./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-programs/copysome2-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0ab28c-2607-4cbb-b8fa-7aaf6961dca2/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0ab28c-2607-4cbb-b8fa-7aaf6961dca2/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0ab28c-2607-4cbb-b8fa-7aaf6961dca2/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0ab28c-2607-4cbb-b8fa-7aaf6961dca2/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-programs/copysome2-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0ab28c-2607-4cbb-b8fa-7aaf6961dca2/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0ab28c-2607-4cbb-b8fa-7aaf6961dca2/bin/utaipan-7li7fVZpFI --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 f2acf1d88f73f9b993c11cfca399c08f166d9054c3a2d816b9c02e1296c27b35 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-03 03:59:55,162 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 03:59:55,164 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 03:59:55,220 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 03:59:55,220 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 03:59:55,226 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 03:59:55,229 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 03:59:55,235 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 03:59:55,238 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 03:59:55,240 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 03:59:55,241 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 03:59:55,245 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 03:59:55,246 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 03:59:55,255 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 03:59:55,257 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 03:59:55,260 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 03:59:55,262 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 03:59:55,265 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 03:59:55,267 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 03:59:55,272 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 03:59:55,274 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 03:59:55,279 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 03:59:55,281 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 03:59:55,285 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 03:59:55,292 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 03:59:55,293 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 03:59:55,293 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 03:59:55,296 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 03:59:55,297 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 03:59:55,298 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 03:59:55,299 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 03:59:55,300 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 03:59:55,303 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 03:59:55,304 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 03:59:55,305 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 03:59:55,306 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 03:59:55,306 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 03:59:55,307 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 03:59:55,307 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 03:59:55,308 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 03:59:55,309 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 03:59:55,310 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0ab28c-2607-4cbb-b8fa-7aaf6961dca2/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-03 03:59:55,364 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 03:59:55,365 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 03:59:55,366 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 03:59:55,366 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 03:59:55,367 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 03:59:55,367 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 03:59:55,368 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 03:59:55,368 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 03:59:55,368 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 03:59:55,369 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 03:59:55,370 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 03:59:55,370 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 03:59:55,370 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 03:59:55,371 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 03:59:55,371 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 03:59:55,371 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 03:59:55,372 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 03:59:55,372 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 03:59:55,373 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 03:59:55,373 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 03:59:55,373 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 03:59:55,374 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 03:59:55,374 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 03:59:55,374 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 03:59:55,375 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 03:59:55,375 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 03:59:55,375 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 03:59:55,376 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 03:59:55,376 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 03:59:55,376 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 03:59:55,377 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 03:59:55,377 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 03:59:55,378 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:59:55,378 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 03:59:55,378 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 03:59:55,379 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 03:59:55,379 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 03:59:55,379 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 03:59:55,381 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 03:59:55,382 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 03:59:55,382 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 03:59:55,382 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_5c0ab28c-2607-4cbb-b8fa-7aaf6961dca2/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0ab28c-2607-4cbb-b8fa-7aaf6961dca2/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f2acf1d88f73f9b993c11cfca399c08f166d9054c3a2d816b9c02e1296c27b35 [2022-11-03 03:59:55,686 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 03:59:55,718 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 03:59:55,721 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 03:59:55,722 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 03:59:55,723 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 03:59:55,724 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0ab28c-2607-4cbb-b8fa-7aaf6961dca2/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/array-programs/copysome2-1.i [2022-11-03 03:59:55,802 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0ab28c-2607-4cbb-b8fa-7aaf6961dca2/bin/utaipan-7li7fVZpFI/data/ad6b64113/28c5e72c96da416cb5cb2f8a622bd7c0/FLAGc75967c01 [2022-11-03 03:59:56,304 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 03:59:56,306 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0ab28c-2607-4cbb-b8fa-7aaf6961dca2/sv-benchmarks/c/array-programs/copysome2-1.i [2022-11-03 03:59:56,315 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0ab28c-2607-4cbb-b8fa-7aaf6961dca2/bin/utaipan-7li7fVZpFI/data/ad6b64113/28c5e72c96da416cb5cb2f8a622bd7c0/FLAGc75967c01 [2022-11-03 03:59:56,626 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0ab28c-2607-4cbb-b8fa-7aaf6961dca2/bin/utaipan-7li7fVZpFI/data/ad6b64113/28c5e72c96da416cb5cb2f8a622bd7c0 [2022-11-03 03:59:56,634 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 03:59:56,637 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 03:59:56,639 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 03:59:56,640 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 03:59:56,644 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 03:59:56,645 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:59:56" (1/1) ... [2022-11-03 03:59:56,648 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@666d1043 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:59:56, skipping insertion in model container [2022-11-03 03:59:56,649 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:59:56" (1/1) ... [2022-11-03 03:59:56,657 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 03:59:56,677 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 03:59:56,907 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0ab28c-2607-4cbb-b8fa-7aaf6961dca2/sv-benchmarks/c/array-programs/copysome2-1.i[804,817] [2022-11-03 03:59:56,933 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:59:56,955 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 03:59:56,973 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0ab28c-2607-4cbb-b8fa-7aaf6961dca2/sv-benchmarks/c/array-programs/copysome2-1.i[804,817] [2022-11-03 03:59:57,007 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:59:57,025 INFO L208 MainTranslator]: Completed translation [2022-11-03 03:59:57,025 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:59:57 WrapperNode [2022-11-03 03:59:57,025 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 03:59:57,026 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 03:59:57,026 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 03:59:57,027 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 03:59:57,035 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:59:57" (1/1) ... [2022-11-03 03:59:57,044 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:59:57" (1/1) ... [2022-11-03 03:59:57,067 INFO L138 Inliner]: procedures = 16, calls = 27, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 92 [2022-11-03 03:59:57,068 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 03:59:57,069 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 03:59:57,069 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 03:59:57,069 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 03:59:57,080 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:59:57" (1/1) ... [2022-11-03 03:59:57,080 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:59:57" (1/1) ... [2022-11-03 03:59:57,082 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:59:57" (1/1) ... [2022-11-03 03:59:57,083 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:59:57" (1/1) ... [2022-11-03 03:59:57,106 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:59:57" (1/1) ... [2022-11-03 03:59:57,111 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:59:57" (1/1) ... [2022-11-03 03:59:57,117 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:59:57" (1/1) ... [2022-11-03 03:59:57,118 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:59:57" (1/1) ... [2022-11-03 03:59:57,121 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 03:59:57,122 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 03:59:57,122 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 03:59:57,122 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 03:59:57,124 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:59:57" (1/1) ... [2022-11-03 03:59:57,135 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:59:57,147 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0ab28c-2607-4cbb-b8fa-7aaf6961dca2/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:59:57,161 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0ab28c-2607-4cbb-b8fa-7aaf6961dca2/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 03:59:57,179 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0ab28c-2607-4cbb-b8fa-7aaf6961dca2/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 03:59:57,219 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 03:59:57,219 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 03:59:57,220 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 03:59:57,220 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 03:59:57,220 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 03:59:57,220 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 03:59:57,220 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 03:59:57,220 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 03:59:57,294 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 03:59:57,296 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 03:59:57,570 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 03:59:57,680 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 03:59:57,680 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-03 03:59:57,683 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:59:57 BoogieIcfgContainer [2022-11-03 03:59:57,683 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 03:59:57,695 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 03:59:57,696 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 03:59:57,700 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 03:59:57,700 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 03:59:56" (1/3) ... [2022-11-03 03:59:57,701 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@727ce8a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:59:57, skipping insertion in model container [2022-11-03 03:59:57,701 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:59:57" (2/3) ... [2022-11-03 03:59:57,702 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@727ce8a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:59:57, skipping insertion in model container [2022-11-03 03:59:57,702 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:59:57" (3/3) ... [2022-11-03 03:59:57,703 INFO L112 eAbstractionObserver]: Analyzing ICFG copysome2-1.i [2022-11-03 03:59:57,725 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 03:59:57,725 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 03:59:57,783 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 03:59:57,792 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;@2b2eae05, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 03:59:57,792 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 03:59:57,797 INFO L276 IsEmpty]: Start isEmpty. Operand has 10 states, 8 states have (on average 1.75) internal successors, (14), 9 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:59:57,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-03 03:59:57,805 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:59:57,806 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:59:57,806 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:59:57,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:59:57,813 INFO L85 PathProgramCache]: Analyzing trace with hash 904902092, now seen corresponding path program 1 times [2022-11-03 03:59:57,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:59:57,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509249397] [2022-11-03 03:59:57,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:59:57,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:59:57,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:59:58,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:59:58,185 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:59:58,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509249397] [2022-11-03 03:59:58,186 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509249397] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:59:58,186 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:59:58,187 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 03:59:58,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774965255] [2022-11-03 03:59:58,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:59:58,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:59:58,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:59:58,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:59:58,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:59:58,242 INFO L87 Difference]: Start difference. First operand has 10 states, 8 states have (on average 1.75) internal successors, (14), 9 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:59:58,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:59:58,334 INFO L93 Difference]: Finished difference Result 21 states and 31 transitions. [2022-11-03 03:59:58,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:59:58,338 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 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 [2022-11-03 03:59:58,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:59:58,349 INFO L225 Difference]: With dead ends: 21 [2022-11-03 03:59:58,349 INFO L226 Difference]: Without dead ends: 12 [2022-11-03 03:59:58,353 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:59:58,365 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:59:58,366 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 8 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:59:58,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2022-11-03 03:59:58,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2022-11-03 03:59:58,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 11 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:59:58,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 15 transitions. [2022-11-03 03:59:58,410 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 15 transitions. Word has length 7 [2022-11-03 03:59:58,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:59:58,411 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 15 transitions. [2022-11-03 03:59:58,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:59:58,412 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 15 transitions. [2022-11-03 03:59:58,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-03 03:59:58,413 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:59:58,414 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:59:58,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 03:59:58,415 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:59:58,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:59:58,418 INFO L85 PathProgramCache]: Analyzing trace with hash 1842715167, now seen corresponding path program 1 times [2022-11-03 03:59:58,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:59:58,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549433259] [2022-11-03 03:59:58,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:59:58,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:59:58,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:59:58,690 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-03 03:59:58,691 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:59:58,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549433259] [2022-11-03 03:59:58,692 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549433259] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:59:58,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1882095568] [2022-11-03 03:59:58,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:59:58,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:59:58,693 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0ab28c-2607-4cbb-b8fa-7aaf6961dca2/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:59:58,696 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0ab28c-2607-4cbb-b8fa-7aaf6961dca2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:59:58,698 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0ab28c-2607-4cbb-b8fa-7aaf6961dca2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 03:59:58,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:59:58,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 03:59:58,852 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:59:58,909 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-03 03:59:58,910 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:59:58,950 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-03 03:59:58,955 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1882095568] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:59:58,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1761219933] [2022-11-03 03:59:58,998 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-03 03:59:58,998 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 03:59:59,005 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 03:59:59,012 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 03:59:59,014 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 03:59:59,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:59:59,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:59:59,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:59:59,246 INFO L356 Elim1Store]: treesize reduction 129, result has 17.8 percent of original size [2022-11-03 03:59:59,247 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 11 case distinctions, treesize of input 55 treesize of output 73 [2022-11-03 03:59:59,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:59:59,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:59:59,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:59:59,281 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 13 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 32 [2022-11-03 03:59:59,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:59:59,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:59:59,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:59:59,375 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 13 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 74 treesize of output 42 [2022-11-03 03:59:59,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:59:59,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:59:59,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:59:59,735 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:59:59,736 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:59:59,739 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:59:59,741 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:59:59,742 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:00:00,034 INFO L356 Elim1Store]: treesize reduction 585, result has 10.8 percent of original size [2022-11-03 04:00:00,035 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 422 treesize of output 377 [2022-11-03 04:00:01,342 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:00:01,343 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:00:01,380 INFO L356 Elim1Store]: treesize reduction 54, result has 40.0 percent of original size [2022-11-03 04:00:01,381 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 2 case distinctions, treesize of input 94 treesize of output 48 [2022-11-03 04:00:01,425 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:00:01,438 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 04:00:01,439 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-11-03 04:00:01,484 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:00:01,505 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 04:00:01,507 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-11-03 04:00:01,609 INFO L356 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-03 04:00:01,610 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-11-03 04:00:01,668 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:00:01,670 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:00:01,674 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:00:02,060 INFO L356 Elim1Store]: treesize reduction 231, result has 34.6 percent of original size [2022-11-03 04:00:02,061 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 14 case distinctions, treesize of input 127 treesize of output 228 [2022-11-03 04:00:02,572 INFO L356 Elim1Store]: treesize reduction 29, result has 3.3 percent of original size [2022-11-03 04:00:02,573 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1161 treesize of output 1119 [2022-11-03 04:00:02,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:00:02,603 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 1096 treesize of output 1029 [2022-11-03 04:00:03,340 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 04:00:04,519 INFO L356 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2022-11-03 04:00:04,520 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 53 treesize of output 37 [2022-11-03 04:00:04,557 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 04:00:04,956 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 04:00:04,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:00:04,984 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2022-11-03 04:00:05,023 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 04:00:05,061 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 04:00:05,144 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:00:05,146 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 25 [2022-11-03 04:00:05,178 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:00:05,179 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2022-11-03 04:00:05,459 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 39 treesize of output 25 [2022-11-03 04:00:05,494 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 19 treesize of output 12 [2022-11-03 04:00:05,539 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 04:00:05,574 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 04:00:05,721 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 04:00:05,750 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 04:00:05,778 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 04:00:06,487 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 04:00:06,500 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 04:00:06,519 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 04:00:06,545 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 04:00:06,558 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 04:00:06,569 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 04:00:07,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:00:07,547 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 54 [2022-11-03 04:00:07,582 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 04:00:07,621 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 04:00:07,669 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 04:00:07,699 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 04:00:07,733 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 04:00:07,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:00:07,825 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 42 [2022-11-03 04:00:07,872 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 04:00:07,907 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 04:00:07,957 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 04:00:08,014 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 04:00:10,021 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:00:10,035 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 04:00:10,036 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-11-03 04:00:10,045 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:00:10,059 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 04:00:10,059 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-11-03 04:00:10,077 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 04:00:10,308 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '127#(and (<= 0 |ULTIMATE.start_main_~#a1~0#1.base|) (<= 200000 |ULTIMATE.start_main_~i~0#1|) (= |ULTIMATE.start_main_~#a3~0#1.offset| 0) (= |ULTIMATE.start_main_~#a1~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 |ULTIMATE.start_main_~#a2~0#1.base|) (= |ULTIMATE.start_main_#t~mem11#1| (select (select |#memory_int| |ULTIMATE.start_main_~#a1~0#1.base|) (+ |ULTIMATE.start_main_~#a1~0#1.offset| (* |ULTIMATE.start_main_~x~0#1| 4)))) (<= 0 |ULTIMATE.start_main_~#a3~0#1.base|) (= |ULTIMATE.start_main_~#a2~0#1.offset| 0) (= (select (select |#memory_int| |ULTIMATE.start_main_~#a3~0#1.base|) (+ |ULTIMATE.start_main_~#a3~0#1.offset| (* |ULTIMATE.start_main_~x~0#1| 4))) |ULTIMATE.start_main_#t~mem12#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (= |ULTIMATE.start_main_~x~0#1| 0) (<= 0 |#StackHeapBarrier|) (= 150000 |ULTIMATE.start_main_~z~0#1|) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (= |ULTIMATE.start_main_#t~mem12#1| |ULTIMATE.start_main_#t~mem11#1|) 1 0)) (= |#NULL.base| 0))' at error location [2022-11-03 04:00:10,308 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 04:00:10,308 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 04:00:10,309 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-11-03 04:00:10,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557850669] [2022-11-03 04:00:10,310 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 04:00:10,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 04:00:10,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:00:10,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 04:00:10,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2022-11-03 04:00:10,312 INFO L87 Difference]: Start difference. First operand 12 states and 15 transitions. Second operand has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:00:10,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:00:10,382 INFO L93 Difference]: Finished difference Result 30 states and 44 transitions. [2022-11-03 04:00:10,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 04:00:10,383 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-03 04:00:10,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:00:10,383 INFO L225 Difference]: With dead ends: 30 [2022-11-03 04:00:10,384 INFO L226 Difference]: Without dead ends: 21 [2022-11-03 04:00:10,384 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 20 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2022-11-03 04:00:10,385 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 04:00:10,386 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 12 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 04:00:10,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2022-11-03 04:00:10,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2022-11-03 04:00:10,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.2) internal successors, (24), 20 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:00:10,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2022-11-03 04:00:10,391 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 10 [2022-11-03 04:00:10,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:00:10,392 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 24 transitions. [2022-11-03 04:00:10,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:00:10,392 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2022-11-03 04:00:10,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-03 04:00:10,393 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:00:10,393 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:00:10,441 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0ab28c-2607-4cbb-b8fa-7aaf6961dca2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-03 04:00:10,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0ab28c-2607-4cbb-b8fa-7aaf6961dca2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:00:10,609 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:00:10,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:00:10,610 INFO L85 PathProgramCache]: Analyzing trace with hash -1262196212, now seen corresponding path program 2 times [2022-11-03 04:00:10,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:00:10,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855685270] [2022-11-03 04:00:10,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:00:10,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:00:10,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:00:10,964 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-03 04:00:10,965 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:00:10,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855685270] [2022-11-03 04:00:10,965 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855685270] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 04:00:10,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [951324392] [2022-11-03 04:00:10,966 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-03 04:00:10,966 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:00:10,966 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0ab28c-2607-4cbb-b8fa-7aaf6961dca2/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:00:10,974 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0ab28c-2607-4cbb-b8fa-7aaf6961dca2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 04:00:10,996 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0ab28c-2607-4cbb-b8fa-7aaf6961dca2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-03 04:00:11,201 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-03 04:00:11,202 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 04:00:11,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 04:00:11,207 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:00:11,241 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-03 04:00:11,242 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:00:11,352 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-03 04:00:11,352 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [951324392] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 04:00:11,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1030621385] [2022-11-03 04:00:11,355 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-03 04:00:11,355 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 04:00:11,355 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 04:00:11,355 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 04:00:11,355 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 04:00:11,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:00:11,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:00:11,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:00:11,484 INFO L356 Elim1Store]: treesize reduction 83, result has 23.9 percent of original size [2022-11-03 04:00:11,484 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 7 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 23 treesize of output 42 [2022-11-03 04:00:11,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:00:11,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:00:11,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:00:11,633 INFO L356 Elim1Store]: treesize reduction 129, result has 17.8 percent of original size [2022-11-03 04:00:11,633 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 11 case distinctions, treesize of input 55 treesize of output 73 [2022-11-03 04:00:11,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:00:11,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:00:11,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:00:11,695 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 13 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 74 treesize of output 42 [2022-11-03 04:00:11,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:00:11,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:00:11,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:00:11,854 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:00:11,855 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:00:11,858 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:00:11,860 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:00:11,861 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:00:12,093 INFO L356 Elim1Store]: treesize reduction 585, result has 10.8 percent of original size [2022-11-03 04:00:12,093 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 422 treesize of output 377 [2022-11-03 04:00:12,966 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:00:12,967 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:00:13,019 INFO L356 Elim1Store]: treesize reduction 54, result has 40.0 percent of original size [2022-11-03 04:00:13,019 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 2 case distinctions, treesize of input 94 treesize of output 48 [2022-11-03 04:00:13,050 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:00:13,064 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 04:00:13,064 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-11-03 04:00:13,100 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:00:13,116 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 04:00:13,117 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-11-03 04:00:13,153 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:00:13,165 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 04:00:13,165 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-11-03 04:00:13,171 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 04:00:13,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:00:13,206 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:00:13,207 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:00:13,208 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:00:13,272 INFO L356 Elim1Store]: treesize reduction 116, result has 22.1 percent of original size [2022-11-03 04:00:13,272 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 143 treesize of output 193 [2022-11-03 04:00:13,506 INFO L356 Elim1Store]: treesize reduction 32, result has 52.2 percent of original size [2022-11-03 04:00:13,507 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 170 treesize of output 184 [2022-11-03 04:00:13,544 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:00:13,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:00:13,547 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 157 treesize of output 122 [2022-11-03 04:00:13,594 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:00:13,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:00:13,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:00:13,599 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:00:13,604 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 155 treesize of output 110 [2022-11-03 04:00:13,704 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:00:13,717 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 04:00:13,718 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-11-03 04:00:13,727 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:00:13,740 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 04:00:13,740 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-11-03 04:00:13,763 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 04:00:14,084 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '340#(and (<= 0 |ULTIMATE.start_main_~#a1~0#1.base|) (<= 200000 |ULTIMATE.start_main_~i~0#1|) (= |ULTIMATE.start_main_~#a3~0#1.offset| 0) (= |ULTIMATE.start_main_~#a1~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 |ULTIMATE.start_main_~#a2~0#1.base|) (= |ULTIMATE.start_main_#t~mem11#1| (select (select |#memory_int| |ULTIMATE.start_main_~#a1~0#1.base|) (+ |ULTIMATE.start_main_~#a1~0#1.offset| (* |ULTIMATE.start_main_~x~0#1| 4)))) (<= 0 |ULTIMATE.start_main_~#a3~0#1.base|) (= |ULTIMATE.start_main_~#a2~0#1.offset| 0) (= (select (select |#memory_int| |ULTIMATE.start_main_~#a3~0#1.base|) (+ |ULTIMATE.start_main_~#a3~0#1.offset| (* |ULTIMATE.start_main_~x~0#1| 4))) |ULTIMATE.start_main_#t~mem12#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (= |ULTIMATE.start_main_~x~0#1| 0) (<= 0 |#StackHeapBarrier|) (= 150000 |ULTIMATE.start_main_~z~0#1|) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (= |ULTIMATE.start_main_#t~mem12#1| |ULTIMATE.start_main_#t~mem11#1|) 1 0)) (= |#NULL.base| 0))' at error location [2022-11-03 04:00:14,084 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 04:00:14,085 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 04:00:14,085 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2022-11-03 04:00:14,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095812945] [2022-11-03 04:00:14,085 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 04:00:14,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-03 04:00:14,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:00:14,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-03 04:00:14,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=180, Unknown=0, NotChecked=0, Total=272 [2022-11-03 04:00:14,087 INFO L87 Difference]: Start difference. First operand 21 states and 24 transitions. Second operand has 13 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 12 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:00:14,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:00:14,221 INFO L93 Difference]: Finished difference Result 54 states and 77 transitions. [2022-11-03 04:00:14,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 04:00:14,222 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 12 states have internal predecessors, (21), 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 19 [2022-11-03 04:00:14,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:00:14,223 INFO L225 Difference]: With dead ends: 54 [2022-11-03 04:00:14,223 INFO L226 Difference]: Without dead ends: 39 [2022-11-03 04:00:14,224 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 41 SyntacticMatches, 5 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=92, Invalid=180, Unknown=0, NotChecked=0, Total=272 [2022-11-03 04:00:14,225 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 04:00:14,225 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 12 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 04:00:14,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-11-03 04:00:14,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2022-11-03 04:00:14,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.105263157894737) internal successors, (42), 38 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:00:14,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2022-11-03 04:00:14,233 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 19 [2022-11-03 04:00:14,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:00:14,233 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2022-11-03 04:00:14,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 12 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:00:14,234 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2022-11-03 04:00:14,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-11-03 04:00:14,235 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:00:14,235 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:00:14,269 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0ab28c-2607-4cbb-b8fa-7aaf6961dca2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-03 04:00:14,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0ab28c-2607-4cbb-b8fa-7aaf6961dca2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-11-03 04:00:14,445 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:00:14,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:00:14,446 INFO L85 PathProgramCache]: Analyzing trace with hash -1863011220, now seen corresponding path program 3 times [2022-11-03 04:00:14,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:00:14,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341751861] [2022-11-03 04:00:14,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:00:14,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:00:14,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:00:15,037 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2022-11-03 04:00:15,037 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:00:15,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341751861] [2022-11-03 04:00:15,038 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341751861] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 04:00:15,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1968834818] [2022-11-03 04:00:15,038 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-03 04:00:15,038 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:00:15,039 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0ab28c-2607-4cbb-b8fa-7aaf6961dca2/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:00:15,045 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0ab28c-2607-4cbb-b8fa-7aaf6961dca2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 04:00:15,064 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0ab28c-2607-4cbb-b8fa-7aaf6961dca2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-03 04:00:15,268 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-03 04:00:15,268 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 04:00:15,273 INFO L263 TraceCheckSpWp]: Trace formula consists of 564 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 04:00:15,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:00:15,319 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2022-11-03 04:00:15,320 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:00:15,610 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2022-11-03 04:00:15,610 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1968834818] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 04:00:15,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [856781124] [2022-11-03 04:00:15,613 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-03 04:00:15,613 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 04:00:15,613 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 04:00:15,613 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 04:00:15,613 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 04:00:15,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:00:15,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:00:15,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:00:15,725 INFO L356 Elim1Store]: treesize reduction 83, result has 23.9 percent of original size [2022-11-03 04:00:15,725 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 7 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 23 treesize of output 42 [2022-11-03 04:00:15,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:00:15,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:00:15,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:00:15,844 INFO L356 Elim1Store]: treesize reduction 129, result has 17.8 percent of original size [2022-11-03 04:00:15,845 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 11 case distinctions, treesize of input 55 treesize of output 73 [2022-11-03 04:00:15,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:00:15,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:00:15,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:00:15,899 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 13 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 109 treesize of output 57 [2022-11-03 04:00:16,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:00:16,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:00:16,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:00:16,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:00:16,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:00:16,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:00:16,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:00:16,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:00:16,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:00:16,034 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:00:16,035 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:00:16,041 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:00:16,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:00:16,049 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:00:16,140 INFO L356 Elim1Store]: treesize reduction 264, result has 10.8 percent of original size [2022-11-03 04:00:16,141 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 12 case distinctions, treesize of input 452 treesize of output 374 [2022-11-03 04:00:16,252 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:00:16,253 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:00:16,299 INFO L356 Elim1Store]: treesize reduction 54, result has 40.0 percent of original size [2022-11-03 04:00:16,299 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 2 case distinctions, treesize of input 94 treesize of output 48 [2022-11-03 04:00:16,344 INFO L356 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-03 04:00:16,344 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-11-03 04:00:16,393 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:00:16,394 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:00:16,449 INFO L356 Elim1Store]: treesize reduction 99, result has 29.3 percent of original size [2022-11-03 04:00:16,450 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 82 treesize of output 101 [2022-11-03 04:00:16,523 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:00:16,538 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 04:00:16,538 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-11-03 04:00:16,560 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:00:16,572 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 04:00:16,572 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-11-03 04:00:16,578 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 04:00:16,624 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:00:16,625 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:00:16,627 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:00:16,690 INFO L356 Elim1Store]: treesize reduction 112, result has 24.8 percent of original size [2022-11-03 04:00:16,691 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 143 treesize of output 197 [2022-11-03 04:00:16,792 INFO L356 Elim1Store]: treesize reduction 12, result has 60.0 percent of original size [2022-11-03 04:00:16,792 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 174 treesize of output 171 [2022-11-03 04:00:16,847 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:00:16,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:00:16,851 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 154 treesize of output 109 [2022-11-03 04:00:16,877 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 137 treesize of output 109 [2022-11-03 04:00:17,007 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:00:17,020 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 04:00:17,020 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-11-03 04:00:17,029 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:00:17,043 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 04:00:17,043 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-11-03 04:00:17,061 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 04:00:17,296 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '757#(and (<= 0 |ULTIMATE.start_main_~#a1~0#1.base|) (<= 200000 |ULTIMATE.start_main_~i~0#1|) (= |ULTIMATE.start_main_~#a3~0#1.offset| 0) (= |ULTIMATE.start_main_~#a1~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 |ULTIMATE.start_main_~#a2~0#1.base|) (= |ULTIMATE.start_main_#t~mem11#1| (select (select |#memory_int| |ULTIMATE.start_main_~#a1~0#1.base|) (+ |ULTIMATE.start_main_~#a1~0#1.offset| (* |ULTIMATE.start_main_~x~0#1| 4)))) (<= 0 |ULTIMATE.start_main_~#a3~0#1.base|) (= |ULTIMATE.start_main_~#a2~0#1.offset| 0) (= (select (select |#memory_int| |ULTIMATE.start_main_~#a3~0#1.base|) (+ |ULTIMATE.start_main_~#a3~0#1.offset| (* |ULTIMATE.start_main_~x~0#1| 4))) |ULTIMATE.start_main_#t~mem12#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (= |ULTIMATE.start_main_~x~0#1| 0) (<= 0 |#StackHeapBarrier|) (= 150000 |ULTIMATE.start_main_~z~0#1|) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (= |ULTIMATE.start_main_#t~mem12#1| |ULTIMATE.start_main_#t~mem11#1|) 1 0)) (= |#NULL.base| 0))' at error location [2022-11-03 04:00:17,296 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 04:00:17,296 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 04:00:17,296 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 24 [2022-11-03 04:00:17,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978377501] [2022-11-03 04:00:17,297 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 04:00:17,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-03 04:00:17,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:00:17,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-03 04:00:17,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=314, Invalid=498, Unknown=0, NotChecked=0, Total=812 [2022-11-03 04:00:17,299 INFO L87 Difference]: Start difference. First operand 39 states and 42 transitions. Second operand has 25 states, 25 states have (on average 1.32) internal successors, (33), 24 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:00:17,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:00:17,622 INFO L93 Difference]: Finished difference Result 102 states and 143 transitions. [2022-11-03 04:00:17,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-03 04:00:17,623 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.32) internal successors, (33), 24 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2022-11-03 04:00:17,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:00:17,624 INFO L225 Difference]: With dead ends: 102 [2022-11-03 04:00:17,624 INFO L226 Difference]: Without dead ends: 75 [2022-11-03 04:00:17,625 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=314, Invalid=498, Unknown=0, NotChecked=0, Total=812 [2022-11-03 04:00:17,626 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 04:00:17,626 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 32 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [138 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 04:00:17,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2022-11-03 04:00:17,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2022-11-03 04:00:17,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 74 states have (on average 1.054054054054054) internal successors, (78), 74 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:00:17,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 78 transitions. [2022-11-03 04:00:17,637 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 78 transitions. Word has length 37 [2022-11-03 04:00:17,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:00:17,638 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 78 transitions. [2022-11-03 04:00:17,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.32) internal successors, (33), 24 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:00:17,638 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 78 transitions. [2022-11-03 04:00:17,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-03 04:00:17,640 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:00:17,640 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:00:17,689 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0ab28c-2607-4cbb-b8fa-7aaf6961dca2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-03 04:00:17,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0ab28c-2607-4cbb-b8fa-7aaf6961dca2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:00:17,869 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:00:17,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:00:17,869 INFO L85 PathProgramCache]: Analyzing trace with hash -60677844, now seen corresponding path program 4 times [2022-11-03 04:00:17,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:00:17,870 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627146061] [2022-11-03 04:00:17,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:00:17,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:00:18,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:00:19,796 INFO L134 CoverageAnalysis]: Checked inductivity of 759 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 506 trivial. 0 not checked. [2022-11-03 04:00:19,796 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:00:19,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627146061] [2022-11-03 04:00:19,796 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627146061] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 04:00:19,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [941610653] [2022-11-03 04:00:19,797 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-03 04:00:19,797 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:00:19,797 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0ab28c-2607-4cbb-b8fa-7aaf6961dca2/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:00:19,801 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0ab28c-2607-4cbb-b8fa-7aaf6961dca2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 04:00:19,832 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0ab28c-2607-4cbb-b8fa-7aaf6961dca2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-03 04:00:20,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:00:20,248 INFO L263 TraceCheckSpWp]: Trace formula consists of 1140 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-03 04:00:20,252 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:00:20,331 INFO L134 CoverageAnalysis]: Checked inductivity of 759 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 506 trivial. 0 not checked. [2022-11-03 04:00:20,331 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:00:21,461 INFO L134 CoverageAnalysis]: Checked inductivity of 759 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 506 trivial. 0 not checked. [2022-11-03 04:00:21,462 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [941610653] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 04:00:21,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1346428073] [2022-11-03 04:00:21,465 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-03 04:00:21,465 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 04:00:21,466 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 04:00:21,466 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 04:00:21,466 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 04:00:21,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:00:21,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:00:21,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:00:21,568 INFO L356 Elim1Store]: treesize reduction 83, result has 23.9 percent of original size [2022-11-03 04:00:21,568 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 7 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 23 treesize of output 42 [2022-11-03 04:00:21,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:00:21,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:00:21,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:00:21,698 INFO L356 Elim1Store]: treesize reduction 129, result has 17.8 percent of original size [2022-11-03 04:00:21,699 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 11 case distinctions, treesize of input 55 treesize of output 73 [2022-11-03 04:00:21,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:00:21,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:00:21,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:00:21,759 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 13 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 109 treesize of output 57 [2022-11-03 04:00:21,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:00:21,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:00:21,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:00:21,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:00:21,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:00:21,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:00:21,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:00:21,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:00:21,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:00:21,920 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:00:21,921 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:00:21,926 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:00:21,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:00:21,929 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:00:22,027 INFO L356 Elim1Store]: treesize reduction 264, result has 10.8 percent of original size [2022-11-03 04:00:22,028 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 12 case distinctions, treesize of input 452 treesize of output 374 [2022-11-03 04:00:22,129 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:00:22,130 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:00:22,169 INFO L356 Elim1Store]: treesize reduction 54, result has 40.0 percent of original size [2022-11-03 04:00:22,169 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 2 case distinctions, treesize of input 94 treesize of output 48 [2022-11-03 04:00:22,208 INFO L356 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-03 04:00:22,209 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-11-03 04:00:22,247 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:00:22,248 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:00:22,394 INFO L356 Elim1Store]: treesize reduction 89, result has 36.4 percent of original size [2022-11-03 04:00:22,394 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 82 treesize of output 111 [2022-11-03 04:00:22,499 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:00:22,511 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 04:00:22,512 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-11-03 04:00:22,542 INFO L356 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-03 04:00:22,542 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-11-03 04:00:22,577 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:00:22,579 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:00:22,580 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:00:22,750 INFO L356 Elim1Store]: treesize reduction 261, result has 26.1 percent of original size [2022-11-03 04:00:22,750 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 14 case distinctions, treesize of input 127 treesize of output 198 [2022-11-03 04:00:22,912 INFO L356 Elim1Store]: treesize reduction 12, result has 60.0 percent of original size [2022-11-03 04:00:22,913 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 343 treesize of output 338 [2022-11-03 04:00:22,950 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 04:00:22,950 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 297 treesize of output 298 [2022-11-03 04:00:23,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:00:23,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:00:23,213 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:00:23,214 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 602 treesize of output 546 [2022-11-03 04:00:24,340 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:00:24,353 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 04:00:24,354 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-11-03 04:00:24,363 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:00:24,378 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 04:00:24,378 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-11-03 04:00:24,395 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 04:00:24,695 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1582#(and (<= 0 |ULTIMATE.start_main_~#a1~0#1.base|) (<= 200000 |ULTIMATE.start_main_~i~0#1|) (= |ULTIMATE.start_main_~#a3~0#1.offset| 0) (= |ULTIMATE.start_main_~#a1~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 |ULTIMATE.start_main_~#a2~0#1.base|) (= |ULTIMATE.start_main_#t~mem11#1| (select (select |#memory_int| |ULTIMATE.start_main_~#a1~0#1.base|) (+ |ULTIMATE.start_main_~#a1~0#1.offset| (* |ULTIMATE.start_main_~x~0#1| 4)))) (<= 0 |ULTIMATE.start_main_~#a3~0#1.base|) (= |ULTIMATE.start_main_~#a2~0#1.offset| 0) (= (select (select |#memory_int| |ULTIMATE.start_main_~#a3~0#1.base|) (+ |ULTIMATE.start_main_~#a3~0#1.offset| (* |ULTIMATE.start_main_~x~0#1| 4))) |ULTIMATE.start_main_#t~mem12#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (= |ULTIMATE.start_main_~x~0#1| 0) (<= 0 |#StackHeapBarrier|) (= 150000 |ULTIMATE.start_main_~z~0#1|) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (= |ULTIMATE.start_main_#t~mem12#1| |ULTIMATE.start_main_#t~mem11#1|) 1 0)) (= |#NULL.base| 0))' at error location [2022-11-03 04:00:24,695 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 04:00:24,695 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 04:00:24,696 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 48 [2022-11-03 04:00:24,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504951365] [2022-11-03 04:00:24,696 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 04:00:24,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-11-03 04:00:24,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:00:24,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-11-03 04:00:24,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1190, Invalid=1566, Unknown=0, NotChecked=0, Total=2756 [2022-11-03 04:00:24,700 INFO L87 Difference]: Start difference. First operand 75 states and 78 transitions. Second operand has 49 states, 49 states have (on average 1.163265306122449) internal successors, (57), 48 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:00:25,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:00:25,411 INFO L93 Difference]: Finished difference Result 198 states and 275 transitions. [2022-11-03 04:00:25,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-11-03 04:00:25,412 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 1.163265306122449) internal successors, (57), 48 states have internal predecessors, (57), 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 73 [2022-11-03 04:00:25,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:00:25,413 INFO L225 Difference]: With dead ends: 198 [2022-11-03 04:00:25,413 INFO L226 Difference]: Without dead ends: 147 [2022-11-03 04:00:25,415 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 364 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1190, Invalid=1566, Unknown=0, NotChecked=0, Total=2756 [2022-11-03 04:00:25,415 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 425 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 582 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 425 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-03 04:00:25,416 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 20 Invalid, 582 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [425 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-03 04:00:25,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2022-11-03 04:00:25,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2022-11-03 04:00:25,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 146 states have (on average 1.0273972602739727) internal successors, (150), 146 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:00:25,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 150 transitions. [2022-11-03 04:00:25,438 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 150 transitions. Word has length 73 [2022-11-03 04:00:25,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:00:25,439 INFO L495 AbstractCegarLoop]: Abstraction has 147 states and 150 transitions. [2022-11-03 04:00:25,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 1.163265306122449) internal successors, (57), 48 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:00:25,439 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 150 transitions. [2022-11-03 04:00:25,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-11-03 04:00:25,444 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:00:25,444 INFO L195 NwaCegarLoop]: trace histogram [46, 46, 46, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:00:25,489 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0ab28c-2607-4cbb-b8fa-7aaf6961dca2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-03 04:00:25,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0ab28c-2607-4cbb-b8fa-7aaf6961dca2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:00:25,657 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:00:25,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:00:25,657 INFO L85 PathProgramCache]: Analyzing trace with hash -186099028, now seen corresponding path program 5 times [2022-11-03 04:00:25,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:00:25,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813895706] [2022-11-03 04:00:25,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:00:25,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:00:25,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:00:31,830 INFO L134 CoverageAnalysis]: Checked inductivity of 3243 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 2162 trivial. 0 not checked. [2022-11-03 04:00:31,830 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:00:31,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813895706] [2022-11-03 04:00:31,831 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813895706] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 04:00:31,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1138682766] [2022-11-03 04:00:31,831 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-03 04:00:31,831 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:00:31,831 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0ab28c-2607-4cbb-b8fa-7aaf6961dca2/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:00:31,833 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0ab28c-2607-4cbb-b8fa-7aaf6961dca2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 04:00:31,846 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0ab28c-2607-4cbb-b8fa-7aaf6961dca2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process