./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsaR_p04.c --full-output --architecture 64bit -------------------------------------------------------------------------------- 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_28251a61-142e-4159-b33a-5b5ba8e01b52/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28251a61-142e-4159-b33a-5b5ba8e01b52/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_28251a61-142e-4159-b33a-5b5ba8e01b52/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28251a61-142e-4159-b33a-5b5ba8e01b52/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsaR_p04.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28251a61-142e-4159-b33a-5b5ba8e01b52/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28251a61-142e-4159-b33a-5b5ba8e01b52/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 64bit --witnessprinter.graph.data.programhash cd96e0219f5c367576fbd54c644e4c7642dcebe67747e9fbd5a25075ee4f799f --- 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 02:34:50,620 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 02:34:50,622 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 02:34:50,648 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 02:34:50,649 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 02:34:50,650 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 02:34:50,651 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 02:34:50,653 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 02:34:50,655 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 02:34:50,656 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 02:34:50,657 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 02:34:50,658 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 02:34:50,659 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 02:34:50,660 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 02:34:50,661 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 02:34:50,662 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 02:34:50,663 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 02:34:50,664 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 02:34:50,666 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 02:34:50,667 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 02:34:50,669 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 02:34:50,670 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 02:34:50,672 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 02:34:50,672 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 02:34:50,676 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 02:34:50,676 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 02:34:50,677 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 02:34:50,678 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 02:34:50,678 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 02:34:50,679 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 02:34:50,680 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 02:34:50,681 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 02:34:50,682 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 02:34:50,682 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 02:34:50,684 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 02:34:50,684 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 02:34:50,685 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 02:34:50,685 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 02:34:50,685 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 02:34:50,686 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 02:34:50,687 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 02:34:50,688 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28251a61-142e-4159-b33a-5b5ba8e01b52/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-03 02:34:50,709 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 02:34:50,709 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 02:34:50,710 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 02:34:50,710 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 02:34:50,711 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 02:34:50,711 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 02:34:50,711 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 02:34:50,711 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 02:34:50,712 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 02:34:50,712 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 02:34:50,712 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 02:34:50,712 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 02:34:50,713 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 02:34:50,713 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 02:34:50,713 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 02:34:50,713 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 02:34:50,714 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 02:34:50,714 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 02:34:50,715 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 02:34:50,715 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 02:34:50,715 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 02:34:50,716 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 02:34:50,716 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 02:34:50,716 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 02:34:50,716 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 02:34:50,717 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 02:34:50,717 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 02:34:50,717 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 02:34:50,717 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 02:34:50,718 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:34:50,718 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 02:34:50,718 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 02:34:50,719 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 02:34:50,719 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 02:34:50,719 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 02:34:50,719 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 02:34:50,719 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 02:34:50,720 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 02:34:50,720 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_28251a61-142e-4159-b33a-5b5ba8e01b52/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28251a61-142e-4159-b33a-5b5ba8e01b52/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cd96e0219f5c367576fbd54c644e4c7642dcebe67747e9fbd5a25075ee4f799f [2022-11-03 02:34:50,990 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 02:34:51,010 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 02:34:51,012 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 02:34:51,013 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 02:34:51,014 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 02:34:51,015 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28251a61-142e-4159-b33a-5b5ba8e01b52/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsaR_p04.c [2022-11-03 02:34:51,092 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28251a61-142e-4159-b33a-5b5ba8e01b52/bin/utaipan-7li7fVZpFI/data/1725650dc/45b54b70b6af48fd8bdd9107b8fd6ad3/FLAGf56bca476 [2022-11-03 02:34:51,554 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 02:34:51,554 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28251a61-142e-4159-b33a-5b5ba8e01b52/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsaR_p04.c [2022-11-03 02:34:51,566 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28251a61-142e-4159-b33a-5b5ba8e01b52/bin/utaipan-7li7fVZpFI/data/1725650dc/45b54b70b6af48fd8bdd9107b8fd6ad3/FLAGf56bca476 [2022-11-03 02:34:51,946 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28251a61-142e-4159-b33a-5b5ba8e01b52/bin/utaipan-7li7fVZpFI/data/1725650dc/45b54b70b6af48fd8bdd9107b8fd6ad3 [2022-11-03 02:34:51,950 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 02:34:51,952 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 02:34:51,956 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 02:34:51,956 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 02:34:51,960 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 02:34:51,961 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:34:51" (1/1) ... [2022-11-03 02:34:51,963 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@214fbc33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:34:51, skipping insertion in model container [2022-11-03 02:34:51,963 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:34:51" (1/1) ... [2022-11-03 02:34:51,970 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 02:34:51,999 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:34:52,197 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_28251a61-142e-4159-b33a-5b5ba8e01b52/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsaR_p04.c[1107,1120] [2022-11-03 02:34:52,277 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:34:52,280 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 02:34:52,297 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_28251a61-142e-4159-b33a-5b5ba8e01b52/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsaR_p04.c[1107,1120] [2022-11-03 02:34:52,341 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:34:52,354 INFO L208 MainTranslator]: Completed translation [2022-11-03 02:34:52,354 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:34:52 WrapperNode [2022-11-03 02:34:52,354 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 02:34:52,356 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 02:34:52,356 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 02:34:52,356 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 02:34:52,363 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:34:52" (1/1) ... [2022-11-03 02:34:52,381 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:34:52" (1/1) ... [2022-11-03 02:34:52,422 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 118 [2022-11-03 02:34:52,424 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 02:34:52,425 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 02:34:52,426 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 02:34:52,426 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 02:34:52,435 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:34:52" (1/1) ... [2022-11-03 02:34:52,436 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:34:52" (1/1) ... [2022-11-03 02:34:52,444 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:34:52" (1/1) ... [2022-11-03 02:34:52,444 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:34:52" (1/1) ... [2022-11-03 02:34:52,459 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:34:52" (1/1) ... [2022-11-03 02:34:52,469 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:34:52" (1/1) ... [2022-11-03 02:34:52,470 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:34:52" (1/1) ... [2022-11-03 02:34:52,477 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:34:52" (1/1) ... [2022-11-03 02:34:52,479 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 02:34:52,480 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 02:34:52,480 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 02:34:52,480 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 02:34:52,487 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:34:52" (1/1) ... [2022-11-03 02:34:52,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:34:52,503 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28251a61-142e-4159-b33a-5b5ba8e01b52/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:34:52,514 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28251a61-142e-4159-b33a-5b5ba8e01b52/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 02:34:52,546 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28251a61-142e-4159-b33a-5b5ba8e01b52/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 02:34:52,563 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 02:34:52,563 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 02:34:52,666 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 02:34:52,668 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 02:34:52,922 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 02:34:52,957 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 02:34:52,957 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-03 02:34:52,959 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:34:52 BoogieIcfgContainer [2022-11-03 02:34:52,960 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 02:34:52,962 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 02:34:52,962 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 02:34:52,966 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 02:34:52,966 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:34:51" (1/3) ... [2022-11-03 02:34:52,967 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d5fd98a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:34:52, skipping insertion in model container [2022-11-03 02:34:52,967 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:34:52" (2/3) ... [2022-11-03 02:34:52,968 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d5fd98a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:34:52, skipping insertion in model container [2022-11-03 02:34:52,968 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:34:52" (3/3) ... [2022-11-03 02:34:52,969 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.vis_arrays_vsaR_p04.c [2022-11-03 02:34:52,987 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 02:34:52,987 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 02:34:53,047 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:34:53,054 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;@67e6c75e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:34:53,060 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 02:34:53,063 INFO L276 IsEmpty]: Start isEmpty. Operand has 7 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:34:53,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-03 02:34:53,069 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:34:53,070 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-03 02:34:53,071 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:34:53,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:34:53,076 INFO L85 PathProgramCache]: Analyzing trace with hash 2035816, now seen corresponding path program 1 times [2022-11-03 02:34:53,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:34:53,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183565249] [2022-11-03 02:34:53,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:34:53,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:34:53,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-03 02:34:53,361 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-03 02:34:53,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-03 02:34:53,580 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-03 02:34:53,584 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-03 02:34:53,586 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-03 02:34:53,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 02:34:53,593 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-03 02:34:53,597 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-03 02:34:53,627 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-03 02:34:53,637 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 02:34:53 BoogieIcfgContainer [2022-11-03 02:34:53,637 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-03 02:34:53,638 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-03 02:34:53,638 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-03 02:34:53,638 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-03 02:34:53,642 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:34:52" (3/4) ... [2022-11-03 02:34:53,646 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-03 02:34:53,646 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-03 02:34:53,648 INFO L158 Benchmark]: Toolchain (without parser) took 1696.79ms. Allocated memory is still 130.0MB. Free memory was 95.9MB in the beginning and 102.5MB in the end (delta: -6.7MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 02:34:53,649 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 88.1MB. Free memory was 41.6MB in the beginning and 41.5MB in the end (delta: 77.0kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 02:34:53,650 INFO L158 Benchmark]: CACSL2BoogieTranslator took 398.69ms. Allocated memory is still 130.0MB. Free memory was 95.9MB in the beginning and 105.0MB in the end (delta: -9.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-03 02:34:53,651 INFO L158 Benchmark]: Boogie Procedure Inliner took 68.79ms. Allocated memory is still 130.0MB. Free memory was 105.0MB in the beginning and 102.6MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-03 02:34:53,652 INFO L158 Benchmark]: Boogie Preprocessor took 54.06ms. Allocated memory is still 130.0MB. Free memory was 102.6MB in the beginning and 101.3MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-03 02:34:53,658 INFO L158 Benchmark]: RCFGBuilder took 479.81ms. Allocated memory is still 130.0MB. Free memory was 101.3MB in the beginning and 82.0MB in the end (delta: 19.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-11-03 02:34:53,658 INFO L158 Benchmark]: TraceAbstraction took 675.17ms. Allocated memory is still 130.0MB. Free memory was 81.6MB in the beginning and 103.2MB in the end (delta: -21.6MB). Peak memory consumption was 35.0MB. Max. memory is 16.1GB. [2022-11-03 02:34:53,660 INFO L158 Benchmark]: Witness Printer took 9.66ms. Allocated memory is still 130.0MB. Free memory was 103.2MB in the beginning and 102.5MB in the end (delta: 653.2kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 02:34:53,670 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 88.1MB. Free memory was 41.6MB in the beginning and 41.5MB in the end (delta: 77.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 398.69ms. Allocated memory is still 130.0MB. Free memory was 95.9MB in the beginning and 105.0MB in the end (delta: -9.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 68.79ms. Allocated memory is still 130.0MB. Free memory was 105.0MB in the beginning and 102.6MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 54.06ms. Allocated memory is still 130.0MB. Free memory was 102.6MB in the beginning and 101.3MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 479.81ms. Allocated memory is still 130.0MB. Free memory was 101.3MB in the beginning and 82.0MB in the end (delta: 19.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 675.17ms. Allocated memory is still 130.0MB. Free memory was 81.6MB in the beginning and 103.2MB in the end (delta: -21.6MB). Peak memory consumption was 35.0MB. Max. memory is 16.1GB. * Witness Printer took 9.66ms. Allocated memory is still 130.0MB. Free memory was 103.2MB in the beginning and 102.5MB in the end (delta: 653.2kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 20]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseComplement at line 102, overapproximation of bitwiseOr at line 100, overapproximation of bitwiseAnd at line 88. Possible FailurePath: [L25] const SORT_1 mask_SORT_1 = (SORT_1)-1 >> (sizeof(SORT_1) * 8 - 1); [L26] const SORT_1 msb_SORT_1 = (SORT_1)1 << (1 - 1); [L28] const SORT_3 mask_SORT_3 = (SORT_3)-1 >> (sizeof(SORT_3) * 8 - 5); [L29] const SORT_3 msb_SORT_3 = (SORT_3)1 << (5 - 1); [L31] const SORT_5 mask_SORT_5 = (SORT_5)-1 >> (sizeof(SORT_5) * 8 - 12); [L32] const SORT_5 msb_SORT_5 = (SORT_5)1 << (12 - 1); [L34] const SORT_7 mask_SORT_7 = (SORT_7)-1 >> (sizeof(SORT_7) * 8 - 3); [L35] const SORT_7 msb_SORT_7 = (SORT_7)1 << (3 - 1); [L37] const SORT_14 mask_SORT_14 = (SORT_14)-1 >> (sizeof(SORT_14) * 8 - 2); [L38] const SORT_14 msb_SORT_14 = (SORT_14)1 << (2 - 1); [L40] const SORT_7 var_8 = 0; [L41] const SORT_1 var_12 = 0; [L42] const SORT_14 var_16 = 0; [L43] const SORT_1 var_21 = 1; [L44] const SORT_7 var_50 = 1; [L45] const SORT_7 var_52 = 4; [L47] SORT_1 input_2; [L48] SORT_3 input_4; [L49] SORT_5 input_6; [L50] SORT_3 input_25; [L51] SORT_3 input_27; [L52] SORT_3 input_29; [L53] SORT_1 input_31; [L54] SORT_5 input_33; [L55] SORT_3 input_35; [L56] SORT_3 input_37; [L57] SORT_3 input_39; [L58] SORT_3 input_41; [L59] SORT_3 input_43; [L60] SORT_3 input_45; [L61] SORT_3 input_47; [L63] SORT_7 state_9 = __VERIFIER_nondet_uchar() & mask_SORT_7; [L65] SORT_7 init_10_arg_1 = var_8; [L66] state_9 = init_10_arg_1 VAL [init_10_arg_1=0, mask_SORT_1=1, mask_SORT_14=3, mask_SORT_3=31, mask_SORT_5=4095, mask_SORT_7=7, msb_SORT_1=1, msb_SORT_14=2, msb_SORT_3=16, msb_SORT_5=2048, msb_SORT_7=4, state_9=0, var_12=0, var_16=0, var_21=1, var_50=1, var_52=4, var_8=0] [L69] input_2 = __VERIFIER_nondet_uchar() [L70] input_4 = __VERIFIER_nondet_uchar() [L71] input_6 = __VERIFIER_nondet_ushort() [L72] input_25 = __VERIFIER_nondet_uchar() [L73] input_27 = __VERIFIER_nondet_uchar() [L74] input_29 = __VERIFIER_nondet_uchar() [L75] input_31 = __VERIFIER_nondet_uchar() [L76] input_33 = __VERIFIER_nondet_ushort() [L77] input_35 = __VERIFIER_nondet_uchar() [L78] input_37 = __VERIFIER_nondet_uchar() [L79] input_39 = __VERIFIER_nondet_uchar() [L80] input_41 = __VERIFIER_nondet_uchar() [L81] input_43 = __VERIFIER_nondet_uchar() [L82] input_45 = __VERIFIER_nondet_uchar() [L83] input_47 = __VERIFIER_nondet_uchar() [L86] SORT_7 var_11_arg_0 = state_9; [L87] SORT_1 var_11 = var_11_arg_0 >> 2; [L88] var_11 = var_11 & mask_SORT_1 [L89] SORT_1 var_13_arg_0 = var_11; [L90] SORT_1 var_13_arg_1 = var_12; [L91] SORT_1 var_13 = var_13_arg_0 == var_13_arg_1; [L92] SORT_7 var_15_arg_0 = state_9; [L93] SORT_14 var_15 = var_15_arg_0 >> 0; [L94] var_15 = var_15 & mask_SORT_14 [L95] SORT_14 var_17_arg_0 = var_15; [L96] SORT_14 var_17_arg_1 = var_16; [L97] SORT_1 var_17 = var_17_arg_0 == var_17_arg_1; [L98] SORT_1 var_18_arg_0 = var_13; [L99] SORT_1 var_18_arg_1 = var_17; [L100] SORT_1 var_18 = var_18_arg_0 | var_18_arg_1; [L101] SORT_1 var_22_arg_0 = var_18; [L102] SORT_1 var_22 = ~var_22_arg_0; [L103] SORT_1 var_23_arg_0 = var_21; [L104] SORT_1 var_23_arg_1 = var_22; [L105] SORT_1 var_23 = var_23_arg_0 & var_23_arg_1; [L106] var_23 = var_23 & mask_SORT_1 [L107] SORT_1 bad_24_arg_0 = var_23; [L108] CALL __VERIFIER_assert(!(bad_24_arg_0)) [L20] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L20] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.6s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-03 02:34:53,708 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28251a61-142e-4159-b33a-5b5ba8e01b52/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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_28251a61-142e-4159-b33a-5b5ba8e01b52/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28251a61-142e-4159-b33a-5b5ba8e01b52/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_28251a61-142e-4159-b33a-5b5ba8e01b52/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28251a61-142e-4159-b33a-5b5ba8e01b52/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsaR_p04.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28251a61-142e-4159-b33a-5b5ba8e01b52/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28251a61-142e-4159-b33a-5b5ba8e01b52/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 64bit --witnessprinter.graph.data.programhash cd96e0219f5c367576fbd54c644e4c7642dcebe67747e9fbd5a25075ee4f799f --- 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 02:34:55,977 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 02:34:55,979 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 02:34:56,015 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 02:34:56,016 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 02:34:56,019 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 02:34:56,021 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 02:34:56,026 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 02:34:56,032 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 02:34:56,039 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 02:34:56,040 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 02:34:56,041 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 02:34:56,042 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 02:34:56,044 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 02:34:56,046 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 02:34:56,047 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 02:34:56,049 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 02:34:56,050 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 02:34:56,052 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 02:34:56,057 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 02:34:56,065 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 02:34:56,066 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 02:34:56,067 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 02:34:56,068 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 02:34:56,071 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 02:34:56,072 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 02:34:56,072 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 02:34:56,073 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 02:34:56,073 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 02:34:56,074 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 02:34:56,074 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 02:34:56,075 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 02:34:56,076 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 02:34:56,076 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 02:34:56,077 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 02:34:56,077 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 02:34:56,083 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 02:34:56,084 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 02:34:56,084 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 02:34:56,085 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 02:34:56,085 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 02:34:56,088 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28251a61-142e-4159-b33a-5b5ba8e01b52/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2022-11-03 02:34:56,124 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 02:34:56,125 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 02:34:56,125 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 02:34:56,125 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 02:34:56,126 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 02:34:56,126 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 02:34:56,127 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 02:34:56,127 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 02:34:56,127 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 02:34:56,127 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 02:34:56,128 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 02:34:56,128 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 02:34:56,130 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 02:34:56,130 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 02:34:56,130 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 02:34:56,130 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 02:34:56,131 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 02:34:56,131 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-03 02:34:56,131 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-03 02:34:56,131 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-03 02:34:56,131 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 02:34:56,131 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 02:34:56,132 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 02:34:56,132 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 02:34:56,132 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-03 02:34:56,132 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 02:34:56,132 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:34:56,133 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 02:34:56,133 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 02:34:56,133 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 02:34:56,133 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-03 02:34:56,133 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-03 02:34:56,134 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 02:34:56,134 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 02:34:56,134 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-03 02:34:56,135 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_28251a61-142e-4159-b33a-5b5ba8e01b52/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28251a61-142e-4159-b33a-5b5ba8e01b52/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cd96e0219f5c367576fbd54c644e4c7642dcebe67747e9fbd5a25075ee4f799f [2022-11-03 02:34:56,530 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 02:34:56,558 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 02:34:56,562 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 02:34:56,564 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 02:34:56,564 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 02:34:56,566 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28251a61-142e-4159-b33a-5b5ba8e01b52/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsaR_p04.c [2022-11-03 02:34:56,643 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28251a61-142e-4159-b33a-5b5ba8e01b52/bin/utaipan-7li7fVZpFI/data/3903e6847/22581be8a485452db5e679ab13e4e46b/FLAGf220fe635 [2022-11-03 02:34:57,192 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 02:34:57,192 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28251a61-142e-4159-b33a-5b5ba8e01b52/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsaR_p04.c [2022-11-03 02:34:57,201 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28251a61-142e-4159-b33a-5b5ba8e01b52/bin/utaipan-7li7fVZpFI/data/3903e6847/22581be8a485452db5e679ab13e4e46b/FLAGf220fe635 [2022-11-03 02:34:57,545 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28251a61-142e-4159-b33a-5b5ba8e01b52/bin/utaipan-7li7fVZpFI/data/3903e6847/22581be8a485452db5e679ab13e4e46b [2022-11-03 02:34:57,550 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 02:34:57,551 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 02:34:57,552 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 02:34:57,552 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 02:34:57,562 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 02:34:57,563 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:34:57" (1/1) ... [2022-11-03 02:34:57,565 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36ec121f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:34:57, skipping insertion in model container [2022-11-03 02:34:57,565 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:34:57" (1/1) ... [2022-11-03 02:34:57,573 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 02:34:57,601 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:34:57,745 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_28251a61-142e-4159-b33a-5b5ba8e01b52/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsaR_p04.c[1107,1120] [2022-11-03 02:34:57,829 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:34:57,833 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 02:34:57,844 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_28251a61-142e-4159-b33a-5b5ba8e01b52/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsaR_p04.c[1107,1120] [2022-11-03 02:34:57,879 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:34:57,891 INFO L208 MainTranslator]: Completed translation [2022-11-03 02:34:57,892 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:34:57 WrapperNode [2022-11-03 02:34:57,892 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 02:34:57,893 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 02:34:57,893 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 02:34:57,894 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 02:34:57,900 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:34:57" (1/1) ... [2022-11-03 02:34:57,908 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:34:57" (1/1) ... [2022-11-03 02:34:57,929 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 118 [2022-11-03 02:34:57,930 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 02:34:57,930 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 02:34:57,931 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 02:34:57,931 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 02:34:57,939 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:34:57" (1/1) ... [2022-11-03 02:34:57,939 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:34:57" (1/1) ... [2022-11-03 02:34:57,942 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:34:57" (1/1) ... [2022-11-03 02:34:57,943 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:34:57" (1/1) ... [2022-11-03 02:34:57,948 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:34:57" (1/1) ... [2022-11-03 02:34:57,952 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:34:57" (1/1) ... [2022-11-03 02:34:57,953 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:34:57" (1/1) ... [2022-11-03 02:34:57,954 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:34:57" (1/1) ... [2022-11-03 02:34:57,957 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 02:34:57,957 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 02:34:57,958 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 02:34:57,958 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 02:34:57,959 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:34:57" (1/1) ... [2022-11-03 02:34:57,965 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:34:57,975 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28251a61-142e-4159-b33a-5b5ba8e01b52/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:34:57,986 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28251a61-142e-4159-b33a-5b5ba8e01b52/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 02:34:58,025 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28251a61-142e-4159-b33a-5b5ba8e01b52/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 02:34:58,048 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 02:34:58,049 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 02:34:58,164 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 02:34:58,166 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 02:34:58,383 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 02:34:58,389 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 02:34:58,389 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-03 02:34:58,391 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:34:58 BoogieIcfgContainer [2022-11-03 02:34:58,392 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 02:34:58,394 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 02:34:58,394 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 02:34:58,406 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 02:34:58,418 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:34:57" (1/3) ... [2022-11-03 02:34:58,419 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37164a54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:34:58, skipping insertion in model container [2022-11-03 02:34:58,419 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:34:57" (2/3) ... [2022-11-03 02:34:58,420 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37164a54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:34:58, skipping insertion in model container [2022-11-03 02:34:58,420 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:34:58" (3/3) ... [2022-11-03 02:34:58,421 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.vis_arrays_vsaR_p04.c [2022-11-03 02:34:58,479 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 02:34:58,480 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 02:34:58,552 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:34:58,570 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;@43d5b565, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:34:58,570 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 02:34:58,575 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:34:58,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-03 02:34:58,581 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:34:58,582 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-03 02:34:58,582 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:34:58,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:34:58,590 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2022-11-03 02:34:58,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:34:58,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1627300594] [2022-11-03 02:34:58,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:34:58,606 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:34:58,606 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28251a61-142e-4159-b33a-5b5ba8e01b52/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:34:58,614 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28251a61-142e-4159-b33a-5b5ba8e01b52/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:34:58,630 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28251a61-142e-4159-b33a-5b5ba8e01b52/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-03 02:34:58,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:34:58,758 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-03 02:34:58,764 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:34:58,998 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 02:34:58,998 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:34:58,999 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:34:59,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1627300594] [2022-11-03 02:34:59,000 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1627300594] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:34:59,001 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:34:59,001 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:34:59,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090573309] [2022-11-03 02:34:59,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:34:59,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:34:59,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:34:59,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:34:59,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:34:59,049 INFO L87 Difference]: Start difference. First operand has 13 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:34:59,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:34:59,132 INFO L93 Difference]: Finished difference Result 26 states and 39 transitions. [2022-11-03 02:34:59,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:34:59,145 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-03 02:34:59,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:34:59,155 INFO L225 Difference]: With dead ends: 26 [2022-11-03 02:34:59,155 INFO L226 Difference]: Without dead ends: 15 [2022-11-03 02:34:59,158 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:34:59,161 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 10 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:34:59,169 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 21 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 02:34:59,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-11-03 02:34:59,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 11. [2022-11-03 02:34:59,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:34:59,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2022-11-03 02:34:59,205 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 5 [2022-11-03 02:34:59,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:34:59,205 INFO L495 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions. [2022-11-03 02:34:59,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:34:59,206 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2022-11-03 02:34:59,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-03 02:34:59,207 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:34:59,208 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:34:59,220 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28251a61-142e-4159-b33a-5b5ba8e01b52/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-03 02:34:59,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28251a61-142e-4159-b33a-5b5ba8e01b52/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:34:59,419 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:34:59,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:34:59,420 INFO L85 PathProgramCache]: Analyzing trace with hash -1478823361, now seen corresponding path program 1 times [2022-11-03 02:34:59,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:34:59,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [97577030] [2022-11-03 02:34:59,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:34:59,422 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:34:59,423 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28251a61-142e-4159-b33a-5b5ba8e01b52/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:34:59,424 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28251a61-142e-4159-b33a-5b5ba8e01b52/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:34:59,429 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28251a61-142e-4159-b33a-5b5ba8e01b52/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-03 02:34:59,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:34:59,535 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-03 02:34:59,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:34:59,616 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:34:59,616 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:34:59,616 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:34:59,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [97577030] [2022-11-03 02:34:59,617 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [97577030] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:34:59,618 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:34:59,618 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:34:59,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851825324] [2022-11-03 02:34:59,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:34:59,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:34:59,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:34:59,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:34:59,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:34:59,622 INFO L87 Difference]: Start difference. First operand 11 states and 12 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:34:59,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:34:59,660 INFO L93 Difference]: Finished difference Result 27 states and 30 transitions. [2022-11-03 02:34:59,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:34:59,661 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-03 02:34:59,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:34:59,662 INFO L225 Difference]: With dead ends: 27 [2022-11-03 02:34:59,662 INFO L226 Difference]: Without dead ends: 20 [2022-11-03 02:34:59,663 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:34:59,666 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 9 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:34:59,670 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 21 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 02:34:59,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-11-03 02:34:59,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 13. [2022-11-03 02:34:59,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 12 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:34:59,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2022-11-03 02:34:59,679 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 10 [2022-11-03 02:34:59,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:34:59,681 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2022-11-03 02:34:59,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:34:59,685 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2022-11-03 02:34:59,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-03 02:34:59,686 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:34:59,686 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:34:59,702 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28251a61-142e-4159-b33a-5b5ba8e01b52/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-03 02:34:59,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28251a61-142e-4159-b33a-5b5ba8e01b52/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:34:59,891 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:34:59,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:34:59,892 INFO L85 PathProgramCache]: Analyzing trace with hash -1476976319, now seen corresponding path program 1 times [2022-11-03 02:34:59,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:34:59,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1588447495] [2022-11-03 02:34:59,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:34:59,893 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:34:59,893 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28251a61-142e-4159-b33a-5b5ba8e01b52/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:34:59,894 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28251a61-142e-4159-b33a-5b5ba8e01b52/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:34:59,898 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28251a61-142e-4159-b33a-5b5ba8e01b52/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-03 02:34:59,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:34:59,969 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-03 02:34:59,978 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:35:00,199 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:35:00,200 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:35:00,867 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:35:00,868 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:35:00,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1588447495] [2022-11-03 02:35:00,868 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1588447495] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:35:00,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [295440822] [2022-11-03 02:35:00,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:35:00,872 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:35:00,872 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28251a61-142e-4159-b33a-5b5ba8e01b52/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:35:00,875 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28251a61-142e-4159-b33a-5b5ba8e01b52/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:35:00,894 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28251a61-142e-4159-b33a-5b5ba8e01b52/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2022-11-03 02:35:01,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:35:01,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-03 02:35:01,045 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:35:01,177 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:35:01,177 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:35:01,415 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:35:01,415 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [295440822] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:35:01,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1711836937] [2022-11-03 02:35:01,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:35:01,416 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:35:01,416 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28251a61-142e-4159-b33a-5b5ba8e01b52/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:35:01,420 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28251a61-142e-4159-b33a-5b5ba8e01b52/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:35:01,439 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28251a61-142e-4159-b33a-5b5ba8e01b52/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-03 02:35:01,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:35:01,495 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 32 conjunts are in the unsatisfiable core [2022-11-03 02:35:01,498 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:35:01,668 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:35:01,669 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:35:01,940 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:35:01,940 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1711836937] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:35:01,940 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-03 02:35:01,940 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 7, 8, 8] total 14 [2022-11-03 02:35:01,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848116536] [2022-11-03 02:35:01,941 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-03 02:35:01,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-03 02:35:01,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:35:01,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-03 02:35:01,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2022-11-03 02:35:01,942 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand has 14 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 14 states have internal predecessors, (22), 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 02:35:02,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:35:02,131 INFO L93 Difference]: Finished difference Result 22 states and 24 transitions. [2022-11-03 02:35:02,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-03 02:35:02,132 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 14 states have internal predecessors, (22), 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 02:35:02,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:35:02,135 INFO L225 Difference]: With dead ends: 22 [2022-11-03 02:35:02,135 INFO L226 Difference]: Without dead ends: 20 [2022-11-03 02:35:02,136 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 40 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=88, Invalid=218, Unknown=0, NotChecked=0, Total=306 [2022-11-03 02:35:02,139 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 29 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 35 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:35:02,140 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 38 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 14 Invalid, 0 Unknown, 35 Unchecked, 0.0s Time] [2022-11-03 02:35:02,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-11-03 02:35:02,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 16. [2022-11-03 02:35:02,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:35:02,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2022-11-03 02:35:02,144 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 10 [2022-11-03 02:35:02,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:35:02,145 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2022-11-03 02:35:02,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 14 states have internal predecessors, (22), 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 02:35:02,145 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2022-11-03 02:35:02,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-03 02:35:02,146 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:35:02,146 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2022-11-03 02:35:02,192 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28251a61-142e-4159-b33a-5b5ba8e01b52/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-03 02:35:02,366 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28251a61-142e-4159-b33a-5b5ba8e01b52/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0 [2022-11-03 02:35:02,572 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28251a61-142e-4159-b33a-5b5ba8e01b52/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-03 02:35:02,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28251a61-142e-4159-b33a-5b5ba8e01b52/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28251a61-142e-4159-b33a-5b5ba8e01b52/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28251a61-142e-4159-b33a-5b5ba8e01b52/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:35:02,765 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:35:02,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:35:02,766 INFO L85 PathProgramCache]: Analyzing trace with hash -1952945017, now seen corresponding path program 1 times [2022-11-03 02:35:02,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:35:02,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2037722227] [2022-11-03 02:35:02,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:35:02,767 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:35:02,767 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28251a61-142e-4159-b33a-5b5ba8e01b52/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:35:02,768 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28251a61-142e-4159-b33a-5b5ba8e01b52/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:35:02,772 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28251a61-142e-4159-b33a-5b5ba8e01b52/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-03 02:35:02,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:35:02,857 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-03 02:35:02,859 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:35:02,965 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:35:02,965 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:35:03,084 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:35:03,085 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:35:03,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2037722227] [2022-11-03 02:35:03,085 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2037722227] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:35:03,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [15603666] [2022-11-03 02:35:03,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:35:03,086 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:35:03,086 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28251a61-142e-4159-b33a-5b5ba8e01b52/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:35:03,095 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28251a61-142e-4159-b33a-5b5ba8e01b52/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:35:03,114 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28251a61-142e-4159-b33a-5b5ba8e01b52/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2022-11-03 02:35:03,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:35:03,254 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-03 02:35:03,256 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:35:03,514 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:35:03,514 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:35:03,632 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:35:03,632 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [15603666] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:35:03,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [997397830] [2022-11-03 02:35:03,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:35:03,633 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:35:03,633 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28251a61-142e-4159-b33a-5b5ba8e01b52/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:35:03,636 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28251a61-142e-4159-b33a-5b5ba8e01b52/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:35:03,658 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28251a61-142e-4159-b33a-5b5ba8e01b52/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-03 02:35:03,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:35:03,725 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-03 02:35:03,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:35:03,893 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:35:03,894 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:35:03,932 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:35:03,933 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [997397830] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:35:03,934 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-03 02:35:03,934 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 8, 7, 7, 7] total 24 [2022-11-03 02:35:03,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230560860] [2022-11-03 02:35:03,934 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-03 02:35:03,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-03 02:35:03,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:35:03,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-03 02:35:03,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=457, Unknown=0, NotChecked=0, Total=552 [2022-11-03 02:35:03,937 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand has 24 states, 24 states have (on average 2.0416666666666665) internal successors, (49), 24 states have internal predecessors, (49), 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 02:35:04,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:35:04,228 INFO L93 Difference]: Finished difference Result 38 states and 42 transitions. [2022-11-03 02:35:04,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-03 02:35:04,229 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.0416666666666665) internal successors, (49), 24 states have internal predecessors, (49), 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 15 [2022-11-03 02:35:04,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:35:04,230 INFO L225 Difference]: With dead ends: 38 [2022-11-03 02:35:04,230 INFO L226 Difference]: Without dead ends: 31 [2022-11-03 02:35:04,231 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 213 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=167, Invalid=645, Unknown=0, NotChecked=0, Total=812 [2022-11-03 02:35:04,231 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 44 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 25 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:35:04,232 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 75 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 60 Invalid, 0 Unknown, 25 Unchecked, 0.1s Time] [2022-11-03 02:35:04,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-11-03 02:35:04,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 23. [2022-11-03 02:35:04,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 22 states have internal predecessors, (25), 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 02:35:04,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2022-11-03 02:35:04,239 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 15 [2022-11-03 02:35:04,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:35:04,240 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2022-11-03 02:35:04,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.0416666666666665) internal successors, (49), 24 states have internal predecessors, (49), 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 02:35:04,240 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2022-11-03 02:35:04,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-03 02:35:04,241 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:35:04,241 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1] [2022-11-03 02:35:04,249 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28251a61-142e-4159-b33a-5b5ba8e01b52/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (8)] Forceful destruction successful, exit code 0 [2022-11-03 02:35:04,449 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28251a61-142e-4159-b33a-5b5ba8e01b52/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-03 02:35:04,663 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28251a61-142e-4159-b33a-5b5ba8e01b52/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-03 02:35:04,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28251a61-142e-4159-b33a-5b5ba8e01b52/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28251a61-142e-4159-b33a-5b5ba8e01b52/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28251a61-142e-4159-b33a-5b5ba8e01b52/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:35:04,842 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:35:04,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:35:04,843 INFO L85 PathProgramCache]: Analyzing trace with hash -1951097975, now seen corresponding path program 2 times [2022-11-03 02:35:04,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:35:04,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1097368950] [2022-11-03 02:35:04,844 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-03 02:35:04,844 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:35:04,844 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28251a61-142e-4159-b33a-5b5ba8e01b52/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:35:04,845 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28251a61-142e-4159-b33a-5b5ba8e01b52/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:35:04,848 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28251a61-142e-4159-b33a-5b5ba8e01b52/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-03 02:35:04,940 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-03 02:35:04,940 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 02:35:04,944 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 37 conjunts are in the unsatisfiable core [2022-11-03 02:35:04,947 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:35:05,230 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:35:05,231 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:35:06,218 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:35:06,218 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:35:06,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1097368950] [2022-11-03 02:35:06,219 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1097368950] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:35:06,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1752925775] [2022-11-03 02:35:06,219 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-03 02:35:06,219 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:35:06,220 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28251a61-142e-4159-b33a-5b5ba8e01b52/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:35:06,223 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28251a61-142e-4159-b33a-5b5ba8e01b52/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:35:06,246 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28251a61-142e-4159-b33a-5b5ba8e01b52/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2022-11-03 02:35:06,380 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-03 02:35:06,381 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 02:35:06,385 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 37 conjunts are in the unsatisfiable core [2022-11-03 02:35:06,387 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:35:06,552 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:35:06,552 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:35:06,820 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:35:06,820 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1752925775] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:35:06,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [329162043] [2022-11-03 02:35:06,821 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-03 02:35:06,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:35:06,821 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28251a61-142e-4159-b33a-5b5ba8e01b52/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:35:06,822 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28251a61-142e-4159-b33a-5b5ba8e01b52/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:35:06,852 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28251a61-142e-4159-b33a-5b5ba8e01b52/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-03 02:35:06,910 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-03 02:35:06,911 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 02:35:06,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 40 conjunts are in the unsatisfiable core [2022-11-03 02:35:06,915 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:35:07,145 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:35:07,146 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:35:07,539 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:35:07,539 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [329162043] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:35:07,539 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-03 02:35:07,539 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10, 10, 11, 11] total 20 [2022-11-03 02:35:07,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973382374] [2022-11-03 02:35:07,540 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-03 02:35:07,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-03 02:35:07,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:35:07,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-03 02:35:07,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=319, Unknown=0, NotChecked=0, Total=380 [2022-11-03 02:35:07,543 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand has 20 states, 20 states have (on average 1.6) internal successors, (32), 20 states have internal predecessors, (32), 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 02:35:08,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:35:08,759 INFO L93 Difference]: Finished difference Result 31 states and 34 transitions. [2022-11-03 02:35:08,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-03 02:35:08,759 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.6) internal successors, (32), 20 states have internal predecessors, (32), 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 15 [2022-11-03 02:35:08,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:35:08,760 INFO L225 Difference]: With dead ends: 31 [2022-11-03 02:35:08,760 INFO L226 Difference]: Without dead ends: 29 [2022-11-03 02:35:08,760 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 66 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=200, Invalid=730, Unknown=0, NotChecked=0, Total=930 [2022-11-03 02:35:08,761 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 45 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 120 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:35:08,762 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 59 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 48 Invalid, 0 Unknown, 120 Unchecked, 0.1s Time] [2022-11-03 02:35:08,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-11-03 02:35:08,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 26. [2022-11-03 02:35:08,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.08) internal successors, (27), 25 states have internal predecessors, (27), 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 02:35:08,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2022-11-03 02:35:08,768 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 15 [2022-11-03 02:35:08,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:35:08,769 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2022-11-03 02:35:08,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.6) internal successors, (32), 20 states have internal predecessors, (32), 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 02:35:08,769 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2022-11-03 02:35:08,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-03 02:35:08,770 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:35:08,770 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 3, 1, 1, 1, 1, 1] [2022-11-03 02:35:08,787 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28251a61-142e-4159-b33a-5b5ba8e01b52/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-11-03 02:35:08,984 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28251a61-142e-4159-b33a-5b5ba8e01b52/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2022-11-03 02:35:09,202 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28251a61-142e-4159-b33a-5b5ba8e01b52/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-03 02:35:09,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28251a61-142e-4159-b33a-5b5ba8e01b52/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28251a61-142e-4159-b33a-5b5ba8e01b52/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28251a61-142e-4159-b33a-5b5ba8e01b52/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:35:09,382 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:35:09,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:35:09,383 INFO L85 PathProgramCache]: Analyzing trace with hash 420700039, now seen corresponding path program 2 times [2022-11-03 02:35:09,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:35:09,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1763921165] [2022-11-03 02:35:09,383 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-03 02:35:09,384 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:35:09,384 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28251a61-142e-4159-b33a-5b5ba8e01b52/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:35:09,385 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28251a61-142e-4159-b33a-5b5ba8e01b52/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:35:09,401 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28251a61-142e-4159-b33a-5b5ba8e01b52/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-11-03 02:35:09,498 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-03 02:35:09,498 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 02:35:09,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 35 conjunts are in the unsatisfiable core [2022-11-03 02:35:09,507 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:35:09,902 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 11 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:35:09,902 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:35:10,417 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 11 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:35:10,417 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:35:10,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1763921165] [2022-11-03 02:35:10,417 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1763921165] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:35:10,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1490502083] [2022-11-03 02:35:10,418 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-03 02:35:10,418 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:35:10,426 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28251a61-142e-4159-b33a-5b5ba8e01b52/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:35:10,427 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28251a61-142e-4159-b33a-5b5ba8e01b52/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:35:10,450 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28251a61-142e-4159-b33a-5b5ba8e01b52/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2022-11-03 02:35:10,644 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-03 02:35:10,644 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 02:35:10,647 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-03 02:35:10,650 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:35:11,020 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-03 02:35:11,021 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:35:11,932 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-03 02:35:11,932 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1490502083] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:35:11,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [438084318] [2022-11-03 02:35:11,932 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-03 02:35:11,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:35:11,933 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28251a61-142e-4159-b33a-5b5ba8e01b52/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:35:11,934 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28251a61-142e-4159-b33a-5b5ba8e01b52/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:35:11,958 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28251a61-142e-4159-b33a-5b5ba8e01b52/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-03 02:35:12,047 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-03 02:35:12,047 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 02:35:12,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 35 conjunts are in the unsatisfiable core [2022-11-03 02:35:12,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:35:12,235 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 11 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:35:12,235 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:35:12,336 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 11 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:35:12,336 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [438084318] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:35:12,336 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-03 02:35:12,336 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 7, 7, 13, 13] total 33 [2022-11-03 02:35:12,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178466797] [2022-11-03 02:35:12,337 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-03 02:35:12,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-11-03 02:35:12,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:35:12,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-11-03 02:35:12,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=963, Unknown=0, NotChecked=0, Total=1056 [2022-11-03 02:35:12,342 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand has 33 states, 33 states have (on average 2.0) internal successors, (66), 33 states have internal predecessors, (66), 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 02:35:15,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:35:15,950 INFO L93 Difference]: Finished difference Result 70 states and 79 transitions. [2022-11-03 02:35:15,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-11-03 02:35:15,951 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.0) internal successors, (66), 33 states have internal predecessors, (66), 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 25 [2022-11-03 02:35:15,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:35:15,952 INFO L225 Difference]: With dead ends: 70 [2022-11-03 02:35:15,952 INFO L226 Difference]: Without dead ends: 63 [2022-11-03 02:35:15,954 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 113 SyntacticMatches, 3 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1009 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=795, Invalid=4461, Unknown=0, NotChecked=0, Total=5256 [2022-11-03 02:35:15,955 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 165 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 304 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 82 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-03 02:35:15,955 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 99 Invalid, 477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 304 Invalid, 0 Unknown, 82 Unchecked, 0.5s Time] [2022-11-03 02:35:15,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2022-11-03 02:35:15,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 46. [2022-11-03 02:35:15,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.1333333333333333) internal successors, (51), 45 states have internal predecessors, (51), 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 02:35:15,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 51 transitions. [2022-11-03 02:35:15,968 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 51 transitions. Word has length 25 [2022-11-03 02:35:15,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:35:15,968 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 51 transitions. [2022-11-03 02:35:15,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.0) internal successors, (66), 33 states have internal predecessors, (66), 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 02:35:15,969 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 51 transitions. [2022-11-03 02:35:15,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-03 02:35:15,970 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:35:15,970 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 1, 1, 1, 1] [2022-11-03 02:35:15,994 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28251a61-142e-4159-b33a-5b5ba8e01b52/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-03 02:35:16,186 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28251a61-142e-4159-b33a-5b5ba8e01b52/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-11-03 02:35:16,381 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28251a61-142e-4159-b33a-5b5ba8e01b52/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (14)] Forceful destruction successful, exit code 0 [2022-11-03 02:35:16,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28251a61-142e-4159-b33a-5b5ba8e01b52/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28251a61-142e-4159-b33a-5b5ba8e01b52/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28251a61-142e-4159-b33a-5b5ba8e01b52/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt [2022-11-03 02:35:16,579 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:35:16,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:35:16,579 INFO L85 PathProgramCache]: Analyzing trace with hash 422547081, now seen corresponding path program 3 times [2022-11-03 02:35:16,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:35:16,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [815120137] [2022-11-03 02:35:16,580 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-03 02:35:16,580 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:35:16,580 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28251a61-142e-4159-b33a-5b5ba8e01b52/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:35:16,581 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28251a61-142e-4159-b33a-5b5ba8e01b52/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:35:16,588 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28251a61-142e-4159-b33a-5b5ba8e01b52/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-11-03 02:35:16,676 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-03 02:35:16,676 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 02:35:16,680 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 67 conjunts are in the unsatisfiable core [2022-11-03 02:35:16,683 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:35:17,806 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 3 proven. 20 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-03 02:35:17,806 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:35:50,849 WARN L234 SmtUtils]: Spent 31.29s on a formula simplification. DAG size of input: 117 DAG size of output: 116 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:35:53,646 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-03 02:35:53,646 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:35:53,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [815120137] [2022-11-03 02:35:53,646 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [815120137] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:35:53,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1074690913] [2022-11-03 02:35:53,647 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-03 02:35:53,647 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:35:53,647 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28251a61-142e-4159-b33a-5b5ba8e01b52/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:35:53,651 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28251a61-142e-4159-b33a-5b5ba8e01b52/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:35:53,660 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28251a61-142e-4159-b33a-5b5ba8e01b52/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2022-11-03 02:35:53,810 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-03 02:35:53,810 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 02:35:53,817 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 67 conjunts are in the unsatisfiable core [2022-11-03 02:35:53,819 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:35:55,051 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 3 proven. 20 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-03 02:35:55,051 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:35:58,228 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-03 02:35:58,229 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1074690913] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:35:58,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1044927825] [2022-11-03 02:35:58,229 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-03 02:35:58,229 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:35:58,229 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28251a61-142e-4159-b33a-5b5ba8e01b52/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:35:58,231 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28251a61-142e-4159-b33a-5b5ba8e01b52/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:35:58,242 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28251a61-142e-4159-b33a-5b5ba8e01b52/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-03 02:35:58,329 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-03 02:35:58,329 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 02:35:58,332 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 71 conjunts are in the unsatisfiable core [2022-11-03 02:35:58,335 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:35:59,608 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 5 proven. 20 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-03 02:35:59,609 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:36:14,743 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-03 02:36:14,743 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1044927825] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:36:14,743 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-03 02:36:14,743 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10, 10, 11, 12] total 22 [2022-11-03 02:36:14,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541991136] [2022-11-03 02:36:14,744 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-03 02:36:14,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-03 02:36:14,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:36:14,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-03 02:36:14,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=389, Unknown=5, NotChecked=0, Total=462 [2022-11-03 02:36:14,746 INFO L87 Difference]: Start difference. First operand 46 states and 51 transitions. Second operand has 22 states, 22 states have (on average 1.8636363636363635) internal successors, (41), 22 states have internal predecessors, (41), 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 02:36:16,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:36:16,000 INFO L93 Difference]: Finished difference Result 53 states and 59 transitions. [2022-11-03 02:36:16,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-03 02:36:16,001 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.8636363636363635) internal successors, (41), 22 states have internal predecessors, (41), 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 25 [2022-11-03 02:36:16,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:36:16,001 INFO L225 Difference]: With dead ends: 53 [2022-11-03 02:36:16,001 INFO L226 Difference]: Without dead ends: 51 [2022-11-03 02:36:16,002 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 119 SyntacticMatches, 6 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 46.9s TimeCoverageRelationStatistics Valid=169, Invalid=696, Unknown=5, NotChecked=0, Total=870 [2022-11-03 02:36:16,003 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 8 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 43 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:36:16,003 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 57 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 43 Unchecked, 0.0s Time] [2022-11-03 02:36:16,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2022-11-03 02:36:16,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2022-11-03 02:36:16,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 50 states have (on average 1.08) internal successors, (54), 50 states have internal predecessors, (54), 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 02:36:16,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 54 transitions. [2022-11-03 02:36:16,015 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 54 transitions. Word has length 25 [2022-11-03 02:36:16,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:36:16,016 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 54 transitions. [2022-11-03 02:36:16,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.8636363636363635) internal successors, (41), 22 states have internal predecessors, (41), 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 02:36:16,016 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 54 transitions. [2022-11-03 02:36:16,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-03 02:36:16,017 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:36:16,017 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 5, 1, 1, 1, 1, 1] [2022-11-03 02:36:16,055 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28251a61-142e-4159-b33a-5b5ba8e01b52/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-11-03 02:36:16,246 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28251a61-142e-4159-b33a-5b5ba8e01b52/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-11-03 02:36:16,440 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28251a61-142e-4159-b33a-5b5ba8e01b52/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (17)] Forceful destruction successful, exit code 0 [2022-11-03 02:36:16,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28251a61-142e-4159-b33a-5b5ba8e01b52/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28251a61-142e-4159-b33a-5b5ba8e01b52/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28251a61-142e-4159-b33a-5b5ba8e01b52/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt [2022-11-03 02:36:16,639 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:36:16,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:36:16,639 INFO L85 PathProgramCache]: Analyzing trace with hash -1018962101, now seen corresponding path program 3 times [2022-11-03 02:36:16,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:36:16,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1376301227] [2022-11-03 02:36:16,640 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-03 02:36:16,640 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:36:16,640 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28251a61-142e-4159-b33a-5b5ba8e01b52/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:36:16,641 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28251a61-142e-4159-b33a-5b5ba8e01b52/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:36:16,646 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28251a61-142e-4159-b33a-5b5ba8e01b52/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-11-03 02:36:16,744 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-03 02:36:16,744 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 02:36:16,748 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 32 conjunts are in the unsatisfiable core [2022-11-03 02:36:16,750 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:36:17,643 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-11-03 02:36:17,643 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:36:19,599 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-11-03 02:36:19,599 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:36:19,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1376301227] [2022-11-03 02:36:19,599 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1376301227] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:36:19,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [895500975] [2022-11-03 02:36:19,600 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-03 02:36:19,600 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:36:19,600 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28251a61-142e-4159-b33a-5b5ba8e01b52/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:36:19,603 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28251a61-142e-4159-b33a-5b5ba8e01b52/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:36:19,628 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28251a61-142e-4159-b33a-5b5ba8e01b52/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2022-11-03 02:36:19,781 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-03 02:36:19,781 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 02:36:19,783 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 40 conjunts are in the unsatisfiable core [2022-11-03 02:36:19,785 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:36:21,299 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-11-03 02:36:21,299 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:36:24,294 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-11-03 02:36:24,295 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [895500975] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:36:24,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1952180904] [2022-11-03 02:36:24,295 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-03 02:36:24,295 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:36:24,296 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28251a61-142e-4159-b33a-5b5ba8e01b52/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:36:24,299 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28251a61-142e-4159-b33a-5b5ba8e01b52/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:36:24,322 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28251a61-142e-4159-b33a-5b5ba8e01b52/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-11-03 02:36:24,409 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-03 02:36:24,409 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 02:36:24,411 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 32 conjunts are in the unsatisfiable core [2022-11-03 02:36:24,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:36:24,945 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-11-03 02:36:24,945 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:36:25,719 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-11-03 02:36:25,719 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1952180904] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:36:25,720 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-03 02:36:25,720 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10, 10, 10, 10] total 32 [2022-11-03 02:36:25,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050687024] [2022-11-03 02:36:25,720 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-03 02:36:25,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-03 02:36:25,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:36:25,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-03 02:36:25,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=877, Unknown=0, NotChecked=0, Total=992 [2022-11-03 02:36:25,722 INFO L87 Difference]: Start difference. First operand 51 states and 54 transitions. Second operand has 32 states, 32 states have (on average 2.0) internal successors, (64), 32 states have internal predecessors, (64), 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 02:36:28,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:36:28,943 INFO L93 Difference]: Finished difference Result 76 states and 85 transitions. [2022-11-03 02:36:28,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-03 02:36:28,943 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.0) internal successors, (64), 32 states have internal predecessors, (64), 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 35 [2022-11-03 02:36:28,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:36:28,944 INFO L225 Difference]: With dead ends: 76 [2022-11-03 02:36:28,944 INFO L226 Difference]: Without dead ends: 74 [2022-11-03 02:36:28,945 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 175 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 551 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=535, Invalid=2221, Unknown=0, NotChecked=0, Total=2756 [2022-11-03 02:36:28,946 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 40 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 93 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:36:28,946 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 65 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 38 Invalid, 0 Unknown, 93 Unchecked, 0.1s Time] [2022-11-03 02:36:28,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2022-11-03 02:36:28,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 66. [2022-11-03 02:36:28,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 65 states have (on average 1.1076923076923078) internal successors, (72), 65 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:36:28,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 72 transitions. [2022-11-03 02:36:28,961 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 72 transitions. Word has length 35 [2022-11-03 02:36:28,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:36:28,961 INFO L495 AbstractCegarLoop]: Abstraction has 66 states and 72 transitions. [2022-11-03 02:36:28,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.0) internal successors, (64), 32 states have internal predecessors, (64), 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 02:36:28,962 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 72 transitions. [2022-11-03 02:36:28,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-11-03 02:36:28,963 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:36:28,963 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 9, 9, 8, 1, 1, 1, 1, 1] [2022-11-03 02:36:28,989 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28251a61-142e-4159-b33a-5b5ba8e01b52/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-11-03 02:36:29,182 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28251a61-142e-4159-b33a-5b5ba8e01b52/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-11-03 02:36:29,377 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28251a61-142e-4159-b33a-5b5ba8e01b52/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (20)] Forceful destruction successful, exit code 0 [2022-11-03 02:36:29,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28251a61-142e-4159-b33a-5b5ba8e01b52/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28251a61-142e-4159-b33a-5b5ba8e01b52/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28251a61-142e-4159-b33a-5b5ba8e01b52/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt [2022-11-03 02:36:29,575 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:36:29,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:36:29,575 INFO L85 PathProgramCache]: Analyzing trace with hash -1899906241, now seen corresponding path program 4 times [2022-11-03 02:36:29,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:36:29,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1592443860] [2022-11-03 02:36:29,576 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-03 02:36:29,576 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:36:29,576 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28251a61-142e-4159-b33a-5b5ba8e01b52/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:36:29,577 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28251a61-142e-4159-b33a-5b5ba8e01b52/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:36:29,580 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28251a61-142e-4159-b33a-5b5ba8e01b52/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-11-03 02:36:29,787 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-03 02:36:29,788 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 02:36:29,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 518 conjuncts, 58 conjunts are in the unsatisfiable core [2022-11-03 02:36:29,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:36:32,169 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-11-03 02:36:32,169 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:36:37,436 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-11-03 02:36:37,436 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:36:37,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1592443860] [2022-11-03 02:36:37,437 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1592443860] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:36:37,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1159792051] [2022-11-03 02:36:37,437 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-03 02:36:37,443 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:36:37,443 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28251a61-142e-4159-b33a-5b5ba8e01b52/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:36:37,444 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28251a61-142e-4159-b33a-5b5ba8e01b52/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:36:37,445 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28251a61-142e-4159-b33a-5b5ba8e01b52/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2022-11-03 02:36:37,753 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-03 02:36:37,753 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 02:36:37,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 518 conjuncts, 58 conjunts are in the unsatisfiable core [2022-11-03 02:36:37,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:36:39,030 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-11-03 02:36:39,030 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:36:40,150 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-11-03 02:36:40,150 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1159792051] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:36:40,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [87747215] [2022-11-03 02:36:40,151 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-03 02:36:40,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:36:40,151 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28251a61-142e-4159-b33a-5b5ba8e01b52/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:36:40,155 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28251a61-142e-4159-b33a-5b5ba8e01b52/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:36:40,178 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28251a61-142e-4159-b33a-5b5ba8e01b52/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-11-03 02:36:40,304 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-03 02:36:40,304 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 02:36:40,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 518 conjuncts, 61 conjunts are in the unsatisfiable core [2022-11-03 02:36:40,311 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:36:41,787 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 0 proven. 160 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-11-03 02:36:41,787 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:36:43,358 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 4 proven. 156 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-11-03 02:36:43,359 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [87747215] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:36:43,359 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-03 02:36:43,359 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19, 19, 20, 20] total 38 [2022-11-03 02:36:43,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764203341] [2022-11-03 02:36:43,360 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-03 02:36:43,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-11-03 02:36:43,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:36:43,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-11-03 02:36:43,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=1307, Unknown=0, NotChecked=0, Total=1406 [2022-11-03 02:36:43,362 INFO L87 Difference]: Start difference. First operand 66 states and 72 transitions. Second operand has 38 states, 38 states have (on average 1.7894736842105263) internal successors, (68), 38 states have internal predecessors, (68), 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 02:36:53,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:36:53,892 INFO L93 Difference]: Finished difference Result 105 states and 115 transitions. [2022-11-03 02:36:53,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-11-03 02:36:53,893 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 1.7894736842105263) internal successors, (68), 38 states have internal predecessors, (68), 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 50 [2022-11-03 02:36:53,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:36:53,895 INFO L225 Difference]: With dead ends: 105 [2022-11-03 02:36:53,895 INFO L226 Difference]: Without dead ends: 103 [2022-11-03 02:36:53,897 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 343 GetRequests, 259 SyntacticMatches, 3 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1130 ImplicationChecksByTransitivity, 15.6s TimeCoverageRelationStatistics Valid=867, Invalid=5939, Unknown=0, NotChecked=0, Total=6806 [2022-11-03 02:36:53,898 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 61 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 375 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 1131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 375 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 742 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-03 02:36:53,898 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 107 Invalid, 1131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 375 Invalid, 0 Unknown, 742 Unchecked, 0.9s Time] [2022-11-03 02:36:53,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2022-11-03 02:36:53,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 81. [2022-11-03 02:36:53,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 80 states have (on average 1.15) internal successors, (92), 80 states have internal predecessors, (92), 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 02:36:53,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 92 transitions. [2022-11-03 02:36:53,917 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 92 transitions. Word has length 50 [2022-11-03 02:36:53,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:36:53,918 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 92 transitions. [2022-11-03 02:36:53,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 1.7894736842105263) internal successors, (68), 38 states have internal predecessors, (68), 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 02:36:53,918 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 92 transitions. [2022-11-03 02:36:53,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-11-03 02:36:53,919 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:36:53,919 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 9, 1, 1, 1, 1, 1] [2022-11-03 02:36:53,927 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28251a61-142e-4159-b33a-5b5ba8e01b52/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (23)] Ended with exit code 0 [2022-11-03 02:36:54,144 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28251a61-142e-4159-b33a-5b5ba8e01b52/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-11-03 02:36:54,333 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28251a61-142e-4159-b33a-5b5ba8e01b52/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2022-11-03 02:36:54,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28251a61-142e-4159-b33a-5b5ba8e01b52/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28251a61-142e-4159-b33a-5b5ba8e01b52/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28251a61-142e-4159-b33a-5b5ba8e01b52/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:36:54,524 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:36:54,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:36:54,525 INFO L85 PathProgramCache]: Analyzing trace with hash 437293131, now seen corresponding path program 5 times [2022-11-03 02:36:54,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:36:54,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1235195976] [2022-11-03 02:36:54,525 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-03 02:36:54,525 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:36:54,526 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28251a61-142e-4159-b33a-5b5ba8e01b52/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:36:54,527 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28251a61-142e-4159-b33a-5b5ba8e01b52/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:36:54,534 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28251a61-142e-4159-b33a-5b5ba8e01b52/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-11-03 02:36:54,788 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2022-11-03 02:36:54,788 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 02:36:54,798 INFO L263 TraceCheckSpWp]: Trace formula consists of 569 conjuncts, 54 conjunts are in the unsatisfiable core [2022-11-03 02:36:54,801 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:36:56,853 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 41 proven. 174 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-03 02:36:56,853 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:36:59,726 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 29 proven. 186 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-03 02:36:59,726 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:36:59,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1235195976] [2022-11-03 02:36:59,727 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1235195976] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:36:59,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [348163286] [2022-11-03 02:36:59,727 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-03 02:36:59,727 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:36:59,727 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28251a61-142e-4159-b33a-5b5ba8e01b52/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:36:59,728 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28251a61-142e-4159-b33a-5b5ba8e01b52/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:36:59,729 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28251a61-142e-4159-b33a-5b5ba8e01b52/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (26)] Waiting until timeout for monitored process [2022-11-03 02:37:00,151 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2022-11-03 02:37:00,151 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 02:37:00,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 569 conjuncts, 46 conjunts are in the unsatisfiable core [2022-11-03 02:37:00,173 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:37:01,104 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 29 proven. 174 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-11-03 02:37:01,104 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:37:01,834 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 29 proven. 174 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-11-03 02:37:01,834 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [348163286] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:37:01,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1895786759] [2022-11-03 02:37:01,834 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-03 02:37:01,834 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:37:01,834 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28251a61-142e-4159-b33a-5b5ba8e01b52/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:37:01,835 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28251a61-142e-4159-b33a-5b5ba8e01b52/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:37:01,838 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28251a61-142e-4159-b33a-5b5ba8e01b52/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-11-03 02:37:02,057 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2022-11-03 02:37:02,057 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 02:37:02,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 569 conjuncts, 55 conjunts are in the unsatisfiable core [2022-11-03 02:37:02,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:37:03,049 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 31 proven. 175 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-11-03 02:37:03,049 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:37:03,636 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 31 proven. 175 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-11-03 02:37:03,636 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1895786759] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:37:03,637 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-03 02:37:03,637 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 19, 19, 20, 20] total 43 [2022-11-03 02:37:03,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123319986] [2022-11-03 02:37:03,637 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-03 02:37:03,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-11-03 02:37:03,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:37:03,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-11-03 02:37:03,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=1679, Unknown=0, NotChecked=0, Total=1806 [2022-11-03 02:37:03,639 INFO L87 Difference]: Start difference. First operand 81 states and 92 transitions. Second operand has 43 states, 43 states have (on average 2.1627906976744184) internal successors, (93), 43 states have internal predecessors, (93), 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 02:37:09,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:37:09,157 INFO L93 Difference]: Finished difference Result 122 states and 138 transitions. [2022-11-03 02:37:09,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-03 02:37:09,158 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 2.1627906976744184) internal successors, (93), 43 states have internal predecessors, (93), 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 55 [2022-11-03 02:37:09,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:37:09,159 INFO L225 Difference]: With dead ends: 122 [2022-11-03 02:37:09,159 INFO L226 Difference]: Without dead ends: 0 [2022-11-03 02:37:09,161 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 349 GetRequests, 283 SyntacticMatches, 1 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 552 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=586, Invalid=3836, Unknown=0, NotChecked=0, Total=4422 [2022-11-03 02:37:09,161 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 169 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 751 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 827 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 751 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 5 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-03 02:37:09,162 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 222 Invalid, 827 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 751 Invalid, 0 Unknown, 5 Unchecked, 1.7s Time] [2022-11-03 02:37:09,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-03 02:37:09,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-03 02:37:09,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:37:09,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-03 02:37:09,163 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 55 [2022-11-03 02:37:09,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:37:09,163 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-03 02:37:09,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 2.1627906976744184) internal successors, (93), 43 states have internal predecessors, (93), 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 02:37:09,163 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-03 02:37:09,163 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-03 02:37:09,166 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-03 02:37:09,197 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28251a61-142e-4159-b33a-5b5ba8e01b52/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-11-03 02:37:09,395 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28251a61-142e-4159-b33a-5b5ba8e01b52/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2022-11-03 02:37:09,589 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28251a61-142e-4159-b33a-5b5ba8e01b52/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (26)] Forceful destruction successful, exit code 0 [2022-11-03 02:37:09,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28251a61-142e-4159-b33a-5b5ba8e01b52/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28251a61-142e-4159-b33a-5b5ba8e01b52/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28251a61-142e-4159-b33a-5b5ba8e01b52/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt [2022-11-03 02:37:09,788 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-03 02:37:11,840 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-03 02:37:11,840 INFO L895 garLoopResultBuilder]: At program point L67-2(lines 67 124) the Hoare annotation is: (let ((.cse18 ((_ zero_extend 24) |ULTIMATE.start_main_~var_50~0#1|))) (let ((.cse16 ((_ extract 7 0) .cse18)) (.cse14 ((_ zero_extend 24) |ULTIMATE.start_main_~mask_SORT_7~0#1|))) (let ((.cse15 ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) .cse16))) .cse14)))) (let ((.cse11 ((_ extract 7 0) (bvadd ((_ zero_extend 24) .cse15) .cse18)))) (let ((.cse1 (not (= |ULTIMATE.start___VERIFIER_assert_~cond#1| (_ bv0 32)))) (.cse9 (= |ULTIMATE.start_main_~var_54_arg_0~0#1| (_ bv0 8))) (.cse13 ((_ extract 7 0) (bvand .cse14 ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) .cse11)))))) (.cse0 (= (_ bv1 8) |ULTIMATE.start_main_~mask_SORT_1~0#1|)) (.cse2 (= |ULTIMATE.start_main_~var_16~0#1| (_ bv0 8))) (.cse3 (= (_ bv7 8) |ULTIMATE.start_main_~mask_SORT_7~0#1|)) (.cse4 (= |ULTIMATE.start___VERIFIER_assert_~cond#1| (_ bv1 32))) (.cse5 (= (_ bv3 8) |ULTIMATE.start_main_~mask_SORT_14~0#1|)) (.cse6 (= |ULTIMATE.start_main_~var_54_arg_1~0#1| (_ bv0 8))) (.cse7 (= |ULTIMATE.start_main_~var_8~0#1| (_ bv0 8))) (.cse8 (= (_ bv4 8) |ULTIMATE.start_main_~var_52~0#1|)) (.cse19 (= |ULTIMATE.start_main_~state_9~0#1| (_ bv0 8))) (.cse10 (= (_ bv1 8) |ULTIMATE.start_main_~var_50~0#1|)) (.cse12 (= |ULTIMATE.start_main_~var_12~0#1| (_ bv0 8)))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 (= |ULTIMATE.start_main_~var_54_arg_2~0#1| .cse11) .cse12 (= .cse13 |ULTIMATE.start_main_~state_9~0#1|)) (and .cse0 .cse1 .cse2 (= ((_ extract 7 0) (bvadd ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) (bvadd ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) (bvadd (_ bv1 32) ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse14 (_ bv1 32))))))))) .cse14))) (_ bv1 32)))))) .cse14))) (_ bv1 32))) |ULTIMATE.start_main_~var_54_arg_2~0#1|) .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse12 (= (_ bv4 8) |ULTIMATE.start_main_~state_9~0#1|)) (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 (= .cse15 |ULTIMATE.start_main_~state_9~0#1|) .cse9 .cse10 .cse12 (= .cse16 |ULTIMATE.start_main_~var_54_arg_2~0#1|)) (let ((.cse17 ((_ extract 7 0) (bvadd .cse18 ((_ zero_extend 24) .cse13))))) (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 (= ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) (bvashr ((_ zero_extend 24) |ULTIMATE.start_main_~state_9~0#1|) (_ bv2 32)))) ((_ zero_extend 24) |ULTIMATE.start_main_~mask_SORT_1~0#1|)))) ((_ zero_extend 24) |ULTIMATE.start_main_~var_12~0#1|)) .cse8 (= |ULTIMATE.start_main_~state_9~0#1| ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) .cse17))) .cse14))) .cse9 .cse10 (= |ULTIMATE.start_main_~var_54_arg_2~0#1| .cse17))) (and .cse0 .cse2 .cse3 .cse5 .cse8 (= |ULTIMATE.start_main_~state_9~0#1| |ULTIMATE.start_main_~var_8~0#1|) .cse19 .cse10 .cse12 (= (_ bv1 8) |ULTIMATE.start_main_~var_21~0#1|)) (and .cse0 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse19 .cse10 (= (_ bv1 8) |ULTIMATE.start_main_~var_54_arg_0~0#1|) .cse12))))))) [2022-11-03 02:37:11,841 INFO L899 garLoopResultBuilder]: For program point L67-3(lines 67 124) no Hoare annotation was computed. [2022-11-03 02:37:11,841 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-11-03 02:37:11,841 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-03 02:37:11,841 INFO L895 garLoopResultBuilder]: At program point L125(lines 22 126) the Hoare annotation is: false [2022-11-03 02:37:11,841 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-11-03 02:37:11,841 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 20) no Hoare annotation was computed. [2022-11-03 02:37:11,841 INFO L899 garLoopResultBuilder]: For program point L119(line 119) no Hoare annotation was computed. [2022-11-03 02:37:11,841 INFO L899 garLoopResultBuilder]: For program point L119-2(line 119) no Hoare annotation was computed. [2022-11-03 02:37:11,841 INFO L899 garLoopResultBuilder]: For program point L20(line 20) no Hoare annotation was computed. [2022-11-03 02:37:11,842 INFO L899 garLoopResultBuilder]: For program point L20-1(line 20) no Hoare annotation was computed. [2022-11-03 02:37:11,842 INFO L899 garLoopResultBuilder]: For program point L20-3(line 20) no Hoare annotation was computed. [2022-11-03 02:37:11,844 INFO L444 BasicCegarLoop]: Path program histogram: [5, 3, 1, 1] [2022-11-03 02:37:11,847 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-03 02:37:11,883 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 02:37:11 BoogieIcfgContainer [2022-11-03 02:37:11,891 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-03 02:37:11,891 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-03 02:37:11,891 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-03 02:37:11,892 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-03 02:37:11,892 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:34:58" (3/4) ... [2022-11-03 02:37:11,895 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-03 02:37:11,908 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2022-11-03 02:37:11,908 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-11-03 02:37:11,909 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-03 02:37:11,951 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.witnessprinter has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSLBacktranslationValueProvider.getStringFromIASTNode(CACSLBacktranslationValueProvider.java:78) at de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSLBacktranslationValueProvider.getStringFromStep(CACSLBacktranslationValueProvider.java:59) at de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSLBacktranslationValueProvider.getStringFromStep(CACSLBacktranslationValueProvider.java:1) at de.uni_freiburg.informatik.ultimate.witnessprinter.graphml.GeneratedWitnessEdge.getSourceCode(GeneratedWitnessEdge.java:153) at de.uni_freiburg.informatik.ultimate.witnessprinter.CorrectnessWitnessGenerator.lambda$2(CorrectnessWitnessGenerator.java:95) at edu.uci.ics.jung.io.GraphMLWriter.writeEdgeData(GraphMLWriter.java:237) at de.uni_freiburg.informatik.ultimate.witnessprinter.graphml.UltimateGraphMLWriter.save(UltimateGraphMLWriter.java:106) at de.uni_freiburg.informatik.ultimate.witnessprinter.CorrectnessWitnessGenerator.makeGraphMLString(CorrectnessWitnessGenerator.java:115) at de.uni_freiburg.informatik.ultimate.witnessprinter.WitnessPrinter.generateProofWitness(WitnessPrinter.java:158) at de.uni_freiburg.informatik.ultimate.witnessprinter.WitnessPrinter.finish(WitnessPrinter.java:138) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:131) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-03 02:37:11,955 INFO L158 Benchmark]: Toolchain (without parser) took 134404.22ms. Allocated memory was 67.1MB in the beginning and 209.7MB in the end (delta: 142.6MB). Free memory was 45.7MB in the beginning and 174.4MB in the end (delta: -128.7MB). Peak memory consumption was 13.9MB. Max. memory is 16.1GB. [2022-11-03 02:37:11,956 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 67.1MB. Free memory was 46.5MB in the beginning and 46.4MB in the end (delta: 57.1kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 02:37:11,956 INFO L158 Benchmark]: CACSL2BoogieTranslator took 340.92ms. Allocated memory is still 67.1MB. Free memory was 45.5MB in the beginning and 48.3MB in the end (delta: -2.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-03 02:37:11,956 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.53ms. Allocated memory is still 67.1MB. Free memory was 48.3MB in the beginning and 46.5MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-03 02:37:11,957 INFO L158 Benchmark]: Boogie Preprocessor took 26.51ms. Allocated memory is still 67.1MB. Free memory was 46.5MB in the beginning and 44.9MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 02:37:11,957 INFO L158 Benchmark]: RCFGBuilder took 434.32ms. Allocated memory is still 67.1MB. Free memory was 44.9MB in the beginning and 32.6MB in the end (delta: 12.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-03 02:37:11,958 INFO L158 Benchmark]: TraceAbstraction took 133497.24ms. Allocated memory was 67.1MB in the beginning and 209.7MB in the end (delta: 142.6MB). Free memory was 31.8MB in the beginning and 177.5MB in the end (delta: -145.7MB). Peak memory consumption was 120.0MB. Max. memory is 16.1GB. [2022-11-03 02:37:11,958 INFO L158 Benchmark]: Witness Printer took 63.16ms. Allocated memory is still 209.7MB. Free memory was 177.5MB in the beginning and 174.4MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-03 02:37:11,962 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 67.1MB. Free memory was 46.5MB in the beginning and 46.4MB in the end (delta: 57.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 340.92ms. Allocated memory is still 67.1MB. Free memory was 45.5MB in the beginning and 48.3MB in the end (delta: -2.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 36.53ms. Allocated memory is still 67.1MB. Free memory was 48.3MB in the beginning and 46.5MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 26.51ms. Allocated memory is still 67.1MB. Free memory was 46.5MB in the beginning and 44.9MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 434.32ms. Allocated memory is still 67.1MB. Free memory was 44.9MB in the beginning and 32.6MB in the end (delta: 12.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 133497.24ms. Allocated memory was 67.1MB in the beginning and 209.7MB in the end (delta: 142.6MB). Free memory was 31.8MB in the beginning and 177.5MB in the end (delta: -145.7MB). Peak memory consumption was 120.0MB. Max. memory is 16.1GB. * Witness Printer took 63.16ms. Allocated memory is still 209.7MB. Free memory was 177.5MB in the beginning and 174.4MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 20]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 133.3s, OverallIterations: 10, TraceHistogramMax: 11, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 26.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 2.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 580 SdHoareTripleChecker+Valid, 3.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 580 mSDsluCounter, 764 SdHoareTripleChecker+Invalid, 3.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 1145 IncrementalHoareTripleChecker+Unchecked, 691 mSDsCounter, 211 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1617 IncrementalHoareTripleChecker+Invalid, 2973 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 211 mSolverCounterUnsat, 73 mSDtfsCounter, 1617 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1518 GetRequests, 1126 SyntacticMatches, 18 SemanticMatches, 374 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3766 ImplicationChecksByTransitivity, 86.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=81occurred in iteration=9, InterpolantAutomatonStates: 198, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 73 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 16 NumberOfFragments, 392 HoareAnnotationTreeSize, 2 FomulaSimplifications, 2356 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 2 FomulaSimplificationsInter, 5518 FormulaSimplificationTreeSizeReductionInter, 1.9s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.9s SsaConstructionTime, 2.0s SatisfiabilityAnalysisTime, 95.5s InterpolantComputationTime, 705 NumberOfCodeBlocks, 615 NumberOfCodeBlocksAsserted, 74 NumberOfCheckSat, 1345 ConstructedInterpolants, 425 QuantifiedInterpolants, 69448 SizeOfPredicates, 965 NumberOfNonLiveVariables, 6481 ConjunctsInSsa, 1028 ConjunctsInUnsatCore, 50 InterpolantComputations, 2 PerfectInterpolantSequences, 1131/3758 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 67]: Loop Invariant Derived loop invariant: (((((((((((((((((1bv8 == mask_SORT_1 && !(cond == 0bv32)) && var_16 == 0bv8) && 7bv8 == mask_SORT_7) && cond == 1bv32) && 3bv8 == mask_SORT_14) && var_54_arg_1 == 0bv8) && var_8 == 0bv8) && 4bv8 == var_52) && var_54_arg_0 == 0bv8) && 1bv8 == var_50) && var_54_arg_2 == ~bvadd64(~zero_extendFrom16To32(~bvand32(~zero_extendFrom16To32(~zero_extendFrom16To32(~zero_extendFrom16To32(var_50)[7:0])[7:0]), ~zero_extendFrom16To32(mask_SORT_7))[7:0]), ~zero_extendFrom16To32(var_50))[7:0]) && var_12 == 0bv8) && ~bvand32(~zero_extendFrom16To32(mask_SORT_7), ~zero_extendFrom16To32(~zero_extendFrom16To32(~bvadd64(~zero_extendFrom16To32(~bvand32(~zero_extendFrom16To32(~zero_extendFrom16To32(~zero_extendFrom16To32(var_50)[7:0])[7:0]), ~zero_extendFrom16To32(mask_SORT_7))[7:0]), ~zero_extendFrom16To32(var_50))[7:0])[7:0]))[7:0] == state_9) || (((((((((((((1bv8 == mask_SORT_1 && !(cond == 0bv32)) && var_16 == 0bv8) && ~bvadd64(~zero_extendFrom16To32(~bvand32(~zero_extendFrom16To32(~zero_extendFrom16To32(~bvadd64(~zero_extendFrom16To32(~bvand32(~zero_extendFrom16To32(~zero_extendFrom16To32(~bvadd64(1bv32, ~zero_extendFrom16To32(~bvand32(~zero_extendFrom16To32(mask_SORT_7), 1bv32)[7:0]))[7:0])[7:0]), ~zero_extendFrom16To32(mask_SORT_7))[7:0]), 1bv32)[7:0])[7:0]), ~zero_extendFrom16To32(mask_SORT_7))[7:0]), 1bv32)[7:0] == var_54_arg_2) && 7bv8 == mask_SORT_7) && cond == 1bv32) && 3bv8 == mask_SORT_14) && var_54_arg_1 == 0bv8) && var_8 == 0bv8) && 4bv8 == var_52) && var_54_arg_0 == 0bv8) && 1bv8 == var_50) && var_12 == 0bv8) && 4bv8 == state_9)) || (((((((((((((1bv8 == mask_SORT_1 && !(cond == 0bv32)) && var_16 == 0bv8) && 7bv8 == mask_SORT_7) && cond == 1bv32) && 3bv8 == mask_SORT_14) && var_54_arg_1 == 0bv8) && var_8 == 0bv8) && 4bv8 == var_52) && ~bvand32(~zero_extendFrom16To32(~zero_extendFrom16To32(~zero_extendFrom16To32(var_50)[7:0])[7:0]), ~zero_extendFrom16To32(mask_SORT_7))[7:0] == state_9) && var_54_arg_0 == 0bv8) && 1bv8 == var_50) && var_12 == 0bv8) && ~zero_extendFrom16To32(var_50)[7:0] == var_54_arg_2)) || (((((((((((((1bv8 == mask_SORT_1 && !(cond == 0bv32)) && var_16 == 0bv8) && 7bv8 == mask_SORT_7) && cond == 1bv32) && 3bv8 == mask_SORT_14) && var_54_arg_1 == 0bv8) && var_8 == 0bv8) && ~zero_extendFrom16To32(~bvand32(~zero_extendFrom16To32(~bvashr32(~zero_extendFrom16To32(state_9), 2bv32)[7:0]), ~zero_extendFrom16To32(mask_SORT_1))[7:0]) == ~zero_extendFrom16To32(var_12)) && 4bv8 == var_52) && state_9 == ~bvand32(~zero_extendFrom16To32(~zero_extendFrom16To32(~bvadd64(~zero_extendFrom16To32(var_50), ~zero_extendFrom16To32(~bvand32(~zero_extendFrom16To32(mask_SORT_7), ~zero_extendFrom16To32(~zero_extendFrom16To32(~bvadd64(~zero_extendFrom16To32(~bvand32(~zero_extendFrom16To32(~zero_extendFrom16To32(~zero_extendFrom16To32(var_50)[7:0])[7:0]), ~zero_extendFrom16To32(mask_SORT_7))[7:0]), ~zero_extendFrom16To32(var_50))[7:0])[7:0]))[7:0]))[7:0])[7:0]), ~zero_extendFrom16To32(mask_SORT_7))[7:0]) && var_54_arg_0 == 0bv8) && 1bv8 == var_50) && var_54_arg_2 == ~bvadd64(~zero_extendFrom16To32(var_50), ~zero_extendFrom16To32(~bvand32(~zero_extendFrom16To32(mask_SORT_7), ~zero_extendFrom16To32(~zero_extendFrom16To32(~bvadd64(~zero_extendFrom16To32(~bvand32(~zero_extendFrom16To32(~zero_extendFrom16To32(~zero_extendFrom16To32(var_50)[7:0])[7:0]), ~zero_extendFrom16To32(mask_SORT_7))[7:0]), ~zero_extendFrom16To32(var_50))[7:0])[7:0]))[7:0]))[7:0])) || (((((((((1bv8 == mask_SORT_1 && var_16 == 0bv8) && 7bv8 == mask_SORT_7) && 3bv8 == mask_SORT_14) && 4bv8 == var_52) && state_9 == var_8) && state_9 == 0bv8) && 1bv8 == var_50) && var_12 == 0bv8) && 1bv8 == var_21)) || (((((((((((1bv8 == mask_SORT_1 && var_16 == 0bv8) && 7bv8 == mask_SORT_7) && cond == 1bv32) && 3bv8 == mask_SORT_14) && var_54_arg_1 == 0bv8) && var_8 == 0bv8) && 4bv8 == var_52) && state_9 == 0bv8) && 1bv8 == var_50) && 1bv8 == var_54_arg_0) && var_12 == 0bv8) * Results from de.uni_freiburg.informatik.ultimate.witnessprinter: - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.witnessprinter: NullPointerException: null: de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSLBacktranslationValueProvider.getStringFromIASTNode(CACSLBacktranslationValueProvider.java:78) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-11-03 02:37:12,094 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28251a61-142e-4159-b33a-5b5ba8e01b52/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: NullPointerException: null