./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-fpi/s3iff.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c5080c-b942-49af-8a12-51f9141def7b/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c5080c-b942-49af-8a12-51f9141def7b/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c5080c-b942-49af-8a12-51f9141def7b/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c5080c-b942-49af-8a12-51f9141def7b/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-fpi/s3iff.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c5080c-b942-49af-8a12-51f9141def7b/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c5080c-b942-49af-8a12-51f9141def7b/bin/utaipan-gh47qXpMRh --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 b56a60c804a92437263513baa7bf1eed2ace53771b0d034fa5a91f323be2ca59 --- 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-2329fc7 [2022-12-14 10:07:31,511 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 10:07:31,512 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 10:07:31,537 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 10:07:31,538 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 10:07:31,539 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 10:07:31,541 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 10:07:31,544 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 10:07:31,546 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 10:07:31,548 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 10:07:31,549 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 10:07:31,551 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 10:07:31,551 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 10:07:31,553 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 10:07:31,554 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 10:07:31,556 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 10:07:31,557 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 10:07:31,559 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 10:07:31,561 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 10:07:31,564 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 10:07:31,567 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 10:07:31,568 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 10:07:31,569 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 10:07:31,570 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 10:07:31,573 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 10:07:31,573 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 10:07:31,574 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 10:07:31,575 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 10:07:31,575 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 10:07:31,576 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 10:07:31,576 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 10:07:31,577 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 10:07:31,578 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 10:07:31,579 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 10:07:31,579 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 10:07:31,580 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 10:07:31,580 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 10:07:31,580 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 10:07:31,581 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 10:07:31,581 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 10:07:31,582 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 10:07:31,583 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c5080c-b942-49af-8a12-51f9141def7b/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 10:07:31,606 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 10:07:31,606 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 10:07:31,606 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 10:07:31,606 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 10:07:31,607 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 10:07:31,607 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 10:07:31,607 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 10:07:31,608 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 10:07:31,608 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 10:07:31,608 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 10:07:31,608 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 10:07:31,608 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 10:07:31,609 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 10:07:31,609 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 10:07:31,609 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 10:07:31,609 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 10:07:31,609 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 10:07:31,610 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 10:07:31,610 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 10:07:31,610 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 10:07:31,611 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 10:07:31,611 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 10:07:31,611 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 10:07:31,611 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 10:07:31,611 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 10:07:31,611 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 10:07:31,612 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 10:07:31,612 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 10:07:31,612 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 10:07:31,612 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 10:07:31,612 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 10:07:31,613 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 10:07:31,613 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 10:07:31,613 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 10:07:31,613 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 10:07:31,613 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 10:07:31,614 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 10:07:31,614 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 10:07:31,614 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 10:07:31,614 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 10:07:31,614 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 10:07:31,614 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_a4c5080c-b942-49af-8a12-51f9141def7b/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c5080c-b942-49af-8a12-51f9141def7b/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b56a60c804a92437263513baa7bf1eed2ace53771b0d034fa5a91f323be2ca59 [2022-12-14 10:07:31,801 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 10:07:31,817 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 10:07:31,819 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 10:07:31,820 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 10:07:31,820 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 10:07:31,821 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c5080c-b942-49af-8a12-51f9141def7b/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/array-fpi/s3iff.c [2022-12-14 10:07:34,370 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 10:07:34,538 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 10:07:34,539 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c5080c-b942-49af-8a12-51f9141def7b/sv-benchmarks/c/array-fpi/s3iff.c [2022-12-14 10:07:34,544 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c5080c-b942-49af-8a12-51f9141def7b/bin/utaipan-gh47qXpMRh/data/10a0d3b00/ee4e7f96415a4eb3b8ab9b0917da8686/FLAGf7cf39b91 [2022-12-14 10:07:34,969 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c5080c-b942-49af-8a12-51f9141def7b/bin/utaipan-gh47qXpMRh/data/10a0d3b00/ee4e7f96415a4eb3b8ab9b0917da8686 [2022-12-14 10:07:34,972 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 10:07:34,974 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 10:07:34,976 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 10:07:34,976 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 10:07:34,980 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 10:07:34,981 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 10:07:34" (1/1) ... [2022-12-14 10:07:34,982 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4fcd1c42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:07:34, skipping insertion in model container [2022-12-14 10:07:34,982 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 10:07:34" (1/1) ... [2022-12-14 10:07:34,987 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 10:07:34,997 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 10:07:35,092 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_a4c5080c-b942-49af-8a12-51f9141def7b/sv-benchmarks/c/array-fpi/s3iff.c[588,601] [2022-12-14 10:07:35,104 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 10:07:35,110 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 10:07:35,118 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_a4c5080c-b942-49af-8a12-51f9141def7b/sv-benchmarks/c/array-fpi/s3iff.c[588,601] [2022-12-14 10:07:35,123 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 10:07:35,132 INFO L208 MainTranslator]: Completed translation [2022-12-14 10:07:35,133 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:07:35 WrapperNode [2022-12-14 10:07:35,133 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 10:07:35,133 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 10:07:35,134 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 10:07:35,134 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 10:07:35,138 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:07:35" (1/1) ... [2022-12-14 10:07:35,143 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:07:35" (1/1) ... [2022-12-14 10:07:35,156 INFO L138 Inliner]: procedures = 17, calls = 31, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 80 [2022-12-14 10:07:35,157 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 10:07:35,157 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 10:07:35,157 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 10:07:35,157 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 10:07:35,164 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:07:35" (1/1) ... [2022-12-14 10:07:35,164 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:07:35" (1/1) ... [2022-12-14 10:07:35,166 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:07:35" (1/1) ... [2022-12-14 10:07:35,166 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:07:35" (1/1) ... [2022-12-14 10:07:35,169 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:07:35" (1/1) ... [2022-12-14 10:07:35,171 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:07:35" (1/1) ... [2022-12-14 10:07:35,172 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:07:35" (1/1) ... [2022-12-14 10:07:35,173 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:07:35" (1/1) ... [2022-12-14 10:07:35,174 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 10:07:35,175 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 10:07:35,175 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 10:07:35,175 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 10:07:35,176 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:07:35" (1/1) ... [2022-12-14 10:07:35,180 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 10:07:35,187 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c5080c-b942-49af-8a12-51f9141def7b/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:07:35,196 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c5080c-b942-49af-8a12-51f9141def7b/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 10:07:35,198 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c5080c-b942-49af-8a12-51f9141def7b/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 10:07:35,226 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 10:07:35,226 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 10:07:35,226 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 10:07:35,227 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-14 10:07:35,227 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-14 10:07:35,227 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 10:07:35,227 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 10:07:35,227 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-14 10:07:35,227 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 10:07:35,286 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 10:07:35,287 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 10:07:35,408 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 10:07:35,461 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 10:07:35,462 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-12-14 10:07:35,464 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 10:07:35 BoogieIcfgContainer [2022-12-14 10:07:35,464 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 10:07:35,467 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 10:07:35,467 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 10:07:35,470 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 10:07:35,471 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 10:07:34" (1/3) ... [2022-12-14 10:07:35,471 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27936d22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 10:07:35, skipping insertion in model container [2022-12-14 10:07:35,471 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:07:35" (2/3) ... [2022-12-14 10:07:35,472 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27936d22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 10:07:35, skipping insertion in model container [2022-12-14 10:07:35,472 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 10:07:35" (3/3) ... [2022-12-14 10:07:35,473 INFO L112 eAbstractionObserver]: Analyzing ICFG s3iff.c [2022-12-14 10:07:35,492 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 10:07:35,493 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 10:07:35,543 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 10:07:35,550 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;@312d1802, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 10:07:35,550 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 10:07:35,555 INFO L276 IsEmpty]: Start isEmpty. Operand has 10 states, 8 states have (on average 1.625) internal successors, (13), 9 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:07:35,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-12-14 10:07:35,561 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:07:35,561 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-14 10:07:35,562 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:07:35,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:07:35,568 INFO L85 PathProgramCache]: Analyzing trace with hash -1569409207, now seen corresponding path program 1 times [2022-12-14 10:07:35,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:07:35,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138256913] [2022-12-14 10:07:35,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:07:35,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:07:35,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:07:35,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:07:35,800 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:07:35,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138256913] [2022-12-14 10:07:35,801 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138256913] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:07:35,801 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:07:35,802 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 10:07:35,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822593426] [2022-12-14 10:07:35,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:07:35,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 10:07:35,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:07:35,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 10:07:35,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:07:35,835 INFO L87 Difference]: Start difference. First operand has 10 states, 8 states have (on average 1.625) internal successors, (13), 9 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:07:35,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:07:35,870 INFO L93 Difference]: Finished difference Result 18 states and 23 transitions. [2022-12-14 10:07:35,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 10:07:35,872 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-12-14 10:07:35,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:07:35,878 INFO L225 Difference]: With dead ends: 18 [2022-12-14 10:07:35,879 INFO L226 Difference]: Without dead ends: 8 [2022-12-14 10:07:35,881 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:07:35,884 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 0 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 10:07:35,884 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 9 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 10:07:35,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2022-12-14 10:07:35,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2022-12-14 10:07:35,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:07:35,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 9 transitions. [2022-12-14 10:07:35,907 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 9 transitions. Word has length 6 [2022-12-14 10:07:35,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:07:35,908 INFO L495 AbstractCegarLoop]: Abstraction has 8 states and 9 transitions. [2022-12-14 10:07:35,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:07:35,908 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 9 transitions. [2022-12-14 10:07:35,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-12-14 10:07:35,908 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:07:35,908 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:07:35,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 10:07:35,909 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:07:35,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:07:35,909 INFO L85 PathProgramCache]: Analyzing trace with hash -1413550180, now seen corresponding path program 1 times [2022-12-14 10:07:35,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:07:35,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275049755] [2022-12-14 10:07:35,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:07:35,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:07:35,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:07:35,990 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 10:07:35,991 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:07:35,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275049755] [2022-12-14 10:07:35,991 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275049755] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:07:35,991 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:07:35,991 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 10:07:35,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325927736] [2022-12-14 10:07:35,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:07:35,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 10:07:35,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:07:35,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 10:07:35,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 10:07:35,995 INFO L87 Difference]: Start difference. First operand 8 states and 9 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:07:36,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:07:36,017 INFO L93 Difference]: Finished difference Result 12 states and 13 transitions. [2022-12-14 10:07:36,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 10:07:36,018 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-12-14 10:07:36,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:07:36,018 INFO L225 Difference]: With dead ends: 12 [2022-12-14 10:07:36,019 INFO L226 Difference]: Without dead ends: 9 [2022-12-14 10:07:36,019 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 10:07:36,020 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 5 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 10:07:36,021 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 4 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 10:07:36,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2022-12-14 10:07:36,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2022-12-14 10:07:36,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.25) internal successors, (10), 8 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:07:36,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2022-12-14 10:07:36,025 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 7 [2022-12-14 10:07:36,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:07:36,025 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 10 transitions. [2022-12-14 10:07:36,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:07:36,026 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2022-12-14 10:07:36,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-12-14 10:07:36,026 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:07:36,027 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:07:36,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 10:07:36,027 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:07:36,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:07:36,028 INFO L85 PathProgramCache]: Analyzing trace with hash -870274037, now seen corresponding path program 1 times [2022-12-14 10:07:36,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:07:36,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751805634] [2022-12-14 10:07:36,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:07:36,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:07:36,056 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 10:07:36,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1909425857] [2022-12-14 10:07:36,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:07:36,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:07:36,057 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c5080c-b942-49af-8a12-51f9141def7b/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:07:36,058 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c5080c-b942-49af-8a12-51f9141def7b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:07:36,059 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c5080c-b942-49af-8a12-51f9141def7b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 10:07:36,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:07:36,122 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 33 conjunts are in the unsatisfiable core [2022-12-14 10:07:36,129 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:07:36,182 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 [2022-12-14 10:07:36,194 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 10:07:36,228 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 19 treesize of output 18 [2022-12-14 10:07:36,317 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 36 treesize of output 23 [2022-12-14 10:07:36,370 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 43 treesize of output 27 [2022-12-14 10:07:36,389 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:07:36,389 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:07:36,468 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 7 treesize of output 5 [2022-12-14 10:07:36,571 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:07:36,571 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:07:36,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751805634] [2022-12-14 10:07:36,572 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 10:07:36,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1909425857] [2022-12-14 10:07:36,572 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1909425857] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 10:07:36,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [233326582] [2022-12-14 10:07:36,586 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2022-12-14 10:07:36,586 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 10:07:36,589 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 10:07:36,593 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 10:07:36,593 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 10:07:36,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:07:36,653 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-12-14 10:07:36,653 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 30 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 1 case distinctions, treesize of input 82 treesize of output 112 [2022-12-14 10:07:36,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:07:36,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:07:36,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:07:36,744 INFO L321 Elim1Store]: treesize reduction 94, result has 27.7 percent of original size [2022-12-14 10:07:36,745 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 8 case distinctions, treesize of input 40 treesize of output 69 [2022-12-14 10:07:36,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:07:36,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:07:36,771 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 29 treesize of output 39 [2022-12-14 10:07:36,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:07:36,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:07:36,814 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 37 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 0 case distinctions, treesize of input 94 treesize of output 123 [2022-12-14 10:07:36,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:07:36,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:07:36,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:07:36,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:07:36,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:07:36,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:07:36,951 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:07:36,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:07:36,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:07:36,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:07:36,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:07:36,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:07:36,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:07:37,011 INFO L321 Elim1Store]: treesize reduction 214, result has 11.9 percent of original size [2022-12-14 10:07:37,012 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 41 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 25 case distinctions, treesize of input 448 treesize of output 436 [2022-12-14 10:07:37,099 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 0 case distinctions, treesize of input 16 treesize of output 12 [2022-12-14 10:07:37,143 INFO L321 Elim1Store]: treesize reduction 14, result has 58.8 percent of original size [2022-12-14 10:07:37,143 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 2 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 33 [2022-12-14 10:07:37,191 INFO L321 Elim1Store]: treesize reduction 14, result has 58.8 percent of original size [2022-12-14 10:07:37,191 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 2 new quantified variables, introduced 2 case distinctions, treesize of input 29 treesize of output 32 [2022-12-14 10:07:37,267 INFO L321 Elim1Store]: treesize reduction 29, result has 60.8 percent of original size [2022-12-14 10:07:37,267 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 2 new quantified variables, introduced 2 case distinctions, treesize of input 40 treesize of output 58 [2022-12-14 10:07:37,327 INFO L321 Elim1Store]: treesize reduction 29, result has 60.8 percent of original size [2022-12-14 10:07:37,327 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 2 new quantified variables, introduced 2 case distinctions, treesize of input 39 treesize of output 57 [2022-12-14 10:07:37,358 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 10:07:37,679 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '138#(and (<= 0 ~N~0) (= |ULTIMATE.start_main_~a~0#1.offset| 0) (<= ~N~0 2147483647) (= (select (select |#memory_int| |ULTIMATE.start_main_~#sum~0#1.base|) |ULTIMATE.start_main_~#sum~0#1.offset|) |ULTIMATE.start_main_#t~mem13#1|) (= (ite (= (* ~N~0 4) |ULTIMATE.start_main_#t~mem13#1|) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |ULTIMATE.start_main_~#sum~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_~cond#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~#sum~0#1.base|) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |#NULL.base| 0) (not (< |ULTIMATE.start_main_~i~0#1| ~N~0)))' at error location [2022-12-14 10:07:37,679 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 10:07:37,679 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-14 10:07:37,679 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2022-12-14 10:07:37,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211457331] [2022-12-14 10:07:37,679 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-14 10:07:37,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-14 10:07:37,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:07:37,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-14 10:07:37,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2022-12-14 10:07:37,681 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. Second operand has 12 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 12 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:07:37,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:07:37,761 INFO L93 Difference]: Finished difference Result 15 states and 17 transitions. [2022-12-14 10:07:37,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 10:07:37,761 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 12 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-12-14 10:07:37,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:07:37,761 INFO L225 Difference]: With dead ends: 15 [2022-12-14 10:07:37,761 INFO L226 Difference]: Without dead ends: 12 [2022-12-14 10:07:37,762 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 6 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2022-12-14 10:07:37,763 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 1 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 10:07:37,763 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 14 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 10:07:37,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2022-12-14 10:07:37,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 11. [2022-12-14 10:07:37,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.3) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:07:37,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 13 transitions. [2022-12-14 10:07:37,767 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 13 transitions. Word has length 8 [2022-12-14 10:07:37,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:07:37,767 INFO L495 AbstractCegarLoop]: Abstraction has 11 states and 13 transitions. [2022-12-14 10:07:37,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 12 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:07:37,768 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 13 transitions. [2022-12-14 10:07:37,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-12-14 10:07:37,768 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:07:37,768 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:07:37,774 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c5080c-b942-49af-8a12-51f9141def7b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 10:07:37,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c5080c-b942-49af-8a12-51f9141def7b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:07:37,971 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:07:37,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:07:37,973 INFO L85 PathProgramCache]: Analyzing trace with hash -1208582788, now seen corresponding path program 2 times [2022-12-14 10:07:37,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:07:37,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824481502] [2022-12-14 10:07:37,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:07:37,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:07:38,015 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 10:07:38,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1268708501] [2022-12-14 10:07:38,016 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 10:07:38,016 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:07:38,017 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c5080c-b942-49af-8a12-51f9141def7b/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:07:38,018 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c5080c-b942-49af-8a12-51f9141def7b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:07:38,019 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c5080c-b942-49af-8a12-51f9141def7b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 10:07:38,063 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-14 10:07:38,063 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 10:07:38,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-14 10:07:38,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:07:38,086 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:07:38,086 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:07:38,111 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:07:38,112 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:07:38,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824481502] [2022-12-14 10:07:38,112 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 10:07:38,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1268708501] [2022-12-14 10:07:38,112 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1268708501] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 10:07:38,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [629736745] [2022-12-14 10:07:38,114 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2022-12-14 10:07:38,114 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 10:07:38,115 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 10:07:38,115 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 10:07:38,115 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 10:07:38,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:07:38,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:07:38,181 INFO L321 Elim1Store]: treesize reduction 71, result has 30.4 percent of original size [2022-12-14 10:07:38,182 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 29 treesize of output 54 [2022-12-14 10:07:38,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:07:38,212 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-12-14 10:07:38,212 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 30 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 1 case distinctions, treesize of input 82 treesize of output 112 [2022-12-14 10:07:38,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:07:38,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:07:38,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:07:38,290 INFO L321 Elim1Store]: treesize reduction 94, result has 27.7 percent of original size [2022-12-14 10:07:38,291 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 8 case distinctions, treesize of input 40 treesize of output 69 [2022-12-14 10:07:38,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:07:38,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:07:38,335 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 37 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 0 case distinctions, treesize of input 89 treesize of output 118 [2022-12-14 10:07:38,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:07:38,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:07:38,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:07:38,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:07:38,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:07:38,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:07:38,461 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:07:38,461 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:07:38,515 INFO L321 Elim1Store]: treesize reduction 186, result has 18.4 percent of original size [2022-12-14 10:07:38,515 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 34 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 26 case distinctions, treesize of input 443 treesize of output 437 [2022-12-14 10:07:38,612 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 0 case distinctions, treesize of input 16 treesize of output 12 [2022-12-14 10:07:38,639 INFO L321 Elim1Store]: treesize reduction 14, result has 58.8 percent of original size [2022-12-14 10:07:38,640 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 2 new quantified variables, introduced 2 case distinctions, treesize of input 29 treesize of output 32 [2022-12-14 10:07:38,667 INFO L321 Elim1Store]: treesize reduction 14, result has 58.8 percent of original size [2022-12-14 10:07:38,668 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 2 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 33 [2022-12-14 10:07:38,738 INFO L321 Elim1Store]: treesize reduction 29, result has 60.8 percent of original size [2022-12-14 10:07:38,739 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 2 new quantified variables, introduced 2 case distinctions, treesize of input 39 treesize of output 57 [2022-12-14 10:07:38,788 INFO L321 Elim1Store]: treesize reduction 29, result has 60.8 percent of original size [2022-12-14 10:07:38,789 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 2 new quantified variables, introduced 2 case distinctions, treesize of input 40 treesize of output 58 [2022-12-14 10:07:38,840 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 10:07:39,088 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '239#(and (<= 0 ~N~0) (= |ULTIMATE.start_main_~a~0#1.offset| 0) (<= ~N~0 2147483647) (= (select (select |#memory_int| |ULTIMATE.start_main_~#sum~0#1.base|) |ULTIMATE.start_main_~#sum~0#1.offset|) |ULTIMATE.start_main_#t~mem13#1|) (= (ite (= (* ~N~0 4) |ULTIMATE.start_main_#t~mem13#1|) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |ULTIMATE.start_main_~#sum~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_~cond#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~#sum~0#1.base|) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |#NULL.base| 0) (not (< |ULTIMATE.start_main_~i~0#1| ~N~0)))' at error location [2022-12-14 10:07:39,088 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 10:07:39,088 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-14 10:07:39,088 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2022-12-14 10:07:39,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645457475] [2022-12-14 10:07:39,089 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-14 10:07:39,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 10:07:39,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:07:39,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 10:07:39,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2022-12-14 10:07:39,090 INFO L87 Difference]: Start difference. First operand 11 states and 13 transitions. Second operand has 8 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:07:39,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:07:39,132 INFO L93 Difference]: Finished difference Result 20 states and 22 transitions. [2022-12-14 10:07:39,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-14 10:07:39,133 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-12-14 10:07:39,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:07:39,133 INFO L225 Difference]: With dead ends: 20 [2022-12-14 10:07:39,133 INFO L226 Difference]: Without dead ends: 14 [2022-12-14 10:07:39,133 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 10 SyntacticMatches, 5 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2022-12-14 10:07:39,134 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 7 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 10:07:39,134 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 8 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 10:07:39,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-12-14 10:07:39,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 10. [2022-12-14 10:07:39,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:07:39,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2022-12-14 10:07:39,137 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 9 [2022-12-14 10:07:39,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:07:39,138 INFO L495 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2022-12-14 10:07:39,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:07:39,138 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2022-12-14 10:07:39,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-12-14 10:07:39,138 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:07:39,138 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:07:39,143 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c5080c-b942-49af-8a12-51f9141def7b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-14 10:07:39,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c5080c-b942-49af-8a12-51f9141def7b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:07:39,340 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:07:39,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:07:39,341 INFO L85 PathProgramCache]: Analyzing trace with hash -1413604450, now seen corresponding path program 3 times [2022-12-14 10:07:39,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:07:39,342 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580806064] [2022-12-14 10:07:39,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:07:39,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:07:39,380 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 10:07:39,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1790967383] [2022-12-14 10:07:39,380 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-14 10:07:39,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:07:39,381 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c5080c-b942-49af-8a12-51f9141def7b/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:07:39,384 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c5080c-b942-49af-8a12-51f9141def7b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:07:39,386 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c5080c-b942-49af-8a12-51f9141def7b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 10:07:39,483 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-14 10:07:39,483 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 10:07:39,484 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-14 10:07:39,485 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:07:39,505 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:07:39,505 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:07:39,525 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:07:39,526 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:07:39,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580806064] [2022-12-14 10:07:39,526 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 10:07:39,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1790967383] [2022-12-14 10:07:39,526 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1790967383] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 10:07:39,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1199479602] [2022-12-14 10:07:39,528 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2022-12-14 10:07:39,528 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 10:07:39,528 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 10:07:39,529 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 10:07:39,529 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 10:07:39,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:07:39,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:07:39,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:07:39,594 INFO L321 Elim1Store]: treesize reduction 94, result has 27.7 percent of original size [2022-12-14 10:07:39,594 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 8 case distinctions, treesize of input 40 treesize of output 69 [2022-12-14 10:07:39,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:07:39,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:07:39,610 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 29 treesize of output 39 [2022-12-14 10:07:39,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:07:39,623 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 32 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 108 [2022-12-14 10:07:39,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:07:39,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:07:39,656 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 37 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 0 case distinctions, treesize of input 89 treesize of output 118 [2022-12-14 10:07:39,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:07:39,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:07:39,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:07:39,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:07:39,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:07:39,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:07:39,734 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:07:39,735 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:07:39,783 INFO L321 Elim1Store]: treesize reduction 186, result has 18.4 percent of original size [2022-12-14 10:07:39,784 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 34 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 26 case distinctions, treesize of input 443 treesize of output 437 [2022-12-14 10:07:39,850 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 0 case distinctions, treesize of input 16 treesize of output 12 [2022-12-14 10:07:39,881 INFO L321 Elim1Store]: treesize reduction 14, result has 58.8 percent of original size [2022-12-14 10:07:39,882 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 2 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 33 [2022-12-14 10:07:39,915 INFO L321 Elim1Store]: treesize reduction 14, result has 58.8 percent of original size [2022-12-14 10:07:39,915 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 2 new quantified variables, introduced 2 case distinctions, treesize of input 29 treesize of output 32 [2022-12-14 10:07:39,971 INFO L321 Elim1Store]: treesize reduction 29, result has 60.8 percent of original size [2022-12-14 10:07:39,972 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 2 new quantified variables, introduced 2 case distinctions, treesize of input 40 treesize of output 58 [2022-12-14 10:07:40,025 INFO L321 Elim1Store]: treesize reduction 29, result has 60.8 percent of original size [2022-12-14 10:07:40,025 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 2 new quantified variables, introduced 2 case distinctions, treesize of input 39 treesize of output 57 [2022-12-14 10:07:40,044 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 10:07:40,277 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '350#(and (<= 0 ~N~0) (= |ULTIMATE.start_main_~a~0#1.offset| 0) (<= ~N~0 2147483647) (= (select (select |#memory_int| |ULTIMATE.start_main_~#sum~0#1.base|) |ULTIMATE.start_main_~#sum~0#1.offset|) |ULTIMATE.start_main_#t~mem13#1|) (= (ite (= (* ~N~0 4) |ULTIMATE.start_main_#t~mem13#1|) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |ULTIMATE.start_main_~#sum~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_~cond#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~#sum~0#1.base|) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |#NULL.base| 0) (not (< |ULTIMATE.start_main_~i~0#1| ~N~0)))' at error location [2022-12-14 10:07:40,277 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 10:07:40,277 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-14 10:07:40,277 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2022-12-14 10:07:40,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244141056] [2022-12-14 10:07:40,277 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-14 10:07:40,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-14 10:07:40,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:07:40,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-14 10:07:40,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2022-12-14 10:07:40,279 INFO L87 Difference]: Start difference. First operand 10 states and 11 transitions. Second operand has 9 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 9 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:07:40,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:07:40,341 INFO L93 Difference]: Finished difference Result 14 states and 15 transitions. [2022-12-14 10:07:40,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 10:07:40,341 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 9 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-12-14 10:07:40,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:07:40,342 INFO L225 Difference]: With dead ends: 14 [2022-12-14 10:07:40,342 INFO L226 Difference]: Without dead ends: 11 [2022-12-14 10:07:40,342 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 9 SyntacticMatches, 5 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2022-12-14 10:07:40,343 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 11 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 10:07:40,343 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 8 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 10:07:40,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2022-12-14 10:07:40,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2022-12-14 10:07:40,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:07:40,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2022-12-14 10:07:40,346 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 9 [2022-12-14 10:07:40,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:07:40,347 INFO L495 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions. [2022-12-14 10:07:40,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 9 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:07:40,347 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2022-12-14 10:07:40,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-12-14 10:07:40,347 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:07:40,347 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2022-12-14 10:07:40,352 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c5080c-b942-49af-8a12-51f9141def7b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-14 10:07:40,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c5080c-b942-49af-8a12-51f9141def7b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:07:40,548 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:07:40,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:07:40,548 INFO L85 PathProgramCache]: Analyzing trace with hash -871956407, now seen corresponding path program 4 times [2022-12-14 10:07:40,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:07:40,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87507107] [2022-12-14 10:07:40,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:07:40,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:07:40,560 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 10:07:40,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1657813812] [2022-12-14 10:07:40,560 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-14 10:07:40,560 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:07:40,561 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c5080c-b942-49af-8a12-51f9141def7b/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:07:40,561 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c5080c-b942-49af-8a12-51f9141def7b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:07:40,562 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c5080c-b942-49af-8a12-51f9141def7b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 10:07:40,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 10:07:40,622 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 10:07:40,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 10:07:40,658 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-12-14 10:07:40,658 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-14 10:07:40,659 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-12-14 10:07:40,665 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c5080c-b942-49af-8a12-51f9141def7b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-14 10:07:40,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c5080c-b942-49af-8a12-51f9141def7b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-12-14 10:07:40,870 INFO L445 BasicCegarLoop]: Path program histogram: [4, 1, 1] [2022-12-14 10:07:40,879 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 10:07:40,911 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 10:07:40 BoogieIcfgContainer [2022-12-14 10:07:40,911 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 10:07:40,911 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 10:07:40,911 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 10:07:40,911 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 10:07:40,912 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 10:07:35" (3/4) ... [2022-12-14 10:07:40,913 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-12-14 10:07:40,937 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c5080c-b942-49af-8a12-51f9141def7b/bin/utaipan-gh47qXpMRh/witness.graphml [2022-12-14 10:07:40,937 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 10:07:40,937 INFO L158 Benchmark]: Toolchain (without parser) took 5964.19ms. Allocated memory was 117.4MB in the beginning and 157.3MB in the end (delta: 39.8MB). Free memory was 83.1MB in the beginning and 107.3MB in the end (delta: -24.2MB). Peak memory consumption was 17.1MB. Max. memory is 16.1GB. [2022-12-14 10:07:40,938 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 117.4MB. Free memory was 82.1MB in the beginning and 82.1MB in the end (delta: 28.5kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 10:07:40,938 INFO L158 Benchmark]: CACSL2BoogieTranslator took 157.29ms. Allocated memory is still 117.4MB. Free memory was 82.7MB in the beginning and 72.0MB in the end (delta: 10.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-12-14 10:07:40,938 INFO L158 Benchmark]: Boogie Procedure Inliner took 23.53ms. Allocated memory is still 117.4MB. Free memory was 72.0MB in the beginning and 70.5MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 10:07:40,938 INFO L158 Benchmark]: Boogie Preprocessor took 17.02ms. Allocated memory is still 117.4MB. Free memory was 70.5MB in the beginning and 69.2MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 10:07:40,938 INFO L158 Benchmark]: RCFGBuilder took 289.44ms. Allocated memory is still 117.4MB. Free memory was 69.2MB in the beginning and 54.5MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-12-14 10:07:40,939 INFO L158 Benchmark]: TraceAbstraction took 5443.85ms. Allocated memory was 117.4MB in the beginning and 157.3MB in the end (delta: 39.8MB). Free memory was 53.8MB in the beginning and 109.4MB in the end (delta: -55.7MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 10:07:40,939 INFO L158 Benchmark]: Witness Printer took 25.97ms. Allocated memory is still 157.3MB. Free memory was 109.4MB in the beginning and 107.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 10:07:40,940 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 117.4MB. Free memory was 82.1MB in the beginning and 82.1MB in the end (delta: 28.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 157.29ms. Allocated memory is still 117.4MB. Free memory was 82.7MB in the beginning and 72.0MB in the end (delta: 10.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 23.53ms. Allocated memory is still 117.4MB. Free memory was 72.0MB in the beginning and 70.5MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 17.02ms. Allocated memory is still 117.4MB. Free memory was 70.5MB in the beginning and 69.2MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 289.44ms. Allocated memory is still 117.4MB. Free memory was 69.2MB in the beginning and 54.5MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 5443.85ms. Allocated memory was 117.4MB in the beginning and 157.3MB in the end (delta: 39.8MB). Free memory was 53.8MB in the beginning and 109.4MB in the end (delta: -55.7MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 25.97ms. Allocated memory is still 157.3MB. Free memory was 109.4MB in the beginning and 107.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 15]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L19] int N; [L23] N = __VERIFIER_nondet_int() [L24] COND FALSE !(N <= 0) [L25] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) [L13] COND FALSE !(!cond) [L25] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) [L27] int i; [L28] long long sum[1]; [L29] int *a = malloc(sizeof(int)*N); [L31] sum[0] = 1 [L32] i=0 VAL [a={-1:0}, i=0, N=2, sum={4:0}] [L32] COND TRUE i