internal successors, (6405), 21 states have internal predecessors, (6405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:30:48,867 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 305.0) internal successors, (6405), 21 states have internal predecessors, (6405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:30:48,867 INFO L175 Difference]: Start difference. First operand has 305 places, 301 transitions, 745 flow. Second operand 20 states and 4324 transitions. [2022-11-20 10:30:48,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 326 transitions, 1061 flow [2022-11-20 10:30:48,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 326 transitions, 1058 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 10:30:48,881 INFO L231 Difference]: Finished difference. Result has 328 places, 311 transitions, 881 flow [2022-11-20 10:30:48,882 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=742, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=301, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=881, PETRI_PLACES=328, PETRI_TRANSITIONS=311} [2022-11-20 10:30:48,886 INFO L288 CegarLoopForPetriNet]: 285 programPoint places, 43 predicate places. [2022-11-20 10:30:48,886 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 311 transitions, 881 flow [2022-11-20 10:30:48,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 212.05555555555554) internal successors, (3817), 18 states have internal predecessors, (3817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:30:48,889 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:30:48,889 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] [2022-11-20 10:30:48,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 10:30:48,890 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-20 10:30:48,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:30:48,890 INFO L85 PathProgramCache]: Analyzing trace with hash -1270878461, now seen corresponding path program 1 times [2022-11-20 10:30:48,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:30:48,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888682434] [2022-11-20 10:30:48,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:30:48,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:30:48,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:50,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:30:50,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:30:50,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888682434] [2022-11-20 10:30:50,235 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888682434] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:30:50,235 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:30:50,235 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-20 10:30:50,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621654374] [2022-11-20 10:30:50,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:30:50,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-20 10:30:50,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:30:50,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-20 10:30:50,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=272, Unknown=0, NotChecked=0, Total=342 [2022-11-20 10:30:50,239 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 305 [2022-11-20 10:30:50,247 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 311 transitions, 881 flow. Second operand has 19 states, 19 states have (on average 203.3684210526316) internal successors, (3864), 19 states have internal predecessors, (3864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:30:50,247 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:30:50,247 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 305 [2022-11-20 10:30:50,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:30:52,622 INFO L130 PetriNetUnfolder]: 1729/7723 cut-off events. [2022-11-20 10:30:52,622 INFO L131 PetriNetUnfolder]: For 752/756 co-relation queries the response was YES. [2022-11-20 10:30:52,660 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11900 conditions, 7723 events. 1729/7723 cut-off events. For 752/756 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 71673 event pairs, 848 based on Foata normal form. 6/6940 useless extension candidates. Maximal degree in co-relation 11878. Up to 2610 conditions per place. [2022-11-20 10:30:52,687 INFO L137 encePairwiseOnDemand]: 283/305 looper letters, 115 selfloop transitions, 43 changer transitions 0/352 dead transitions. [2022-11-20 10:30:52,687 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 348 places, 352 transitions, 1341 flow [2022-11-20 10:30:52,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-20 10:30:52,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-20 10:30:52,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 4363 transitions. [2022-11-20 10:30:52,700 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6811865729898516 [2022-11-20 10:30:52,701 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 4363 transitions. [2022-11-20 10:30:52,701 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 4363 transitions. [2022-11-20 10:30:52,704 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:30:52,705 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 4363 transitions. [2022-11-20 10:30:52,716 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 207.76190476190476) internal successors, (4363), 21 states have internal predecessors, (4363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:30:52,726 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 305.0) internal successors, (6710), 22 states have internal predecessors, (6710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:30:52,729 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 305.0) internal successors, (6710), 22 states have internal predecessors, (6710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:30:52,729 INFO L175 Difference]: Start difference. First operand has 328 places, 311 transitions, 881 flow. Second operand 21 states and 4363 transitions. [2022-11-20 10:30:52,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 348 places, 352 transitions, 1341 flow [2022-11-20 10:30:52,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 352 transitions, 1309 flow, removed 2 selfloop flow, removed 12 redundant places. [2022-11-20 10:30:52,742 INFO L231 Difference]: Finished difference. Result has 343 places, 320 transitions, 1033 flow [2022-11-20 10:30:52,743 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=849, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=311, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1033, PETRI_PLACES=343, PETRI_TRANSITIONS=320} [2022-11-20 10:30:52,744 INFO L288 CegarLoopForPetriNet]: 285 programPoint places, 58 predicate places. [2022-11-20 10:30:52,744 INFO L495 AbstractCegarLoop]: Abstraction has has 343 places, 320 transitions, 1033 flow [2022-11-20 10:30:52,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 203.3684210526316) internal successors, (3864), 19 states have internal predecessors, (3864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:30:52,746 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:30:52,746 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] [2022-11-20 10:30:52,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-20 10:30:52,747 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-20 10:30:52,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:30:52,747 INFO L85 PathProgramCache]: Analyzing trace with hash 1877053161, now seen corresponding path program 2 times [2022-11-20 10:30:52,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:30:52,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390211715] [2022-11-20 10:30:52,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:30:52,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:30:52,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:54,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:30:54,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:30:54,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390211715] [2022-11-20 10:30:54,082 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390211715] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:30:54,082 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:30:54,083 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-20 10:30:54,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356071220] [2022-11-20 10:30:54,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:30:54,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-20 10:30:54,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:30:54,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-20 10:30:54,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2022-11-20 10:30:54,087 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 305 [2022-11-20 10:30:54,091 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 320 transitions, 1033 flow. Second operand has 19 states, 19 states have (on average 203.3684210526316) internal successors, (3864), 19 states have internal predecessors, (3864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:30:54,091 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:30:54,091 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 305 [2022-11-20 10:30:54,092 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:30:56,752 INFO L130 PetriNetUnfolder]: 1722/7629 cut-off events. [2022-11-20 10:30:56,753 INFO L131 PetriNetUnfolder]: For 917/921 co-relation queries the response was YES. [2022-11-20 10:30:56,783 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11880 conditions, 7629 events. 1722/7629 cut-off events. For 917/921 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 70807 event pairs, 852 based on Foata normal form. 6/6847 useless extension candidates. Maximal degree in co-relation 11851. Up to 2530 conditions per place. [2022-11-20 10:30:56,806 INFO L137 encePairwiseOnDemand]: 285/305 looper letters, 105 selfloop transitions, 37 changer transitions 0/336 dead transitions. [2022-11-20 10:30:56,807 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 336 transitions, 1369 flow [2022-11-20 10:30:56,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-20 10:30:56,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-11-20 10:30:56,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 3531 transitions. [2022-11-20 10:30:56,814 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6810028929604629 [2022-11-20 10:30:56,814 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 3531 transitions. [2022-11-20 10:30:56,814 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 3531 transitions. [2022-11-20 10:30:56,815 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:30:56,816 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 3531 transitions. [2022-11-20 10:30:56,824 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 207.7058823529412) internal successors, (3531), 17 states have internal predecessors, (3531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:30:56,833 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 305.0) internal successors, (5490), 18 states have internal predecessors, (5490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:30:56,835 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 305.0) internal successors, (5490), 18 states have internal predecessors, (5490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:30:56,835 INFO L175 Difference]: Start difference. First operand has 343 places, 320 transitions, 1033 flow. Second operand 17 states and 3531 transitions. [2022-11-20 10:30:56,835 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 336 transitions, 1369 flow [2022-11-20 10:30:56,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 336 transitions, 1339 flow, removed 5 selfloop flow, removed 10 redundant places. [2022-11-20 10:30:56,847 INFO L231 Difference]: Finished difference. Result has 347 places, 318 transitions, 1061 flow [2022-11-20 10:30:56,848 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=987, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=318, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1061, PETRI_PLACES=347, PETRI_TRANSITIONS=318} [2022-11-20 10:30:56,849 INFO L288 CegarLoopForPetriNet]: 285 programPoint places, 62 predicate places. [2022-11-20 10:30:56,849 INFO L495 AbstractCegarLoop]: Abstraction has has 347 places, 318 transitions, 1061 flow [2022-11-20 10:30:56,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 203.3684210526316) internal successors, (3864), 19 states have internal predecessors, (3864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:30:56,851 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:30:56,851 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:30:56,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-20 10:30:56,851 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-20 10:30:56,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:30:56,852 INFO L85 PathProgramCache]: Analyzing trace with hash -539717566, now seen corresponding path program 1 times [2022-11-20 10:30:56,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:30:56,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184215016] [2022-11-20 10:30:56,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:30:56,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:30:56,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:56,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:30:56,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:30:56,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184215016] [2022-11-20 10:30:56,928 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184215016] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:30:56,928 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:30:56,928 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:30:56,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553989175] [2022-11-20 10:30:56,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:30:56,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:30:56,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:30:56,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:30:56,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:30:56,931 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 276 out of 305 [2022-11-20 10:30:56,933 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 347 places, 318 transitions, 1061 flow. Second operand has 4 states, 4 states have (on average 277.5) internal successors, (1110), 4 states have internal predecessors, (1110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:30:56,933 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:30:56,933 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 276 of 305 [2022-11-20 10:30:56,933 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:30:57,231 INFO L130 PetriNetUnfolder]: 113/1529 cut-off events. [2022-11-20 10:30:57,231 INFO L131 PetriNetUnfolder]: For 207/207 co-relation queries the response was YES. [2022-11-20 10:30:57,237 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2314 conditions, 1529 events. 113/1529 cut-off events. For 207/207 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 6899 event pairs, 31 based on Foata normal form. 0/1372 useless extension candidates. Maximal degree in co-relation 2285. Up to 191 conditions per place. [2022-11-20 10:30:57,242 INFO L137 encePairwiseOnDemand]: 296/305 looper letters, 27 selfloop transitions, 4 changer transitions 0/330 dead transitions. [2022-11-20 10:30:57,243 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 330 transitions, 1153 flow [2022-11-20 10:30:57,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 10:30:57,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 10:30:57,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1416 transitions. [2022-11-20 10:30:57,246 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9285245901639344 [2022-11-20 10:30:57,246 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1416 transitions. [2022-11-20 10:30:57,246 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1416 transitions. [2022-11-20 10:30:57,247 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:30:57,247 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1416 transitions. [2022-11-20 10:30:57,249 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 283.2) internal successors, (1416), 5 states have internal predecessors, (1416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:30:57,252 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 305.0) internal successors, (1830), 6 states have internal predecessors, (1830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:30:57,252 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 305.0) internal successors, (1830), 6 states have internal predecessors, (1830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:30:57,253 INFO L175 Difference]: Start difference. First operand has 347 places, 318 transitions, 1061 flow. Second operand 5 states and 1416 transitions. [2022-11-20 10:30:57,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 330 transitions, 1153 flow [2022-11-20 10:30:57,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 330 transitions, 1079 flow, removed 0 selfloop flow, removed 16 redundant places. [2022-11-20 10:30:57,261 INFO L231 Difference]: Finished difference. Result has 338 places, 321 transitions, 1023 flow [2022-11-20 10:30:57,262 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=987, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=318, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=314, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1023, PETRI_PLACES=338, PETRI_TRANSITIONS=321} [2022-11-20 10:30:57,263 INFO L288 CegarLoopForPetriNet]: 285 programPoint places, 53 predicate places. [2022-11-20 10:30:57,263 INFO L495 AbstractCegarLoop]: Abstraction has has 338 places, 321 transitions, 1023 flow [2022-11-20 10:30:57,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 277.5) internal successors, (1110), 4 states have internal predecessors, (1110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:30:57,264 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:30:57,264 INFO L209 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:30:57,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-20 10:30:57,264 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-20 10:30:57,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:30:57,265 INFO L85 PathProgramCache]: Analyzing trace with hash -870761161, now seen corresponding path program 1 times [2022-11-20 10:30:57,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:30:57,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384479534] [2022-11-20 10:30:57,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:30:57,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:30:57,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:57,336 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 10:30:57,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:30:57,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384479534] [2022-11-20 10:30:57,337 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384479534] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:30:57,337 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:30:57,337 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:30:57,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361502614] [2022-11-20 10:30:57,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:30:57,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:30:57,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:30:57,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:30:57,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:30:57,340 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 276 out of 305 [2022-11-20 10:30:57,341 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 321 transitions, 1023 flow. Second operand has 4 states, 4 states have (on average 279.0) internal successors, (1116), 4 states have internal predecessors, (1116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:30:57,342 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:30:57,342 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 276 of 305 [2022-11-20 10:30:57,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:30:57,666 INFO L130 PetriNetUnfolder]: 109/1505 cut-off events. [2022-11-20 10:30:57,666 INFO L131 PetriNetUnfolder]: For 193/193 co-relation queries the response was YES. [2022-11-20 10:30:57,677 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2312 conditions, 1505 events. 109/1505 cut-off events. For 193/193 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 6750 event pairs, 10 based on Foata normal form. 20/1418 useless extension candidates. Maximal degree in co-relation 2280. Up to 80 conditions per place. [2022-11-20 10:30:57,682 INFO L137 encePairwiseOnDemand]: 298/305 looper letters, 16 selfloop transitions, 8 changer transitions 0/323 dead transitions. [2022-11-20 10:30:57,683 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 323 transitions, 1077 flow [2022-11-20 10:30:57,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 10:30:57,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 10:30:57,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1403 transitions. [2022-11-20 10:30:57,686 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.92 [2022-11-20 10:30:57,686 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1403 transitions. [2022-11-20 10:30:57,686 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1403 transitions. [2022-11-20 10:30:57,687 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:30:57,687 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1403 transitions. [2022-11-20 10:30:57,689 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 280.6) internal successors, (1403), 5 states have internal predecessors, (1403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:30:57,692 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 305.0) internal successors, (1830), 6 states have internal predecessors, (1830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:30:57,693 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 305.0) internal successors, (1830), 6 states have internal predecessors, (1830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:30:57,693 INFO L175 Difference]: Start difference. First operand has 338 places, 321 transitions, 1023 flow. Second operand 5 states and 1403 transitions. [2022-11-20 10:30:57,693 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 323 transitions, 1077 flow [2022-11-20 10:30:57,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 339 places, 323 transitions, 1075 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 10:30:57,702 INFO L231 Difference]: Finished difference. Result has 340 places, 320 transitions, 1037 flow [2022-11-20 10:30:57,703 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=1013, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=319, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=311, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1037, PETRI_PLACES=340, PETRI_TRANSITIONS=320} [2022-11-20 10:30:57,703 INFO L288 CegarLoopForPetriNet]: 285 programPoint places, 55 predicate places. [2022-11-20 10:30:57,704 INFO L495 AbstractCegarLoop]: Abstraction has has 340 places, 320 transitions, 1037 flow [2022-11-20 10:30:57,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 279.0) internal successors, (1116), 4 states have internal predecessors, (1116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:30:57,705 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:30:57,705 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:30:57,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-20 10:30:57,705 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-20 10:30:57,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:30:57,706 INFO L85 PathProgramCache]: Analyzing trace with hash -1223791416, now seen corresponding path program 1 times [2022-11-20 10:30:57,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:30:57,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309197545] [2022-11-20 10:30:57,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:30:57,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:30:57,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:57,816 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:30:57,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:30:57,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309197545] [2022-11-20 10:30:57,817 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309197545] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:30:57,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1285787174] [2022-11-20 10:30:57,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:30:57,818 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:30:57,818 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3464a7-cb8f-4f7f-9c8b-b1247d24636d/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:30:57,819 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3464a7-cb8f-4f7f-9c8b-b1247d24636d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:30:57,834 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3464a7-cb8f-4f7f-9c8b-b1247d24636d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 10:30:57,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:57,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 10:30:57,968 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:30:58,019 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:30:58,019 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:30:58,020 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1285787174] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:30:58,020 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:30:58,020 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-20 10:30:58,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752635167] [2022-11-20 10:30:58,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:30:58,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 10:30:58,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:30:58,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:30:58,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-20 10:30:58,024 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 276 out of 305 [2022-11-20 10:30:58,025 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 320 transitions, 1037 flow. Second operand has 6 states, 6 states have (on average 278.1666666666667) internal successors, (1669), 6 states have internal predecessors, (1669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:30:58,026 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:30:58,026 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 276 of 305 [2022-11-20 10:30:58,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:30:58,400 INFO L130 PetriNetUnfolder]: 105/1481 cut-off events. [2022-11-20 10:30:58,400 INFO L131 PetriNetUnfolder]: For 253/253 co-relation queries the response was YES. [2022-11-20 10:30:58,412 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2307 conditions, 1481 events. 105/1481 cut-off events. For 253/253 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 6587 event pairs, 3 based on Foata normal form. 20/1394 useless extension candidates. Maximal degree in co-relation 2275. Up to 84 conditions per place. [2022-11-20 10:30:58,417 INFO L137 encePairwiseOnDemand]: 299/305 looper letters, 23 selfloop transitions, 6 changer transitions 0/328 dead transitions. [2022-11-20 10:30:58,417 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 328 transitions, 1117 flow [2022-11-20 10:30:58,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 10:30:58,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 10:30:58,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1963 transitions. [2022-11-20 10:30:58,423 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9194379391100702 [2022-11-20 10:30:58,423 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1963 transitions. [2022-11-20 10:30:58,424 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1963 transitions. [2022-11-20 10:30:58,425 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:30:58,425 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1963 transitions. [2022-11-20 10:30:58,428 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 280.42857142857144) internal successors, (1963), 7 states have internal predecessors, (1963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:30:58,431 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 305.0) internal successors, (2440), 8 states have internal predecessors, (2440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:30:58,432 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 305.0) internal successors, (2440), 8 states have internal predecessors, (2440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:30:58,432 INFO L175 Difference]: Start difference. First operand has 340 places, 320 transitions, 1037 flow. Second operand 7 states and 1963 transitions. [2022-11-20 10:30:58,432 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 328 transitions, 1117 flow [2022-11-20 10:30:58,438 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 328 transitions, 1105 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 10:30:58,442 INFO L231 Difference]: Finished difference. Result has 341 places, 318 transitions, 1029 flow [2022-11-20 10:30:58,443 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=1017, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=318, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=312, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1029, PETRI_PLACES=341, PETRI_TRANSITIONS=318} [2022-11-20 10:30:58,444 INFO L288 CegarLoopForPetriNet]: 285 programPoint places, 56 predicate places. [2022-11-20 10:30:58,444 INFO L495 AbstractCegarLoop]: Abstraction has has 341 places, 318 transitions, 1029 flow [2022-11-20 10:30:58,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 278.1666666666667) internal successors, (1669), 6 states have internal predecessors, (1669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:30:58,445 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:30:58,446 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:30:58,456 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3464a7-cb8f-4f7f-9c8b-b1247d24636d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 10:30:58,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3464a7-cb8f-4f7f-9c8b-b1247d24636d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-20 10:30:58,652 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-20 10:30:58,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:30:58,653 INFO L85 PathProgramCache]: Analyzing trace with hash -273658069, now seen corresponding path program 1 times [2022-11-20 10:30:58,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:30:58,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092995965] [2022-11-20 10:30:58,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:30:58,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:30:58,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:59,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:30:59,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:30:59,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092995965] [2022-11-20 10:30:59,788 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1092995965] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:30:59,788 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:30:59,788 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-11-20 10:30:59,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674768676] [2022-11-20 10:30:59,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:30:59,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-20 10:30:59,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:30:59,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-20 10:30:59,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2022-11-20 10:30:59,793 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 216 out of 305 [2022-11-20 10:30:59,797 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 318 transitions, 1029 flow. Second operand has 17 states, 17 states have (on average 218.8235294117647) internal successors, (3720), 17 states have internal predecessors, (3720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:30:59,798 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:30:59,798 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 216 of 305 [2022-11-20 10:30:59,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:31:01,942 INFO L130 PetriNetUnfolder]: 1763/7839 cut-off events. [2022-11-20 10:31:01,942 INFO L131 PetriNetUnfolder]: For 1105/1109 co-relation queries the response was YES. [2022-11-20 10:31:01,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12421 conditions, 7839 events. 1763/7839 cut-off events. For 1105/1109 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 70413 event pairs, 1362 based on Foata normal form. 2/7129 useless extension candidates. Maximal degree in co-relation 12388. Up to 2756 conditions per place. [2022-11-20 10:31:02,026 INFO L137 encePairwiseOnDemand]: 289/305 looper letters, 85 selfloop transitions, 29 changer transitions 0/326 dead transitions. [2022-11-20 10:31:02,026 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 326 transitions, 1277 flow [2022-11-20 10:31:02,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-20 10:31:02,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-20 10:31:02,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 3341 transitions. [2022-11-20 10:31:02,033 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7302732240437159 [2022-11-20 10:31:02,033 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 3341 transitions. [2022-11-20 10:31:02,034 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 3341 transitions. [2022-11-20 10:31:02,035 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:31:02,035 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 3341 transitions. [2022-11-20 10:31:02,041 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 222.73333333333332) internal successors, (3341), 15 states have internal predecessors, (3341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:31:02,047 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 305.0) internal successors, (4880), 16 states have internal predecessors, (4880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:31:02,049 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 305.0) internal successors, (4880), 16 states have internal predecessors, (4880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:31:02,050 INFO L175 Difference]: Start difference. First operand has 341 places, 318 transitions, 1029 flow. Second operand 15 states and 3341 transitions. [2022-11-20 10:31:02,050 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 355 places, 326 transitions, 1277 flow [2022-11-20 10:31:02,058 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 350 places, 326 transitions, 1262 flow, removed 3 selfloop flow, removed 5 redundant places. [2022-11-20 10:31:02,065 INFO L231 Difference]: Finished difference. Result has 353 places, 321 transitions, 1108 flow [2022-11-20 10:31:02,065 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=1006, PETRI_DIFFERENCE_MINUEND_PLACES=336, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=290, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1108, PETRI_PLACES=353, PETRI_TRANSITIONS=321} [2022-11-20 10:31:02,066 INFO L288 CegarLoopForPetriNet]: 285 programPoint places, 68 predicate places. [2022-11-20 10:31:02,066 INFO L495 AbstractCegarLoop]: Abstraction has has 353 places, 321 transitions, 1108 flow [2022-11-20 10:31:02,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 218.8235294117647) internal successors, (3720), 17 states have internal predecessors, (3720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:31:02,068 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:31:02,068 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:31:02,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-20 10:31:02,069 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-20 10:31:02,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:31:02,069 INFO L85 PathProgramCache]: Analyzing trace with hash 1528622662, now seen corresponding path program 1 times [2022-11-20 10:31:02,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:31:02,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695025487] [2022-11-20 10:31:02,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:31:02,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:31:02,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:31:07,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:31:07,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:31:07,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695025487] [2022-11-20 10:31:07,719 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695025487] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:31:07,719 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:31:07,719 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-20 10:31:07,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596363840] [2022-11-20 10:31:07,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:31:07,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-20 10:31:07,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:31:07,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-20 10:31:07,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=285, Unknown=0, NotChecked=0, Total=380 [2022-11-20 10:31:07,724 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 207 out of 305 [2022-11-20 10:31:07,728 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 353 places, 321 transitions, 1108 flow. Second operand has 20 states, 20 states have (on average 209.8) internal successors, (4196), 20 states have internal predecessors, (4196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:31:07,728 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:31:07,728 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 207 of 305 [2022-11-20 10:31:07,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:31:11,718 INFO L130 PetriNetUnfolder]: 1622/7688 cut-off events. [2022-11-20 10:31:11,718 INFO L131 PetriNetUnfolder]: For 1102/1106 co-relation queries the response was YES. [2022-11-20 10:31:11,771 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12169 conditions, 7688 events. 