./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-more-inc-subseq.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_8fe18449-bbdc-4df8-b44e-c2d8e6901638/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fe18449-bbdc-4df8-b44e-c2d8e6901638/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_8fe18449-bbdc-4df8-b44e-c2d8e6901638/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fe18449-bbdc-4df8-b44e-c2d8e6901638/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-inc-subseq.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fe18449-bbdc-4df8-b44e-c2d8e6901638/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_8fe18449-bbdc-4df8-b44e-c2d8e6901638/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 cd94157895dc71e9f24fce5dbc4a71d4e4b55c4da9be28372139a3001decae0a --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 12:48:15,468 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:48:15,471 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:48:15,509 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:48:15,511 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:48:15,515 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:48:15,517 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:48:15,520 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:48:15,523 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:48:15,525 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:48:15,526 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:48:15,528 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:48:15,529 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:48:15,534 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:48:15,535 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:48:15,537 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:48:15,538 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:48:15,540 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:48:15,542 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:48:15,546 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:48:15,548 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:48:15,549 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:48:15,551 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:48:15,552 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:48:15,561 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:48:15,562 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:48:15,563 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:48:15,564 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:48:15,565 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:48:15,567 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:48:15,567 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:48:15,568 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:48:15,570 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:48:15,571 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:48:15,573 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:48:15,573 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:48:15,574 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:48:15,574 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:48:15,574 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:48:15,576 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:48:15,576 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:48:15,577 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fe18449-bbdc-4df8-b44e-c2d8e6901638/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-16 12:48:15,639 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:48:15,639 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:48:15,640 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:48:15,640 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:48:15,641 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:48:15,641 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:48:15,642 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:48:15,642 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:48:15,642 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:48:15,642 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:48:15,643 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 12:48:15,644 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 12:48:15,644 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 12:48:15,644 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 12:48:15,644 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:48:15,645 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 12:48:15,645 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:48:15,645 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 12:48:15,645 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-16 12:48:15,646 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 12:48:15,646 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 12:48:15,646 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:48:15,646 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 12:48:15,647 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:48:15,647 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:48:15,647 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:48:15,647 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:48:15,648 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:48:15,648 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:48:15,648 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 12:48:15,648 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 12:48:15,649 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 12:48:15,649 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 12:48:15,649 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 12:48:15,650 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 12:48:15,650 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_8fe18449-bbdc-4df8-b44e-c2d8e6901638/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fe18449-bbdc-4df8-b44e-c2d8e6901638/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cd94157895dc71e9f24fce5dbc4a71d4e4b55c4da9be28372139a3001decae0a [2022-11-16 12:48:15,975 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:48:16,006 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:48:16,009 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:48:16,010 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:48:16,011 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:48:16,012 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fe18449-bbdc-4df8-b44e-c2d8e6901638/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/weaver/popl20-more-inc-subseq.wvr.c [2022-11-16 12:48:16,087 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fe18449-bbdc-4df8-b44e-c2d8e6901638/bin/uautomizer-tPACEb0tL8/data/e79e160c6/3fabf68e38a94dac817840e75647ade1/FLAG9b9def7c4 [2022-11-16 12:48:16,519 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:48:16,520 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fe18449-bbdc-4df8-b44e-c2d8e6901638/sv-benchmarks/c/weaver/popl20-more-inc-subseq.wvr.c [2022-11-16 12:48:16,526 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fe18449-bbdc-4df8-b44e-c2d8e6901638/bin/uautomizer-tPACEb0tL8/data/e79e160c6/3fabf68e38a94dac817840e75647ade1/FLAG9b9def7c4 [2022-11-16 12:48:16,906 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fe18449-bbdc-4df8-b44e-c2d8e6901638/bin/uautomizer-tPACEb0tL8/data/e79e160c6/3fabf68e38a94dac817840e75647ade1 [2022-11-16 12:48:16,910 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:48:16,912 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:48:16,915 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:48:16,915 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:48:16,920 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:48:16,920 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:48:16" (1/1) ... [2022-11-16 12:48:16,923 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6289164a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:48:16, skipping insertion in model container [2022-11-16 12:48:16,923 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:48:16" (1/1) ... [2022-11-16 12:48:16,930 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:48:16,954 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:48:17,180 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_8fe18449-bbdc-4df8-b44e-c2d8e6901638/sv-benchmarks/c/weaver/popl20-more-inc-subseq.wvr.c[2924,2937] [2022-11-16 12:48:17,185 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:48:17,193 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 12:48:17,215 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_8fe18449-bbdc-4df8-b44e-c2d8e6901638/sv-benchmarks/c/weaver/popl20-more-inc-subseq.wvr.c[2924,2937] [2022-11-16 12:48:17,218 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:48:17,231 INFO L208 MainTranslator]: Completed translation [2022-11-16 12:48:17,232 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:48:17 WrapperNode [2022-11-16 12:48:17,232 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:48:17,233 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 12:48:17,233 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 12:48:17,234 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 12:48:17,241 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:48:17" (1/1) ... [2022-11-16 12:48:17,248 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:48:17" (1/1) ... [2022-11-16 12:48:17,274 INFO L138 Inliner]: procedures = 24, calls = 45, calls flagged for inlining = 11, calls inlined = 13, statements flattened = 201 [2022-11-16 12:48:17,274 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 12:48:17,275 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 12:48:17,275 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 12:48:17,275 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 12:48:17,284 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:48:17" (1/1) ... [2022-11-16 12:48:17,284 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:48:17" (1/1) ... [2022-11-16 12:48:17,288 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:48:17" (1/1) ... [2022-11-16 12:48:17,288 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:48:17" (1/1) ... [2022-11-16 12:48:17,297 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:48:17" (1/1) ... [2022-11-16 12:48:17,302 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:48:17" (1/1) ... [2022-11-16 12:48:17,303 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:48:17" (1/1) ... [2022-11-16 12:48:17,305 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:48:17" (1/1) ... [2022-11-16 12:48:17,307 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 12:48:17,308 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 12:48:17,308 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 12:48:17,309 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 12:48:17,309 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:48:17" (1/1) ... [2022-11-16 12:48:17,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:48:17,348 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fe18449-bbdc-4df8-b44e-c2d8e6901638/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:48:17,363 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fe18449-bbdc-4df8-b44e-c2d8e6901638/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 12:48:17,390 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fe18449-bbdc-4df8-b44e-c2d8e6901638/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 12:48:17,416 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 12:48:17,416 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-16 12:48:17,416 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-16 12:48:17,417 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-16 12:48:17,417 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-16 12:48:17,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 12:48:17,419 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 12:48:17,420 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 12:48:17,420 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-16 12:48:17,420 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-16 12:48:17,420 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-16 12:48:17,420 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 12:48:17,421 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 12:48:17,421 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 12:48:17,421 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 12:48:17,422 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-16 12:48:17,525 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 12:48:17,527 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 12:48:17,981 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 12:48:18,107 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 12:48:18,107 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-16 12:48:18,110 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:48:18 BoogieIcfgContainer [2022-11-16 12:48:18,110 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 12:48:18,112 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 12:48:18,112 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 12:48:18,115 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 12:48:18,115 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:48:16" (1/3) ... [2022-11-16 12:48:18,116 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24509dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:48:18, skipping insertion in model container [2022-11-16 12:48:18,116 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:48:17" (2/3) ... [2022-11-16 12:48:18,116 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24509dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:48:18, skipping insertion in model container [2022-11-16 12:48:18,117 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:48:18" (3/3) ... [2022-11-16 12:48:18,118 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-inc-subseq.wvr.c [2022-11-16 12:48:18,126 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 12:48:18,135 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 12:48:18,135 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2022-11-16 12:48:18,136 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 12:48:18,242 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-16 12:48:18,299 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 194 places, 202 transitions, 420 flow [2022-11-16 12:48:18,394 INFO L130 PetriNetUnfolder]: 15/200 cut-off events. [2022-11-16 12:48:18,394 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-16 12:48:18,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 209 conditions, 200 events. 15/200 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 151 event pairs, 0 based on Foata normal form. 0/175 useless extension candidates. Maximal degree in co-relation 164. Up to 2 conditions per place. [2022-11-16 12:48:18,400 INFO L82 GeneralOperation]: Start removeDead. Operand has 194 places, 202 transitions, 420 flow [2022-11-16 12:48:18,406 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 174 places, 181 transitions, 371 flow [2022-11-16 12:48:18,416 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:48:18,423 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;@f8fd7b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:48:18,423 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2022-11-16 12:48:18,445 INFO L130 PetriNetUnfolder]: 3/73 cut-off events. [2022-11-16 12:48:18,446 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 12:48:18,446 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:48:18,447 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:48:18,447 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-16 12:48:18,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:48:18,453 INFO L85 PathProgramCache]: Analyzing trace with hash 440222467, now seen corresponding path program 1 times [2022-11-16 12:48:18,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:48:18,463 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901867000] [2022-11-16 12:48:18,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:48:18,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:48:18,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:48:18,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:48:18,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:48:18,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901867000] [2022-11-16 12:48:18,850 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901867000] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:48:18,850 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:48:18,850 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:48:18,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419060596] [2022-11-16 12:48:18,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:48:18,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:48:18,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:48:18,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:48:18,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:48:18,894 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 202 [2022-11-16 12:48:18,898 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 181 transitions, 371 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) [2022-11-16 12:48:18,898 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:48:18,898 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 202 [2022-11-16 12:48:18,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:48:19,210 INFO L130 PetriNetUnfolder]: 65/374 cut-off events. [2022-11-16 12:48:19,211 INFO L131 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2022-11-16 12:48:19,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 553 conditions, 374 events. 65/374 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1058 event pairs, 28 based on Foata normal form. 28/326 useless extension candidates. Maximal degree in co-relation 281. Up to 78 conditions per place. [2022-11-16 12:48:19,227 INFO L137 encePairwiseOnDemand]: 178/202 looper letters, 52 selfloop transitions, 9 changer transitions 5/197 dead transitions. [2022-11-16 12:48:19,227 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 197 transitions, 534 flow [2022-11-16 12:48:19,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:48:19,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 12:48:19,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 853 transitions. [2022-11-16 12:48:19,252 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8445544554455445 [2022-11-16 12:48:19,253 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 853 transitions. [2022-11-16 12:48:19,254 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 853 transitions. [2022-11-16 12:48:19,259 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:48:19,261 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 853 transitions. [2022-11-16 12:48:19,268 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 170.6) internal successors, (853), 5 states have internal predecessors, (853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:48:19,277 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 202.0) internal successors, (1212), 6 states have internal predecessors, (1212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:48:19,278 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 202.0) internal successors, (1212), 6 states have internal predecessors, (1212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:48:19,281 INFO L175 Difference]: Start difference. First operand has 174 places, 181 transitions, 371 flow. Second operand 5 states and 853 transitions. [2022-11-16 12:48:19,282 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 197 transitions, 534 flow [2022-11-16 12:48:19,287 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 197 transitions, 524 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 12:48:19,293 INFO L231 Difference]: Finished difference. Result has 176 places, 172 transitions, 401 flow [2022-11-16 12:48:19,295 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=344, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=401, PETRI_PLACES=176, PETRI_TRANSITIONS=172} [2022-11-16 12:48:19,301 INFO L288 CegarLoopForPetriNet]: 174 programPoint places, 2 predicate places. [2022-11-16 12:48:19,302 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 172 transitions, 401 flow [2022-11-16 12:48:19,302 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) [2022-11-16 12:48:19,302 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:48:19,303 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, 1, 1, 1, 1, 1, 1] [2022-11-16 12:48:19,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 12:48:19,304 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-16 12:48:19,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:48:19,307 INFO L85 PathProgramCache]: Analyzing trace with hash -107263413, now seen corresponding path program 1 times [2022-11-16 12:48:19,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:48:19,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313917259] [2022-11-16 12:48:19,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:48:19,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:48:19,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:48:19,619 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 12:48:19,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:48:19,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313917259] [2022-11-16 12:48:19,620 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313917259] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:48:19,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1941044865] [2022-11-16 12:48:19,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:48:19,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:48:19,621 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fe18449-bbdc-4df8-b44e-c2d8e6901638/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:48:19,624 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fe18449-bbdc-4df8-b44e-c2d8e6901638/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:48:19,635 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fe18449-bbdc-4df8-b44e-c2d8e6901638/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 12:48:19,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:48:19,741 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 12:48:19,750 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:48:19,870 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 12:48:19,870 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:48:19,972 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 12:48:19,973 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1941044865] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:48:19,973 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:48:19,973 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-16 12:48:19,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626102504] [2022-11-16 12:48:19,974 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:48:19,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 12:48:19,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:48:19,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 12:48:19,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-16 12:48:19,985 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 202 [2022-11-16 12:48:19,990 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 172 transitions, 401 flow. Second operand has 12 states, 12 states have (on average 156.66666666666666) internal successors, (1880), 12 states have internal predecessors, (1880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:48:19,990 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:48:19,990 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 202 [2022-11-16 12:48:19,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:48:20,521 INFO L130 PetriNetUnfolder]: 161/807 cut-off events. [2022-11-16 12:48:20,521 INFO L131 PetriNetUnfolder]: For 42/42 co-relation queries the response was YES. [2022-11-16 12:48:20,526 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1276 conditions, 807 events. 161/807 cut-off events. For 42/42 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 3532 event pairs, 70 based on Foata normal form. 6/648 useless extension candidates. Maximal degree in co-relation 812. Up to 71 conditions per place. [2022-11-16 12:48:20,532 INFO L137 encePairwiseOnDemand]: 187/202 looper letters, 106 selfloop transitions, 40 changer transitions 0/277 dead transitions. [2022-11-16 12:48:20,532 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 277 transitions, 969 flow [2022-11-16 12:48:20,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-16 12:48:20,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-16 12:48:20,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2924 transitions. [2022-11-16 12:48:20,539 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8041804180418042 [2022-11-16 12:48:20,540 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2924 transitions. [2022-11-16 12:48:20,540 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2924 transitions. [2022-11-16 12:48:20,542 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:48:20,542 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2924 transitions. [2022-11-16 12:48:20,549 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 162.44444444444446) internal successors, (2924), 18 states have internal predecessors, (2924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:48:20,556 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 202.0) internal successors, (3838), 19 states have internal predecessors, (3838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:48:20,558 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 202.0) internal successors, (3838), 19 states have internal predecessors, (3838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:48:20,559 INFO L175 Difference]: Start difference. First operand has 176 places, 172 transitions, 401 flow. Second operand 18 states and 2924 transitions. [2022-11-16 12:48:20,559 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 277 transitions, 969 flow [2022-11-16 12:48:20,564 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 277 transitions, 964 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 12:48:20,570 INFO L231 Difference]: Finished difference. Result has 191 places, 199 transitions, 634 flow [2022-11-16 12:48:20,570 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=396, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=634, PETRI_PLACES=191, PETRI_TRANSITIONS=199} [2022-11-16 12:48:20,571 INFO L288 CegarLoopForPetriNet]: 174 programPoint places, 17 predicate places. [2022-11-16 12:48:20,571 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 199 transitions, 634 flow [2022-11-16 12:48:20,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 156.66666666666666) internal successors, (1880), 12 states have internal predecessors, (1880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:48:20,573 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:48:20,574 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:48:20,588 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fe18449-bbdc-4df8-b44e-c2d8e6901638/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-16 12:48:20,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fe18449-bbdc-4df8-b44e-c2d8e6901638/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:48:20,780 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-16 12:48:20,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:48:20,780 INFO L85 PathProgramCache]: Analyzing trace with hash 969802020, now seen corresponding path program 1 times [2022-11-16 12:48:20,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:48:20,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038479419] [2022-11-16 12:48:20,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:48:20,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:48:20,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:48:20,913 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 12:48:20,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:48:20,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038479419] [2022-11-16 12:48:20,914 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038479419] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:48:20,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1502464885] [2022-11-16 12:48:20,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:48:20,915 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:48:20,915 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fe18449-bbdc-4df8-b44e-c2d8e6901638/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:48:20,916 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fe18449-bbdc-4df8-b44e-c2d8e6901638/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:48:20,939 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fe18449-bbdc-4df8-b44e-c2d8e6901638/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 12:48:21,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:48:21,008 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 12:48:21,010 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:48:21,088 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 12:48:21,089 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:48:21,089 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1502464885] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:48:21,089 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:48:21,090 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-16 12:48:21,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706002168] [2022-11-16 12:48:21,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:48:21,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:48:21,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:48:21,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:48:21,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:48:21,099 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 202 [2022-11-16 12:48:21,101 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 199 transitions, 634 flow. Second operand has 6 states, 6 states have (on average 156.33333333333334) internal successors, (938), 6 states have internal predecessors, (938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:48:21,101 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:48:21,101 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 202 [2022-11-16 12:48:21,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:48:21,437 INFO L130 PetriNetUnfolder]: 161/799 cut-off events. [2022-11-16 12:48:21,438 INFO L131 PetriNetUnfolder]: For 136/136 co-relation queries the response was YES. [2022-11-16 12:48:21,440 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1313 conditions, 799 events. 161/799 cut-off events. For 136/136 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 3452 event pairs, 70 based on Foata normal form. 8/642 useless extension candidates. Maximal degree in co-relation 1021. Up to 240 conditions per place. [2022-11-16 12:48:21,445 INFO L137 encePairwiseOnDemand]: 191/202 looper letters, 53 selfloop transitions, 27 changer transitions 0/211 dead transitions. [2022-11-16 12:48:21,445 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 211 transitions, 788 flow [2022-11-16 12:48:21,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:48:21,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 12:48:21,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1139 transitions. [2022-11-16 12:48:21,448 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8055162659123055 [2022-11-16 12:48:21,448 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1139 transitions. [2022-11-16 12:48:21,448 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1139 transitions. [2022-11-16 12:48:21,449 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:48:21,449 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1139 transitions. [2022-11-16 12:48:21,452 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 162.71428571428572) internal successors, (1139), 7 states have internal predecessors, (1139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:48:21,454 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 202.0) internal successors, (1616), 8 states have internal predecessors, (1616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:48:21,455 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 202.0) internal successors, (1616), 8 states have internal predecessors, (1616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:48:21,455 INFO L175 Difference]: Start difference. First operand has 191 places, 199 transitions, 634 flow. Second operand 7 states and 1139 transitions. [2022-11-16 12:48:21,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 211 transitions, 788 flow [2022-11-16 12:48:21,464 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 211 transitions, 714 flow, removed 26 selfloop flow, removed 5 redundant places. [2022-11-16 12:48:21,469 INFO L231 Difference]: Finished difference. Result has 186 places, 191 transitions, 560 flow [2022-11-16 12:48:21,469 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=506, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=560, PETRI_PLACES=186, PETRI_TRANSITIONS=191} [2022-11-16 12:48:21,471 INFO L288 CegarLoopForPetriNet]: 174 programPoint places, 12 predicate places. [2022-11-16 12:48:21,472 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 191 transitions, 560 flow [2022-11-16 12:48:21,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 156.33333333333334) internal successors, (938), 6 states have internal predecessors, (938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:48:21,472 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:48:21,473 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, 1, 1, 1, 1, 1, 1] [2022-11-16 12:48:21,483 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fe18449-bbdc-4df8-b44e-c2d8e6901638/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 12:48:21,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fe18449-bbdc-4df8-b44e-c2d8e6901638/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:48:21,679 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-16 12:48:21,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:48:21,679 INFO L85 PathProgramCache]: Analyzing trace with hash -1491966717, now seen corresponding path program 2 times [2022-11-16 12:48:21,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:48:21,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171513333] [2022-11-16 12:48:21,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:48:21,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:48:21,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:48:22,026 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 12:48:22,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:48:22,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171513333] [2022-11-16 12:48:22,027 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171513333] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:48:22,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1757804384] [2022-11-16 12:48:22,027 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:48:22,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:48:22,028 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fe18449-bbdc-4df8-b44e-c2d8e6901638/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:48:22,029 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fe18449-bbdc-4df8-b44e-c2d8e6901638/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:48:22,055 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fe18449-bbdc-4df8-b44e-c2d8e6901638/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 12:48:22,140 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-16 12:48:22,140 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:48:22,141 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 12:48:22,144 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:48:22,329 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 12:48:22,329 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:48:22,508 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 12:48:22,508 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1757804384] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:48:22,508 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:48:22,508 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 17 [2022-11-16 12:48:22,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066131986] [2022-11-16 12:48:22,509 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:48:22,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-16 12:48:22,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:48:22,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-16 12:48:22,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2022-11-16 12:48:22,514 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 202 [2022-11-16 12:48:22,517 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 191 transitions, 560 flow. Second operand has 18 states, 18 states have (on average 142.61111111111111) internal successors, (2567), 18 states have internal predecessors, (2567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:48:22,517 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:48:22,517 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 202 [2022-11-16 12:48:22,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:48:23,816 INFO L130 PetriNetUnfolder]: 141/913 cut-off events. [2022-11-16 12:48:23,816 INFO L131 PetriNetUnfolder]: For 154/154 co-relation queries the response was YES. [2022-11-16 12:48:23,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1453 conditions, 913 events. 141/913 cut-off events. For 154/154 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 4031 event pairs, 49 based on Foata normal form. 4/798 useless extension candidates. Maximal degree in co-relation 942. Up to 51 conditions per place. [2022-11-16 12:48:23,821 INFO L137 encePairwiseOnDemand]: 180/202 looper letters, 128 selfloop transitions, 65 changer transitions 2/309 dead transitions. [2022-11-16 12:48:23,822 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 309 transitions, 1265 flow [2022-11-16 12:48:23,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-11-16 12:48:23,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2022-11-16 12:48:23,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 7022 transitions. [2022-11-16 12:48:23,836 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7094362497474237 [2022-11-16 12:48:23,836 INFO L72 ComplementDD]: Start complementDD. Operand 49 states and 7022 transitions. [2022-11-16 12:48:23,836 INFO L73 IsDeterministic]: Start isDeterministic. Operand 49 states and 7022 transitions. [2022-11-16 12:48:23,840 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:48:23,840 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 49 states and 7022 transitions. [2022-11-16 12:48:23,854 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 50 states, 49 states have (on average 143.30612244897958) internal successors, (7022), 49 states have internal predecessors, (7022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:48:23,871 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 50 states, 50 states have (on average 202.0) internal successors, (10100), 50 states have internal predecessors, (10100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:48:23,875 INFO L81 ComplementDD]: Finished complementDD. Result has 50 states, 50 states have (on average 202.0) internal successors, (10100), 50 states have internal predecessors, (10100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:48:23,876 INFO L175 Difference]: Start difference. First operand has 186 places, 191 transitions, 560 flow. Second operand 49 states and 7022 transitions. [2022-11-16 12:48:23,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 309 transitions, 1265 flow [2022-11-16 12:48:23,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 309 transitions, 1222 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-16 12:48:23,885 INFO L231 Difference]: Finished difference. Result has 230 places, 212 transitions, 767 flow [2022-11-16 12:48:23,886 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=512, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=49, PETRI_FLOW=767, PETRI_PLACES=230, PETRI_TRANSITIONS=212} [2022-11-16 12:48:23,887 INFO L288 CegarLoopForPetriNet]: 174 programPoint places, 56 predicate places. [2022-11-16 12:48:23,887 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 212 transitions, 767 flow [2022-11-16 12:48:23,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 142.61111111111111) internal successors, (2567), 18 states have internal predecessors, (2567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:48:23,888 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:48:23,888 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:48:23,899 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fe18449-bbdc-4df8-b44e-c2d8e6901638/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-16 12:48:24,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fe18449-bbdc-4df8-b44e-c2d8e6901638/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:48:24,094 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-16 12:48:24,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:48:24,094 INFO L85 PathProgramCache]: Analyzing trace with hash -1236121836, now seen corresponding path program 1 times [2022-11-16 12:48:24,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:48:24,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979843337] [2022-11-16 12:48:24,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:48:24,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:48:24,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:48:24,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:48:24,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:48:24,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979843337] [2022-11-16 12:48:24,235 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979843337] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:48:24,235 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:48:24,235 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:48:24,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371484935] [2022-11-16 12:48:24,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:48:24,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:48:24,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:48:24,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:48:24,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:48:24,238 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 202 [2022-11-16 12:48:24,238 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 212 transitions, 767 flow. Second operand has 3 states, 3 states have (on average 172.66666666666666) internal successors, (518), 3 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:48:24,238 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:48:24,239 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 202 [2022-11-16 12:48:24,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:48:24,597 INFO L130 PetriNetUnfolder]: 491/1956 cut-off events. [2022-11-16 12:48:24,597 INFO L131 PetriNetUnfolder]: For 194/243 co-relation queries the response was YES. [2022-11-16 12:48:24,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3225 conditions, 1956 events. 491/1956 cut-off events. For 194/243 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 12091 event pairs, 119 based on Foata normal form. 0/1711 useless extension candidates. Maximal degree in co-relation 2948. Up to 519 conditions per place. [2022-11-16 12:48:24,610 INFO L137 encePairwiseOnDemand]: 198/202 looper letters, 20 selfloop transitions, 2 changer transitions 6/223 dead transitions. [2022-11-16 12:48:24,610 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 223 transitions, 844 flow [2022-11-16 12:48:24,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:48:24,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 12:48:24,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 541 transitions. [2022-11-16 12:48:24,613 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8927392739273927 [2022-11-16 12:48:24,613 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 541 transitions. [2022-11-16 12:48:24,613 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 541 transitions. [2022-11-16 12:48:24,614 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:48:24,614 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 541 transitions. [2022-11-16 12:48:24,616 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 180.33333333333334) internal successors, (541), 3 states have internal predecessors, (541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:48:24,617 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 202.0) internal successors, (808), 4 states have internal predecessors, (808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:48:24,617 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 202.0) internal successors, (808), 4 states have internal predecessors, (808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:48:24,618 INFO L175 Difference]: Start difference. First operand has 230 places, 212 transitions, 767 flow. Second operand 3 states and 541 transitions. [2022-11-16 12:48:24,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 223 transitions, 844 flow [2022-11-16 12:48:24,622 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 223 transitions, 761 flow, removed 9 selfloop flow, removed 15 redundant places. [2022-11-16 12:48:24,625 INFO L231 Difference]: Finished difference. Result has 216 places, 209 transitions, 689 flow [2022-11-16 12:48:24,626 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=684, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=689, PETRI_PLACES=216, PETRI_TRANSITIONS=209} [2022-11-16 12:48:24,628 INFO L288 CegarLoopForPetriNet]: 174 programPoint places, 42 predicate places. [2022-11-16 12:48:24,628 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 209 transitions, 689 flow [2022-11-16 12:48:24,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 172.66666666666666) internal successors, (518), 3 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:48:24,629 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:48:24,629 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:48:24,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 12:48:24,629 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-16 12:48:24,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:48:24,630 INFO L85 PathProgramCache]: Analyzing trace with hash -616393328, now seen corresponding path program 1 times [2022-11-16 12:48:24,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:48:24,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671388112] [2022-11-16 12:48:24,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:48:24,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:48:24,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:48:24,786 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:48:24,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:48:24,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671388112] [2022-11-16 12:48:24,787 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671388112] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:48:24,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [387589751] [2022-11-16 12:48:24,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:48:24,787 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:48:24,787 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fe18449-bbdc-4df8-b44e-c2d8e6901638/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:48:24,791 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fe18449-bbdc-4df8-b44e-c2d8e6901638/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:48:24,811 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fe18449-bbdc-4df8-b44e-c2d8e6901638/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 12:48:24,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:48:24,900 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-16 12:48:24,905 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:48:25,204 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-16 12:48:25,204 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:48:25,204 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [387589751] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:48:25,204 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:48:25,204 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [3] total 9 [2022-11-16 12:48:25,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475590835] [2022-11-16 12:48:25,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:48:25,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:48:25,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:48:25,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:48:25,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:48:25,207 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 202 [2022-11-16 12:48:25,208 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 209 transitions, 689 flow. Second operand has 7 states, 7 states have (on average 147.71428571428572) internal successors, (1034), 7 states have internal predecessors, (1034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:48:25,208 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:48:25,208 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 202 [2022-11-16 12:48:25,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:48:25,546 INFO L130 PetriNetUnfolder]: 303/1536 cut-off events. [2022-11-16 12:48:25,546 INFO L131 PetriNetUnfolder]: For 227/227 co-relation queries the response was YES. [2022-11-16 12:48:25,550 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2568 conditions, 1536 events. 303/1536 cut-off events. For 227/227 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 8777 event pairs, 180 based on Foata normal form. 4/1389 useless extension candidates. Maximal degree in co-relation 2261. Up to 575 conditions per place. [2022-11-16 12:48:25,555 INFO L137 encePairwiseOnDemand]: 192/202 looper letters, 69 selfloop transitions, 13 changer transitions 7/216 dead transitions. [2022-11-16 12:48:25,555 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 216 transitions, 882 flow [2022-11-16 12:48:25,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 12:48:25,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-16 12:48:25,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1204 transitions. [2022-11-16 12:48:25,558 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.745049504950495 [2022-11-16 12:48:25,558 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1204 transitions. [2022-11-16 12:48:25,559 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1204 transitions. [2022-11-16 12:48:25,559 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:48:25,560 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1204 transitions. [2022-11-16 12:48:25,562 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 150.5) internal successors, (1204), 8 states have internal predecessors, (1204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:48:25,565 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 202.0) internal successors, (1818), 9 states have internal predecessors, (1818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:48:25,565 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 202.0) internal successors, (1818), 9 states have internal predecessors, (1818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:48:25,565 INFO L175 Difference]: Start difference. First operand has 216 places, 209 transitions, 689 flow. Second operand 8 states and 1204 transitions. [2022-11-16 12:48:25,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 216 transitions, 882 flow [2022-11-16 12:48:25,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 216 transitions, 880 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 12:48:25,571 INFO L231 Difference]: Finished difference. Result has 218 places, 207 transitions, 707 flow [2022-11-16 12:48:25,572 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=683, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=707, PETRI_PLACES=218, PETRI_TRANSITIONS=207} [2022-11-16 12:48:25,572 INFO L288 CegarLoopForPetriNet]: 174 programPoint places, 44 predicate places. [2022-11-16 12:48:25,572 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 207 transitions, 707 flow [2022-11-16 12:48:25,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 147.71428571428572) internal successors, (1034), 7 states have internal predecessors, (1034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:48:25,573 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:48:25,573 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:48:25,583 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fe18449-bbdc-4df8-b44e-c2d8e6901638/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-16 12:48:25,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fe18449-bbdc-4df8-b44e-c2d8e6901638/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-16 12:48:25,779 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-16 12:48:25,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:48:25,779 INFO L85 PathProgramCache]: Analyzing trace with hash 689450420, now seen corresponding path program 1 times [2022-11-16 12:48:25,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:48:25,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198585348] [2022-11-16 12:48:25,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:48:25,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:48:25,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:48:25,904 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:48:25,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:48:25,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198585348] [2022-11-16 12:48:25,905 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198585348] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:48:25,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2139096255] [2022-11-16 12:48:25,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:48:25,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:48:25,906 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fe18449-bbdc-4df8-b44e-c2d8e6901638/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:48:25,907 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fe18449-bbdc-4df8-b44e-c2d8e6901638/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:48:25,927 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fe18449-bbdc-4df8-b44e-c2d8e6901638/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-16 12:48:26,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:48:26,011 INFO L263 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-16 12:48:26,014 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:48:26,381 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:48:26,381 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:48:26,724 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:48:26,724 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2139096255] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:48:26,724 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:48:26,725 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 10, 10] total 19 [2022-11-16 12:48:26,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099609725] [2022-11-16 12:48:26,725 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:48:26,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-16 12:48:26,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:48:26,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-16 12:48:26,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2022-11-16 12:48:26,728 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 202 [2022-11-16 12:48:26,746 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 207 transitions, 707 flow. Second operand has 19 states, 19 states have (on average 138.68421052631578) internal successors, (2635), 19 states have internal predecessors, (2635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:48:26,747 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:48:26,747 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 202 [2022-11-16 12:48:26,747 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:48:27,494 INFO L130 PetriNetUnfolder]: 406/1606 cut-off events. [2022-11-16 12:48:27,494 INFO L131 PetriNetUnfolder]: For 259/259 co-relation queries the response was YES. [2022-11-16 12:48:27,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2928 conditions, 1606 events. 406/1606 cut-off events. For 259/259 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 8911 event pairs, 72 based on Foata normal form. 4/1484 useless extension candidates. Maximal degree in co-relation 2593. Up to 260 conditions per place. [2022-11-16 12:48:27,504 INFO L137 encePairwiseOnDemand]: 186/202 looper letters, 92 selfloop transitions, 32 changer transitions 16/247 dead transitions. [2022-11-16 12:48:27,505 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 247 transitions, 1090 flow [2022-11-16 12:48:27,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-16 12:48:27,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-11-16 12:48:27,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2239 transitions. [2022-11-16 12:48:27,510 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.692759900990099 [2022-11-16 12:48:27,510 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2239 transitions. [2022-11-16 12:48:27,511 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2239 transitions. [2022-11-16 12:48:27,512 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:48:27,512 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2239 transitions. [2022-11-16 12:48:27,517 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 139.9375) internal successors, (2239), 16 states have internal predecessors, (2239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:48:27,522 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 202.0) internal successors, (3434), 17 states have internal predecessors, (3434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:48:27,524 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 202.0) internal successors, (3434), 17 states have internal predecessors, (3434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:48:27,524 INFO L175 Difference]: Start difference. First operand has 218 places, 207 transitions, 707 flow. Second operand 16 states and 2239 transitions. [2022-11-16 12:48:27,524 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 247 transitions, 1090 flow [2022-11-16 12:48:27,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 247 transitions, 1056 flow, removed 4 selfloop flow, removed 7 redundant places. [2022-11-16 12:48:27,531 INFO L231 Difference]: Finished difference. Result has 228 places, 208 transitions, 765 flow [2022-11-16 12:48:27,531 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=679, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=765, PETRI_PLACES=228, PETRI_TRANSITIONS=208} [2022-11-16 12:48:27,532 INFO L288 CegarLoopForPetriNet]: 174 programPoint places, 54 predicate places. [2022-11-16 12:48:27,532 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 208 transitions, 765 flow [2022-11-16 12:48:27,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 138.68421052631578) internal successors, (2635), 19 states have internal predecessors, (2635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:48:27,533 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:48:27,534 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:48:27,543 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fe18449-bbdc-4df8-b44e-c2d8e6901638/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-16 12:48:27,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fe18449-bbdc-4df8-b44e-c2d8e6901638/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:48:27,740 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-16 12:48:27,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:48:27,740 INFO L85 PathProgramCache]: Analyzing trace with hash -968205292, now seen corresponding path program 2 times [2022-11-16 12:48:27,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:48:27,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555263949] [2022-11-16 12:48:27,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:48:27,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:48:27,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:48:27,871 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-16 12:48:27,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:48:27,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555263949] [2022-11-16 12:48:27,872 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555263949] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:48:27,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1435187134] [2022-11-16 12:48:27,872 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:48:27,872 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:48:27,873 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fe18449-bbdc-4df8-b44e-c2d8e6901638/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:48:27,874 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fe18449-bbdc-4df8-b44e-c2d8e6901638/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:48:27,883 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fe18449-bbdc-4df8-b44e-c2d8e6901638/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-16 12:48:27,987 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-16 12:48:27,987 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:48:27,989 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 12:48:27,993 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:48:28,173 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-16 12:48:28,174 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:48:28,340 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-16 12:48:28,340 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1435187134] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:48:28,340 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:48:28,340 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-11-16 12:48:28,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213265784] [2022-11-16 12:48:28,341 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:48:28,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 12:48:28,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:48:28,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 12:48:28,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:48:28,344 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 202 [2022-11-16 12:48:28,345 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 208 transitions, 765 flow. Second operand has 8 states, 8 states have (on average 168.125) internal successors, (1345), 8 states have internal predecessors, (1345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:48:28,345 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:48:28,345 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 202 [2022-11-16 12:48:28,345 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:48:28,757 INFO L130 PetriNetUnfolder]: 503/1812 cut-off events. [2022-11-16 12:48:28,758 INFO L131 PetriNetUnfolder]: For 465/465 co-relation queries the response was YES. [2022-11-16 12:48:28,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3391 conditions, 1812 events. 503/1812 cut-off events. For 465/465 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 10640 event pairs, 60 based on Foata normal form. 0/1697 useless extension candidates. Maximal degree in co-relation 3100. Up to 220 conditions per place. [2022-11-16 12:48:28,766 INFO L137 encePairwiseOnDemand]: 195/202 looper letters, 9 selfloop transitions, 4 changer transitions 85/237 dead transitions. [2022-11-16 12:48:28,766 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 237 transitions, 951 flow [2022-11-16 12:48:28,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 12:48:28,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 12:48:28,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1528 transitions. [2022-11-16 12:48:28,772 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8404840484048405 [2022-11-16 12:48:28,772 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1528 transitions. [2022-11-16 12:48:28,772 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1528 transitions. [2022-11-16 12:48:28,774 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:48:28,775 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1528 transitions. [2022-11-16 12:48:28,780 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 169.77777777777777) internal successors, (1528), 9 states have internal predecessors, (1528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:48:28,783 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 202.0) internal successors, (2020), 10 states have internal predecessors, (2020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:48:28,784 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 202.0) internal successors, (2020), 10 states have internal predecessors, (2020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:48:28,784 INFO L175 Difference]: Start difference. First operand has 228 places, 208 transitions, 765 flow. Second operand 9 states and 1528 transitions. [2022-11-16 12:48:28,784 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 237 transitions, 951 flow [2022-11-16 12:48:28,788 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 237 transitions, 892 flow, removed 6 selfloop flow, removed 11 redundant places. [2022-11-16 12:48:28,791 INFO L231 Difference]: Finished difference. Result has 222 places, 152 transitions, 581 flow [2022-11-16 12:48:28,791 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=708, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=581, PETRI_PLACES=222, PETRI_TRANSITIONS=152} [2022-11-16 12:48:28,793 INFO L288 CegarLoopForPetriNet]: 174 programPoint places, 48 predicate places. [2022-11-16 12:48:28,793 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 152 transitions, 581 flow [2022-11-16 12:48:28,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 168.125) internal successors, (1345), 8 states have internal predecessors, (1345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:48:28,794 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:48:28,795 INFO L209 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:48:28,808 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fe18449-bbdc-4df8-b44e-c2d8e6901638/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-16 12:48:29,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fe18449-bbdc-4df8-b44e-c2d8e6901638/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:48:29,000 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-16 12:48:29,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:48:29,001 INFO L85 PathProgramCache]: Analyzing trace with hash 1899380846, now seen corresponding path program 1 times [2022-11-16 12:48:29,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:48:29,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225895305] [2022-11-16 12:48:29,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:48:29,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:48:29,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:48:29,371 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:48:29,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:48:29,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225895305] [2022-11-16 12:48:29,372 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225895305] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:48:29,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [527966958] [2022-11-16 12:48:29,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:48:29,372 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:48:29,373 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fe18449-bbdc-4df8-b44e-c2d8e6901638/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:48:29,374 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fe18449-bbdc-4df8-b44e-c2d8e6901638/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:48:29,398 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fe18449-bbdc-4df8-b44e-c2d8e6901638/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-16 12:48:29,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:48:29,491 INFO L263 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-16 12:48:29,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:48:29,611 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:48:29,611 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:48:29,946 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:48:29,946 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [527966958] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:48:29,946 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:48:29,947 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 31 [2022-11-16 12:48:29,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304965793] [2022-11-16 12:48:29,949 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:48:29,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-16 12:48:29,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:48:29,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-16 12:48:29,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=271, Invalid=721, Unknown=0, NotChecked=0, Total=992 [2022-11-16 12:48:29,958 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 202 [2022-11-16 12:48:29,965 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 152 transitions, 581 flow. Second operand has 32 states, 32 states have (on average 157.28125) internal successors, (5033), 32 states have internal predecessors, (5033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:48:29,965 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:48:29,965 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 202 [2022-11-16 12:48:29,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:48:30,845 INFO L130 PetriNetUnfolder]: 16/493 cut-off events. [2022-11-16 12:48:30,845 INFO L131 PetriNetUnfolder]: For 454/454 co-relation queries the response was YES. [2022-11-16 12:48:30,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1102 conditions, 493 events. 16/493 cut-off events. For 454/454 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 795 event pairs, 0 based on Foata normal form. 8/501 useless extension candidates. Maximal degree in co-relation 1087. Up to 37 conditions per place. [2022-11-16 12:48:30,847 INFO L137 encePairwiseOnDemand]: 190/202 looper letters, 140 selfloop transitions, 102 changer transitions 0/331 dead transitions. [2022-11-16 12:48:30,848 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 331 transitions, 1844 flow [2022-11-16 12:48:30,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-11-16 12:48:30,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2022-11-16 12:48:30,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 7026 transitions. [2022-11-16 12:48:30,858 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7905040504050405 [2022-11-16 12:48:30,858 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 7026 transitions. [2022-11-16 12:48:30,859 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 7026 transitions. [2022-11-16 12:48:30,861 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:48:30,862 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 7026 transitions. [2022-11-16 12:48:30,872 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 159.6818181818182) internal successors, (7026), 44 states have internal predecessors, (7026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:48:30,885 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 202.0) internal successors, (9090), 45 states have internal predecessors, (9090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:48:30,888 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 202.0) internal successors, (9090), 45 states have internal predecessors, (9090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:48:30,889 INFO L175 Difference]: Start difference. First operand has 222 places, 152 transitions, 581 flow. Second operand 44 states and 7026 transitions. [2022-11-16 12:48:30,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 331 transitions, 1844 flow [2022-11-16 12:48:30,894 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 331 transitions, 1835 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-16 12:48:30,898 INFO L231 Difference]: Finished difference. Result has 214 places, 212 transitions, 1241 flow [2022-11-16 12:48:30,899 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=572, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=1241, PETRI_PLACES=214, PETRI_TRANSITIONS=212} [2022-11-16 12:48:30,899 INFO L288 CegarLoopForPetriNet]: 174 programPoint places, 40 predicate places. [2022-11-16 12:48:30,899 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 212 transitions, 1241 flow [2022-11-16 12:48:30,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 157.28125) internal successors, (5033), 32 states have internal predecessors, (5033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:48:30,901 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:48:30,901 INFO L209 CegarLoopForPetriNet]: trace histogram [15, 15, 15, 15, 15, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:48:30,912 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fe18449-bbdc-4df8-b44e-c2d8e6901638/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-11-16 12:48:31,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fe18449-bbdc-4df8-b44e-c2d8e6901638/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-11-16 12:48:31,112 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-16 12:48:31,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:48:31,112 INFO L85 PathProgramCache]: Analyzing trace with hash -213671314, now seen corresponding path program 2 times [2022-11-16 12:48:31,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:48:31,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474196022] [2022-11-16 12:48:31,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:48:31,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:48:31,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:48:32,199 INFO L134 CoverageAnalysis]: Checked inductivity of 903 backedges. 0 proven. 903 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:48:32,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:48:32,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474196022] [2022-11-16 12:48:32,199 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474196022] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:48:32,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1894861408] [2022-11-16 12:48:32,199 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:48:32,200 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:48:32,200 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fe18449-bbdc-4df8-b44e-c2d8e6901638/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:48:32,201 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fe18449-bbdc-4df8-b44e-c2d8e6901638/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:48:32,227 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fe18449-bbdc-4df8-b44e-c2d8e6901638/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-16 12:48:32,326 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-16 12:48:32,326 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:48:32,328 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 12:48:32,331 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:48:32,711 INFO L134 CoverageAnalysis]: Checked inductivity of 903 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 833 trivial. 0 not checked. [2022-11-16 12:48:32,712 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:48:33,099 INFO L134 CoverageAnalysis]: Checked inductivity of 903 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 833 trivial. 0 not checked. [2022-11-16 12:48:33,099 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1894861408] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:48:33,099 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:48:33,099 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 7, 7] total 37 [2022-11-16 12:48:33,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947942394] [2022-11-16 12:48:33,100 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:48:33,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-11-16 12:48:33,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:48:33,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-11-16 12:48:33,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=313, Invalid=1093, Unknown=0, NotChecked=0, Total=1406 [2022-11-16 12:48:33,107 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 202 [2022-11-16 12:48:33,111 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 212 transitions, 1241 flow. Second operand has 38 states, 38 states have (on average 137.97368421052633) internal successors, (5243), 38 states have internal predecessors, (5243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:48:33,111 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:48:33,111 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 202 [2022-11-16 12:48:33,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:48:36,815 INFO L130 PetriNetUnfolder]: 18/541 cut-off events. [2022-11-16 12:48:36,815 INFO L131 PetriNetUnfolder]: For 984/984 co-relation queries the response was YES. [2022-11-16 12:48:36,816 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1408 conditions, 541 events. 18/541 cut-off events. For 984/984 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 905 event pairs, 0 based on Foata normal form. 2/543 useless extension candidates. Maximal degree in co-relation 1386. Up to 42 conditions per place. [2022-11-16 12:48:36,818 INFO L137 encePairwiseOnDemand]: 184/202 looper letters, 0 selfloop transitions, 0 changer transitions 367/367 dead transitions. [2022-11-16 12:48:36,818 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 367 transitions, 2456 flow [2022-11-16 12:48:36,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2022-11-16 12:48:36,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2022-11-16 12:48:36,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 16113 transitions. [2022-11-16 12:48:36,841 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6759942943446887 [2022-11-16 12:48:36,841 INFO L72 ComplementDD]: Start complementDD. Operand 118 states and 16113 transitions. [2022-11-16 12:48:36,841 INFO L73 IsDeterministic]: Start isDeterministic. Operand 118 states and 16113 transitions. [2022-11-16 12:48:36,847 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:48:36,848 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 118 states and 16113 transitions. [2022-11-16 12:48:36,872 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 119 states, 118 states have (on average 136.55084745762713) internal successors, (16113), 118 states have internal predecessors, (16113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:48:36,942 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 119 states, 119 states have (on average 202.0) internal successors, (24038), 119 states have internal predecessors, (24038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:48:36,949 INFO L81 ComplementDD]: Finished complementDD. Result has 119 states, 119 states have (on average 202.0) internal successors, (24038), 119 states have internal predecessors, (24038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:48:36,949 INFO L175 Difference]: Start difference. First operand has 214 places, 212 transitions, 1241 flow. Second operand 118 states and 16113 transitions. [2022-11-16 12:48:36,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 367 transitions, 2456 flow [2022-11-16 12:48:36,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 367 transitions, 2333 flow, removed 3 selfloop flow, removed 29 redundant places. [2022-11-16 12:48:36,962 INFO L231 Difference]: Finished difference. Result has 301 places, 0 transitions, 0 flow [2022-11-16 12:48:36,963 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=1092, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=118, PETRI_FLOW=0, PETRI_PLACES=301, PETRI_TRANSITIONS=0} [2022-11-16 12:48:36,963 INFO L288 CegarLoopForPetriNet]: 174 programPoint places, 127 predicate places. [2022-11-16 12:48:36,963 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 0 transitions, 0 flow [2022-11-16 12:48:36,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 137.97368421052633) internal successors, (5243), 38 states have internal predecessors, (5243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:48:36,968 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 18 remaining) [2022-11-16 12:48:36,968 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 18 remaining) [2022-11-16 12:48:36,969 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 18 remaining) [2022-11-16 12:48:36,969 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 18 remaining) [2022-11-16 12:48:36,969 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 18 remaining) [2022-11-16 12:48:36,969 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 18 remaining) [2022-11-16 12:48:36,969 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 18 remaining) [2022-11-16 12:48:36,970 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 18 remaining) [2022-11-16 12:48:36,970 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 18 remaining) [2022-11-16 12:48:36,970 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 18 remaining) [2022-11-16 12:48:36,970 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 18 remaining) [2022-11-16 12:48:36,971 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 18 remaining) [2022-11-16 12:48:36,971 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 18 remaining) [2022-11-16 12:48:36,971 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 18 remaining) [2022-11-16 12:48:36,971 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 18 remaining) [2022-11-16 12:48:36,972 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 18 remaining) [2022-11-16 12:48:36,972 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 18 remaining) [2022-11-16 12:48:36,972 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 18 remaining) [2022-11-16 12:48:36,987 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fe18449-bbdc-4df8-b44e-c2d8e6901638/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-16 12:48:37,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fe18449-bbdc-4df8-b44e-c2d8e6901638/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-16 12:48:37,178 INFO L444 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1, 1, 1, 1] [2022-11-16 12:48:37,183 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-16 12:48:37,183 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-16 12:48:37,189 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 12:48:37 BasicIcfg [2022-11-16 12:48:37,189 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-16 12:48:37,190 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-16 12:48:37,190 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-16 12:48:37,190 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-16 12:48:37,191 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:48:18" (3/4) ... [2022-11-16 12:48:37,194 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-16 12:48:37,199 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-11-16 12:48:37,200 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-11-16 12:48:37,213 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 25 nodes and edges [2022-11-16 12:48:37,213 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-16 12:48:37,214 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-16 12:48:37,214 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-16 12:48:37,272 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fe18449-bbdc-4df8-b44e-c2d8e6901638/bin/uautomizer-tPACEb0tL8/witness.graphml [2022-11-16 12:48:37,272 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-16 12:48:37,273 INFO L158 Benchmark]: Toolchain (without parser) took 20360.75ms. Allocated memory was 107.0MB in the beginning and 320.9MB in the end (delta: 213.9MB). Free memory was 60.4MB in the beginning and 251.9MB in the end (delta: -191.5MB). Peak memory consumption was 21.8MB. Max. memory is 16.1GB. [2022-11-16 12:48:37,274 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 107.0MB. Free memory is still 76.8MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 12:48:37,274 INFO L158 Benchmark]: CACSL2BoogieTranslator took 317.29ms. Allocated memory is still 107.0MB. Free memory was 60.2MB in the beginning and 79.2MB in the end (delta: -19.0MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-11-16 12:48:37,275 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.20ms. Allocated memory is still 107.0MB. Free memory was 79.2MB in the beginning and 77.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 12:48:37,275 INFO L158 Benchmark]: Boogie Preprocessor took 32.56ms. Allocated memory is still 107.0MB. Free memory was 76.9MB in the beginning and 75.3MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 12:48:37,275 INFO L158 Benchmark]: RCFGBuilder took 801.65ms. Allocated memory is still 107.0MB. Free memory was 75.3MB in the beginning and 46.1MB in the end (delta: 29.2MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2022-11-16 12:48:37,276 INFO L158 Benchmark]: TraceAbstraction took 19077.88ms. Allocated memory was 107.0MB in the beginning and 320.9MB in the end (delta: 213.9MB). Free memory was 45.7MB in the beginning and 254.7MB in the end (delta: -209.0MB). Peak memory consumption was 142.1MB. Max. memory is 16.1GB. [2022-11-16 12:48:37,276 INFO L158 Benchmark]: Witness Printer took 82.59ms. Allocated memory is still 320.9MB. Free memory was 254.7MB in the beginning and 251.9MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 12:48:37,278 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 107.0MB. Free memory is still 76.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 317.29ms. Allocated memory is still 107.0MB. Free memory was 60.2MB in the beginning and 79.2MB in the end (delta: -19.0MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 41.20ms. Allocated memory is still 107.0MB. Free memory was 79.2MB in the beginning and 77.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 32.56ms. Allocated memory is still 107.0MB. Free memory was 76.9MB in the beginning and 75.3MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 801.65ms. Allocated memory is still 107.0MB. Free memory was 75.3MB in the beginning and 46.1MB in the end (delta: 29.2MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * TraceAbstraction took 19077.88ms. Allocated memory was 107.0MB in the beginning and 320.9MB in the end (delta: 213.9MB). Free memory was 45.7MB in the beginning and 254.7MB in the end (delta: -209.0MB). Peak memory consumption was 142.1MB. Max. memory is 16.1GB. * Witness Printer took 82.59ms. Allocated memory is still 320.9MB. Free memory was 254.7MB in the beginning and 251.9MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 53]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 53]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 58]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 58]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 73]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 73]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 117]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 117]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 117]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 117]: 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, 218 locations, 18 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: 18.9s, OverallIterations: 10, TraceHistogramMax: 15, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 9.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2868 SdHoareTripleChecker+Valid, 1.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2868 mSDsluCounter, 519 SdHoareTripleChecker+Invalid, 1.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 408 mSDsCounter, 333 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2028 IncrementalHoareTripleChecker+Invalid, 2361 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 333 mSolverCounterUnsat, 111 mSDtfsCounter, 2028 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2080 GetRequests, 1712 SyntacticMatches, 14 SemanticMatches, 354 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10300 ImplicationChecksByTransitivity, 6.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1241occurred in iteration=9, InterpolantAutomatonStates: 277, 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: 0.2s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 6.0s InterpolantComputationTime, 2128 NumberOfCodeBlocks, 1938 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 2895 ConstructedInterpolants, 0 QuantifiedInterpolants, 7345 SizeOfPredicates, 47 NumberOfNonLiveVariables, 1740 ConjunctsInSsa, 59 ConjunctsInUnsatCore, 24 InterpolantComputations, 4 PerfectInterpolantSequences, 1852/3594 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 10 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-16 12:48:37,312 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fe18449-bbdc-4df8-b44e-c2d8e6901638/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