./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-patterns/array1_pattern.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_397f3984-bc2a-4b28-a08b-b9cdfe1b7057/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_397f3984-bc2a-4b28-a08b-b9cdfe1b7057/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_397f3984-bc2a-4b28-a08b-b9cdfe1b7057/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_397f3984-bc2a-4b28-a08b-b9cdfe1b7057/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-patterns/array1_pattern.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_397f3984-bc2a-4b28-a08b-b9cdfe1b7057/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_397f3984-bc2a-4b28-a08b-b9cdfe1b7057/bin/utaipan-Q6hlc19bkW --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f9fbee177c3231db1a1e3277e649158ac81edd180968ad454e1d0751d0f1d4e9 --- 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-4e7fbc6 [2022-11-23 14:38:42,635 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 14:38:42,638 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 14:38:42,679 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 14:38:42,680 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 14:38:42,684 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 14:38:42,686 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 14:38:42,689 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 14:38:42,691 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 14:38:42,696 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 14:38:42,698 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 14:38:42,700 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 14:38:42,700 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 14:38:42,703 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 14:38:42,705 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 14:38:42,706 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 14:38:42,708 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 14:38:42,709 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 14:38:42,710 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 14:38:42,716 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 14:38:42,718 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 14:38:42,720 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 14:38:42,722 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 14:38:42,723 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 14:38:42,733 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 14:38:42,733 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 14:38:42,734 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 14:38:42,735 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 14:38:42,736 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 14:38:42,737 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 14:38:42,737 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 14:38:42,738 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 14:38:42,738 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 14:38:42,741 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 14:38:42,743 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 14:38:42,743 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 14:38:42,744 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 14:38:42,745 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 14:38:42,745 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 14:38:42,746 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 14:38:42,747 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 14:38:42,757 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_397f3984-bc2a-4b28-a08b-b9cdfe1b7057/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-23 14:38:42,789 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 14:38:42,789 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 14:38:42,789 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 14:38:42,790 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 14:38:42,790 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 14:38:42,791 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 14:38:42,791 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 14:38:42,791 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 14:38:42,791 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 14:38:42,792 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 14:38:42,792 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 14:38:42,792 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 14:38:42,792 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 14:38:42,793 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 14:38:42,793 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 14:38:42,793 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 14:38:42,793 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 14:38:42,794 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 14:38:42,794 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 14:38:42,795 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 14:38:42,795 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 14:38:42,795 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 14:38:42,795 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 14:38:42,796 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 14:38:42,796 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 14:38:42,796 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 14:38:42,796 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 14:38:42,796 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 14:38:42,797 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 14:38:42,797 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 14:38:42,797 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 14:38:42,797 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 14:38:42,798 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:38:42,798 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 14:38:42,798 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 14:38:42,798 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 14:38:42,799 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 14:38:42,799 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 14:38:42,799 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 14:38:42,799 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 14:38:42,800 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 14:38:42,800 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_397f3984-bc2a-4b28-a08b-b9cdfe1b7057/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_397f3984-bc2a-4b28-a08b-b9cdfe1b7057/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f9fbee177c3231db1a1e3277e649158ac81edd180968ad454e1d0751d0f1d4e9 [2022-11-23 14:38:43,034 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 14:38:43,099 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 14:38:43,104 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 14:38:43,105 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 14:38:43,106 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 14:38:43,107 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_397f3984-bc2a-4b28-a08b-b9cdfe1b7057/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/array-patterns/array1_pattern.c [2022-11-23 14:38:46,167 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 14:38:46,364 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 14:38:46,365 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_397f3984-bc2a-4b28-a08b-b9cdfe1b7057/sv-benchmarks/c/array-patterns/array1_pattern.c [2022-11-23 14:38:46,397 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_397f3984-bc2a-4b28-a08b-b9cdfe1b7057/bin/utaipan-Q6hlc19bkW/data/2b315b49a/561cc76df5b046969aa3f2604bfd90a2/FLAG614efbfa8 [2022-11-23 14:38:46,412 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_397f3984-bc2a-4b28-a08b-b9cdfe1b7057/bin/utaipan-Q6hlc19bkW/data/2b315b49a/561cc76df5b046969aa3f2604bfd90a2 [2022-11-23 14:38:46,414 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 14:38:46,416 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 14:38:46,417 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 14:38:46,418 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 14:38:46,421 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 14:38:46,422 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:38:46" (1/1) ... [2022-11-23 14:38:46,423 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26d58e7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:38:46, skipping insertion in model container [2022-11-23 14:38:46,424 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:38:46" (1/1) ... [2022-11-23 14:38:46,431 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 14:38:46,448 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 14:38:46,639 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_397f3984-bc2a-4b28-a08b-b9cdfe1b7057/sv-benchmarks/c/array-patterns/array1_pattern.c[1307,1320] [2022-11-23 14:38:46,658 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:38:46,667 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 14:38:46,679 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_397f3984-bc2a-4b28-a08b-b9cdfe1b7057/sv-benchmarks/c/array-patterns/array1_pattern.c[1307,1320] [2022-11-23 14:38:46,690 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:38:46,705 INFO L208 MainTranslator]: Completed translation [2022-11-23 14:38:46,705 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:38:46 WrapperNode [2022-11-23 14:38:46,705 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 14:38:46,707 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 14:38:46,707 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 14:38:46,707 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 14:38:46,715 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:38:46" (1/1) ... [2022-11-23 14:38:46,722 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:38:46" (1/1) ... [2022-11-23 14:38:46,741 INFO L138 Inliner]: procedures = 16, calls = 22, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 76 [2022-11-23 14:38:46,741 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 14:38:46,742 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 14:38:46,742 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 14:38:46,743 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 14:38:46,752 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:38:46" (1/1) ... [2022-11-23 14:38:46,753 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:38:46" (1/1) ... [2022-11-23 14:38:46,755 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:38:46" (1/1) ... [2022-11-23 14:38:46,755 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:38:46" (1/1) ... [2022-11-23 14:38:46,760 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:38:46" (1/1) ... [2022-11-23 14:38:46,764 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:38:46" (1/1) ... [2022-11-23 14:38:46,765 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:38:46" (1/1) ... [2022-11-23 14:38:46,766 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:38:46" (1/1) ... [2022-11-23 14:38:46,768 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 14:38:46,769 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 14:38:46,770 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 14:38:46,770 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 14:38:46,771 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:38:46" (1/1) ... [2022-11-23 14:38:46,777 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:38:46,790 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_397f3984-bc2a-4b28-a08b-b9cdfe1b7057/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:38:46,805 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_397f3984-bc2a-4b28-a08b-b9cdfe1b7057/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 14:38:46,815 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_397f3984-bc2a-4b28-a08b-b9cdfe1b7057/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 14:38:46,844 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 14:38:46,845 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-23 14:38:46,845 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-23 14:38:46,845 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 14:38:46,845 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 14:38:46,846 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-23 14:38:46,847 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 14:38:46,847 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 14:38:46,847 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-23 14:38:46,847 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 14:38:46,922 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 14:38:46,924 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 14:38:47,134 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 14:38:47,179 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 14:38:47,183 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-23 14:38:47,186 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:38:47 BoogieIcfgContainer [2022-11-23 14:38:47,198 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 14:38:47,201 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 14:38:47,202 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 14:38:47,247 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 14:38:47,248 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:38:46" (1/3) ... [2022-11-23 14:38:47,248 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8e8c592 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:38:47, skipping insertion in model container [2022-11-23 14:38:47,249 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:38:46" (2/3) ... [2022-11-23 14:38:47,249 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8e8c592 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:38:47, skipping insertion in model container [2022-11-23 14:38:47,249 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:38:47" (3/3) ... [2022-11-23 14:38:47,251 INFO L112 eAbstractionObserver]: Analyzing ICFG array1_pattern.c [2022-11-23 14:38:47,282 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 14:38:47,283 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 14:38:47,394 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 14:38:47,402 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;@9afaff5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 14:38:47,403 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 14:38:47,407 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 12 states have (on average 1.5) internal successors, (18), 13 states have internal predecessors, (18), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-23 14:38:47,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-23 14:38:47,415 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:38:47,416 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:38:47,417 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:38:47,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:38:47,422 INFO L85 PathProgramCache]: Analyzing trace with hash -348000308, now seen corresponding path program 1 times [2022-11-23 14:38:47,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:38:47,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607906969] [2022-11-23 14:38:47,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:38:47,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:38:47,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:38:47,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:38:47,681 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:38:47,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607906969] [2022-11-23 14:38:47,683 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607906969] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:38:47,683 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:38:47,683 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 14:38:47,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465385161] [2022-11-23 14:38:47,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:38:47,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-23 14:38:47,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:38:47,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-23 14:38:47,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-23 14:38:47,743 INFO L87 Difference]: Start difference. First operand has 17 states, 12 states have (on average 1.5) internal successors, (18), 13 states have internal predecessors, (18), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-23 14:38:47,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:38:47,805 INFO L93 Difference]: Finished difference Result 24 states and 30 transitions. [2022-11-23 14:38:47,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-23 14:38:47,808 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2022-11-23 14:38:47,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:38:47,820 INFO L225 Difference]: With dead ends: 24 [2022-11-23 14:38:47,820 INFO L226 Difference]: Without dead ends: 15 [2022-11-23 14:38:47,823 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-23 14:38:47,829 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 14:38:47,831 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 13 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 14:38:47,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-11-23 14:38:47,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2022-11-23 14:38:47,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-23 14:38:47,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 18 transitions. [2022-11-23 14:38:47,870 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 18 transitions. Word has length 11 [2022-11-23 14:38:47,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:38:47,872 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 18 transitions. [2022-11-23 14:38:47,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-23 14:38:47,873 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 18 transitions. [2022-11-23 14:38:47,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-23 14:38:47,875 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:38:47,875 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:38:47,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 14:38:47,876 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:38:47,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:38:47,877 INFO L85 PathProgramCache]: Analyzing trace with hash 1400754714, now seen corresponding path program 1 times [2022-11-23 14:38:47,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:38:47,877 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070579829] [2022-11-23 14:38:47,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:38:47,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:38:47,947 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 14:38:47,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [459592880] [2022-11-23 14:38:47,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:38:47,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:38:47,953 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_397f3984-bc2a-4b28-a08b-b9cdfe1b7057/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:38:47,959 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_397f3984-bc2a-4b28-a08b-b9cdfe1b7057/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:38:47,971 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_397f3984-bc2a-4b28-a08b-b9cdfe1b7057/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 14:38:48,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:38:48,082 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-23 14:38:48,089 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:38:48,173 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-23 14:38:48,173 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:38:48,173 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:38:48,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070579829] [2022-11-23 14:38:48,175 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 14:38:48,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [459592880] [2022-11-23 14:38:48,181 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [459592880] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:38:48,181 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:38:48,182 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 14:38:48,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507568415] [2022-11-23 14:38:48,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:38:48,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 14:38:48,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:38:48,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 14:38:48,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 14:38:48,192 INFO L87 Difference]: Start difference. First operand 15 states and 18 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-23 14:38:48,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:38:48,241 INFO L93 Difference]: Finished difference Result 19 states and 22 transitions. [2022-11-23 14:38:48,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 14:38:48,243 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 16 [2022-11-23 14:38:48,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:38:48,250 INFO L225 Difference]: With dead ends: 19 [2022-11-23 14:38:48,250 INFO L226 Difference]: Without dead ends: 16 [2022-11-23 14:38:48,251 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:38:48,252 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 3 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 14:38:48,253 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 28 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 14:38:48,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2022-11-23 14:38:48,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2022-11-23 14:38:48,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-23 14:38:48,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 19 transitions. [2022-11-23 14:38:48,266 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 19 transitions. Word has length 16 [2022-11-23 14:38:48,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:38:48,267 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 19 transitions. [2022-11-23 14:38:48,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-23 14:38:48,268 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 19 transitions. [2022-11-23 14:38:48,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-23 14:38:48,270 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:38:48,270 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:38:48,279 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_397f3984-bc2a-4b28-a08b-b9cdfe1b7057/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-23 14:38:48,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_397f3984-bc2a-4b28-a08b-b9cdfe1b7057/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:38:48,471 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:38:48,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:38:48,472 INFO L85 PathProgramCache]: Analyzing trace with hash 473487722, now seen corresponding path program 1 times [2022-11-23 14:38:48,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:38:48,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723655542] [2022-11-23 14:38:48,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:38:48,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:38:48,503 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 14:38:48,506 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [731132508] [2022-11-23 14:38:48,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:38:48,506 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:38:48,508 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_397f3984-bc2a-4b28-a08b-b9cdfe1b7057/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:38:48,510 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_397f3984-bc2a-4b28-a08b-b9cdfe1b7057/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:38:48,531 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_397f3984-bc2a-4b28-a08b-b9cdfe1b7057/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-23 14:38:48,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:38:48,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-23 14:38:48,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:38:48,681 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:38:48,682 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:38:48,682 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:38:48,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723655542] [2022-11-23 14:38:48,682 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 14:38:48,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [731132508] [2022-11-23 14:38:48,683 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [731132508] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:38:48,683 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:38:48,683 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 14:38:48,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697707576] [2022-11-23 14:38:48,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:38:48,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 14:38:48,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:38:48,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 14:38:48,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:38:48,685 INFO L87 Difference]: Start difference. First operand 16 states and 19 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-23 14:38:48,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:38:48,771 INFO L93 Difference]: Finished difference Result 29 states and 34 transitions. [2022-11-23 14:38:48,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 14:38:48,772 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 17 [2022-11-23 14:38:48,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:38:48,773 INFO L225 Difference]: With dead ends: 29 [2022-11-23 14:38:48,773 INFO L226 Difference]: Without dead ends: 17 [2022-11-23 14:38:48,773 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-23 14:38:48,774 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:38:48,775 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 39 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 14:38:48,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-11-23 14:38:48,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2022-11-23 14:38:48,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-23 14:38:48,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 20 transitions. [2022-11-23 14:38:48,781 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 20 transitions. Word has length 17 [2022-11-23 14:38:48,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:38:48,782 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 20 transitions. [2022-11-23 14:38:48,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-23 14:38:48,782 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 20 transitions. [2022-11-23 14:38:48,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-23 14:38:48,783 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:38:48,783 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:38:48,797 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_397f3984-bc2a-4b28-a08b-b9cdfe1b7057/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-23 14:38:48,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_397f3984-bc2a-4b28-a08b-b9cdfe1b7057/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:38:48,989 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:38:48,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:38:48,990 INFO L85 PathProgramCache]: Analyzing trace with hash 199414858, now seen corresponding path program 1 times [2022-11-23 14:38:48,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:38:48,990 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331778236] [2022-11-23 14:38:48,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:38:48,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:38:49,024 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 14:38:49,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1002953430] [2022-11-23 14:38:49,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:38:49,025 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:38:49,025 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_397f3984-bc2a-4b28-a08b-b9cdfe1b7057/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:38:49,026 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_397f3984-bc2a-4b28-a08b-b9cdfe1b7057/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:38:49,033 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_397f3984-bc2a-4b28-a08b-b9cdfe1b7057/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-23 14:38:49,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:38:49,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 53 conjunts are in the unsatisfiable core [2022-11-23 14:38:49,209 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:38:49,329 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-23 14:38:49,388 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2022-11-23 14:38:49,394 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-23 14:38:49,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:38:49,776 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 93 treesize of output 92 [2022-11-23 14:38:49,788 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 84 [2022-11-23 14:38:49,799 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 131 [2022-11-23 14:38:49,813 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:38:49,816 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 15 [2022-11-23 14:38:49,897 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 5 [2022-11-23 14:38:50,126 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:38:50,133 INFO L321 Elim1Store]: treesize reduction 12, result has 20.0 percent of original size [2022-11-23 14:38:50,134 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 17 [2022-11-23 14:38:50,169 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:38:50,169 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:38:50,367 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse6 (mod (+ c_~ARR_SIZE~0 4294967295 (* 4294967295 |c_ULTIMATE.start_main_~index~0#1|)) 4294967296))) (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base|) (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| (* |c_ULTIMATE.start_main_~index~0#1| 4)) (* |c_ULTIMATE.start_main_~index~0#1| |c_ULTIMATE.start_main_~num~0#1| |c_ULTIMATE.start_main_~num~0#1|)))) (.cse3 (* 4 .cse6)) (.cse4 (* |c_ULTIMATE.start_main_~index~0#1| |c_ULTIMATE.start_main_~num~0#1|)) (.cse0 (<= .cse6 2147483647))) (and (or .cse0 (forall ((v_ArrVal_94 (Array Int Int)) (|ULTIMATE.start_main_~#array2~0#1.offset| Int)) (= (let ((.cse2 (store (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| v_ArrVal_94) |c_ULTIMATE.start_main_~#array2~0#1.base|) (+ |ULTIMATE.start_main_~#array2~0#1.offset| (- 17179869184) .cse3) .cse4))) (+ (select (select (store .cse1 |c_ULTIMATE.start_main_~#array2~0#1.base| .cse2) |c_ULTIMATE.start_main_~#array1~0#1.base|) |c_ULTIMATE.start_main_~#array1~0#1.offset|) |c_ULTIMATE.start_main_~sum~0#1| (select .cse2 |ULTIMATE.start_main_~#array2~0#1.offset|))) 0))) (or (forall ((v_ArrVal_94 (Array Int Int)) (|ULTIMATE.start_main_~#array2~0#1.offset| Int)) (= (let ((.cse5 (store (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| v_ArrVal_94) |c_ULTIMATE.start_main_~#array2~0#1.base|) (+ |ULTIMATE.start_main_~#array2~0#1.offset| .cse3) .cse4))) (+ (select .cse5 |ULTIMATE.start_main_~#array2~0#1.offset|) |c_ULTIMATE.start_main_~sum~0#1| (select (select (store .cse1 |c_ULTIMATE.start_main_~#array2~0#1.base| .cse5) |c_ULTIMATE.start_main_~#array1~0#1.base|) |c_ULTIMATE.start_main_~#array1~0#1.offset|))) 0)) (not .cse0))))) is different from false [2022-11-23 14:38:52,623 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:38:52,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331778236] [2022-11-23 14:38:52,623 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 14:38:52,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1002953430] [2022-11-23 14:38:52,623 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1002953430] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 14:38:52,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1238017084] [2022-11-23 14:38:52,645 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-11-23 14:38:52,645 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 14:38:52,649 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 14:38:52,658 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 14:38:52,658 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 14:38:52,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:38:52,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:38:52,860 INFO L321 Elim1Store]: treesize reduction 80, result has 29.8 percent of original size [2022-11-23 14:38:52,860 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 57 [2022-11-23 14:38:52,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:38:52,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:38:52,989 INFO L321 Elim1Store]: treesize reduction 98, result has 24.6 percent of original size [2022-11-23 14:38:52,990 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 44 treesize of output 69 [2022-11-23 14:38:53,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:38:53,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:38:53,052 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 35 [2022-11-23 14:38:53,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:38:53,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:38:53,196 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:38:53,197 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:38:53,198 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:38:53,300 INFO L321 Elim1Store]: treesize reduction 235, result has 16.4 percent of original size [2022-11-23 14:38:53,301 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 355 treesize of output 353 [2022-11-23 14:38:53,625 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:38:53,638 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-23 14:38:53,639 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 25 [2022-11-23 14:38:53,749 INFO L321 Elim1Store]: treesize reduction 59, result has 49.6 percent of original size [2022-11-23 14:38:53,750 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 77 treesize of output 100 [2022-11-23 14:38:53,887 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 70 for LOIs [2022-11-23 14:38:53,915 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 14:38:55,893 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '396#(and (<= 0 |ULTIMATE.start_main_~count~0#1|) (<= 0 (+ 32768 |ULTIMATE.start_main_~index~0#1|)) (<= |ULTIMATE.start_main_~index~0#1| 32767) (= |ULTIMATE.start_main_~#array2~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 (+ ~ARR_SIZE~0 32768)) (<= 0 |ULTIMATE.start_main_~#array1~0#1.base|) (<= (+ |ULTIMATE.start_main_~num~0#1| 1) 0) (<= 0 (+ |ULTIMATE.start_main_~num~0#1| 1)) (not (< |ULTIMATE.start_main_~count~0#1| ~ARR_SIZE~0)) (= |ULTIMATE.start_main_~#array1~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (= |ULTIMATE.start_main_~sum~0#1| 0) 1 0)) (<= 0 |ULTIMATE.start_main_~#array2~0#1.base|) (<= ~ARR_SIZE~0 32767) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~temp~0#1|) (<= |ULTIMATE.start_main_~temp~0#1| 0) (= |#NULL.base| 0))' at error location [2022-11-23 14:38:55,893 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 14:38:55,893 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-23 14:38:55,894 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2022-11-23 14:38:55,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419498731] [2022-11-23 14:38:55,894 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-23 14:38:55,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-23 14:38:55,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:38:55,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-23 14:38:55,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=909, Unknown=1, NotChecked=62, Total=1122 [2022-11-23 14:38:55,896 INFO L87 Difference]: Start difference. First operand 17 states and 20 transitions. Second operand has 16 states, 13 states have (on average 1.0769230769230769) internal successors, (14), 12 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-23 14:38:56,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:38:56,960 INFO L93 Difference]: Finished difference Result 40 states and 45 transitions. [2022-11-23 14:38:56,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-23 14:38:56,961 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 13 states have (on average 1.0769230769230769) internal successors, (14), 12 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 18 [2022-11-23 14:38:56,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:38:56,962 INFO L225 Difference]: With dead ends: 40 [2022-11-23 14:38:56,962 INFO L226 Difference]: Without dead ends: 37 [2022-11-23 14:38:56,963 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 421 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=279, Invalid=1446, Unknown=1, NotChecked=80, Total=1806 [2022-11-23 14:38:56,964 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 70 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-23 14:38:56,965 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 47 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-23 14:38:56,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2022-11-23 14:38:56,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 28. [2022-11-23 14:38:56,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 21 states have internal predecessors, (26), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-23 14:38:56,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2022-11-23 14:38:56,976 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 18 [2022-11-23 14:38:56,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:38:56,977 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2022-11-23 14:38:56,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 13 states have (on average 1.0769230769230769) internal successors, (14), 12 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-23 14:38:56,977 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2022-11-23 14:38:56,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-23 14:38:56,978 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:38:56,978 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:38:56,986 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_397f3984-bc2a-4b28-a08b-b9cdfe1b7057/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-23 14:38:57,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_397f3984-bc2a-4b28-a08b-b9cdfe1b7057/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:38:57,185 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:38:57,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:38:57,185 INFO L85 PathProgramCache]: Analyzing trace with hash 1886657850, now seen corresponding path program 2 times [2022-11-23 14:38:57,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:38:57,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605046227] [2022-11-23 14:38:57,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:38:57,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:38:57,208 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 14:38:57,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [551138375] [2022-11-23 14:38:57,209 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 14:38:57,209 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:38:57,209 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_397f3984-bc2a-4b28-a08b-b9cdfe1b7057/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:38:57,210 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_397f3984-bc2a-4b28-a08b-b9cdfe1b7057/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:38:57,229 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_397f3984-bc2a-4b28-a08b-b9cdfe1b7057/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-23 14:38:57,299 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-23 14:38:57,299 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 14:38:57,301 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-23 14:38:57,302 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:38:57,371 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:38:57,371 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:38:57,419 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-23 14:38:57,420 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:38:57,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605046227] [2022-11-23 14:38:57,420 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 14:38:57,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [551138375] [2022-11-23 14:38:57,420 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [551138375] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:38:57,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [231424233] [2022-11-23 14:38:57,422 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-11-23 14:38:57,422 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 14:38:57,423 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 14:38:57,423 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 14:38:57,423 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 14:38:57,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:38:57,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:38:57,555 INFO L321 Elim1Store]: treesize reduction 98, result has 24.6 percent of original size [2022-11-23 14:38:57,555 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 44 treesize of output 69 [2022-11-23 14:38:57,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:38:57,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:38:57,576 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 12 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 43 [2022-11-23 14:38:57,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:38:57,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:38:57,614 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 35 [2022-11-23 14:38:57,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:38:57,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:38:57,733 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:38:57,734 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:38:57,735 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:38:57,834 INFO L321 Elim1Store]: treesize reduction 235, result has 16.4 percent of original size [2022-11-23 14:38:57,835 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 355 treesize of output 353 [2022-11-23 14:38:58,239 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:38:58,251 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-23 14:38:58,252 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 25 [2022-11-23 14:38:58,353 INFO L321 Elim1Store]: treesize reduction 59, result has 49.6 percent of original size [2022-11-23 14:38:58,354 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 77 treesize of output 100 [2022-11-23 14:38:58,483 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 70 for LOIs [2022-11-23 14:38:58,511 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 14:39:00,059 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '645#(and (<= 0 |ULTIMATE.start_main_~count~0#1|) (<= 0 (+ 32768 |ULTIMATE.start_main_~index~0#1|)) (<= |ULTIMATE.start_main_~index~0#1| 32767) (= |ULTIMATE.start_main_~#array2~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 (+ ~ARR_SIZE~0 32768)) (<= 0 |ULTIMATE.start_main_~#array1~0#1.base|) (<= (+ |ULTIMATE.start_main_~num~0#1| 1) 0) (<= 0 (+ |ULTIMATE.start_main_~num~0#1| 1)) (not (< |ULTIMATE.start_main_~count~0#1| ~ARR_SIZE~0)) (= |ULTIMATE.start_main_~#array1~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (= |ULTIMATE.start_main_~sum~0#1| 0) 1 0)) (<= 0 |ULTIMATE.start_main_~#array2~0#1.base|) (<= ~ARR_SIZE~0 32767) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~temp~0#1|) (<= |ULTIMATE.start_main_~temp~0#1| 0) (= |#NULL.base| 0))' at error location [2022-11-23 14:39:00,060 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 14:39:00,060 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-23 14:39:00,060 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2022-11-23 14:39:00,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403486954] [2022-11-23 14:39:00,060 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-23 14:39:00,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-23 14:39:00,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:39:00,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-23 14:39:00,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=378, Unknown=0, NotChecked=0, Total=462 [2022-11-23 14:39:00,062 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand has 9 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-23 14:39:00,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:39:00,221 INFO L93 Difference]: Finished difference Result 37 states and 41 transitions. [2022-11-23 14:39:00,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-23 14:39:00,224 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 19 [2022-11-23 14:39:00,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:39:00,225 INFO L225 Difference]: With dead ends: 37 [2022-11-23 14:39:00,225 INFO L226 Difference]: Without dead ends: 24 [2022-11-23 14:39:00,226 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 32 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=106, Invalid=494, Unknown=0, NotChecked=0, Total=600 [2022-11-23 14:39:00,226 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 25 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:39:00,227 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 51 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 14:39:00,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-11-23 14:39:00,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 20. [2022-11-23 14:39:00,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 15 states have (on average 1.2) internal successors, (18), 15 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-23 14:39:00,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2022-11-23 14:39:00,233 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 19 [2022-11-23 14:39:00,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:39:00,233 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2022-11-23 14:39:00,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-23 14:39:00,234 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2022-11-23 14:39:00,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-23 14:39:00,234 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:39:00,234 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:39:00,246 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_397f3984-bc2a-4b28-a08b-b9cdfe1b7057/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-23 14:39:00,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_397f3984-bc2a-4b28-a08b-b9cdfe1b7057/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:39:00,441 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:39:00,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:39:00,442 INFO L85 PathProgramCache]: Analyzing trace with hash 293090666, now seen corresponding path program 3 times [2022-11-23 14:39:00,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:39:00,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244557883] [2022-11-23 14:39:00,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:39:00,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:39:00,465 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 14:39:00,465 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [277659330] [2022-11-23 14:39:00,465 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-23 14:39:00,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:39:00,466 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_397f3984-bc2a-4b28-a08b-b9cdfe1b7057/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:39:00,467 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_397f3984-bc2a-4b28-a08b-b9cdfe1b7057/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:39:00,479 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_397f3984-bc2a-4b28-a08b-b9cdfe1b7057/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-23 14:39:00,552 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-23 14:39:00,552 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 14:39:00,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-23 14:39:00,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:39:00,610 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:39:00,610 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:39:00,660 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-23 14:39:00,660 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:39:00,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244557883] [2022-11-23 14:39:00,660 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 14:39:00,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [277659330] [2022-11-23 14:39:00,661 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [277659330] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:39:00,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [891017189] [2022-11-23 14:39:00,669 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-11-23 14:39:00,670 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 14:39:00,670 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 14:39:00,670 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 14:39:00,671 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 14:39:00,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:39:00,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:39:00,810 INFO L321 Elim1Store]: treesize reduction 98, result has 24.6 percent of original size [2022-11-23 14:39:00,810 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 44 treesize of output 69 [2022-11-23 14:39:00,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:39:00,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:39:00,831 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 12 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 43 [2022-11-23 14:39:00,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:39:00,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:39:00,870 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 35 [2022-11-23 14:39:00,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:39:00,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:39:00,979 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:39:00,980 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:39:00,981 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:39:01,072 INFO L321 Elim1Store]: treesize reduction 235, result has 16.4 percent of original size [2022-11-23 14:39:01,072 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 355 treesize of output 353 [2022-11-23 14:39:01,301 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:39:01,313 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-23 14:39:01,313 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 25 [2022-11-23 14:39:01,423 INFO L321 Elim1Store]: treesize reduction 59, result has 49.6 percent of original size [2022-11-23 14:39:01,423 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 77 treesize of output 100 [2022-11-23 14:39:01,494 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 70 for LOIs [2022-11-23 14:39:01,519 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 14:39:02,862 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '865#(and (<= 0 |ULTIMATE.start_main_~count~0#1|) (<= 0 (+ 32768 |ULTIMATE.start_main_~index~0#1|)) (<= |ULTIMATE.start_main_~index~0#1| 32767) (= |ULTIMATE.start_main_~temp~0#1| 0) (= |ULTIMATE.start_main_~#array2~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 (+ ~ARR_SIZE~0 32768)) (<= 0 |ULTIMATE.start_main_~#array1~0#1.base|) (<= (+ |ULTIMATE.start_main_~num~0#1| 1) 0) (<= 0 (+ |ULTIMATE.start_main_~num~0#1| 1)) (not (< |ULTIMATE.start_main_~count~0#1| ~ARR_SIZE~0)) (= |ULTIMATE.start_main_~#array1~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (= |ULTIMATE.start_main_~sum~0#1| 0) 1 0)) (<= 0 |ULTIMATE.start_main_~#array2~0#1.base|) (<= ~ARR_SIZE~0 32767) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-23 14:39:02,862 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 14:39:02,862 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-23 14:39:02,862 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2022-11-23 14:39:02,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333252737] [2022-11-23 14:39:02,862 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-23 14:39:02,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-23 14:39:02,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:39:02,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-23 14:39:02,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=380, Unknown=0, NotChecked=0, Total=462 [2022-11-23 14:39:02,864 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand has 9 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-23 14:39:02,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:39:02,971 INFO L93 Difference]: Finished difference Result 24 states and 26 transitions. [2022-11-23 14:39:02,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-23 14:39:02,972 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 19 [2022-11-23 14:39:02,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:39:02,972 INFO L225 Difference]: With dead ends: 24 [2022-11-23 14:39:02,973 INFO L226 Difference]: Without dead ends: 21 [2022-11-23 14:39:02,973 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 32 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=103, Invalid=497, Unknown=0, NotChecked=0, Total=600 [2022-11-23 14:39:02,974 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 24 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:39:02,974 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 22 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 14:39:02,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2022-11-23 14:39:02,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2022-11-23 14:39:02,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 16 states have (on average 1.1875) internal successors, (19), 16 states have internal predecessors, (19), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-23 14:39:02,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2022-11-23 14:39:02,981 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 19 [2022-11-23 14:39:02,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:39:02,981 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2022-11-23 14:39:02,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-23 14:39:02,981 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2022-11-23 14:39:02,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-23 14:39:02,982 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:39:02,982 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:39:02,996 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_397f3984-bc2a-4b28-a08b-b9cdfe1b7057/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-23 14:39:03,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_397f3984-bc2a-4b28-a08b-b9cdfe1b7057/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:39:03,197 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:39:03,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:39:03,197 INFO L85 PathProgramCache]: Analyzing trace with hash 495640602, now seen corresponding path program 4 times [2022-11-23 14:39:03,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:39:03,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737521283] [2022-11-23 14:39:03,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:39:03,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:39:03,231 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 14:39:03,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1333557061] [2022-11-23 14:39:03,232 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-23 14:39:03,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:39:03,232 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_397f3984-bc2a-4b28-a08b-b9cdfe1b7057/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:39:03,233 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_397f3984-bc2a-4b28-a08b-b9cdfe1b7057/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:39:03,258 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_397f3984-bc2a-4b28-a08b-b9cdfe1b7057/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-23 14:39:03,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:39:03,401 WARN L261 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 76 conjunts are in the unsatisfiable core [2022-11-23 14:39:03,405 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:39:03,454 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-23 14:39:03,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:39:03,512 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 33 [2022-11-23 14:39:03,521 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 12 [2022-11-23 14:39:03,525 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 28 [2022-11-23 14:39:03,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:39:03,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:39:03,594 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 39 [2022-11-23 14:39:04,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:39:04,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:39:04,188 INFO L321 Elim1Store]: treesize reduction 36, result has 39.0 percent of original size [2022-11-23 14:39:04,188 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 142 treesize of output 135 [2022-11-23 14:39:04,198 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 123 treesize of output 113 [2022-11-23 14:39:04,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:39:04,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:39:04,229 INFO L321 Elim1Store]: treesize reduction 82, result has 1.2 percent of original size [2022-11-23 14:39:04,230 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 80 treesize of output 149 [2022-11-23 14:39:05,257 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 232 treesize of output 204 [2022-11-23 14:39:05,363 INFO L321 Elim1Store]: treesize reduction 23, result has 73.3 percent of original size [2022-11-23 14:39:05,364 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 215 treesize of output 246 [2022-11-23 14:39:05,402 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 14:39:05,403 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 239 treesize of output 233 [2022-11-23 14:39:05,789 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:39:05,790 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:39:26,494 INFO L321 Elim1Store]: treesize reduction 17, result has 66.0 percent of original size [2022-11-23 14:39:26,494 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 3546 treesize of output 2330 [2022-11-23 14:39:26,657 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 14:39:26,657 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 1148 treesize of output 823 [2022-11-23 14:39:26,933 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 14:39:26,934 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 10320 treesize of output 10156 [2022-11-23 14:39:27,024 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:39:27,041 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:39:27,047 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:39:27,248 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:39:27,749 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:39:27,780 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:39:29,394 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 14:39:29,397 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 216748 treesize of output 199146 [2022-11-23 14:39:31,854 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:39:31,856 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:39:31,859 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:39:31,861 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:39:31,908 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 64