1622/7688 cut-off events. For 1102/1106 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 70297 event pairs, 1322 based on Foata normal form. 8/7015 useless extension candidates. Maximal degree in co-relation 12134. Up to 2493 conditions per place. [2022-11-20 10:31:11,796 INFO L137 encePairwiseOnDemand]: 286/305 looper letters, 95 selfloop transitions, 42 changer transitions 0/342 dead transitions. [2022-11-20 10:31:11,796 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 372 places, 342 transitions, 1451 flow [2022-11-20 10:31:11,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-20 10:31:11,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-11-20 10:31:11,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 4259 transitions. [2022-11-20 10:31:11,806 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6981967213114754 [2022-11-20 10:31:11,807 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 4259 transitions. [2022-11-20 10:31:11,807 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 4259 transitions. [2022-11-20 10:31:11,809 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:31:11,809 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 4259 transitions. [2022-11-20 10:31:11,816 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 212.95) internal successors, (4259), 20 states have internal predecessors, (4259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:31:11,826 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 305.0) internal successors, (6405), 21 states have internal predecessors, (6405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:31:11,829 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 305.0) internal successors, (6405), 21 states have internal predecessors, (6405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:31:11,829 INFO L175 Difference]: Start difference. First operand has 353 places, 321 transitions, 1108 flow. Second operand 20 states and 4259 transitions. [2022-11-20 10:31:11,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 372 places, 342 transitions, 1451 flow [2022-11-20 10:31:11,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 362 places, 342 transitions, 1424 flow, removed 2 selfloop flow, removed 10 redundant places. [2022-11-20 10:31:11,842 INFO L231 Difference]: Finished difference. Result has 365 places, 324 transitions, 1223 flow [2022-11-20 10:31:11,843 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=1076, PETRI_DIFFERENCE_MINUEND_PLACES=343, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=320, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1223, PETRI_PLACES=365, PETRI_TRANSITIONS=324} [2022-11-20 10:31:11,844 INFO L288 CegarLoopForPetriNet]: 285 programPoint places, 80 predicate places. [2022-11-20 10:31:11,845 INFO L495 AbstractCegarLoop]: Abstraction has has 365 places, 324 transitions, 1223 flow [2022-11-20 10:31:11,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 209.8) internal successors, (4196), 20 states have internal predecessors, (4196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:31:11,846 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:31:11,846 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:31:11,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-20 10:31:11,847 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-20 10:31:11,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:31:11,847 INFO L85 PathProgramCache]: Analyzing trace with hash 1387768118, now seen corresponding path program 2 times [2022-11-20 10:31:11,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:31:11,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883248302] [2022-11-20 10:31:11,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:31:11,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:31:11,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:31:13,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:31:13,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:31:13,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883248302] [2022-11-20 10:31:13,454 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883248302] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:31:13,454 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:31:13,454 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-20 10:31:13,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619040173] [2022-11-20 10:31:13,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:31:13,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-20 10:31:13,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:31:13,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-20 10:31:13,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2022-11-20 10:31:13,458 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 207 out of 305 [2022-11-20 10:31:13,460 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 324 transitions, 1223 flow. Second operand has 18 states, 18 states have (on average 210.11111111111111) internal successors, (3782), 18 states have internal predecessors, (3782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:31:13,461 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:31:13,461 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 207 of 305 [2022-11-20 10:31:13,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:31:15,871 INFO L130 PetriNetUnfolder]: 1618/7707 cut-off events. [2022-11-20 10:31:15,871 INFO L131 PetriNetUnfolder]: For 1364/1368 co-relation queries the response was YES. [2022-11-20 10:31:15,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12326 conditions, 7707 events. 1618/7707 cut-off events. For 1364/1368 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 70993 event pairs, 787 based on Foata normal form. 3/7028 useless extension candidates. Maximal degree in co-relation 12288. Up to 2417 conditions per place. [2022-11-20 10:31:15,945 INFO L137 encePairwiseOnDemand]: 288/305 looper letters, 95 selfloop transitions, 31 changer transitions 0/331 dead transitions. [2022-11-20 10:31:15,945 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 376 places, 331 transitions, 1493 flow [2022-11-20 10:31:15,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 10:31:15,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-11-20 10:31:15,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2995 transitions. [2022-11-20 10:31:15,950 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7014051522248244 [2022-11-20 10:31:15,950 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2995 transitions. [2022-11-20 10:31:15,950 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2995 transitions. [2022-11-20 10:31:15,952 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:31:15,952 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2995 transitions. [2022-11-20 10:31:15,956 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 213.92857142857142) internal successors, (2995), 14 states have internal predecessors, (2995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:31:15,961 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 305.0) internal successors, (4575), 15 states have internal predecessors, (4575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:31:15,962 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 305.0) internal successors, (4575), 15 states have internal predecessors, (4575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:31:15,962 INFO L175 Difference]: Start difference. First operand has 365 places, 324 transitions, 1223 flow. Second operand 14 states and 2995 transitions. [2022-11-20 10:31:15,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 376 places, 331 transitions, 1493 flow [2022-11-20 10:31:15,973 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 331 transitions, 1425 flow, removed 5 selfloop flow, removed 19 redundant places. [2022-11-20 10:31:15,977 INFO L231 Difference]: Finished difference. Result has 357 places, 321 transitions, 1205 flow [2022-11-20 10:31:15,978 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=1143, PETRI_DIFFERENCE_MINUEND_PLACES=344, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=290, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1205, PETRI_PLACES=357, PETRI_TRANSITIONS=321} [2022-11-20 10:31:15,978 INFO L288 CegarLoopForPetriNet]: 285 programPoint places, 72 predicate places. [2022-11-20 10:31:15,978 INFO L495 AbstractCegarLoop]: Abstraction has has 357 places, 321 transitions, 1205 flow [2022-11-20 10:31:15,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 210.11111111111111) internal successors, (3782), 18 states have internal predecessors, (3782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:31:15,979 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:31:15,979 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:31:15,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-20 10:31:15,980 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-20 10:31:15,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:31:15,980 INFO L85 PathProgramCache]: Analyzing trace with hash 1693646516, now seen corresponding path program 1 times [2022-11-20 10:31:15,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:31:15,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110533525] [2022-11-20 10:31:15,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:31:15,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:31:16,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:31:19,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:31:19,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:31:19,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110533525] [2022-11-20 10:31:19,561 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110533525] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:31:19,561 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:31:19,561 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2022-11-20 10:31:19,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291579436] [2022-11-20 10:31:19,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:31:19,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-11-20 10:31:19,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:31:19,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-11-20 10:31:19,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=798, Unknown=0, NotChecked=0, Total=930 [2022-11-20 10:31:19,566 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 193 out of 305 [2022-11-20 10:31:19,571 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 357 places, 321 transitions, 1205 flow. Second operand has 31 states, 31 states have (on average 195.0) internal successors, (6045), 31 states have internal predecessors, (6045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:31:19,571 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:31:19,571 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 193 of 305 [2022-11-20 10:31:19,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:31:24,478 INFO L130 PetriNetUnfolder]: 2661/10800 cut-off events. [2022-11-20 10:31:24,478 INFO L131 PetriNetUnfolder]: For 1870/1874 co-relation queries the response was YES. [2022-11-20 10:31:24,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17767 conditions, 10800 events. 2661/10800 cut-off events. For 1870/1874 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 104452 event pairs, 1986 based on Foata normal form. 2/9759 useless extension candidates. Maximal degree in co-relation 17734. Up to 4022 conditions per place. [2022-11-20 10:31:24,567 INFO L137 encePairwiseOnDemand]: 266/305 looper letters, 138 selfloop transitions, 68 changer transitions 0/389 dead transitions. [2022-11-20 10:31:24,567 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 393 places, 389 transitions, 1902 flow [2022-11-20 10:31:24,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-11-20 10:31:24,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-11-20 10:31:24,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 7332 transitions. [2022-11-20 10:31:24,578 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6497120070890563 [2022-11-20 10:31:24,578 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 7332 transitions. [2022-11-20 10:31:24,578 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 7332 transitions. [2022-11-20 10:31:24,581 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:31:24,582 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 7332 transitions. [2022-11-20 10:31:24,592 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 198.16216216216216) internal successors, (7332), 37 states have internal predecessors, (7332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:31:24,604 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 305.0) internal successors, (11590), 38 states have internal predecessors, (11590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:31:24,605 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 305.0) internal successors, (11590), 38 states have internal predecessors, (11590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:31:24,606 INFO L175 Difference]: Start difference. First operand has 357 places, 321 transitions, 1205 flow. Second operand 37 states and 7332 transitions. [2022-11-20 10:31:24,606 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 393 places, 389 transitions, 1902 flow [2022-11-20 10:31:24,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 380 places, 389 transitions, 1840 flow, removed 0 selfloop flow, removed 13 redundant places. [2022-11-20 10:31:24,626 INFO L231 Difference]: Finished difference. Result has 395 places, 355 transitions, 1604 flow [2022-11-20 10:31:24,627 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=1143, PETRI_DIFFERENCE_MINUEND_PLACES=344, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=268, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=1604, PETRI_PLACES=395, PETRI_TRANSITIONS=355} [2022-11-20 10:31:24,627 INFO L288 CegarLoopForPetriNet]: 285 programPoint places, 110 predicate places. [2022-11-20 10:31:24,627 INFO L495 AbstractCegarLoop]: Abstraction has has 395 places, 355 transitions, 1604 flow [2022-11-20 10:31:24,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 195.0) internal successors, (6045), 31 states have internal predecessors, (6045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:31:24,628 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:31:24,628 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:31:24,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-20 10:31:24,629 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting t1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-20 10:31:24,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:31:24,629 INFO L85 PathProgramCache]: Analyzing trace with hash 963435259, now seen corresponding path program 1 times [2022-11-20 10:31:24,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:31:24,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698397735] [2022-11-20 10:31:24,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:31:24,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:31:24,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:31:25,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:31:25,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:31:25,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698397735] [2022-11-20 10:31:25,988 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698397735] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:31:25,988 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:31:25,988 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-20 10:31:25,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322059143] [2022-11-20 10:31:25,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:31:25,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-20 10:31:25,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:31:25,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-20 10:31:25,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=443, Unknown=0, NotChecked=0, Total=506 [2022-11-20 10:31:25,992 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 206 out of 305 [2022-11-20 10:31:25,995 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 395 places, 355 transitions, 1604 flow. Second operand has 23 states, 23 states have (on average 208.65217391304347) internal successors, (4799), 23 states have internal predecessors, (4799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:31:25,995 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:31:25,995 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 206 of 305 [2022-11-20 10:31:25,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:31:35,031 INFO L130 PetriNetUnfolder]: 6583/21347 cut-off events. [2022-11-20 10:31:35,031 INFO L131 PetriNetUnfolder]: For 3745/3785 co-relation queries the response was YES. [2022-11-20 10:31:35,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38440 conditions, 21347 events. 6583/21347 cut-off events. For 3745/3785 co-relation queries the response was YES. Maximal size of possible extension queue 397. Compared 215685 event pairs, 1104 based on Foata normal form. 132/19951 useless extension candidates. Maximal degree in co-relation 38392. Up to 3159 conditions per place. [2022-11-20 10:31:35,221 INFO L137 encePairwiseOnDemand]: 274/305 looper letters, 408 selfloop transitions, 141 changer transitions 0/750 dead transitions. [2022-11-20 10:31:35,221 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 434 places, 750 transitions, 3817 flow [2022-11-20 10:31:35,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-11-20 10:31:35,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2022-11-20 10:31:35,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 8726 transitions. [2022-11-20 10:31:35,233 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7152459016393443 [2022-11-20 10:31:35,233 INFO L72 ComplementDD]: Start complementDD. Operand 40 states and 8726 transitions. [2022-11-20 10:31:35,233 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 8726 transitions. [2022-11-20 10:31:35,237 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:31:35,237 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 40 states and 8726 transitions. [2022-11-20 10:31:35,251 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 41 states, 40 states have (on average 218.15) internal successors, (8726), 40 states have internal predecessors, (8726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:31:35,264 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 41 states, 41 states have (on average 305.0) internal successors, (12505), 41 states have internal predecessors, (12505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:31:35,266 INFO L81 ComplementDD]: Finished complementDD. Result has 41 states, 41 states have (on average 305.0) internal successors, (12505), 41 states have internal predecessors, (12505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:31:35,266 INFO L175 Difference]: Start difference. First operand has 395 places, 355 transitions, 1604 flow. Second operand 40 states and 8726 transitions. [2022-11-20 10:31:35,266 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 434 places, 750 transitions, 3817 flow [2022-11-20 10:31:35,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 415 places, 750 transitions, 3550 flow, removed 88 selfloop flow, removed 19 redundant places. [2022-11-20 10:31:35,311 INFO L231 Difference]: Finished difference. Result has 426 places, 456 transitions, 2203 flow [2022-11-20 10:31:35,312 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=1395, PETRI_DIFFERENCE_MINUEND_PLACES=376, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=354, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=2203, PETRI_PLACES=426, PETRI_TRANSITIONS=456} [2022-11-20 10:31:35,312 INFO L288 CegarLoopForPetriNet]: 285 programPoint places, 141 predicate places. [2022-11-20 10:31:35,312 INFO L495 AbstractCegarLoop]: Abstraction has has 426 places, 456 transitions, 2203 flow [2022-11-20 10:31:35,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 208.65217391304347) internal successors, (4799), 23 states have internal predecessors, (4799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:31:35,313 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:31:35,313 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:31:35,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-20 10:31:35,314 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-20 10:31:35,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:31:35,314 INFO L85 PathProgramCache]: Analyzing trace with hash 578067855, now seen corresponding path program 1 times [2022-11-20 10:31:35,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:31:35,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011053858] [2022-11-20 10:31:35,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:31:35,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:31:35,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:31:39,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:31:39,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:31:39,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011053858] [2022-11-20 10:31:39,898 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011053858] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:31:39,899 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:31:39,899 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-11-20 10:31:39,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056273928] [2022-11-20 10:31:39,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:31:39,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-11-20 10:31:39,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:31:39,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-11-20 10:31:39,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=967, Unknown=0, NotChecked=0, Total=1122 [2022-11-20 10:31:39,904 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 305 [2022-11-20 10:31:39,908 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 426 places, 456 transitions, 2203 flow. Second operand has 34 states, 34 states have (on average 186.05882352941177) internal successors, (6326), 34 states have internal predecessors, (6326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:31:39,908 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:31:39,908 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 305 [2022-11-20 10:31:39,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:31:50,625 INFO L130 PetriNetUnfolder]: 7601/24417 cut-off events. [2022-11-20 10:31:50,625 INFO L131 PetriNetUnfolder]: For 9586/9814 co-relation queries the response was YES. [2022-11-20 10:31:50,832 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48451 conditions, 24417 events. 7601/24417 cut-off events. For 9586/9814 co-relation queries the response was YES. Maximal size of possible extension queue 475. Compared 258663 event pairs, 3226 based on Foata normal form. 24/22355 useless extension candidates. Maximal degree in co-relation 48394. Up to 11359 conditions per place. [2022-11-20 10:31:50,892 INFO L137 encePairwiseOnDemand]: 267/305 looper letters, 259 selfloop transitions, 95 changer transitions 0/542 dead transitions. [2022-11-20 10:31:50,892 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 462 places, 542 transitions, 3230 flow [2022-11-20 10:31:50,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-11-20 10:31:50,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-11-20 10:31:50,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 7015 transitions. [2022-11-20 10:31:50,900 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6216216216216216 [2022-11-20 10:31:50,901 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 7015 transitions. [2022-11-20 10:31:50,901 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 7015 transitions. [2022-11-20 10:31:50,903 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:31:50,904 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 7015 transitions. [2022-11-20 10:31:50,915 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 189.59459459459458) internal successors, (7015), 37 states have internal predecessors, (7015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:31:50,925 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 305.0) internal successors, (11590), 38 states have internal predecessors, (11590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:31:50,928 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 305.0) internal successors, (11590), 38 states have internal predecessors, (11590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:31:50,928 INFO L175 Difference]: Start difference. First operand has 426 places, 456 transitions, 2203 flow. Second operand 37 states and 7015 transitions. [2022-11-20 10:31:50,928 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 462 places, 542 transitions, 3230 flow [2022-11-20 10:31:51,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 455 places, 542 transitions, 3140 flow, removed 38 selfloop flow, removed 7 redundant places. [2022-11-20 10:31:51,029 INFO L231 Difference]: Finished difference. Result has 466 places, 474 transitions, 2531 flow [2022-11-20 10:31:51,030 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=2119, PETRI_DIFFERENCE_MINUEND_PLACES=419, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=456, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=361, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=2531, PETRI_PLACES=466, PETRI_TRANSITIONS=474} [2022-11-20 10:31:51,030 INFO L288 CegarLoopForPetriNet]: 285 programPoint places, 181 predicate places. [2022-11-20 10:31:51,031 INFO L495 AbstractCegarLoop]: Abstraction has has 466 places, 474 transitions, 2531 flow [2022-11-20 10:31:51,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 186.05882352941177) internal successors, (6326), 34 states have internal predecessors, (6326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:31:51,032 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:31:51,032 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:31:51,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-20 10:31:51,033 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting t1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-20 10:31:51,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:31:51,033 INFO L85 PathProgramCache]: Analyzing trace with hash 67393768, now seen corresponding path program 1 times [2022-11-20 10:31:51,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:31:51,033 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111861840] [2022-11-20 10:31:51,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:31:51,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:31:51,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:31:53,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:31:53,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:31:53,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111861840] [2022-11-20 10:31:53,051 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111861840] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:31:53,051 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:31:53,051 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2022-11-20 10:31:53,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246272925] [2022-11-20 10:31:53,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:31:53,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-20 10:31:53,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:31:53,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-20 10:31:53,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=524, Unknown=0, NotChecked=0, Total=600 [2022-11-20 10:31:53,056 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 203 out of 305 [2022-11-20 10:31:53,059 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 466 places, 474 transitions, 2531 flow. Second operand has 25 states, 25 states have (on average 205.56) internal successors, (5139), 25 states have internal predecessors, (5139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:31:53,059 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:31:53,059 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 203 of 305 [2022-11-20 10:31:53,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:32:04,354 INFO L130 PetriNetUnfolder]: 7774/26161 cut-off events. [2022-11-20 10:32:04,355 INFO L131 PetriNetUnfolder]: For 13404/13701 co-relation queries the response was YES. [2022-11-20 10:32:04,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52699 conditions, 26161 events. 7774/26161 cut-off events. For 13404/13701 co-relation queries the response was YES. Maximal size of possible extension queue 465. Compared 279200 event pairs, 1332 based on Foata normal form. 195/24341 useless extension candidates. Maximal degree in co-relation 52631. Up to 2899 conditions per place. [2022-11-20 10:32:04,688 INFO L137 encePairwiseOnDemand]: 274/305 looper letters, 418 selfloop transitions, 185 changer transitions 0/802 dead transitions. [2022-11-20 10:32:04,688 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 506 places, 802 transitions, 4766 flow [2022-11-20 10:32:04,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-11-20 10:32:04,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2022-11-20 10:32:04,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 8764 transitions. [2022-11-20 10:32:04,703 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7008396641343463 [2022-11-20 10:32:04,703 INFO L72 ComplementDD]: Start complementDD. Operand 41 states and 8764 transitions. [2022-11-20 10:32:04,703 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 8764 transitions. [2022-11-20 10:32:04,707 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:32:04,708 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 41 states and 8764 transitions. [2022-11-20 10:32:04,725 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 42 states, 41 states have (on average 213.7560975609756) internal successors, (8764), 41 states have internal predecessors, (8764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:32:04,739 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 42 states, 42 states have (on average 305.0) internal successors, (12810), 42 states have internal predecessors, (12810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:32:04,742 INFO L81 ComplementDD]: Finished complementDD. Result has 42 states, 42 states have (on average 305.0) internal successors, (12810), 42 states have internal predecessors, (12810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:32:04,742 INFO L175 Difference]: Start difference. First operand has 466 places, 474 transitions, 2531 flow. Second operand 41 states and 8764 transitions. [2022-11-20 10:32:04,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 506 places, 802 transitions, 4766 flow [2022-11-20 10:32:04,864 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 480 places, 802 transitions, 4587 flow, removed 27 selfloop flow, removed 26 redundant places. [2022-11-20 10:32:04,876 INFO L231 Difference]: Finished difference. Result has 489 places, 540 transitions, 3305 flow [2022-11-20 10:32:04,877 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=2367, PETRI_DIFFERENCE_MINUEND_PLACES=440, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=473, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=337, PETRI_DIFFERENCE_SUBTRAHEND_STATES=41, PETRI_FLOW=3305, PETRI_PLACES=489, PETRI_TRANSITIONS=540} [2022-11-20 10:32:04,877 INFO L288 CegarLoopForPetriNet]: 285 programPoint places, 204 predicate places. [2022-11-20 10:32:04,878 INFO L495 AbstractCegarLoop]: Abstraction has has 489 places, 540 transitions, 3305 flow [2022-11-20 10:32:04,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 205.56) internal successors, (5139), 25 states have internal predecessors, (5139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:32:04,879 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:32:04,879 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:32:04,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-20 10:32:04,879 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting t1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-20 10:32:04,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:32:04,880 INFO L85 PathProgramCache]: Analyzing trace with hash 2048569117, now seen corresponding path program 1 times [2022-11-20 10:32:04,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:32:04,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015962606] [2022-11-20 10:32:04,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:32:04,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:32:04,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:32:07,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:32:07,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:32:07,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015962606] [2022-11-20 10:32:07,296 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015962606] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:32:07,296 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:32:07,296 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-11-20 10:32:07,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14765045] [2022-11-20 10:32:07,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:32:07,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-11-20 10:32:07,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:32:07,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-11-20 10:32:07,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=587, Unknown=0, NotChecked=0, Total=702 [2022-11-20 10:32:07,301 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 207 out of 305 [2022-11-20 10:32:07,304 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 489 places, 540 transitions, 3305 flow. Second operand has 27 states, 27 states have (on average 209.22222222222223) internal successors, (5649), 27 states have internal predecessors, (5649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:32:07,305 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:32:07,305 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 207 of 305 [2022-11-20 10:32:07,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:32:18,786 INFO L130 PetriNetUnfolder]: 8169/29270 cut-off events. [2022-11-20 10:32:18,787 INFO L131 PetriNetUnfolder]: For 20531/21056 co-relation queries the response was YES. [2022-11-20 10:32:19,104 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60341 conditions, 29270 events. 8169/29270 cut-off events. For 20531/21056 co-relation queries the response was YES. Maximal size of possible extension queue 538. Compared 326071 event pairs, 4674 based on Foata normal form. 87/26843 useless extension candidates. Maximal degree in co-relation 60265. Up to 10329 conditions per place. [2022-11-20 10:32:19,176 INFO L137 encePairwiseOnDemand]: 271/305 looper letters, 334 selfloop transitions, 114 changer transitions 0/721 dead transitions. [2022-11-20 10:32:19,176 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 524 places, 721 transitions, 5021 flow [2022-11-20 10:32:19,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-20 10:32:19,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-11-20 10:32:19,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 7707 transitions. [2022-11-20 10:32:19,184 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7019125683060109 [2022-11-20 10:32:19,185 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 7707 transitions. [2022-11-20 10:32:19,185 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 7707 transitions. [2022-11-20 10:32:19,187 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:32:19,188 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 7707 transitions. [2022-11-20 10:32:19,199 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 214.08333333333334) internal successors, (7707), 36 states have internal predecessors, (7707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:32:19,209 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 305.0) internal successors, (11285), 37 states have internal predecessors, (11285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:32:19,212 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 305.0) internal successors, (11285), 37 states have internal predecessors, (11285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:32:19,212 INFO L175 Difference]: Start difference. First operand has 489 places, 540 transitions, 3305 flow. Second operand 36 states and 7707 transitions. [2022-11-20 10:32:19,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 524 places, 721 transitions, 5021 flow [2022-11-20 10:32:19,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 513 places, 721 transitions, 4930 flow, removed 24 selfloop flow, removed 11 redundant places. [2022-11-20 10:32:19,439 INFO L231 Difference]: Finished difference. Result has 525 places, 597 transitions, 4093 flow [2022-11-20 10:32:19,439 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=3219, PETRI_DIFFERENCE_MINUEND_PLACES=478, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=540, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=439, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=4093, PETRI_PLACES=525, PETRI_TRANSITIONS=597} [2022-11-20 10:32:19,440 INFO L288 CegarLoopForPetriNet]: 285 programPoint places, 240 predicate places. [2022-11-20 10:32:19,440 INFO L495 AbstractCegarLoop]: Abstraction has has 525 places, 597 transitions, 4093 flow [2022-11-20 10:32:19,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 209.22222222222223) internal successors, (5649), 27 states have internal predecessors, (5649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:32:19,441 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:32:19,442 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:32:19,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-20 10:32:19,442 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting t1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-20 10:32:19,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:32:19,443 INFO L85 PathProgramCache]: Analyzing trace with hash -918865980, now seen corresponding path program 1 times [2022-11-20 10:32:19,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:32:19,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181763221] [2022-11-20 10:32:19,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:32:19,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:32:19,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:32:21,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:32:21,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:32:21,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181763221] [2022-11-20 10:32:21,096 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181763221] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:32:21,096 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:32:21,096 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-20 10:32:21,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489579515] [2022-11-20 10:32:21,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:32:21,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-20 10:32:21,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:32:21,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-20 10:32:21,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=406, Unknown=0, NotChecked=0, Total=462 [2022-11-20 10:32:21,102 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 206 out of 305 [2022-11-20 10:32:21,107 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 525 places, 597 transitions, 4093 flow. Second operand has 22 states, 22 states have (on average 208.9090909090909) internal successors, (4596), 22 states have internal predecessors, (4596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:32:21,107 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:32:21,107 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 206 of 305 [2022-11-20 10:32:21,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand