./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/09-regions_21-arrayloop2_nr.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 38b53e6a 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_2b3a60e0-f430-4738-8810-7d26f3dcfca4/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b3a60e0-f430-4738-8810-7d26f3dcfca4/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b3a60e0-f430-4738-8810-7d26f3dcfca4/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b3a60e0-f430-4738-8810-7d26f3dcfca4/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/goblint-regression/09-regions_21-arrayloop2_nr.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b3a60e0-f430-4738-8810-7d26f3dcfca4/bin/utaipan-ByfvJB40ur/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b3a60e0-f430-4738-8810-7d26f3dcfca4/bin/utaipan-ByfvJB40ur --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 52746884466210ec366bc04a3a6cb03f413619353c73143d79c1024e676e598e --- 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-38b53e6 [2022-11-25 22:14:18,669 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 22:14:18,672 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 22:14:18,712 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 22:14:18,713 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 22:14:18,715 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 22:14:18,727 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 22:14:18,729 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 22:14:18,730 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 22:14:18,731 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 22:14:18,732 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 22:14:18,733 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 22:14:18,734 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 22:14:18,736 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 22:14:18,738 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 22:14:18,743 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 22:14:18,744 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 22:14:18,750 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 22:14:18,753 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 22:14:18,760 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 22:14:18,763 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 22:14:18,766 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 22:14:18,768 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 22:14:18,769 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 22:14:18,779 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 22:14:18,780 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 22:14:18,780 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 22:14:18,782 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 22:14:18,783 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 22:14:18,784 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 22:14:18,784 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 22:14:18,785 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 22:14:18,787 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 22:14:18,789 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 22:14:18,791 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 22:14:18,791 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 22:14:18,792 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 22:14:18,792 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 22:14:18,792 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 22:14:18,794 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 22:14:18,795 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 22:14:18,796 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b3a60e0-f430-4738-8810-7d26f3dcfca4/bin/utaipan-ByfvJB40ur/config/svcomp-Overflow-32bit-Taipan_Default.epf [2022-11-25 22:14:18,835 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 22:14:18,835 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 22:14:18,836 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 22:14:18,836 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 22:14:18,837 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 22:14:18,837 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 22:14:18,838 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-25 22:14:18,838 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-25 22:14:18,838 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-25 22:14:18,838 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-25 22:14:18,839 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-25 22:14:18,840 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-25 22:14:18,840 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-25 22:14:18,840 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-25 22:14:18,840 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-25 22:14:18,841 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-25 22:14:18,841 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-25 22:14:18,841 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-25 22:14:18,842 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 22:14:18,842 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 22:14:18,843 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 22:14:18,843 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 22:14:18,843 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 22:14:18,843 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 22:14:18,843 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 22:14:18,844 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 22:14:18,844 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 22:14:18,845 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-25 22:14:18,845 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 22:14:18,845 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 22:14:18,845 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 22:14:18,846 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 22:14:18,846 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 22:14:18,846 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 22:14:18,847 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 22:14:18,847 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 22:14:18,847 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-25 22:14:18,847 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 22:14:18,848 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 22:14:18,848 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-25 22:14:18,848 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 22:14:18,848 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 22:14:18,849 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-25 22:14:18,849 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_2b3a60e0-f430-4738-8810-7d26f3dcfca4/bin/utaipan-ByfvJB40ur/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b3a60e0-f430-4738-8810-7d26f3dcfca4/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 52746884466210ec366bc04a3a6cb03f413619353c73143d79c1024e676e598e [2022-11-25 22:14:19,145 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 22:14:19,183 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 22:14:19,186 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 22:14:19,187 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 22:14:19,188 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 22:14:19,189 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b3a60e0-f430-4738-8810-7d26f3dcfca4/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/goblint-regression/09-regions_21-arrayloop2_nr.i [2022-11-25 22:14:22,214 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 22:14:22,621 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 22:14:22,622 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b3a60e0-f430-4738-8810-7d26f3dcfca4/sv-benchmarks/c/goblint-regression/09-regions_21-arrayloop2_nr.i [2022-11-25 22:14:22,640 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b3a60e0-f430-4738-8810-7d26f3dcfca4/bin/utaipan-ByfvJB40ur/data/1a1d7e969/ceec042fb7154adeaa229d10e1c59603/FLAGac3dc8da2 [2022-11-25 22:14:22,661 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b3a60e0-f430-4738-8810-7d26f3dcfca4/bin/utaipan-ByfvJB40ur/data/1a1d7e969/ceec042fb7154adeaa229d10e1c59603 [2022-11-25 22:14:22,664 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 22:14:22,667 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 22:14:22,672 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 22:14:22,673 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 22:14:22,677 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 22:14:22,678 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 10:14:22" (1/1) ... [2022-11-25 22:14:22,679 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60686e0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:14:22, skipping insertion in model container [2022-11-25 22:14:22,680 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 10:14:22" (1/1) ... [2022-11-25 22:14:22,689 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 22:14:22,766 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 22:14:23,405 WARN L1576 CHandler]: Possible shadowing of function new [2022-11-25 22:14:23,406 WARN L1576 CHandler]: Possible shadowing of function new [2022-11-25 22:14:23,406 WARN L1576 CHandler]: Possible shadowing of function new [2022-11-25 22:14:23,407 WARN L1576 CHandler]: Possible shadowing of function new [2022-11-25 22:14:23,437 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 22:14:23,456 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 22:14:23,506 WARN L1576 CHandler]: Possible shadowing of function new [2022-11-25 22:14:23,507 WARN L1576 CHandler]: Possible shadowing of function new [2022-11-25 22:14:23,507 WARN L1576 CHandler]: Possible shadowing of function new [2022-11-25 22:14:23,508 WARN L1576 CHandler]: Possible shadowing of function new [2022-11-25 22:14:23,520 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 22:14:23,589 INFO L208 MainTranslator]: Completed translation [2022-11-25 22:14:23,590 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:14:23 WrapperNode [2022-11-25 22:14:23,590 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 22:14:23,591 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 22:14:23,592 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 22:14:23,592 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 22:14:23,600 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:14:23" (1/1) ... [2022-11-25 22:14:23,624 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:14:23" (1/1) ... [2022-11-25 22:14:23,654 INFO L138 Inliner]: procedures = 271, calls = 32, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 127 [2022-11-25 22:14:23,655 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 22:14:23,655 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 22:14:23,655 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 22:14:23,656 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 22:14:23,667 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:14:23" (1/1) ... [2022-11-25 22:14:23,667 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:14:23" (1/1) ... [2022-11-25 22:14:23,672 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:14:23" (1/1) ... [2022-11-25 22:14:23,672 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:14:23" (1/1) ... [2022-11-25 22:14:23,688 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:14:23" (1/1) ... [2022-11-25 22:14:23,698 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:14:23" (1/1) ... [2022-11-25 22:14:23,712 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:14:23" (1/1) ... [2022-11-25 22:14:23,714 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:14:23" (1/1) ... [2022-11-25 22:14:23,718 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 22:14:23,721 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 22:14:23,721 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 22:14:23,722 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 22:14:23,723 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:14:23" (1/1) ... [2022-11-25 22:14:23,729 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 22:14:23,741 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b3a60e0-f430-4738-8810-7d26f3dcfca4/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:14:23,761 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b3a60e0-f430-4738-8810-7d26f3dcfca4/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 22:14:23,765 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b3a60e0-f430-4738-8810-7d26f3dcfca4/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 22:14:23,808 INFO L130 BoogieDeclarations]: Found specification of procedure f [2022-11-25 22:14:23,808 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2022-11-25 22:14:23,808 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 22:14:23,808 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-25 22:14:23,809 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 22:14:23,809 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-25 22:14:23,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 22:14:23,809 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-25 22:14:23,809 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-25 22:14:23,809 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 22:14:23,810 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-25 22:14:23,810 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 22:14:23,810 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 22:14:23,812 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-25 22:14:24,021 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 22:14:24,023 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 22:14:24,489 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 22:14:24,497 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 22:14:24,498 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-25 22:14:24,500 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 10:14:24 BoogieIcfgContainer [2022-11-25 22:14:24,500 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 22:14:24,506 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 22:14:24,506 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 22:14:24,510 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 22:14:24,510 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 10:14:22" (1/3) ... [2022-11-25 22:14:24,513 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d2df124 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 10:14:24, skipping insertion in model container [2022-11-25 22:14:24,513 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:14:23" (2/3) ... [2022-11-25 22:14:24,515 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d2df124 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 10:14:24, skipping insertion in model container [2022-11-25 22:14:24,515 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 10:14:24" (3/3) ... [2022-11-25 22:14:24,517 INFO L112 eAbstractionObserver]: Analyzing ICFG 09-regions_21-arrayloop2_nr.i [2022-11-25 22:14:24,527 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-25 22:14:24,539 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 22:14:24,539 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2022-11-25 22:14:24,539 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-25 22:14:24,690 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-25 22:14:24,742 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 22:14:24,764 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 196 places, 203 transitions, 416 flow [2022-11-25 22:14:24,770 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 196 places, 203 transitions, 416 flow [2022-11-25 22:14:24,773 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 196 places, 203 transitions, 416 flow [2022-11-25 22:14:24,904 INFO L130 PetriNetUnfolder]: 14/201 cut-off events. [2022-11-25 22:14:24,904 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 22:14:24,914 INFO L83 FinitePrefix]: Finished finitePrefix Result has 208 conditions, 201 events. 14/201 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 503 event pairs, 0 based on Foata normal form. 0/173 useless extension candidates. Maximal degree in co-relation 142. Up to 2 conditions per place. [2022-11-25 22:14:24,921 INFO L119 LiptonReduction]: Number of co-enabled transitions 7600 [2022-11-25 22:14:55,774 WARN L233 SmtUtils]: Spent 13.80s on a formula simplification. DAG size of input: 184 DAG size of output: 182 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 22:15:04,182 WARN L233 SmtUtils]: Spent 8.40s 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) [2022-11-25 22:15:18,825 WARN L233 SmtUtils]: Spent 14.64s on a formula simplification. DAG size of input: 184 DAG size of output: 182 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 22:15:27,774 WARN L233 SmtUtils]: Spent 8.94s 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) [2022-11-25 22:15:41,247 WARN L233 SmtUtils]: Spent 13.42s on a formula simplification. DAG size of input: 186 DAG size of output: 184 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 22:15:49,297 WARN L233 SmtUtils]: Spent 8.05s 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) [2022-11-25 22:16:05,740 WARN L233 SmtUtils]: Spent 16.44s on a formula simplification. DAG size of input: 186 DAG size of output: 184 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 22:16:14,347 WARN L233 SmtUtils]: Spent 8.60s 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) [2022-11-25 22:16:14,352 INFO L134 LiptonReduction]: Checked pairs total: 7653 [2022-11-25 22:16:14,352 INFO L136 LiptonReduction]: Total number of compositions: 208 [2022-11-25 22:16:14,360 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 42 places, 41 transitions, 92 flow [2022-11-25 22:16:14,399 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 272 states, 242 states have (on average 2.9008264462809916) internal successors, (702), 271 states have internal predecessors, (702), 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) [2022-11-25 22:16:14,419 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 22:16:14,424 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;@44def7a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 22:16:14,424 INFO L358 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2022-11-25 22:16:14,427 INFO L276 IsEmpty]: Start isEmpty. Operand has 272 states, 242 states have (on average 2.9008264462809916) internal successors, (702), 271 states have internal predecessors, (702), 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) [2022-11-25 22:16:14,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-25 22:16:14,433 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:16:14,434 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-25 22:16:14,434 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-25 22:16:14,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:16:14,440 INFO L85 PathProgramCache]: Analyzing trace with hash 674906, now seen corresponding path program 1 times [2022-11-25 22:16:14,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:16:14,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482117237] [2022-11-25 22:16:14,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:16:14,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:16:14,593 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 22:16:14,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1921684504] [2022-11-25 22:16:14,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:16:14,595 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:16:14,595 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b3a60e0-f430-4738-8810-7d26f3dcfca4/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:16:14,599 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b3a60e0-f430-4738-8810-7d26f3dcfca4/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:16:14,604 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b3a60e0-f430-4738-8810-7d26f3dcfca4/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-25 22:16:14,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:16:14,820 INFO L263 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 22:16:14,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:16:14,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:16:14,852 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 22:16:14,852 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:16:14,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482117237] [2022-11-25 22:16:14,856 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 22:16:14,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1921684504] [2022-11-25 22:16:14,858 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1921684504] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:16:14,858 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:16:14,858 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 22:16:14,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755019768] [2022-11-25 22:16:14,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:16:14,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 22:16:14,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:16:14,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 22:16:14,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 22:16:14,896 INFO L87 Difference]: Start difference. First operand has 272 states, 242 states have (on average 2.9008264462809916) internal successors, (702), 271 states have internal predecessors, (702), 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) [2022-11-25 22:16:15,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:16:15,144 INFO L93 Difference]: Finished difference Result 534 states and 1393 transitions. [2022-11-25 22:16:15,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 22:16:15,147 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 [2022-11-25 22:16:15,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:16:15,171 INFO L225 Difference]: With dead ends: 534 [2022-11-25 22:16:15,172 INFO L226 Difference]: Without dead ends: 534 [2022-11-25 22:16:15,174 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 [2022-11-25 22:16:15,180 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 34 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-25 22:16:15,184 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 0 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-25 22:16:15,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2022-11-25 22:16:15,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 270. [2022-11-25 22:16:15,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 242 states have (on average 2.8925619834710745) internal successors, (700), 269 states have internal predecessors, (700), 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) [2022-11-25 22:16:15,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 700 transitions. [2022-11-25 22:16:15,291 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 700 transitions. Word has length 3 [2022-11-25 22:16:15,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:16:15,293 INFO L495 AbstractCegarLoop]: Abstraction has 270 states and 700 transitions. [2022-11-25 22:16:15,293 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) [2022-11-25 22:16:15,293 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 700 transitions. [2022-11-25 22:16:15,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-25 22:16:15,294 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:16:15,294 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-25 22:16:15,311 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b3a60e0-f430-4738-8810-7d26f3dcfca4/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-25 22:16:15,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b3a60e0-f430-4738-8810-7d26f3dcfca4/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:16:15,517 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-25 22:16:15,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:16:15,518 INFO L85 PathProgramCache]: Analyzing trace with hash 674842, now seen corresponding path program 1 times [2022-11-25 22:16:15,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:16:15,519 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276983655] [2022-11-25 22:16:15,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:16:15,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:16:15,544 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 22:16:15,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [307072285] [2022-11-25 22:16:15,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:16:15,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:16:15,545 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b3a60e0-f430-4738-8810-7d26f3dcfca4/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:16:15,546 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b3a60e0-f430-4738-8810-7d26f3dcfca4/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:16:15,583 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b3a60e0-f430-4738-8810-7d26f3dcfca4/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-25 22:16:15,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:16:15,698 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 22:16:15,699 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:16:15,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:16:15,708 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 22:16:15,709 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:16:15,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276983655] [2022-11-25 22:16:15,709 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 22:16:15,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [307072285] [2022-11-25 22:16:15,711 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [307072285] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:16:15,711 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:16:15,712 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 22:16:15,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485053398] [2022-11-25 22:16:15,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:16:15,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 22:16:15,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:16:15,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 22:16:15,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 22:16:15,714 INFO L87 Difference]: Start difference. First operand 270 states and 700 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 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) [2022-11-25 22:16:16,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:16:16,088 INFO L93 Difference]: Finished difference Result 272 states and 703 transitions. [2022-11-25 22:16:16,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 22:16:16,089 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 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 [2022-11-25 22:16:16,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:16:16,092 INFO L225 Difference]: With dead ends: 272 [2022-11-25 22:16:16,092 INFO L226 Difference]: Without dead ends: 272 [2022-11-25 22:16:16,092 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 [2022-11-25 22:16:16,093 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 1 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-25 22:16:16,094 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 0 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-25 22:16:16,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2022-11-25 22:16:16,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 272. [2022-11-25 22:16:16,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 244 states have (on average 2.8811475409836067) internal successors, (703), 271 states have internal predecessors, (703), 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) [2022-11-25 22:16:16,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 703 transitions. [2022-11-25 22:16:16,111 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 703 transitions. Word has length 3 [2022-11-25 22:16:16,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:16:16,111 INFO L495 AbstractCegarLoop]: Abstraction has 272 states and 703 transitions. [2022-11-25 22:16:16,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 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) [2022-11-25 22:16:16,112 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 703 transitions. [2022-11-25 22:16:16,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-25 22:16:16,112 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:16:16,113 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1] [2022-11-25 22:16:16,125 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b3a60e0-f430-4738-8810-7d26f3dcfca4/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-25 22:16:16,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b3a60e0-f430-4738-8810-7d26f3dcfca4/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:16:16,319 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-25 22:16:16,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:16:16,321 INFO L85 PathProgramCache]: Analyzing trace with hash 648565666, now seen corresponding path program 1 times [2022-11-25 22:16:16,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:16:16,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410603929] [2022-11-25 22:16:16,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:16:16,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:16:16,388 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 22:16:16,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [909816347] [2022-11-25 22:16:16,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:16:16,389 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:16:16,389 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b3a60e0-f430-4738-8810-7d26f3dcfca4/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:16:16,391 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b3a60e0-f430-4738-8810-7d26f3dcfca4/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:16:16,394 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b3a60e0-f430-4738-8810-7d26f3dcfca4/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-25 22:16:16,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:16:16,512 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-25 22:16:16,513 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:16:16,523 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:16:16,523 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 22:16:16,524 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:16:16,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410603929] [2022-11-25 22:16:16,524 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 22:16:16,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [909816347] [2022-11-25 22:16:16,524 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [909816347] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:16:16,525 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:16:16,525 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 22:16:16,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699085576] [2022-11-25 22:16:16,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:16:16,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 22:16:16,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:16:16,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 22:16:16,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 22:16:16,526 INFO L87 Difference]: Start difference. First operand 272 states and 703 transitions. Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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) [2022-11-25 22:16:16,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:16:16,800 INFO L93 Difference]: Finished difference Result 276 states and 707 transitions. [2022-11-25 22:16:16,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 22:16:16,801 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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 5 [2022-11-25 22:16:16,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:16:16,803 INFO L225 Difference]: With dead ends: 276 [2022-11-25 22:16:16,803 INFO L226 Difference]: Without dead ends: 276 [2022-11-25 22:16:16,804 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 22:16:16,805 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 2 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-25 22:16:16,805 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 0 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-25 22:16:16,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2022-11-25 22:16:16,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 274. [2022-11-25 22:16:16,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 246 states have (on average 2.8739837398373984) internal successors, (707), 273 states have internal predecessors, (707), 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) [2022-11-25 22:16:16,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 707 transitions. [2022-11-25 22:16:16,819 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 707 transitions. Word has length 5 [2022-11-25 22:16:16,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:16:16,820 INFO L495 AbstractCegarLoop]: Abstraction has 274 states and 707 transitions. [2022-11-25 22:16:16,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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) [2022-11-25 22:16:16,820 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 707 transitions. [2022-11-25 22:16:16,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-25 22:16:16,820 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:16:16,821 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2022-11-25 22:16:16,844 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b3a60e0-f430-4738-8810-7d26f3dcfca4/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-25 22:16:17,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b3a60e0-f430-4738-8810-7d26f3dcfca4/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:16:17,032 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-25 22:16:17,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:16:17,033 INFO L85 PathProgramCache]: Analyzing trace with hash -1368040836, now seen corresponding path program 1 times [2022-11-25 22:16:17,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:16:17,033 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288885052] [2022-11-25 22:16:17,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:16:17,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:16:17,071 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 22:16:17,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2123818927] [2022-11-25 22:16:17,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:16:17,072 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:16:17,072 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b3a60e0-f430-4738-8810-7d26f3dcfca4/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:16:17,073 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b3a60e0-f430-4738-8810-7d26f3dcfca4/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:16:17,091 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b3a60e0-f430-4738-8810-7d26f3dcfca4/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-25 22:16:17,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:16:17,264 INFO L263 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 22:16:17,266 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:16:17,299 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:16:17,300 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:16:17,323 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:16:17,323 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:16:17,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288885052] [2022-11-25 22:16:17,324 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 22:16:17,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2123818927] [2022-11-25 22:16:17,324 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2123818927] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 22:16:17,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1472715245] [2022-11-25 22:16:17,334 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Construction of path programs is not yet supported for concurrent programs at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:243) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-25 22:16:17,336 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 22:16:17,337 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2022-11-25 22:16:17,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502399132] [2022-11-25 22:16:17,337 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 22:16:17,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 22:16:17,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:16:17,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 22:16:17,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-25 22:16:17,339 INFO L87 Difference]: Start difference. First operand 274 states and 707 transitions. Second operand has 6 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 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) [2022-11-25 22:16:18,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:16:18,329 INFO L93 Difference]: Finished difference Result 286 states and 719 transitions. [2022-11-25 22:16:18,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 22:16:18,330 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 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 6 [2022-11-25 22:16:18,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:16:18,332 INFO L225 Difference]: With dead ends: 286 [2022-11-25 22:16:18,332 INFO L226 Difference]: Without dead ends: 286 [2022-11-25 22:16:18,332 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-25 22:16:18,333 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 16 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-25 22:16:18,334 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 0 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-25 22:16:18,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2022-11-25 22:16:18,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 280. [2022-11-25 22:16:18,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 252 states have (on average 2.8531746031746033) internal successors, (719), 279 states have internal predecessors, (719), 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) [2022-11-25 22:16:18,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 719 transitions. [2022-11-25 22:16:18,347 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 719 transitions. Word has length 6 [2022-11-25 22:16:18,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:16:18,347 INFO L495 AbstractCegarLoop]: Abstraction has 280 states and 719 transitions. [2022-11-25 22:16:18,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 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) [2022-11-25 22:16:18,347 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 719 transitions. [2022-11-25 22:16:18,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-25 22:16:18,348 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:16:18,348 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 1, 1, 1] [2022-11-25 22:16:18,363 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b3a60e0-f430-4738-8810-7d26f3dcfca4/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-25 22:16:18,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b3a60e0-f430-4738-8810-7d26f3dcfca4/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:16:18,563 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-25 22:16:18,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:16:18,564 INFO L85 PathProgramCache]: Analyzing trace with hash 891304482, now seen corresponding path program 2 times [2022-11-25 22:16:18,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:16:18,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981851481] [2022-11-25 22:16:18,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:16:18,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:16:18,663 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 22:16:18,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1240922565] [2022-11-25 22:16:18,664 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-25 22:16:18,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:16:18,664 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b3a60e0-f430-4738-8810-7d26f3dcfca4/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:16:18,665 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b3a60e0-f430-4738-8810-7d26f3dcfca4/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:16:18,683 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b3a60e0-f430-4738-8810-7d26f3dcfca4/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-25 22:16:18,927 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-25 22:16:18,928 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 22:16:18,929 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 22:16:18,931 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:16:18,940 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-25 22:16:18,941 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 22:16:18,941 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:16:18,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981851481] [2022-11-25 22:16:18,941 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 22:16:18,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1240922565] [2022-11-25 22:16:18,942 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1240922565] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:16:18,942 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:16:18,942 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 22:16:18,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005549664] [2022-11-25 22:16:18,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:16:18,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 22:16:18,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:16:18,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 22:16:18,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 22:16:18,944 INFO L87 Difference]: Start difference. First operand 280 states and 719 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2022-11-25 22:16:19,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:16:19,386 INFO L93 Difference]: Finished difference Result 280 states and 717 transitions. [2022-11-25 22:16:19,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 22:16:19,387 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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 9 [2022-11-25 22:16:19,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:16:19,389 INFO L225 Difference]: With dead ends: 280 [2022-11-25 22:16:19,389 INFO L226 Difference]: Without dead ends: 280 [2022-11-25 22:16:19,390 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 22:16:19,391 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-25 22:16:19,391 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-25 22:16:19,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2022-11-25 22:16:19,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 280. [2022-11-25 22:16:19,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 252 states have (on average 2.8452380952380953) internal successors, (717), 279 states have internal predecessors, (717), 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) [2022-11-25 22:16:19,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 717 transitions. [2022-11-25 22:16:19,401 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 717 transitions. Word has length 9 [2022-11-25 22:16:19,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:16:19,402 INFO L495 AbstractCegarLoop]: Abstraction has 280 states and 717 transitions. [2022-11-25 22:16:19,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2022-11-25 22:16:19,402 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 717 transitions. [2022-11-25 22:16:19,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-25 22:16:19,403 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:16:19,403 INFO L195 NwaCegarLoop]: trace histogram [5, 2, 1, 1, 1] [2022-11-25 22:16:19,415 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b3a60e0-f430-4738-8810-7d26f3dcfca4/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-25 22:16:19,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b3a60e0-f430-4738-8810-7d26f3dcfca4/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:16:19,609 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-25 22:16:19,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:16:19,609 INFO L85 PathProgramCache]: Analyzing trace with hash 1860637804, now seen corresponding path program 3 times [2022-11-25 22:16:19,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:16:19,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054016950] [2022-11-25 22:16:19,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:16:19,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:16:19,707 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 22:16:19,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [749567881] [2022-11-25 22:16:19,708 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-25 22:16:19,708 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:16:19,708 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b3a60e0-f430-4738-8810-7d26f3dcfca4/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:16:19,714 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b3a60e0-f430-4738-8810-7d26f3dcfca4/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:16:19,731 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b3a60e0-f430-4738-8810-7d26f3dcfca4/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-25 22:16:20,235 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-25 22:16:20,235 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 22:16:20,243 INFO L263 TraceCheckSpWp]: Trace formula consists of 1294 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-25 22:16:20,245 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:16:20,297 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 22:16:20,298 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:16:20,371 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 22:16:20,371 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:16:20,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054016950] [2022-11-25 22:16:20,372 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 22:16:20,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [749567881] [2022-11-25 22:16:20,372 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [749567881] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 22:16:20,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1846620111] [2022-11-25 22:16:20,373 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Construction of path programs is not yet supported for concurrent programs at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:243) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-25 22:16:20,373 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 22:16:20,373 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2022-11-25 22:16:20,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498376075] [2022-11-25 22:16:20,373 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 22:16:20,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-25 22:16:20,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:16:20,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-25 22:16:20,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2022-11-25 22:16:20,375 INFO L87 Difference]: Start difference. First operand 280 states and 717 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) [2022-11-25 22:16:21,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:16:21,566 INFO L93 Difference]: Finished difference Result 308 states and 741 transitions. [2022-11-25 22:16:21,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-25 22:16:21,567 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 [2022-11-25 22:16:21,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:16:21,569 INFO L225 Difference]: With dead ends: 308 [2022-11-25 22:16:21,569 INFO L226 Difference]: Without dead ends: 308 [2022-11-25 22:16:21,570 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 [2022-11-25 22:16:21,570 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 28 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-25 22:16:21,571 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 0 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 230 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-25 22:16:21,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2022-11-25 22:16:21,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 292. [2022-11-25 22:16:21,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 264 states have (on average 2.8068181818181817) internal successors, (741), 291 states have internal predecessors, (741), 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) [2022-11-25 22:16:21,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 741 transitions. [2022-11-25 22:16:21,581 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 741 transitions. Word has length 10 [2022-11-25 22:16:21,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:16:21,581 INFO L495 AbstractCegarLoop]: Abstraction has 292 states and 741 transitions. [2022-11-25 22:16:21,582 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) [2022-11-25 22:16:21,582 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 741 transitions. [2022-11-25 22:16:21,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-25 22:16:21,582 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:16:21,583 INFO L195 NwaCegarLoop]: trace histogram [11, 2, 1, 1, 1] [2022-11-25 22:16:21,603 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b3a60e0-f430-4738-8810-7d26f3dcfca4/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-25 22:16:21,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b3a60e0-f430-4738-8810-7d26f3dcfca4/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:16:21,792 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-25 22:16:21,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:16:21,792 INFO L85 PathProgramCache]: Analyzing trace with hash -396555604, now seen corresponding path program 4 times [2022-11-25 22:16:21,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:16:21,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765098559] [2022-11-25 22:16:21,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:16:21,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:16:21,989 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 22:16:21,990 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [268178583] [2022-11-25 22:16:21,990 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-25 22:16:21,990 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:16:21,990 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b3a60e0-f430-4738-8810-7d26f3dcfca4/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:16:21,991 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b3a60e0-f430-4738-8810-7d26f3dcfca4/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:16:22,000 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b3a60e0-f430-4738-8810-7d26f3dcfca4/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-25 22:16:23,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:16:23,015 INFO L263 TraceCheckSpWp]: Trace formula consists of 2698 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-25 22:16:23,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:16:23,161 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 23 proven. 55 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 22:16:23,162 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:16:23,441 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 23 proven. 55 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 22:16:23,441 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:16:23,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765098559] [2022-11-25 22:16:23,441 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 22:16:23,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [268178583] [2022-11-25 22:16:23,442 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [268178583] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 22:16:23,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1227765433] [2022-11-25 22:16:23,442 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Construction of path programs is not yet supported for concurrent programs at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:243) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-25 22:16:23,443 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 22:16:23,443 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2022-11-25 22:16:23,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951801160] [2022-11-25 22:16:23,443 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 22:16:23,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-25 22:16:23,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:16:23,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-25 22:16:23,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2022-11-25 22:16:23,445 INFO L87 Difference]: Start difference. First operand 292 states and 741 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) [2022-11-25 22:16:25,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:16:25,817 INFO L93 Difference]: Finished difference Result 356 states and 789 transitions. [2022-11-25 22:16:25,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-25 22:16:25,818 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 [2022-11-25 22:16:25,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:16:25,820 INFO L225 Difference]: With dead ends: 356 [2022-11-25 22:16:25,820 INFO L226 Difference]: Without dead ends: 356 [2022-11-25 22:16:25,821 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 [2022-11-25 22:16:25,821 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 102 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-25 22:16:25,822 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 0 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-11-25 22:16:25,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2022-11-25 22:16:25,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 316. [2022-11-25 22:16:25,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 316 states, 288 states have (on average 2.7395833333333335) internal successors, (789), 315 states have internal predecessors, (789), 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) [2022-11-25 22:16:25,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 789 transitions. [2022-11-25 22:16:25,833 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 789 transitions. Word has length 16 [2022-11-25 22:16:25,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:16:25,834 INFO L495 AbstractCegarLoop]: Abstraction has 316 states and 789 transitions. [2022-11-25 22:16:25,834 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) [2022-11-25 22:16:25,834 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 789 transitions. [2022-11-25 22:16:25,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-25 22:16:25,835 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:16:25,835 INFO L195 NwaCegarLoop]: trace histogram [23, 2, 1, 1, 1] [2022-11-25 22:16:25,851 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b3a60e0-f430-4738-8810-7d26f3dcfca4/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-25 22:16:26,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b3a60e0-f430-4738-8810-7d26f3dcfca4/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:16:26,047 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-25 22:16:26,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:16:26,047 INFO L85 PathProgramCache]: Analyzing trace with hash -1484265684, now seen corresponding path program 5 times [2022-11-25 22:16:26,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:16:26,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913078825] [2022-11-25 22:16:26,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:16:26,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:16:26,397 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 22:16:26,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1385814965] [2022-11-25 22:16:26,398 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-25 22:16:26,398 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:16:26,398 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b3a60e0-f430-4738-8810-7d26f3dcfca4/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:16:26,399 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b3a60e0-f430-4738-8810-7d26f3dcfca4/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:16:26,435 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b3a60e0-f430-4738-8810-7d26f3dcfca4/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-25 22:16:27,508 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-25 22:16:27,508 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 22:16:27,513 INFO L263 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-25 22:16:27,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:16:27,596 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 0 proven. 47 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked. [2022-11-25 22:16:27,597 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:16:30,255 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked. [2022-11-25 22:16:30,255 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:16:30,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913078825] [2022-11-25 22:16:30,256 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 22:16:30,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1385814965] [2022-11-25 22:16:30,256 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1385814965] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-25 22:16:30,256 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 22:16:30,256 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [2] total 5 [2022-11-25 22:16:30,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687679650] [2022-11-25 22:16:30,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:16:30,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 22:16:30,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:16:30,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 22:16:30,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=21, Unknown=1, NotChecked=0, Total=42 [2022-11-25 22:16:30,258 INFO L87 Difference]: Start difference. First operand 316 states and 789 transitions. Second operand has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 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) [2022-11-25 22:16:32,395 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2022-11-25 22:16:32,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:16:32,571 INFO L93 Difference]: Finished difference Result 313 states and 765 transitions. [2022-11-25 22:16:32,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 22:16:32,571 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 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 28 [2022-11-25 22:16:32,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:16:32,573 INFO L225 Difference]: With dead ends: 313 [2022-11-25 22:16:32,574 INFO L226 Difference]: Without dead ends: 313 [2022-11-25 22:16:32,574 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=20, Invalid=21, Unknown=1, NotChecked=0, Total=42 [2022-11-25 22:16:32,575 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 61 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-25 22:16:32,575 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 0 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 63 Invalid, 1 Unknown, 0 Unchecked, 2.3s Time] [2022-11-25 22:16:32,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2022-11-25 22:16:32,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 313. [2022-11-25 22:16:32,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 313 states, 288 states have (on average 2.65625) internal successors, (765), 312 states have internal predecessors, (765), 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) [2022-11-25 22:16:32,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 765 transitions. [2022-11-25 22:16:32,587 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 765 transitions. Word has length 28 [2022-11-25 22:16:32,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:16:32,588 INFO L495 AbstractCegarLoop]: Abstraction has 313 states and 765 transitions. [2022-11-25 22:16:32,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 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) [2022-11-25 22:16:32,588 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 765 transitions. [2022-11-25 22:16:32,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-25 22:16:32,589 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:16:32,589 INFO L195 NwaCegarLoop]: trace histogram [23, 2, 1, 1, 1] [2022-11-25 22:16:32,603 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b3a60e0-f430-4738-8810-7d26f3dcfca4/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-25 22:16:32,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b3a60e0-f430-4738-8810-7d26f3dcfca4/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:16:32,803 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-25 22:16:32,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:16:32,803 INFO L85 PathProgramCache]: Analyzing trace with hash -1484265778, now seen corresponding path program 1 times [2022-11-25 22:16:32,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:16:32,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537203241] [2022-11-25 22:16:32,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:16:32,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:16:33,119 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 22:16:33,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [760819382] [2022-11-25 22:16:33,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:16:33,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:16:33,120 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b3a60e0-f430-4738-8810-7d26f3dcfca4/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:16:33,123 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b3a60e0-f430-4738-8810-7d26f3dcfca4/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:16:33,143 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b3a60e0-f430-4738-8810-7d26f3dcfca4/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-25 22:16:35,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:16:35,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 5506 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-25 22:16:35,377 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:16:35,779 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 47 proven. 253 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 22:16:35,780 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:16:36,377 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 47 proven. 253 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 22:16:36,377 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:16:36,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537203241] [2022-11-25 22:16:36,378 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 22:16:36,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [760819382] [2022-11-25 22:16:36,378 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [760819382] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 22:16:36,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [294084387] [2022-11-25 22:16:36,379 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Construction of path programs is not yet supported for concurrent programs at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:243) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-25 22:16:36,379 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 22:16:36,379 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 32 [2022-11-25 22:16:36,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373844347] [2022-11-25 22:16:36,379 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 22:16:36,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-25 22:16:36,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:16:36,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-25 22:16:36,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2022-11-25 22:16:36,381 INFO L87 Difference]: Start difference. First operand 313 states and 765 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) [2022-11-25 22:16:40,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:16:40,975 INFO L93 Difference]: Finished difference Result 357 states and 789 transitions. [2022-11-25 22:16:40,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-25 22:16:40,976 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 28 [2022-11-25 22:16:40,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:16:40,979 INFO L225 Difference]: With dead ends: 357 [2022-11-25 22:16:40,979 INFO L226 Difference]: Without dead ends: 357 [2022-11-25 22:16:40,979 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 8 SyntacticMatches, 16 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2022-11-25 22:16:40,980 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 86 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-11-25 22:16:40,980 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 0 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2022-11-25 22:16:40,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2022-11-25 22:16:40,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 329. [2022-11-25 22:16:40,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 329 states, 304 states have (on average 2.5953947368421053) internal successors, (789), 328 states have internal predecessors, (789), 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) [2022-11-25 22:16:40,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 789 transitions. [2022-11-25 22:16:40,992 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 789 transitions. Word has length 28 [2022-11-25 22:16:40,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:16:40,993 INFO L495 AbstractCegarLoop]: Abstraction has 329 states and 789 transitions. [2022-11-25 22:16:40,993 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) [2022-11-25 22:16:40,993 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 789 transitions. [2022-11-25 22:16:40,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-25 22:16:40,994 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:16:40,994 INFO L195 NwaCegarLoop]: trace histogram [31, 2, 1, 1, 1] [2022-11-25 22:16:41,025 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b3a60e0-f430-4738-8810-7d26f3dcfca4/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-25 22:16:41,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b3a60e0-f430-4738-8810-7d26f3dcfca4/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-11-25 22:16:41,219 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-25 22:16:41,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:16:41,220 INFO L85 PathProgramCache]: Analyzing trace with hash 2124462542, now seen corresponding path program 2 times [2022-11-25 22:16:41,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:16:41,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744342162] [2022-11-25 22:16:41,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:16:41,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:16:41,653 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 22:16:41,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [742112014] [2022-11-25 22:16:41,653 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-25 22:16:41,654 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:16:41,654 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b3a60e0-f430-4738-8810-7d26f3dcfca4/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:16:41,655 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b3a60e0-f430-4738-8810-7d26f3dcfca4/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:16:41,695 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b3a60e0-f430-4738-8810-7d26f3dcfca4/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-25 22:16:43,526 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-25 22:16:43,526 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 22:16:43,533 INFO L263 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-25 22:16:43,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:16:43,664 INFO L134 CoverageAnalysis]: Checked inductivity of 529 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 465 trivial. 0 not checked. [2022-11-25 22:16:43,664 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 22:16:43,665 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:16:43,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744342162] [2022-11-25 22:16:43,665 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 22:16:43,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [742112014] [2022-11-25 22:16:43,665 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [742112014] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:16:43,666 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:16:43,666 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 22:16:43,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154879495] [2022-11-25 22:16:43,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:16:43,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 22:16:43,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:16:43,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 22:16:43,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-25 22:16:43,669 INFO L87 Difference]: Start difference. First operand 329 states and 789 transitions. Second operand has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 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) [2022-11-25 22:16:44,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:16:44,147 INFO L93 Difference]: Finished difference Result 328 states and 759 transitions. [2022-11-25 22:16:44,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 22:16:44,148 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 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 36 [2022-11-25 22:16:44,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:16:44,150 INFO L225 Difference]: With dead ends: 328 [2022-11-25 22:16:44,150 INFO L226 Difference]: Without dead ends: 328 [2022-11-25 22:16:44,151 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-25 22:16:44,151 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 116 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-25 22:16:44,151 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 0 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-25 22:16:44,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2022-11-25 22:16:44,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 297. [2022-11-25 22:16:44,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 273 states have (on average 2.663003663003663) internal successors, (727), 296 states have internal predecessors, (727), 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) [2022-11-25 22:16:44,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 727 transitions. [2022-11-25 22:16:44,220 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 727 transitions. Word has length 36 [2022-11-25 22:16:44,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:16:44,220 INFO L495 AbstractCegarLoop]: Abstraction has 297 states and 727 transitions. [2022-11-25 22:16:44,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 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) [2022-11-25 22:16:44,221 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 727 transitions. [2022-11-25 22:16:44,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-11-25 22:16:44,221 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:16:44,222 INFO L195 NwaCegarLoop]: trace histogram [30, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:16:44,238 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b3a60e0-f430-4738-8810-7d26f3dcfca4/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-25 22:16:44,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b3a60e0-f430-4738-8810-7d26f3dcfca4/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-25 22:16:44,422 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-25 22:16:44,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:16:44,423 INFO L85 PathProgramCache]: Analyzing trace with hash -2051130133, now seen corresponding path program 1 times [2022-11-25 22:16:44,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:16:44,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508121800] [2022-11-25 22:16:44,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:16:44,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:16:44,824 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 22:16:44,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [376316673] [2022-11-25 22:16:44,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:16:44,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:16:44,825 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b3a60e0-f430-4738-8810-7d26f3dcfca4/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:16:44,826 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b3a60e0-f430-4738-8810-7d26f3dcfca4/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:16:44,834 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b3a60e0-f430-4738-8810-7d26f3dcfca4/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-25 22:16:48,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:16:48,167 INFO L263 TraceCheckSpWp]: Trace formula consists of 7172 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 22:16:48,176 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:16:48,259 INFO L134 CoverageAnalysis]: Checked inductivity of 466 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 465 trivial. 0 not checked. [2022-11-25 22:16:48,259 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:16:48,348 INFO L134 CoverageAnalysis]: Checked inductivity of 466 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 465 trivial. 0 not checked. [2022-11-25 22:16:48,348 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:16:48,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508121800] [2022-11-25 22:16:48,348 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 22:16:48,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [376316673] [2022-11-25 22:16:48,349 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [376316673] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 22:16:48,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [536055876] [2022-11-25 22:16:48,349 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-25 22:16:48,351 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 22:16:48,351 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2022-11-25 22:16:48,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359966052] [2022-11-25 22:16:48,352 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 22:16:48,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 22:16:48,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:16:48,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 22:16:48,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-25 22:16:48,354 INFO L87 Difference]: Start difference. First operand 297 states and 727 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 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) [2022-11-25 22:16:48,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:16:48,707 INFO L93 Difference]: Finished difference Result 393 states and 826 transitions. [2022-11-25 22:16:48,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 22:16:48,709 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 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 39 [2022-11-25 22:16:48,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:16:48,712 INFO L225 Difference]: With dead ends: 393 [2022-11-25 22:16:48,712 INFO L226 Difference]: Without dead ends: 393 [2022-11-25 22:16:48,713 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-25 22:16:48,714 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 4 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-25 22:16:48,714 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 0 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-25 22:16:48,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2022-11-25 22:16:48,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 393. [2022-11-25 22:16:48,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 369 states have (on average 2.238482384823848) internal successors, (826), 392 states have internal predecessors, (826), 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) [2022-11-25 22:16:48,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 826 transitions. [2022-11-25 22:16:48,731 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 826 transitions. Word has length 39 [2022-11-25 22:16:48,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:16:48,731 INFO L495 AbstractCegarLoop]: Abstraction has 393 states and 826 transitions. [2022-11-25 22:16:48,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 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) [2022-11-25 22:16:48,732 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 826 transitions. [2022-11-25 22:16:48,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-11-25 22:16:48,736 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:16:48,736 INFO L195 NwaCegarLoop]: trace histogram [120, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:16:48,772 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b3a60e0-f430-4738-8810-7d26f3dcfca4/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-25 22:16:48,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b3a60e0-f430-4738-8810-7d26f3dcfca4/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:16:48,957 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-25 22:16:48,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:16:48,957 INFO L85 PathProgramCache]: Analyzing trace with hash 1531511235, now seen corresponding path program 2 times [2022-11-25 22:16:48,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:16:48,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002552224] [2022-11-25 22:16:48,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:16:48,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:16:50,400 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 22:16:50,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [216709827] [2022-11-25 22:16:50,400 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-25 22:16:50,400 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:16:50,401 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b3a60e0-f430-4738-8810-7d26f3dcfca4/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:16:50,406 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b3a60e0-f430-4738-8810-7d26f3dcfca4/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:16:50,412 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b3a60e0-f430-4738-8810-7d26f3dcfca4/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-25 22:16:55,280 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-25 22:16:55,280 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 22:16:55,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-25 22:16:55,315 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:16:55,351 INFO L134 CoverageAnalysis]: Checked inductivity of 7636 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7636 trivial. 0 not checked. [2022-11-25 22:16:55,351 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 22:16:55,352 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:16:55,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002552224] [2022-11-25 22:16:55,352 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 22:16:55,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [216709827] [2022-11-25 22:16:55,352 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [216709827] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:16:55,352 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:16:55,353 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 22:16:55,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180919642] [2022-11-25 22:16:55,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:16:55,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 22:16:55,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:16:55,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 22:16:55,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 22:16:55,355 INFO L87 Difference]: Start difference. First operand 393 states and 826 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 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) [2022-11-25 22:16:55,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:16:55,607 INFO L93 Difference]: Finished difference Result 369 states and 765 transitions. [2022-11-25 22:16:55,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 22:16:55,608 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 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 135 [2022-11-25 22:16:55,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:16:55,611 INFO L225 Difference]: With dead ends: 369 [2022-11-25 22:16:55,611 INFO L226 Difference]: Without dead ends: 369 [2022-11-25 22:16:55,611 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 22:16:55,612 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 22 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-25 22:16:55,613 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 0 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-25 22:16:55,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2022-11-25 22:16:55,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 369. [2022-11-25 22:16:55,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 369 states, 350 states have (on average 2.1857142857142855) internal successors, (765), 368 states have internal predecessors, (765), 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) [2022-11-25 22:16:55,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 765 transitions. [2022-11-25 22:16:55,625 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 765 transitions. Word has length 135 [2022-11-25 22:16:55,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:16:55,626 INFO L495 AbstractCegarLoop]: Abstraction has 369 states and 765 transitions. [2022-11-25 22:16:55,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 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) [2022-11-25 22:16:55,626 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 765 transitions. [2022-11-25 22:16:55,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-11-25 22:16:55,629 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:16:55,629 INFO L195 NwaCegarLoop]: trace histogram [120, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:16:55,647 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b3a60e0-f430-4738-8810-7d26f3dcfca4/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-25 22:16:55,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b3a60e0-f430-4738-8810-7d26f3dcfca4/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:16:55,843 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-25 22:16:55,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:16:55,844 INFO L85 PathProgramCache]: Analyzing trace with hash 1531511254, now seen corresponding path program 1 times [2022-11-25 22:16:55,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:16:55,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733139142] [2022-11-25 22:16:55,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:16:55,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:16:57,363 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 22:16:57,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1045854612] [2022-11-25 22:16:57,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:16:57,364 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:16:57,364 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b3a60e0-f430-4738-8810-7d26f3dcfca4/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:16:57,369 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b3a60e0-f430-4738-8810-7d26f3dcfca4/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:16:57,371 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b3a60e0-f430-4738-8810-7d26f3dcfca4/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-25 22:17:08,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:17:08,495 INFO L263 TraceCheckSpWp]: Trace formula consists of 28352 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-25 22:17:08,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:17:08,816 INFO L134 CoverageAnalysis]: Checked inductivity of 7636 backedges. 0 proven. 5776 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2022-11-25 22:17:08,817 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:17:09,151 INFO L134 CoverageAnalysis]: Checked inductivity of 7636 backedges. 0 proven. 5776 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2022-11-25 22:17:09,152 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:17:09,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733139142] [2022-11-25 22:17:09,152 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 22:17:09,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1045854612] [2022-11-25 22:17:09,152 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1045854612] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 22:17:09,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1927983181] [2022-11-25 22:17:09,153 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-25 22:17:09,155 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 22:17:09,155 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2022-11-25 22:17:09,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43691813] [2022-11-25 22:17:09,156 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 22:17:09,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-25 22:17:09,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:17:09,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-25 22:17:09,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2022-11-25 22:17:09,158 INFO L87 Difference]: Start difference. First operand 369 states and 765 transitions. Second operand has 12 states, 12 states have (on average 2.75) internal successors, (33), 11 states have internal predecessors, (33), 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) [2022-11-25 22:17:10,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:17:10,266 INFO L93 Difference]: Finished difference Result 561 states and 963 transitions. [2022-11-25 22:17:10,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-25 22:17:10,267 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.75) internal successors, (33), 11 states have internal predecessors, (33), 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 135 [2022-11-25 22:17:10,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:17:10,270 INFO L225 Difference]: With dead ends: 561 [2022-11-25 22:17:10,271 INFO L226 Difference]: Without dead ends: 561 [2022-11-25 22:17:10,271 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 258 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2022-11-25 22:17:10,272 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 4 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-25 22:17:10,272 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 0 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-25 22:17:10,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 561 states. [2022-11-25 22:17:10,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 561 to 561. [2022-11-25 22:17:10,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 561 states, 542 states have (on average 1.7767527675276753) internal successors, (963), 560 states have internal predecessors, (963), 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) [2022-11-25 22:17:10,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 963 transitions. [2022-11-25 22:17:10,293 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 963 transitions. Word has length 135 [2022-11-25 22:17:10,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:17:10,293 INFO L495 AbstractCegarLoop]: Abstraction has 561 states and 963 transitions. [2022-11-25 22:17:10,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.75) internal successors, (33), 11 states have internal predecessors, (33), 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) [2022-11-25 22:17:10,294 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 963 transitions. [2022-11-25 22:17:10,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2022-11-25 22:17:10,301 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:17:10,301 INFO L195 NwaCegarLoop]: trace histogram [300, 10, 10, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:17:10,395 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b3a60e0-f430-4738-8810-7d26f3dcfca4/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-25 22:17:10,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b3a60e0-f430-4738-8810-7d26f3dcfca4/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-25 22:17:10,515 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-25 22:17:10,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:17:10,516 INFO L85 PathProgramCache]: Analyzing trace with hash 453651334, now seen corresponding path program 2 times [2022-11-25 22:17:10,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:17:10,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335310103] [2022-11-25 22:17:10,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:17:10,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:17:14,021 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 22:17:14,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [948988370] [2022-11-25 22:17:14,021 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-25 22:17:14,021 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:17:14,022 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b3a60e0-f430-4738-8810-7d26f3dcfca4/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:17:14,027 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b3a60e0-f430-4738-8810-7d26f3dcfca4/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:17:14,032 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b3a60e0-f430-4738-8810-7d26f3dcfca4/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-25 22:17:26,885 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-25 22:17:26,885 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 22:17:26,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 22:17:26,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:17:26,987 INFO L134 CoverageAnalysis]: Checked inductivity of 47950 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47950 trivial. 0 not checked. [2022-11-25 22:17:26,987 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 22:17:26,987 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:17:26,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335310103] [2022-11-25 22:17:26,988 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 22:17:26,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [948988370] [2022-11-25 22:17:26,988 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [948988370] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:17:26,988 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:17:26,988 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 22:17:26,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489735271] [2022-11-25 22:17:26,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:17:26,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 22:17:26,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:17:26,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 22:17:26,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 22:17:26,991 INFO L87 Difference]: Start difference. First operand 561 states and 963 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 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) [2022-11-25 22:17:27,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:17:27,201 INFO L93 Difference]: Finished difference Result 537 states and 902 transitions. [2022-11-25 22:17:27,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 22:17:27,202 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 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 327 [2022-11-25 22:17:27,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:17:27,205 INFO L225 Difference]: With dead ends: 537 [2022-11-25 22:17:27,205 INFO L226 Difference]: Without dead ends: 537 [2022-11-25 22:17:27,206 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 325 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 22:17:27,206 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 20 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-25 22:17:27,207 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 0 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-25 22:17:27,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 537 states. [2022-11-25 22:17:27,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 537 to 537. [2022-11-25 22:17:27,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537 states, 523 states have (on average 1.7246653919694073) internal successors, (902), 536 states have internal predecessors, (902), 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) [2022-11-25 22:17:27,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 902 transitions. [2022-11-25 22:17:27,223 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 902 transitions. Word has length 327 [2022-11-25 22:17:27,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:17:27,224 INFO L495 AbstractCegarLoop]: Abstraction has 537 states and 902 transitions. [2022-11-25 22:17:27,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 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) [2022-11-25 22:17:27,224 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 902 transitions. [2022-11-25 22:17:27,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2022-11-25 22:17:27,230 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:17:27,230 INFO L195 NwaCegarLoop]: trace histogram [300, 10, 10, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:17:27,271 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b3a60e0-f430-4738-8810-7d26f3dcfca4/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-25 22:17:27,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b3a60e0-f430-4738-8810-7d26f3dcfca4/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-25 22:17:27,452 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-25 22:17:27,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:17:27,453 INFO L85 PathProgramCache]: Analyzing trace with hash 453651307, now seen corresponding path program 1 times [2022-11-25 22:17:27,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:17:27,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797336602] [2022-11-25 22:17:27,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:17:27,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:17:31,129 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 22:17:31,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1081172506] [2022-11-25 22:17:31,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:17:31,129 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:17:31,129 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b3a60e0-f430-4738-8810-7d26f3dcfca4/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:17:31,130 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b3a60e0-f430-4738-8810-7d26f3dcfca4/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:17:31,133 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b3a60e0-f430-4738-8810-7d26f3dcfca4/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process