./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-counter-fun.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0102581-0a7d-471f-b898-7f26a5b1cfa8/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0102581-0a7d-471f-b898-7f26a5b1cfa8/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_d0102581-0a7d-471f-b898-7f26a5b1cfa8/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0102581-0a7d-471f-b898-7f26a5b1cfa8/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-counter-fun.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0102581-0a7d-471f-b898-7f26a5b1cfa8/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_d0102581-0a7d-471f-b898-7f26a5b1cfa8/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 00b544e07f34285bd260f481b4b1205a15ed1c83d300c57496244de51f7f3936 --- 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 11:53:49,754 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 11:53:49,756 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 11:53:49,775 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 11:53:49,775 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 11:53:49,776 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 11:53:49,777 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 11:53:49,779 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 11:53:49,780 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 11:53:49,781 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 11:53:49,782 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 11:53:49,783 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 11:53:49,783 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 11:53:49,784 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 11:53:49,785 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 11:53:49,786 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 11:53:49,787 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 11:53:49,788 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 11:53:49,789 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 11:53:49,791 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 11:53:49,792 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 11:53:49,794 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 11:53:49,795 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 11:53:49,796 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 11:53:49,799 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 11:53:49,799 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 11:53:49,799 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 11:53:49,800 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 11:53:49,801 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 11:53:49,801 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 11:53:49,802 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 11:53:49,802 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 11:53:49,803 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 11:53:49,804 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 11:53:49,805 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 11:53:49,805 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 11:53:49,805 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 11:53:49,806 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 11:53:49,806 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 11:53:49,807 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 11:53:49,807 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 11:53:49,808 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0102581-0a7d-471f-b898-7f26a5b1cfa8/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-12-13 11:53:49,828 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 11:53:49,828 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 11:53:49,829 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 11:53:49,829 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 11:53:49,829 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 11:53:49,830 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 11:53:49,830 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 11:53:49,830 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 11:53:49,830 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 11:53:49,831 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 11:53:49,831 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 11:53:49,831 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 11:53:49,831 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 11:53:49,831 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 11:53:49,831 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 11:53:49,832 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 11:53:49,832 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 11:53:49,832 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 11:53:49,832 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-13 11:53:49,832 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 11:53:49,832 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 11:53:49,832 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 11:53:49,832 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 11:53:49,832 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 11:53:49,833 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 11:53:49,833 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 11:53:49,833 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 11:53:49,833 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 11:53:49,833 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 11:53:49,833 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 11:53:49,833 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 11:53:49,833 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 11:53:49,833 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 11:53:49,833 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 11:53:49,833 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 11:53:49,834 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 11:53:49,834 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 11:53:49,834 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_d0102581-0a7d-471f-b898-7f26a5b1cfa8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0102581-0a7d-471f-b898-7f26a5b1cfa8/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 00b544e07f34285bd260f481b4b1205a15ed1c83d300c57496244de51f7f3936 [2022-12-13 11:53:50,025 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 11:53:50,044 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 11:53:50,046 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 11:53:50,047 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 11:53:50,047 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 11:53:50,048 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0102581-0a7d-471f-b898-7f26a5b1cfa8/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/weaver/popl20-counter-fun.wvr.c [2022-12-13 11:53:52,549 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 11:53:52,715 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 11:53:52,715 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0102581-0a7d-471f-b898-7f26a5b1cfa8/sv-benchmarks/c/weaver/popl20-counter-fun.wvr.c [2022-12-13 11:53:52,720 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0102581-0a7d-471f-b898-7f26a5b1cfa8/bin/uautomizer-uyxdKDjOR8/data/3d58ec011/e2e4c776c3454ec3b14e5599ad122d11/FLAG7fbbc99b8 [2022-12-13 11:53:53,124 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0102581-0a7d-471f-b898-7f26a5b1cfa8/bin/uautomizer-uyxdKDjOR8/data/3d58ec011/e2e4c776c3454ec3b14e5599ad122d11 [2022-12-13 11:53:53,127 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 11:53:53,128 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 11:53:53,129 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 11:53:53,129 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 11:53:53,131 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 11:53:53,132 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 11:53:53" (1/1) ... [2022-12-13 11:53:53,132 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ee120e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:53:53, skipping insertion in model container [2022-12-13 11:53:53,133 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 11:53:53" (1/1) ... [2022-12-13 11:53:53,138 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 11:53:53,155 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 11:53:53,282 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:53:53,285 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:53:53,289 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:53:53,291 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:53:53,297 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_d0102581-0a7d-471f-b898-7f26a5b1cfa8/sv-benchmarks/c/weaver/popl20-counter-fun.wvr.c[2681,2694] [2022-12-13 11:53:53,302 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 11:53:53,311 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 11:53:53,324 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:53:53,326 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:53:53,328 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:53:53,330 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:53:53,333 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_d0102581-0a7d-471f-b898-7f26a5b1cfa8/sv-benchmarks/c/weaver/popl20-counter-fun.wvr.c[2681,2694] [2022-12-13 11:53:53,337 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 11:53:53,351 INFO L208 MainTranslator]: Completed translation [2022-12-13 11:53:53,351 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:53:53 WrapperNode [2022-12-13 11:53:53,351 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 11:53:53,352 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 11:53:53,353 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 11:53:53,353 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 11:53:53,360 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:53:53" (1/1) ... [2022-12-13 11:53:53,368 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:53:53" (1/1) ... [2022-12-13 11:53:53,391 INFO L138 Inliner]: procedures = 24, calls = 45, calls flagged for inlining = 13, calls inlined = 15, statements flattened = 201 [2022-12-13 11:53:53,391 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 11:53:53,392 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 11:53:53,392 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 11:53:53,392 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 11:53:53,401 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:53:53" (1/1) ... [2022-12-13 11:53:53,401 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:53:53" (1/1) ... [2022-12-13 11:53:53,404 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:53:53" (1/1) ... [2022-12-13 11:53:53,405 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:53:53" (1/1) ... [2022-12-13 11:53:53,410 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:53:53" (1/1) ... [2022-12-13 11:53:53,414 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:53:53" (1/1) ... [2022-12-13 11:53:53,415 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:53:53" (1/1) ... [2022-12-13 11:53:53,416 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:53:53" (1/1) ... [2022-12-13 11:53:53,417 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 11:53:53,418 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 11:53:53,418 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 11:53:53,419 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 11:53:53,419 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:53:53" (1/1) ... [2022-12-13 11:53:53,426 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 11:53:53,435 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0102581-0a7d-471f-b898-7f26a5b1cfa8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:53:53,446 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0102581-0a7d-471f-b898-7f26a5b1cfa8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 11:53:53,448 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0102581-0a7d-471f-b898-7f26a5b1cfa8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 11:53:53,481 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 11:53:53,482 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-13 11:53:53,482 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-13 11:53:53,482 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-13 11:53:53,482 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-13 11:53:53,482 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 11:53:53,482 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 11:53:53,482 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 11:53:53,483 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-13 11:53:53,483 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-13 11:53:53,483 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-13 11:53:53,483 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 11:53:53,483 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 11:53:53,483 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 11:53:53,483 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 11:53:53,485 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 11:53:53,573 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 11:53:53,575 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 11:53:53,829 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 11:53:53,914 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 11:53:53,914 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-12-13 11:53:53,915 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 11:53:53 BoogieIcfgContainer [2022-12-13 11:53:53,916 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 11:53:53,917 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 11:53:53,917 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 11:53:53,920 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 11:53:53,920 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 11:53:53" (1/3) ... [2022-12-13 11:53:53,920 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19d99957 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 11:53:53, skipping insertion in model container [2022-12-13 11:53:53,920 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:53:53" (2/3) ... [2022-12-13 11:53:53,921 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19d99957 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 11:53:53, skipping insertion in model container [2022-12-13 11:53:53,921 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 11:53:53" (3/3) ... [2022-12-13 11:53:53,922 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-counter-fun.wvr.c [2022-12-13 11:53:53,928 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 11:53:53,936 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 11:53:53,936 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-12-13 11:53:53,936 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 11:53:54,001 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-13 11:53:54,040 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 174 places, 180 transitions, 376 flow [2022-12-13 11:53:54,099 INFO L130 PetriNetUnfolder]: 13/178 cut-off events. [2022-12-13 11:53:54,099 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 11:53:54,104 INFO L83 FinitePrefix]: Finished finitePrefix Result has 187 conditions, 178 events. 13/178 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 116 event pairs, 0 based on Foata normal form. 0/157 useless extension candidates. Maximal degree in co-relation 140. Up to 2 conditions per place. [2022-12-13 11:53:54,104 INFO L82 GeneralOperation]: Start removeDead. Operand has 174 places, 180 transitions, 376 flow [2022-12-13 11:53:54,110 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 154 places, 159 transitions, 327 flow [2022-12-13 11:53:54,113 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 11:53:54,121 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 154 places, 159 transitions, 327 flow [2022-12-13 11:53:54,123 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 154 places, 159 transitions, 327 flow [2022-12-13 11:53:54,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 154 places, 159 transitions, 327 flow [2022-12-13 11:53:54,154 INFO L130 PetriNetUnfolder]: 12/159 cut-off events. [2022-12-13 11:53:54,154 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 11:53:54,155 INFO L83 FinitePrefix]: Finished finitePrefix Result has 167 conditions, 159 events. 12/159 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 116 event pairs, 0 based on Foata normal form. 0/139 useless extension candidates. Maximal degree in co-relation 140. Up to 2 conditions per place. [2022-12-13 11:53:54,156 INFO L119 LiptonReduction]: Number of co-enabled transitions 812 [2022-12-13 11:53:59,247 INFO L134 LiptonReduction]: Checked pairs total: 855 [2022-12-13 11:53:59,247 INFO L136 LiptonReduction]: Total number of compositions: 178 [2022-12-13 11:53:59,257 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 11:53:59,262 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;@296dfe04, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 11:53:59,262 INFO L358 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2022-12-13 11:53:59,264 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2022-12-13 11:53:59,264 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 11:53:59,264 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:53:59,264 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-12-13 11:53:59,265 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-12-13 11:53:59,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:53:59,268 INFO L85 PathProgramCache]: Analyzing trace with hash 26936, now seen corresponding path program 1 times [2022-12-13 11:53:59,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:53:59,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004066217] [2022-12-13 11:53:59,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:53:59,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:53:59,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:53:59,447 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 11:53:59,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:53:59,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004066217] [2022-12-13 11:53:59,449 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004066217] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:53:59,449 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:53:59,449 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 11:53:59,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25617794] [2022-12-13 11:53:59,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:53:59,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:53:59,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:53:59,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:53:59,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:53:59,504 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 358 [2022-12-13 11:53:59,507 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 25 transitions, 59 flow. Second operand has 3 states, 3 states have (on average 158.66666666666666) internal successors, (476), 3 states have internal predecessors, (476), 0 states have call successors, (0), 0 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 11:53:59,507 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:53:59,507 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 358 [2022-12-13 11:53:59,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:53:59,661 INFO L130 PetriNetUnfolder]: 283/433 cut-off events. [2022-12-13 11:53:59,661 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2022-12-13 11:53:59,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 893 conditions, 433 events. 283/433 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 1745 event pairs, 125 based on Foata normal form. 0/178 useless extension candidates. Maximal degree in co-relation 379. Up to 213 conditions per place. [2022-12-13 11:53:59,665 INFO L137 encePairwiseOnDemand]: 350/358 looper letters, 37 selfloop transitions, 4 changer transitions 0/43 dead transitions. [2022-12-13 11:53:59,665 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 43 transitions, 186 flow [2022-12-13 11:53:59,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:53:59,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 11:53:59,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 519 transitions. [2022-12-13 11:53:59,681 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.48324022346368717 [2022-12-13 11:53:59,681 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 519 transitions. [2022-12-13 11:53:59,682 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 519 transitions. [2022-12-13 11:53:59,684 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:53:59,686 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 519 transitions. [2022-12-13 11:53:59,690 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 173.0) internal successors, (519), 3 states have internal predecessors, (519), 0 states have call successors, (0), 0 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 11:53:59,696 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 358.0) internal successors, (1432), 4 states have internal predecessors, (1432), 0 states have call successors, (0), 0 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 11:53:59,697 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 358.0) internal successors, (1432), 4 states have internal predecessors, (1432), 0 states have call successors, (0), 0 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 11:53:59,699 INFO L175 Difference]: Start difference. First operand has 28 places, 25 transitions, 59 flow. Second operand 3 states and 519 transitions. [2022-12-13 11:53:59,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 43 transitions, 186 flow [2022-12-13 11:53:59,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 43 transitions, 176 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-12-13 11:53:59,705 INFO L231 Difference]: Finished difference. Result has 29 places, 28 transitions, 90 flow [2022-12-13 11:53:59,707 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=358, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=90, PETRI_PLACES=29, PETRI_TRANSITIONS=28} [2022-12-13 11:53:59,710 INFO L288 CegarLoopForPetriNet]: 28 programPoint places, 1 predicate places. [2022-12-13 11:53:59,711 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 28 transitions, 90 flow [2022-12-13 11:53:59,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 158.66666666666666) internal successors, (476), 3 states have internal predecessors, (476), 0 states have call successors, (0), 0 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 11:53:59,711 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:53:59,711 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 11:53:59,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 11:53:59,712 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-12-13 11:53:59,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:53:59,713 INFO L85 PathProgramCache]: Analyzing trace with hash 837013, now seen corresponding path program 1 times [2022-12-13 11:53:59,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:53:59,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884507815] [2022-12-13 11:53:59,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:53:59,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:53:59,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:53:59,806 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:53:59,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:53:59,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884507815] [2022-12-13 11:53:59,806 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884507815] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:53:59,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1407910362] [2022-12-13 11:53:59,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:53:59,807 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:53:59,807 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0102581-0a7d-471f-b898-7f26a5b1cfa8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:53:59,808 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0102581-0a7d-471f-b898-7f26a5b1cfa8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:53:59,809 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0102581-0a7d-471f-b898-7f26a5b1cfa8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 11:53:59,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:53:59,863 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 11:53:59,866 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:53:59,893 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:53:59,893 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:53:59,904 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:53:59,904 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1407910362] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:53:59,904 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:53:59,904 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2022-12-13 11:53:59,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861139154] [2022-12-13 11:53:59,905 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:53:59,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 11:53:59,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:53:59,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 11:53:59,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-12-13 11:53:59,960 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 358 [2022-12-13 11:53:59,962 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 28 transitions, 90 flow. Second operand has 7 states, 7 states have (on average 159.14285714285714) internal successors, (1114), 7 states have internal predecessors, (1114), 0 states have call successors, (0), 0 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 11:53:59,962 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:53:59,962 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 358 [2022-12-13 11:53:59,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:54:00,249 INFO L130 PetriNetUnfolder]: 700/1069 cut-off events. [2022-12-13 11:54:00,249 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2022-12-13 11:54:00,251 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2201 conditions, 1069 events. 700/1069 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 5121 event pairs, 311 based on Foata normal form. 0/452 useless extension candidates. Maximal degree in co-relation 1703. Up to 216 conditions per place. [2022-12-13 11:54:00,256 INFO L137 encePairwiseOnDemand]: 350/358 looper letters, 80 selfloop transitions, 21 changer transitions 0/103 dead transitions. [2022-12-13 11:54:00,256 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 103 transitions, 494 flow [2022-12-13 11:54:00,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 11:54:00,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 11:54:00,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1213 transitions. [2022-12-13 11:54:00,261 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.48403830806065445 [2022-12-13 11:54:00,261 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1213 transitions. [2022-12-13 11:54:00,261 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1213 transitions. [2022-12-13 11:54:00,262 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:54:00,262 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1213 transitions. [2022-12-13 11:54:00,265 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 173.28571428571428) internal successors, (1213), 7 states have internal predecessors, (1213), 0 states have call successors, (0), 0 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 11:54:00,271 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 358.0) internal successors, (2864), 8 states have internal predecessors, (2864), 0 states have call successors, (0), 0 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 11:54:00,272 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 358.0) internal successors, (2864), 8 states have internal predecessors, (2864), 0 states have call successors, (0), 0 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 11:54:00,272 INFO L175 Difference]: Start difference. First operand has 29 places, 28 transitions, 90 flow. Second operand 7 states and 1213 transitions. [2022-12-13 11:54:00,272 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 103 transitions, 494 flow [2022-12-13 11:54:00,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 103 transitions, 480 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 11:54:00,274 INFO L231 Difference]: Finished difference. Result has 36 places, 43 transitions, 221 flow [2022-12-13 11:54:00,275 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=358, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=221, PETRI_PLACES=36, PETRI_TRANSITIONS=43} [2022-12-13 11:54:00,275 INFO L288 CegarLoopForPetriNet]: 28 programPoint places, 8 predicate places. [2022-12-13 11:54:00,275 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 43 transitions, 221 flow [2022-12-13 11:54:00,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 159.14285714285714) internal successors, (1114), 7 states have internal predecessors, (1114), 0 states have call successors, (0), 0 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 11:54:00,276 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:54:00,276 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1] [2022-12-13 11:54:00,282 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0102581-0a7d-471f-b898-7f26a5b1cfa8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 11:54:00,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0102581-0a7d-471f-b898-7f26a5b1cfa8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:54:00,477 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-12-13 11:54:00,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:54:00,479 INFO L85 PathProgramCache]: Analyzing trace with hash 25948888, now seen corresponding path program 1 times [2022-12-13 11:54:00,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:54:00,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141600938] [2022-12-13 11:54:00,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:54:00,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:54:00,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:54:00,648 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 11:54:00,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:54:00,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141600938] [2022-12-13 11:54:00,649 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141600938] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:54:00,649 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:54:00,649 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 11:54:00,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690292798] [2022-12-13 11:54:00,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:54:00,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:54:00,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:54:00,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:54:00,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:54:00,666 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 358 [2022-12-13 11:54:00,667 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 43 transitions, 221 flow. Second operand has 3 states, 3 states have (on average 159.33333333333334) internal successors, (478), 3 states have internal predecessors, (478), 0 states have call successors, (0), 0 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 11:54:00,667 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:54:00,667 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 358 [2022-12-13 11:54:00,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:54:00,797 INFO L130 PetriNetUnfolder]: 726/1093 cut-off events. [2022-12-13 11:54:00,797 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-12-13 11:54:00,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2271 conditions, 1093 events. 726/1093 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 5282 event pairs, 315 based on Foata normal form. 2/458 useless extension candidates. Maximal degree in co-relation 1343. Up to 1068 conditions per place. [2022-12-13 11:54:00,802 INFO L137 encePairwiseOnDemand]: 355/358 looper letters, 32 selfloop transitions, 1 changer transitions 0/35 dead transitions. [2022-12-13 11:54:00,802 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 35 transitions, 233 flow [2022-12-13 11:54:00,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:54:00,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 11:54:00,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 497 transitions. [2022-12-13 11:54:00,803 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.462756052141527 [2022-12-13 11:54:00,803 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 497 transitions. [2022-12-13 11:54:00,803 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 497 transitions. [2022-12-13 11:54:00,804 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:54:00,804 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 497 transitions. [2022-12-13 11:54:00,805 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 165.66666666666666) internal successors, (497), 3 states have internal predecessors, (497), 0 states have call successors, (0), 0 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 11:54:00,806 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 358.0) internal successors, (1432), 4 states have internal predecessors, (1432), 0 states have call successors, (0), 0 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 11:54:00,806 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 358.0) internal successors, (1432), 4 states have internal predecessors, (1432), 0 states have call successors, (0), 0 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 11:54:00,806 INFO L175 Difference]: Start difference. First operand has 36 places, 43 transitions, 221 flow. Second operand 3 states and 497 transitions. [2022-12-13 11:54:00,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 35 transitions, 233 flow [2022-12-13 11:54:00,808 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 35 transitions, 214 flow, removed 6 selfloop flow, removed 1 redundant places. [2022-12-13 11:54:00,808 INFO L231 Difference]: Finished difference. Result has 34 places, 35 transitions, 150 flow [2022-12-13 11:54:00,809 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=358, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=150, PETRI_PLACES=34, PETRI_TRANSITIONS=35} [2022-12-13 11:54:00,809 INFO L288 CegarLoopForPetriNet]: 28 programPoint places, 6 predicate places. [2022-12-13 11:54:00,809 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 35 transitions, 150 flow [2022-12-13 11:54:00,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 159.33333333333334) internal successors, (478), 3 states have internal predecessors, (478), 0 states have call successors, (0), 0 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 11:54:00,810 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:54:00,810 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2022-12-13 11:54:00,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 11:54:00,810 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-12-13 11:54:00,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:54:00,810 INFO L85 PathProgramCache]: Analyzing trace with hash -832859000, now seen corresponding path program 2 times [2022-12-13 11:54:00,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:54:00,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936625077] [2022-12-13 11:54:00,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:54:00,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:54:00,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:54:00,913 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:54:00,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:54:00,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936625077] [2022-12-13 11:54:00,913 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936625077] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:54:00,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1995757154] [2022-12-13 11:54:00,914 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 11:54:00,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:54:00,914 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0102581-0a7d-471f-b898-7f26a5b1cfa8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:54:00,915 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0102581-0a7d-471f-b898-7f26a5b1cfa8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:54:00,916 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0102581-0a7d-471f-b898-7f26a5b1cfa8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 11:54:00,960 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-13 11:54:00,961 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:54:00,962 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 11:54:00,963 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:54:00,975 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-13 11:54:00,975 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 11:54:00,975 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1995757154] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:54:00,975 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 11:54:00,975 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2022-12-13 11:54:00,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111532416] [2022-12-13 11:54:00,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:54:00,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:54:00,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:54:00,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:54:00,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-12-13 11:54:00,991 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 358 [2022-12-13 11:54:00,991 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 35 transitions, 150 flow. Second operand has 3 states, 3 states have (on average 161.0) internal successors, (483), 3 states have internal predecessors, (483), 0 states have call successors, (0), 0 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 11:54:00,991 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:54:00,991 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 358 [2022-12-13 11:54:00,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:54:01,126 INFO L130 PetriNetUnfolder]: 726/1092 cut-off events. [2022-12-13 11:54:01,126 INFO L131 PetriNetUnfolder]: For 11/11 co-relation queries the response was YES. [2022-12-13 11:54:01,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2256 conditions, 1092 events. 726/1092 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 5260 event pairs, 315 based on Foata normal form. 1/457 useless extension candidates. Maximal degree in co-relation 2244. Up to 1062 conditions per place. [2022-12-13 11:54:01,130 INFO L137 encePairwiseOnDemand]: 355/358 looper letters, 26 selfloop transitions, 6 changer transitions 0/34 dead transitions. [2022-12-13 11:54:01,130 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 34 transitions, 204 flow [2022-12-13 11:54:01,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:54:01,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 11:54:01,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 501 transitions. [2022-12-13 11:54:01,131 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4664804469273743 [2022-12-13 11:54:01,131 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 501 transitions. [2022-12-13 11:54:01,132 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 501 transitions. [2022-12-13 11:54:01,132 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:54:01,132 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 501 transitions. [2022-12-13 11:54:01,133 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 167.0) internal successors, (501), 3 states have internal predecessors, (501), 0 states have call successors, (0), 0 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 11:54:01,134 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 358.0) internal successors, (1432), 4 states have internal predecessors, (1432), 0 states have call successors, (0), 0 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 11:54:01,134 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 358.0) internal successors, (1432), 4 states have internal predecessors, (1432), 0 states have call successors, (0), 0 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 11:54:01,134 INFO L175 Difference]: Start difference. First operand has 34 places, 35 transitions, 150 flow. Second operand 3 states and 501 transitions. [2022-12-13 11:54:01,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 34 transitions, 204 flow [2022-12-13 11:54:01,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 34 transitions, 203 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 11:54:01,136 INFO L231 Difference]: Finished difference. Result has 34 places, 34 transitions, 151 flow [2022-12-13 11:54:01,136 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=358, PETRI_DIFFERENCE_MINUEND_FLOW=139, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=151, PETRI_PLACES=34, PETRI_TRANSITIONS=34} [2022-12-13 11:54:01,137 INFO L288 CegarLoopForPetriNet]: 28 programPoint places, 6 predicate places. [2022-12-13 11:54:01,137 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 34 transitions, 151 flow [2022-12-13 11:54:01,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 161.0) internal successors, (483), 3 states have internal predecessors, (483), 0 states have call successors, (0), 0 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 11:54:01,137 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:54:01,137 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-13 11:54:01,142 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0102581-0a7d-471f-b898-7f26a5b1cfa8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 11:54:01,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0102581-0a7d-471f-b898-7f26a5b1cfa8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:54:01,338 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-12-13 11:54:01,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:54:01,339 INFO L85 PathProgramCache]: Analyzing trace with hash -829759502, now seen corresponding path program 1 times [2022-12-13 11:54:01,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:54:01,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505980145] [2022-12-13 11:54:01,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:54:01,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:54:01,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:54:01,386 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 11:54:01,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:54:01,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505980145] [2022-12-13 11:54:01,387 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505980145] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:54:01,387 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:54:01,387 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 11:54:01,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934044255] [2022-12-13 11:54:01,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:54:01,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:54:01,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:54:01,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:54:01,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:54:01,395 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 358 [2022-12-13 11:54:01,396 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 34 transitions, 151 flow. Second operand has 3 states, 3 states have (on average 164.0) internal successors, (492), 3 states have internal predecessors, (492), 0 states have call successors, (0), 0 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 11:54:01,396 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:54:01,396 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 358 [2022-12-13 11:54:01,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:54:01,578 INFO L130 PetriNetUnfolder]: 911/1447 cut-off events. [2022-12-13 11:54:01,579 INFO L131 PetriNetUnfolder]: For 26/26 co-relation queries the response was YES. [2022-12-13 11:54:01,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3007 conditions, 1447 events. 911/1447 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 7811 event pairs, 215 based on Foata normal form. 0/712 useless extension candidates. Maximal degree in co-relation 2994. Up to 963 conditions per place. [2022-12-13 11:54:01,583 INFO L137 encePairwiseOnDemand]: 354/358 looper letters, 42 selfloop transitions, 2 changer transitions 0/45 dead transitions. [2022-12-13 11:54:01,583 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 45 transitions, 264 flow [2022-12-13 11:54:01,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:54:01,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 11:54:01,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 520 transitions. [2022-12-13 11:54:01,584 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.48417132216014896 [2022-12-13 11:54:01,584 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 520 transitions. [2022-12-13 11:54:01,584 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 520 transitions. [2022-12-13 11:54:01,585 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:54:01,585 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 520 transitions. [2022-12-13 11:54:01,585 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 173.33333333333334) internal successors, (520), 3 states have internal predecessors, (520), 0 states have call successors, (0), 0 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 11:54:01,586 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 358.0) internal successors, (1432), 4 states have internal predecessors, (1432), 0 states have call successors, (0), 0 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 11:54:01,587 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 358.0) internal successors, (1432), 4 states have internal predecessors, (1432), 0 states have call successors, (0), 0 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 11:54:01,587 INFO L175 Difference]: Start difference. First operand has 34 places, 34 transitions, 151 flow. Second operand 3 states and 520 transitions. [2022-12-13 11:54:01,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 45 transitions, 264 flow [2022-12-13 11:54:01,588 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 45 transitions, 252 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 11:54:01,588 INFO L231 Difference]: Finished difference. Result has 35 places, 35 transitions, 153 flow [2022-12-13 11:54:01,588 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=358, PETRI_DIFFERENCE_MINUEND_FLOW=139, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=153, PETRI_PLACES=35, PETRI_TRANSITIONS=35} [2022-12-13 11:54:01,589 INFO L288 CegarLoopForPetriNet]: 28 programPoint places, 7 predicate places. [2022-12-13 11:54:01,589 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 35 transitions, 153 flow [2022-12-13 11:54:01,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 164.0) internal successors, (492), 3 states have internal predecessors, (492), 0 states have call successors, (0), 0 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 11:54:01,589 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:54:01,589 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:54:01,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 11:54:01,589 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-12-13 11:54:01,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:54:01,590 INFO L85 PathProgramCache]: Analyzing trace with hash 47261081, now seen corresponding path program 1 times [2022-12-13 11:54:01,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:54:01,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990842345] [2022-12-13 11:54:01,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:54:01,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:54:01,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:54:01,623 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:54:01,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:54:01,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990842345] [2022-12-13 11:54:01,623 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990842345] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:54:01,623 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:54:01,623 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 11:54:01,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770123217] [2022-12-13 11:54:01,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:54:01,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:54:01,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:54:01,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:54:01,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:54:01,631 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 358 [2022-12-13 11:54:01,631 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 35 transitions, 153 flow. Second operand has 3 states, 3 states have (on average 164.33333333333334) internal successors, (493), 3 states have internal predecessors, (493), 0 states have call successors, (0), 0 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 11:54:01,632 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:54:01,632 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 358 [2022-12-13 11:54:01,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:54:01,783 INFO L130 PetriNetUnfolder]: 836/1312 cut-off events. [2022-12-13 11:54:01,783 INFO L131 PetriNetUnfolder]: For 278/278 co-relation queries the response was YES. [2022-12-13 11:54:01,784 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3022 conditions, 1312 events. 836/1312 cut-off events. For 278/278 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 6513 event pairs, 255 based on Foata normal form. 0/786 useless extension candidates. Maximal degree in co-relation 3009. Up to 1190 conditions per place. [2022-12-13 11:54:01,787 INFO L137 encePairwiseOnDemand]: 356/358 looper letters, 39 selfloop transitions, 1 changer transitions 0/41 dead transitions. [2022-12-13 11:54:01,787 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 41 transitions, 245 flow [2022-12-13 11:54:01,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:54:01,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 11:54:01,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 514 transitions. [2022-12-13 11:54:01,789 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.478584729981378 [2022-12-13 11:54:01,789 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 514 transitions. [2022-12-13 11:54:01,789 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 514 transitions. [2022-12-13 11:54:01,789 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:54:01,789 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 514 transitions. [2022-12-13 11:54:01,790 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 171.33333333333334) internal successors, (514), 3 states have internal predecessors, (514), 0 states have call successors, (0), 0 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 11:54:01,791 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 358.0) internal successors, (1432), 4 states have internal predecessors, (1432), 0 states have call successors, (0), 0 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 11:54:01,791 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 358.0) internal successors, (1432), 4 states have internal predecessors, (1432), 0 states have call successors, (0), 0 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 11:54:01,791 INFO L175 Difference]: Start difference. First operand has 35 places, 35 transitions, 153 flow. Second operand 3 states and 514 transitions. [2022-12-13 11:54:01,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 41 transitions, 245 flow [2022-12-13 11:54:01,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 41 transitions, 243 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 11:54:01,792 INFO L231 Difference]: Finished difference. Result has 35 places, 34 transitions, 149 flow [2022-12-13 11:54:01,792 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=358, PETRI_DIFFERENCE_MINUEND_FLOW=147, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=149, PETRI_PLACES=35, PETRI_TRANSITIONS=34} [2022-12-13 11:54:01,793 INFO L288 CegarLoopForPetriNet]: 28 programPoint places, 7 predicate places. [2022-12-13 11:54:01,793 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 34 transitions, 149 flow [2022-12-13 11:54:01,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 164.33333333333334) internal successors, (493), 3 states have internal predecessors, (493), 0 states have call successors, (0), 0 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 11:54:01,793 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:54:01,793 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:54:01,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 11:54:01,793 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-12-13 11:54:01,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:54:01,794 INFO L85 PathProgramCache]: Analyzing trace with hash 47261098, now seen corresponding path program 1 times [2022-12-13 11:54:01,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:54:01,794 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840246668] [2022-12-13 11:54:01,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:54:01,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:54:01,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:54:01,835 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:54:01,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:54:01,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840246668] [2022-12-13 11:54:01,835 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840246668] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:54:01,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1482191285] [2022-12-13 11:54:01,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:54:01,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:54:01,836 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0102581-0a7d-471f-b898-7f26a5b1cfa8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:54:01,837 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0102581-0a7d-471f-b898-7f26a5b1cfa8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:54:01,837 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0102581-0a7d-471f-b898-7f26a5b1cfa8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 11:54:01,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:54:01,905 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 11:54:01,907 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:54:01,933 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:54:01,933 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 11:54:01,933 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1482191285] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:54:01,933 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 11:54:01,933 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [3] total 6 [2022-12-13 11:54:01,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127531725] [2022-12-13 11:54:01,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:54:01,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 11:54:01,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:54:01,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 11:54:01,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 11:54:01,974 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 358 [2022-12-13 11:54:01,975 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 34 transitions, 149 flow. Second operand has 4 states, 4 states have (on average 155.5) internal successors, (622), 4 states have internal predecessors, (622), 0 states have call successors, (0), 0 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 11:54:01,975 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:54:01,975 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 358 [2022-12-13 11:54:01,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:54:02,118 INFO L130 PetriNetUnfolder]: 523/882 cut-off events. [2022-12-13 11:54:02,119 INFO L131 PetriNetUnfolder]: For 100/144 co-relation queries the response was YES. [2022-12-13 11:54:02,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1975 conditions, 882 events. 523/882 cut-off events. For 100/144 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 4636 event pairs, 297 based on Foata normal form. 49/597 useless extension candidates. Maximal degree in co-relation 1962. Up to 829 conditions per place. [2022-12-13 11:54:02,121 INFO L137 encePairwiseOnDemand]: 351/358 looper letters, 26 selfloop transitions, 6 changer transitions 9/43 dead transitions. [2022-12-13 11:54:02,122 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 43 transitions, 253 flow [2022-12-13 11:54:02,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 11:54:02,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 11:54:02,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 649 transitions. [2022-12-13 11:54:02,123 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.45321229050279327 [2022-12-13 11:54:02,123 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 649 transitions. [2022-12-13 11:54:02,123 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 649 transitions. [2022-12-13 11:54:02,123 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:54:02,123 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 649 transitions. [2022-12-13 11:54:02,124 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 162.25) internal successors, (649), 4 states have internal predecessors, (649), 0 states have call successors, (0), 0 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 11:54:02,125 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 358.0) internal successors, (1790), 5 states have internal predecessors, (1790), 0 states have call successors, (0), 0 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 11:54:02,126 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 358.0) internal successors, (1790), 5 states have internal predecessors, (1790), 0 states have call successors, (0), 0 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 11:54:02,126 INFO L175 Difference]: Start difference. First operand has 35 places, 34 transitions, 149 flow. Second operand 4 states and 649 transitions. [2022-12-13 11:54:02,126 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 43 transitions, 253 flow [2022-12-13 11:54:02,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 43 transitions, 252 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 11:54:02,127 INFO L231 Difference]: Finished difference. Result has 39 places, 34 transitions, 176 flow [2022-12-13 11:54:02,127 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=358, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=176, PETRI_PLACES=39, PETRI_TRANSITIONS=34} [2022-12-13 11:54:02,127 INFO L288 CegarLoopForPetriNet]: 28 programPoint places, 11 predicate places. [2022-12-13 11:54:02,128 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 34 transitions, 176 flow [2022-12-13 11:54:02,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 155.5) internal successors, (622), 4 states have internal predecessors, (622), 0 states have call successors, (0), 0 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 11:54:02,128 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:54:02,128 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1] [2022-12-13 11:54:02,133 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0102581-0a7d-471f-b898-7f26a5b1cfa8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 11:54:02,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0102581-0a7d-471f-b898-7f26a5b1cfa8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:54:02,329 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-12-13 11:54:02,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:54:02,330 INFO L85 PathProgramCache]: Analyzing trace with hash 47561108, now seen corresponding path program 1 times [2022-12-13 11:54:02,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:54:02,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267699211] [2022-12-13 11:54:02,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:54:02,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:54:02,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:54:02,509 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:54:02,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:54:02,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267699211] [2022-12-13 11:54:02,510 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267699211] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:54:02,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1553529608] [2022-12-13 11:54:02,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:54:02,510 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:54:02,510 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0102581-0a7d-471f-b898-7f26a5b1cfa8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:54:02,511 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0102581-0a7d-471f-b898-7f26a5b1cfa8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:54:02,512 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0102581-0a7d-471f-b898-7f26a5b1cfa8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 11:54:02,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:54:02,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-13 11:54:02,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:54:02,591 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:54:02,591 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:54:02,636 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:54:02,637 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1553529608] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:54:02,637 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:54:02,637 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2022-12-13 11:54:02,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550257444] [2022-12-13 11:54:02,637 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:54:02,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-13 11:54:02,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:54:02,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-13 11:54:02,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-12-13 11:54:02,722 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 358 [2022-12-13 11:54:02,724 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 34 transitions, 176 flow. Second operand has 13 states, 13 states have (on average 159.15384615384616) internal successors, (2069), 13 states have internal predecessors, (2069), 0 states have call successors, (0), 0 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 11:54:02,725 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:54:02,725 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 358 [2022-12-13 11:54:02,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:54:03,193 INFO L130 PetriNetUnfolder]: 1282/2125 cut-off events. [2022-12-13 11:54:03,193 INFO L131 PetriNetUnfolder]: For 588/688 co-relation queries the response was YES. [2022-12-13 11:54:03,194 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5588 conditions, 2125 events. 1282/2125 cut-off events. For 588/688 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 12191 event pairs, 720 based on Foata normal form. 106/1639 useless extension candidates. Maximal degree in co-relation 5573. Up to 831 conditions per place. [2022-12-13 11:54:03,199 INFO L137 encePairwiseOnDemand]: 353/358 looper letters, 154 selfloop transitions, 31 changer transitions 0/187 dead transitions. [2022-12-13 11:54:03,200 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 187 transitions, 1116 flow [2022-12-13 11:54:03,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 11:54:03,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-12-13 11:54:03,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2077 transitions. [2022-12-13 11:54:03,203 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4834729981378026 [2022-12-13 11:54:03,203 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2077 transitions. [2022-12-13 11:54:03,203 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2077 transitions. [2022-12-13 11:54:03,203 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:54:03,203 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2077 transitions. [2022-12-13 11:54:03,206 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 173.08333333333334) internal successors, (2077), 12 states have internal predecessors, (2077), 0 states have call successors, (0), 0 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 11:54:03,209 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 358.0) internal successors, (4654), 13 states have internal predecessors, (4654), 0 states have call successors, (0), 0 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 11:54:03,210 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 358.0) internal successors, (4654), 13 states have internal predecessors, (4654), 0 states have call successors, (0), 0 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 11:54:03,210 INFO L175 Difference]: Start difference. First operand has 39 places, 34 transitions, 176 flow. Second operand 12 states and 2077 transitions. [2022-12-13 11:54:03,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 187 transitions, 1116 flow [2022-12-13 11:54:03,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 187 transitions, 1102 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-12-13 11:54:03,213 INFO L231 Difference]: Finished difference. Result has 54 places, 52 transitions, 390 flow [2022-12-13 11:54:03,213 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=358, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=390, PETRI_PLACES=54, PETRI_TRANSITIONS=52} [2022-12-13 11:54:03,213 INFO L288 CegarLoopForPetriNet]: 28 programPoint places, 26 predicate places. [2022-12-13 11:54:03,213 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 52 transitions, 390 flow [2022-12-13 11:54:03,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 159.15384615384616) internal successors, (2069), 13 states have internal predecessors, (2069), 0 states have call successors, (0), 0 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 11:54:03,214 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:54:03,214 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:54:03,219 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0102581-0a7d-471f-b898-7f26a5b1cfa8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 11:54:03,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0102581-0a7d-471f-b898-7f26a5b1cfa8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:54:03,415 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-12-13 11:54:03,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:54:03,415 INFO L85 PathProgramCache]: Analyzing trace with hash 1474095160, now seen corresponding path program 1 times [2022-12-13 11:54:03,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:54:03,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937773019] [2022-12-13 11:54:03,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:54:03,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:54:03,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:54:03,457 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 11:54:03,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:54:03,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937773019] [2022-12-13 11:54:03,457 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937773019] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:54:03,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [703057504] [2022-12-13 11:54:03,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:54:03,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:54:03,458 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0102581-0a7d-471f-b898-7f26a5b1cfa8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:54:03,459 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0102581-0a7d-471f-b898-7f26a5b1cfa8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:54:03,459 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0102581-0a7d-471f-b898-7f26a5b1cfa8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 11:54:03,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:54:03,526 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 11:54:03,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:54:03,563 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 11:54:03,563 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 11:54:03,564 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [703057504] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:54:03,564 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 11:54:03,564 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 6 [2022-12-13 11:54:03,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398116085] [2022-12-13 11:54:03,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:54:03,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 11:54:03,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:54:03,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 11:54:03,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 11:54:03,607 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 358 [2022-12-13 11:54:03,607 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 52 transitions, 390 flow. Second operand has 4 states, 4 states have (on average 155.75) internal successors, (623), 4 states have internal predecessors, (623), 0 states have call successors, (0), 0 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 11:54:03,608 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:54:03,608 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 358 [2022-12-13 11:54:03,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:54:03,874 INFO L130 PetriNetUnfolder]: 1372/2427 cut-off events. [2022-12-13 11:54:03,874 INFO L131 PetriNetUnfolder]: For 835/985 co-relation queries the response was YES. [2022-12-13 11:54:03,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6352 conditions, 2427 events. 1372/2427 cut-off events. For 835/985 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 15775 event pairs, 810 based on Foata normal form. 270/2107 useless extension candidates. Maximal degree in co-relation 6330. Up to 2074 conditions per place. [2022-12-13 11:54:03,882 INFO L137 encePairwiseOnDemand]: 350/358 looper letters, 58 selfloop transitions, 4 changer transitions 9/73 dead transitions. [2022-12-13 11:54:03,883 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 73 transitions, 677 flow [2022-12-13 11:54:03,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 11:54:03,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 11:54:03,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 807 transitions. [2022-12-13 11:54:03,884 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.45083798882681564 [2022-12-13 11:54:03,884 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 807 transitions. [2022-12-13 11:54:03,884 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 807 transitions. [2022-12-13 11:54:03,885 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:54:03,885 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 807 transitions. [2022-12-13 11:54:03,886 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 161.4) internal successors, (807), 5 states have internal predecessors, (807), 0 states have call successors, (0), 0 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 11:54:03,887 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 358.0) internal successors, (2148), 6 states have internal predecessors, (2148), 0 states have call successors, (0), 0 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 11:54:03,887 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 358.0) internal successors, (2148), 6 states have internal predecessors, (2148), 0 states have call successors, (0), 0 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 11:54:03,887 INFO L175 Difference]: Start difference. First operand has 54 places, 52 transitions, 390 flow. Second operand 5 states and 807 transitions. [2022-12-13 11:54:03,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 73 transitions, 677 flow [2022-12-13 11:54:03,889 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 73 transitions, 553 flow, removed 39 selfloop flow, removed 5 redundant places. [2022-12-13 11:54:03,890 INFO L231 Difference]: Finished difference. Result has 55 places, 53 transitions, 327 flow [2022-12-13 11:54:03,890 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=358, PETRI_DIFFERENCE_MINUEND_FLOW=300, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=327, PETRI_PLACES=55, PETRI_TRANSITIONS=53} [2022-12-13 11:54:03,891 INFO L288 CegarLoopForPetriNet]: 28 programPoint places, 27 predicate places. [2022-12-13 11:54:03,891 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 53 transitions, 327 flow [2022-12-13 11:54:03,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 155.75) internal successors, (623), 4 states have internal predecessors, (623), 0 states have call successors, (0), 0 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 11:54:03,891 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:54:03,891 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:54:03,897 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0102581-0a7d-471f-b898-7f26a5b1cfa8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-13 11:54:04,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0102581-0a7d-471f-b898-7f26a5b1cfa8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-12-13 11:54:04,093 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-12-13 11:54:04,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:54:04,093 INFO L85 PathProgramCache]: Analyzing trace with hash -982247739, now seen corresponding path program 1 times [2022-12-13 11:54:04,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:54:04,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879059696] [2022-12-13 11:54:04,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:54:04,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:54:04,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:54:04,246 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 11:54:04,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:54:04,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879059696] [2022-12-13 11:54:04,247 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879059696] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:54:04,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [533999980] [2022-12-13 11:54:04,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:54:04,248 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:54:04,248 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0102581-0a7d-471f-b898-7f26a5b1cfa8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:54:04,249 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0102581-0a7d-471f-b898-7f26a5b1cfa8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:54:04,251 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0102581-0a7d-471f-b898-7f26a5b1cfa8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 11:54:04,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:54:04,319 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 11:54:04,320 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:54:04,326 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 11:54:04,326 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:54:04,338 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 11:54:04,339 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [533999980] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:54:04,339 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:54:04,339 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-12-13 11:54:04,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363387337] [2022-12-13 11:54:04,339 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:54:04,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 11:54:04,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:54:04,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 11:54:04,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-12-13 11:54:04,357 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 358 [2022-12-13 11:54:04,359 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 53 transitions, 327 flow. Second operand has 7 states, 7 states have (on average 164.0) internal successors, (1148), 7 states have internal predecessors, (1148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:54:04,359 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:54:04,359 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 358 [2022-12-13 11:54:04,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:54:04,994 INFO L130 PetriNetUnfolder]: 3612/5837 cut-off events. [2022-12-13 11:54:04,994 INFO L131 PetriNetUnfolder]: For 2215/2215 co-relation queries the response was YES. [2022-12-13 11:54:05,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17368 conditions, 5837 events. 