./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread-ext/09_fmaxsym.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac486fca-6d42-4900-b509-6c1c105dc952/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac486fca-6d42-4900-b509-6c1c105dc952/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac486fca-6d42-4900-b509-6c1c105dc952/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac486fca-6d42-4900-b509-6c1c105dc952/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-ext/09_fmaxsym.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac486fca-6d42-4900-b509-6c1c105dc952/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac486fca-6d42-4900-b509-6c1c105dc952/bin/uautomizer-tPACEb0tL8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0bf02669c3dd381b0745ab8dce392518dfe698af15c4a94bd383f1dab20a8c06 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 12:29:03,658 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:29:03,662 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:29:03,689 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:29:03,690 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:29:03,691 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:29:03,693 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:29:03,695 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:29:03,698 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:29:03,699 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:29:03,700 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:29:03,702 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:29:03,702 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:29:03,704 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:29:03,705 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:29:03,707 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:29:03,708 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:29:03,709 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:29:03,712 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:29:03,714 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:29:03,717 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:29:03,719 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:29:03,720 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:29:03,721 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:29:03,727 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:29:03,727 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:29:03,728 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:29:03,729 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:29:03,729 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:29:03,731 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:29:03,731 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:29:03,732 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:29:03,733 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:29:03,734 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:29:03,736 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:29:03,736 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:29:03,737 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:29:03,738 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:29:03,738 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:29:03,739 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:29:03,740 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:29:03,741 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac486fca-6d42-4900-b509-6c1c105dc952/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-16 12:29:03,769 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:29:03,769 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:29:03,770 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:29:03,770 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:29:03,771 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:29:03,772 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:29:03,773 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:29:03,773 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:29:03,773 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:29:03,774 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:29:03,774 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 12:29:03,774 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 12:29:03,775 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 12:29:03,775 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 12:29:03,775 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:29:03,776 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 12:29:03,776 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:29:03,776 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 12:29:03,777 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-16 12:29:03,777 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 12:29:03,777 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 12:29:03,778 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:29:03,778 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 12:29:03,779 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:29:03,779 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:29:03,779 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:29:03,779 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:29:03,780 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:29:03,799 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:29:03,799 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 12:29:03,799 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 12:29:03,799 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 12:29:03,800 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 12:29:03,800 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 12:29:03,800 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 12:29:03,800 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_ac486fca-6d42-4900-b509-6c1c105dc952/bin/uautomizer-tPACEb0tL8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac486fca-6d42-4900-b509-6c1c105dc952/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0bf02669c3dd381b0745ab8dce392518dfe698af15c4a94bd383f1dab20a8c06 [2022-11-16 12:29:04,224 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:29:04,272 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:29:04,278 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:29:04,280 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:29:04,281 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:29:04,282 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac486fca-6d42-4900-b509-6c1c105dc952/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/pthread-ext/09_fmaxsym.i [2022-11-16 12:29:04,381 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac486fca-6d42-4900-b509-6c1c105dc952/bin/uautomizer-tPACEb0tL8/data/5ef01db6c/d627b51e7f9f42a88620600b0be49602/FLAG987cd1e04 [2022-11-16 12:29:05,125 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:29:05,126 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac486fca-6d42-4900-b509-6c1c105dc952/sv-benchmarks/c/pthread-ext/09_fmaxsym.i [2022-11-16 12:29:05,140 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac486fca-6d42-4900-b509-6c1c105dc952/bin/uautomizer-tPACEb0tL8/data/5ef01db6c/d627b51e7f9f42a88620600b0be49602/FLAG987cd1e04 [2022-11-16 12:29:05,379 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac486fca-6d42-4900-b509-6c1c105dc952/bin/uautomizer-tPACEb0tL8/data/5ef01db6c/d627b51e7f9f42a88620600b0be49602 [2022-11-16 12:29:05,383 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:29:05,385 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:29:05,387 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:29:05,400 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:29:05,409 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:29:05,410 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:29:05" (1/1) ... [2022-11-16 12:29:05,412 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f611fb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:29:05, skipping insertion in model container [2022-11-16 12:29:05,412 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:29:05" (1/1) ... [2022-11-16 12:29:05,421 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:29:05,490 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:29:05,957 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac486fca-6d42-4900-b509-6c1c105dc952/sv-benchmarks/c/pthread-ext/09_fmaxsym.i[30422,30435] [2022-11-16 12:29:05,969 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:29:05,985 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 12:29:06,052 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac486fca-6d42-4900-b509-6c1c105dc952/sv-benchmarks/c/pthread-ext/09_fmaxsym.i[30422,30435] [2022-11-16 12:29:06,057 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:29:06,094 INFO L208 MainTranslator]: Completed translation [2022-11-16 12:29:06,094 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:29:06 WrapperNode [2022-11-16 12:29:06,095 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:29:06,096 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 12:29:06,096 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 12:29:06,096 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 12:29:06,106 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:29:06" (1/1) ... [2022-11-16 12:29:06,142 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:29:06" (1/1) ... [2022-11-16 12:29:06,182 INFO L138 Inliner]: procedures = 171, calls = 24, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 81 [2022-11-16 12:29:06,183 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 12:29:06,184 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 12:29:06,184 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 12:29:06,184 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 12:29:06,195 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:29:06" (1/1) ... [2022-11-16 12:29:06,196 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:29:06" (1/1) ... [2022-11-16 12:29:06,205 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:29:06" (1/1) ... [2022-11-16 12:29:06,205 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:29:06" (1/1) ... [2022-11-16 12:29:06,213 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:29:06" (1/1) ... [2022-11-16 12:29:06,217 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:29:06" (1/1) ... [2022-11-16 12:29:06,219 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:29:06" (1/1) ... [2022-11-16 12:29:06,221 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:29:06" (1/1) ... [2022-11-16 12:29:06,224 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 12:29:06,225 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 12:29:06,225 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 12:29:06,226 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 12:29:06,227 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:29:06" (1/1) ... [2022-11-16 12:29:06,246 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:29:06,261 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac486fca-6d42-4900-b509-6c1c105dc952/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:29:06,284 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac486fca-6d42-4900-b509-6c1c105dc952/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 12:29:06,294 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac486fca-6d42-4900-b509-6c1c105dc952/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 12:29:06,343 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 12:29:06,344 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2022-11-16 12:29:06,344 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2022-11-16 12:29:06,344 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 12:29:06,346 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 12:29:06,347 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 12:29:06,347 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 12:29:06,347 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 12:29:06,348 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 12:29:06,348 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 12:29:06,350 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-16 12:29:06,525 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 12:29:06,527 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 12:29:06,794 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 12:29:06,884 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 12:29:06,885 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-16 12:29:06,887 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:29:06 BoogieIcfgContainer [2022-11-16 12:29:06,888 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 12:29:06,890 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 12:29:06,890 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 12:29:06,910 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 12:29:06,910 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:29:05" (1/3) ... [2022-11-16 12:29:06,911 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3df40d60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:29:06, skipping insertion in model container [2022-11-16 12:29:06,911 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:29:06" (2/3) ... [2022-11-16 12:29:06,912 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3df40d60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:29:06, skipping insertion in model container [2022-11-16 12:29:06,912 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:29:06" (3/3) ... [2022-11-16 12:29:06,914 INFO L112 eAbstractionObserver]: Analyzing ICFG 09_fmaxsym.i [2022-11-16 12:29:06,929 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 12:29:06,949 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 12:29:06,950 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-11-16 12:29:06,950 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 12:29:07,088 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-16 12:29:07,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 83 places, 86 transitions, 177 flow [2022-11-16 12:29:07,216 INFO L130 PetriNetUnfolder]: 7/97 cut-off events. [2022-11-16 12:29:07,217 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 12:29:07,224 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102 conditions, 97 events. 7/97 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 79 event pairs, 0 based on Foata normal form. 0/84 useless extension candidates. Maximal degree in co-relation 61. Up to 4 conditions per place. [2022-11-16 12:29:07,224 INFO L82 GeneralOperation]: Start removeDead. Operand has 83 places, 86 transitions, 177 flow [2022-11-16 12:29:07,230 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 83 places, 86 transitions, 177 flow [2022-11-16 12:29:07,244 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:29:07,253 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;@770106d2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:29:07,253 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2022-11-16 12:29:07,275 INFO L130 PetriNetUnfolder]: 2/53 cut-off events. [2022-11-16 12:29:07,275 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 12:29:07,276 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:29:07,276 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:29:07,277 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-11-16 12:29:07,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:29:07,284 INFO L85 PathProgramCache]: Analyzing trace with hash -859537947, now seen corresponding path program 1 times [2022-11-16 12:29:07,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:29:07,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989894775] [2022-11-16 12:29:07,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:29:07,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:29:07,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:29:07,532 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 12:29:07,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:29:07,624 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 12:29:07,626 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-16 12:29:07,628 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 9 remaining) [2022-11-16 12:29:07,631 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 9 remaining) [2022-11-16 12:29:07,632 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 9 remaining) [2022-11-16 12:29:07,633 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 9 remaining) [2022-11-16 12:29:07,634 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 9 remaining) [2022-11-16 12:29:07,635 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 9 remaining) [2022-11-16 12:29:07,636 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 9 remaining) [2022-11-16 12:29:07,637 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 9 remaining) [2022-11-16 12:29:07,637 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 9 remaining) [2022-11-16 12:29:07,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 12:29:07,639 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-16 12:29:07,651 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-16 12:29:07,651 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-16 12:29:07,758 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-16 12:29:07,774 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 129 places, 135 transitions, 282 flow [2022-11-16 12:29:07,854 INFO L130 PetriNetUnfolder]: 13/159 cut-off events. [2022-11-16 12:29:07,854 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-16 12:29:07,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 169 conditions, 159 events. 13/159 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 274 event pairs, 0 based on Foata normal form. 0/135 useless extension candidates. Maximal degree in co-relation 109. Up to 6 conditions per place. [2022-11-16 12:29:07,857 INFO L82 GeneralOperation]: Start removeDead. Operand has 129 places, 135 transitions, 282 flow [2022-11-16 12:29:07,861 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 129 places, 135 transitions, 282 flow [2022-11-16 12:29:07,863 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:29:07,864 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;@770106d2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:29:07,864 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2022-11-16 12:29:07,890 INFO L130 PetriNetUnfolder]: 4/83 cut-off events. [2022-11-16 12:29:07,891 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-16 12:29:07,891 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:29:07,891 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 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] [2022-11-16 12:29:07,892 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-16 12:29:07,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:29:07,892 INFO L85 PathProgramCache]: Analyzing trace with hash -1886205292, now seen corresponding path program 1 times [2022-11-16 12:29:07,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:29:07,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091432674] [2022-11-16 12:29:07,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:29:07,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:29:07,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:29:07,933 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 12:29:07,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:29:07,981 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 12:29:07,982 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-16 12:29:07,983 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2022-11-16 12:29:07,983 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2022-11-16 12:29:07,984 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2022-11-16 12:29:07,984 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2022-11-16 12:29:07,984 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 13 remaining) [2022-11-16 12:29:07,985 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 13 remaining) [2022-11-16 12:29:07,985 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 13 remaining) [2022-11-16 12:29:07,985 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 13 remaining) [2022-11-16 12:29:07,986 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 13 remaining) [2022-11-16 12:29:07,986 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 13 remaining) [2022-11-16 12:29:07,986 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2022-11-16 12:29:07,987 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2022-11-16 12:29:07,987 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2022-11-16 12:29:07,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 12:29:07,987 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-16 12:29:07,988 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-16 12:29:07,989 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-16 12:29:08,058 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-16 12:29:08,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 175 places, 184 transitions, 389 flow [2022-11-16 12:29:08,252 INFO L130 PetriNetUnfolder]: 19/221 cut-off events. [2022-11-16 12:29:08,252 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-11-16 12:29:08,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 237 conditions, 221 events. 19/221 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 533 event pairs, 0 based on Foata normal form. 0/186 useless extension candidates. Maximal degree in co-relation 163. Up to 8 conditions per place. [2022-11-16 12:29:08,262 INFO L82 GeneralOperation]: Start removeDead. Operand has 175 places, 184 transitions, 389 flow [2022-11-16 12:29:08,273 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 175 places, 184 transitions, 389 flow [2022-11-16 12:29:08,276 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:29:08,278 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;@770106d2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:29:08,278 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2022-11-16 12:29:08,317 INFO L130 PetriNetUnfolder]: 6/106 cut-off events. [2022-11-16 12:29:08,317 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-16 12:29:08,317 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:29:08,318 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] [2022-11-16 12:29:08,318 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-16 12:29:08,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:29:08,319 INFO L85 PathProgramCache]: Analyzing trace with hash 1203136208, now seen corresponding path program 1 times [2022-11-16 12:29:08,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:29:08,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971565665] [2022-11-16 12:29:08,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:29:08,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:29:08,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:29:08,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:29:08,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:29:08,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971565665] [2022-11-16 12:29:08,989 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971565665] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:29:08,989 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:29:08,990 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 12:29:08,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885466432] [2022-11-16 12:29:08,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:29:09,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:29:09,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:29:09,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:29:09,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:29:09,045 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 184 [2022-11-16 12:29:09,051 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 184 transitions, 389 flow. Second operand has 7 states, 7 states have (on average 146.57142857142858) internal successors, (1026), 7 states have internal predecessors, (1026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:29:09,052 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:29:09,052 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 184 [2022-11-16 12:29:09,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:29:09,835 INFO L130 PetriNetUnfolder]: 474/1554 cut-off events. [2022-11-16 12:29:09,835 INFO L131 PetriNetUnfolder]: For 394/394 co-relation queries the response was YES. [2022-11-16 12:29:09,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2504 conditions, 1554 events. 474/1554 cut-off events. For 394/394 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 11348 event pairs, 46 based on Foata normal form. 711/1964 useless extension candidates. Maximal degree in co-relation 1386. Up to 342 conditions per place. [2022-11-16 12:29:09,864 INFO L137 encePairwiseOnDemand]: 167/184 looper letters, 49 selfloop transitions, 5 changer transitions 0/194 dead transitions. [2022-11-16 12:29:09,865 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 194 transitions, 577 flow [2022-11-16 12:29:09,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:29:09,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 12:29:09,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1121 transitions. [2022-11-16 12:29:09,887 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8703416149068323 [2022-11-16 12:29:09,888 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1121 transitions. [2022-11-16 12:29:09,889 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1121 transitions. [2022-11-16 12:29:09,892 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:29:09,896 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1121 transitions. [2022-11-16 12:29:09,903 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 160.14285714285714) internal successors, (1121), 7 states have internal predecessors, (1121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:29:09,913 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 184.0) internal successors, (1472), 8 states have internal predecessors, (1472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:29:09,915 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 184.0) internal successors, (1472), 8 states have internal predecessors, (1472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:29:09,917 INFO L175 Difference]: Start difference. First operand has 175 places, 184 transitions, 389 flow. Second operand 7 states and 1121 transitions. [2022-11-16 12:29:09,919 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 194 transitions, 577 flow [2022-11-16 12:29:09,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 194 transitions, 561 flow, removed 8 selfloop flow, removed 0 redundant places. [2022-11-16 12:29:09,930 INFO L231 Difference]: Finished difference. Result has 171 places, 164 transitions, 353 flow [2022-11-16 12:29:09,933 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=343, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=353, PETRI_PLACES=171, PETRI_TRANSITIONS=164} [2022-11-16 12:29:09,938 INFO L288 CegarLoopForPetriNet]: 175 programPoint places, -4 predicate places. [2022-11-16 12:29:09,938 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 164 transitions, 353 flow [2022-11-16 12:29:09,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 146.57142857142858) internal successors, (1026), 7 states have internal predecessors, (1026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:29:09,939 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:29:09,940 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] [2022-11-16 12:29:09,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 12:29:09,940 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-16 12:29:09,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:29:09,941 INFO L85 PathProgramCache]: Analyzing trace with hash -1357482544, now seen corresponding path program 1 times [2022-11-16 12:29:09,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:29:09,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903207111] [2022-11-16 12:29:09,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:29:09,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:29:09,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:29:10,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:29:10,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:29:10,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903207111] [2022-11-16 12:29:10,140 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903207111] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:29:10,140 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:29:10,140 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:29:10,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704063391] [2022-11-16 12:29:10,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:29:10,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:29:10,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:29:10,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:29:10,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:29:10,146 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 184 [2022-11-16 12:29:10,148 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 164 transitions, 353 flow. Second operand has 6 states, 6 states have (on average 148.83333333333334) internal successors, (893), 6 states have internal predecessors, (893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:29:10,148 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:29:10,148 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 184 [2022-11-16 12:29:10,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:29:10,694 INFO L130 PetriNetUnfolder]: 377/1466 cut-off events. [2022-11-16 12:29:10,694 INFO L131 PetriNetUnfolder]: For 211/211 co-relation queries the response was YES. [2022-11-16 12:29:10,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2248 conditions, 1466 events. 377/1466 cut-off events. For 211/211 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 10441 event pairs, 30 based on Foata normal form. 0/1223 useless extension candidates. Maximal degree in co-relation 1804. Up to 304 conditions per place. [2022-11-16 12:29:10,716 INFO L137 encePairwiseOnDemand]: 178/184 looper letters, 46 selfloop transitions, 5 changer transitions 0/193 dead transitions. [2022-11-16 12:29:10,717 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 193 transitions, 563 flow [2022-11-16 12:29:10,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:29:10,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 12:29:10,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1081 transitions. [2022-11-16 12:29:10,721 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8392857142857143 [2022-11-16 12:29:10,721 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1081 transitions. [2022-11-16 12:29:10,722 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1081 transitions. [2022-11-16 12:29:10,723 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:29:10,723 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1081 transitions. [2022-11-16 12:29:10,726 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 154.42857142857142) internal successors, (1081), 7 states have internal predecessors, (1081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:29:10,730 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 184.0) internal successors, (1472), 8 states have internal predecessors, (1472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:29:10,732 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 184.0) internal successors, (1472), 8 states have internal predecessors, (1472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:29:10,732 INFO L175 Difference]: Start difference. First operand has 171 places, 164 transitions, 353 flow. Second operand 7 states and 1081 transitions. [2022-11-16 12:29:10,732 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 193 transitions, 563 flow [2022-11-16 12:29:10,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 193 transitions, 554 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-16 12:29:10,745 INFO L231 Difference]: Finished difference. Result has 171 places, 163 transitions, 352 flow [2022-11-16 12:29:10,746 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=342, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=352, PETRI_PLACES=171, PETRI_TRANSITIONS=163} [2022-11-16 12:29:10,747 INFO L288 CegarLoopForPetriNet]: 175 programPoint places, -4 predicate places. [2022-11-16 12:29:10,748 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 163 transitions, 352 flow [2022-11-16 12:29:10,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 148.83333333333334) internal successors, (893), 6 states have internal predecessors, (893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:29:10,749 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:29:10,750 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:29:10,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 12:29:10,750 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-16 12:29:10,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:29:10,751 INFO L85 PathProgramCache]: Analyzing trace with hash 1869448739, now seen corresponding path program 1 times [2022-11-16 12:29:10,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:29:10,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939065376] [2022-11-16 12:29:10,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:29:10,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:29:10,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:29:10,797 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 12:29:10,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:29:10,829 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 12:29:10,830 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-16 12:29:10,830 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2022-11-16 12:29:10,830 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2022-11-16 12:29:10,831 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2022-11-16 12:29:10,832 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2022-11-16 12:29:10,833 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2022-11-16 12:29:10,833 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2022-11-16 12:29:10,833 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2022-11-16 12:29:10,834 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2022-11-16 12:29:10,835 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 17 remaining) [2022-11-16 12:29:10,835 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 17 remaining) [2022-11-16 12:29:10,835 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 17 remaining) [2022-11-16 12:29:10,836 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2022-11-16 12:29:10,836 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2022-11-16 12:29:10,836 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2022-11-16 12:29:10,836 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2022-11-16 12:29:10,837 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2022-11-16 12:29:10,840 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2022-11-16 12:29:10,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 12:29:10,841 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-11-16 12:29:10,842 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-16 12:29:10,842 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-11-16 12:29:10,901 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-16 12:29:10,904 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 221 places, 233 transitions, 498 flow [2022-11-16 12:29:10,962 INFO L130 PetriNetUnfolder]: 25/283 cut-off events. [2022-11-16 12:29:10,962 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2022-11-16 12:29:10,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 306 conditions, 283 events. 25/283 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 825 event pairs, 0 based on Foata normal form. 0/237 useless extension candidates. Maximal degree in co-relation 229. Up to 10 conditions per place. [2022-11-16 12:29:10,966 INFO L82 GeneralOperation]: Start removeDead. Operand has 221 places, 233 transitions, 498 flow [2022-11-16 12:29:10,970 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 221 places, 233 transitions, 498 flow [2022-11-16 12:29:10,972 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:29:10,973 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;@770106d2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:29:10,973 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2022-11-16 12:29:10,986 INFO L130 PetriNetUnfolder]: 6/106 cut-off events. [2022-11-16 12:29:10,986 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-16 12:29:10,986 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:29:10,986 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] [2022-11-16 12:29:10,987 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-16 12:29:10,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:29:10,987 INFO L85 PathProgramCache]: Analyzing trace with hash -607394080, now seen corresponding path program 1 times [2022-11-16 12:29:10,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:29:10,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300904139] [2022-11-16 12:29:10,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:29:10,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:29:11,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:29:11,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:29:11,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:29:11,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300904139] [2022-11-16 12:29:11,186 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300904139] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:29:11,187 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:29:11,187 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 12:29:11,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731814749] [2022-11-16 12:29:11,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:29:11,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:29:11,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:29:11,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:29:11,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:29:11,191 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 233 [2022-11-16 12:29:11,193 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 233 transitions, 498 flow. Second operand has 7 states, 7 states have (on average 188.57142857142858) internal successors, (1320), 7 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:29:11,194 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:29:11,194 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 233 [2022-11-16 12:29:11,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:29:13,449 INFO L130 PetriNetUnfolder]: 1921/6889 cut-off events. [2022-11-16 12:29:13,449 INFO L131 PetriNetUnfolder]: For 2101/2101 co-relation queries the response was YES. [2022-11-16 12:29:13,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10490 conditions, 6889 events. 1921/6889 cut-off events. For 2101/2101 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 68931 event pairs, 699 based on Foata normal form. 2799/8324 useless extension candidates. Maximal degree in co-relation 4726. Up to 1395 conditions per place. [2022-11-16 12:29:13,605 INFO L137 encePairwiseOnDemand]: 213/233 looper letters, 67 selfloop transitions, 5 changer transitions 0/254 dead transitions. [2022-11-16 12:29:13,605 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 254 transitions, 789 flow [2022-11-16 12:29:13,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:29:13,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 12:29:13,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1451 transitions. [2022-11-16 12:29:13,611 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8896382587369712 [2022-11-16 12:29:13,611 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1451 transitions. [2022-11-16 12:29:13,611 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1451 transitions. [2022-11-16 12:29:13,612 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:29:13,614 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1451 transitions. [2022-11-16 12:29:13,619 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 207.28571428571428) internal successors, (1451), 7 states have internal predecessors, (1451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:29:13,624 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 233.0) internal successors, (1864), 8 states have internal predecessors, (1864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:29:13,625 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 233.0) internal successors, (1864), 8 states have internal predecessors, (1864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:29:13,626 INFO L175 Difference]: Start difference. First operand has 221 places, 233 transitions, 498 flow. Second operand 7 states and 1451 transitions. [2022-11-16 12:29:13,627 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 254 transitions, 789 flow [2022-11-16 12:29:13,633 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 254 transitions, 747 flow, removed 21 selfloop flow, removed 0 redundant places. [2022-11-16 12:29:13,640 INFO L231 Difference]: Finished difference. Result has 216 places, 209 transitions, 448 flow [2022-11-16 12:29:13,641 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=233, PETRI_DIFFERENCE_MINUEND_FLOW=438, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=448, PETRI_PLACES=216, PETRI_TRANSITIONS=209} [2022-11-16 12:29:13,645 INFO L288 CegarLoopForPetriNet]: 221 programPoint places, -5 predicate places. [2022-11-16 12:29:13,645 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 209 transitions, 448 flow [2022-11-16 12:29:13,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 188.57142857142858) internal successors, (1320), 7 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:29:13,647 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:29:13,647 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] [2022-11-16 12:29:13,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 12:29:13,648 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-16 12:29:13,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:29:13,649 INFO L85 PathProgramCache]: Analyzing trace with hash -1649346343, now seen corresponding path program 1 times [2022-11-16 12:29:13,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:29:13,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534373874] [2022-11-16 12:29:13,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:29:13,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:29:13,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:29:13,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:29:13,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:29:13,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534373874] [2022-11-16 12:29:13,788 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534373874] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:29:13,788 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:29:13,788 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:29:13,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66708823] [2022-11-16 12:29:13,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:29:13,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:29:13,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:29:13,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:29:13,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:29:13,791 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 233 [2022-11-16 12:29:13,793 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 209 transitions, 448 flow. Second operand has 6 states, 6 states have (on average 190.83333333333334) internal successors, (1145), 6 states have internal predecessors, (1145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:29:13,793 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:29:13,794 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 233 [2022-11-16 12:29:13,794 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:29:15,403 INFO L130 PetriNetUnfolder]: 1539/4870 cut-off events. [2022-11-16 12:29:15,403 INFO L131 PetriNetUnfolder]: For 678/678 co-relation queries the response was YES. [2022-11-16 12:29:15,447 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7668 conditions, 4870 events. 1539/4870 cut-off events. For 678/678 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 44545 event pairs, 138 based on Foata normal form. 0/4096 useless extension candidates. Maximal degree in co-relation 6572. Up to 1136 conditions per place. [2022-11-16 12:29:15,500 INFO L137 encePairwiseOnDemand]: 227/233 looper letters, 64 selfloop transitions, 5 changer transitions 0/253 dead transitions. [2022-11-16 12:29:15,500 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 253 transitions, 749 flow [2022-11-16 12:29:15,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:29:15,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 12:29:15,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1393 transitions. [2022-11-16 12:29:15,505 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8540772532188842 [2022-11-16 12:29:15,505 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1393 transitions. [2022-11-16 12:29:15,505 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1393 transitions. [2022-11-16 12:29:15,507 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:29:15,507 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1393 transitions. [2022-11-16 12:29:15,511 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 199.0) internal successors, (1393), 7 states have internal predecessors, (1393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:29:15,515 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 233.0) internal successors, (1864), 8 states have internal predecessors, (1864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:29:15,516 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 233.0) internal successors, (1864), 8 states have internal predecessors, (1864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:29:15,516 INFO L175 Difference]: Start difference. First operand has 216 places, 209 transitions, 448 flow. Second operand 7 states and 1393 transitions. [2022-11-16 12:29:15,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 253 transitions, 749 flow [2022-11-16 12:29:15,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 253 transitions, 740 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-16 12:29:15,524 INFO L231 Difference]: Finished difference. Result has 216 places, 208 transitions, 447 flow [2022-11-16 12:29:15,525 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=233, PETRI_DIFFERENCE_MINUEND_FLOW=437, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=447, PETRI_PLACES=216, PETRI_TRANSITIONS=208} [2022-11-16 12:29:15,526 INFO L288 CegarLoopForPetriNet]: 221 programPoint places, -5 predicate places. [2022-11-16 12:29:15,526 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 208 transitions, 447 flow [2022-11-16 12:29:15,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 190.83333333333334) internal successors, (1145), 6 states have internal predecessors, (1145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:29:15,527 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:29:15,527 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:29:15,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 12:29:15,528 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-16 12:29:15,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:29:15,528 INFO L85 PathProgramCache]: Analyzing trace with hash 876047865, now seen corresponding path program 1 times [2022-11-16 12:29:15,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:29:15,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659440736] [2022-11-16 12:29:15,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:29:15,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:29:15,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:29:15,913 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-16 12:29:15,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:29:15,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659440736] [2022-11-16 12:29:15,914 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659440736] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:29:15,914 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:29:15,914 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 12:29:15,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512811646] [2022-11-16 12:29:15,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:29:15,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:29:15,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:29:15,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:29:15,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:29:15,917 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 233 [2022-11-16 12:29:15,920 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 208 transitions, 447 flow. Second operand has 7 states, 7 states have (on average 188.71428571428572) internal successors, (1321), 7 states have internal predecessors, (1321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:29:15,920 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:29:15,920 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 233 [2022-11-16 12:29:15,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:29:17,445 INFO L130 PetriNetUnfolder]: 2095/5241 cut-off events. [2022-11-16 12:29:17,445 INFO L131 PetriNetUnfolder]: For 658/658 co-relation queries the response was YES. [2022-11-16 12:29:17,485 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8581 conditions, 5241 events. 2095/5241 cut-off events. For 658/658 co-relation queries the response was YES. Maximal size of possible extension queue 241. Compared 44898 event pairs, 224 based on Foata normal form. 0/4468 useless extension candidates. Maximal degree in co-relation 8522. Up to 1377 conditions per place. [2022-11-16 12:29:17,554 INFO L137 encePairwiseOnDemand]: 227/233 looper letters, 62 selfloop transitions, 5 changer transitions 0/247 dead transitions. [2022-11-16 12:29:17,554 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 247 transitions, 709 flow [2022-11-16 12:29:17,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:29:17,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 12:29:17,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1377 transitions. [2022-11-16 12:29:17,559 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8442673206621705 [2022-11-16 12:29:17,559 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1377 transitions. [2022-11-16 12:29:17,560 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1377 transitions. [2022-11-16 12:29:17,561 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:29:17,561 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1377 transitions. [2022-11-16 12:29:17,565 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 196.71428571428572) internal successors, (1377), 7 states have internal predecessors, (1377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:29:17,569 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 233.0) internal successors, (1864), 8 states have internal predecessors, (1864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:29:17,572 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 233.0) internal successors, (1864), 8 states have internal predecessors, (1864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:29:17,573 INFO L175 Difference]: Start difference. First operand has 216 places, 208 transitions, 447 flow. Second operand 7 states and 1377 transitions. [2022-11-16 12:29:17,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 247 transitions, 709 flow [2022-11-16 12:29:17,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 247 transitions, 700 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-16 12:29:17,580 INFO L231 Difference]: Finished difference. Result has 216 places, 207 transitions, 446 flow [2022-11-16 12:29:17,581 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=233, PETRI_DIFFERENCE_MINUEND_FLOW=436, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=446, PETRI_PLACES=216, PETRI_TRANSITIONS=207} [2022-11-16 12:29:17,584 INFO L288 CegarLoopForPetriNet]: 221 programPoint places, -5 predicate places. [2022-11-16 12:29:17,584 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 207 transitions, 446 flow [2022-11-16 12:29:17,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 188.71428571428572) internal successors, (1321), 7 states have internal predecessors, (1321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:29:17,585 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:29:17,585 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:29:17,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 12:29:17,586 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-16 12:29:17,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:29:17,587 INFO L85 PathProgramCache]: Analyzing trace with hash 1387681040, now seen corresponding path program 1 times [2022-11-16 12:29:17,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:29:17,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602092860] [2022-11-16 12:29:17,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:29:17,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:29:17,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:29:17,694 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-16 12:29:17,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:29:17,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602092860] [2022-11-16 12:29:17,695 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602092860] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:29:17,695 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:29:17,695 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:29:17,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355329707] [2022-11-16 12:29:17,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:29:17,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:29:17,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:29:17,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:29:17,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:29:17,699 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 233 [2022-11-16 12:29:17,700 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 207 transitions, 446 flow. Second operand has 6 states, 6 states have (on average 191.0) internal successors, (1146), 6 states have internal predecessors, (1146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:29:17,701 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:29:17,701 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 233 [2022-11-16 12:29:17,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:29:18,863 INFO L130 PetriNetUnfolder]: 1268/3484 cut-off events. [2022-11-16 12:29:18,863 INFO L131 PetriNetUnfolder]: For 628/628 co-relation queries the response was YES. [2022-11-16 12:29:18,894 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6000 conditions, 3484 events. 1268/3484 cut-off events. For 628/628 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 30238 event pairs, 44 based on Foata normal form. 0/3069 useless extension candidates. Maximal degree in co-relation 5945. Up to 952 conditions per place. [2022-11-16 12:29:18,938 INFO L137 encePairwiseOnDemand]: 227/233 looper letters, 59 selfloop transitions, 5 changer transitions 0/246 dead transitions. [2022-11-16 12:29:18,938 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 246 transitions, 702 flow [2022-11-16 12:29:18,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:29:18,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 12:29:18,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1388 transitions. [2022-11-16 12:29:18,952 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8510116492949111 [2022-11-16 12:29:18,953 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1388 transitions. [2022-11-16 12:29:18,953 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1388 transitions. [2022-11-16 12:29:18,954 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:29:18,954 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1388 transitions. [2022-11-16 12:29:18,959 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 198.28571428571428) internal successors, (1388), 7 states have internal predecessors, (1388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:29:18,964 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 233.0) internal successors, (1864), 8 states have internal predecessors, (1864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:29:18,965 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 233.0) internal successors, (1864), 8 states have internal predecessors, (1864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:29:18,965 INFO L175 Difference]: Start difference. First operand has 216 places, 207 transitions, 446 flow. Second operand 7 states and 1388 transitions. [2022-11-16 12:29:18,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 246 transitions, 702 flow [2022-11-16 12:29:18,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 246 transitions, 693 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-16 12:29:18,974 INFO L231 Difference]: Finished difference. Result has 216 places, 206 transitions, 445 flow [2022-11-16 12:29:18,975 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=233, PETRI_DIFFERENCE_MINUEND_FLOW=435, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=445, PETRI_PLACES=216, PETRI_TRANSITIONS=206} [2022-11-16 12:29:18,978 INFO L288 CegarLoopForPetriNet]: 221 programPoint places, -5 predicate places. [2022-11-16 12:29:18,978 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 206 transitions, 445 flow [2022-11-16 12:29:18,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 191.0) internal successors, (1146), 6 states have internal predecessors, (1146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:29:18,980 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:29:18,980 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:29:18,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-16 12:29:18,981 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-16 12:29:18,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:29:18,981 INFO L85 PathProgramCache]: Analyzing trace with hash 1147544435, now seen corresponding path program 1 times [2022-11-16 12:29:18,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:29:18,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342728356] [2022-11-16 12:29:18,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:29:18,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:29:19,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:29:19,016 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 12:29:19,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:29:19,057 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 12:29:19,057 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-16 12:29:19,058 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 21 remaining) [2022-11-16 12:29:19,058 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 21 remaining) [2022-11-16 12:29:19,059 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 21 remaining) [2022-11-16 12:29:19,059 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 21 remaining) [2022-11-16 12:29:19,059 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 21 remaining) [2022-11-16 12:29:19,059 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 21 remaining) [2022-11-16 12:29:19,060 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 21 remaining) [2022-11-16 12:29:19,060 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 21 remaining) [2022-11-16 12:29:19,060 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 21 remaining) [2022-11-16 12:29:19,061 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 21 remaining) [2022-11-16 12:29:19,061 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 21 remaining) [2022-11-16 12:29:19,061 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 21 remaining) [2022-11-16 12:29:19,061 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 21 remaining) [2022-11-16 12:29:19,062 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 21 remaining) [2022-11-16 12:29:19,062 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 21 remaining) [2022-11-16 12:29:19,062 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 21 remaining) [2022-11-16 12:29:19,063 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 21 remaining) [2022-11-16 12:29:19,063 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 21 remaining) [2022-11-16 12:29:19,063 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 21 remaining) [2022-11-16 12:29:19,063 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 21 remaining) [2022-11-16 12:29:19,064 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 21 remaining) [2022-11-16 12:29:19,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-16 12:29:19,064 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-11-16 12:29:19,065 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-16 12:29:19,065 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2022-11-16 12:29:19,135 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-16 12:29:19,140 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 267 places, 282 transitions, 609 flow [2022-11-16 12:29:19,255 INFO L130 PetriNetUnfolder]: 31/345 cut-off events. [2022-11-16 12:29:19,256 INFO L131 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2022-11-16 12:29:19,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 376 conditions, 345 events. 31/345 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1100 event pairs, 0 based on Foata normal form. 0/288 useless extension candidates. Maximal degree in co-relation 296. Up to 12 conditions per place. [2022-11-16 12:29:19,260 INFO L82 GeneralOperation]: Start removeDead. Operand has 267 places, 282 transitions, 609 flow [2022-11-16 12:29:19,265 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 267 places, 282 transitions, 609 flow [2022-11-16 12:29:19,267 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:29:19,267 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;@770106d2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:29:19,268 INFO L358 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2022-11-16 12:29:19,277 INFO L130 PetriNetUnfolder]: 6/102 cut-off events. [2022-11-16 12:29:19,277 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-16 12:29:19,278 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:29:19,278 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] [2022-11-16 12:29:19,278 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-16 12:29:19,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:29:19,279 INFO L85 PathProgramCache]: Analyzing trace with hash 1928765392, now seen corresponding path program 1 times [2022-11-16 12:29:19,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:29:19,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820644544] [2022-11-16 12:29:19,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:29:19,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:29:19,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:29:19,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:29:19,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:29:19,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820644544] [2022-11-16 12:29:19,588 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820644544] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:29:19,588 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:29:19,588 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 12:29:19,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804792156] [2022-11-16 12:29:19,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:29:19,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:29:19,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:29:19,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:29:19,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:29:19,593 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 229 out of 282 [2022-11-16 12:29:19,595 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 282 transitions, 609 flow. Second operand has 7 states, 7 states have (on average 230.57142857142858) internal successors, (1614), 7 states have internal predecessors, (1614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:29:19,596 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:29:19,596 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 229 of 282 [2022-11-16 12:29:19,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:29:25,401 INFO L130 PetriNetUnfolder]: 8592/21722 cut-off events. [2022-11-16 12:29:25,401 INFO L131 PetriNetUnfolder]: For 9819/9819 co-relation queries the response was YES. [2022-11-16 12:29:25,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36154 conditions, 21722 events. 8592/21722 cut-off events. For 9819/9819 co-relation queries the response was YES. Maximal size of possible extension queue 750. Compared 231044 event pairs, 1432 based on Foata normal form. 12163/30377 useless extension candidates. Maximal degree in co-relation 18478. Up to 5283 conditions per place. [2022-11-16 12:29:25,955 INFO L137 encePairwiseOnDemand]: 259/282 looper letters, 85 selfloop transitions, 5 changer transitions 0/314 dead transitions. [2022-11-16 12:29:25,955 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 314 transitions, 1013 flow [2022-11-16 12:29:25,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:29:25,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 12:29:25,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1781 transitions. [2022-11-16 12:29:25,962 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9022289766970618 [2022-11-16 12:29:25,963 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1781 transitions. [2022-11-16 12:29:25,963 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1781 transitions. [2022-11-16 12:29:25,964 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:29:25,965 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1781 transitions. [2022-11-16 12:29:25,971 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 254.42857142857142) internal successors, (1781), 7 states have internal predecessors, (1781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:29:25,977 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 282.0) internal successors, (2256), 8 states have internal predecessors, (2256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:29:25,978 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 282.0) internal successors, (2256), 8 states have internal predecessors, (2256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:29:25,979 INFO L175 Difference]: Start difference. First operand has 267 places, 282 transitions, 609 flow. Second operand 7 states and 1781 transitions. [2022-11-16 12:29:25,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 314 transitions, 1013 flow [2022-11-16 12:29:25,986 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 314 transitions, 933 flow, removed 40 selfloop flow, removed 0 redundant places. [2022-11-16 12:29:25,991 INFO L231 Difference]: Finished difference. Result has 261 places, 254 transitions, 543 flow [2022-11-16 12:29:25,992 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=282, PETRI_DIFFERENCE_MINUEND_FLOW=533, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=543, PETRI_PLACES=261, PETRI_TRANSITIONS=254} [2022-11-16 12:29:25,993 INFO L288 CegarLoopForPetriNet]: 267 programPoint places, -6 predicate places. [2022-11-16 12:29:25,993 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 254 transitions, 543 flow [2022-11-16 12:29:25,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 230.57142857142858) internal successors, (1614), 7 states have internal predecessors, (1614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:29:25,995 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:29:25,995 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] [2022-11-16 12:29:25,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-16 12:29:25,995 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-16 12:29:25,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:29:25,996 INFO L85 PathProgramCache]: Analyzing trace with hash -337813805, now seen corresponding path program 1 times [2022-11-16 12:29:25,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:29:25,997 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020864517] [2022-11-16 12:29:25,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:29:25,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:29:26,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:29:26,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:29:26,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:29:26,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020864517] [2022-11-16 12:29:26,104 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020864517] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:29:26,105 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:29:26,105 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:29:26,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073171353] [2022-11-16 12:29:26,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:29:26,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:29:26,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:29:26,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:29:26,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:29:26,109 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 282 [2022-11-16 12:29:26,113 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 254 transitions, 543 flow. Second operand has 6 states, 6 states have (on average 232.83333333333334) internal successors, (1397), 6 states have internal predecessors, (1397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:29:26,113 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:29:26,113 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 282 [2022-11-16 12:29:26,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:29:30,080 INFO L130 PetriNetUnfolder]: 5222/15697 cut-off events. [2022-11-16 12:29:30,081 INFO L131 PetriNetUnfolder]: For 2043/2043 co-relation queries the response was YES. [2022-11-16 12:29:30,214 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24748 conditions, 15697 events. 5222/15697 cut-off events. For 2043/2043 co-relation queries the response was YES. Maximal size of possible extension queue 609. Compared 175442 event pairs, 612 based on Foata normal form. 0/13588 useless extension candidates. Maximal degree in co-relation 18613. Up to 3560 conditions per place. [2022-11-16 12:29:30,503 INFO L137 encePairwiseOnDemand]: 276/282 looper letters, 82 selfloop transitions, 5 changer transitions 0/313 dead transitions. [2022-11-16 12:29:30,503 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 313 transitions, 935 flow [2022-11-16 12:29:30,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:29:30,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 12:29:30,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1705 transitions. [2022-11-16 12:29:30,509 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8637284701114488 [2022-11-16 12:29:30,509 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1705 transitions. [2022-11-16 12:29:30,510 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1705 transitions. [2022-11-16 12:29:30,511 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:29:30,511 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1705 transitions. [2022-11-16 12:29:30,517 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 243.57142857142858) internal successors, (1705), 7 states have internal predecessors, (1705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:29:30,522 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 282.0) internal successors, (2256), 8 states have internal predecessors, (2256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:29:30,523 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 282.0) internal successors, (2256), 8 states have internal predecessors, (2256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:29:30,523 INFO L175 Difference]: Start difference. First operand has 261 places, 254 transitions, 543 flow. Second operand 7 states and 1705 transitions. [2022-11-16 12:29:30,524 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 313 transitions, 935 flow [2022-11-16 12:29:30,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 313 transitions, 926 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-16 12:29:30,541 INFO L231 Difference]: Finished difference. Result has 261 places, 253 transitions, 542 flow [2022-11-16 12:29:30,542 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=282, PETRI_DIFFERENCE_MINUEND_FLOW=532, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=542, PETRI_PLACES=261, PETRI_TRANSITIONS=253} [2022-11-16 12:29:30,543 INFO L288 CegarLoopForPetriNet]: 267 programPoint places, -6 predicate places. [2022-11-16 12:29:30,543 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 253 transitions, 542 flow [2022-11-16 12:29:30,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 232.83333333333334) internal successors, (1397), 6 states have internal predecessors, (1397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:29:30,544 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:29:30,545 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:29:30,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-16 12:29:30,545 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-16 12:29:30,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:29:30,546 INFO L85 PathProgramCache]: Analyzing trace with hash -1652112749, now seen corresponding path program 1 times [2022-11-16 12:29:30,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:29:30,546 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872459575] [2022-11-16 12:29:30,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:29:30,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:29:30,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:29:30,750 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-16 12:29:30,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:29:30,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872459575] [2022-11-16 12:29:30,751 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872459575] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:29:30,751 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:29:30,751 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 12:29:30,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766528269] [2022-11-16 12:29:30,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:29:30,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:29:30,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:29:30,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:29:30,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:29:30,756 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 229 out of 282 [2022-11-16 12:29:30,758 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 253 transitions, 542 flow. Second operand has 7 states, 7 states have (on average 230.71428571428572) internal successors, (1615), 7 states have internal predecessors, (1615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:29:30,758 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:29:30,758 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 229 of 282 [2022-11-16 12:29:30,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:29:34,382 INFO L130 PetriNetUnfolder]: 6077/14020 cut-off events. [2022-11-16 12:29:34,382 INFO L131 PetriNetUnfolder]: For 2116/2116 co-relation queries the response was YES. [2022-11-16 12:29:34,510 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24062 conditions, 14020 events. 6077/14020 cut-off events. For 2116/2116 co-relation queries the response was YES. Maximal size of possible extension queue 680. Compared 143464 event pairs, 529 based on Foata normal form. 0/12009 useless extension candidates. Maximal degree in co-relation 24002. Up to 3987 conditions per place. [2022-11-16 12:29:34,638 INFO L137 encePairwiseOnDemand]: 276/282 looper letters, 80 selfloop transitions, 5 changer transitions 0/307 dead transitions. [2022-11-16 12:29:34,638 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 307 transitions, 895 flow [2022-11-16 12:29:34,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:29:34,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 12:29:34,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1689 transitions. [2022-11-16 12:29:34,642 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8556231003039514 [2022-11-16 12:29:34,643 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1689 transitions. [2022-11-16 12:29:34,643 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1689 transitions. [2022-11-16 12:29:34,644 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:29:34,645 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1689 transitions. [2022-11-16 12:29:34,650 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 241.28571428571428) internal successors, (1689), 7 states have internal predecessors, (1689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:29:34,655 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 282.0) internal successors, (2256), 8 states have internal predecessors, (2256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:29:34,656 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 282.0) internal successors, (2256), 8 states have internal predecessors, (2256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:29:34,656 INFO L175 Difference]: Start difference. First operand has 261 places, 253 transitions, 542 flow. Second operand 7 states and 1689 transitions. [2022-11-16 12:29:34,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 307 transitions, 895 flow [2022-11-16 12:29:34,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 307 transitions, 886 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-16 12:29:34,664 INFO L231 Difference]: Finished difference. Result has 261 places, 252 transitions, 541 flow [2022-11-16 12:29:34,664 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=282, PETRI_DIFFERENCE_MINUEND_FLOW=531, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=541, PETRI_PLACES=261, PETRI_TRANSITIONS=252} [2022-11-16 12:29:34,665 INFO L288 CegarLoopForPetriNet]: 267 programPoint places, -6 predicate places. [2022-11-16 12:29:34,666 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 252 transitions, 541 flow [2022-11-16 12:29:34,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 230.71428571428572) internal successors, (1615), 7 states have internal predecessors, (1615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:29:34,667 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:29:34,668 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:29:34,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-16 12:29:34,668 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-16 12:29:34,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:29:34,669 INFO L85 PathProgramCache]: Analyzing trace with hash 324113472, now seen corresponding path program 1 times [2022-11-16 12:29:34,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:29:34,669 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275490741] [2022-11-16 12:29:34,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:29:34,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:29:34,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:29:34,766 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-16 12:29:34,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:29:34,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275490741] [2022-11-16 12:29:34,767 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275490741] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:29:34,767 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:29:34,767 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:29:34,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709735835] [2022-11-16 12:29:34,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:29:34,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:29:34,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:29:34,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:29:34,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:29:34,771 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 282 [2022-11-16 12:29:34,773 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 252 transitions, 541 flow. Second operand has 6 states, 6 states have (on average 233.0) internal successors, (1398), 6 states have internal predecessors, (1398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:29:34,774 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:29:34,774 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 282 [2022-11-16 12:29:34,774 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:29:40,853 INFO L130 PetriNetUnfolder]: 6922/26478 cut-off events. [2022-11-16 12:29:40,854 INFO L131 PetriNetUnfolder]: For 2005/2005 co-relation queries the response was YES. [2022-11-16 12:29:41,182 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36679 conditions, 26478 events. 6922/26478 cut-off events. For 2005/2005 co-relation queries the response was YES. Maximal size of possible extension queue 770. Compared 329801 event pairs, 3297 based on Foata normal form. 0/21943 useless extension candidates. Maximal degree in co-relation 36623. Up to 4680 conditions per place. [2022-11-16 12:29:41,392 INFO L137 encePairwiseOnDemand]: 276/282 looper letters, 77 selfloop transitions, 5 changer transitions 0/306 dead transitions. [2022-11-16 12:29:41,393 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 306 transitions, 888 flow [2022-11-16 12:29:41,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:29:41,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 12:29:41,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1700 transitions. [2022-11-16 12:29:41,398 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8611955420466059 [2022-11-16 12:29:41,398 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1700 transitions. [2022-11-16 12:29:41,398 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1700 transitions. [2022-11-16 12:29:41,400 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:29:41,401 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1700 transitions. [2022-11-16 12:29:41,405 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 242.85714285714286) internal successors, (1700), 7 states have internal predecessors, (1700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:29:41,648 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 282.0) internal successors, (2256), 8 states have internal predecessors, (2256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:29:41,649 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 282.0) internal successors, (2256), 8 states have internal predecessors, (2256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:29:41,649 INFO L175 Difference]: Start difference. First operand has 261 places, 252 transitions, 541 flow. Second operand 7 states and 1700 transitions. [2022-11-16 12:29:41,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 306 transitions, 888 flow [2022-11-16 12:29:41,668 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 306 transitions, 879 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-16 12:29:41,671 INFO L231 Difference]: Finished difference. Result has 261 places, 251 transitions, 540 flow [2022-11-16 12:29:41,671 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=282, PETRI_DIFFERENCE_MINUEND_FLOW=530, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=540, PETRI_PLACES=261, PETRI_TRANSITIONS=251} [2022-11-16 12:29:41,672 INFO L288 CegarLoopForPetriNet]: 267 programPoint places, -6 predicate places. [2022-11-16 12:29:41,672 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 251 transitions, 540 flow [2022-11-16 12:29:41,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 233.0) internal successors, (1398), 6 states have internal predecessors, (1398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:29:41,673 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:29:41,673 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] [2022-11-16 12:29:41,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-16 12:29:41,674 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-16 12:29:41,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:29:41,674 INFO L85 PathProgramCache]: Analyzing trace with hash -977043747, now seen corresponding path program 1 times [2022-11-16 12:29:41,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:29:41,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762258967] [2022-11-16 12:29:41,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:29:41,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:29:41,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:29:41,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:29:41,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:29:41,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762258967] [2022-11-16 12:29:41,760 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762258967] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:29:41,761 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:29:41,761 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 12:29:41,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92504904] [2022-11-16 12:29:41,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:29:41,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:29:41,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:29:41,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:29:41,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:29:41,765 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 227 out of 282 [2022-11-16 12:29:41,766 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 251 transitions, 540 flow. Second operand has 5 states, 5 states have (on average 229.6) internal successors, (1148), 5 states have internal predecessors, (1148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:29:41,767 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:29:41,767 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 227 of 282 [2022-11-16 12:29:41,767 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:29:47,691 INFO L130 PetriNetUnfolder]: 10303/23767 cut-off events. [2022-11-16 12:29:47,691 INFO L131 PetriNetUnfolder]: For 3601/3601 co-relation queries the response was YES. [2022-11-16 12:29:48,276 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41108 conditions, 23767 events. 10303/23767 cut-off events. For 3601/3601 co-relation queries the response was YES. Maximal size of possible extension queue 1034. Compared 258807 event pairs, 5388 based on Foata normal form. 0/20275 useless extension candidates. Maximal degree in co-relation 37839. Up to 7567 conditions per place. [2022-11-16 12:29:48,491 INFO L137 encePairwiseOnDemand]: 274/282 looper letters, 85 selfloop transitions, 6 changer transitions 0/311 dead transitions. [2022-11-16 12:29:48,491 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 311 transitions, 922 flow [2022-11-16 12:29:48,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:29:48,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-16 12:29:48,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1455 transitions. [2022-11-16 12:29:48,496 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8599290780141844 [2022-11-16 12:29:48,496 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1455 transitions. [2022-11-16 12:29:48,496 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1455 transitions. [2022-11-16 12:29:48,498 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:29:48,498 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1455 transitions. [2022-11-16 12:29:48,501 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 242.5) internal successors, (1455), 6 states have internal predecessors, (1455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:29:48,505 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 282.0) internal successors, (1974), 7 states have internal predecessors, (1974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:29:48,506 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 282.0) internal successors, (1974), 7 states have internal predecessors, (1974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:29:48,506 INFO L175 Difference]: Start difference. First operand has 261 places, 251 transitions, 540 flow. Second operand 6 states and 1455 transitions. [2022-11-16 12:29:48,507 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 311 transitions, 922 flow [2022-11-16 12:29:48,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 311 transitions, 913 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-16 12:29:48,515 INFO L231 Difference]: Finished difference. Result has 266 places, 256 transitions, 579 flow [2022-11-16 12:29:48,516 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=282, PETRI_DIFFERENCE_MINUEND_FLOW=531, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=579, PETRI_PLACES=266, PETRI_TRANSITIONS=256} [2022-11-16 12:29:48,516 INFO L288 CegarLoopForPetriNet]: 267 programPoint places, -1 predicate places. [2022-11-16 12:29:48,517 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 256 transitions, 579 flow [2022-11-16 12:29:48,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 229.6) internal successors, (1148), 5 states have internal predecessors, (1148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:29:48,517 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:29:48,518 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] [2022-11-16 12:29:48,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-16 12:29:48,518 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-16 12:29:48,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:29:48,519 INFO L85 PathProgramCache]: Analyzing trace with hash -223583876, now seen corresponding path program 1 times [2022-11-16 12:29:48,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:29:48,519 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379305486] [2022-11-16 12:29:48,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:29:48,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:29:48,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:29:48,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:29:48,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:29:48,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379305486] [2022-11-16 12:29:48,661 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379305486] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:29:48,661 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:29:48,661 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:29:48,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417146667] [2022-11-16 12:29:48,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:29:48,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 12:29:48,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:29:48,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 12:29:48,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:29:48,665 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 222 out of 282 [2022-11-16 12:29:48,667 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 256 transitions, 579 flow. Second operand has 8 states, 8 states have (on average 224.375) internal successors, (1795), 8 states have internal predecessors, (1795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:29:48,667 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:29:48,668 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 222 of 282 [2022-11-16 12:29:48,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:29:55,863 INFO L130 PetriNetUnfolder]: 15100/26230 cut-off events. [2022-11-16 12:29:55,863 INFO L131 PetriNetUnfolder]: For 5050/5050 co-relation queries the response was YES. [2022-11-16 12:29:56,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51073 conditions, 26230 events. 15100/26230 cut-off events. For 5050/5050 co-relation queries the response was YES. Maximal size of possible extension queue 1100. Compared 232232 event pairs, 656 based on Foata normal form. 242/24313 useless extension candidates. Maximal degree in co-relation 50750. Up to 8926 conditions per place. [2022-11-16 12:29:56,467 INFO L137 encePairwiseOnDemand]: 273/282 looper letters, 113 selfloop transitions, 10 changer transitions 0/338 dead transitions. [2022-11-16 12:29:56,467 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 338 transitions, 1123 flow [2022-11-16 12:29:56,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 12:29:56,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 12:29:56,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2118 transitions. [2022-11-16 12:29:56,473 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.83451536643026 [2022-11-16 12:29:56,473 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2118 transitions. [2022-11-16 12:29:56,473 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2118 transitions. [2022-11-16 12:29:56,475 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:29:56,475 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2118 transitions. [2022-11-16 12:29:56,481 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 235.33333333333334) internal successors, (2118), 9 states have internal predecessors, (2118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:29:56,486 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 282.0) internal successors, (2820), 10 states have internal predecessors, (2820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:29:56,487 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 282.0) internal successors, (2820), 10 states have internal predecessors, (2820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:29:56,488 INFO L175 Difference]: Start difference. First operand has 266 places, 256 transitions, 579 flow. Second operand 9 states and 2118 transitions. [2022-11-16 12:29:56,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 338 transitions, 1123 flow [2022-11-16 12:29:56,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 338 transitions, 1119 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 12:29:56,526 INFO L231 Difference]: Finished difference. Result has 271 places, 254 transitions, 585 flow [2022-11-16 12:29:56,527 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=282, PETRI_DIFFERENCE_MINUEND_FLOW=565, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=585, PETRI_PLACES=271, PETRI_TRANSITIONS=254} [2022-11-16 12:29:56,528 INFO L288 CegarLoopForPetriNet]: 267 programPoint places, 4 predicate places. [2022-11-16 12:29:56,528 INFO L495 AbstractCegarLoop]: Abstraction has has 271 places, 254 transitions, 585 flow [2022-11-16 12:29:56,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 224.375) internal successors, (1795), 8 states have internal predecessors, (1795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:29:56,529 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:29:56,529 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:29:56,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-16 12:29:56,530 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-16 12:29:56,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:29:56,530 INFO L85 PathProgramCache]: Analyzing trace with hash 905799217, now seen corresponding path program 1 times [2022-11-16 12:29:56,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:29:56,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280656666] [2022-11-16 12:29:56,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:29:56,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:29:56,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:29:56,693 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-11-16 12:29:56,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:29:56,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280656666] [2022-11-16 12:29:56,693 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280656666] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:29:56,694 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:29:56,694 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 12:29:56,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133439889] [2022-11-16 12:29:56,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:29:56,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:29:56,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:29:56,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:29:56,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:29:56,698 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 229 out of 282 [2022-11-16 12:29:56,700 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 254 transitions, 585 flow. Second operand has 7 states, 7 states have (on average 230.85714285714286) internal successors, (1616), 7 states have internal predecessors, (1616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:29:56,700 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:29:56,700 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 229 of 282 [2022-11-16 12:29:56,700 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:30:06,601 INFO L130 PetriNetUnfolder]: 13840/38696 cut-off events. [2022-11-16 12:30:06,601 INFO L131 PetriNetUnfolder]: For 3686/3686 co-relation queries the response was YES. [2022-11-16 12:30:07,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59156 conditions, 38696 events. 13840/38696 cut-off events. For 3686/3686 co-relation queries the response was YES. Maximal size of possible extension queue 1188. Compared 468295 event pairs, 3348 based on Foata normal form. 0/32402 useless extension candidates. Maximal degree in co-relation 59091. Up to 8289 conditions per place. [2022-11-16 12:30:07,817 INFO L137 encePairwiseOnDemand]: 276/282 looper letters, 75 selfloop transitions, 5 changer transitions 0/303 dead transitions. [2022-11-16 12:30:07,818 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 303 transitions, 893 flow [2022-11-16 12:30:07,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:30:07,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 12:30:07,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1684 transitions. [2022-11-16 12:30:07,823 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8530901722391084 [2022-11-16 12:30:07,823 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1684 transitions. [2022-11-16 12:30:07,823 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1684 transitions. [2022-11-16 12:30:07,824 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:30:07,825 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1684 transitions. [2022-11-16 12:30:07,829 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 240.57142857142858) internal successors, (1684), 7 states have internal predecessors, (1684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:30:07,833 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 282.0) internal successors, (2256), 8 states have internal predecessors, (2256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:30:07,834 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 282.0) internal successors, (2256), 8 states have internal predecessors, (2256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:30:07,834 INFO L175 Difference]: Start difference. First operand has 271 places, 254 transitions, 585 flow. Second operand 7 states and 1684 transitions. [2022-11-16 12:30:07,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 303 transitions, 893 flow [2022-11-16 12:30:07,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 303 transitions, 873 flow, removed 0 selfloop flow, removed 8 redundant places. [2022-11-16 12:30:07,849 INFO L231 Difference]: Finished difference. Result has 268 places, 253 transitions, 573 flow [2022-11-16 12:30:07,850 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=282, PETRI_DIFFERENCE_MINUEND_FLOW=563, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=573, PETRI_PLACES=268, PETRI_TRANSITIONS=253} [2022-11-16 12:30:07,851 INFO L288 CegarLoopForPetriNet]: 267 programPoint places, 1 predicate places. [2022-11-16 12:30:07,851 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 253 transitions, 573 flow [2022-11-16 12:30:07,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 230.85714285714286) internal successors, (1616), 7 states have internal predecessors, (1616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:30:07,852 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:30:07,852 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 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] [2022-11-16 12:30:07,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-16 12:30:07,853 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-16 12:30:07,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:30:07,853 INFO L85 PathProgramCache]: Analyzing trace with hash -1984994110, now seen corresponding path program 1 times [2022-11-16 12:30:07,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:30:07,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156735422] [2022-11-16 12:30:07,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:30:07,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:30:07,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:30:07,942 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-11-16 12:30:07,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:30:07,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156735422] [2022-11-16 12:30:07,943 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156735422] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:30:07,943 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:30:07,943 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:30:07,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684502900] [2022-11-16 12:30:07,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:30:07,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:30:07,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:30:07,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:30:07,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:30:07,947 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 282 [2022-11-16 12:30:07,948 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 253 transitions, 573 flow. Second operand has 6 states, 6 states have (on average 233.16666666666666) internal successors, (1399), 6 states have internal predecessors, (1399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:30:07,949 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:30:07,949 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 282 [2022-11-16 12:30:07,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand