./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/unroll-cond-3.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e04fb08f 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_0ee1d8bb-9ccd-4f66-a3c4-3b6157e96a33/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ee1d8bb-9ccd-4f66-a3c4-3b6157e96a33/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ee1d8bb-9ccd-4f66-a3c4-3b6157e96a33/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ee1d8bb-9ccd-4f66-a3c4-3b6157e96a33/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/unroll-cond-3.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ee1d8bb-9ccd-4f66-a3c4-3b6157e96a33/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ee1d8bb-9ccd-4f66-a3c4-3b6157e96a33/bin/uautomizer-tPACEb0tL8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 95e3bac7f28ae020b684175cea363a5866905518c289fbd40a07a7a3764acade --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 11:22:28,404 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:22:28,407 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:22:28,445 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:22:28,446 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:22:28,449 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:22:28,452 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:22:28,454 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:22:28,455 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:22:28,456 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:22:28,457 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:22:28,458 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:22:28,458 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:22:28,459 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:22:28,460 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:22:28,462 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:22:28,462 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:22:28,472 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:22:28,475 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:22:28,483 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:22:28,486 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:22:28,488 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:22:28,492 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:22:28,493 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:22:28,502 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:22:28,502 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:22:28,502 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:22:28,504 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:22:28,505 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:22:28,506 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:22:28,507 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:22:28,508 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:22:28,509 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:22:28,511 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:22:28,513 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:22:28,513 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:22:28,514 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:22:28,514 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:22:28,514 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:22:28,515 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:22:28,515 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:22:28,516 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ee1d8bb-9ccd-4f66-a3c4-3b6157e96a33/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-16 11:22:28,556 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:22:28,557 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:22:28,557 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:22:28,557 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:22:28,558 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 11:22:28,559 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 11:22:28,559 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:22:28,559 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:22:28,560 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:22:28,560 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:22:28,561 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 11:22:28,561 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 11:22:28,561 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 11:22:28,561 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 11:22:28,561 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:22:28,562 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 11:22:28,562 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 11:22:28,562 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 11:22:28,562 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-16 11:22:28,562 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 11:22:28,562 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 11:22:28,563 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:22:28,563 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 11:22:28,563 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:22:28,563 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:22:28,563 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 11:22:28,565 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:22:28,565 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:22:28,565 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 11:22:28,566 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 11:22:28,566 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 11:22:28,566 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 11:22:28,566 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 11:22:28,566 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 11:22:28,567 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 11:22:28,567 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ee1d8bb-9ccd-4f66-a3c4-3b6157e96a33/bin/uautomizer-tPACEb0tL8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ee1d8bb-9ccd-4f66-a3c4-3b6157e96a33/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 95e3bac7f28ae020b684175cea363a5866905518c289fbd40a07a7a3764acade [2022-11-16 11:22:28,845 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:22:28,866 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:22:28,869 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:22:28,870 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:22:28,871 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:22:28,873 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ee1d8bb-9ccd-4f66-a3c4-3b6157e96a33/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/weaver/unroll-cond-3.wvr.c [2022-11-16 11:22:28,948 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ee1d8bb-9ccd-4f66-a3c4-3b6157e96a33/bin/uautomizer-tPACEb0tL8/data/87eaac47c/a64c597632df4baf84af86694df115e6/FLAG6b32ebce3 [2022-11-16 11:22:29,383 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:22:29,384 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ee1d8bb-9ccd-4f66-a3c4-3b6157e96a33/sv-benchmarks/c/weaver/unroll-cond-3.wvr.c [2022-11-16 11:22:29,396 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ee1d8bb-9ccd-4f66-a3c4-3b6157e96a33/bin/uautomizer-tPACEb0tL8/data/87eaac47c/a64c597632df4baf84af86694df115e6/FLAG6b32ebce3 [2022-11-16 11:22:29,764 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ee1d8bb-9ccd-4f66-a3c4-3b6157e96a33/bin/uautomizer-tPACEb0tL8/data/87eaac47c/a64c597632df4baf84af86694df115e6 [2022-11-16 11:22:29,767 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:22:29,769 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:22:29,775 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:22:29,775 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:22:29,778 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:22:29,779 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:22:29" (1/1) ... [2022-11-16 11:22:29,780 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41128ab2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:22:29, skipping insertion in model container [2022-11-16 11:22:29,780 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:22:29" (1/1) ... [2022-11-16 11:22:29,788 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:22:29,811 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:22:30,089 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ee1d8bb-9ccd-4f66-a3c4-3b6157e96a33/sv-benchmarks/c/weaver/unroll-cond-3.wvr.c[2641,2654] [2022-11-16 11:22:30,102 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:22:30,119 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 11:22:30,159 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ee1d8bb-9ccd-4f66-a3c4-3b6157e96a33/sv-benchmarks/c/weaver/unroll-cond-3.wvr.c[2641,2654] [2022-11-16 11:22:30,172 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:22:30,190 INFO L208 MainTranslator]: Completed translation [2022-11-16 11:22:30,191 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:22:30 WrapperNode [2022-11-16 11:22:30,191 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:22:30,192 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 11:22:30,192 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 11:22:30,192 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 11:22:30,200 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:22:30" (1/1) ... [2022-11-16 11:22:30,222 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:22:30" (1/1) ... [2022-11-16 11:22:30,256 INFO L138 Inliner]: procedures = 24, calls = 37, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 164 [2022-11-16 11:22:30,256 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 11:22:30,257 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 11:22:30,257 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 11:22:30,258 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 11:22:30,267 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:22:30" (1/1) ... [2022-11-16 11:22:30,267 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:22:30" (1/1) ... [2022-11-16 11:22:30,270 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:22:30" (1/1) ... [2022-11-16 11:22:30,270 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:22:30" (1/1) ... [2022-11-16 11:22:30,282 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:22:30" (1/1) ... [2022-11-16 11:22:30,287 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:22:30" (1/1) ... [2022-11-16 11:22:30,292 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:22:30" (1/1) ... [2022-11-16 11:22:30,293 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:22:30" (1/1) ... [2022-11-16 11:22:30,296 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 11:22:30,297 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 11:22:30,297 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 11:22:30,297 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 11:22:30,304 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:22:30" (1/1) ... [2022-11-16 11:22:30,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:22:30,329 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ee1d8bb-9ccd-4f66-a3c4-3b6157e96a33/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:22:30,343 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ee1d8bb-9ccd-4f66-a3c4-3b6157e96a33/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 11:22:30,351 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ee1d8bb-9ccd-4f66-a3c4-3b6157e96a33/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 11:22:30,381 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 11:22:30,382 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-16 11:22:30,382 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-16 11:22:30,383 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-16 11:22:30,383 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-16 11:22:30,392 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 11:22:30,393 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 11:22:30,393 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 11:22:30,393 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-16 11:22:30,393 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 11:22:30,393 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 11:22:30,394 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 11:22:30,394 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 11:22:30,396 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-16 11:22:30,496 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 11:22:30,499 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 11:22:30,994 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 11:22:31,012 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 11:22:31,013 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-16 11:22:31,015 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:22:31 BoogieIcfgContainer [2022-11-16 11:22:31,023 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 11:22:31,026 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 11:22:31,026 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 11:22:31,029 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 11:22:31,030 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:22:29" (1/3) ... [2022-11-16 11:22:31,030 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7575c355 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:22:31, skipping insertion in model container [2022-11-16 11:22:31,031 