3612/5837 cut-off events. For 2215/2215 co-relation queries the response was YES. Maximal size of possible extension queue 376. Compared 38802 event pairs, 420 based on Foata normal form. 0/4407 useless extension candidates. Maximal degree in co-relation 17344. Up to 2101 conditions per place. [2022-12-13 11:54:05,015 INFO L137 encePairwiseOnDemand]: 355/358 looper letters, 90 selfloop transitions, 5 changer transitions 0/96 dead transitions. [2022-12-13 11:54:05,016 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 96 transitions, 669 flow [2022-12-13 11:54:05,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 11:54:05,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 11:54:05,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1039 transitions. [2022-12-13 11:54:05,018 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.48370577281191807 [2022-12-13 11:54:05,018 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1039 transitions. [2022-12-13 11:54:05,019 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1039 transitions. [2022-12-13 11:54:05,019 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:54:05,019 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1039 transitions. [2022-12-13 11:54:05,021 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 173.16666666666666) internal successors, (1039), 6 states have internal predecessors, (1039), 0 states have call successors, (0), 0 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 11:54:05,024 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 358.0) internal successors, (2506), 7 states have internal predecessors, (2506), 0 states have call successors, (0), 0 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 11:54:05,024 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 358.0) internal successors, (2506), 7 states have internal predecessors, (2506), 0 states have call successors, (0), 0 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 11:54:05,024 INFO L175 Difference]: Start difference. First operand has 55 places, 53 transitions, 327 flow. Second operand 6 states and 1039 transitions. [2022-12-13 11:54:05,025 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 96 transitions, 669 flow [2022-12-13 11:54:05,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 96 transitions, 617 flow, removed 18 selfloop flow, removed 3 redundant places. [2022-12-13 11:54:05,031 INFO L231 Difference]: Finished difference. Result has 60 places, 56 transitions, 335 flow [2022-12-13 11:54:05,032 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=358, PETRI_DIFFERENCE_MINUEND_FLOW=299, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=335, PETRI_PLACES=60, PETRI_TRANSITIONS=56} [2022-12-13 11:54:05,032 INFO L288 CegarLoopForPetriNet]: 28 programPoint places, 32 predicate places. [2022-12-13 11:54:05,032 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 56 transitions, 335 flow [2022-12-13 11:54:05,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 164.0) internal successors, (1148), 7 states have internal predecessors, (1148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:54:05,033 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:54:05,033 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:54:05,037 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0102581-0a7d-471f-b898-7f26a5b1cfa8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-12-13 11:54:05,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0102581-0a7d-471f-b898-7f26a5b1cfa8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-12-13 11:54:05,234 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-12-13 11:54:05,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:54:05,235 INFO L85 PathProgramCache]: Analyzing trace with hash -380083725, now seen corresponding path program 1 times [2022-12-13 11:54:05,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:54:05,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366805061] [2022-12-13 11:54:05,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:54:05,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:54:05,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:54:05,292 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 11:54:05,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:54:05,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366805061] [2022-12-13 11:54:05,292 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366805061] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:54:05,292 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:54:05,292 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 11:54:05,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074812901] [2022-12-13 11:54:05,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:54:05,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:54:05,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:54:05,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:54:05,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:54:05,299 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 358 [2022-12-13 11:54:05,299 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 56 transitions, 335 flow. Second operand has 3 states, 3 states have (on average 165.33333333333334) internal successors, (496), 3 states have internal predecessors, (496), 0 states have call successors, (0), 0 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 11:54:05,299 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:54:05,299 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 358 [2022-12-13 11:54:05,300 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:54:05,923 INFO L130 PetriNetUnfolder]: 3402/6157 cut-off events. [2022-12-13 11:54:05,923 INFO L131 PetriNetUnfolder]: For 4527/4927 co-relation queries the response was YES. [2022-12-13 11:54:05,932 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16946 conditions, 6157 events. 3402/6157 cut-off events. For 4527/4927 co-relation queries the response was YES. Maximal size of possible extension queue 302. Compared 44471 event pairs, 1970 based on Foata normal form. 400/5887 useless extension candidates. Maximal degree in co-relation 16921. Up to 4398 conditions per place. [2022-12-13 11:54:05,947 INFO L137 encePairwiseOnDemand]: 354/358 looper letters, 65 selfloop transitions, 2 changer transitions 0/68 dead transitions. [2022-12-13 11:54:05,947 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 68 transitions, 532 flow [2022-12-13 11:54:05,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:54:05,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 11:54:05,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 516 transitions. [2022-12-13 11:54:05,949 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.48044692737430167 [2022-12-13 11:54:05,949 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 516 transitions. [2022-12-13 11:54:05,949 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 516 transitions. [2022-12-13 11:54:05,949 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:54:05,949 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 516 transitions. [2022-12-13 11:54:05,950 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 172.0) internal successors, (516), 3 states have internal predecessors, (516), 0 states have call successors, (0), 0 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 11:54:05,951 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 358.0) internal successors, (1432), 4 states have internal predecessors, (1432), 0 states have call successors, (0), 0 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 11:54:05,952 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 358.0) internal successors, (1432), 4 states have internal predecessors, (1432), 0 states have call successors, (0), 0 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 11:54:05,952 INFO L175 Difference]: Start difference. First operand has 60 places, 56 transitions, 335 flow. Second operand 3 states and 516 transitions. [2022-12-13 11:54:05,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 68 transitions, 532 flow [2022-12-13 11:54:05,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 68 transitions, 517 flow, removed 6 selfloop flow, removed 1 redundant places. [2022-12-13 11:54:05,959 INFO L231 Difference]: Finished difference. Result has 62 places, 57 transitions, 343 flow [2022-12-13 11:54:05,959 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=358, PETRI_DIFFERENCE_MINUEND_FLOW=327, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=343, PETRI_PLACES=62, PETRI_TRANSITIONS=57} [2022-12-13 11:54:05,960 INFO L288 CegarLoopForPetriNet]: 28 programPoint places, 34 predicate places. [2022-12-13 11:54:05,960 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 57 transitions, 343 flow [2022-12-13 11:54:05,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 165.33333333333334) internal successors, (496), 3 states have internal predecessors, (496), 0 states have call successors, (0), 0 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 11:54:05,960 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:54:05,960 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:54:05,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 11:54:05,961 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-12-13 11:54:05,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:54:05,961 INFO L85 PathProgramCache]: Analyzing trace with hash 1102308638, now seen corresponding path program 1 times [2022-12-13 11:54:05,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:54:05,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487110388] [2022-12-13 11:54:05,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:54:05,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:54:05,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:54:05,993 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 11:54:05,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:54:05,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487110388] [2022-12-13 11:54:05,994 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487110388] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:54:05,994 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:54:05,994 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 11:54:05,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895661957] [2022-12-13 11:54:05,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:54:05,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:54:05,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:54:05,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:54:05,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:54:06,001 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 358 [2022-12-13 11:54:06,002 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 57 transitions, 343 flow. Second operand has 3 states, 3 states have (on average 165.66666666666666) internal successors, (497), 3 states have internal predecessors, (497), 0 states have call successors, (0), 0 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 11:54:06,002 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:54:06,002 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 358 [2022-12-13 11:54:06,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:54:06,516 INFO L130 PetriNetUnfolder]: 2972/5407 cut-off events. [2022-12-13 11:54:06,516 INFO L131 PetriNetUnfolder]: For 4467/4827 co-relation queries the response was YES. [2022-12-13 11:54:06,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15988 conditions, 5407 events. 2972/5407 cut-off events. For 4467/4827 co-relation queries the response was YES. Maximal size of possible extension queue 265. Compared 38648 event pairs, 330 based on Foata normal form. 360/5417 useless extension candidates. Maximal degree in co-relation 15961. Up to 4310 conditions per place. [2022-12-13 11:54:06,534 INFO L137 encePairwiseOnDemand]: 356/358 looper letters, 64 selfloop transitions, 1 changer transitions 0/66 dead transitions. [2022-12-13 11:54:06,534 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 66 transitions, 517 flow [2022-12-13 11:54:06,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:54:06,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 11:54:06,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 512 transitions. [2022-12-13 11:54:06,535 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4767225325884544 [2022-12-13 11:54:06,535 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 512 transitions. [2022-12-13 11:54:06,535 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 512 transitions. [2022-12-13 11:54:06,535 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:54:06,535 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 512 transitions. [2022-12-13 11:54:06,536 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 170.66666666666666) internal successors, (512), 3 states have internal predecessors, (512), 0 states have call successors, (0), 0 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 11:54:06,537 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 358.0) internal successors, (1432), 4 states have internal predecessors, (1432), 0 states have call successors, (0), 0 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 11:54:06,537 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 358.0) internal successors, (1432), 4 states have internal predecessors, (1432), 0 states have call successors, (0), 0 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 11:54:06,537 INFO L175 Difference]: Start difference. First operand has 62 places, 57 transitions, 343 flow. Second operand 3 states and 512 transitions. [2022-12-13 11:54:06,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 66 transitions, 517 flow [2022-12-13 11:54:06,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 66 transitions, 515 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 11:54:06,548 INFO L231 Difference]: Finished difference. Result has 62 places, 56 transitions, 337 flow [2022-12-13 11:54:06,548 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=358, PETRI_DIFFERENCE_MINUEND_FLOW=335, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=337, PETRI_PLACES=62, PETRI_TRANSITIONS=56} [2022-12-13 11:54:06,548 INFO L288 CegarLoopForPetriNet]: 28 programPoint places, 34 predicate places. [2022-12-13 11:54:06,549 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 56 transitions, 337 flow [2022-12-13 11:54:06,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 165.66666666666666) internal successors, (497), 3 states have internal predecessors, (497), 0 states have call successors, (0), 0 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 11:54:06,549 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:54:06,549 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:54:06,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-13 11:54:06,549 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-12-13 11:54:06,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:54:06,550 INFO L85 PathProgramCache]: Analyzing trace with hash 1102308662, now seen corresponding path program 1 times [2022-12-13 11:54:06,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:54:06,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825071085] [2022-12-13 11:54:06,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:54:06,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:54:06,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:54:06,588 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 11:54:06,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:54:06,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825071085] [2022-12-13 11:54:06,588 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825071085] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:54:06,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1519240055] [2022-12-13 11:54:06,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:54:06,588 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:54:06,588 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0102581-0a7d-471f-b898-7f26a5b1cfa8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:54:06,589 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0102581-0a7d-471f-b898-7f26a5b1cfa8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:54:06,590 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0102581-0a7d-471f-b898-7f26a5b1cfa8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-13 11:54:06,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:54:06,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 11:54:06,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:54:06,669 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 11:54:06,669 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:54:06,679 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 11:54:06,680 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1519240055] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:54:06,680 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:54:06,680 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-12-13 11:54:06,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947188948] [2022-12-13 11:54:06,680 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:54:06,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 11:54:06,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:54:06,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 11:54:06,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-12-13 11:54:06,693 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 358 [2022-12-13 11:54:06,694 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 56 transitions, 337 flow. Second operand has 7 states, 7 states have (on average 164.28571428571428) internal successors, (1150), 7 states have internal predecessors, (1150), 0 states have call successors, (0), 0 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 11:54:06,694 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:54:06,694 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 358 [2022-12-13 11:54:06,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:54:07,746 INFO L130 PetriNetUnfolder]: 5552/9907 cut-off events. [2022-12-13 11:54:07,746 INFO L131 PetriNetUnfolder]: For 8237/8837 co-relation queries the response was YES. [2022-12-13 11:54:07,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28768 conditions, 9907 events. 5552/9907 cut-off events. For 8237/8837 co-relation queries the response was YES. Maximal size of possible extension queue 440. Compared 75065 event pairs, 1560 based on Foata normal form. 600/10157 useless extension candidates. Maximal degree in co-relation 28741. Up to 3648 conditions per place. [2022-12-13 11:54:07,774 INFO L137 encePairwiseOnDemand]: 355/358 looper letters, 97 selfloop transitions, 5 changer transitions 0/103 dead transitions. [2022-12-13 11:54:07,774 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 103 transitions, 767 flow [2022-12-13 11:54:07,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 11:54:07,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 11:54:07,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1026 transitions. [2022-12-13 11:54:07,776 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4776536312849162 [2022-12-13 11:54:07,776 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1026 transitions. [2022-12-13 11:54:07,776 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1026 transitions. [2022-12-13 11:54:07,776 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:54:07,776 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1026 transitions. [2022-12-13 11:54:07,777 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 171.0) internal successors, (1026), 6 states have internal predecessors, (1026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:54:07,778 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 358.0) internal successors, (2506), 7 states have internal predecessors, (2506), 0 states have call successors, (0), 0 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 11:54:07,779 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 358.0) internal successors, (2506), 7 states have internal predecessors, (2506), 0 states have call successors, (0), 0 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 11:54:07,779 INFO L175 Difference]: Start difference. First operand has 62 places, 56 transitions, 337 flow. Second operand 6 states and 1026 transitions. [2022-12-13 11:54:07,779 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 103 transitions, 767 flow [2022-12-13 11:54:07,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 103 transitions, 766 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 11:54:07,793 INFO L231 Difference]: Finished difference. Result has 69 places, 59 transitions, 378 flow [2022-12-13 11:54:07,793 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=358, PETRI_DIFFERENCE_MINUEND_FLOW=336, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=378, PETRI_PLACES=69, PETRI_TRANSITIONS=59} [2022-12-13 11:54:07,793 INFO L288 CegarLoopForPetriNet]: 28 programPoint places, 41 predicate places. [2022-12-13 11:54:07,793 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 59 transitions, 378 flow [2022-12-13 11:54:07,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 164.28571428571428) internal successors, (1150), 7 states have internal predecessors, (1150), 0 states have call successors, (0), 0 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 11:54:07,794 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:54:07,794 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:54:07,798 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0102581-0a7d-471f-b898-7f26a5b1cfa8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-13 11:54:07,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0102581-0a7d-471f-b898-7f26a5b1cfa8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-12-13 11:54:07,995 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-12-13 11:54:07,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:54:07,995 INFO L85 PathProgramCache]: Analyzing trace with hash -528857400, now seen corresponding path program 2 times [2022-12-13 11:54:07,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:54:07,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221336567] [2022-12-13 11:54:07,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:54:07,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:54:08,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:54:08,089 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 11:54:08,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:54:08,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221336567] [2022-12-13 11:54:08,090 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221336567] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:54:08,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1699318485] [2022-12-13 11:54:08,090 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 11:54:08,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:54:08,090 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0102581-0a7d-471f-b898-7f26a5b1cfa8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:54:08,091 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0102581-0a7d-471f-b898-7f26a5b1cfa8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:54:08,092 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0102581-0a7d-471f-b898-7f26a5b1cfa8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-13 11:54:08,163 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-13 11:54:08,163 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:54:08,164 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 11:54:08,165 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:54:08,178 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-13 11:54:08,178 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 11:54:08,178 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1699318485] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:54:08,178 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 11:54:08,179 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [6] total 7 [2022-12-13 11:54:08,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135099540] [2022-12-13 11:54:08,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:54:08,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:54:08,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:54:08,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:54:08,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-12-13 11:54:08,185 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 358 [2022-12-13 11:54:08,186 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 59 transitions, 378 flow. Second operand has 3 states, 3 states have (on average 164.66666666666666) internal successors, (494), 3 states have internal predecessors, (494), 0 states have call successors, (0), 0 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 11:54:08,186 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:54:08,186 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 358 [2022-12-13 11:54:08,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:54:09,067 INFO L130 PetriNetUnfolder]: 4312/7797 cut-off events. [2022-12-13 11:54:09,067 INFO L131 PetriNetUnfolder]: For 10827/11767 co-relation queries the response was YES. [2022-12-13 11:54:09,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23951 conditions, 7797 events. 4312/7797 cut-off events. For 10827/11767 co-relation queries the response was YES. Maximal size of possible extension queue 407. Compared 59855 event pairs, 3780 based on Foata normal form. 1460/9127 useless extension candidates. Maximal degree in co-relation 23921. Up to 7727 conditions per place. [2022-12-13 11:54:09,083 INFO L137 encePairwiseOnDemand]: 355/358 looper letters, 35 selfloop transitions, 1 changer transitions 21/57 dead transitions. [2022-12-13 11:54:09,083 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 57 transitions, 466 flow [2022-12-13 11:54:09,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:54:09,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 11:54:09,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 504 transitions. [2022-12-13 11:54:09,085 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4692737430167598 [2022-12-13 11:54:09,085 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 504 transitions. [2022-12-13 11:54:09,085 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 504 transitions. [2022-12-13 11:54:09,085 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:54:09,085 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 504 transitions. [2022-12-13 11:54:09,086 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 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 11:54:09,087 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 358.0) internal successors, (1432), 4 states have internal predecessors, (1432), 0 states have call successors, (0), 0 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 11:54:09,087 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 358.0) internal successors, (1432), 4 states have internal predecessors, (1432), 0 states have call successors, (0), 0 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 11:54:09,087 INFO L175 Difference]: Start difference. First operand has 69 places, 59 transitions, 378 flow. Second operand 3 states and 504 transitions. [2022-12-13 11:54:09,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 57 transitions, 466 flow [2022-12-13 11:54:09,111 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 57 transitions, 438 flow, removed 5 selfloop flow, removed 9 redundant places. [2022-12-13 11:54:09,112 INFO L231 Difference]: Finished difference. Result has 60 places, 36 transitions, 244 flow [2022-12-13 11:54:09,112 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=358, PETRI_DIFFERENCE_MINUEND_FLOW=328, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=244, PETRI_PLACES=60, PETRI_TRANSITIONS=36} [2022-12-13 11:54:09,112 INFO L288 CegarLoopForPetriNet]: 28 programPoint places, 32 predicate places. [2022-12-13 11:54:09,112 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 36 transitions, 244 flow [2022-12-13 11:54:09,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 164.66666666666666) internal successors, (494), 3 states have internal predecessors, (494), 0 states have call successors, (0), 0 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 11:54:09,113 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:54:09,113 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1] [2022-12-13 11:54:09,117 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0102581-0a7d-471f-b898-7f26a5b1cfa8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-12-13 11:54:09,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0102581-0a7d-471f-b898-7f26a5b1cfa8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-12-13 11:54:09,314 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-12-13 11:54:09,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:54:09,314 INFO L85 PathProgramCache]: Analyzing trace with hash 1852989140, now seen corresponding path program 2 times [2022-12-13 11:54:09,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:54:09,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104479634] [2022-12-13 11:54:09,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:54:09,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:54:09,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:54:09,436 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:54:09,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:54:09,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104479634] [2022-12-13 11:54:09,437 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104479634] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:54:09,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1833226530] [2022-12-13 11:54:09,437 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 11:54:09,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:54:09,437 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0102581-0a7d-471f-b898-7f26a5b1cfa8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:54:09,438 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0102581-0a7d-471f-b898-7f26a5b1cfa8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:54:09,439 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0102581-0a7d-471f-b898-7f26a5b1cfa8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-13 11:54:09,507 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-13 11:54:09,507 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:54:09,508 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 11:54:09,509 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:54:09,534 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-12-13 11:54:09,535 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 11:54:09,535 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1833226530] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:54:09,535 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 11:54:09,535 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [12] total 14 [2022-12-13 11:54:09,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945936453] [2022-12-13 11:54:09,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:54:09,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 11:54:09,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:54:09,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 11:54:09,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=128, Unknown=0, NotChecked=0, Total=210 [2022-12-13 11:54:09,558 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 358 [2022-12-13 11:54:09,559 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 36 transitions, 244 flow. Second operand has 4 states, 4 states have (on average 159.0) internal successors, (636), 4 states have internal predecessors, (636), 0 states have call successors, (0), 0 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 11:54:09,559 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:54:09,559 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 358 [2022-12-13 11:54:09,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:54:09,579 INFO L130 PetriNetUnfolder]: 12/45 cut-off events. [2022-12-13 11:54:09,580 INFO L131 PetriNetUnfolder]: For 87/87 co-relation queries the response was YES. [2022-12-13 11:54:09,580 INFO L83 FinitePrefix]: Finished finitePrefix Result has 201 conditions, 45 events. 12/45 cut-off events. For 87/87 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 68 event pairs, 0 based on Foata normal form. 2/47 useless extension candidates. Maximal degree in co-relation 182. Up to 45 conditions per place. [2022-12-13 11:54:09,580 INFO L137 encePairwiseOnDemand]: 356/358 looper letters, 0 selfloop transitions, 0 changer transitions 35/35 dead transitions. [2022-12-13 11:54:09,580 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 35 transitions, 292 flow [2022-12-13 11:54:09,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:54:09,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 11:54:09,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 479 transitions. [2022-12-13 11:54:09,582 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44599627560521415 [2022-12-13 11:54:09,582 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 479 transitions. [2022-12-13 11:54:09,582 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 479 transitions. [2022-12-13 11:54:09,582 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:54:09,582 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 479 transitions. [2022-12-13 11:54:09,583 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 159.66666666666666) internal successors, (479), 3 states have internal predecessors, (479), 0 states have call successors, (0), 0 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 11:54:09,585 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 358.0) internal successors, (1432), 4 states have internal predecessors, (1432), 0 states have call successors, (0), 0 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 11:54:09,585 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 358.0) internal successors, (1432), 4 states have internal predecessors, (1432), 0 states have call successors, (0), 0 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 11:54:09,585 INFO L175 Difference]: Start difference. First operand has 60 places, 36 transitions, 244 flow. Second operand 3 states and 479 transitions. [2022-12-13 11:54:09,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 35 transitions, 292 flow [2022-12-13 11:54:09,586 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 35 transitions, 213 flow, removed 2 selfloop flow, removed 13 redundant places. [2022-12-13 11:54:09,587 INFO L231 Difference]: Finished difference. Result has 24 places, 0 transitions, 0 flow [2022-12-13 11:54:09,587 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=358, PETRI_DIFFERENCE_MINUEND_FLOW=143, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=24, PETRI_TRANSITIONS=0} [2022-12-13 11:54:09,587 INFO L288 CegarLoopForPetriNet]: 28 programPoint places, -4 predicate places. [2022-12-13 11:54:09,587 INFO L495 AbstractCegarLoop]: Abstraction has has 24 places, 0 transitions, 0 flow [2022-12-13 11:54:09,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 159.0) internal successors, (636), 4 states have internal predecessors, (636), 0 states have call successors, (0), 0 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 11:54:09,590 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 14 remaining) [2022-12-13 11:54:09,590 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 14 remaining) [2022-12-13 11:54:09,591 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 14 remaining) [2022-12-13 11:54:09,591 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 14 remaining) [2022-12-13 11:54:09,591 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 14 remaining) [2022-12-13 11:54:09,591 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 14 remaining) [2022-12-13 11:54:09,591 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 14 remaining) [2022-12-13 11:54:09,591 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 14 remaining) [2022-12-13 11:54:09,591 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 14 remaining) [2022-12-13 11:54:09,591 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 14 remaining) [2022-12-13 11:54:09,591 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 14 remaining) [2022-12-13 11:54:09,592 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 14 remaining) [2022-12-13 11:54:09,592 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 14 remaining) [2022-12-13 11:54:09,592 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 14 remaining) [2022-12-13 11:54:09,597 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0102581-0a7d-471f-b898-7f26a5b1cfa8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-12-13 11:54:09,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0102581-0a7d-471f-b898-7f26a5b1cfa8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-12-13 11:54:09,793 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:54:09,805 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-13 11:54:09,806 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 11:54:09,814 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 11:54:09 BasicIcfg [2022-12-13 11:54:09,814 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 11:54:09,815 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 11:54:09,815 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 11:54:09,816 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 11:54:09,817 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 11:53:53" (3/4) ... [2022-12-13 11:54:09,823 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-12-13 11:54:09,835 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-12-13 11:54:09,836 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-12-13 11:54:09,846 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 24 nodes and edges [2022-12-13 11:54:09,847 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-12-13 11:54:09,847 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-12-13 11:54:09,848 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-12-13 11:54:09,917 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0102581-0a7d-471f-b898-7f26a5b1cfa8/bin/uautomizer-uyxdKDjOR8/witness.graphml [2022-12-13 11:54:09,918 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 11:54:09,918 INFO L158 Benchmark]: Toolchain (without parser) took 16790.54ms. Allocated memory was 144.7MB in the beginning and 790.6MB in the end (delta: 645.9MB). Free memory was 108.6MB in the beginning and 270.7MB in the end (delta: -162.0MB). Peak memory consumption was 485.3MB. Max. memory is 16.1GB. [2022-12-13 11:54:09,919 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 144.7MB. Free memory is still 115.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 11:54:09,919 INFO L158 Benchmark]: CACSL2BoogieTranslator took 223.17ms. Allocated memory is still 144.7MB. Free memory was 108.6MB in the beginning and 96.6MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-12-13 11:54:09,919 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.99ms. Allocated memory is still 144.7MB. Free memory was 96.6MB in the beginning and 94.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 11:54:09,920 INFO L158 Benchmark]: Boogie Preprocessor took 25.76ms. Allocated memory is still 144.7MB. Free memory was 94.5MB in the beginning and 92.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 11:54:09,920 INFO L158 Benchmark]: RCFGBuilder took 497.30ms. Allocated memory is still 144.7MB. Free memory was 92.8MB in the beginning and 58.3MB in the end (delta: 34.5MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2022-12-13 11:54:09,921 INFO L158 Benchmark]: TraceAbstraction took 15896.71ms. Allocated memory was 144.7MB in the beginning and 790.6MB in the end (delta: 645.9MB). Free memory was 57.7MB in the beginning and 274.8MB in the end (delta: -217.2MB). Peak memory consumption was 432.9MB. Max. memory is 16.1GB. [2022-12-13 11:54:09,921 INFO L158 Benchmark]: Witness Printer took 102.75ms. Allocated memory is still 790.6MB. Free memory was 274.8MB in the beginning and 270.7MB in the end (delta: 4.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 11:54:09,923 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 144.7MB. Free memory is still 115.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 223.17ms. Allocated memory is still 144.7MB. Free memory was 108.6MB in the beginning and 96.6MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 38.99ms. Allocated memory is still 144.7MB. Free memory was 96.6MB in the beginning and 94.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 25.76ms. Allocated memory is still 144.7MB. Free memory was 94.5MB in the beginning and 92.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 497.30ms. Allocated memory is still 144.7MB. Free memory was 92.8MB in the beginning and 58.3MB in the end (delta: 34.5MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * TraceAbstraction took 15896.71ms. Allocated memory was 144.7MB in the beginning and 790.6MB in the end (delta: 645.9MB). Free memory was 57.7MB in the beginning and 274.8MB in the end (delta: -217.2MB). Peak memory consumption was 432.9MB. Max. memory is 16.1GB. * Witness Printer took 102.75ms. Allocated memory is still 790.6MB. Free memory was 274.8MB in the beginning and 270.7MB in the end (delta: 4.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.1s, 154 PlacesBefore, 28 PlacesAfterwards, 159 TransitionsBefore, 25 TransitionsAfterwards, 812 CoEnabledTransitionPairs, 7 FixpointIterations, 114 TrivialSequentialCompositions, 29 ConcurrentSequentialCompositions, 23 TrivialYvCompositions, 4 ConcurrentYvCompositions, 8 ChoiceCompositions, 178 TotalNumberOfCompositions, 855 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 774, independent: 761, independent conditional: 0, independent unconditional: 761, dependent: 13, dependent conditional: 0, dependent unconditional: 13, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 435, independent: 429, independent conditional: 0, independent unconditional: 429, dependent: 6, dependent conditional: 0, dependent unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 774, independent: 332, independent conditional: 0, independent unconditional: 332, dependent: 7, dependent conditional: 0, dependent unconditional: 7, unknown: 435, unknown conditional: 0, unknown unconditional: 435] , Statistics on independence cache: Total cache size (in pairs): 22, Positive cache size: 21, Positive conditional cache size: 0, Positive unconditional cache size: 21, Negative cache size: 1, Negative conditional cache size: 0, Negative unconditional cache size: 1, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 47]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 47]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 60]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 60]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 98]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 98]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 98]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 98]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 196 locations, 14 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 15.8s, OverallIterations: 15, TraceHistogramMax: 10, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 6.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1117 SdHoareTripleChecker+Valid, 1.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 855 mSDsluCounter, 50 SdHoareTripleChecker+Invalid, 1.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 19 mSDsCounter, 165 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1441 IncrementalHoareTripleChecker+Invalid, 1606 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 165 mSolverCounterUnsat, 31 mSDtfsCounter, 1441 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 150 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=390occurred in iteration=8, InterpolantAutomatonStates: 67, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 192 NumberOfCodeBlocks, 172 NumberOfCodeBlocksAsserted, 24 NumberOfCheckSat, 194 ConstructedInterpolants, 0 QuantifiedInterpolants, 435 SizeOfPredicates, 12 NumberOfNonLiveVariables, 1386 ConjunctsInSsa, 47 ConjunctsInUnsatCore, 28 InterpolantComputations, 11 PerfectInterpolantSequences, 104/220 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-12-13 11:54:09,938 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0102581-0a7d-471f-b898-7f26a5b1cfa8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE