./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_90-arrayloop2_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 5e519f3a 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_348fcf73-3cb4-448f-a764-1b3e031dae9b/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_348fcf73-3cb4-448f-a764-1b3e031dae9b/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_348fcf73-3cb4-448f-a764-1b3e031dae9b/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_348fcf73-3cb4-448f-a764-1b3e031dae9b/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_90-arrayloop2_racing.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_348fcf73-3cb4-448f-a764-1b3e031dae9b/bin/uautomizer-Dbtcem3rbc/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_348fcf73-3cb4-448f-a764-1b3e031dae9b/bin/uautomizer-Dbtcem3rbc --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 f41f3c018db74ffccd5759d166eb9816a1bf73b1747e3e539ecb5bf51feb56af --- 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-5e519f3 [2022-11-02 20:18:03,597 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:18:03,600 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:18:03,649 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:18:03,650 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:18:03,654 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:18:03,656 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:18:03,661 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:18:03,664 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:18:03,669 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:18:03,670 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:18:03,673 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:18:03,674 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:18:03,676 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:18:03,678 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:18:03,680 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:18:03,682 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:18:03,683 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:18:03,685 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:18:03,690 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:18:03,691 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:18:03,693 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:18:03,694 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:18:03,695 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:18:03,703 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:18:03,703 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:18:03,704 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:18:03,705 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:18:03,706 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:18:03,707 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:18:03,707 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:18:03,710 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:18:03,712 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:18:03,713 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:18:03,714 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:18:03,714 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:18:03,715 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:18:03,716 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:18:03,716 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:18:03,717 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:18:03,717 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:18:03,718 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_348fcf73-3cb4-448f-a764-1b3e031dae9b/bin/uautomizer-Dbtcem3rbc/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-02 20:18:03,756 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:18:03,756 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:18:03,757 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:18:03,757 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:18:03,758 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:18:03,758 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:18:03,759 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:18:03,760 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:18:03,760 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:18:03,760 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:18:03,761 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 20:18:03,761 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-02 20:18:03,761 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:18:03,762 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 20:18:03,762 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:18:03,762 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:18:03,762 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:18:03,762 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:18:03,763 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-02 20:18:03,763 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 20:18:03,763 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:18:03,763 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:18:03,763 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:18:03,764 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:18:03,764 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:18:03,764 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:18:03,765 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:18:03,766 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:18:03,766 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:18:03,766 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:18:03,766 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:18:03,766 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:18:03,767 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:18:03,767 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_348fcf73-3cb4-448f-a764-1b3e031dae9b/bin/uautomizer-Dbtcem3rbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_348fcf73-3cb4-448f-a764-1b3e031dae9b/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f41f3c018db74ffccd5759d166eb9816a1bf73b1747e3e539ecb5bf51feb56af [2022-11-02 20:18:04,049 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:18:04,083 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:18:04,087 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:18:04,089 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:18:04,090 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:18:04,091 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_348fcf73-3cb4-448f-a764-1b3e031dae9b/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/goblint-regression/28-race_reach_90-arrayloop2_racing.i [2022-11-02 20:18:04,169 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_348fcf73-3cb4-448f-a764-1b3e031dae9b/bin/uautomizer-Dbtcem3rbc/data/3429252d8/6c3294be966f4089ae4e3cd6cafc2552/FLAG68e2c5299 [2022-11-02 20:18:04,759 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:18:04,760 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_348fcf73-3cb4-448f-a764-1b3e031dae9b/sv-benchmarks/c/goblint-regression/28-race_reach_90-arrayloop2_racing.i [2022-11-02 20:18:04,780 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_348fcf73-3cb4-448f-a764-1b3e031dae9b/bin/uautomizer-Dbtcem3rbc/data/3429252d8/6c3294be966f4089ae4e3cd6cafc2552/FLAG68e2c5299 [2022-11-02 20:18:05,000 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_348fcf73-3cb4-448f-a764-1b3e031dae9b/bin/uautomizer-Dbtcem3rbc/data/3429252d8/6c3294be966f4089ae4e3cd6cafc2552 [2022-11-02 20:18:05,005 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:18:05,006 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:18:05,011 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:18:05,011 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:18:05,015 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:18:05,016 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:18:05" (1/1) ... [2022-11-02 20:18:05,017 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2fe5bf4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:18:05, skipping insertion in model container [2022-11-02 20:18:05,017 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:18:05" (1/1) ... [2022-11-02 20:18:05,025 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:18:05,095 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:18:05,670 WARN L230 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_348fcf73-3cb4-448f-a764-1b3e031dae9b/sv-benchmarks/c/goblint-regression/28-race_reach_90-arrayloop2_racing.i[47038,47051] [2022-11-02 20:18:05,687 WARN L1543 CHandler]: Possible shadowing of function new [2022-11-02 20:18:05,687 WARN L1543 CHandler]: Possible shadowing of function new [2022-11-02 20:18:05,688 WARN L1543 CHandler]: Possible shadowing of function new [2022-11-02 20:18:05,689 WARN L1543 CHandler]: Possible shadowing of function new [2022-11-02 20:18:05,743 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:18:05,758 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:18:05,790 WARN L230 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_348fcf73-3cb4-448f-a764-1b3e031dae9b/sv-benchmarks/c/goblint-regression/28-race_reach_90-arrayloop2_racing.i[47038,47051] [2022-11-02 20:18:05,794 WARN L1543 CHandler]: Possible shadowing of function new [2022-11-02 20:18:05,794 WARN L1543 CHandler]: Possible shadowing of function new [2022-11-02 20:18:05,795 WARN L1543 CHandler]: Possible shadowing of function new [2022-11-02 20:18:05,795 WARN L1543 CHandler]: Possible shadowing of function new [2022-11-02 20:18:05,812 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:18:05,873 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:18:05,874 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:18:05 WrapperNode [2022-11-02 20:18:05,874 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:18:05,875 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:18:05,875 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:18:05,875 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:18:05,883 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:18:05" (1/1) ... [2022-11-02 20:18:05,903 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:18:05" (1/1) ... [2022-11-02 20:18:05,943 INFO L138 Inliner]: procedures = 278, calls = 64, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 328 [2022-11-02 20:18:05,944 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:18:05,945 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:18:05,945 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:18:05,945 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:18:05,955 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:18:05" (1/1) ... [2022-11-02 20:18:05,955 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:18:05" (1/1) ... [2022-11-02 20:18:05,962 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:18:05" (1/1) ... [2022-11-02 20:18:05,962 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:18:05" (1/1) ... [2022-11-02 20:18:05,975 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:18:05" (1/1) ... [2022-11-02 20:18:05,982 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:18:05" (1/1) ... [2022-11-02 20:18:05,985 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:18:05" (1/1) ... [2022-11-02 20:18:05,988 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:18:05" (1/1) ... [2022-11-02 20:18:05,992 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:18:05,993 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:18:05,994 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:18:05,994 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:18:05,995 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:18:05" (1/1) ... [2022-11-02 20:18:06,015 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:18:06,033 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_348fcf73-3cb4-448f-a764-1b3e031dae9b/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:18:06,050 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_348fcf73-3cb4-448f-a764-1b3e031dae9b/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:18:06,059 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_348fcf73-3cb4-448f-a764-1b3e031dae9b/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:18:06,094 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 20:18:06,094 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-02 20:18:06,095 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2022-11-02 20:18:06,095 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2022-11-02 20:18:06,095 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 20:18:06,095 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-02 20:18:06,095 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2022-11-02 20:18:06,095 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2022-11-02 20:18:06,095 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-02 20:18:06,095 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-02 20:18:06,095 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-02 20:18:06,095 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:18:06,096 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-02 20:18:06,096 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 20:18:06,096 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:18:06,096 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:18:06,098 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-02 20:18:06,259 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:18:06,261 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:18:07,058 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:18:07,070 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:18:07,070 INFO L300 CfgBuilder]: Removed 30 assume(true) statements. [2022-11-02 20:18:07,073 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:18:07 BoogieIcfgContainer [2022-11-02 20:18:07,073 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:18:07,075 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:18:07,075 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:18:07,087 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:18:07,087 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:18:05" (1/3) ... [2022-11-02 20:18:07,088 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@548aa7ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:18:07, skipping insertion in model container [2022-11-02 20:18:07,089 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:18:05" (2/3) ... [2022-11-02 20:18:07,091 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@548aa7ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:18:07, skipping insertion in model container [2022-11-02 20:18:07,092 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:18:07" (3/3) ... [2022-11-02 20:18:07,093 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_90-arrayloop2_racing.i [2022-11-02 20:18:07,103 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-02 20:18:07,114 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:18:07,115 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 28 error locations. [2022-11-02 20:18:07,115 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-02 20:18:07,317 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-11-02 20:18:07,380 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-02 20:18:07,397 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 331 places, 372 transitions, 766 flow [2022-11-02 20:18:07,402 INFO L112 LiptonReduction]: Starting Lipton reduction on Petri net that has 331 places, 372 transitions, 766 flow [2022-11-02 20:18:07,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 331 places, 372 transitions, 766 flow [2022-11-02 20:18:07,699 INFO L130 PetriNetUnfolder]: 77/603 cut-off events. [2022-11-02 20:18:07,699 INFO L131 PetriNetUnfolder]: For 8/13 co-relation queries the response was YES. [2022-11-02 20:18:07,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 623 conditions, 603 events. 77/603 cut-off events. For 8/13 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 3100 event pairs, 0 based on Foata normal form. 0/474 useless extension candidates. Maximal degree in co-relation 303. Up to 8 conditions per place. [2022-11-02 20:18:07,750 INFO L118 LiptonReduction]: Number of co-enabled transitions 45816 [2022-11-02 20:19:06,884 WARN L234 SmtUtils]: Spent 21.77s on a formula simplification. DAG size of input: 188 DAG size of output: 186 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-02 20:19:19,742 WARN L234 SmtUtils]: Spent 12.86s on a formula simplification that was a NOOP. DAG size: 178 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-02 20:19:39,480 WARN L234 SmtUtils]: Spent 19.73s on a formula simplification. DAG size of input: 188 DAG size of output: 186 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-02 20:19:47,780 WARN L234 SmtUtils]: Spent 8.30s on a formula simplification that was a NOOP. DAG size: 178 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-02 20:20:10,950 WARN L234 SmtUtils]: Spent 22.88s on a formula simplification. DAG size of input: 190 DAG size of output: 188 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-02 20:20:19,456 WARN L234 SmtUtils]: Spent 8.50s on a formula simplification that was a NOOP. DAG size: 180 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-02 20:20:35,050 WARN L234 SmtUtils]: Spent 15.59s on a formula simplification. DAG size of input: 190 DAG size of output: 188 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-02 20:20:44,263 WARN L234 SmtUtils]: Spent 9.21s on a formula simplification that was a NOOP. DAG size: 180 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-02 20:20:44,269 INFO L133 LiptonReduction]: Checked pairs total: 71145 [2022-11-02 20:20:44,269 INFO L135 LiptonReduction]: Total number of compositions: 360 [2022-11-02 20:20:44,276 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 93 places, 121 transitions, 264 flow [2022-11-02 20:20:44,662 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 9416 states, 8900 states have (on average 3.8741573033707866) internal successors, (34480), 9415 states have internal predecessors, (34480), 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) [2022-11-02 20:20:44,684 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:20:44,690 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=FINITE_AUTOMATA, 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;@26ea5b05, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:20:44,691 INFO L358 AbstractCegarLoop]: Starting to check reachability of 44 error locations. [2022-11-02 20:20:44,736 INFO L276 IsEmpty]: Start isEmpty. Operand has 9416 states, 8900 states have (on average 3.8741573033707866) internal successors, (34480), 9415 states have internal predecessors, (34480), 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) [2022-11-02 20:20:44,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-02 20:20:44,741 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:20:44,742 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-02 20:20:44,742 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-11-02 20:20:44,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:20:44,751 INFO L85 PathProgramCache]: Analyzing trace with hash 1513943, now seen corresponding path program 1 times [2022-11-02 20:20:44,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:20:44,761 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621656472] [2022-11-02 20:20:44,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:20:44,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:20:44,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:20:45,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:20:45,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:20:45,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621656472] [2022-11-02 20:20:45,055 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621656472] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:20:45,055 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:20:45,056 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:20:45,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958974765] [2022-11-02 20:20:45,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:20:45,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:20:45,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:20:45,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:20:45,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:20:45,151 INFO L87 Difference]: Start difference. First operand has 9416 states, 8900 states have (on average 3.8741573033707866) internal successors, (34480), 9415 states have internal predecessors, (34480), 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) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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) [2022-11-02 20:20:45,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:20:45,929 INFO L93 Difference]: Finished difference Result 8806 states and 25939 transitions. [2022-11-02 20:20:45,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:20:45,931 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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) Word has length 3 [2022-11-02 20:20:45,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:20:46,087 INFO L225 Difference]: With dead ends: 8806 [2022-11-02 20:20:46,089 INFO L226 Difference]: Without dead ends: 8799 [2022-11-02 20:20:46,090 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:20:46,099 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 0 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-02 20:20:46,101 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 26 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-02 20:20:46,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8799 states. [2022-11-02 20:20:46,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8799 to 8799. [2022-11-02 20:20:46,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8799 states, 8389 states have (on average 3.0904756228394326) internal successors, (25926), 8798 states have internal predecessors, (25926), 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) [2022-11-02 20:20:46,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8799 states to 8799 states and 25926 transitions. [2022-11-02 20:20:46,797 INFO L78 Accepts]: Start accepts. Automaton has 8799 states and 25926 transitions. Word has length 3 [2022-11-02 20:20:46,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:20:46,798 INFO L495 AbstractCegarLoop]: Abstraction has 8799 states and 25926 transitions. [2022-11-02 20:20:46,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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) [2022-11-02 20:20:46,799 INFO L276 IsEmpty]: Start isEmpty. Operand 8799 states and 25926 transitions. [2022-11-02 20:20:46,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-02 20:20:46,799 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:20:46,799 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-02 20:20:46,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:20:46,800 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-11-02 20:20:46,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:20:46,801 INFO L85 PathProgramCache]: Analyzing trace with hash 46937871, now seen corresponding path program 1 times [2022-11-02 20:20:46,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:20:46,815 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579552194] [2022-11-02 20:20:46,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:20:46,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:20:46,951 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 20:20:46,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2041082117] [2022-11-02 20:20:46,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:20:46,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:20:46,952 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_348fcf73-3cb4-448f-a764-1b3e031dae9b/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:20:46,959 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_348fcf73-3cb4-448f-a764-1b3e031dae9b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:20:47,001 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_348fcf73-3cb4-448f-a764-1b3e031dae9b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-02 20:20:47,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:20:47,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 20:20:47,197 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:20:47,275 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:20:47,275 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:20:47,309 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:20:47,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:20:47,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579552194] [2022-11-02 20:20:47,310 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 20:20:47,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2041082117] [2022-11-02 20:20:47,310 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2041082117] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:20:47,310 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:20:47,310 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2022-11-02 20:20:47,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232957492] [2022-11-02 20:20:47,311 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:20:47,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:20:47,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:20:47,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:20:47,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:20:47,313 INFO L87 Difference]: Start difference. First operand 8799 states and 25926 transitions. Second operand has 6 states, 5 states have (on average 1.4) internal successors, (7), 6 states have internal predecessors, (7), 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) [2022-11-02 20:20:48,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:20:48,561 INFO L93 Difference]: Finished difference Result 8806 states and 25938 transitions. [2022-11-02 20:20:48,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 20:20:48,575 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 6 states have internal predecessors, (7), 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) Word has length 4 [2022-11-02 20:20:48,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:20:48,720 INFO L225 Difference]: With dead ends: 8806 [2022-11-02 20:20:48,720 INFO L226 Difference]: Without dead ends: 8806 [2022-11-02 20:20:48,721 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:20:48,746 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 6 mSDsluCounter, 352 mSDsCounter, 0 mSdLazyCounter, 410 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 410 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:20:48,746 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 65 Invalid, 425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 410 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-02 20:20:48,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8806 states. [2022-11-02 20:20:49,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8806 to 8802. [2022-11-02 20:20:49,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8802 states, 8392 states have (on average 3.090800762631077) internal successors, (25938), 8801 states have internal predecessors, (25938), 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) [2022-11-02 20:20:49,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8802 states to 8802 states and 25938 transitions. [2022-11-02 20:20:49,221 INFO L78 Accepts]: Start accepts. Automaton has 8802 states and 25938 transitions. Word has length 4 [2022-11-02 20:20:49,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:20:49,222 INFO L495 AbstractCegarLoop]: Abstraction has 8802 states and 25938 transitions. [2022-11-02 20:20:49,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 6 states have internal predecessors, (7), 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) [2022-11-02 20:20:49,222 INFO L276 IsEmpty]: Start isEmpty. Operand 8802 states and 25938 transitions. [2022-11-02 20:20:49,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-02 20:20:49,223 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:20:49,223 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-02 20:20:49,287 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_348fcf73-3cb4-448f-a764-1b3e031dae9b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-02 20:20:49,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_348fcf73-3cb4-448f-a764-1b3e031dae9b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-11-02 20:20:49,431 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-11-02 20:20:49,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:20:49,432 INFO L85 PathProgramCache]: Analyzing trace with hash 46938006, now seen corresponding path program 1 times [2022-11-02 20:20:49,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:20:49,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931645764] [2022-11-02 20:20:49,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:20:49,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:20:49,520 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 20:20:49,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [926991379] [2022-11-02 20:20:49,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:20:49,521 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:20:49,521 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_348fcf73-3cb4-448f-a764-1b3e031dae9b/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:20:49,535 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_348fcf73-3cb4-448f-a764-1b3e031dae9b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:20:49,619 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_348fcf73-3cb4-448f-a764-1b3e031dae9b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-02 20:20:49,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:20:49,941 INFO L263 TraceCheckSpWp]: Trace formula consists of 557 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 20:20:49,942 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:20:49,957 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:20:49,958 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:20:49,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:20:49,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931645764] [2022-11-02 20:20:49,961 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 20:20:49,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [926991379] [2022-11-02 20:20:49,964 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [926991379] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:20:49,964 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:20:49,964 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:20:49,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263786482] [2022-11-02 20:20:49,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:20:49,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:20:49,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:20:49,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:20:49,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:20:49,966 INFO L87 Difference]: Start difference. First operand 8802 states and 25938 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 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) [2022-11-02 20:20:50,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:20:50,674 INFO L93 Difference]: Finished difference Result 17592 states and 51851 transitions. [2022-11-02 20:20:50,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:20:50,675 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 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) Word has length 4 [2022-11-02 20:20:50,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:20:50,778 INFO L225 Difference]: With dead ends: 17592 [2022-11-02 20:20:50,778 INFO L226 Difference]: Without dead ends: 17592 [2022-11-02 20:20:50,778 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:20:50,788 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 186 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-02 20:20:50,791 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [186 Valid, 39 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-02 20:20:50,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17592 states. [2022-11-02 20:20:51,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17592 to 8801. [2022-11-02 20:20:51,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8801 states, 8392 states have (on average 3.090324118207817) internal successors, (25934), 8800 states have internal predecessors, (25934), 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) [2022-11-02 20:20:51,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8801 states to 8801 states and 25934 transitions. [2022-11-02 20:20:51,301 INFO L78 Accepts]: Start accepts. Automaton has 8801 states and 25934 transitions. Word has length 4 [2022-11-02 20:20:51,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:20:51,302 INFO L495 AbstractCegarLoop]: Abstraction has 8801 states and 25934 transitions. [2022-11-02 20:20:51,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 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) [2022-11-02 20:20:51,302 INFO L276 IsEmpty]: Start isEmpty. Operand 8801 states and 25934 transitions. [2022-11-02 20:20:51,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-02 20:20:51,303 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:20:51,303 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-02 20:20:51,348 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_348fcf73-3cb4-448f-a764-1b3e031dae9b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-02 20:20:51,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_348fcf73-3cb4-448f-a764-1b3e031dae9b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:20:51,529 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-11-02 20:20:51,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:20:51,530 INFO L85 PathProgramCache]: Analyzing trace with hash 46937767, now seen corresponding path program 1 times [2022-11-02 20:20:51,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:20:51,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173544723] [2022-11-02 20:20:51,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:20:51,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:20:51,567 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 20:20:51,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1459369113] [2022-11-02 20:20:51,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:20:51,576 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:20:51,576 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_348fcf73-3cb4-448f-a764-1b3e031dae9b/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:20:51,580 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_348fcf73-3cb4-448f-a764-1b3e031dae9b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:20:51,601 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_348fcf73-3cb4-448f-a764-1b3e031dae9b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-02 20:20:51,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:20:51,781 INFO L263 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 20:20:51,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:20:51,797 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:20:51,797 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:20:51,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:20:51,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173544723] [2022-11-02 20:20:51,805 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 20:20:51,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1459369113] [2022-11-02 20:20:51,806 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1459369113] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:20:51,806 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:20:51,806 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-02 20:20:51,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040325391] [2022-11-02 20:20:51,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:20:51,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:20:51,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:20:51,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:20:51,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:20:51,808 INFO L87 Difference]: Start difference. First operand 8801 states and 25934 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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) [2022-11-02 20:20:52,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:20:52,387 INFO L93 Difference]: Finished difference Result 8807 states and 25941 transitions. [2022-11-02 20:20:52,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:20:52,388 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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) Word has length 4 [2022-11-02 20:20:52,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:20:52,430 INFO L225 Difference]: With dead ends: 8807 [2022-11-02 20:20:52,430 INFO L226 Difference]: Without dead ends: 8807 [2022-11-02 20:20:52,431 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:20:52,431 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 0 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-02 20:20:52,432 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 26 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-02 20:20:52,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8807 states. [2022-11-02 20:20:52,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8807 to 8807. [2022-11-02 20:20:52,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8807 states, 8398 states have (on average 3.088949749940462) internal successors, (25941), 8806 states have internal predecessors, (25941), 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) [2022-11-02 20:20:52,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8807 states to 8807 states and 25941 transitions. [2022-11-02 20:20:52,782 INFO L78 Accepts]: Start accepts. Automaton has 8807 states and 25941 transitions. Word has length 4 [2022-11-02 20:20:52,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:20:52,782 INFO L495 AbstractCegarLoop]: Abstraction has 8807 states and 25941 transitions. [2022-11-02 20:20:52,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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) [2022-11-02 20:20:52,783 INFO L276 IsEmpty]: Start isEmpty. Operand 8807 states and 25941 transitions. [2022-11-02 20:20:52,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-02 20:20:52,783 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:20:52,784 INFO L195 NwaCegarLoop]: trace histogram [5, 2, 1, 1, 1] [2022-11-02 20:20:52,823 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_348fcf73-3cb4-448f-a764-1b3e031dae9b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-02 20:20:53,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_348fcf73-3cb4-448f-a764-1b3e031dae9b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:20:53,007 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-11-02 20:20:53,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:20:53,008 INFO L85 PathProgramCache]: Analyzing trace with hash 527896373, now seen corresponding path program 1 times [2022-11-02 20:20:53,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:20:53,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121770195] [2022-11-02 20:20:53,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:20:53,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:20:53,080 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 20:20:53,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2125571807] [2022-11-02 20:20:53,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:20:53,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:20:53,081 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_348fcf73-3cb4-448f-a764-1b3e031dae9b/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:20:53,082 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_348fcf73-3cb4-448f-a764-1b3e031dae9b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:20:53,094 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_348fcf73-3cb4-448f-a764-1b3e031dae9b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-02 20:20:53,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:20:53,681 INFO L263 TraceCheckSpWp]: Trace formula consists of 1302 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 20:20:53,683 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:20:53,726 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:20:53,727 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:20:53,799 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:20:53,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:20:53,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121770195] [2022-11-02 20:20:53,800 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 20:20:53,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2125571807] [2022-11-02 20:20:53,801 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2125571807] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:20:53,801 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:20:53,801 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2022-11-02 20:20:53,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498967313] [2022-11-02 20:20:53,802 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:20:53,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-02 20:20:53,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:20:53,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-02 20:20:53,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2022-11-02 20:20:53,803 INFO L87 Difference]: Start difference. First operand 8807 states and 25941 transitions. Second operand has 12 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 12 states have internal predecessors, (16), 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) [2022-11-02 20:20:54,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:20:54,844 INFO L93 Difference]: Finished difference Result 8835 states and 25965 transitions. [2022-11-02 20:20:54,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-02 20:20:54,844 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 12 states have internal predecessors, (16), 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) Word has length 10 [2022-11-02 20:20:54,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:20:54,890 INFO L225 Difference]: With dead ends: 8835 [2022-11-02 20:20:54,891 INFO L226 Difference]: Without dead ends: 8835 [2022-11-02 20:20:54,892 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2022-11-02 20:20:54,892 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 28 mSDsluCounter, 352 mSDsCounter, 0 mSdLazyCounter, 427 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 447 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 427 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:20:54,893 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 65 Invalid, 447 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 427 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-02 20:20:54,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8835 states. [2022-11-02 20:20:55,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8835 to 8819. [2022-11-02 20:20:55,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8819 states, 8410 states have (on average 3.087395957193817) internal successors, (25965), 8818 states have internal predecessors, (25965), 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) [2022-11-02 20:20:55,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8819 states to 8819 states and 25965 transitions. [2022-11-02 20:20:55,256 INFO L78 Accepts]: Start accepts. Automaton has 8819 states and 25965 transitions. Word has length 10 [2022-11-02 20:20:55,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:20:55,257 INFO L495 AbstractCegarLoop]: Abstraction has 8819 states and 25965 transitions. [2022-11-02 20:20:55,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 12 states have internal predecessors, (16), 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) [2022-11-02 20:20:55,257 INFO L276 IsEmpty]: Start isEmpty. Operand 8819 states and 25965 transitions. [2022-11-02 20:20:55,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-02 20:20:55,258 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:20:55,258 INFO L195 NwaCegarLoop]: trace histogram [11, 2, 1, 1, 1] [2022-11-02 20:20:55,299 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_348fcf73-3cb4-448f-a764-1b3e031dae9b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-02 20:20:55,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_348fcf73-3cb4-448f-a764-1b3e031dae9b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:20:55,474 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-11-02 20:20:55,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:20:55,475 INFO L85 PathProgramCache]: Analyzing trace with hash -241190347, now seen corresponding path program 2 times [2022-11-02 20:20:55,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:20:55,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474586016] [2022-11-02 20:20:55,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:20:55,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:20:55,616 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 20:20:55,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [197682390] [2022-11-02 20:20:55,616 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:20:55,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:20:55,616 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_348fcf73-3cb4-448f-a764-1b3e031dae9b/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:20:55,617 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_348fcf73-3cb4-448f-a764-1b3e031dae9b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:20:55,627 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_348fcf73-3cb4-448f-a764-1b3e031dae9b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-02 20:20:56,455 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 20:20:56,455 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:20:56,467 INFO L263 TraceCheckSpWp]: Trace formula consists of 2706 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 20:20:56,469 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:20:56,612 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 23 proven. 55 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:20:56,612 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:20:56,842 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 23 proven. 55 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:20:56,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:20:56,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474586016] [2022-11-02 20:20:56,843 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 20:20:56,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [197682390] [2022-11-02 20:20:56,843 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [197682390] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:20:56,844 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:20:56,844 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2022-11-02 20:20:56,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278282325] [2022-11-02 20:20:56,844 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:20:56,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-02 20:20:56,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:20:56,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-02 20:20:56,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2022-11-02 20:20:56,846 INFO L87 Difference]: Start difference. First operand 8819 states and 25965 transitions. Second operand has 24 states, 24 states have (on average 1.1666666666666667) internal successors, (28), 24 states have internal predecessors, (28), 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) [2022-11-02 20:20:59,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:20:59,274 INFO L93 Difference]: Finished difference Result 8883 states and 26013 transitions. [2022-11-02 20:20:59,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-02 20:20:59,274 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.1666666666666667) internal successors, (28), 24 states have internal predecessors, (28), 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) Word has length 16 [2022-11-02 20:20:59,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:20:59,313 INFO L225 Difference]: With dead ends: 8883 [2022-11-02 20:20:59,313 INFO L226 Difference]: Without dead ends: 8883 [2022-11-02 20:20:59,314 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2022-11-02 20:20:59,314 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 108 mSDsluCounter, 352 mSDsCounter, 0 mSdLazyCounter, 463 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 505 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 463 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:20:59,315 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 65 Invalid, 505 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 463 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-11-02 20:20:59,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8883 states. [2022-11-02 20:20:59,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8883 to 8843. [2022-11-02 20:20:59,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8843 states, 8434 states have (on average 3.0843016362342897) internal successors, (26013), 8842 states have internal predecessors, (26013), 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) [2022-11-02 20:20:59,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8843 states to 8843 states and 26013 transitions. [2022-11-02 20:20:59,536 INFO L78 Accepts]: Start accepts. Automaton has 8843 states and 26013 transitions. Word has length 16 [2022-11-02 20:20:59,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:20:59,536 INFO L495 AbstractCegarLoop]: Abstraction has 8843 states and 26013 transitions. [2022-11-02 20:20:59,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.1666666666666667) internal successors, (28), 24 states have internal predecessors, (28), 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) [2022-11-02 20:20:59,537 INFO L276 IsEmpty]: Start isEmpty. Operand 8843 states and 26013 transitions. [2022-11-02 20:20:59,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-02 20:20:59,538 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:20:59,538 INFO L195 NwaCegarLoop]: trace histogram [23, 2, 1, 1, 1] [2022-11-02 20:20:59,587 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_348fcf73-3cb4-448f-a764-1b3e031dae9b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-02 20:20:59,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_348fcf73-3cb4-448f-a764-1b3e031dae9b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-02 20:20:59,755 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-11-02 20:20:59,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:20:59,755 INFO L85 PathProgramCache]: Analyzing trace with hash -1428402123, now seen corresponding path program 3 times [2022-11-02 20:20:59,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:20:59,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700639808] [2022-11-02 20:20:59,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:20:59,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:21:00,024 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 20:21:00,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1019466920] [2022-11-02 20:21:00,025 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-02 20:21:00,025 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:21:00,025 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_348fcf73-3cb4-448f-a764-1b3e031dae9b/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:21:00,027 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_348fcf73-3cb4-448f-a764-1b3e031dae9b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:21:00,051 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_348fcf73-3cb4-448f-a764-1b3e031dae9b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-02 20:21:01,051 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-02 20:21:01,051 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:21:01,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-02 20:21:01,061 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:21:01,138 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2022-11-02 20:21:01,138 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:21:01,437 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2022-11-02 20:21:01,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:21:01,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700639808] [2022-11-02 20:21:01,437 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 20:21:01,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1019466920] [2022-11-02 20:21:01,438 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1019466920] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:21:01,438 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:21:01,438 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2022-11-02 20:21:01,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266274479] [2022-11-02 20:21:01,438 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:21:01,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:21:01,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:21:01,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:21:01,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:21:01,440 INFO L87 Difference]: Start difference. First operand 8843 states and 26013 transitions. Second operand has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 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) [2022-11-02 20:21:08,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:21:08,567 INFO L93 Difference]: Finished difference Result 17658 states and 51974 transitions. [2022-11-02 20:21:08,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 20:21:08,567 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 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) Word has length 28 [2022-11-02 20:21:08,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:21:08,652 INFO L225 Difference]: With dead ends: 17658 [2022-11-02 20:21:08,653 INFO L226 Difference]: Without dead ends: 17658 [2022-11-02 20:21:08,653 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2022-11-02 20:21:08,654 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 284 mSDsluCounter, 522 mSDsCounter, 0 mSdLazyCounter, 574 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 284 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 574 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2022-11-02 20:21:08,654 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [284 Valid, 91 Invalid, 601 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 574 Invalid, 0 Unknown, 0 Unchecked, 6.9s Time] [2022-11-02 20:21:08,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17658 states. [2022-11-02 20:21:09,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17658 to 8866. [2022-11-02 20:21:09,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8866 states, 8458 states have (on average 3.0807519508157957) internal successors, (26057), 8865 states have internal predecessors, (26057), 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) [2022-11-02 20:21:09,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8866 states to 8866 states and 26057 transitions. [2022-11-02 20:21:09,088 INFO L78 Accepts]: Start accepts. Automaton has 8866 states and 26057 transitions. Word has length 28 [2022-11-02 20:21:09,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:21:09,090 INFO L495 AbstractCegarLoop]: Abstraction has 8866 states and 26057 transitions. [2022-11-02 20:21:09,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 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) [2022-11-02 20:21:09,090 INFO L276 IsEmpty]: Start isEmpty. Operand 8866 states and 26057 transitions. [2022-11-02 20:21:09,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-02 20:21:09,091 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:21:09,092 INFO L195 NwaCegarLoop]: trace histogram [24, 2, 1, 1, 1] [2022-11-02 20:21:09,137 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_348fcf73-3cb4-448f-a764-1b3e031dae9b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-02 20:21:09,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_348fcf73-3cb4-448f-a764-1b3e031dae9b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:21:09,323 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-11-02 20:21:09,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:21:09,324 INFO L85 PathProgramCache]: Analyzing trace with hash -1330783977, now seen corresponding path program 1 times [2022-11-02 20:21:09,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:21:09,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982306384] [2022-11-02 20:21:09,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:21:09,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:21:09,649 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 20:21:09,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [546880364] [2022-11-02 20:21:09,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:21:09,650 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:21:09,651 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_348fcf73-3cb4-448f-a764-1b3e031dae9b/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:21:09,652 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_348fcf73-3cb4-448f-a764-1b3e031dae9b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:21:09,675 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_348fcf73-3cb4-448f-a764-1b3e031dae9b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-02 20:21:11,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:21:11,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 5748 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-02 20:21:11,735 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:21:12,056 INFO L134 CoverageAnalysis]: Checked inductivity of 326 backedges. 70 proven. 253 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-02 20:21:12,056 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:21:12,517 INFO L134 CoverageAnalysis]: Checked inductivity of 326 backedges. 70 proven. 253 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-02 20:21:12,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:21:12,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982306384] [2022-11-02 20:21:12,518 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 20:21:12,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [546880364] [2022-11-02 20:21:12,518 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [546880364] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:21:12,518 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:21:12,518 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 32 [2022-11-02 20:21:12,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509467232] [2022-11-02 20:21:12,519 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:21:12,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-02 20:21:12,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:21:12,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-02 20:21:12,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2022-11-02 20:21:12,521 INFO L87 Difference]: Start difference. First operand 8866 states and 26057 transitions. Second operand has 32 states, 32 states have (on average 1.15625) internal successors, (37), 32 states have internal predecessors, (37), 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) [2022-11-02 20:21:15,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:21:15,396 INFO L93 Difference]: Finished difference Result 8945 states and 26105 transitions. [2022-11-02 20:21:15,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-02 20:21:15,396 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 1.15625) internal successors, (37), 32 states have internal predecessors, (37), 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) Word has length 29 [2022-11-02 20:21:15,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:21:15,428 INFO L225 Difference]: With dead ends: 8945 [2022-11-02 20:21:15,429 INFO L226 Difference]: Without dead ends: 8945 [2022-11-02 20:21:15,429 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 10 SyntacticMatches, 16 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2022-11-02 20:21:15,430 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 157 mSDsluCounter, 440 mSDsCounter, 0 mSdLazyCounter, 560 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 576 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 560 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-11-02 20:21:15,430 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 78 Invalid, 576 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 560 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-11-02 20:21:15,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8945 states. [2022-11-02 20:21:15,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8945 to 8890. [2022-11-02 20:21:15,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8890 states, 8482 states have (on average 3.077693940108465) internal successors, (26105), 8889 states have internal predecessors, (26105), 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) [2022-11-02 20:21:15,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8890 states to 8890 states and 26105 transitions. [2022-11-02 20:21:15,649 INFO L78 Accepts]: Start accepts. Automaton has 8890 states and 26105 transitions. Word has length 29 [2022-11-02 20:21:15,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:21:15,649 INFO L495 AbstractCegarLoop]: Abstraction has 8890 states and 26105 transitions. [2022-11-02 20:21:15,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 1.15625) internal successors, (37), 32 states have internal predecessors, (37), 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) [2022-11-02 20:21:15,649 INFO L276 IsEmpty]: Start isEmpty. Operand 8890 states and 26105 transitions. [2022-11-02 20:21:15,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-11-02 20:21:15,650 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:21:15,650 INFO L195 NwaCegarLoop]: trace histogram [32, 2, 1, 1, 1] [2022-11-02 20:21:15,699 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_348fcf73-3cb4-448f-a764-1b3e031dae9b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-02 20:21:15,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_348fcf73-3cb4-448f-a764-1b3e031dae9b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-02 20:21:15,879 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-11-02 20:21:15,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:21:15,879 INFO L85 PathProgramCache]: Analyzing trace with hash -33622761, now seen corresponding path program 2 times [2022-11-02 20:21:15,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:21:15,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289555479] [2022-11-02 20:21:15,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:21:15,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:21:16,231 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 20:21:16,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1802862527] [2022-11-02 20:21:16,232 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:21:16,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:21:16,232 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_348fcf73-3cb4-448f-a764-1b3e031dae9b/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:21:16,235 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_348fcf73-3cb4-448f-a764-1b3e031dae9b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:21:16,256 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_348fcf73-3cb4-448f-a764-1b3e031dae9b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-02 20:21:30,415 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 20:21:30,416 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:21:30,483 INFO L263 TraceCheckSpWp]: Trace formula consists of 7620 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 20:21:30,492 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:21:30,616 INFO L134 CoverageAnalysis]: Checked inductivity of 562 backedges. 97 proven. 0 refuted. 0 times theorem prover too weak. 465 trivial. 0 not checked. [2022-11-02 20:21:30,617 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:21:30,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:21:30,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289555479] [2022-11-02 20:21:30,617 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 20:21:30,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1802862527] [2022-11-02 20:21:30,618 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1802862527] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:21:30,618 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:21:30,618 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:21:30,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485701429] [2022-11-02 20:21:30,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:21:30,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:21:30,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:21:30,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:21:30,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:21:30,624 INFO L87 Difference]: Start difference. First operand 8890 states and 26105 transitions. Second operand has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 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) [2022-11-02 20:21:31,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:21:31,299 INFO L93 Difference]: Finished difference Result 8888 states and 26045 transitions. [2022-11-02 20:21:31,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 20:21:31,300 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 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) Word has length 37 [2022-11-02 20:21:31,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:21:31,328 INFO L225 Difference]: With dead ends: 8888 [2022-11-02 20:21:31,328 INFO L226 Difference]: Without dead ends: 8888 [2022-11-02 20:21:31,329 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:21:31,329 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 178 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-02 20:21:31,330 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 13 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-02 20:21:31,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8888 states. [2022-11-02 20:21:31,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8888 to 8888. [2022-11-02 20:21:31,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8888 states, 8482 states have (on average 3.070620136760198) internal successors, (26045), 8887 states have internal predecessors, (26045), 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) [2022-11-02 20:21:31,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8888 states to 8888 states and 26045 transitions. [2022-11-02 20:21:31,641 INFO L78 Accepts]: Start accepts. Automaton has 8888 states and 26045 transitions. Word has length 37 [2022-11-02 20:21:31,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:21:31,643 INFO L495 AbstractCegarLoop]: Abstraction has 8888 states and 26045 transitions. [2022-11-02 20:21:31,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 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) [2022-11-02 20:21:31,643 INFO L276 IsEmpty]: Start isEmpty. Operand 8888 states and 26045 transitions. [2022-11-02 20:21:31,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-11-02 20:21:31,648 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:21:31,648 INFO L195 NwaCegarLoop]: trace histogram [62, 3, 2, 1, 1] [2022-11-02 20:21:31,758 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_348fcf73-3cb4-448f-a764-1b3e031dae9b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-02 20:21:31,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_348fcf73-3cb4-448f-a764-1b3e031dae9b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:21:31,875 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-11-02 20:21:31,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:21:31,875 INFO L85 PathProgramCache]: Analyzing trace with hash -74063661, now seen corresponding path program 4 times [2022-11-02 20:21:31,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:21:31,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412619476] [2022-11-02 20:21:31,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:21:31,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:21:32,619 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 20:21:32,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [730164862] [2022-11-02 20:21:32,620 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-02 20:21:32,620 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:21:32,620 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_348fcf73-3cb4-448f-a764-1b3e031dae9b/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:21:32,621 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_348fcf73-3cb4-448f-a764-1b3e031dae9b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:21:32,637 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_348fcf73-3cb4-448f-a764-1b3e031dae9b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process