./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_28-funptr_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 2329fc70 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_a59ebabb-e7ee-4055-9e21-d5168994612f/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a59ebabb-e7ee-4055-9e21-d5168994612f/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a59ebabb-e7ee-4055-9e21-d5168994612f/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a59ebabb-e7ee-4055-9e21-d5168994612f/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_28-funptr_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a59ebabb-e7ee-4055-9e21-d5168994612f/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a59ebabb-e7ee-4055-9e21-d5168994612f/bin/uautomizer-uyxdKDjOR8 --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 5b90ecb07ae966182b79ce4444e238e18068c02297f514a326dfeeed6dbb5499 --- 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-2329fc7 [2022-12-13 12:09:06,670 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 12:09:06,672 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 12:09:06,695 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 12:09:06,696 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 12:09:06,698 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 12:09:06,700 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 12:09:06,702 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 12:09:06,705 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 12:09:06,706 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 12:09:06,708 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 12:09:06,709 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 12:09:06,710 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 12:09:06,712 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 12:09:06,713 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 12:09:06,715 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 12:09:06,716 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 12:09:06,717 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 12:09:06,720 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 12:09:06,723 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 12:09:06,725 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 12:09:06,727 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 12:09:06,729 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 12:09:06,730 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 12:09:06,736 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 12:09:06,737 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 12:09:06,737 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 12:09:06,739 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 12:09:06,739 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 12:09:06,740 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 12:09:06,741 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 12:09:06,742 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 12:09:06,743 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 12:09:06,744 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 12:09:06,745 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 12:09:06,745 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 12:09:06,746 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 12:09:06,746 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 12:09:06,746 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 12:09:06,747 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 12:09:06,748 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 12:09:06,748 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a59ebabb-e7ee-4055-9e21-d5168994612f/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-12-13 12:09:06,772 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 12:09:06,772 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 12:09:06,773 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 12:09:06,773 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 12:09:06,773 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 12:09:06,774 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 12:09:06,774 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 12:09:06,775 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 12:09:06,775 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 12:09:06,775 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 12:09:06,775 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 12:09:06,775 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 12:09:06,776 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 12:09:06,776 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 12:09:06,776 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 12:09:06,776 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 12:09:06,776 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 12:09:06,777 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 12:09:06,777 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-13 12:09:06,777 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 12:09:06,777 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 12:09:06,777 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 12:09:06,777 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 12:09:06,778 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 12:09:06,778 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 12:09:06,778 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 12:09:06,778 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 12:09:06,779 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 12:09:06,779 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 12:09:06,779 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 12:09:06,779 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 12:09:06,779 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 12:09:06,779 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 12:09:06,780 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 12:09:06,780 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 12:09:06,780 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 12:09:06,780 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 12:09:06,780 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_a59ebabb-e7ee-4055-9e21-d5168994612f/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a59ebabb-e7ee-4055-9e21-d5168994612f/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5b90ecb07ae966182b79ce4444e238e18068c02297f514a326dfeeed6dbb5499 [2022-12-13 12:09:06,944 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 12:09:06,963 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 12:09:06,965 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 12:09:06,966 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 12:09:06,966 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 12:09:06,967 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a59ebabb-e7ee-4055-9e21-d5168994612f/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/goblint-regression/28-race_reach_28-funptr_racefree.i [2022-12-13 12:09:09,627 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 12:09:09,832 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 12:09:09,833 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a59ebabb-e7ee-4055-9e21-d5168994612f/sv-benchmarks/c/goblint-regression/28-race_reach_28-funptr_racefree.i [2022-12-13 12:09:09,842 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a59ebabb-e7ee-4055-9e21-d5168994612f/bin/uautomizer-uyxdKDjOR8/data/f3d9117fa/ebad160adfa04b63b45772472a73fccf/FLAG4654fc47e [2022-12-13 12:09:09,853 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a59ebabb-e7ee-4055-9e21-d5168994612f/bin/uautomizer-uyxdKDjOR8/data/f3d9117fa/ebad160adfa04b63b45772472a73fccf [2022-12-13 12:09:09,855 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 12:09:09,856 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 12:09:09,857 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 12:09:09,857 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 12:09:09,860 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 12:09:09,861 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 12:09:09" (1/1) ... [2022-12-13 12:09:09,861 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a47651e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:09:09, skipping insertion in model container [2022-12-13 12:09:09,861 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 12:09:09" (1/1) ... [2022-12-13 12:09:09,867 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 12:09:09,897 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 12:09:10,163 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a59ebabb-e7ee-4055-9e21-d5168994612f/sv-benchmarks/c/goblint-regression/28-race_reach_28-funptr_racefree.i[41323,41336] [2022-12-13 12:09:10,180 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 12:09:10,191 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 12:09:10,215 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a59ebabb-e7ee-4055-9e21-d5168994612f/sv-benchmarks/c/goblint-regression/28-race_reach_28-funptr_racefree.i[41323,41336] [2022-12-13 12:09:10,222 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 12:09:10,257 INFO L208 MainTranslator]: Completed translation [2022-12-13 12:09:10,257 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:09:10 WrapperNode [2022-12-13 12:09:10,257 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 12:09:10,258 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 12:09:10,258 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 12:09:10,258 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 12:09:10,264 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:09:10" (1/1) ... [2022-12-13 12:09:10,275 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:09:10" (1/1) ... [2022-12-13 12:09:10,291 INFO L138 Inliner]: procedures = 273, calls = 42, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 130 [2022-12-13 12:09:10,291 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 12:09:10,292 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 12:09:10,292 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 12:09:10,292 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 12:09:10,299 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:09:10" (1/1) ... [2022-12-13 12:09:10,299 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:09:10" (1/1) ... [2022-12-13 12:09:10,302 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:09:10" (1/1) ... [2022-12-13 12:09:10,302 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:09:10" (1/1) ... [2022-12-13 12:09:10,306 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:09:10" (1/1) ... [2022-12-13 12:09:10,309 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:09:10" (1/1) ... [2022-12-13 12:09:10,310 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:09:10" (1/1) ... [2022-12-13 12:09:10,311 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:09:10" (1/1) ... [2022-12-13 12:09:10,313 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 12:09:10,313 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 12:09:10,313 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 12:09:10,313 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 12:09:10,314 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:09:10" (1/1) ... [2022-12-13 12:09:10,319 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 12:09:10,328 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a59ebabb-e7ee-4055-9e21-d5168994612f/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:09:10,339 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a59ebabb-e7ee-4055-9e21-d5168994612f/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 12:09:10,341 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a59ebabb-e7ee-4055-9e21-d5168994612f/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 12:09:10,374 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 12:09:10,374 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 12:09:10,374 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 12:09:10,374 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 12:09:10,375 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-12-13 12:09:10,375 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 12:09:10,375 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-12-13 12:09:10,375 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-12-13 12:09:10,375 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 12:09:10,375 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 12:09:10,376 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 12:09:10,377 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-13 12:09:10,481 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 12:09:10,484 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 12:09:10,692 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 12:09:10,701 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 12:09:10,701 INFO L300 CfgBuilder]: Removed 10 assume(true) statements. [2022-12-13 12:09:10,704 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 12:09:10 BoogieIcfgContainer [2022-12-13 12:09:10,704 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 12:09:10,706 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 12:09:10,706 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 12:09:10,709 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 12:09:10,709 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 12:09:09" (1/3) ... [2022-12-13 12:09:10,710 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@371947f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 12:09:10, skipping insertion in model container [2022-12-13 12:09:10,710 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:09:10" (2/3) ... [2022-12-13 12:09:10,710 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@371947f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 12:09:10, skipping insertion in model container [2022-12-13 12:09:10,711 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 12:09:10" (3/3) ... [2022-12-13 12:09:10,712 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_28-funptr_racefree.i [2022-12-13 12:09:10,720 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 12:09:10,729 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 12:09:10,729 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-12-13 12:09:10,729 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 12:09:10,779 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-12-13 12:09:10,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 134 places, 143 transitions, 294 flow [2022-12-13 12:09:10,850 INFO L130 PetriNetUnfolder]: 17/182 cut-off events. [2022-12-13 12:09:10,850 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 12:09:10,856 INFO L83 FinitePrefix]: Finished finitePrefix Result has 188 conditions, 182 events. 17/182 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 433 event pairs, 0 based on Foata normal form. 0/154 useless extension candidates. Maximal degree in co-relation 95. Up to 4 conditions per place. [2022-12-13 12:09:10,857 INFO L82 GeneralOperation]: Start removeDead. Operand has 134 places, 143 transitions, 294 flow [2022-12-13 12:09:10,860 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 132 places, 140 transitions, 288 flow [2022-12-13 12:09:10,863 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 12:09:10,871 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 132 places, 140 transitions, 288 flow [2022-12-13 12:09:10,873 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 132 places, 140 transitions, 288 flow [2022-12-13 12:09:10,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 132 places, 140 transitions, 288 flow [2022-12-13 12:09:10,899 INFO L130 PetriNetUnfolder]: 16/179 cut-off events. [2022-12-13 12:09:10,899 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 12:09:10,900 INFO L83 FinitePrefix]: Finished finitePrefix Result has 185 conditions, 179 events. 16/179 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 431 event pairs, 0 based on Foata normal form. 0/152 useless extension candidates. Maximal degree in co-relation 95. Up to 4 conditions per place. [2022-12-13 12:09:10,902 INFO L119 LiptonReduction]: Number of co-enabled transitions 4606 [2022-12-13 12:09:13,516 INFO L134 LiptonReduction]: Checked pairs total: 8386 [2022-12-13 12:09:13,516 INFO L136 LiptonReduction]: Total number of compositions: 124 [2022-12-13 12:09:13,526 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 12:09:13,531 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;@72f9df8a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 12:09:13,531 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2022-12-13 12:09:13,533 INFO L130 PetriNetUnfolder]: 0/7 cut-off events. [2022-12-13 12:09:13,533 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 12:09:13,533 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:09:13,534 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-12-13 12:09:13,534 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-12-13 12:09:13,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:09:13,538 INFO L85 PathProgramCache]: Analyzing trace with hash 16683939, now seen corresponding path program 1 times [2022-12-13 12:09:13,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:09:13,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679572505] [2022-12-13 12:09:13,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:09:13,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:09:13,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:09:13,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:09:13,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:09:13,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679572505] [2022-12-13 12:09:13,727 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679572505] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:09:13,727 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:09:13,728 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 12:09:13,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775643306] [2022-12-13 12:09:13,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:09:13,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:09:13,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:09:13,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:09:13,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:09:13,775 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 267 [2022-12-13 12:09:13,777 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 44 transitions, 96 flow. Second operand has 3 states, 3 states have (on average 126.33333333333333) internal successors, (379), 3 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:09:13,777 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:09:13,777 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 267 [2022-12-13 12:09:13,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:09:13,878 INFO L130 PetriNetUnfolder]: 117/307 cut-off events. [2022-12-13 12:09:13,878 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 12:09:13,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 589 conditions, 307 events. 117/307 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1518 event pairs, 0 based on Foata normal form. 10/262 useless extension candidates. Maximal degree in co-relation 543. Up to 247 conditions per place. [2022-12-13 12:09:13,882 INFO L137 encePairwiseOnDemand]: 253/267 looper letters, 39 selfloop transitions, 2 changer transitions 0/47 dead transitions. [2022-12-13 12:09:13,882 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 47 transitions, 184 flow [2022-12-13 12:09:13,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:09:13,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:09:13,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 434 transitions. [2022-12-13 12:09:13,898 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5418227215980025 [2022-12-13 12:09:13,898 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 434 transitions. [2022-12-13 12:09:13,899 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 434 transitions. [2022-12-13 12:09:13,901 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:09:13,903 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 434 transitions. [2022-12-13 12:09:13,906 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 144.66666666666666) internal successors, (434), 3 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:09:13,911 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 267.0) internal successors, (1068), 4 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:09:13,911 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 267.0) internal successors, (1068), 4 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:09:13,913 INFO L175 Difference]: Start difference. First operand has 39 places, 44 transitions, 96 flow. Second operand 3 states and 434 transitions. [2022-12-13 12:09:13,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 47 transitions, 184 flow [2022-12-13 12:09:13,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 47 transitions, 184 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 12:09:13,917 INFO L231 Difference]: Finished difference. Result has 39 places, 33 transitions, 82 flow [2022-12-13 12:09:13,919 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=82, PETRI_PLACES=39, PETRI_TRANSITIONS=33} [2022-12-13 12:09:13,923 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, 0 predicate places. [2022-12-13 12:09:13,923 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 33 transitions, 82 flow [2022-12-13 12:09:13,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 126.33333333333333) internal successors, (379), 3 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:09:13,924 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:09:13,924 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2022-12-13 12:09:13,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 12:09:13,925 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-12-13 12:09:13,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:09:13,925 INFO L85 PathProgramCache]: Analyzing trace with hash -1146560545, now seen corresponding path program 1 times [2022-12-13 12:09:13,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:09:13,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538346439] [2022-12-13 12:09:13,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:09:13,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:09:13,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 12:09:13,960 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 12:09:13,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 12:09:14,002 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 12:09:14,003 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 12:09:14,004 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2022-12-13 12:09:14,006 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2022-12-13 12:09:14,007 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2022-12-13 12:09:14,007 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2022-12-13 12:09:14,007 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 13 remaining) [2022-12-13 12:09:14,007 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 13 remaining) [2022-12-13 12:09:14,007 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 13 remaining) [2022-12-13 12:09:14,008 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 13 remaining) [2022-12-13 12:09:14,008 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 13 remaining) [2022-12-13 12:09:14,008 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 13 remaining) [2022-12-13 12:09:14,008 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2022-12-13 12:09:14,009 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2022-12-13 12:09:14,009 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2022-12-13 12:09:14,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 12:09:14,009 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2022-12-13 12:09:14,012 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-13 12:09:14,012 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-12-13 12:09:14,038 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-13 12:09:14,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 178 places, 192 transitions, 402 flow [2022-12-13 12:09:14,082 INFO L130 PetriNetUnfolder]: 31/307 cut-off events. [2022-12-13 12:09:14,082 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-12-13 12:09:14,084 INFO L83 FinitePrefix]: Finished finitePrefix Result has 321 conditions, 307 events. 31/307 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 963 event pairs, 0 based on Foata normal form. 0/254 useless extension candidates. Maximal degree in co-relation 184. Up to 8 conditions per place. [2022-12-13 12:09:14,084 INFO L82 GeneralOperation]: Start removeDead. Operand has 178 places, 192 transitions, 402 flow [2022-12-13 12:09:14,087 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 178 places, 192 transitions, 402 flow [2022-12-13 12:09:14,087 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 12:09:14,087 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 178 places, 192 transitions, 402 flow [2022-12-13 12:09:14,087 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 178 places, 192 transitions, 402 flow [2022-12-13 12:09:14,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 178 places, 192 transitions, 402 flow [2022-12-13 12:09:14,127 INFO L130 PetriNetUnfolder]: 31/307 cut-off events. [2022-12-13 12:09:14,127 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-12-13 12:09:14,129 INFO L83 FinitePrefix]: Finished finitePrefix Result has 321 conditions, 307 events. 31/307 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 963 event pairs, 0 based on Foata normal form. 0/254 useless extension candidates. Maximal degree in co-relation 184. Up to 8 conditions per place. [2022-12-13 12:09:14,138 INFO L119 LiptonReduction]: Number of co-enabled transitions 15416 [2022-12-13 12:09:16,906 INFO L134 LiptonReduction]: Checked pairs total: 36944 [2022-12-13 12:09:16,906 INFO L136 LiptonReduction]: Total number of compositions: 152 [2022-12-13 12:09:16,908 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 12:09:16,908 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;@72f9df8a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 12:09:16,908 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2022-12-13 12:09:16,910 INFO L130 PetriNetUnfolder]: 0/9 cut-off events. [2022-12-13 12:09:16,910 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 12:09:16,910 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:09:16,910 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 12:09:16,911 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-12-13 12:09:16,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:09:16,911 INFO L85 PathProgramCache]: Analyzing trace with hash 892238053, now seen corresponding path program 1 times [2022-12-13 12:09:16,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:09:16,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769598321] [2022-12-13 12:09:16,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:09:16,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:09:16,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:09:16,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:09:16,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:09:16,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769598321] [2022-12-13 12:09:16,955 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769598321] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:09:16,955 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:09:16,955 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 12:09:16,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033250736] [2022-12-13 12:09:16,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:09:16,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:09:16,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:09:16,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:09:16,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:09:16,965 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 166 out of 344 [2022-12-13 12:09:16,966 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 75 transitions, 168 flow. Second operand has 3 states, 3 states have (on average 167.33333333333334) internal successors, (502), 3 states have internal predecessors, (502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:09:16,966 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:09:16,966 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 166 of 344 [2022-12-13 12:09:16,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:09:17,945 INFO L130 PetriNetUnfolder]: 8133/13048 cut-off events. [2022-12-13 12:09:17,945 INFO L131 PetriNetUnfolder]: For 89/89 co-relation queries the response was YES. [2022-12-13 12:09:17,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25964 conditions, 13048 events. 8133/13048 cut-off events. For 89/89 co-relation queries the response was YES. Maximal size of possible extension queue 366. Compared 84572 event pairs, 3859 based on Foata normal form. 511/10132 useless extension candidates. Maximal degree in co-relation 2495. Up to 12770 conditions per place. [2022-12-13 12:09:18,038 INFO L137 encePairwiseOnDemand]: 325/344 looper letters, 70 selfloop transitions, 2 changer transitions 0/79 dead transitions. [2022-12-13 12:09:18,039 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 79 transitions, 320 flow [2022-12-13 12:09:18,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:09:18,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:09:18,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 593 transitions. [2022-12-13 12:09:18,043 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5746124031007752 [2022-12-13 12:09:18,043 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 593 transitions. [2022-12-13 12:09:18,043 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 593 transitions. [2022-12-13 12:09:18,044 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:09:18,044 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 593 transitions. [2022-12-13 12:09:18,045 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 197.66666666666666) internal successors, (593), 3 states have internal predecessors, (593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:09:18,046 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 344.0) internal successors, (1376), 4 states have internal predecessors, (1376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:09:18,047 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 344.0) internal successors, (1376), 4 states have internal predecessors, (1376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:09:18,047 INFO L175 Difference]: Start difference. First operand has 64 places, 75 transitions, 168 flow. Second operand 3 states and 593 transitions. [2022-12-13 12:09:18,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 79 transitions, 320 flow [2022-12-13 12:09:18,048 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 79 transitions, 320 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 12:09:18,049 INFO L231 Difference]: Finished difference. Result has 67 places, 62 transitions, 156 flow [2022-12-13 12:09:18,049 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=344, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=156, PETRI_PLACES=67, PETRI_TRANSITIONS=62} [2022-12-13 12:09:18,049 INFO L288 CegarLoopForPetriNet]: 64 programPoint places, 3 predicate places. [2022-12-13 12:09:18,050 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 62 transitions, 156 flow [2022-12-13 12:09:18,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 167.33333333333334) internal successors, (502), 3 states have internal predecessors, (502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:09:18,050 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:09:18,050 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-12-13 12:09:18,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 12:09:18,051 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-12-13 12:09:18,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:09:18,051 INFO L85 PathProgramCache]: Analyzing trace with hash -1712313072, now seen corresponding path program 1 times [2022-12-13 12:09:18,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:09:18,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953466621] [2022-12-13 12:09:18,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:09:18,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:09:18,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:09:18,098 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:09:18,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:09:18,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953466621] [2022-12-13 12:09:18,099 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953466621] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:09:18,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1356962366] [2022-12-13 12:09:18,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:09:18,100 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:09:18,100 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a59ebabb-e7ee-4055-9e21-d5168994612f/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:09:18,102 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a59ebabb-e7ee-4055-9e21-d5168994612f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:09:18,103 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a59ebabb-e7ee-4055-9e21-d5168994612f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 12:09:18,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:09:18,174 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 12:09:18,176 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:09:18,212 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:09:18,212 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 12:09:18,212 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1356962366] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:09:18,213 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 12:09:18,213 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2022-12-13 12:09:18,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234316888] [2022-12-13 12:09:18,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:09:18,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 12:09:18,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:09:18,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 12:09:18,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 12:09:18,226 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 166 out of 344 [2022-12-13 12:09:18,226 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 62 transitions, 156 flow. Second operand has 4 states, 4 states have (on average 167.75) internal successors, (671), 4 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:09:18,227 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:09:18,227 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 166 of 344 [2022-12-13 12:09:18,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:09:19,187 INFO L130 PetriNetUnfolder]: 7556/12165 cut-off events. [2022-12-13 12:09:19,187 INFO L131 PetriNetUnfolder]: For 707/707 co-relation queries the response was YES. [2022-12-13 12:09:19,195 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25170 conditions, 12165 events. 7556/12165 cut-off events. For 707/707 co-relation queries the response was YES. Maximal size of possible extension queue 329. Compared 77531 event pairs, 3570 based on Foata normal form. 0/9524 useless extension candidates. Maximal degree in co-relation 2467. Up to 11886 conditions per place. [2022-12-13 12:09:19,227 INFO L137 encePairwiseOnDemand]: 341/344 looper letters, 69 selfloop transitions, 2 changer transitions 0/78 dead transitions. [2022-12-13 12:09:19,227 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 78 transitions, 328 flow [2022-12-13 12:09:19,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 12:09:19,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 12:09:19,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 736 transitions. [2022-12-13 12:09:19,229 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5348837209302325 [2022-12-13 12:09:19,229 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 736 transitions. [2022-12-13 12:09:19,229 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 736 transitions. [2022-12-13 12:09:19,229 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:09:19,229 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 736 transitions. [2022-12-13 12:09:19,231 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 184.0) internal successors, (736), 4 states have internal predecessors, (736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:09:19,232 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 344.0) internal successors, (1720), 5 states have internal predecessors, (1720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:09:19,233 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 344.0) internal successors, (1720), 5 states have internal predecessors, (1720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:09:19,233 INFO L175 Difference]: Start difference. First operand has 67 places, 62 transitions, 156 flow. Second operand 4 states and 736 transitions. [2022-12-13 12:09:19,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 78 transitions, 328 flow [2022-12-13 12:09:19,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 78 transitions, 326 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 12:09:19,234 INFO L231 Difference]: Finished difference. Result has 68 places, 61 transitions, 154 flow [2022-12-13 12:09:19,234 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=344, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=154, PETRI_PLACES=68, PETRI_TRANSITIONS=61} [2022-12-13 12:09:19,235 INFO L288 CegarLoopForPetriNet]: 64 programPoint places, 4 predicate places. [2022-12-13 12:09:19,235 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 61 transitions, 154 flow [2022-12-13 12:09:19,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 167.75) internal successors, (671), 4 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:09:19,235 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:09:19,235 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-12-13 12:09:19,241 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a59ebabb-e7ee-4055-9e21-d5168994612f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 12:09:19,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a59ebabb-e7ee-4055-9e21-d5168994612f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:09:19,437 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-12-13 12:09:19,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:09:19,437 INFO L85 PathProgramCache]: Analyzing trace with hash -1712313048, now seen corresponding path program 1 times [2022-12-13 12:09:19,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:09:19,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8128917] [2022-12-13 12:09:19,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:09:19,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:09:19,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:09:19,475 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 12:09:19,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:09:19,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8128917] [2022-12-13 12:09:19,476 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8128917] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:09:19,476 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:09:19,476 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 12:09:19,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843483924] [2022-12-13 12:09:19,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:09:19,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:09:19,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:09:19,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:09:19,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:09:19,485 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 344 [2022-12-13 12:09:19,486 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 61 transitions, 154 flow. Second operand has 3 states, 3 states have (on average 167.33333333333334) internal successors, (502), 3 states have internal predecessors, (502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:09:19,486 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:09:19,486 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 344 [2022-12-13 12:09:19,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:09:20,181 INFO L130 PetriNetUnfolder]: 6979/11424 cut-off events. [2022-12-13 12:09:20,181 INFO L131 PetriNetUnfolder]: For 447/447 co-relation queries the response was YES. [2022-12-13 12:09:20,190 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23215 conditions, 11424 events. 6979/11424 cut-off events. For 447/447 co-relation queries the response was YES. Maximal size of possible extension queue 300. Compared 75145 event pairs, 881 based on Foata normal form. 0/9242 useless extension candidates. Maximal degree in co-relation 22430. Up to 9494 conditions per place. [2022-12-13 12:09:20,218 INFO L137 encePairwiseOnDemand]: 340/344 looper letters, 83 selfloop transitions, 4 changer transitions 0/94 dead transitions. [2022-12-13 12:09:20,218 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 94 transitions, 392 flow [2022-12-13 12:09:20,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:09:20,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:09:20,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 582 transitions. [2022-12-13 12:09:20,220 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.563953488372093 [2022-12-13 12:09:20,220 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 582 transitions. [2022-12-13 12:09:20,221 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 582 transitions. [2022-12-13 12:09:20,221 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:09:20,221 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 582 transitions. [2022-12-13 12:09:20,222 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 194.0) internal successors, (582), 3 states have internal predecessors, (582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:09:20,224 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 344.0) internal successors, (1376), 4 states have internal predecessors, (1376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:09:20,224 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 344.0) internal successors, (1376), 4 states have internal predecessors, (1376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:09:20,224 INFO L175 Difference]: Start difference. First operand has 68 places, 61 transitions, 154 flow. Second operand 3 states and 582 transitions. [2022-12-13 12:09:20,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 94 transitions, 392 flow [2022-12-13 12:09:20,226 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 94 transitions, 389 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 12:09:20,228 INFO L231 Difference]: Finished difference. Result has 68 places, 61 transitions, 163 flow [2022-12-13 12:09:20,229 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=344, PETRI_DIFFERENCE_MINUEND_FLOW=147, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=163, PETRI_PLACES=68, PETRI_TRANSITIONS=61} [2022-12-13 12:09:20,229 INFO L288 CegarLoopForPetriNet]: 64 programPoint places, 4 predicate places. [2022-12-13 12:09:20,230 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 61 transitions, 163 flow [2022-12-13 12:09:20,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 167.33333333333334) internal successors, (502), 3 states have internal predecessors, (502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:09:20,230 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:09:20,230 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:09:20,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 12:09:20,230 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-12-13 12:09:20,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:09:20,231 INFO L85 PathProgramCache]: Analyzing trace with hash -1969016585, now seen corresponding path program 1 times [2022-12-13 12:09:20,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:09:20,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062333136] [2022-12-13 12:09:20,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:09:20,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:09:20,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:09:20,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:09:20,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:09:20,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062333136] [2022-12-13 12:09:20,281 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062333136] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:09:20,281 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:09:20,281 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 12:09:20,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038094349] [2022-12-13 12:09:20,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:09:20,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:09:20,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:09:20,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:09:20,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:09:20,295 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 344 [2022-12-13 12:09:20,295 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 61 transitions, 163 flow. Second operand has 3 states, 3 states have (on average 168.0) internal successors, (504), 3 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:09:20,296 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:09:20,296 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 344 [2022-12-13 12:09:20,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:09:21,271 INFO L130 PetriNetUnfolder]: 8277/13763 cut-off events. [2022-12-13 12:09:21,271 INFO L131 PetriNetUnfolder]: For 2604/2604 co-relation queries the response was YES. [2022-12-13 12:09:21,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29067 conditions, 13763 events. 8277/13763 cut-off events. For 2604/2604 co-relation queries the response was YES. Maximal size of possible extension queue 371. Compared 90977 event pairs, 2976 based on Foata normal form. 0/11629 useless extension candidates. Maximal degree in co-relation 28937. Up to 8884 conditions per place. [2022-12-13 12:09:21,322 INFO L137 encePairwiseOnDemand]: 330/344 looper letters, 93 selfloop transitions, 6 changer transitions 0/105 dead transitions. [2022-12-13 12:09:21,322 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 105 transitions, 476 flow [2022-12-13 12:09:21,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:09:21,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:09:21,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 599 transitions. [2022-12-13 12:09:21,325 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5804263565891473 [2022-12-13 12:09:21,325 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 599 transitions. [2022-12-13 12:09:21,325 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 599 transitions. [2022-12-13 12:09:21,326 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:09:21,326 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 599 transitions. [2022-12-13 12:09:21,328 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 199.66666666666666) internal successors, (599), 3 states have internal predecessors, (599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:09:21,332 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 344.0) internal successors, (1376), 4 states have internal predecessors, (1376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:09:21,334 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 344.0) internal successors, (1376), 4 states have internal predecessors, (1376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:09:21,334 INFO L175 Difference]: Start difference. First operand has 68 places, 61 transitions, 163 flow. Second operand 3 states and 599 transitions. [2022-12-13 12:09:21,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 105 transitions, 476 flow [2022-12-13 12:09:21,336 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 105 transitions, 469 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 12:09:21,338 INFO L231 Difference]: Finished difference. Result has 71 places, 66 transitions, 219 flow [2022-12-13 12:09:21,339 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=344, PETRI_DIFFERENCE_MINUEND_FLOW=159, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=219, PETRI_PLACES=71, PETRI_TRANSITIONS=66} [2022-12-13 12:09:21,339 INFO L288 CegarLoopForPetriNet]: 64 programPoint places, 7 predicate places. [2022-12-13 12:09:21,340 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 66 transitions, 219 flow [2022-12-13 12:09:21,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 168.0) internal successors, (504), 3 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:09:21,340 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:09:21,340 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-12-13 12:09:21,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 12:09:21,341 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-12-13 12:09:21,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:09:21,341 INFO L85 PathProgramCache]: Analyzing trace with hash -560315650, now seen corresponding path program 1 times [2022-12-13 12:09:21,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:09:21,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125367216] [2022-12-13 12:09:21,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:09:21,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:09:21,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 12:09:21,356 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 12:09:21,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 12:09:21,375 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 12:09:21,375 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 12:09:21,376 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2022-12-13 12:09:21,376 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2022-12-13 12:09:21,376 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2022-12-13 12:09:21,376 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2022-12-13 12:09:21,376 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2022-12-13 12:09:21,376 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2022-12-13 12:09:21,376 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2022-12-13 12:09:21,377 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2022-12-13 12:09:21,377 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 17 remaining) [2022-12-13 12:09:21,377 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 17 remaining) [2022-12-13 12:09:21,377 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 17 remaining) [2022-12-13 12:09:21,377 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2022-12-13 12:09:21,377 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2022-12-13 12:09:21,377 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2022-12-13 12:09:21,377 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2022-12-13 12:09:21,378 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2022-12-13 12:09:21,378 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2022-12-13 12:09:21,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 12:09:21,378 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-12-13 12:09:21,379 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-13 12:09:21,379 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-12-13 12:09:21,404 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-12-13 12:09:21,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 222 places, 241 transitions, 512 flow [2022-12-13 12:09:21,476 INFO L130 PetriNetUnfolder]: 50/473 cut-off events. [2022-12-13 12:09:21,476 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-12-13 12:09:21,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 501 conditions, 473 events. 50/473 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1743 event pairs, 1 based on Foata normal form. 0/387 useless extension candidates. Maximal degree in co-relation 315. Up to 16 conditions per place. [2022-12-13 12:09:21,480 INFO L82 GeneralOperation]: Start removeDead. Operand has 222 places, 241 transitions, 512 flow [2022-12-13 12:09:21,485 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 222 places, 241 transitions, 512 flow [2022-12-13 12:09:21,485 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 12:09:21,485 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 222 places, 241 transitions, 512 flow [2022-12-13 12:09:21,485 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 222 places, 241 transitions, 512 flow [2022-12-13 12:09:21,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 222 places, 241 transitions, 512 flow [2022-12-13 12:09:21,551 INFO L130 PetriNetUnfolder]: 50/473 cut-off events. [2022-12-13 12:09:21,551 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-12-13 12:09:21,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 501 conditions, 473 events. 50/473 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1743 event pairs, 1 based on Foata normal form. 0/387 useless extension candidates. Maximal degree in co-relation 315. Up to 16 conditions per place. [2022-12-13 12:09:21,589 INFO L119 LiptonReduction]: Number of co-enabled transitions 30174 [2022-12-13 12:09:24,450 INFO L134 LiptonReduction]: Checked pairs total: 86343 [2022-12-13 12:09:24,451 INFO L136 LiptonReduction]: Total number of compositions: 185 [2022-12-13 12:09:24,452 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 12:09:24,452 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;@72f9df8a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 12:09:24,452 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2022-12-13 12:09:24,454 INFO L130 PetriNetUnfolder]: 0/9 cut-off events. [2022-12-13 12:09:24,454 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 12:09:24,454 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:09:24,454 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 12:09:24,455 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-12-13 12:09:24,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:09:24,455 INFO L85 PathProgramCache]: Analyzing trace with hash 1345347786, now seen corresponding path program 1 times [2022-12-13 12:09:24,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:09:24,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85877715] [2022-12-13 12:09:24,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:09:24,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:09:24,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:09:24,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:09:24,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:09:24,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85877715] [2022-12-13 12:09:24,486 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85877715] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:09:24,486 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:09:24,486 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 12:09:24,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849454927] [2022-12-13 12:09:24,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:09:24,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:09:24,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:09:24,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:09:24,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:09:24,496 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 207 out of 426 [2022-12-13 12:09:24,497 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 101 transitions, 232 flow. Second operand has 3 states, 3 states have (on average 208.33333333333334) internal successors, (625), 3 states have internal predecessors, (625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:09:24,498 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:09:24,498 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 207 of 426 [2022-12-13 12:09:24,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:09:40,870 INFO L130 PetriNetUnfolder]: 205155/288607 cut-off events. [2022-12-13 12:09:40,870 INFO L131 PetriNetUnfolder]: For 3577/3577 co-relation queries the response was YES. [2022-12-13 12:09:41,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 573492 conditions, 288607 events. 205155/288607 cut-off events. For 3577/3577 co-relation queries the response was YES. Maximal size of possible extension queue 5744. Compared 2178043 event pairs, 133481 based on Foata normal form. 17835/230115 useless extension candidates. Maximal degree in co-relation 40351. Up to 282520 conditions per place. [2022-12-13 12:09:41,909 INFO L137 encePairwiseOnDemand]: 401/426 looper letters, 88 selfloop transitions, 2 changer transitions 0/100 dead transitions. [2022-12-13 12:09:41,910 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 100 transitions, 410 flow [2022-12-13 12:09:41,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:09:41,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:09:41,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 740 transitions. [2022-12-13 12:09:41,912 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5790297339593115 [2022-12-13 12:09:41,912 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 740 transitions. [2022-12-13 12:09:41,912 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 740 transitions. [2022-12-13 12:09:41,912 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:09:41,913 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 740 transitions. [2022-12-13 12:09:41,914 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 246.66666666666666) internal successors, (740), 3 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:09:41,916 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 426.0) internal successors, (1704), 4 states have internal predecessors, (1704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:09:41,916 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 426.0) internal successors, (1704), 4 states have internal predecessors, (1704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:09:41,916 INFO L175 Difference]: Start difference. First operand has 85 places, 101 transitions, 232 flow. Second operand 3 states and 740 transitions. [2022-12-13 12:09:41,916 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 100 transitions, 410 flow [2022-12-13 12:09:41,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 100 transitions, 410 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 12:09:41,921 INFO L231 Difference]: Finished difference. Result has 88 places, 82 transitions, 208 flow [2022-12-13 12:09:41,921 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=426, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=208, PETRI_PLACES=88, PETRI_TRANSITIONS=82} [2022-12-13 12:09:41,921 INFO L288 CegarLoopForPetriNet]: 85 programPoint places, 3 predicate places. [2022-12-13 12:09:41,921 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 82 transitions, 208 flow [2022-12-13 12:09:41,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 208.33333333333334) internal successors, (625), 3 states have internal predecessors, (625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:09:41,922 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:09:41,922 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-12-13 12:09:41,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 12:09:41,922 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-12-13 12:09:41,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:09:41,922 INFO L85 PathProgramCache]: Analyzing trace with hash 296407335, now seen corresponding path program 1 times [2022-12-13 12:09:41,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:09:41,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148108779] [2022-12-13 12:09:41,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:09:41,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:09:41,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:09:41,956 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 12:09:41,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:09:41,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148108779] [2022-12-13 12:09:41,956 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [148108779] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:09:41,957 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:09:41,957 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 12:09:41,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222089239] [2022-12-13 12:09:41,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:09:41,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:09:41,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:09:41,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:09:41,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:09:41,965 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 206 out of 426 [2022-12-13 12:09:41,966 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 82 transitions, 208 flow. Second operand has 3 states, 3 states have (on average 208.33333333333334) internal successors, (625), 3 states have internal predecessors, (625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:09:41,966 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:09:41,966 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 206 of 426 [2022-12-13 12:09:41,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:09:56,926 INFO L130 PetriNetUnfolder]: 190791/270113 cut-off events. [2022-12-13 12:09:56,926 INFO L131 PetriNetUnfolder]: For 8025/8025 co-relation queries the response was YES. [2022-12-13 12:09:57,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 550987 conditions, 270113 events. 190791/270113 cut-off events. For 8025/8025 co-relation queries the response was YES. Maximal size of possible extension queue 5305. Compared 2122987 event pairs, 38248 based on Foata normal form. 0/208188 useless extension candidates. Maximal degree in co-relation 550155. Up to 209171 conditions per place. [2022-12-13 12:09:57,949 INFO L137 encePairwiseOnDemand]: 422/426 looper letters, 116 selfloop transitions, 4 changer transitions 0/130 dead transitions. [2022-12-13 12:09:57,949 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 130 transitions, 542 flow [2022-12-13 12:09:57,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:09:57,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:09:57,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 738 transitions. [2022-12-13 12:09:57,951 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5774647887323944 [2022-12-13 12:09:57,951 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 738 transitions. [2022-12-13 12:09:57,951 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 738 transitions. [2022-12-13 12:09:57,952 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:09:57,952 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 738 transitions. [2022-12-13 12:09:57,953 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 246.0) internal successors, (738), 3 states have internal predecessors, (738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:09:57,954 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 426.0) internal successors, (1704), 4 states have internal predecessors, (1704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:09:57,955 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 426.0) internal successors, (1704), 4 states have internal predecessors, (1704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:09:57,955 INFO L175 Difference]: Start difference. First operand has 88 places, 82 transitions, 208 flow. Second operand 3 states and 738 transitions. [2022-12-13 12:09:57,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 130 transitions, 542 flow [2022-12-13 12:09:57,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 130 transitions, 540 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 12:09:57,967 INFO L231 Difference]: Finished difference. Result has 89 places, 82 transitions, 218 flow [2022-12-13 12:09:57,967 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=426, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=218, PETRI_PLACES=89, PETRI_TRANSITIONS=82} [2022-12-13 12:09:57,968 INFO L288 CegarLoopForPetriNet]: 85 programPoint places, 4 predicate places. [2022-12-13 12:09:57,968 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 82 transitions, 218 flow [2022-12-13 12:09:57,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 208.33333333333334) internal successors, (625), 3 states have internal predecessors, (625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:09:57,968 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:09:57,968 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-12-13 12:09:57,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 12:09:57,969 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-12-13 12:09:57,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:09:57,969 INFO L85 PathProgramCache]: Analyzing trace with hash 296407305, now seen corresponding path program 1 times [2022-12-13 12:09:57,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:09:57,969 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602743710] [2022-12-13 12:09:57,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:09:57,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:09:57,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:09:58,002 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:09:58,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:09:58,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602743710] [2022-12-13 12:09:58,003 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602743710] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:09:58,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1409530131] [2022-12-13 12:09:58,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:09:58,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:09:58,003 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a59ebabb-e7ee-4055-9e21-d5168994612f/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:09:58,004 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a59ebabb-e7ee-4055-9e21-d5168994612f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:09:58,005 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a59ebabb-e7ee-4055-9e21-d5168994612f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 12:09:58,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:09:58,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 12:09:58,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:09:58,078 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:09:58,078 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 12:09:58,078 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1409530131] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:09:58,078 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 12:09:58,078 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2022-12-13 12:09:58,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834972394] [2022-12-13 12:09:58,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:09:58,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 12:09:58,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:09:58,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 12:09:58,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 12:09:58,090 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 207 out of 426 [2022-12-13 12:09:58,091 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 82 transitions, 218 flow. Second operand has 4 states, 4 states have (on average 208.75) internal successors, (835), 4 states have internal predecessors, (835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:09:58,091 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:09:58,091 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 207 of 426 [2022-12-13 12:09:58,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:10:11,267 INFO L130 PetriNetUnfolder]: 176427/248683 cut-off events. [2022-12-13 12:10:11,267 INFO L131 PetriNetUnfolder]: For 50173/50173 co-relation queries the response was YES. [2022-12-13 12:10:11,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 520488 conditions, 248683 events. 176427/248683 cut-off events. For 50173/50173 co-relation queries the response was YES. Maximal size of possible extension queue 4659. Compared 1831935 event pairs, 114545 based on Foata normal form. 5184/200382 useless extension candidates. Maximal degree in co-relation 35922. Up to 243423 conditions per place. [2022-12-13 12:10:12,506 INFO L137 encePairwiseOnDemand]: 423/426 looper letters, 86 selfloop transitions, 2 changer transitions 0/98 dead transitions. [2022-12-13 12:10:12,506 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 98 transitions, 424 flow [2022-12-13 12:10:12,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 12:10:12,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 12:10:12,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 917 transitions. [2022-12-13 12:10:12,512 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5381455399061033 [2022-12-13 12:10:12,512 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 917 transitions. [2022-12-13 12:10:12,512 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 917 transitions. [2022-12-13 12:10:12,513 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:10:12,513 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 917 transitions. [2022-12-13 12:10:12,514 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 229.25) internal successors, (917), 4 states have internal predecessors, (917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:10:12,517 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 426.0) internal successors, (2130), 5 states have internal predecessors, (2130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:10:12,517 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 426.0) internal successors, (2130), 5 states have internal predecessors, (2130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:10:12,518 INFO L175 Difference]: Start difference. First operand has 89 places, 82 transitions, 218 flow. Second operand 4 states and 917 transitions. [2022-12-13 12:10:12,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 98 transitions, 424 flow [2022-12-13 12:10:12,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 98 transitions, 420 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 12:10:12,530 INFO L231 Difference]: Finished difference. Result has 90 places, 81 transitions, 214 flow [2022-12-13 12:10:12,530 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=426, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=214, PETRI_PLACES=90, PETRI_TRANSITIONS=81} [2022-12-13 12:10:12,531 INFO L288 CegarLoopForPetriNet]: 85 programPoint places, 5 predicate places. [2022-12-13 12:10:12,531 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 81 transitions, 214 flow [2022-12-13 12:10:12,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 208.75) internal successors, (835), 4 states have internal predecessors, (835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:10:12,531 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:10:12,532 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:10:12,536 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a59ebabb-e7ee-4055-9e21-d5168994612f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 12:10:12,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a59ebabb-e7ee-4055-9e21-d5168994612f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-12-13 12:10:12,734 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-12-13 12:10:12,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:10:12,735 INFO L85 PathProgramCache]: Analyzing trace with hash -1522265754, now seen corresponding path program 1 times [2022-12-13 12:10:12,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:10:12,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382298016] [2022-12-13 12:10:12,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:10:12,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:10:12,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:10:12,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:10:12,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:10:12,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382298016] [2022-12-13 12:10:12,782 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382298016] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:10:12,782 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:10:12,782 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 12:10:12,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058303926] [2022-12-13 12:10:12,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:10:12,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:10:12,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:10:12,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:10:12,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:10:12,799 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 204 out of 426 [2022-12-13 12:10:12,800 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 81 transitions, 214 flow. Second operand has 3 states, 3 states have (on average 207.0) internal successors, (621), 3 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:10:12,800 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:10:12,800 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 204 of 426 [2022-12-13 12:10:12,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:10:30,012 INFO L130 PetriNetUnfolder]: 213612/308995 cut-off events. [2022-12-13 12:10:30,013 INFO L131 PetriNetUnfolder]: For 28881/28881 co-relation queries the response was YES. [2022-12-13 12:10:30,406 INFO L83 FinitePrefix]: Finished finitePrefix Result has 635504 conditions, 308995 events. 213612/308995 cut-off events. For 28881/28881 co-relation queries the response was YES. Maximal size of possible extension queue 6377. Compared 2500239 event pairs, 85091 based on Foata normal form. 0/254372 useless extension candidates. Maximal degree in co-relation 635372. Up to 220187 conditions per place. [2022-12-13 12:10:31,239 INFO L137 encePairwiseOnDemand]: 406/426 looper letters, 119 selfloop transitions, 8 changer transitions 0/137 dead transitions. [2022-12-13 12:10:31,239 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 137 transitions, 615 flow [2022-12-13 12:10:31,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:10:31,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:10:31,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 748 transitions. [2022-12-13 12:10:31,241 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5852895148669797 [2022-12-13 12:10:31,241 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 748 transitions. [2022-12-13 12:10:31,241 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 748 transitions. [2022-12-13 12:10:31,242 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:10:31,242 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 748 transitions. [2022-12-13 12:10:31,243 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 249.33333333333334) internal successors, (748), 3 states have internal predecessors, (748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:10:31,244 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 426.0) internal successors, (1704), 4 states have internal predecessors, (1704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:10:31,245 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 426.0) internal successors, (1704), 4 states have internal predecessors, (1704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:10:31,245 INFO L175 Difference]: Start difference. First operand has 90 places, 81 transitions, 214 flow. Second operand 3 states and 748 transitions. [2022-12-13 12:10:31,245 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 137 transitions, 615 flow [2022-12-13 12:10:31,261 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 137 transitions, 611 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 12:10:31,263 INFO L231 Difference]: Finished difference. Result has 92 places, 88 transitions, 295 flow [2022-12-13 12:10:31,263 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=426, PETRI_DIFFERENCE_MINUEND_FLOW=211, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=295, PETRI_PLACES=92, PETRI_TRANSITIONS=88} [2022-12-13 12:10:31,263 INFO L288 CegarLoopForPetriNet]: 85 programPoint places, 7 predicate places. [2022-12-13 12:10:31,263 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 88 transitions, 295 flow [2022-12-13 12:10:31,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 207.0) internal successors, (621), 3 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:10:31,264 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:10:31,264 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:10:31,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 12:10:31,264 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-12-13 12:10:31,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:10:31,264 INFO L85 PathProgramCache]: Analyzing trace with hash 1550343818, now seen corresponding path program 1 times [2022-12-13 12:10:31,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:10:31,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072723093] [2022-12-13 12:10:31,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:10:31,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:10:31,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:10:31,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:10:31,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:10:31,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072723093] [2022-12-13 12:10:31,325 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072723093] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:10:31,325 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:10:31,325 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 12:10:31,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923930972] [2022-12-13 12:10:31,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:10:31,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 12:10:31,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:10:31,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 12:10:31,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 12:10:31,360 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 199 out of 426 [2022-12-13 12:10:31,362 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 88 transitions, 295 flow. Second operand has 5 states, 5 states have (on average 201.6) internal successors, (1008), 5 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:10:31,362 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:10:31,362 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 199 of 426 [2022-12-13 12:10:31,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:10:56,515 INFO L130 PetriNetUnfolder]: 260728/378857 cut-off events. [2022-12-13 12:10:56,515 INFO L131 PetriNetUnfolder]: For 97150/97150 co-relation queries the response was YES. [2022-12-13 12:10:57,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 893942 conditions, 378857 events. 260728/378857 cut-off events. For 97150/97150 co-relation queries the response was YES. Maximal size of possible extension queue 8286. Compared 3176999 event pairs, 60251 based on Foata normal form. 0/343941 useless extension candidates. Maximal degree in co-relation 893811. Up to 181963 conditions per place. [2022-12-13 12:10:58,480 INFO L137 encePairwiseOnDemand]: 405/426 looper letters, 287 selfloop transitions, 39 changer transitions 0/336 dead transitions. [2022-12-13 12:10:58,480 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 336 transitions, 1686 flow [2022-12-13 12:10:58,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 12:10:58,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 12:10:58,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1724 transitions. [2022-12-13 12:10:58,484 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5781354795439303 [2022-12-13 12:10:58,484 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1724 transitions. [2022-12-13 12:10:58,484 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1724 transitions. [2022-12-13 12:10:58,484 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:10:58,484 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1724 transitions. [2022-12-13 12:10:58,487 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 246.28571428571428) internal successors, (1724), 7 states have internal predecessors, (1724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:10:58,489 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 426.0) internal successors, (3408), 8 states have internal predecessors, (3408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:10:58,490 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 426.0) internal successors, (3408), 8 states have internal predecessors, (3408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:10:58,490 INFO L175 Difference]: Start difference. First operand has 92 places, 88 transitions, 295 flow. Second operand 7 states and 1724 transitions. [2022-12-13 12:10:58,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 336 transitions, 1686 flow [2022-12-13 12:10:58,786 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 336 transitions, 1654 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 12:10:58,790 INFO L231 Difference]: Finished difference. Result has 101 places, 119 transitions, 611 flow [2022-12-13 12:10:58,790 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=426, PETRI_DIFFERENCE_MINUEND_FLOW=279, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=611, PETRI_PLACES=101, PETRI_TRANSITIONS=119} [2022-12-13 12:10:58,790 INFO L288 CegarLoopForPetriNet]: 85 programPoint places, 16 predicate places. [2022-12-13 12:10:58,791 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 119 transitions, 611 flow [2022-12-13 12:10:58,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 201.6) internal successors, (1008), 5 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:10:58,791 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:10:58,791 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:10:58,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-13 12:10:58,791 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-12-13 12:10:58,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:10:58,791 INFO L85 PathProgramCache]: Analyzing trace with hash 1550343713, now seen corresponding path program 1 times [2022-12-13 12:10:58,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:10:58,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6109023] [2022-12-13 12:10:58,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:10:58,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:10:58,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:10:58,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:10:58,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:10:58,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6109023] [2022-12-13 12:10:58,841 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6109023] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:10:58,841 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:10:58,841 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 12:10:58,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490166145] [2022-12-13 12:10:58,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:10:58,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 12:10:58,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:10:58,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 12:10:58,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 12:10:58,870 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 199 out of 426 [2022-12-13 12:10:58,871 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 119 transitions, 611 flow. Second operand has 5 states, 5 states have (on average 201.6) internal successors, (1008), 5 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:10:58,871 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:10:58,871 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 199 of 426 [2022-12-13 12:10:58,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:11:26,782 INFO L130 PetriNetUnfolder]: 258005/379971 cut-off events. [2022-12-13 12:11:26,782 INFO L131 PetriNetUnfolder]: For 364042/364042 co-relation queries the response was YES. [2022-12-13 12:11:27,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1036501 conditions, 379971 events. 258005/379971 cut-off events. For 364042/364042 co-relation queries the response was YES. Maximal size of possible extension queue 8503. Compared 3273987 event pairs, 53234 based on Foata normal form. 12174/374402 useless extension candidates. Maximal degree in co-relation 1036369. Up to 200948 conditions per place. [2022-12-13 12:11:28,958 INFO L137 encePairwiseOnDemand]: 405/426 looper letters, 307 selfloop transitions, 45 changer transitions 0/362 dead transitions. [2022-12-13 12:11:28,958 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 362 transitions, 2166 flow [2022-12-13 12:11:28,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 12:11:28,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 12:11:28,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1724 transitions. [2022-12-13 12:11:28,962 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5781354795439303 [2022-12-13 12:11:28,962 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1724 transitions. [2022-12-13 12:11:28,962 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1724 transitions. [2022-12-13 12:11:28,963 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:11:28,963 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1724 transitions. [2022-12-13 12:11:28,966 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 246.28571428571428) internal successors, (1724), 7 states have internal predecessors, (1724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:11:28,968 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 426.0) internal successors, (3408), 8 states have internal predecessors, (3408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:11:28,969 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 426.0) internal successors, (3408), 8 states have internal predecessors, (3408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:11:28,969 INFO L175 Difference]: Start difference. First operand has 101 places, 119 transitions, 611 flow. Second operand 7 states and 1724 transitions. [2022-12-13 12:11:28,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 362 transitions, 2166 flow [2022-12-13 12:11:31,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 362 transitions, 2166 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 12:11:31,889 INFO L231 Difference]: Finished difference. Result has 111 places, 145 transitions, 1053 flow [2022-12-13 12:11:31,889 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=426, PETRI_DIFFERENCE_MINUEND_FLOW=611, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1053, PETRI_PLACES=111, PETRI_TRANSITIONS=145} [2022-12-13 12:11:31,890 INFO L288 CegarLoopForPetriNet]: 85 programPoint places, 26 predicate places. [2022-12-13 12:11:31,890 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 145 transitions, 1053 flow [2022-12-13 12:11:31,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 201.6) internal successors, (1008), 5 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:11:31,890 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:11:31,890 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2022-12-13 12:11:31,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-13 12:11:31,890 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-12-13 12:11:31,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:11:31,891 INFO L85 PathProgramCache]: Analyzing trace with hash 1322862947, now seen corresponding path program 1 times [2022-12-13 12:11:31,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:11:31,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505797447] [2022-12-13 12:11:31,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:11:31,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:11:31,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 12:11:31,900 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 12:11:31,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 12:11:31,909 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 12:11:31,909 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 12:11:31,909 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 21 remaining) [2022-12-13 12:11:31,910 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 21 remaining) [2022-12-13 12:11:31,910 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 21 remaining) [2022-12-13 12:11:31,910 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 21 remaining) [2022-12-13 12:11:31,910 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 21 remaining) [2022-12-13 12:11:31,910 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 21 remaining) [2022-12-13 12:11:31,910 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 21 remaining) [2022-12-13 12:11:31,910 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 21 remaining) [2022-12-13 12:11:31,910 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 21 remaining) [2022-12-13 12:11:31,910 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 21 remaining) [2022-12-13 12:11:31,911 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 21 remaining) [2022-12-13 12:11:31,911 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 21 remaining) [2022-12-13 12:11:31,911 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 21 remaining) [2022-12-13 12:11:31,911 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 21 remaining) [2022-12-13 12:11:31,911 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 21 remaining) [2022-12-13 12:11:31,911 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 21 remaining) [2022-12-13 12:11:31,911 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 21 remaining) [2022-12-13 12:11:31,911 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 21 remaining) [2022-12-13 12:11:31,911 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 21 remaining) [2022-12-13 12:11:31,912 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 21 remaining) [2022-12-13 12:11:31,912 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 21 remaining) [2022-12-13 12:11:31,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-13 12:11:31,912 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:11:31,912 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-13 12:11:31,913 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-12-13 12:11:31,935 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-12-13 12:11:31,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 266 places, 290 transitions, 624 flow [2022-12-13 12:11:32,016 INFO L130 PetriNetUnfolder]: 81/723 cut-off events. [2022-12-13 12:11:32,016 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2022-12-13 12:11:32,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 778 conditions, 723 events. 81/723 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 3051 event pairs, 6 based on Foata normal form. 0/588 useless extension candidates. Maximal degree in co-relation 493. Up to 32 conditions per place. [2022-12-13 12:11:32,020 INFO L82 GeneralOperation]: Start removeDead. Operand has 266 places, 290 transitions, 624 flow [2022-12-13 12:11:32,024 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 266 places, 290 transitions, 624 flow [2022-12-13 12:11:32,024 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 12:11:32,024 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 266 places, 290 transitions, 624 flow [2022-12-13 12:11:32,024 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 266 places, 290 transitions, 624 flow [2022-12-13 12:11:32,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 266 places, 290 transitions, 624 flow [2022-12-13 12:11:32,099 INFO L130 PetriNetUnfolder]: 81/723 cut-off events. [2022-12-13 12:11:32,099 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2022-12-13 12:11:32,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 778 conditions, 723 events. 81/723 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 3051 event pairs, 6 based on Foata normal form. 0/588 useless extension candidates. Maximal degree in co-relation 493. Up to 32 conditions per place. [2022-12-13 12:11:32,122 INFO L119 LiptonReduction]: Number of co-enabled transitions 49632 [2022-12-13 12:11:34,923 INFO L134 LiptonReduction]: Checked pairs total: 129410 [2022-12-13 12:11:34,923 INFO L136 LiptonReduction]: Total number of compositions: 219 [2022-12-13 12:11:34,924 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 12:11:34,924 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;@72f9df8a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 12:11:34,924 INFO L358 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2022-12-13 12:11:34,926 INFO L130 PetriNetUnfolder]: 0/9 cut-off events. [2022-12-13 12:11:34,926 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 12:11:34,926 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:11:34,926 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 12:11:34,926 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-12-13 12:11:34,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:11:34,927 INFO L85 PathProgramCache]: Analyzing trace with hash 1877574466, now seen corresponding path program 1 times [2022-12-13 12:11:34,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:11:34,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455813470] [2022-12-13 12:11:34,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:11:34,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:11:34,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:11:34,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:11:34,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:11:34,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455813470] [2022-12-13 12:11:34,950 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455813470] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:11:34,951 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:11:34,951 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 12:11:34,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843879720] [2022-12-13 12:11:34,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:11:34,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:11:34,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:11:34,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:11:34,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:11:34,959 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 248 out of 509 [2022-12-13 12:11:34,960 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 128 transitions, 300 flow. Second operand has 3 states, 3 states have (on average 249.33333333333334) internal successors, (748), 3 states have internal predecessors, (748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:11:34,960 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:11:34,960 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 248 of 509 [2022-12-13 12:11:34,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand