./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 8393723b 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_e85d195a-778d-4f8b-880c-05b58fb8c5c4/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e85d195a-778d-4f8b-880c-05b58fb8c5c4/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e85d195a-778d-4f8b-880c-05b58fb8c5c4/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e85d195a-778d-4f8b-880c-05b58fb8c5c4/bin/uautomizer-TMbwUNV5ro/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_e85d195a-778d-4f8b-880c-05b58fb8c5c4/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e85d195a-778d-4f8b-880c-05b58fb8c5c4/bin/uautomizer-TMbwUNV5ro --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-8393723 [2022-11-18 18:31:22,682 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 18:31:22,687 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 18:31:22,710 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 18:31:22,712 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 18:31:22,716 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 18:31:22,719 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 18:31:22,723 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 18:31:22,725 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 18:31:22,731 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 18:31:22,732 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 18:31:22,735 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 18:31:22,735 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 18:31:22,738 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 18:31:22,740 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 18:31:22,742 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 18:31:22,744 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 18:31:22,745 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 18:31:22,746 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 18:31:22,756 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 18:31:22,757 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 18:31:22,758 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 18:31:22,762 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 18:31:22,763 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 18:31:22,771 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 18:31:22,771 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 18:31:22,771 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 18:31:22,773 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 18:31:22,774 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 18:31:22,775 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 18:31:22,776 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 18:31:22,777 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 18:31:22,779 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 18:31:22,780 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 18:31:22,782 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 18:31:22,782 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 18:31:22,783 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 18:31:22,783 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 18:31:22,783 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 18:31:22,784 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 18:31:22,785 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 18:31:22,785 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e85d195a-778d-4f8b-880c-05b58fb8c5c4/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-18 18:31:22,823 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 18:31:22,827 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 18:31:22,828 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 18:31:22,828 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 18:31:22,829 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 18:31:22,829 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 18:31:22,830 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 18:31:22,830 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 18:31:22,831 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 18:31:22,831 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 18:31:22,832 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 18:31:22,832 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 18:31:22,832 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 18:31:22,833 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 18:31:22,833 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 18:31:22,833 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 18:31:22,833 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 18:31:22,833 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 18:31:22,834 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-18 18:31:22,834 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 18:31:22,834 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 18:31:22,834 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 18:31:22,834 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 18:31:22,835 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 18:31:22,835 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 18:31:22,835 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 18:31:22,835 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 18:31:22,836 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 18:31:22,836 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 18:31:22,836 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 18:31:22,836 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 18:31:22,836 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 18:31:22,837 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 18:31:22,837 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 18:31:22,837 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 18:31:22,837 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_e85d195a-778d-4f8b-880c-05b58fb8c5c4/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e85d195a-778d-4f8b-880c-05b58fb8c5c4/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cd94157895dc71e9f24fce5dbc4a71d4e4b55c4da9be28372139a3001decae0a [2022-11-18 18:31:23,132 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 18:31:23,154 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 18:31:23,156 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 18:31:23,158 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 18:31:23,159 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 18:31:23,160 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e85d195a-778d-4f8b-880c-05b58fb8c5c4/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/weaver/popl20-more-inc-subseq.wvr.c [2022-11-18 18:31:23,240 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e85d195a-778d-4f8b-880c-05b58fb8c5c4/bin/uautomizer-TMbwUNV5ro/data/7fa91d1e4/dca19de19337439989fe9e658ed448ac/FLAGf3f4ca57c [2022-11-18 18:31:23,764 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 18:31:23,765 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e85d195a-778d-4f8b-880c-05b58fb8c5c4/sv-benchmarks/c/weaver/popl20-more-inc-subseq.wvr.c [2022-11-18 18:31:23,772 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e85d195a-778d-4f8b-880c-05b58fb8c5c4/bin/uautomizer-TMbwUNV5ro/data/7fa91d1e4/dca19de19337439989fe9e658ed448ac/FLAGf3f4ca57c [2022-11-18 18:31:24,135 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e85d195a-778d-4f8b-880c-05b58fb8c5c4/bin/uautomizer-TMbwUNV5ro/data/7fa91d1e4/dca19de19337439989fe9e658ed448ac [2022-11-18 18:31:24,137 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 18:31:24,139 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 18:31:24,141 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 18:31:24,141 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 18:31:24,149 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 18:31:24,150 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:31:24" (1/1) ... [2022-11-18 18:31:24,151 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@213db3b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:31:24, skipping insertion in model container [2022-11-18 18:31:24,151 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:31:24" (1/1) ... [2022-11-18 18:31:24,159 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 18:31:24,177 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 18:31:24,452 WARN L234 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_e85d195a-778d-4f8b-880c-05b58fb8c5c4/sv-benchmarks/c/weaver/popl20-more-inc-subseq.wvr.c[2924,2937] [2022-11-18 18:31:24,469 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 18:31:24,486 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 18:31:24,537 WARN L234 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_e85d195a-778d-4f8b-880c-05b58fb8c5c4/sv-benchmarks/c/weaver/popl20-more-inc-subseq.wvr.c[2924,2937] [2022-11-18 18:31:24,539 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 18:31:24,555 INFO L208 MainTranslator]: Completed translation [2022-11-18 18:31:24,556 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:31:24 WrapperNode [2022-11-18 18:31:24,556 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 18:31:24,557 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 18:31:24,557 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 18:31:24,557 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 18:31:24,564 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:31:24" (1/1) ... [2022-11-18 18:31:24,584 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:31:24" (1/1) ... [2022-11-18 18:31:24,628 INFO L138 Inliner]: procedures = 24, calls = 45, calls flagged for inlining = 11, calls inlined = 13, statements flattened = 201 [2022-11-18 18:31:24,628 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 18:31:24,629 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 18:31:24,629 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 18:31:24,629 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 18:31:24,639 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:31:24" (1/1) ... [2022-11-18 18:31:24,639 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:31:24" (1/1) ... [2022-11-18 18:31:24,656 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:31:24" (1/1) ... [2022-11-18 18:31:24,657 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:31:24" (1/1) ... [2022-11-18 18:31:24,662 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:31:24" (1/1) ... [2022-11-18 18:31:24,675 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:31:24" (1/1) ... [2022-11-18 18:31:24,677 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:31:24" (1/1) ... [2022-11-18 18:31:24,678 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:31:24" (1/1) ... [2022-11-18 18:31:24,680 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 18:31:24,681 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 18:31:24,681 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 18:31:24,681 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 18:31:24,695 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:31:24" (1/1) ... [2022-11-18 18:31:24,702 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 18:31:24,714 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e85d195a-778d-4f8b-880c-05b58fb8c5c4/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:31:24,732 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e85d195a-778d-4f8b-880c-05b58fb8c5c4/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 18:31:24,762 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e85d195a-778d-4f8b-880c-05b58fb8c5c4/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 18:31:24,783 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 18:31:24,783 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-18 18:31:24,783 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-18 18:31:24,783 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-18 18:31:24,783 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-18 18:31:24,784 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 18:31:24,784 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 18:31:24,784 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 18:31:24,784 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-18 18:31:24,784 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-18 18:31:24,784 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-18 18:31:24,785 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 18:31:24,785 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 18:31:24,785 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 18:31:24,785 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 18:31:24,787 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-18 18:31:24,922 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 18:31:24,925 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 18:31:25,378 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 18:31:25,530 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 18:31:25,530 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-18 18:31:25,532 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:31:25 BoogieIcfgContainer [2022-11-18 18:31:25,533 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 18:31:25,535 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 18:31:25,535 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 18:31:25,539 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 18:31:25,539 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 06:31:24" (1/3) ... [2022-11-18 18:31:25,540 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40fa722a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:31:25, skipping insertion in model container [2022-11-18 18:31:25,540 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:31:24" (2/3) ... [2022-11-18 18:31:25,540 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40fa722a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:31:25, skipping insertion in model container [2022-11-18 18:31:25,541 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:31:25" (3/3) ... [2022-11-18 18:31:25,542 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-inc-subseq.wvr.c [2022-11-18 18:31:25,551 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 18:31:25,561 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 18:31:25,562 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2022-11-18 18:31:25,562 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 18:31:25,632 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-18 18:31:25,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 194 places, 202 transitions, 420 flow [2022-11-18 18:31:25,782 INFO L130 PetriNetUnfolder]: 15/200 cut-off events. [2022-11-18 18:31:25,782 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-18 18:31:25,787 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. [2022-11-18 18:31:25,788 INFO L82 GeneralOperation]: Start removeDead. Operand has 194 places, 202 transitions, 420 flow [2022-11-18 18:31:25,793 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 174 places, 181 transitions, 371 flow [2022-11-18 18:31:25,819 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 18:31:25,829 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;@215a639b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 18:31:25,829 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2022-11-18 18:31:25,874 INFO L130 PetriNetUnfolder]: 3/73 cut-off events. [2022-11-18 18:31:25,874 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 18:31:25,874 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:31:25,875 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] [2022-11-18 18:31:25,876 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-18 18:31:25,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:31:25,881 INFO L85 PathProgramCache]: Analyzing trace with hash 440222467, now seen corresponding path program 1 times [2022-11-18 18:31:25,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:31:25,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477458232] [2022-11-18 18:31:25,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:31:25,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:31:26,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:31:26,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:31:26,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:31:26,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477458232] [2022-11-18 18:31:26,358 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477458232] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:31:26,358 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:31:26,359 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:31:26,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518766482] [2022-11-18 18:31:26,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:31:26,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:31:26,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:31:26,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:31:26,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:31:26,424 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 202 [2022-11-18 18:31:26,429 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) [2022-11-18 18:31:26,429 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:31:26,429 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 202 [2022-11-18 18:31:26,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:31:26,714 INFO L130 PetriNetUnfolder]: 65/374 cut-off events. [2022-11-18 18:31:26,714 INFO L131 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2022-11-18 18:31:26,716 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. [2022-11-18 18:31:26,719 INFO L137 encePairwiseOnDemand]: 178/202 looper letters, 52 selfloop transitions, 9 changer transitions 5/197 dead transitions. [2022-11-18 18:31:26,719 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 197 transitions, 534 flow [2022-11-18 18:31:26,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 18:31:26,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 18:31:26,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 853 transitions. [2022-11-18 18:31:26,740 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8445544554455445 [2022-11-18 18:31:26,741 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 853 transitions. [2022-11-18 18:31:26,742 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 853 transitions. [2022-11-18 18:31:26,744 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:31:26,747 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 853 transitions. [2022-11-18 18:31:26,752 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) [2022-11-18 18:31:26,763 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) [2022-11-18 18:31:26,764 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) [2022-11-18 18:31:26,766 INFO L175 Difference]: Start difference. First operand has 174 places, 181 transitions, 371 flow. Second operand 5 states and 853 transitions. [2022-11-18 18:31:26,767 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 197 transitions, 534 flow [2022-11-18 18:31:26,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 197 transitions, 524 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 18:31:26,790 INFO L231 Difference]: Finished difference. Result has 176 places, 172 transitions, 401 flow [2022-11-18 18:31:26,792 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} [2022-11-18 18:31:26,799 INFO L288 CegarLoopForPetriNet]: 174 programPoint places, 2 predicate places. [2022-11-18 18:31:26,799 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 172 transitions, 401 flow [2022-11-18 18:31:26,800 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) [2022-11-18 18:31:26,800 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:31:26,801 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] [2022-11-18 18:31:26,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 18:31:26,802 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-18 18:31:26,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:31:26,803 INFO L85 PathProgramCache]: Analyzing trace with hash -107263413, now seen corresponding path program 1 times [2022-11-18 18:31:26,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:31:26,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135145737] [2022-11-18 18:31:26,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:31:26,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:31:26,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:31:27,018 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:31:27,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:31:27,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135145737] [2022-11-18 18:31:27,019 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135145737] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:31:27,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1903158798] [2022-11-18 18:31:27,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:31:27,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:31:27,020 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e85d195a-778d-4f8b-880c-05b58fb8c5c4/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:31:27,023 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e85d195a-778d-4f8b-880c-05b58fb8c5c4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:31:27,050 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e85d195a-778d-4f8b-880c-05b58fb8c5c4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 18:31:27,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:31:27,152 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 18:31:27,160 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:31:27,271 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:31:27,271 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:31:27,376 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:31:27,377 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1903158798] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:31:27,377 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 18:31:27,377 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-18 18:31:27,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50464474] [2022-11-18 18:31:27,379 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 18:31:27,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 18:31:27,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:31:27,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 18:31:27,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-18 18:31:27,384 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 202 [2022-11-18 18:31:27,386 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) [2022-11-18 18:31:27,387 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:31:27,387 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 202 [2022-11-18 18:31:27,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:31:27,975 INFO L130 PetriNetUnfolder]: 161/807 cut-off events. [2022-11-18 18:31:27,975 INFO L131 PetriNetUnfolder]: For 42/42 co-relation queries the response was YES. [2022-11-18 18:31:27,980 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. [2022-11-18 18:31:27,985 INFO L137 encePairwiseOnDemand]: 187/202 looper letters, 106 selfloop transitions, 40 changer transitions 0/277 dead transitions. [2022-11-18 18:31:27,986 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 277 transitions, 969 flow [2022-11-18 18:31:27,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-18 18:31:27,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-18 18:31:27,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2924 transitions. [2022-11-18 18:31:27,993 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8041804180418042 [2022-11-18 18:31:27,993 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2924 transitions. [2022-11-18 18:31:27,994 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2924 transitions. [2022-11-18 18:31:27,995 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:31:27,996 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2924 transitions. [2022-11-18 18:31:28,002 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) [2022-11-18 18:31:28,009 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) [2022-11-18 18:31:28,012 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) [2022-11-18 18:31:28,012 INFO L175 Difference]: Start difference. First operand has 176 places, 172 transitions, 401 flow. Second operand 18 states and 2924 transitions. [2022-11-18 18:31:28,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 277 transitions, 969 flow [2022-11-18 18:31:28,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 277 transitions, 964 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 18:31:28,022 INFO L231 Difference]: Finished difference. Result has 191 places, 199 transitions, 634 flow [2022-11-18 18:31:28,023 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} [2022-11-18 18:31:28,024 INFO L288 CegarLoopForPetriNet]: 174 programPoint places, 17 predicate places. [2022-11-18 18:31:28,024 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 199 transitions, 634 flow [2022-11-18 18:31:28,026 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) [2022-11-18 18:31:28,026 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:31:28,027 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] [2022-11-18 18:31:28,040 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e85d195a-778d-4f8b-880c-05b58fb8c5c4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-18 18:31:28,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e85d195a-778d-4f8b-880c-05b58fb8c5c4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-11-18 18:31:28,233 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-18 18:31:28,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:31:28,234 INFO L85 PathProgramCache]: Analyzing trace with hash 969802020, now seen corresponding path program 1 times [2022-11-18 18:31:28,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:31:28,234 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999455316] [2022-11-18 18:31:28,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:31:28,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:31:28,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:31:28,425 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:31:28,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:31:28,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999455316] [2022-11-18 18:31:28,426 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999455316] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:31:28,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [519873166] [2022-11-18 18:31:28,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:31:28,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:31:28,427 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e85d195a-778d-4f8b-880c-05b58fb8c5c4/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:31:28,428 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e85d195a-778d-4f8b-880c-05b58fb8c5c4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:31:28,485 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e85d195a-778d-4f8b-880c-05b58fb8c5c4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 18:31:28,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:31:28,574 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 18:31:28,576 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:31:28,622 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:31:28,622 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:31:28,623 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [519873166] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:31:28,623 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 18:31:28,623 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-18 18:31:28,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781815865] [2022-11-18 18:31:28,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:31:28,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:31:28,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:31:28,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:31:28,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-18 18:31:28,646 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 202 [2022-11-18 18:31:28,647 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) [2022-11-18 18:31:28,647 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:31:28,648 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 202 [2022-11-18 18:31:28,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:31:28,915 INFO L130 PetriNetUnfolder]: 161/799 cut-off events. [2022-11-18 18:31:28,915 INFO L131 PetriNetUnfolder]: For 136/136 co-relation queries the response was YES. [2022-11-18 18:31:28,917 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. [2022-11-18 18:31:28,921 INFO L137 encePairwiseOnDemand]: 191/202 looper letters, 53 selfloop transitions, 27 changer transitions 0/211 dead transitions. [2022-11-18 18:31:28,921 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 211 transitions, 788 flow [2022-11-18 18:31:28,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 18:31:28,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 18:31:28,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1139 transitions. [2022-11-18 18:31:28,924 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8055162659123055 [2022-11-18 18:31:28,924 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1139 transitions. [2022-11-18 18:31:28,924 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1139 transitions. [2022-11-18 18:31:28,925 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:31:28,925 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1139 transitions. [2022-11-18 18:31:28,928 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) [2022-11-18 18:31:28,930 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) [2022-11-18 18:31:28,931 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) [2022-11-18 18:31:28,931 INFO L175 Difference]: Start difference. First operand has 191 places, 199 transitions, 634 flow. Second operand 7 states and 1139 transitions. [2022-11-18 18:31:28,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 211 transitions, 788 flow [2022-11-18 18:31:28,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 211 transitions, 714 flow, removed 26 selfloop flow, removed 5 redundant places. [2022-11-18 18:31:28,939 INFO L231 Difference]: Finished difference. Result has 186 places, 191 transitions, 560 flow [2022-11-18 18:31:28,940 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} [2022-11-18 18:31:28,940 INFO L288 CegarLoopForPetriNet]: 174 programPoint places, 12 predicate places. [2022-11-18 18:31:28,941 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 191 transitions, 560 flow [2022-11-18 18:31:28,941 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) [2022-11-18 18:31:28,941 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:31:28,942 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] [2022-11-18 18:31:28,959 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e85d195a-778d-4f8b-880c-05b58fb8c5c4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-18 18:31:29,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e85d195a-778d-4f8b-880c-05b58fb8c5c4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:31:29,148 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-18 18:31:29,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:31:29,148 INFO L85 PathProgramCache]: Analyzing trace with hash -1491966717, now seen corresponding path program 2 times [2022-11-18 18:31:29,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:31:29,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915844309] [2022-11-18 18:31:29,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:31:29,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:31:29,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:31:29,520 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:31:29,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:31:29,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915844309] [2022-11-18 18:31:29,520 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915844309] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:31:29,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2082357140] [2022-11-18 18:31:29,521 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 18:31:29,521 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:31:29,521 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e85d195a-778d-4f8b-880c-05b58fb8c5c4/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:31:29,523 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e85d195a-778d-4f8b-880c-05b58fb8c5c4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:31:29,546 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e85d195a-778d-4f8b-880c-05b58fb8c5c4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 18:31:29,627 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 18:31:29,628 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:31:29,629 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-18 18:31:29,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:31:29,816 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-18 18:31:29,816 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:31:30,000 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-18 18:31:30,001 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2082357140] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:31:30,001 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 18:31:30,001 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 17 [2022-11-18 18:31:30,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586603381] [2022-11-18 18:31:30,002 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 18:31:30,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-18 18:31:30,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:31:30,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-18 18:31:30,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2022-11-18 18:31:30,007 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 202 [2022-11-18 18:31:30,010 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) [2022-11-18 18:31:30,010 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:31:30,010 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 202 [2022-11-18 18:31:30,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:31:31,376 INFO L130 PetriNetUnfolder]: 141/913 cut-off events. [2022-11-18 18:31:31,377 INFO L131 PetriNetUnfolder]: For 154/154 co-relation queries the response was YES. [2022-11-18 18:31:31,379 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. [2022-11-18 18:31:31,383 INFO L137 encePairwiseOnDemand]: 180/202 looper letters, 128 selfloop transitions, 65 changer transitions 2/309 dead transitions. [2022-11-18 18:31:31,383 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 309 transitions, 1265 flow [2022-11-18 18:31:31,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-11-18 18:31:31,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2022-11-18 18:31:31,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 7022 transitions. [2022-11-18 18:31:31,399 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7094362497474237 [2022-11-18 18:31:31,399 INFO L72 ComplementDD]: Start complementDD. Operand 49 states and 7022 transitions. [2022-11-18 18:31:31,399 INFO L73 IsDeterministic]: Start isDeterministic. Operand 49 states and 7022 transitions. [2022-11-18 18:31:31,405 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:31:31,405 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 49 states and 7022 transitions. [2022-11-18 18:31:31,420 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) [2022-11-18 18:31:31,437 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) [2022-11-18 18:31:31,443 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) [2022-11-18 18:31:31,443 INFO L175 Difference]: Start difference. First operand has 186 places, 191 transitions, 560 flow. Second operand 49 states and 7022 transitions. [2022-11-18 18:31:31,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 309 transitions, 1265 flow [2022-11-18 18:31:31,446 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 309 transitions, 1222 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-18 18:31:31,451 INFO L231 Difference]: Finished difference. Result has 230 places, 212 transitions, 767 flow [2022-11-18 18:31:31,451 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} [2022-11-18 18:31:31,453 INFO L288 CegarLoopForPetriNet]: 174 programPoint places, 56 predicate places. [2022-11-18 18:31:31,453 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 212 transitions, 767 flow [2022-11-18 18:31:31,454 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) [2022-11-18 18:31:31,454 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:31:31,455 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] [2022-11-18 18:31:31,465 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e85d195a-778d-4f8b-880c-05b58fb8c5c4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-18 18:31:31,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e85d195a-778d-4f8b-880c-05b58fb8c5c4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:31:31,661 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-18 18:31:31,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:31:31,662 INFO L85 PathProgramCache]: Analyzing trace with hash -1236121836, now seen corresponding path program 1 times [2022-11-18 18:31:31,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:31:31,662 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935681844] [2022-11-18 18:31:31,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:31:31,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:31:31,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:31:31,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:31:31,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:31:31,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935681844] [2022-11-18 18:31:31,859 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935681844] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:31:31,859 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:31:31,859 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 18:31:31,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341929575] [2022-11-18 18:31:31,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:31:31,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:31:31,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:31:31,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:31:31,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:31:31,861 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 202 [2022-11-18 18:31:31,862 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) [2022-11-18 18:31:31,862 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:31:31,862 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 202 [2022-11-18 18:31:31,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:31:32,260 INFO L130 PetriNetUnfolder]: 491/1956 cut-off events. [2022-11-18 18:31:32,260 INFO L131 PetriNetUnfolder]: For 194/243 co-relation queries the response was YES. [2022-11-18 18:31:32,266 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. [2022-11-18 18:31:32,273 INFO L137 encePairwiseOnDemand]: 198/202 looper letters, 20 selfloop transitions, 2 changer transitions 6/223 dead transitions. [2022-11-18 18:31:32,273 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 223 transitions, 844 flow [2022-11-18 18:31:32,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:31:32,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 18:31:32,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 541 transitions. [2022-11-18 18:31:32,276 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8927392739273927 [2022-11-18 18:31:32,276 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 541 transitions. [2022-11-18 18:31:32,277 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 541 transitions. [2022-11-18 18:31:32,277 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:31:32,277 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 541 transitions. [2022-11-18 18:31:32,279 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) [2022-11-18 18:31:32,280 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) [2022-11-18 18:31:32,280 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) [2022-11-18 18:31:32,281 INFO L175 Difference]: Start difference. First operand has 230 places, 212 transitions, 767 flow. Second operand 3 states and 541 transitions. [2022-11-18 18:31:32,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 223 transitions, 844 flow [2022-11-18 18:31:32,284 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 223 transitions, 761 flow, removed 9 selfloop flow, removed 15 redundant places. [2022-11-18 18:31:32,287 INFO L231 Difference]: Finished difference. Result has 216 places, 209 transitions, 689 flow [2022-11-18 18:31:32,288 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} [2022-11-18 18:31:32,291 INFO L288 CegarLoopForPetriNet]: 174 programPoint places, 42 predicate places. [2022-11-18 18:31:32,291 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 209 transitions, 689 flow [2022-11-18 18:31:32,292 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) [2022-11-18 18:31:32,292 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:31:32,292 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] [2022-11-18 18:31:32,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 18:31:32,293 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-18 18:31:32,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:31:32,293 INFO L85 PathProgramCache]: Analyzing trace with hash -616393328, now seen corresponding path program 1 times [2022-11-18 18:31:32,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:31:32,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429278493] [2022-11-18 18:31:32,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:31:32,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:31:32,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:31:32,420 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:31:32,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:31:32,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429278493] [2022-11-18 18:31:32,421 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429278493] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:31:32,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1552202595] [2022-11-18 18:31:32,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:31:32,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:31:32,422 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e85d195a-778d-4f8b-880c-05b58fb8c5c4/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:31:32,427 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e85d195a-778d-4f8b-880c-05b58fb8c5c4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:31:32,454 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e85d195a-778d-4f8b-880c-05b58fb8c5c4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 18:31:32,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:31:32,544 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-18 18:31:32,547 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:31:32,830 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-18 18:31:32,830 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:31:32,831 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1552202595] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:31:32,831 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 18:31:32,831 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [3] total 9 [2022-11-18 18:31:32,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901429241] [2022-11-18 18:31:32,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:31:32,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 18:31:32,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:31:32,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 18:31:32,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-18 18:31:32,836 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 202 [2022-11-18 18:31:32,837 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) [2022-11-18 18:31:32,837 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:31:32,837 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 202 [2022-11-18 18:31:32,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:31:33,243 INFO L130 PetriNetUnfolder]: 303/1536 cut-off events. [2022-11-18 18:31:33,243 INFO L131 PetriNetUnfolder]: For 227/227 co-relation queries the response was YES. [2022-11-18 18:31:33,248 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. [2022-11-18 18:31:33,253 INFO L137 encePairwiseOnDemand]: 192/202 looper letters, 69 selfloop transitions, 13 changer transitions 7/216 dead transitions. [2022-11-18 18:31:33,254 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 216 transitions, 882 flow [2022-11-18 18:31:33,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 18:31:33,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-18 18:31:33,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1204 transitions. [2022-11-18 18:31:33,257 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.745049504950495 [2022-11-18 18:31:33,257 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1204 transitions. [2022-11-18 18:31:33,257 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1204 transitions. [2022-11-18 18:31:33,258 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:31:33,258 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1204 transitions. [2022-11-18 18:31:33,261 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) [2022-11-18 18:31:33,264 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) [2022-11-18 18:31:33,267 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) [2022-11-18 18:31:33,267 INFO L175 Difference]: Start difference. First operand has 216 places, 209 transitions, 689 flow. Second operand 8 states and 1204 transitions. [2022-11-18 18:31:33,267 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 216 transitions, 882 flow [2022-11-18 18:31:33,275 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 216 transitions, 880 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 18:31:33,279 INFO L231 Difference]: Finished difference. Result has 218 places, 207 transitions, 707 flow [2022-11-18 18:31:33,279 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} [2022-11-18 18:31:33,282 INFO L288 CegarLoopForPetriNet]: 174 programPoint places, 44 predicate places. [2022-11-18 18:31:33,282 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 207 transitions, 707 flow [2022-11-18 18:31:33,283 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) [2022-11-18 18:31:33,283 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:31:33,283 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] [2022-11-18 18:31:33,291 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e85d195a-778d-4f8b-880c-05b58fb8c5c4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-18 18:31:33,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e85d195a-778d-4f8b-880c-05b58fb8c5c4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-18 18:31:33,488 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-18 18:31:33,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:31:33,489 INFO L85 PathProgramCache]: Analyzing trace with hash 689450420, now seen corresponding path program 1 times [2022-11-18 18:31:33,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:31:33,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83085199] [2022-11-18 18:31:33,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:31:33,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:31:33,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:31:33,606 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 18:31:33,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:31:33,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83085199] [2022-11-18 18:31:33,607 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83085199] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:31:33,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1428157971] [2022-11-18 18:31:33,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:31:33,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:31:33,608 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e85d195a-778d-4f8b-880c-05b58fb8c5c4/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:31:33,609 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e85d195a-778d-4f8b-880c-05b58fb8c5c4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:31:33,630 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e85d195a-778d-4f8b-880c-05b58fb8c5c4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-18 18:31:33,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:31:33,732 INFO L263 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-18 18:31:33,735 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:31:34,121 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:31:34,121 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:31:34,476 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:31:34,476 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1428157971] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:31:34,477 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 18:31:34,477 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 10, 10] total 19 [2022-11-18 18:31:34,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123416450] [2022-11-18 18:31:34,477 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 18:31:34,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-18 18:31:34,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:31:34,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-18 18:31:34,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2022-11-18 18:31:34,482 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 202 [2022-11-18 18:31:34,485 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) [2022-11-18 18:31:34,485 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:31:34,486 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 202 [2022-11-18 18:31:34,486 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:31:35,248 INFO L130 PetriNetUnfolder]: 406/1606 cut-off events. [2022-11-18 18:31:35,248 INFO L131 PetriNetUnfolder]: For 259/259 co-relation queries the response was YES. [2022-11-18 18:31:35,254 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. [2022-11-18 18:31:35,260 INFO L137 encePairwiseOnDemand]: 186/202 looper letters, 92 selfloop transitions, 32 changer transitions 16/247 dead transitions. [2022-11-18 18:31:35,260 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 247 transitions, 1090 flow [2022-11-18 18:31:35,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-18 18:31:35,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-11-18 18:31:35,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2239 transitions. [2022-11-18 18:31:35,266 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.692759900990099 [2022-11-18 18:31:35,266 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2239 transitions. [2022-11-18 18:31:35,266 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2239 transitions. [2022-11-18 18:31:35,267 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:31:35,268 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2239 transitions. [2022-11-18 18:31:35,273 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) [2022-11-18 18:31:35,278 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) [2022-11-18 18:31:35,280 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) [2022-11-18 18:31:35,280 INFO L175 Difference]: Start difference. First operand has 218 places, 207 transitions, 707 flow. Second operand 16 states and 2239 transitions. [2022-11-18 18:31:35,280 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 247 transitions, 1090 flow [2022-11-18 18:31:35,284 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 247 transitions, 1056 flow, removed 4 selfloop flow, removed 7 redundant places. [2022-11-18 18:31:35,287 INFO L231 Difference]: Finished difference. Result has 228 places, 208 transitions, 765 flow [2022-11-18 18:31:35,288 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} [2022-11-18 18:31:35,288 INFO L288 CegarLoopForPetriNet]: 174 programPoint places, 54 predicate places. [2022-11-18 18:31:35,289 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 208 transitions, 765 flow [2022-11-18 18:31:35,290 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) [2022-11-18 18:31:35,290 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:31:35,291 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] [2022-11-18 18:31:35,303 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e85d195a-778d-4f8b-880c-05b58fb8c5c4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-18 18:31:35,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e85d195a-778d-4f8b-880c-05b58fb8c5c4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:31:35,497 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-18 18:31:35,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:31:35,498 INFO L85 PathProgramCache]: Analyzing trace with hash -968205292, now seen corresponding path program 2 times [2022-11-18 18:31:35,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:31:35,498 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464052970] [2022-11-18 18:31:35,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:31:35,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:31:35,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:31:35,639 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-18 18:31:35,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:31:35,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464052970] [2022-11-18 18:31:35,641 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464052970] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:31:35,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [65326388] [2022-11-18 18:31:35,641 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 18:31:35,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:31:35,643 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e85d195a-778d-4f8b-880c-05b58fb8c5c4/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:31:35,644 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e85d195a-778d-4f8b-880c-05b58fb8c5c4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:31:35,666 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e85d195a-778d-4f8b-880c-05b58fb8c5c4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-18 18:31:35,757 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 18:31:35,758 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:31:35,759 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 18:31:35,764 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:31:35,957 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-18 18:31:35,957 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:31:36,160 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-18 18:31:36,160 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [65326388] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:31:36,161 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 18:31:36,161 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-11-18 18:31:36,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679722638] [2022-11-18 18:31:36,161 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 18:31:36,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 18:31:36,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:31:36,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 18:31:36,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-18 18:31:36,164 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 202 [2022-11-18 18:31:36,166 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) [2022-11-18 18:31:36,166 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:31:36,166 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 202 [2022-11-18 18:31:36,166 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:31:36,652 INFO L130 PetriNetUnfolder]: 503/1812 cut-off events. [2022-11-18 18:31:36,653 INFO L131 PetriNetUnfolder]: For 465/465 co-relation queries the response was YES. [2022-11-18 18:31:36,658 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. [2022-11-18 18:31:36,660 INFO L137 encePairwiseOnDemand]: 195/202 looper letters, 9 selfloop transitions, 4 changer transitions 85/237 dead transitions. [2022-11-18 18:31:36,661 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 237 transitions, 951 flow [2022-11-18 18:31:36,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 18:31:36,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 18:31:36,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1528 transitions. [2022-11-18 18:31:36,664 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8404840484048405 [2022-11-18 18:31:36,664 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1528 transitions. [2022-11-18 18:31:36,664 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1528 transitions. [2022-11-18 18:31:36,666 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:31:36,666 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1528 transitions. [2022-11-18 18:31:36,672 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) [2022-11-18 18:31:36,675 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) [2022-11-18 18:31:36,676 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) [2022-11-18 18:31:36,676 INFO L175 Difference]: Start difference. First operand has 228 places, 208 transitions, 765 flow. Second operand 9 states and 1528 transitions. [2022-11-18 18:31:36,677 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 237 transitions, 951 flow [2022-11-18 18:31:36,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 237 transitions, 892 flow, removed 6 selfloop flow, removed 11 redundant places. [2022-11-18 18:31:36,683 INFO L231 Difference]: Finished difference. Result has 222 places, 152 transitions, 581 flow [2022-11-18 18:31:36,684 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} [2022-11-18 18:31:36,685 INFO L288 CegarLoopForPetriNet]: 174 programPoint places, 48 predicate places. [2022-11-18 18:31:36,685 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 152 transitions, 581 flow [2022-11-18 18:31:36,686 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) [2022-11-18 18:31:36,686 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:31:36,686 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] [2022-11-18 18:31:36,702 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e85d195a-778d-4f8b-880c-05b58fb8c5c4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-18 18:31:36,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e85d195a-778d-4f8b-880c-05b58fb8c5c4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:31:36,892 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-18 18:31:36,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:31:36,893 INFO L85 PathProgramCache]: Analyzing trace with hash 1899380846, now seen corresponding path program 1 times [2022-11-18 18:31:36,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:31:36,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872787275] [2022-11-18 18:31:36,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:31:36,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:31:36,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:31:37,242 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:31:37,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:31:37,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872787275] [2022-11-18 18:31:37,243 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872787275] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:31:37,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1691745128] [2022-11-18 18:31:37,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:31:37,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:31:37,244 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e85d195a-778d-4f8b-880c-05b58fb8c5c4/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:31:37,246 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e85d195a-778d-4f8b-880c-05b58fb8c5c4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:31:37,274 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e85d195a-778d-4f8b-880c-05b58fb8c5c4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-18 18:31:37,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:31:37,370 INFO L263 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-18 18:31:37,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:31:37,515 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:31:37,516 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:31:37,875 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:31:37,875 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1691745128] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:31:37,875 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 18:31:37,876 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 31 [2022-11-18 18:31:37,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571804829] [2022-11-18 18:31:37,878 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 18:31:37,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-18 18:31:37,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:31:37,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-18 18:31:37,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=271, Invalid=721, Unknown=0, NotChecked=0, Total=992 [2022-11-18 18:31:37,888 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 202 [2022-11-18 18:31:37,895 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) [2022-11-18 18:31:37,895 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:31:37,895 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 202 [2022-11-18 18:31:37,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:31:38,918 INFO L130 PetriNetUnfolder]: 16/493 cut-off events. [2022-11-18 18:31:38,919 INFO L131 PetriNetUnfolder]: For 454/454 co-relation queries the response was YES. [2022-11-18 18:31:38,920 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. [2022-11-18 18:31:38,922 INFO L137 encePairwiseOnDemand]: 190/202 looper letters, 140 selfloop transitions, 102 changer transitions 0/331 dead transitions. [2022-11-18 18:31:38,922 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 331 transitions, 1844 flow [2022-11-18 18:31:38,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-11-18 18:31:38,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2022-11-18 18:31:38,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 7026 transitions. [2022-11-18 18:31:38,932 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7905040504050405 [2022-11-18 18:31:38,933 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 7026 transitions. [2022-11-18 18:31:38,933 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 7026 transitions. [2022-11-18 18:31:38,935 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:31:38,935 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 7026 transitions. [2022-11-18 18:31:38,947 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) [2022-11-18 18:31:38,960 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) [2022-11-18 18:31:38,964 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) [2022-11-18 18:31:38,964 INFO L175 Difference]: Start difference. First operand has 222 places, 152 transitions, 581 flow. Second operand 44 states and 7026 transitions. [2022-11-18 18:31:38,964 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 331 transitions, 1844 flow [2022-11-18 18:31:38,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 331 transitions, 1835 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-18 18:31:38,974 INFO L231 Difference]: Finished difference. Result has 214 places, 212 transitions, 1241 flow [2022-11-18 18:31:38,975 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} [2022-11-18 18:31:38,975 INFO L288 CegarLoopForPetriNet]: 174 programPoint places, 40 predicate places. [2022-11-18 18:31:38,975 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 212 transitions, 1241 flow [2022-11-18 18:31:38,977 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) [2022-11-18 18:31:38,977 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:31:38,978 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] [2022-11-18 18:31:38,984 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e85d195a-778d-4f8b-880c-05b58fb8c5c4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-18 18:31:39,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e85d195a-778d-4f8b-880c-05b58fb8c5c4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-11-18 18:31:39,184 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-18 18:31:39,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:31:39,184 INFO L85 PathProgramCache]: Analyzing trace with hash -213671314, now seen corresponding path program 2 times [2022-11-18 18:31:39,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:31:39,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2147347420] [2022-11-18 18:31:39,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:31:39,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:31:39,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:31:40,264 INFO L134 CoverageAnalysis]: Checked inductivity of 903 backedges. 0 proven. 903 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:31:40,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:31:40,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2147347420] [2022-11-18 18:31:40,265 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2147347420] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:31:40,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1088084900] [2022-11-18 18:31:40,265 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 18:31:40,265 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:31:40,265 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e85d195a-778d-4f8b-880c-05b58fb8c5c4/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:31:40,266 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e85d195a-778d-4f8b-880c-05b58fb8c5c4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:31:40,286 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e85d195a-778d-4f8b-880c-05b58fb8c5c4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-18 18:31:40,384 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 18:31:40,384 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:31:40,385 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-18 18:31:40,388 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:31:40,745 INFO L134 CoverageAnalysis]: Checked inductivity of 903 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 833 trivial. 0 not checked. [2022-11-18 18:31:40,745 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:31:41,140 INFO L134 CoverageAnalysis]: Checked inductivity of 903 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 833 trivial. 0 not checked. [2022-11-18 18:31:41,140 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1088084900] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:31:41,140 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 18:31:41,140 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 7, 7] total 37 [2022-11-18 18:31:41,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728618238] [2022-11-18 18:31:41,141 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 18:31:41,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-11-18 18:31:41,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:31:41,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-11-18 18:31:41,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=313, Invalid=1093, Unknown=0, NotChecked=0, Total=1406 [2022-11-18 18:31:41,150 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 202 [2022-11-18 18:31:41,154 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) [2022-11-18 18:31:41,154 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:31:41,154 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 202 [2022-11-18 18:31:41,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:31:44,843 INFO L130 PetriNetUnfolder]: 18/541 cut-off events. [2022-11-18 18:31:44,844 INFO L131 PetriNetUnfolder]: For 984/984 co-relation queries the response was YES. [2022-11-18 18:31:44,845 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. [2022-11-18 18:31:44,846 INFO L137 encePairwiseOnDemand]: 184/202 looper letters, 0 selfloop transitions, 0 changer transitions 367/367 dead transitions. [2022-11-18 18:31:44,846 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 367 transitions, 2456 flow [2022-11-18 18:31:44,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2022-11-18 18:31:44,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2022-11-18 18:31:44,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 16113 transitions. [2022-11-18 18:31:44,866 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6759942943446887 [2022-11-18 18:31:44,867 INFO L72 ComplementDD]: Start complementDD. Operand 118 states and 16113 transitions. [2022-11-18 18:31:44,867 INFO L73 IsDeterministic]: Start isDeterministic. Operand 118 states and 16113 transitions. [2022-11-18 18:31:44,872 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:31:44,872 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 118 states and 16113 transitions. [2022-11-18 18:31:44,895 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) [2022-11-18 18:31:44,930 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) [2022-11-18 18:31:44,938 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) [2022-11-18 18:31:44,939 INFO L175 Difference]: Start difference. First operand has 214 places, 212 transitions, 1241 flow. Second operand 118 states and 16113 transitions. [2022-11-18 18:31:44,939 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 367 transitions, 2456 flow [2022-11-18 18:31:44,948 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 367 transitions, 2333 flow, removed 3 selfloop flow, removed 29 redundant places. [2022-11-18 18:31:44,951 INFO L231 Difference]: Finished difference. Result has 301 places, 0 transitions, 0 flow [2022-11-18 18:31:44,952 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} [2022-11-18 18:31:44,953 INFO L288 CegarLoopForPetriNet]: 174 programPoint places, 127 predicate places. [2022-11-18 18:31:44,953 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 0 transitions, 0 flow [2022-11-18 18:31:44,955 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) [2022-11-18 18:31:44,957 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 18 remaining) [2022-11-18 18:31:44,958 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 18 remaining) [2022-11-18 18:31:44,958 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 18 remaining) [2022-11-18 18:31:44,958 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 18 remaining) [2022-11-18 18:31:44,959 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 18 remaining) [2022-11-18 18:31:44,959 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 18 remaining) [2022-11-18 18:31:44,959 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 18 remaining) [2022-11-18 18:31:44,959 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 18 remaining) [2022-11-18 18:31:44,959 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 18 remaining) [2022-11-18 18:31:44,960 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 18 remaining) [2022-11-18 18:31:44,960 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 18 remaining) [2022-11-18 18:31:44,960 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 18 remaining) [2022-11-18 18:31:44,960 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 18 remaining) [2022-11-18 18:31:44,960 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 18 remaining) [2022-11-18 18:31:44,960 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 18 remaining) [2022-11-18 18:31:44,961 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 18 remaining) [2022-11-18 18:31:44,961 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 18 remaining) [2022-11-18 18:31:44,961 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 18 remaining) [2022-11-18 18:31:44,983 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e85d195a-778d-4f8b-880c-05b58fb8c5c4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-11-18 18:31:45,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e85d195a-778d-4f8b-880c-05b58fb8c5c4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-18 18:31:45,163 INFO L444 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1, 1, 1, 1] [2022-11-18 18:31:45,168 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-18 18:31:45,169 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-18 18:31:45,177 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 06:31:45 BasicIcfg [2022-11-18 18:31:45,181 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-18 18:31:45,182 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-18 18:31:45,182 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-18 18:31:45,182 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-18 18:31:45,183 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:31:25" (3/4) ... [2022-11-18 18:31:45,186 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-18 18:31:45,191 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-11-18 18:31:45,192 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-11-18 18:31:45,200 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 25 nodes and edges [2022-11-18 18:31:45,200 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-18 18:31:45,201 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-18 18:31:45,201 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-18 18:31:45,256 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e85d195a-778d-4f8b-880c-05b58fb8c5c4/bin/uautomizer-TMbwUNV5ro/witness.graphml [2022-11-18 18:31:45,257 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-18 18:31:45,258 INFO L158 Benchmark]: Toolchain (without parser) took 21118.39ms. Allocated memory was 117.4MB in the beginning and 272.6MB in the end (delta: 155.2MB). Free memory was 80.4MB in the beginning and 234.2MB in the end (delta: -153.8MB). Peak memory consumption was 2.0MB. Max. memory is 16.1GB. [2022-11-18 18:31:45,258 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 117.4MB. Free memory was 87.7MB in the beginning and 87.7MB in the end (delta: 24.2kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 18:31:45,258 INFO L158 Benchmark]: CACSL2BoogieTranslator took 415.37ms. Allocated memory is still 117.4MB. Free memory was 80.2MB in the beginning and 89.6MB in the end (delta: -9.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-18 18:31:45,259 INFO L158 Benchmark]: Boogie Procedure Inliner took 71.21ms. Allocated memory is still 117.4MB. Free memory was 89.6MB in the beginning and 87.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-18 18:31:45,259 INFO L158 Benchmark]: Boogie Preprocessor took 51.36ms. Allocated memory is still 117.4MB. Free memory was 87.5MB in the beginning and 86.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-18 18:31:45,259 INFO L158 Benchmark]: RCFGBuilder took 852.20ms. Allocated memory is still 117.4MB. Free memory was 86.0MB in the beginning and 56.6MB in the end (delta: 29.4MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2022-11-18 18:31:45,260 INFO L158 Benchmark]: TraceAbstraction took 19646.73ms. Allocated memory was 117.4MB in the beginning and 272.6MB in the end (delta: 155.2MB). Free memory was 56.0MB in the beginning and 237.9MB in the end (delta: -181.9MB). Peak memory consumption was 132.9MB. Max. memory is 16.1GB. [2022-11-18 18:31:45,260 INFO L158 Benchmark]: Witness Printer took 74.83ms. Allocated memory is still 272.6MB. Free memory was 237.9MB in the beginning and 234.2MB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-18 18:31:45,266 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 117.4MB. Free memory was 87.7MB in the beginning and 87.7MB in the end (delta: 24.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 415.37ms. Allocated memory is still 117.4MB. Free memory was 80.2MB in the beginning and 89.6MB in the end (delta: -9.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 71.21ms. Allocated memory is still 117.4MB. Free memory was 89.6MB in the beginning and 87.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 51.36ms. Allocated memory is still 117.4MB. Free memory was 87.5MB in the beginning and 86.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 852.20ms. Allocated memory is still 117.4MB. Free memory was 86.0MB in the beginning and 56.6MB in the end (delta: 29.4MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * TraceAbstraction took 19646.73ms. Allocated memory was 117.4MB in the beginning and 272.6MB in the end (delta: 155.2MB). Free memory was 56.0MB in the beginning and 237.9MB in the end (delta: -181.9MB). Peak memory consumption was 132.9MB. Max. memory is 16.1GB. * Witness Printer took 74.83ms. Allocated memory is still 272.6MB. Free memory was 237.9MB in the beginning and 234.2MB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. 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: 19.5s, OverallIterations: 10, TraceHistogramMax: 15, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 9.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2868 SdHoareTripleChecker+Valid, 2.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2868 mSDsluCounter, 519 SdHoareTripleChecker+Invalid, 1.6s 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, 6.2s 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, 6.1s 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! [2022-11-18 18:31:45,293 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e85d195a-778d-4f8b-880c-05b58fb8c5c4/bin/uautomizer-TMbwUNV5ro/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