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:22:30" (2/3) ... [2022-11-16 11:22:31,031 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7575c355 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:22:31, skipping insertion in model container [2022-11-16 11:22:31,031 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:22:31" (3/3) ... [2022-11-16 11:22:31,032 INFO L112 eAbstractionObserver]: Analyzing ICFG unroll-cond-3.wvr.c [2022-11-16 11:22:31,041 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 11:22:31,056 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 11:22:31,056 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-16 11:22:31,056 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 11:22:31,198 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-16 11:22:31,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 201 places, 212 transitions, 440 flow [2022-11-16 11:22:31,321 INFO L130 PetriNetUnfolder]: 18/210 cut-off events. [2022-11-16 11:22:31,323 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-16 11:22:31,331 INFO L83 FinitePrefix]: Finished finitePrefix Result has 219 conditions, 210 events. 18/210 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 329 event pairs, 0 based on Foata normal form. 0/190 useless extension candidates. Maximal degree in co-relation 111. Up to 2 conditions per place. [2022-11-16 11:22:31,331 INFO L82 GeneralOperation]: Start removeDead. Operand has 201 places, 212 transitions, 440 flow [2022-11-16 11:22:31,341 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 65 places, 68 transitions, 136 flow [2022-11-16 11:22:31,356 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:22:31,363 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;@1393c6d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:22:31,363 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-11-16 11:22:31,383 INFO L130 PetriNetUnfolder]: 3/62 cut-off events. [2022-11-16 11:22:31,383 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 11:22:31,383 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:22:31,384 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:22:31,384 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 11:22:31,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:22:31,396 INFO L85 PathProgramCache]: Analyzing trace with hash -522401252, now seen corresponding path program 1 times [2022-11-16 11:22:31,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:22:31,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494374900] [2022-11-16 11:22:31,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:22:31,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:22:31,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:22:31,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:22:31,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:22:31,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494374900] [2022-11-16 11:22:31,846 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494374900] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:22:31,847 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:22:31,847 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:22:31,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709415989] [2022-11-16 11:22:31,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:22:31,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:22:31,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:22:31,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:22:31,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:22:31,923 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 182 out of 212 [2022-11-16 11:22:31,929 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 68 transitions, 136 flow. Second operand has 4 states, 4 states have (on average 183.5) internal successors, (734), 4 states have internal predecessors, (734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:22:31,933 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:22:31,933 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 182 of 212 [2022-11-16 11:22:31,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:22:32,019 INFO L130 PetriNetUnfolder]: 1/74 cut-off events. [2022-11-16 11:22:32,019 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 11:22:32,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94 conditions, 74 events. 1/74 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 6 event pairs, 0 based on Foata normal form. 3/72 useless extension candidates. Maximal degree in co-relation 0. Up to 12 conditions per place. [2022-11-16 11:22:32,021 INFO L137 encePairwiseOnDemand]: 203/212 looper letters, 14 selfloop transitions, 4 changer transitions 3/72 dead transitions. [2022-11-16 11:22:32,021 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 72 transitions, 180 flow [2022-11-16 11:22:32,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:22:32,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:22:32,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 933 transitions. [2022-11-16 11:22:32,040 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.880188679245283 [2022-11-16 11:22:32,041 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 933 transitions. [2022-11-16 11:22:32,041 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 933 transitions. [2022-11-16 11:22:32,044 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:22:32,047 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 933 transitions. [2022-11-16 11:22:32,054 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 186.6) internal successors, (933), 5 states have internal predecessors, (933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:22:32,064 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 212.0) internal successors, (1272), 6 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:22:32,065 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 212.0) internal successors, (1272), 6 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:22:32,067 INFO L175 Difference]: Start difference. First operand has 65 places, 68 transitions, 136 flow. Second operand 5 states and 933 transitions. [2022-11-16 11:22:32,068 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 72 transitions, 180 flow [2022-11-16 11:22:32,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 72 transitions, 180 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 11:22:32,074 INFO L231 Difference]: Finished difference. Result has 72 places, 65 transitions, 154 flow [2022-11-16 11:22:32,076 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=154, PETRI_PLACES=72, PETRI_TRANSITIONS=65} [2022-11-16 11:22:32,079 INFO L288 CegarLoopForPetriNet]: 65 programPoint places, 7 predicate places. [2022-11-16 11:22:32,080 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 65 transitions, 154 flow [2022-11-16 11:22:32,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 183.5) internal successors, (734), 4 states have internal predecessors, (734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:22:32,081 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:22:32,081 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:22:32,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 11:22:32,082 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 11:22:32,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:22:32,083 INFO L85 PathProgramCache]: Analyzing trace with hash -460816918, now seen corresponding path program 1 times [2022-11-16 11:22:32,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:22:32,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421095463] [2022-11-16 11:22:32,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:22:32,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:22:32,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:22:32,257 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:22:32,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:22:32,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421095463] [2022-11-16 11:22:32,258 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421095463] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:22:32,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1925341667] [2022-11-16 11:22:32,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:22:32,259 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:22:32,260 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ee1d8bb-9ccd-4f66-a3c4-3b6157e96a33/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:22:32,267 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ee1d8bb-9ccd-4f66-a3c4-3b6157e96a33/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:22:32,291 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ee1d8bb-9ccd-4f66-a3c4-3b6157e96a33/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 11:22:32,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:22:32,398 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 11:22:32,405 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:22:32,485 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:22:32,485 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:22:32,549 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:22:32,550 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1925341667] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:22:32,550 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:22:32,550 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-16 11:22:32,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75079978] [2022-11-16 11:22:32,551 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:22:32,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 11:22:32,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:22:32,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 11:22:32,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-16 11:22:32,557 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 182 out of 212 [2022-11-16 11:22:32,560 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 65 transitions, 154 flow. Second operand has 12 states, 12 states have (on average 184.66666666666666) internal successors, (2216), 12 states have internal predecessors, (2216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:22:32,560 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:22:32,560 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 182 of 212 [2022-11-16 11:22:32,560 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:22:32,802 INFO L130 PetriNetUnfolder]: 1/100 cut-off events. [2022-11-16 11:22:32,803 INFO L131 PetriNetUnfolder]: For 11/11 co-relation queries the response was YES. [2022-11-16 11:22:32,803 INFO L83 FinitePrefix]: Finished finitePrefix Result has 170 conditions, 100 events. 1/100 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 11 event pairs, 0 based on Foata normal form. 3/103 useless extension candidates. Maximal degree in co-relation 88. Up to 11 conditions per place. [2022-11-16 11:22:32,804 INFO L137 encePairwiseOnDemand]: 205/212 looper letters, 23 selfloop transitions, 18 changer transitions 0/92 dead transitions. [2022-11-16 11:22:32,804 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 92 transitions, 312 flow [2022-11-16 11:22:32,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-16 11:22:32,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-16 11:22:32,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3320 transitions. [2022-11-16 11:22:32,813 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.870020964360587 [2022-11-16 11:22:32,813 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3320 transitions. [2022-11-16 11:22:32,813 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3320 transitions. [2022-11-16 11:22:32,816 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:22:32,816 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3320 transitions. [2022-11-16 11:22:32,824 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 184.44444444444446) internal successors, (3320), 18 states have internal predecessors, (3320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:22:32,832 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 212.0) internal successors, (4028), 19 states have internal predecessors, (4028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:22:32,835 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 212.0) internal successors, (4028), 19 states have internal predecessors, (4028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:22:32,835 INFO L175 Difference]: Start difference. First operand has 72 places, 65 transitions, 154 flow. Second operand 18 states and 3320 transitions. [2022-11-16 11:22:32,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 92 transitions, 312 flow [2022-11-16 11:22:32,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 92 transitions, 310 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:22:32,841 INFO L231 Difference]: Finished difference. Result has 89 places, 77 transitions, 258 flow [2022-11-16 11:22:32,841 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=258, PETRI_PLACES=89, PETRI_TRANSITIONS=77} [2022-11-16 11:22:32,842 INFO L288 CegarLoopForPetriNet]: 65 programPoint places, 24 predicate places. [2022-11-16 11:22:32,842 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 77 transitions, 258 flow [2022-11-16 11:22:32,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 184.66666666666666) internal successors, (2216), 12 states have internal predecessors, (2216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:22:32,845 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:22:32,845 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:22:32,855 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ee1d8bb-9ccd-4f66-a3c4-3b6157e96a33/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-16 11:22:33,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ee1d8bb-9ccd-4f66-a3c4-3b6157e96a33/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:22:33,050 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 11:22:33,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:22:33,051 INFO L85 PathProgramCache]: Analyzing trace with hash -1400422245, now seen corresponding path program 1 times [2022-11-16 11:22:33,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:22:33,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586981744] [2022-11-16 11:22:33,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:22:33,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:22:33,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:22:33,280 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:22:33,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:22:33,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586981744] [2022-11-16 11:22:33,281 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586981744] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:22:33,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [367405599] [2022-11-16 11:22:33,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:22:33,282 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:22:33,282 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ee1d8bb-9ccd-4f66-a3c4-3b6157e96a33/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:22:33,289 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ee1d8bb-9ccd-4f66-a3c4-3b6157e96a33/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:22:33,307 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ee1d8bb-9ccd-4f66-a3c4-3b6157e96a33/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 11:22:33,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:22:33,379 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 11:22:33,381 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:22:33,427 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:22:33,427 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:22:33,428 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [367405599] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:22:33,428 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:22:33,428 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-16 11:22:33,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358834137] [2022-11-16 11:22:33,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:22:33,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:22:33,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:22:33,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:22:33,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:22:33,432 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 182 out of 212 [2022-11-16 11:22:33,434 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 77 transitions, 258 flow. Second operand has 6 states, 6 states have (on average 184.33333333333334) internal successors, (1106), 6 states have internal predecessors, (1106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:22:33,434 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:22:33,434 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 182 of 212 [2022-11-16 11:22:33,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:22:33,510 INFO L130 PetriNetUnfolder]: 1/96 cut-off events. [2022-11-16 11:22:33,510 INFO L131 PetriNetUnfolder]: For 47/47 co-relation queries the response was YES. [2022-11-16 11:22:33,510 INFO L83 FinitePrefix]: Finished finitePrefix Result has 188 conditions, 96 events. 1/96 cut-off events. For 47/47 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 2 event pairs, 0 based on Foata normal form. 4/100 useless extension candidates. Maximal degree in co-relation 72. Up to 17 conditions per place. [2022-11-16 11:22:33,511 INFO L137 encePairwiseOnDemand]: 207/212 looper letters, 15 selfloop transitions, 11 changer transitions 0/77 dead transitions. [2022-11-16 11:22:33,511 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 77 transitions, 293 flow [2022-11-16 11:22:33,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:22:33,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 11:22:33,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1292 transitions. [2022-11-16 11:22:33,516 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8706199460916442 [2022-11-16 11:22:33,516 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1292 transitions. [2022-11-16 11:22:33,517 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1292 transitions. [2022-11-16 11:22:33,517 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:22:33,518 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1292 transitions. [2022-11-16 11:22:33,520 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 184.57142857142858) internal successors, (1292), 7 states have internal predecessors, (1292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:22:33,523 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 212.0) internal successors, (1696), 8 states have internal predecessors, (1696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:22:33,524 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 212.0) internal successors, (1696), 8 states have internal predecessors, (1696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:22:33,524 INFO L175 Difference]: Start difference. First operand has 89 places, 77 transitions, 258 flow. Second operand 7 states and 1292 transitions. [2022-11-16 11:22:33,524 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 77 transitions, 293 flow [2022-11-16 11:22:33,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 77 transitions, 261 flow, removed 11 selfloop flow, removed 5 redundant places. [2022-11-16 11:22:33,531 INFO L231 Difference]: Finished difference. Result has 85 places, 73 transitions, 221 flow [2022-11-16 11:22:33,531 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=199, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=221, PETRI_PLACES=85, PETRI_TRANSITIONS=73} [2022-11-16 11:22:33,533 INFO L288 CegarLoopForPetriNet]: 65 programPoint places, 20 predicate places. [2022-11-16 11:22:33,534 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 73 transitions, 221 flow [2022-11-16 11:22:33,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 184.33333333333334) internal successors, (1106), 6 states have internal predecessors, (1106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:22:33,535 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:22:33,535 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:22:33,541 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ee1d8bb-9ccd-4f66-a3c4-3b6157e96a33/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 11:22:33,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ee1d8bb-9ccd-4f66-a3c4-3b6157e96a33/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:22:33,741 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 11:22:33,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:22:33,741 INFO L85 PathProgramCache]: Analyzing trace with hash -392222308, now seen corresponding path program 2 times [2022-11-16 11:22:33,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:22:33,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861267391] [2022-11-16 11:22:33,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:22:33,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:22:33,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:22:34,045 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:22:34,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:22:34,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861267391] [2022-11-16 11:22:34,046 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861267391] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:22:34,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [865023094] [2022-11-16 11:22:34,047 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:22:34,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:22:34,047 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ee1d8bb-9ccd-4f66-a3c4-3b6157e96a33/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:22:34,048 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ee1d8bb-9ccd-4f66-a3c4-3b6157e96a33/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:22:34,071 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ee1d8bb-9ccd-4f66-a3c4-3b6157e96a33/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 11:22:34,145 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-16 11:22:34,146 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:22:34,153 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 11:22:34,160 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:22:34,372 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-16 11:22:34,373 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:22:34,577 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-16 11:22:34,578 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [865023094] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:22:34,578 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:22:34,578 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 17 [2022-11-16 11:22:34,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981313966] [2022-11-16 11:22:34,579 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:22:34,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-16 11:22:34,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:22:34,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-16 11:22:34,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2022-11-16 11:22:34,586 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 212 [2022-11-16 11:22:34,589 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 73 transitions, 221 flow. Second operand has 18 states, 18 states have (on average 168.72222222222223) internal successors, (3037), 18 states have internal predecessors, (3037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:22:34,589 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:22:34,589 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 212 [2022-11-16 11:22:34,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:22:35,124 INFO L130 PetriNetUnfolder]: 1/106 cut-off events. [2022-11-16 11:22:35,125 INFO L131 PetriNetUnfolder]: For 49/49 co-relation queries the response was YES. [2022-11-16 11:22:35,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 216 conditions, 106 events. 1/106 cut-off events. For 49/49 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 1 event pairs, 0 based on Foata normal form. 2/108 useless extension candidates. Maximal degree in co-relation 121. Up to 7 conditions per place. [2022-11-16 11:22:35,125 INFO L137 encePairwiseOnDemand]: 201/212 looper letters, 0 selfloop transitions, 0 changer transitions 96/96 dead transitions. [2022-11-16 11:22:35,125 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 96 transitions, 396 flow [2022-11-16 11:22:35,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-16 11:22:35,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-11-16 11:22:35,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 4018 transitions. [2022-11-16 11:22:35,134 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7897012578616353 [2022-11-16 11:22:35,134 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 4018 transitions. [2022-11-16 11:22:35,134 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 4018 transitions. [2022-11-16 11:22:35,136 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:22:35,136 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 4018 transitions. [2022-11-16 11:22:35,145 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 167.41666666666666) internal successors, (4018), 24 states have internal predecessors, (4018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:22:35,154 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 212.0) internal successors, (5300), 25 states have internal predecessors, (5300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:22:35,157 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 212.0) internal successors, (5300), 25 states have internal predecessors, (5300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:22:35,157 INFO L175 Difference]: Start difference. First operand has 85 places, 73 transitions, 221 flow. Second operand 24 states and 4018 transitions. [2022-11-16 11:22:35,157 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 96 transitions, 396 flow [2022-11-16 11:22:35,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 96 transitions, 371 flow, removed 0 selfloop flow, removed 9 redundant places. [2022-11-16 11:22:35,160 INFO L231 Difference]: Finished difference. Result has 98 places, 0 transitions, 0 flow [2022-11-16 11:22:35,160 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=189, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=0, PETRI_PLACES=98, PETRI_TRANSITIONS=0} [2022-11-16 11:22:35,161 INFO L288 CegarLoopForPetriNet]: 65 programPoint places, 33 predicate places. [2022-11-16 11:22:35,161 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 0 transitions, 0 flow [2022-11-16 11:22:35,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 168.72222222222223) internal successors, (3037), 18 states have internal predecessors, (3037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:22:35,165 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 4 remaining) [2022-11-16 11:22:35,165 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 4 remaining) [2022-11-16 11:22:35,166 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2022-11-16 11:22:35,166 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2022-11-16 11:22:35,176 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ee1d8bb-9ccd-4f66-a3c4-3b6157e96a33/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-16 11:22:35,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ee1d8bb-9ccd-4f66-a3c4-3b6157e96a33/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:22:35,371 INFO L444 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2022-11-16 11:22:35,374 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-16 11:22:35,375 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-16 11:22:35,380 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 11:22:35 BasicIcfg [2022-11-16 11:22:35,380 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-16 11:22:35,381 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-16 11:22:35,381 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-16 11:22:35,381 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-16 11:22:35,381 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:22:31" (3/4) ... [2022-11-16 11:22:35,384 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-16 11:22:35,391 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-11-16 11:22:35,391 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-11-16 11:22:35,397 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 21 nodes and edges [2022-11-16 11:22:35,397 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-16 11:22:35,397 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-16 11:22:35,398 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-16 11:22:35,459 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ee1d8bb-9ccd-4f66-a3c4-3b6157e96a33/bin/uautomizer-tPACEb0tL8/witness.graphml [2022-11-16 11:22:35,460 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-16 11:22:35,460 INFO L158 Benchmark]: Toolchain (without parser) took 5691.25ms. Allocated memory was 125.8MB in the beginning and 155.2MB in the end (delta: 29.4MB). Free memory was 86.0MB in the beginning and 94.8MB in the end (delta: -8.8MB). Peak memory consumption was 20.1MB. Max. memory is 16.1GB. [2022-11-16 11:22:35,461 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 125.8MB. Free memory was 102.6MB in the beginning and 102.4MB in the end (delta: 151.0kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 11:22:35,461 INFO L158 Benchmark]: CACSL2BoogieTranslator took 416.52ms. Allocated memory is still 125.8MB. Free memory was 85.8MB in the beginning and 97.9MB in the end (delta: -12.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-16 11:22:35,461 INFO L158 Benchmark]: Boogie Procedure Inliner took 64.77ms. Allocated memory is still 125.8MB. Free memory was 97.9MB in the beginning and 95.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 11:22:35,461 INFO L158 Benchmark]: Boogie Preprocessor took 38.74ms. Allocated memory is still 125.8MB. Free memory was 95.8MB in the beginning and 93.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 11:22:35,462 INFO L158 Benchmark]: RCFGBuilder took 726.72ms. Allocated memory is still 125.8MB. Free memory was 93.7MB in the beginning and 75.5MB in the end (delta: 18.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-11-16 11:22:35,462 INFO L158 Benchmark]: TraceAbstraction took 4354.78ms. Allocated memory was 125.8MB in the beginning and 155.2MB in the end (delta: 29.4MB). Free memory was 74.9MB in the beginning and 97.9MB in the end (delta: -23.1MB). Peak memory consumption was 8.1MB. Max. memory is 16.1GB. [2022-11-16 11:22:35,462 INFO L158 Benchmark]: Witness Printer took 79.02ms. Allocated memory is still 155.2MB. Free memory was 97.9MB in the beginning and 94.8MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-16 11:22:35,464 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 125.8MB. Free memory was 102.6MB in the beginning and 102.4MB in the end (delta: 151.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 416.52ms. Allocated memory is still 125.8MB. Free memory was 85.8MB in the beginning and 97.9MB in the end (delta: -12.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 64.77ms. Allocated memory is still 125.8MB. Free memory was 97.9MB in the beginning and 95.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 38.74ms. Allocated memory is still 125.8MB. Free memory was 95.8MB in the beginning and 93.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 726.72ms. Allocated memory is still 125.8MB. Free memory was 93.7MB in the beginning and 75.5MB in the end (delta: 18.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 4354.78ms. Allocated memory was 125.8MB in the beginning and 155.2MB in the end (delta: 29.4MB). Free memory was 74.9MB in the beginning and 97.9MB in the end (delta: -23.1MB). Peak memory consumption was 8.1MB. Max. memory is 16.1GB. * Witness Printer took 79.02ms. Allocated memory is still 155.2MB. Free memory was 97.9MB in the beginning and 94.8MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 109]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 109]: 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, 287 locations, 4 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: 4.1s, OverallIterations: 4, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 246 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 246 mSDsluCounter, 76 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 56 mSDsCounter, 20 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 243 IncrementalHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 20 mSolverCounterUnsat, 20 mSDtfsCounter, 243 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 440 GetRequests, 366 SyntacticMatches, 5 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 372 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=258occurred in iteration=2, InterpolantAutomatonStates: 54, 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, 0.2s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 509 NumberOfCodeBlocks, 473 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 659 ConstructedInterpolants, 0 QuantifiedInterpolants, 1193 SizeOfPredicates, 12 NumberOfNonLiveVariables, 424 ConjunctsInSsa, 17 ConjunctsInUnsatCore, 9 InterpolantComputations, 2 PerfectInterpolantSequences, 123/266 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 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-16 11:22:35,495 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ee1d8bb-9ccd-4f66-a3c4-3b6157e96a33/bin/uautomizer-tPACEb0tL8/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