./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/loop-lit/gj2007.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 6b4ec56b 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_7fa51509-98eb-4d9a-8e6a-6328ef29c93b/bin/utaipan-6cKwYrpEi9/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fa51509-98eb-4d9a-8e6a-6328ef29c93b/bin/utaipan-6cKwYrpEi9/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fa51509-98eb-4d9a-8e6a-6328ef29c93b/bin/utaipan-6cKwYrpEi9/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fa51509-98eb-4d9a-8e6a-6328ef29c93b/bin/utaipan-6cKwYrpEi9/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-lit/gj2007.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fa51509-98eb-4d9a-8e6a-6328ef29c93b/bin/utaipan-6cKwYrpEi9/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fa51509-98eb-4d9a-8e6a-6328ef29c93b/bin/utaipan-6cKwYrpEi9 --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 e210f4af0021f1e0c887bbfa24b18aad98424108efaad4cfc57802fd9fd5ce53 --- 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-6b4ec56 [2022-11-20 20:24:04,680 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 20:24:04,683 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 20:24:04,719 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 20:24:04,719 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 20:24:04,720 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 20:24:04,721 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 20:24:04,737 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 20:24:04,739 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 20:24:04,742 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 20:24:04,742 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 20:24:04,743 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 20:24:04,744 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 20:24:04,745 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 20:24:04,746 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 20:24:04,747 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 20:24:04,747 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 20:24:04,748 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 20:24:04,750 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 20:24:04,763 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 20:24:04,765 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 20:24:04,769 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 20:24:04,771 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 20:24:04,771 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 20:24:04,776 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 20:24:04,777 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 20:24:04,777 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 20:24:04,778 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 20:24:04,778 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 20:24:04,779 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 20:24:04,780 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 20:24:04,780 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 20:24:04,781 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 20:24:04,782 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 20:24:04,783 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 20:24:04,783 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 20:24:04,784 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 20:24:04,784 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 20:24:04,784 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 20:24:04,785 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 20:24:04,786 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 20:24:04,790 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fa51509-98eb-4d9a-8e6a-6328ef29c93b/bin/utaipan-6cKwYrpEi9/config/svcomp-Overflow-32bit-Taipan_Default.epf [2022-11-20 20:24:04,830 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 20:24:04,830 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 20:24:04,830 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 20:24:04,830 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 20:24:04,831 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 20:24:04,831 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 20:24:04,831 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-20 20:24:04,832 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-20 20:24:04,832 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-20 20:24:04,832 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-20 20:24:04,832 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-20 20:24:04,832 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-20 20:24:04,833 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-20 20:24:04,833 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-20 20:24:04,833 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-20 20:24:04,833 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-20 20:24:04,833 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-20 20:24:04,834 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-20 20:24:04,836 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 20:24:04,837 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 20:24:04,837 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 20:24:04,837 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 20:24:04,837 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 20:24:04,838 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 20:24:04,838 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 20:24:04,838 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 20:24:04,838 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 20:24:04,838 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-20 20:24:04,839 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 20:24:04,840 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 20:24:04,840 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 20:24:04,840 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 20:24:04,840 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 20:24:04,840 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 20:24:04,841 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 20:24:04,841 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 20:24:04,842 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-20 20:24:04,842 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 20:24:04,842 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 20:24:04,842 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-20 20:24:04,843 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 20:24:04,843 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 20:24:04,843 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-20 20:24:04,843 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_7fa51509-98eb-4d9a-8e6a-6328ef29c93b/bin/utaipan-6cKwYrpEi9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fa51509-98eb-4d9a-8e6a-6328ef29c93b/bin/utaipan-6cKwYrpEi9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e210f4af0021f1e0c887bbfa24b18aad98424108efaad4cfc57802fd9fd5ce53 [2022-11-20 20:24:05,139 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 20:24:05,160 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 20:24:05,163 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 20:24:05,164 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 20:24:05,164 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 20:24:05,166 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fa51509-98eb-4d9a-8e6a-6328ef29c93b/bin/utaipan-6cKwYrpEi9/../../sv-benchmarks/c/loop-lit/gj2007.i [2022-11-20 20:24:08,051 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 20:24:08,274 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 20:24:08,279 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fa51509-98eb-4d9a-8e6a-6328ef29c93b/sv-benchmarks/c/loop-lit/gj2007.i [2022-11-20 20:24:08,285 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fa51509-98eb-4d9a-8e6a-6328ef29c93b/bin/utaipan-6cKwYrpEi9/data/3e9cd3ab8/023fae7c317041c9b2c9c76ff8e49b88/FLAGccf124465 [2022-11-20 20:24:08,306 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fa51509-98eb-4d9a-8e6a-6328ef29c93b/bin/utaipan-6cKwYrpEi9/data/3e9cd3ab8/023fae7c317041c9b2c9c76ff8e49b88 [2022-11-20 20:24:08,311 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 20:24:08,313 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 20:24:08,316 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 20:24:08,316 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 20:24:08,320 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 20:24:08,321 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 08:24:08" (1/1) ... [2022-11-20 20:24:08,322 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@372418d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:24:08, skipping insertion in model container [2022-11-20 20:24:08,323 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 08:24:08" (1/1) ... [2022-11-20 20:24:08,330 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 20:24:08,348 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 20:24:08,593 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fa51509-98eb-4d9a-8e6a-6328ef29c93b/sv-benchmarks/c/loop-lit/gj2007.i[895,908] [2022-11-20 20:24:08,606 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 20:24:08,618 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 20:24:08,632 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fa51509-98eb-4d9a-8e6a-6328ef29c93b/sv-benchmarks/c/loop-lit/gj2007.i[895,908] [2022-11-20 20:24:08,637 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 20:24:08,652 INFO L208 MainTranslator]: Completed translation [2022-11-20 20:24:08,652 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:24:08 WrapperNode [2022-11-20 20:24:08,653 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 20:24:08,654 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 20:24:08,654 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 20:24:08,654 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 20:24:08,661 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:24:08" (1/1) ... [2022-11-20 20:24:08,668 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:24:08" (1/1) ... [2022-11-20 20:24:08,685 INFO L138 Inliner]: procedures = 16, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 34 [2022-11-20 20:24:08,685 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 20:24:08,686 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 20:24:08,686 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 20:24:08,686 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 20:24:08,695 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:24:08" (1/1) ... [2022-11-20 20:24:08,696 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:24:08" (1/1) ... [2022-11-20 20:24:08,698 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:24:08" (1/1) ... [2022-11-20 20:24:08,698 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:24:08" (1/1) ... [2022-11-20 20:24:08,707 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:24:08" (1/1) ... [2022-11-20 20:24:08,712 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:24:08" (1/1) ... [2022-11-20 20:24:08,713 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:24:08" (1/1) ... [2022-11-20 20:24:08,714 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:24:08" (1/1) ... [2022-11-20 20:24:08,721 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 20:24:08,723 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 20:24:08,723 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 20:24:08,723 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 20:24:08,724 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:24:08" (1/1) ... [2022-11-20 20:24:08,730 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 20:24:08,746 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fa51509-98eb-4d9a-8e6a-6328ef29c93b/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:24:08,764 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fa51509-98eb-4d9a-8e6a-6328ef29c93b/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 20:24:08,790 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fa51509-98eb-4d9a-8e6a-6328ef29c93b/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 20:24:08,813 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 20:24:08,814 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 20:24:08,814 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 20:24:08,814 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 20:24:08,879 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 20:24:08,882 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 20:24:08,996 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 20:24:09,025 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 20:24:09,025 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-20 20:24:09,028 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:24:09 BoogieIcfgContainer [2022-11-20 20:24:09,028 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 20:24:09,030 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 20:24:09,031 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 20:24:09,034 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 20:24:09,034 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 08:24:08" (1/3) ... [2022-11-20 20:24:09,035 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d40e9e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 08:24:09, skipping insertion in model container [2022-11-20 20:24:09,035 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:24:08" (2/3) ... [2022-11-20 20:24:09,036 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d40e9e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 08:24:09, skipping insertion in model container [2022-11-20 20:24:09,036 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:24:09" (3/3) ... [2022-11-20 20:24:09,037 INFO L112 eAbstractionObserver]: Analyzing ICFG gj2007.i [2022-11-20 20:24:09,057 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 20:24:09,057 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-11-20 20:24:09,122 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 20:24:09,145 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;@3ce29cc5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 20:24:09,145 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-11-20 20:24:09,149 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 15 states have internal predecessors, (17), 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) [2022-11-20 20:24:09,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-20 20:24:09,155 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:24:09,155 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-20 20:24:09,156 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-20 20:24:09,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:24:09,161 INFO L85 PathProgramCache]: Analyzing trace with hash 2394492, now seen corresponding path program 1 times [2022-11-20 20:24:09,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:24:09,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616690976] [2022-11-20 20:24:09,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:24:09,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:24:09,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:24:09,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:24:09,444 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:24:09,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616690976] [2022-11-20 20:24:09,445 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616690976] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:24:09,446 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:24:09,446 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 20:24:09,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030911913] [2022-11-20 20:24:09,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:24:09,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:24:09,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:24:09,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:24:09,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:24:09,484 INFO L87 Difference]: Start difference. First operand has 16 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 15 states have internal predecessors, (17), 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, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:24:09,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:24:09,579 INFO L93 Difference]: Finished difference Result 35 states and 41 transitions. [2022-11-20 20:24:09,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:24:09,583 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-11-20 20:24:09,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:24:09,591 INFO L225 Difference]: With dead ends: 35 [2022-11-20 20:24:09,592 INFO L226 Difference]: Without dead ends: 19 [2022-11-20 20:24:09,595 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 [2022-11-20 20:24:09,603 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 2 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 20:24:09,604 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 15 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 20:24:09,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-11-20 20:24:09,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2022-11-20 20:24:09,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 18 states have internal predecessors, (20), 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) [2022-11-20 20:24:09,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2022-11-20 20:24:09,641 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 4 [2022-11-20 20:24:09,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:24:09,643 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2022-11-20 20:24:09,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:24:09,644 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2022-11-20 20:24:09,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-20 20:24:09,645 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:24:09,645 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-11-20 20:24:09,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 20:24:09,646 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-20 20:24:09,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:24:09,649 INFO L85 PathProgramCache]: Analyzing trace with hash -720356169, now seen corresponding path program 1 times [2022-11-20 20:24:09,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:24:09,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870050484] [2022-11-20 20:24:09,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:24:09,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:24:09,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:24:09,728 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:24:09,729 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:24:09,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870050484] [2022-11-20 20:24:09,729 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870050484] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 20:24:09,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [97041366] [2022-11-20 20:24:09,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:24:09,730 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:24:09,730 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fa51509-98eb-4d9a-8e6a-6328ef29c93b/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:24:09,734 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fa51509-98eb-4d9a-8e6a-6328ef29c93b/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 20:24:09,762 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fa51509-98eb-4d9a-8e6a-6328ef29c93b/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 20:24:09,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:24:09,802 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 20:24:09,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:24:09,830 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 20:24:09,830 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 20:24:09,835 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [97041366] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:24:09,835 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 20:24:09,835 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2022-11-20 20:24:09,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008684499] [2022-11-20 20:24:09,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:24:09,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:24:09,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:24:09,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:24:09,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-20 20:24:09,841 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:24:09,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:24:09,877 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2022-11-20 20:24:09,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:24:09,879 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-20 20:24:09,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:24:09,880 INFO L225 Difference]: With dead ends: 19 [2022-11-20 20:24:09,881 INFO L226 Difference]: Without dead ends: 17 [2022-11-20 20:24:09,882 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-20 20:24:09,884 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 5 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 20:24:09,888 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 8 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 20:24:09,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-11-20 20:24:09,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2022-11-20 20:24:09,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 16 states have internal predecessors, (18), 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) [2022-11-20 20:24:09,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2022-11-20 20:24:09,896 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 8 [2022-11-20 20:24:09,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:24:09,897 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2022-11-20 20:24:09,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:24:09,897 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2022-11-20 20:24:09,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-20 20:24:09,899 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:24:09,899 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:24:09,910 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fa51509-98eb-4d9a-8e6a-6328ef29c93b/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 20:24:10,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fa51509-98eb-4d9a-8e6a-6328ef29c93b/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-11-20 20:24:10,105 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-20 20:24:10,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:24:10,106 INFO L85 PathProgramCache]: Analyzing trace with hash -856204705, now seen corresponding path program 1 times [2022-11-20 20:24:10,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:24:10,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056658016] [2022-11-20 20:24:10,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:24:10,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:24:10,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:24:10,159 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:24:10,160 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:24:10,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056658016] [2022-11-20 20:24:10,160 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056658016] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 20:24:10,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [58769486] [2022-11-20 20:24:10,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:24:10,161 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:24:10,161 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fa51509-98eb-4d9a-8e6a-6328ef29c93b/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:24:10,162 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fa51509-98eb-4d9a-8e6a-6328ef29c93b/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 20:24:10,190 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fa51509-98eb-4d9a-8e6a-6328ef29c93b/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 20:24:10,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:24:10,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 20:24:10,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:24:10,225 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 20:24:10,225 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 20:24:10,225 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [58769486] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:24:10,226 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 20:24:10,226 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2022-11-20 20:24:10,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571320978] [2022-11-20 20:24:10,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:24:10,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:24:10,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:24:10,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:24:10,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-20 20:24:10,228 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:24:10,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:24:10,246 INFO L93 Difference]: Finished difference Result 30 states and 34 transitions. [2022-11-20 20:24:10,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:24:10,246 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-20 20:24:10,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:24:10,247 INFO L225 Difference]: With dead ends: 30 [2022-11-20 20:24:10,247 INFO L226 Difference]: Without dead ends: 18 [2022-11-20 20:24:10,248 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-20 20:24:10,249 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 5 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 20:24:10,249 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 10 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 20:24:10,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-11-20 20:24:10,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2022-11-20 20:24:10,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 17 states have internal predecessors, (19), 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) [2022-11-20 20:24:10,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2022-11-20 20:24:10,253 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 9 [2022-11-20 20:24:10,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:24:10,253 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2022-11-20 20:24:10,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:24:10,254 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2022-11-20 20:24:10,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-20 20:24:10,254 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:24:10,254 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1] [2022-11-20 20:24:10,264 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fa51509-98eb-4d9a-8e6a-6328ef29c93b/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 20:24:10,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fa51509-98eb-4d9a-8e6a-6328ef29c93b/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:24:10,459 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-20 20:24:10,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:24:10,460 INFO L85 PathProgramCache]: Analyzing trace with hash -856210663, now seen corresponding path program 1 times [2022-11-20 20:24:10,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:24:10,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131956364] [2022-11-20 20:24:10,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:24:10,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:24:10,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:24:10,506 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:24:10,507 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:24:10,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131956364] [2022-11-20 20:24:10,507 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131956364] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 20:24:10,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1105172817] [2022-11-20 20:24:10,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:24:10,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:24:10,508 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fa51509-98eb-4d9a-8e6a-6328ef29c93b/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:24:10,509 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fa51509-98eb-4d9a-8e6a-6328ef29c93b/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 20:24:10,539 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fa51509-98eb-4d9a-8e6a-6328ef29c93b/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 20:24:10,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:24:10,555 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 20:24:10,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:24:10,613 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:24:10,613 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 20:24:10,614 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1105172817] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:24:10,614 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 20:24:10,614 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2022-11-20 20:24:10,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435734828] [2022-11-20 20:24:10,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:24:10,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 20:24:10,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:24:10,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 20:24:10,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 20:24:10,616 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 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) [2022-11-20 20:24:10,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:24:10,652 INFO L93 Difference]: Finished difference Result 18 states and 19 transitions. [2022-11-20 20:24:10,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 20:24:10,653 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 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 9 [2022-11-20 20:24:10,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:24:10,654 INFO L225 Difference]: With dead ends: 18 [2022-11-20 20:24:10,654 INFO L226 Difference]: Without dead ends: 17 [2022-11-20 20:24:10,654 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 20:24:10,655 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 12 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 20:24:10,656 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 4 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 20:24:10,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-11-20 20:24:10,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 15. [2022-11-20 20:24:10,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 14 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) [2022-11-20 20:24:10,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2022-11-20 20:24:10,660 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 9 [2022-11-20 20:24:10,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:24:10,660 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2022-11-20 20:24:10,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 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) [2022-11-20 20:24:10,660 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2022-11-20 20:24:10,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-20 20:24:10,661 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:24:10,661 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:24:10,672 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fa51509-98eb-4d9a-8e6a-6328ef29c93b/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 20:24:10,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fa51509-98eb-4d9a-8e6a-6328ef29c93b/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:24:10,867 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-20 20:24:10,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:24:10,867 INFO L85 PathProgramCache]: Analyzing trace with hash -772542023, now seen corresponding path program 1 times [2022-11-20 20:24:10,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:24:10,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636461453] [2022-11-20 20:24:10,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:24:10,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:24:10,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:24:10,919 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:24:10,920 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:24:10,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636461453] [2022-11-20 20:24:10,920 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636461453] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 20:24:10,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [970646758] [2022-11-20 20:24:10,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:24:10,921 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:24:10,921 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fa51509-98eb-4d9a-8e6a-6328ef29c93b/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:24:10,922 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fa51509-98eb-4d9a-8e6a-6328ef29c93b/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 20:24:10,952 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fa51509-98eb-4d9a-8e6a-6328ef29c93b/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 20:24:10,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:24:10,970 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 20:24:10,970 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:24:10,996 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 20:24:11,000 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 20:24:11,000 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [970646758] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:24:11,000 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 20:24:11,000 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [3] total 4 [2022-11-20 20:24:11,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315822191] [2022-11-20 20:24:11,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:24:11,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:24:11,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:24:11,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:24:11,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-20 20:24:11,002 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 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) [2022-11-20 20:24:11,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:24:11,026 INFO L93 Difference]: Finished difference Result 20 states and 22 transitions. [2022-11-20 20:24:11,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:24:11,027 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 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 10 [2022-11-20 20:24:11,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:24:11,027 INFO L225 Difference]: With dead ends: 20 [2022-11-20 20:24:11,027 INFO L226 Difference]: Without dead ends: 19 [2022-11-20 20:24:11,028 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-20 20:24:11,029 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 2 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 20:24:11,029 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 12 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 20:24:11,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-11-20 20:24:11,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 18. [2022-11-20 20:24:11,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 16 states have (on average 1.1875) internal successors, (19), 17 states have internal predecessors, (19), 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) [2022-11-20 20:24:11,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2022-11-20 20:24:11,033 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 10 [2022-11-20 20:24:11,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:24:11,033 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2022-11-20 20:24:11,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 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) [2022-11-20 20:24:11,034 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2022-11-20 20:24:11,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-20 20:24:11,034 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:24:11,034 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:24:11,059 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fa51509-98eb-4d9a-8e6a-6328ef29c93b/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-20 20:24:11,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fa51509-98eb-4d9a-8e6a-6328ef29c93b/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:24:11,235 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-20 20:24:11,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:24:11,236 INFO L85 PathProgramCache]: Analyzing trace with hash 1821001121, now seen corresponding path program 1 times [2022-11-20 20:24:11,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:24:11,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681223321] [2022-11-20 20:24:11,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:24:11,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:24:11,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:24:11,276 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:24:11,276 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:24:11,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681223321] [2022-11-20 20:24:11,277 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [681223321] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 20:24:11,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [19772021] [2022-11-20 20:24:11,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:24:11,277 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:24:11,278 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fa51509-98eb-4d9a-8e6a-6328ef29c93b/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:24:11,279 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fa51509-98eb-4d9a-8e6a-6328ef29c93b/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 20:24:11,302 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fa51509-98eb-4d9a-8e6a-6328ef29c93b/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-20 20:24:11,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:24:11,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 20:24:11,330 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:24:11,357 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 20:24:11,358 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 20:24:11,358 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [19772021] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:24:11,358 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 20:24:11,358 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [3] total 4 [2022-11-20 20:24:11,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943992780] [2022-11-20 20:24:11,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:24:11,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:24:11,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:24:11,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:24:11,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-20 20:24:11,360 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 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) [2022-11-20 20:24:11,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:24:11,369 INFO L93 Difference]: Finished difference Result 18 states and 19 transitions. [2022-11-20 20:24:11,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:24:11,370 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 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 11 [2022-11-20 20:24:11,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:24:11,372 INFO L225 Difference]: With dead ends: 18 [2022-11-20 20:24:11,372 INFO L226 Difference]: Without dead ends: 17 [2022-11-20 20:24:11,372 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-20 20:24:11,374 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 1 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 20:24:11,377 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 7 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 20:24:11,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-11-20 20:24:11,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2022-11-20 20:24:11,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.125) internal successors, (18), 16 states have internal predecessors, (18), 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) [2022-11-20 20:24:11,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2022-11-20 20:24:11,384 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 11 [2022-11-20 20:24:11,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:24:11,385 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2022-11-20 20:24:11,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 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) [2022-11-20 20:24:11,385 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2022-11-20 20:24:11,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-20 20:24:11,386 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:24:11,386 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:24:11,391 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fa51509-98eb-4d9a-8e6a-6328ef29c93b/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-11-20 20:24:11,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fa51509-98eb-4d9a-8e6a-6328ef29c93b/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:24:11,591 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-20 20:24:11,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:24:11,592 INFO L85 PathProgramCache]: Analyzing trace with hash -1389469908, now seen corresponding path program 1 times [2022-11-20 20:24:11,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:24:11,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373485576] [2022-11-20 20:24:11,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:24:11,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:24:11,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:24:11,660 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-20 20:24:11,661 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:24:11,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373485576] [2022-11-20 20:24:11,661 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373485576] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 20:24:11,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [518173086] [2022-11-20 20:24:11,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:24:11,663 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:24:11,663 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fa51509-98eb-4d9a-8e6a-6328ef29c93b/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:24:11,664 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fa51509-98eb-4d9a-8e6a-6328ef29c93b/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 20:24:11,669 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fa51509-98eb-4d9a-8e6a-6328ef29c93b/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-20 20:24:11,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:24:11,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 20:24:11,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:24:11,728 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-20 20:24:11,728 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 20:24:11,753 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-20 20:24:11,754 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [518173086] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 20:24:11,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [667028939] [2022-11-20 20:24:11,771 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2022-11-20 20:24:11,772 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 20:24:11,775 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 20:24:11,780 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 20:24:11,781 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 20:24:12,216 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 20:24:12,537 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '548#(and (<= 51 |ULTIMATE.start_main_~x~0#1|) (< 2147483646 |ULTIMATE.start_main_~y~0#1|) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~x~0#1| 101) (= |#NULL.base| 0))' at error location [2022-11-20 20:24:12,538 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-20 20:24:12,538 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 20:24:12,538 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-11-20 20:24:12,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560106074] [2022-11-20 20:24:12,538 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 20:24:12,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 20:24:12,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:24:12,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 20:24:12,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2022-11-20 20:24:12,540 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 6 states have internal predecessors, (26), 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) [2022-11-20 20:24:12,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:24:12,610 INFO L93 Difference]: Finished difference Result 39 states and 43 transitions. [2022-11-20 20:24:12,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 20:24:12,611 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 6 states have internal predecessors, (26), 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 [2022-11-20 20:24:12,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:24:12,612 INFO L225 Difference]: With dead ends: 39 [2022-11-20 20:24:12,612 INFO L226 Difference]: Without dead ends: 29 [2022-11-20 20:24:12,613 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2022-11-20 20:24:12,613 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 8 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 20:24:12,614 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 15 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 20:24:12,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-11-20 20:24:12,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2022-11-20 20:24:12,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.0714285714285714) internal successors, (30), 28 states have internal predecessors, (30), 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) [2022-11-20 20:24:12,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2022-11-20 20:24:12,623 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 16 [2022-11-20 20:24:12,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:24:12,623 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2022-11-20 20:24:12,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 6 states have internal predecessors, (26), 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) [2022-11-20 20:24:12,626 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2022-11-20 20:24:12,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-20 20:24:12,627 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:24:12,627 INFO L195 NwaCegarLoop]: trace histogram [6, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1] [2022-11-20 20:24:12,636 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fa51509-98eb-4d9a-8e6a-6328ef29c93b/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-20 20:24:12,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fa51509-98eb-4d9a-8e6a-6328ef29c93b/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-20 20:24:12,828 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-20 20:24:12,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:24:12,828 INFO L85 PathProgramCache]: Analyzing trace with hash 402175709, now seen corresponding path program 2 times [2022-11-20 20:24:12,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:24:12,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368699026] [2022-11-20 20:24:12,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:24:12,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:24:12,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:24:12,887 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-11-20 20:24:12,887 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:24:12,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368699026] [2022-11-20 20:24:12,888 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368699026] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 20:24:12,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1732228613] [2022-11-20 20:24:12,888 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 20:24:12,888 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:24:12,888 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fa51509-98eb-4d9a-8e6a-6328ef29c93b/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:24:12,889 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fa51509-98eb-4d9a-8e6a-6328ef29c93b/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 20:24:12,906 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fa51509-98eb-4d9a-8e6a-6328ef29c93b/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-20 20:24:12,933 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-20 20:24:12,933 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 20:24:12,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 20:24:12,935 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:24:12,990 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-11-20 20:24:12,991 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 20:24:13,052 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-11-20 20:24:13,052 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1732228613] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 20:24:13,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [162074187] [2022-11-20 20:24:13,056 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2022-11-20 20:24:13,056 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 20:24:13,056 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 20:24:13,056 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 20:24:13,057 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 20:24:13,324 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 20:24:13,622 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '804#(and (<= 51 |ULTIMATE.start_main_~x~0#1|) (< 2147483646 |ULTIMATE.start_main_~y~0#1|) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~x~0#1| 101) (= |#NULL.base| 0))' at error location [2022-11-20 20:24:13,622 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-20 20:24:13,622 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 20:24:13,622 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 4 [2022-11-20 20:24:13,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192908830] [2022-11-20 20:24:13,622 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 20:24:13,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 20:24:13,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:24:13,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 20:24:13,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2022-11-20 20:24:13,624 INFO L87 Difference]: Start difference. First operand 29 states and 30 transitions. Second operand has 6 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 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) [2022-11-20 20:24:13,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:24:13,658 INFO L93 Difference]: Finished difference Result 48 states and 51 transitions. [2022-11-20 20:24:13,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 20:24:13,659 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 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 [2022-11-20 20:24:13,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:24:13,660 INFO L225 Difference]: With dead ends: 48 [2022-11-20 20:24:13,660 INFO L226 Difference]: Without dead ends: 47 [2022-11-20 20:24:13,660 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2022-11-20 20:24:13,661 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 7 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 20:24:13,662 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 24 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 20:24:13,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2022-11-20 20:24:13,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2022-11-20 20:24:13,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 46 states have (on average 1.0434782608695652) internal successors, (48), 46 states have internal predecessors, (48), 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) [2022-11-20 20:24:13,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 48 transitions. [2022-11-20 20:24:13,676 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 48 transitions. Word has length 28 [2022-11-20 20:24:13,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:24:13,676 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 48 transitions. [2022-11-20 20:24:13,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 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) [2022-11-20 20:24:13,677 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 48 transitions. [2022-11-20 20:24:13,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-11-20 20:24:13,678 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:24:13,679 INFO L195 NwaCegarLoop]: trace histogram [9, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1] [2022-11-20 20:24:13,688 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fa51509-98eb-4d9a-8e6a-6328ef29c93b/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-20 20:24:13,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fa51509-98eb-4d9a-8e6a-6328ef29c93b/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-20 20:24:13,884 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-20 20:24:13,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:24:13,884 INFO L85 PathProgramCache]: Analyzing trace with hash -1734490250, now seen corresponding path program 3 times [2022-11-20 20:24:13,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:24:13,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892788065] [2022-11-20 20:24:13,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:24:13,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:24:13,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:24:14,037 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 40 proven. 32 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-11-20 20:24:14,038 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:24:14,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892788065] [2022-11-20 20:24:14,038 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892788065] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 20:24:14,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1241665235] [2022-11-20 20:24:14,038 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-20 20:24:14,038 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:24:14,039 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fa51509-98eb-4d9a-8e6a-6328ef29c93b/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:24:14,040 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fa51509-98eb-4d9a-8e6a-6328ef29c93b/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 20:24:14,069 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fa51509-98eb-4d9a-8e6a-6328ef29c93b/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-20 20:24:14,107 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-20 20:24:14,108 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 20:24:14,108 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 20:24:14,111 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:24:14,146 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 40 proven. 32 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-11-20 20:24:14,147 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 20:24:14,238 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 40 proven. 32 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-11-20 20:24:14,238 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1241665235] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 20:24:14,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [754171121] [2022-11-20 20:24:14,240 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2022-11-20 20:24:14,240 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 20:24:14,241 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 20:24:14,241 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 20:24:14,241 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 20:24:14,440 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 20:24:14,736 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1207#(and (<= 51 |ULTIMATE.start_main_~x~0#1|) (< 2147483646 |ULTIMATE.start_main_~y~0#1|) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~x~0#1| 101) (= |#NULL.base| 0))' at error location [2022-11-20 20:24:14,736 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-20 20:24:14,736 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 20:24:14,737 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2022-11-20 20:24:14,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261233147] [2022-11-20 20:24:14,737 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 20:24:14,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-20 20:24:14,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:24:14,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-20 20:24:14,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=280, Unknown=0, NotChecked=0, Total=380 [2022-11-20 20:24:14,738 INFO L87 Difference]: Start difference. First operand 47 states and 48 transitions. Second operand has 13 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 12 states have internal predecessors, (50), 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) [2022-11-20 20:24:14,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:24:14,822 INFO L93 Difference]: Finished difference Result 99 states and 106 transitions. [2022-11-20 20:24:14,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-20 20:24:14,823 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 12 states have internal predecessors, (50), 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 46 [2022-11-20 20:24:14,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:24:14,827 INFO L225 Difference]: With dead ends: 99 [2022-11-20 20:24:14,827 INFO L226 Difference]: Without dead ends: 71 [2022-11-20 20:24:14,828 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=100, Invalid=280, Unknown=0, NotChecked=0, Total=380 [2022-11-20 20:24:14,831 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 30 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 20:24:14,831 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 15 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 20:24:14,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2022-11-20 20:24:14,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2022-11-20 20:24:14,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 70 states have (on average 1.0285714285714285) internal successors, (72), 70 states have internal predecessors, (72), 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) [2022-11-20 20:24:14,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 72 transitions. [2022-11-20 20:24:14,850 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 72 transitions. Word has length 46 [2022-11-20 20:24:14,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:24:14,851 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 72 transitions. [2022-11-20 20:24:14,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 12 states have internal predecessors, (50), 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) [2022-11-20 20:24:14,851 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 72 transitions. [2022-11-20 20:24:14,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-11-20 20:24:14,853 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:24:14,853 INFO L195 NwaCegarLoop]: trace histogram [15, 10, 10, 10, 5, 5, 5, 4, 4, 1, 1] [2022-11-20 20:24:14,863 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fa51509-98eb-4d9a-8e6a-6328ef29c93b/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-20 20:24:15,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fa51509-98eb-4d9a-8e6a-6328ef29c93b/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:24:15,059 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-20 20:24:15,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:24:15,059 INFO L85 PathProgramCache]: Analyzing trace with hash 605257176, now seen corresponding path program 4 times [2022-11-20 20:24:15,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:24:15,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111889964] [2022-11-20 20:24:15,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:24:15,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:24:15,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:24:15,283 INFO L134 CoverageAnalysis]: Checked inductivity of 336 backedges. 88 proven. 200 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-11-20 20:24:15,283 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:24:15,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111889964] [2022-11-20 20:24:15,284 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111889964] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 20:24:15,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [235752032] [2022-11-20 20:24:15,284 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-20 20:24:15,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:24:15,285 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fa51509-98eb-4d9a-8e6a-6328ef29c93b/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:24:15,286 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fa51509-98eb-4d9a-8e6a-6328ef29c93b/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 20:24:15,306 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fa51509-98eb-4d9a-8e6a-6328ef29c93b/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-20 20:24:15,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:24:15,371 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-20 20:24:15,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:24:15,452 INFO L134 CoverageAnalysis]: Checked inductivity of 336 backedges. 88 proven. 200 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-11-20 20:24:15,452 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 20:24:15,730 INFO L134 CoverageAnalysis]: Checked inductivity of 336 backedges. 88 proven. 200 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-11-20 20:24:15,730 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [235752032] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 20:24:15,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [237488093] [2022-11-20 20:24:15,732 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2022-11-20 20:24:15,732 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 20:24:15,732 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 20:24:15,732 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 20:24:15,733 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 20:24:15,879 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 20:24:16,213 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1857#(and (<= 51 |ULTIMATE.start_main_~x~0#1|) (< 2147483646 |ULTIMATE.start_main_~y~0#1|) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~x~0#1| 101) (= |#NULL.base| 0))' at error location [2022-11-20 20:24:16,213 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-20 20:24:16,213 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 20:24:16,213 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 24 [2022-11-20 20:24:16,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095406787] [2022-11-20 20:24:16,214 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 20:24:16,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-20 20:24:16,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:24:16,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-20 20:24:16,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=322, Invalid=670, Unknown=0, NotChecked=0, Total=992 [2022-11-20 20:24:16,216 INFO L87 Difference]: Start difference. First operand 71 states and 72 transitions. Second operand has 25 states, 25 states have (on average 3.92) internal successors, (98), 24 states have internal predecessors, (98), 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) [2022-11-20 20:24:16,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:24:16,370 INFO L93 Difference]: Finished difference Result 147 states and 160 transitions. [2022-11-20 20:24:16,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-20 20:24:16,371 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.92) internal successors, (98), 24 states have internal predecessors, (98), 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 70 [2022-11-20 20:24:16,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:24:16,372 INFO L225 Difference]: With dead ends: 147 [2022-11-20 20:24:16,372 INFO L226 Difference]: Without dead ends: 119 [2022-11-20 20:24:16,372 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 276 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=322, Invalid=670, Unknown=0, NotChecked=0, Total=992 [2022-11-20 20:24:16,373 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 66 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 20:24:16,373 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 12 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 20:24:16,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2022-11-20 20:24:16,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2022-11-20 20:24:16,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 118 states have (on average 1.0169491525423728) internal successors, (120), 118 states have internal predecessors, (120), 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) [2022-11-20 20:24:16,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 120 transitions. [2022-11-20 20:24:16,383 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 120 transitions. Word has length 70 [2022-11-20 20:24:16,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:24:16,383 INFO L495 AbstractCegarLoop]: Abstraction has 119 states and 120 transitions. [2022-11-20 20:24:16,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.92) internal successors, (98), 24 states have internal predecessors, (98), 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) [2022-11-20 20:24:16,384 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 120 transitions. [2022-11-20 20:24:16,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-11-20 20:24:16,385 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:24:16,385 INFO L195 NwaCegarLoop]: trace histogram [27, 22, 22, 22, 5, 5, 5, 4, 4, 1, 1] [2022-11-20 20:24:16,391 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fa51509-98eb-4d9a-8e6a-6328ef29c93b/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-20 20:24:16,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fa51509-98eb-4d9a-8e6a-6328ef29c93b/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:24:16,591 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-20 20:24:16,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:24:16,592 INFO L85 PathProgramCache]: Analyzing trace with hash 1701009564, now seen corresponding path program 5 times [2022-11-20 20:24:16,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:24:16,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703555711] [2022-11-20 20:24:16,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:24:16,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:24:16,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:24:17,298 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 184 proven. 968 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-11-20 20:24:17,298 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:24:17,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703555711] [2022-11-20 20:24:17,298 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703555711] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 20:24:17,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1869381705] [2022-11-20 20:24:17,298 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 20:24:17,299 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:24:17,299 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fa51509-98eb-4d9a-8e6a-6328ef29c93b/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:24:17,303 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fa51509-98eb-4d9a-8e6a-6328ef29c93b/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 20:24:17,340 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fa51509-98eb-4d9a-8e6a-6328ef29c93b/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-20 20:24:17,368 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-11-20 20:24:17,368 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 20:24:17,369 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 20:24:17,371 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:24:17,623 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 232 refuted. 0 times theorem prover too weak. 968 trivial. 0 not checked. [2022-11-20 20:24:17,623 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 20:24:17,887 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 232 refuted. 0 times theorem prover too weak. 968 trivial. 0 not checked. [2022-11-20 20:24:17,888 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1869381705] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 20:24:17,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [207907095] [2022-11-20 20:24:17,890 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2022-11-20 20:24:17,890 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 20:24:17,890 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 20:24:17,890 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 20:24:17,890 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 20:24:18,014 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 20:24:18,448 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2925#(and (<= 51 |ULTIMATE.start_main_~x~0#1|) (< 2147483646 |ULTIMATE.start_main_~y~0#1|) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~x~0#1| 101) (= |#NULL.base| 0))' at error location [2022-11-20 20:24:18,449 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-20 20:24:18,449 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 20:24:18,449 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 5, 5] total 34 [2022-11-20 20:24:18,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024298389] [2022-11-20 20:24:18,449 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 20:24:18,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-11-20 20:24:18,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:24:18,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-11-20 20:24:18,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=387, Invalid=1335, Unknown=0, NotChecked=0, Total=1722 [2022-11-20 20:24:18,451 INFO L87 Difference]: Start difference. First operand 119 states and 120 transitions. Second operand has 35 states, 35 states have (on average 4.685714285714286) internal successors, (164), 34 states have internal predecessors, (164), 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) [2022-11-20 20:24:19,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:24:19,059 INFO L93 Difference]: Finished difference Result 189 states and 197 transitions. [2022-11-20 20:24:19,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-20 20:24:19,060 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 4.685714285714286) internal successors, (164), 34 states have internal predecessors, (164), 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 118 [2022-11-20 20:24:19,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:24:19,061 INFO L225 Difference]: With dead ends: 189 [2022-11-20 20:24:19,061 INFO L226 Difference]: Without dead ends: 161 [2022-11-20 20:24:19,063 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 399 GetRequests, 336 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 815 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1192, Invalid=2968, Unknown=0, NotChecked=0, Total=4160 [2022-11-20 20:24:19,063 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 277 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 20:24:19,063 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [277 Valid, 47 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 20:24:19,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2022-11-20 20:24:19,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 159. [2022-11-20 20:24:19,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 158 states have (on average 1.0126582278481013) internal successors, (160), 158 states have internal predecessors, (160), 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) [2022-11-20 20:24:19,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 160 transitions. [2022-11-20 20:24:19,083 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 160 transitions. Word has length 118 [2022-11-20 20:24:19,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:24:19,083 INFO L495 AbstractCegarLoop]: Abstraction has 159 states and 160 transitions. [2022-11-20 20:24:19,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 4.685714285714286) internal successors, (164), 34 states have internal predecessors, (164), 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) [2022-11-20 20:24:19,084 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 160 transitions. [2022-11-20 20:24:19,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-11-20 20:24:19,093 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:24:19,093 INFO L195 NwaCegarLoop]: trace histogram [34, 23, 23, 23, 11, 11, 11, 10, 10, 1, 1] [2022-11-20 20:24:19,103 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fa51509-98eb-4d9a-8e6a-6328ef29c93b/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-20 20:24:19,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fa51509-98eb-4d9a-8e6a-6328ef29c93b/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-20 20:24:19,299 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-20 20:24:19,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:24:19,299 INFO L85 PathProgramCache]: Analyzing trace with hash -137410807, now seen corresponding path program 6 times [2022-11-20 20:24:19,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:24:19,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914331346] [2022-11-20 20:24:19,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:24:19,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:24:19,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:24:20,113 INFO L134 CoverageAnalysis]: Checked inductivity of 1838 backedges. 480 proven. 1058 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2022-11-20 20:24:20,114 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:24:20,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914331346] [2022-11-20 20:24:20,114 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914331346] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 20:24:20,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1581863957] [2022-11-20 20:24:20,114 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-20 20:24:20,114 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:24:20,114 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fa51509-98eb-4d9a-8e6a-6328ef29c93b/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:24:20,116 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fa51509-98eb-4d9a-8e6a-6328ef29c93b/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 20:24:20,138 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fa51509-98eb-4d9a-8e6a-6328ef29c93b/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-20 20:24:20,190 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-20 20:24:20,191 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 20:24:20,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-20 20:24:20,220 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:24:20,378 INFO L134 CoverageAnalysis]: Checked inductivity of 1838 backedges. 480 proven. 1058 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2022-11-20 20:24:20,378 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 20:24:21,365 INFO L134 CoverageAnalysis]: Checked inductivity of 1838 backedges. 480 proven. 1058 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2022-11-20 20:24:21,366 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1581863957] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 20:24:21,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1369528822] [2022-11-20 20:24:21,368 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2022-11-20 20:24:21,368 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 20:24:21,368 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 20:24:21,368 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 20:24:21,368 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 20:24:21,498 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 20:24:21,892 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4391#(and (<= 51 |ULTIMATE.start_main_~x~0#1|) (< 2147483646 |ULTIMATE.start_main_~y~0#1|) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~x~0#1| 101) (= |#NULL.base| 0))' at error location [2022-11-20 20:24:21,893 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-20 20:24:21,893 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 20:24:21,893 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 50 [2022-11-20 20:24:21,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514494381] [2022-11-20 20:24:21,894 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 20:24:21,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2022-11-20 20:24:21,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:24:21,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2022-11-20 20:24:21,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1297, Invalid=2009, Unknown=0, NotChecked=0, Total=3306 [2022-11-20 20:24:21,897 INFO L87 Difference]: Start difference. First operand 159 states and 160 transitions. Second operand has 51 states, 51 states have (on average 3.9607843137254903) internal successors, (202), 50 states have internal predecessors, (202), 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) [2022-11-20 20:24:22,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:24:22,180 INFO L93 Difference]: Finished difference Result 323 states and 349 transitions. [2022-11-20 20:24:22,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-11-20 20:24:22,181 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 3.9607843137254903) internal successors, (202), 50 states have internal predecessors, (202), 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 158 [2022-11-20 20:24:22,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:24:22,182 INFO L225 Difference]: With dead ends: 323 [2022-11-20 20:24:22,183 INFO L226 Difference]: Without dead ends: 259 [2022-11-20 20:24:22,184 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 497 GetRequests, 441 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 601 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1297, Invalid=2009, Unknown=0, NotChecked=0, Total=3306 [2022-11-20 20:24:22,185 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 144 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 20:24:22,185 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 12 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 20:24:22,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2022-11-20 20:24:22,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 259. [2022-11-20 20:24:22,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 258 states have (on average 1.0077519379844961) internal successors, (260), 258 states have internal predecessors, (260), 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) [2022-11-20 20:24:22,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 260 transitions. [2022-11-20 20:24:22,198 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 260 transitions. Word has length 158 [2022-11-20 20:24:22,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:24:22,198 INFO L495 AbstractCegarLoop]: Abstraction has 259 states and 260 transitions. [2022-11-20 20:24:22,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 3.9607843137254903) internal successors, (202), 50 states have internal predecessors, (202), 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) [2022-11-20 20:24:22,199 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 260 transitions. [2022-11-20 20:24:22,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2022-11-20 20:24:22,201 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:24:22,201 INFO L195 NwaCegarLoop]: trace histogram [59, 48, 48, 48, 11, 11, 11, 10, 10, 1, 1] [2022-11-20 20:24:22,215 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fa51509-98eb-4d9a-8e6a-6328ef29c93b/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-20 20:24:22,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fa51509-98eb-4d9a-8e6a-6328ef29c93b/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-20 20:24:22,409 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-20 20:24:22,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:24:22,410 INFO L85 PathProgramCache]: Analyzing trace with hash -762402804, now seen corresponding path program 7 times [2022-11-20 20:24:22,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:24:22,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110779340] [2022-11-20 20:24:22,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:24:22,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:24:22,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:24:24,730 INFO L134 CoverageAnalysis]: Checked inductivity of 5888 backedges. 980 proven. 4608 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2022-11-20 20:24:24,730 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:24:24,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110779340] [2022-11-20 20:24:24,730 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110779340] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 20:24:24,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1750717821] [2022-11-20 20:24:24,731 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-20 20:24:24,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:24:24,731 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fa51509-98eb-4d9a-8e6a-6328ef29c93b/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:24:24,735 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fa51509-98eb-4d9a-8e6a-6328ef29c93b/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 20:24:24,763 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fa51509-98eb-4d9a-8e6a-6328ef29c93b/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-20 20:24:24,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:24:24,834 INFO L263 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 50 conjunts are in the unsatisfiable core [2022-11-20 20:24:24,838 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:24:25,157 INFO L134 CoverageAnalysis]: Checked inductivity of 5888 backedges. 980 proven. 4608 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2022-11-20 20:24:25,158 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 20:24:26,573 INFO L134 CoverageAnalysis]: Checked inductivity of 5888 backedges. 980 proven. 4608 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2022-11-20 20:24:26,573 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1750717821] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 20:24:26,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [132157461] [2022-11-20 20:24:26,576 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2022-11-20 20:24:26,576 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 20:24:26,576 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 20:24:26,576 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 20:24:26,577 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 20:24:26,705 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 20:24:27,167 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '6703#(and (<= 51 |ULTIMATE.start_main_~x~0#1|) (< 2147483646 |ULTIMATE.start_main_~y~0#1|) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~x~0#1| 101) (= |#NULL.base| 0))' at error location [2022-11-20 20:24:27,167 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-20 20:24:27,167 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 20:24:27,168 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50, 50] total 52 [2022-11-20 20:24:27,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821363581] [2022-11-20 20:24:27,168 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 20:24:27,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-11-20 20:24:27,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:24:27,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-11-20 20:24:27,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1400, Invalid=2140, Unknown=0, NotChecked=0, Total=3540 [2022-11-20 20:24:27,171 INFO L87 Difference]: Start difference. First operand 259 states and 260 transitions. Second operand has 53 states, 53 states have (on average 4.018867924528302) internal successors, (213), 52 states have internal predecessors, (213), 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) [2022-11-20 20:24:27,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:24:27,483 INFO L93 Difference]: Finished difference Result 331 states and 334 transitions. [2022-11-20 20:24:27,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-11-20 20:24:27,484 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 4.018867924528302) internal successors, (213), 52 states have internal predecessors, (213), 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 258 [2022-11-20 20:24:27,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:24:27,485 INFO L225 Difference]: With dead ends: 331 [2022-11-20 20:24:27,485 INFO L226 Difference]: Without dead ends: 267 [2022-11-20 20:24:27,490 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 822 GetRequests, 716 SyntacticMatches, 48 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1730 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1400, Invalid=2140, Unknown=0, NotChecked=0, Total=3540 [2022-11-20 20:24:27,491 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 100 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 20:24:27,491 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 21 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 20:24:27,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2022-11-20 20:24:27,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 267. [2022-11-20 20:24:27,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 266 states have (on average 1.0075187969924813) internal successors, (268), 266 states have internal predecessors, (268), 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) [2022-11-20 20:24:27,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 268 transitions. [2022-11-20 20:24:27,504 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 268 transitions. Word has length 258 [2022-11-20 20:24:27,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:24:27,505 INFO L495 AbstractCegarLoop]: Abstraction has 267 states and 268 transitions. [2022-11-20 20:24:27,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 4.018867924528302) internal successors, (213), 52 states have internal predecessors, (213), 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) [2022-11-20 20:24:27,506 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 268 transitions. [2022-11-20 20:24:27,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2022-11-20 20:24:27,509 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:24:27,509 INFO L195 NwaCegarLoop]: trace histogram [61, 50, 50, 50, 11, 11, 11, 10, 10, 1, 1] [2022-11-20 20:24:27,523 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fa51509-98eb-4d9a-8e6a-6328ef29c93b/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-20 20:24:27,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fa51509-98eb-4d9a-8e6a-6328ef29c93b/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:24:27,715 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-20 20:24:27,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:24:27,716 INFO L85 PathProgramCache]: Analyzing trace with hash 2143616642, now seen corresponding path program 8 times [2022-11-20 20:24:27,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:24:27,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142513361] [2022-11-20 20:24:27,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:24:27,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:24:27,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:24:28,150 INFO L134 CoverageAnalysis]: Checked inductivity of 6320 backedges. 0 proven. 1320 refuted. 0 times theorem prover too weak. 5000 trivial. 0 not checked. [2022-11-20 20:24:28,150 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:24:28,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142513361] [2022-11-20 20:24:28,150 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142513361] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 20:24:28,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1157446354] [2022-11-20 20:24:28,151 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 20:24:28,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:24:28,151 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fa51509-98eb-4d9a-8e6a-6328ef29c93b/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:24:28,152 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fa51509-98eb-4d9a-8e6a-6328ef29c93b/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 20:24:28,159 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fa51509-98eb-4d9a-8e6a-6328ef29c93b/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-20 20:24:28,226 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2022-11-20 20:24:28,226 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 20:24:28,227 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-20 20:24:28,230 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:24:28,608 INFO L134 CoverageAnalysis]: Checked inductivity of 6320 backedges. 0 proven. 1320 refuted. 0 times theorem prover too weak. 5000 trivial. 0 not checked. [2022-11-20 20:24:28,608 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 20:24:29,182 INFO L134 CoverageAnalysis]: Checked inductivity of 6320 backedges. 0 proven. 1320 refuted. 0 times theorem prover too weak. 5000 trivial. 0 not checked. [2022-11-20 20:24:29,182 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1157446354] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 20:24:29,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1952894062] [2022-11-20 20:24:29,184 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2022-11-20 20:24:29,185 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 20:24:29,185 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 20:24:29,185 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 20:24:29,185 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 20:24:29,304 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 20:24:29,599 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '9054#(and (<= 51 |ULTIMATE.start_main_~x~0#1|) (< 2147483646 |ULTIMATE.start_main_~y~0#1|) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~x~0#1| 101) (= |#NULL.base| 0))' at error location [2022-11-20 20:24:29,599 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-20 20:24:29,599 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 20:24:29,600 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 22 [2022-11-20 20:24:29,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595510489] [2022-11-20 20:24:29,600 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 20:24:29,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-20 20:24:29,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:24:29,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-20 20:24:29,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=298, Invalid=632, Unknown=0, NotChecked=0, Total=930 [2022-11-20 20:24:29,602 INFO L87 Difference]: Start difference. First operand 267 states and 268 transitions. Second operand has 24 states, 23 states have (on average 6.0) internal successors, (138), 23 states have internal predecessors, (138), 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) [2022-11-20 20:24:29,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:24:29,676 INFO L93 Difference]: Finished difference Result 340 states and 352 transitions. [2022-11-20 20:24:29,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-20 20:24:29,677 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 6.0) internal successors, (138), 23 states have internal predecessors, (138), 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 266 [2022-11-20 20:24:29,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:24:29,679 INFO L225 Difference]: With dead ends: 340 [2022-11-20 20:24:29,679 INFO L226 Difference]: Without dead ends: 339 [2022-11-20 20:24:29,679 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 807 GetRequests, 778 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=298, Invalid=632, Unknown=0, NotChecked=0, Total=930 [2022-11-20 20:24:29,680 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 48 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 20:24:29,681 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 96 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 20:24:29,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2022-11-20 20:24:29,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 339. [2022-11-20 20:24:29,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 339 states, 338 states have (on average 1.0059171597633136) internal successors, (340), 338 states have internal predecessors, (340), 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) [2022-11-20 20:24:29,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 340 transitions. [2022-11-20 20:24:29,691 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 340 transitions. Word has length 266 [2022-11-20 20:24:29,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:24:29,692 INFO L495 AbstractCegarLoop]: Abstraction has 339 states and 340 transitions. [2022-11-20 20:24:29,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 6.0) internal successors, (138), 23 states have internal predecessors, (138), 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) [2022-11-20 20:24:29,692 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 340 transitions. [2022-11-20 20:24:29,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2022-11-20 20:24:29,697 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:24:29,698 INFO L195 NwaCegarLoop]: trace histogram [73, 50, 50, 50, 23, 23, 23, 22, 22, 1, 1] [2022-11-20 20:24:29,706 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fa51509-98eb-4d9a-8e6a-6328ef29c93b/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-20 20:24:29,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fa51509-98eb-4d9a-8e6a-6328ef29c93b/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-20 20:24:29,906 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-20 20:24:29,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:24:29,907 INFO L85 PathProgramCache]: Analyzing trace with hash 952560230, now seen corresponding path program 9 times [2022-11-20 20:24:29,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:24:29,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940157899] [2022-11-20 20:24:29,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:24:29,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:24:29,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:24:30,845 INFO L134 CoverageAnalysis]: Checked inductivity of 8696 backedges. 0 proven. 3696 refuted. 0 times theorem prover too weak. 5000 trivial. 0 not checked. [2022-11-20 20:24:30,845 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:24:30,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940157899] [2022-11-20 20:24:30,845 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940157899] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 20:24:30,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [707445328] [2022-11-20 20:24:30,845 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-20 20:24:30,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:24:30,846 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fa51509-98eb-4d9a-8e6a-6328ef29c93b/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:24:30,847 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fa51509-98eb-4d9a-8e6a-6328ef29c93b/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 20:24:30,874 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fa51509-98eb-4d9a-8e6a-6328ef29c93b/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-20 20:24:30,973 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-20 20:24:30,973 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 20:24:30,975 INFO L263 TraceCheckSpWp]: Trace formula consists of 552 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-20 20:24:30,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:24:31,466 INFO L134 CoverageAnalysis]: Checked inductivity of 8696 backedges. 0 proven. 3696 refuted. 0 times theorem prover too weak. 5000 trivial. 0 not checked. [2022-11-20 20:24:31,466 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 20:24:32,732 INFO L134 CoverageAnalysis]: Checked inductivity of 8696 backedges. 0 proven. 3696 refuted. 0 times theorem prover too weak. 5000 trivial. 0 not checked. [2022-11-20 20:24:32,732 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [707445328] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 20:24:32,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1108905084] [2022-11-20 20:24:32,734 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2022-11-20 20:24:32,734 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 20:24:32,734 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 20:24:32,735 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 20:24:32,735 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 20:24:32,880 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 20:24:33,235 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '11956#(and (<= 51 |ULTIMATE.start_main_~x~0#1|) (< 2147483646 |ULTIMATE.start_main_~y~0#1|) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~x~0#1| 101) (= |#NULL.base| 0))' at error location [2022-11-20 20:24:33,236 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-20 20:24:33,236 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 20:24:33,236 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 46 [2022-11-20 20:24:33,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107787874] [2022-11-20 20:24:33,236 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 20:24:33,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-11-20 20:24:33,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:24:33,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-11-20 20:24:33,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1150, Invalid=1820, Unknown=0, NotChecked=0, Total=2970 [2022-11-20 20:24:33,239 INFO L87 Difference]: Start difference. First operand 339 states and 340 transitions. Second operand has 48 states, 47 states have (on average 6.0) internal successors, (282), 47 states have internal predecessors, (282), 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) [2022-11-20 20:24:33,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:24:33,424 INFO L93 Difference]: Finished difference Result 484 states and 508 transitions. [2022-11-20 20:24:33,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-11-20 20:24:33,425 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 6.0) internal successors, (282), 47 states have internal predecessors, (282), 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 338 [2022-11-20 20:24:33,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:24:33,427 INFO L225 Difference]: With dead ends: 484 [2022-11-20 20:24:33,428 INFO L226 Difference]: Without dead ends: 483 [2022-11-20 20:24:33,429 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1035 GetRequests, 982 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 474 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1150, Invalid=1820, Unknown=0, NotChecked=0, Total=2970 [2022-11-20 20:24:33,429 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 87 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 20:24:33,430 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 192 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 20:24:33,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2022-11-20 20:24:33,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 483. [2022-11-20 20:24:33,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 483 states, 482 states have (on average 1.004149377593361) internal successors, (484), 482 states have internal predecessors, (484), 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) [2022-11-20 20:24:33,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 484 transitions. [2022-11-20 20:24:33,444 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 484 transitions. Word has length 338 [2022-11-20 20:24:33,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:24:33,445 INFO L495 AbstractCegarLoop]: Abstraction has 483 states and 484 transitions. [2022-11-20 20:24:33,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 6.0) internal successors, (282), 47 states have internal predecessors, (282), 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) [2022-11-20 20:24:33,445 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 484 transitions. [2022-11-20 20:24:33,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 483 [2022-11-20 20:24:33,454 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:24:33,455 INFO L195 NwaCegarLoop]: trace histogram [97, 50, 50, 50, 47, 47, 47, 46, 46, 1, 1] [2022-11-20 20:24:33,460 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fa51509-98eb-4d9a-8e6a-6328ef29c93b/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-20 20:24:33,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fa51509-98eb-4d9a-8e6a-6328ef29c93b/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-20 20:24:33,660 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-20 20:24:33,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:24:33,661 INFO L85 PathProgramCache]: Analyzing trace with hash -2107443666, now seen corresponding path program 10 times [2022-11-20 20:24:33,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:24:33,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543181148] [2022-11-20 20:24:33,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:24:33,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:24:33,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:24:36,534 INFO L134 CoverageAnalysis]: Checked inductivity of 16040 backedges. 0 proven. 11040 refuted. 0 times theorem prover too weak. 5000 trivial. 0 not checked. [2022-11-20 20:24:36,535 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:24:36,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543181148] [2022-11-20 20:24:36,535 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543181148] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 20:24:36,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1582219597] [2022-11-20 20:24:36,536 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-20 20:24:36,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:24:36,536 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fa51509-98eb-4d9a-8e6a-6328ef29c93b/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:24:36,543 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fa51509-98eb-4d9a-8e6a-6328ef29c93b/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 20:24:36,559 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fa51509-98eb-4d9a-8e6a-6328ef29c93b/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-20 20:24:36,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:24:36,703 INFO L263 TraceCheckSpWp]: Trace formula consists of 792 conjuncts, 48 conjunts are in the unsatisfiable core [2022-11-20 20:24:36,707 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:24:37,363 INFO L134 CoverageAnalysis]: Checked inductivity of 16040 backedges. 0 proven. 11040 refuted. 0 times theorem prover too weak. 5000 trivial. 0 not checked. [2022-11-20 20:24:37,364 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 20:24:40,762 INFO L134 CoverageAnalysis]: Checked inductivity of 16040 backedges. 0 proven. 11040 refuted. 0 times theorem prover too weak. 5000 trivial. 0 not checked. [2022-11-20 20:24:40,762 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1582219597] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 20:24:40,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [335544968] [2022-11-20 20:24:40,764 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2022-11-20 20:24:40,764 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 20:24:40,765 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 20:24:40,765 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 20:24:40,765 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 20:24:40,903 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 20:24:41,363 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '16106#(and (<= 51 |ULTIMATE.start_main_~x~0#1|) (< 2147483646 |ULTIMATE.start_main_~y~0#1|) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~x~0#1| 101) (= |#NULL.base| 0))' at error location [2022-11-20 20:24:41,363 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-20 20:24:41,363 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 20:24:41,364 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47, 47] total 94 [2022-11-20 20:24:41,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117048277] [2022-11-20 20:24:41,364 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 20:24:41,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2022-11-20 20:24:41,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:24:41,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2022-11-20 20:24:41,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4582, Invalid=5924, Unknown=0, NotChecked=0, Total=10506 [2022-11-20 20:24:41,370 INFO L87 Difference]: Start difference. First operand 483 states and 484 transitions. Second operand has 96 states, 95 states have (on average 6.0) internal successors, (570), 95 states have internal predecessors, (570), 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) [2022-11-20 20:24:41,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:24:41,801 INFO L93 Difference]: Finished difference Result 772 states and 820 transitions. [2022-11-20 20:24:41,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2022-11-20 20:24:41,802 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 95 states have (on average 6.0) internal successors, (570), 95 states have internal predecessors, (570), 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 482 [2022-11-20 20:24:41,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:24:41,806 INFO L225 Difference]: With dead ends: 772 [2022-11-20 20:24:41,806 INFO L226 Difference]: Without dead ends: 771 [2022-11-20 20:24:41,808 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1491 GetRequests, 1390 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 978 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=4582, Invalid=5924, Unknown=0, NotChecked=0, Total=10506 [2022-11-20 20:24:41,809 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 156 mSDsluCounter, 376 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 384 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 20:24:41,809 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 384 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 20:24:41,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 771 states. [2022-11-20 20:24:41,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 771 to 771. [2022-11-20 20:24:41,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 771 states, 770 states have (on average 1.0025974025974025) internal successors, (772), 770 states have internal predecessors, (772), 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) [2022-11-20 20:24:41,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 771 states to 771 states and 772 transitions. [2022-11-20 20:24:41,831 INFO L78 Accepts]: Start accepts. Automaton has 771 states and 772 transitions. Word has length 482 [2022-11-20 20:24:41,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:24:41,831 INFO L495 AbstractCegarLoop]: Abstraction has 771 states and 772 transitions. [2022-11-20 20:24:41,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 95 states have (on average 6.0) internal successors, (570), 95 states have internal predecessors, (570), 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) [2022-11-20 20:24:41,832 INFO L276 IsEmpty]: Start isEmpty. Operand 771 states and 772 transitions. [2022-11-20 20:24:41,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 771 [2022-11-20 20:24:41,859 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:24:41,859 INFO L195 NwaCegarLoop]: trace histogram [145, 95, 95, 95, 94, 94, 50, 50, 50, 1, 1] [2022-11-20 20:24:41,865 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fa51509-98eb-4d9a-8e6a-6328ef29c93b/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-20 20:24:42,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fa51509-98eb-4d9a-8e6a-6328ef29c93b/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:24:42,065 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-20 20:24:42,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:24:42,066 INFO L85 PathProgramCache]: Analyzing trace with hash -1108615746, now seen corresponding path program 11 times [2022-11-20 20:24:42,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:24:42,066 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715367282] [2022-11-20 20:24:42,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:24:42,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:24:42,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:24:51,440 INFO L134 CoverageAnalysis]: Checked inductivity of 41096 backedges. 0 proven. 36096 refuted. 0 times theorem prover too weak. 5000 trivial. 0 not checked. [2022-11-20 20:24:51,440 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:24:51,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715367282] [2022-11-20 20:24:51,441 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715367282] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 20:24:51,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [750554152] [2022-11-20 20:24:51,441 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 20:24:51,441 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:24:51,442 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fa51509-98eb-4d9a-8e6a-6328ef29c93b/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:24:51,447 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fa51509-98eb-4d9a-8e6a-6328ef29c93b/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 20:24:51,470 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fa51509-98eb-4d9a-8e6a-6328ef29c93b/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-20 20:24:51,732 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 62 check-sat command(s) [2022-11-20 20:24:51,732 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 20:24:51,736 INFO L263 TraceCheckSpWp]: Trace formula consists of 932 conjuncts, 52 conjunts are in the unsatisfiable core [2022-11-20 20:24:51,748 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:24:55,247 INFO L134 CoverageAnalysis]: Checked inductivity of 41096 backedges. 25932 proven. 0 refuted. 0 times theorem prover too weak. 15164 trivial. 0 not checked. [2022-11-20 20:24:55,247 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 20:24:55,248 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [750554152] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:24:55,248 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 20:24:55,248 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [53] imperfect sequences [95] total 148 [2022-11-20 20:24:55,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77872211] [2022-11-20 20:24:55,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:24:55,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-11-20 20:24:55,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:24:55,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-11-20 20:24:55,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6033, Invalid=15723, Unknown=0, NotChecked=0, Total=21756 [2022-11-20 20:24:55,255 INFO L87 Difference]: Start difference. First operand 771 states and 772 transitions. Second operand has 53 states, 53 states have (on average 5.9245283018867925) internal successors, (314), 53 states have internal predecessors, (314), 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) [2022-11-20 20:24:55,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:24:55,786 INFO L93 Difference]: Finished difference Result 771 states and 772 transitions. [2022-11-20 20:24:55,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-11-20 20:24:55,787 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 5.9245283018867925) internal successors, (314), 53 states have internal predecessors, (314), 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 770 [2022-11-20 20:24:55,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:24:55,788 INFO L225 Difference]: With dead ends: 771 [2022-11-20 20:24:55,788 INFO L226 Difference]: Without dead ends: 0 [2022-11-20 20:24:55,792 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 864 GetRequests, 718 SyntacticMatches, 0 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4794 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=6033, Invalid=15723, Unknown=0, NotChecked=0, Total=21756 [2022-11-20 20:24:55,796 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 3 mSDsluCounter, 268 mSDsCounter, 0 mSdLazyCounter, 756 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 373 SdHoareTripleChecker+Invalid, 757 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 756 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 20:24:55,796 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 373 Invalid, 757 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 756 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 20:24:55,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-20 20:24:55,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-20 20:24:55,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2022-11-20 20:24:55,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-20 20:24:55,797 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 770 [2022-11-20 20:24:55,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:24:55,798 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-20 20:24:55,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 5.9245283018867925) internal successors, (314), 53 states have internal predecessors, (314), 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) [2022-11-20 20:24:55,798 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-20 20:24:55,798 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-20 20:24:55,802 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 6 remaining) [2022-11-20 20:24:55,803 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 6 remaining) [2022-11-20 20:24:55,803 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 6 remaining) [2022-11-20 20:24:55,803 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 6 remaining) [2022-11-20 20:24:55,803 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 6 remaining) [2022-11-20 20:24:55,803 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 6 remaining) [2022-11-20 20:24:55,810 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fa51509-98eb-4d9a-8e6a-6328ef29c93b/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-11-20 20:24:56,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fa51509-98eb-4d9a-8e6a-6328ef29c93b/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-20 20:24:56,011 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-20 20:24:57,552 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 29) no Hoare annotation was computed. [2022-11-20 20:24:57,552 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-20 20:24:57,552 INFO L899 garLoopResultBuilder]: For program point L31(line 31) no Hoare annotation was computed. [2022-11-20 20:24:57,553 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 31) no Hoare annotation was computed. [2022-11-20 20:24:57,553 INFO L899 garLoopResultBuilder]: For program point L31-1(line 31) no Hoare annotation was computed. [2022-11-20 20:24:57,553 INFO L899 garLoopResultBuilder]: For program point L29(line 29) no Hoare annotation was computed. [2022-11-20 20:24:57,553 INFO L899 garLoopResultBuilder]: For program point L29-1(line 29) no Hoare annotation was computed. [2022-11-20 20:24:57,553 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 32) no Hoare annotation was computed. [2022-11-20 20:24:57,553 INFO L899 garLoopResultBuilder]: For program point L32(line 32) no Hoare annotation was computed. [2022-11-20 20:24:57,553 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 29) no Hoare annotation was computed. [2022-11-20 20:24:57,553 INFO L899 garLoopResultBuilder]: For program point L32-1(line 32) no Hoare annotation was computed. [2022-11-20 20:24:57,554 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 31) no Hoare annotation was computed. [2022-11-20 20:24:57,554 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-20 20:24:57,554 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 32) no Hoare annotation was computed. [2022-11-20 20:24:57,554 INFO L899 garLoopResultBuilder]: For program point L28(lines 28 33) no Hoare annotation was computed. [2022-11-20 20:24:57,555 INFO L895 garLoopResultBuilder]: At program point L28-2(lines 27 34) the Hoare annotation is: (let ((.cse1 (<= |ULTIMATE.start_main_~y~0#1| 50)) (.cse0 (<= 50 |ULTIMATE.start_main_~y~0#1|))) (or (and (<= |ULTIMATE.start_main_~y~0#1| 65) (<= 65 |ULTIMATE.start_main_~x~0#1|) .cse0) (and (<= |ULTIMATE.start_main_~y~0#1| 59) .cse0 (<= 59 |ULTIMATE.start_main_~x~0#1|)) (and (<= 80 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 80) .cse0) (and (<= 90 |ULTIMATE.start_main_~x~0#1|) .cse0 (<= |ULTIMATE.start_main_~y~0#1| 90)) (and (<= 60 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 60) .cse0) (and (<= 83 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 83) .cse0) (and (<= 94 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 94) .cse0) (and (<= |ULTIMATE.start_main_~y~0#1| 53) .cse0 (<= 53 |ULTIMATE.start_main_~x~0#1|)) (and (<= 72 |ULTIMATE.start_main_~x~0#1|) .cse0 (<= |ULTIMATE.start_main_~y~0#1| 72)) (and (<= 95 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 95) .cse0) (and (<= 78 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 78) .cse0) (and (<= 64 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 64) .cse0) (and (<= 98 |ULTIMATE.start_main_~x~0#1|) (< |ULTIMATE.start_main_~y~0#1| 2147483602) .cse0) (and (= |ULTIMATE.start_main_~x~0#1| 0) .cse1 .cse0) (and (<= |ULTIMATE.start_main_~y~0#1| 79) .cse0 (<= 79 |ULTIMATE.start_main_~x~0#1|)) (and (<= 100 |ULTIMATE.start_main_~x~0#1|) (< |ULTIMATE.start_main_~y~0#1| 2147483604) .cse0) (and (<= |ULTIMATE.start_main_~y~0#1| 76) (<= 76 |ULTIMATE.start_main_~x~0#1|) .cse0) (and (<= 97 |ULTIMATE.start_main_~x~0#1|) (< |ULTIMATE.start_main_~y~0#1| 2147483601) .cse0) (and (<= |ULTIMATE.start_main_~y~0#1| 96) (<= 96 |ULTIMATE.start_main_~x~0#1|) .cse0) (and (<= |ULTIMATE.start_main_~y~0#1| 73) .cse0 (<= 73 |ULTIMATE.start_main_~x~0#1|)) (and (<= 70 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 70) .cse0) (and (<= 91 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 91) .cse0) (and (<= 63 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 63) .cse0) (and (<= |ULTIMATE.start_main_~y~0#1| 75) (<= 75 |ULTIMATE.start_main_~x~0#1|) .cse0) (and (<= |ULTIMATE.start_main_~y~0#1| 86) (<= 86 |ULTIMATE.start_main_~x~0#1|) .cse0) (and (<= 87 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 87) .cse0) (and (<= |ULTIMATE.start_main_~y~0#1| 56) (<= 56 |ULTIMATE.start_main_~x~0#1|) .cse0) (and (<= |ULTIMATE.start_main_~y~0#1| 88) (<= 88 |ULTIMATE.start_main_~x~0#1|) .cse0) (and (<= |ULTIMATE.start_main_~y~0#1| 55) (<= 55 |ULTIMATE.start_main_~x~0#1|) .cse0) (and (<= 1 |ULTIMATE.start_main_~x~0#1|) .cse1 .cse0) (and (<= 82 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 82) .cse0) (and (<= 62 |ULTIMATE.start_main_~x~0#1|) .cse0 (<= |ULTIMATE.start_main_~y~0#1| 62)) (and (<= |ULTIMATE.start_main_~y~0#1| 89) (<= 89 |ULTIMATE.start_main_~x~0#1|) .cse0) (and (<= |ULTIMATE.start_main_~y~0#1| 58) (<= 58 |ULTIMATE.start_main_~x~0#1|) .cse0) (and (<= 93 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 93) .cse0) (and (<= |ULTIMATE.start_main_~y~0#1| 66) (<= 66 |ULTIMATE.start_main_~x~0#1|) .cse0) (and (<= |ULTIMATE.start_main_~y~0#1| 77) .cse0 (<= 77 |ULTIMATE.start_main_~x~0#1|)) (and (<= |ULTIMATE.start_main_~y~0#1| 84) (<= 84 |ULTIMATE.start_main_~x~0#1|) .cse0) (and (<= 61 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 61) .cse0) (and (<= 99 |ULTIMATE.start_main_~x~0#1|) (< |ULTIMATE.start_main_~y~0#1| 2147483603) .cse0) (and (<= |ULTIMATE.start_main_~y~0#1| 74) (<= 74 |ULTIMATE.start_main_~x~0#1|) .cse0) (and (<= |ULTIMATE.start_main_~y~0#1| 85) (<= 85 |ULTIMATE.start_main_~x~0#1|) .cse0) (and (<= |ULTIMATE.start_main_~y~0#1| 71) (<= 71 |ULTIMATE.start_main_~x~0#1|) .cse0) (and (<= |ULTIMATE.start_main_~y~0#1| 52) (<= 52 |ULTIMATE.start_main_~x~0#1|) .cse0) (and (<= 51 |ULTIMATE.start_main_~x~0#1|) .cse0 (<= |ULTIMATE.start_main_~y~0#1| 51)) (and (<= 69 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 69) .cse0) (and (<= 92 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 92) .cse0) (and (<= |ULTIMATE.start_main_~y~0#1| 81) (<= 81 |ULTIMATE.start_main_~x~0#1|) .cse0) (and (<= 54 |ULTIMATE.start_main_~x~0#1|) .cse0 (<= |ULTIMATE.start_main_~y~0#1| 54)) (and (<= 57 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 57) .cse0) (and (<= 67 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 67) .cse0) (and (<= |ULTIMATE.start_main_~y~0#1| 68) (<= 68 |ULTIMATE.start_main_~x~0#1|) .cse0))) [2022-11-20 20:24:57,559 INFO L444 BasicCegarLoop]: Path program histogram: [11, 1, 1, 1, 1, 1, 1] [2022-11-20 20:24:57,561 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-20 20:24:57,584 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 08:24:57 BoogieIcfgContainer [2022-11-20 20:24:57,584 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-20 20:24:57,585 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 20:24:57,585 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 20:24:57,585 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 20:24:57,586 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:24:09" (3/4) ... [2022-11-20 20:24:57,589 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-20 20:24:57,598 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2022-11-20 20:24:57,598 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2022-11-20 20:24:57,599 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-11-20 20:24:57,599 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-20 20:24:57,631 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fa51509-98eb-4d9a-8e6a-6328ef29c93b/bin/utaipan-6cKwYrpEi9/witness.graphml [2022-11-20 20:24:57,631 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 20:24:57,632 INFO L158 Benchmark]: Toolchain (without parser) took 49319.16ms. Allocated memory was 155.2MB in the beginning and 813.7MB in the end (delta: 658.5MB). Free memory was 124.4MB in the beginning and 704.0MB in the end (delta: -579.6MB). Peak memory consumption was 77.7MB. Max. memory is 16.1GB. [2022-11-20 20:24:57,632 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 123.7MB. Free memory is still 92.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 20:24:57,633 INFO L158 Benchmark]: CACSL2BoogieTranslator took 337.16ms. Allocated memory is still 155.2MB. Free memory was 124.4MB in the beginning and 121.3MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-20 20:24:57,633 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.59ms. Allocated memory is still 155.2MB. Free memory was 121.3MB in the beginning and 119.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 20:24:57,634 INFO L158 Benchmark]: Boogie Preprocessor took 35.55ms. Allocated memory is still 155.2MB. Free memory was 119.2MB in the beginning and 118.8MB in the end (delta: 355.2kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 20:24:57,634 INFO L158 Benchmark]: RCFGBuilder took 305.23ms. Allocated memory is still 155.2MB. Free memory was 118.0MB in the beginning and 107.5MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-20 20:24:57,634 INFO L158 Benchmark]: TraceAbstraction took 48553.58ms. Allocated memory was 155.2MB in the beginning and 813.7MB in the end (delta: 658.5MB). Free memory was 106.6MB in the beginning and 706.1MB in the end (delta: -599.5MB). Peak memory consumption was 390.0MB. Max. memory is 16.1GB. [2022-11-20 20:24:57,635 INFO L158 Benchmark]: Witness Printer took 47.10ms. Allocated memory is still 813.7MB. Free memory was 706.1MB in the beginning and 704.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 20:24:57,637 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 123.7MB. Free memory is still 92.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 337.16ms. Allocated memory is still 155.2MB. Free memory was 124.4MB in the beginning and 121.3MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 31.59ms. Allocated memory is still 155.2MB. Free memory was 121.3MB in the beginning and 119.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 35.55ms. Allocated memory is still 155.2MB. Free memory was 119.2MB in the beginning and 118.8MB in the end (delta: 355.2kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 305.23ms. Allocated memory is still 155.2MB. Free memory was 118.0MB in the beginning and 107.5MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 48553.58ms. Allocated memory was 155.2MB in the beginning and 813.7MB in the end (delta: 658.5MB). Free memory was 106.6MB in the beginning and 706.1MB in the end (delta: -599.5MB). Peak memory consumption was 390.0MB. Max. memory is 16.1GB. * Witness Printer took 47.10ms. Allocated memory is still 813.7MB. Free memory was 706.1MB in the beginning and 704.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 29]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 29]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 31]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 31]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 32]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 32]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 48.5s, OverallIterations: 17, TraceHistogramMax: 145, PathProgramHistogramMax: 11, EmptinessCheckTime: 0.1s, AutomataDifference: 3.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 953 SdHoareTripleChecker+Valid, 1.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 953 mSDsluCounter, 1247 SdHoareTripleChecker+Invalid, 1.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1032 mSDsCounter, 198 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1919 IncrementalHoareTripleChecker+Invalid, 2117 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 198 mSolverCounterUnsat, 215 mSDtfsCounter, 1919 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 6468 GetRequests, 5827 SyntacticMatches, 48 SemanticMatches, 593 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10103 ImplicationChecksByTransitivity, 19.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=771occurred in iteration=16, InterpolantAutomatonStates: 425, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 17 MinimizatonAttempts, 5 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 1 LocationsWithAnnotation, 1 PreInvPairs, 102 NumberOfFragments, 521 HoareAnnotationTreeSize, 1 FomulaSimplifications, 605 FormulaSimplificationTreeSizeReduction, 0.3s HoareSimplificationTime, 1 FomulaSimplificationsInter, 637 FormulaSimplificationTreeSizeReductionInter, 1.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 32.3s InterpolantComputationTime, 5198 NumberOfCodeBlocks, 4746 NumberOfCodeBlocksAsserted, 114 NumberOfCheckSat, 6935 ConstructedInterpolants, 0 QuantifiedInterpolants, 18637 SizeOfPredicates, 0 NumberOfNonLiveVariables, 3753 ConjunctsInSsa, 252 ConjunctsInUnsatCore, 43 InterpolantComputations, 7 PerfectInterpolantSequences, 100245/203692 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: ((((((((((((((((((((((((((((((((((((((((((((((((((((y <= 65 && 65 <= x) && 50 <= y) || ((y <= 59 && 50 <= y) && 59 <= x)) || ((80 <= x && y <= 80) && 50 <= y)) || ((90 <= x && 50 <= y) && y <= 90)) || ((60 <= x && y <= 60) && 50 <= y)) || ((83 <= x && y <= 83) && 50 <= y)) || ((94 <= x && y <= 94) && 50 <= y)) || ((y <= 53 && 50 <= y) && 53 <= x)) || ((72 <= x && 50 <= y) && y <= 72)) || ((95 <= x && y <= 95) && 50 <= y)) || ((78 <= x && y <= 78) && 50 <= y)) || ((64 <= x && y <= 64) && 50 <= y)) || ((98 <= x && y < 2147483602) && 50 <= y)) || ((x == 0 && y <= 50) && 50 <= y)) || ((y <= 79 && 50 <= y) && 79 <= x)) || ((100 <= x && y < 2147483604) && 50 <= y)) || ((y <= 76 && 76 <= x) && 50 <= y)) || ((97 <= x && y < 2147483601) && 50 <= y)) || ((y <= 96 && 96 <= x) && 50 <= y)) || ((y <= 73 && 50 <= y) && 73 <= x)) || ((70 <= x && y <= 70) && 50 <= y)) || ((91 <= x && y <= 91) && 50 <= y)) || ((63 <= x && y <= 63) && 50 <= y)) || ((y <= 75 && 75 <= x) && 50 <= y)) || ((y <= 86 && 86 <= x) && 50 <= y)) || ((87 <= x && y <= 87) && 50 <= y)) || ((y <= 56 && 56 <= x) && 50 <= y)) || ((y <= 88 && 88 <= x) && 50 <= y)) || ((y <= 55 && 55 <= x) && 50 <= y)) || ((1 <= x && y <= 50) && 50 <= y)) || ((82 <= x && y <= 82) && 50 <= y)) || ((62 <= x && 50 <= y) && y <= 62)) || ((y <= 89 && 89 <= x) && 50 <= y)) || ((y <= 58 && 58 <= x) && 50 <= y)) || ((93 <= x && y <= 93) && 50 <= y)) || ((y <= 66 && 66 <= x) && 50 <= y)) || ((y <= 77 && 50 <= y) && 77 <= x)) || ((y <= 84 && 84 <= x) && 50 <= y)) || ((61 <= x && y <= 61) && 50 <= y)) || ((99 <= x && y < 2147483603) && 50 <= y)) || ((y <= 74 && 74 <= x) && 50 <= y)) || ((y <= 85 && 85 <= x) && 50 <= y)) || ((y <= 71 && 71 <= x) && 50 <= y)) || ((y <= 52 && 52 <= x) && 50 <= y)) || ((51 <= x && 50 <= y) && y <= 51)) || ((69 <= x && y <= 69) && 50 <= y)) || ((92 <= x && y <= 92) && 50 <= y)) || ((y <= 81 && 81 <= x) && 50 <= y)) || ((54 <= x && 50 <= y) && y <= 54)) || ((57 <= x && y <= 57) && 50 <= y)) || ((67 <= x && y <= 67) && 50 <= y)) || ((y <= 68 && 68 <= x) && 50 <= y) RESULT: Ultimate proved your program to be correct! [2022-11-20 20:24:57,661 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fa51509-98eb-4d9a-8e6a-6328ef29c93b/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE