./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.twocount32.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_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/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_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.twocount32.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/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_cec94e0e-232e-4773-aac6-22f1052b544b/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 870393880f3eeabaf9027e474e4a742f6bf5934c1db12e4b3a2cd7e0ec435e2a --- 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 02:35:32,494 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 02:35:32,497 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 02:35:32,562 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 02:35:32,563 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 02:35:32,568 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 02:35:32,571 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 02:35:32,576 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 02:35:32,579 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 02:35:32,589 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 02:35:32,590 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 02:35:32,592 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 02:35:32,593 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 02:35:32,596 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 02:35:32,597 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 02:35:32,599 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 02:35:32,602 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 02:35:32,603 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 02:35:32,605 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 02:35:32,614 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 02:35:32,616 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 02:35:32,619 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 02:35:32,622 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 02:35:32,624 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 02:35:32,631 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 02:35:32,637 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 02:35:32,637 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 02:35:32,638 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 02:35:32,640 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 02:35:32,642 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 02:35:32,643 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 02:35:32,644 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 02:35:32,646 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 02:35:32,649 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 02:35:32,651 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 02:35:32,651 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 02:35:32,652 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 02:35:32,653 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 02:35:32,653 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 02:35:32,654 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 02:35:32,655 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 02:35:32,656 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-03 02:35:32,709 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 02:35:32,709 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 02:35:32,710 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 02:35:32,710 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 02:35:32,711 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 02:35:32,712 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 02:35:32,712 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 02:35:32,712 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 02:35:32,712 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 02:35:32,713 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 02:35:32,714 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 02:35:32,714 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 02:35:32,715 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 02:35:32,715 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 02:35:32,715 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 02:35:32,715 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 02:35:32,716 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 02:35:32,716 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 02:35:32,718 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 02:35:32,718 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 02:35:32,719 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 02:35:32,719 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 02:35:32,719 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 02:35:32,719 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 02:35:32,720 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 02:35:32,720 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 02:35:32,720 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 02:35:32,720 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 02:35:32,721 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 02:35:32,721 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:35:32,721 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 02:35:32,722 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 02:35:32,722 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 02:35:32,722 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 02:35:32,723 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 02:35:32,724 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 02:35:32,724 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 02:35:32,724 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 02:35:32,724 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_cec94e0e-232e-4773-aac6-22f1052b544b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 870393880f3eeabaf9027e474e4a742f6bf5934c1db12e4b3a2cd7e0ec435e2a [2022-11-03 02:35:33,087 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 02:35:33,135 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 02:35:33,139 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 02:35:33,141 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 02:35:33,142 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 02:35:33,144 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.twocount32.c [2022-11-03 02:35:33,253 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI/data/b1b6a2cb7/d86bfeaae17740c49a094725976c3ab4/FLAGac5a1a4ee [2022-11-03 02:35:33,811 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 02:35:33,812 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.twocount32.c [2022-11-03 02:35:33,823 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI/data/b1b6a2cb7/d86bfeaae17740c49a094725976c3ab4/FLAGac5a1a4ee [2022-11-03 02:35:34,162 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI/data/b1b6a2cb7/d86bfeaae17740c49a094725976c3ab4 [2022-11-03 02:35:34,166 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 02:35:34,169 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 02:35:34,173 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 02:35:34,173 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 02:35:34,185 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 02:35:34,186 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:35:34" (1/1) ... [2022-11-03 02:35:34,187 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@285ded51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:35:34, skipping insertion in model container [2022-11-03 02:35:34,188 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:35:34" (1/1) ... [2022-11-03 02:35:34,197 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 02:35:34,229 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:35:34,417 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_cec94e0e-232e-4773-aac6-22f1052b544b/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.twocount32.c[1117,1130] [2022-11-03 02:35:34,460 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:35:34,465 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 02:35:34,478 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_cec94e0e-232e-4773-aac6-22f1052b544b/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.twocount32.c[1117,1130] [2022-11-03 02:35:34,495 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:35:34,511 INFO L208 MainTranslator]: Completed translation [2022-11-03 02:35:34,512 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:35:34 WrapperNode [2022-11-03 02:35:34,512 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 02:35:34,513 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 02:35:34,514 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 02:35:34,514 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 02:35:34,524 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:35:34" (1/1) ... [2022-11-03 02:35:34,532 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:35:34" (1/1) ... [2022-11-03 02:35:34,561 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 73 [2022-11-03 02:35:34,562 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 02:35:34,563 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 02:35:34,563 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 02:35:34,563 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 02:35:34,575 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:35:34" (1/1) ... [2022-11-03 02:35:34,575 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:35:34" (1/1) ... [2022-11-03 02:35:34,578 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:35:34" (1/1) ... [2022-11-03 02:35:34,579 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:35:34" (1/1) ... [2022-11-03 02:35:34,584 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:35:34" (1/1) ... [2022-11-03 02:35:34,590 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:35:34" (1/1) ... [2022-11-03 02:35:34,592 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:35:34" (1/1) ... [2022-11-03 02:35:34,593 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:35:34" (1/1) ... [2022-11-03 02:35:34,596 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 02:35:34,597 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 02:35:34,597 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 02:35:34,598 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 02:35:34,614 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:35:34" (1/1) ... [2022-11-03 02:35:34,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:35:34,638 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:35:34,659 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 02:35:34,673 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 02:35:34,715 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 02:35:34,715 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 02:35:34,816 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 02:35:34,819 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 02:35:35,112 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 02:35:35,183 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 02:35:35,183 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-03 02:35:35,186 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:35:35 BoogieIcfgContainer [2022-11-03 02:35:35,186 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 02:35:35,189 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 02:35:35,189 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 02:35:35,194 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 02:35:35,194 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:35:34" (1/3) ... [2022-11-03 02:35:35,195 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4dad68c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:35:35, skipping insertion in model container [2022-11-03 02:35:35,195 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:35:34" (2/3) ... [2022-11-03 02:35:35,196 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4dad68c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:35:35, skipping insertion in model container [2022-11-03 02:35:35,196 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:35:35" (3/3) ... [2022-11-03 02:35:35,198 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.twocount32.c [2022-11-03 02:35:35,223 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 02:35:35,224 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 02:35:35,289 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:35:35,309 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;@3419f542, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:35:35,309 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 02:35:35,320 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 02:35:35,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-03 02:35:35,329 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:35:35,330 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-03 02:35:35,331 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:35:35,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:35:35,340 INFO L85 PathProgramCache]: Analyzing trace with hash 2244353, now seen corresponding path program 1 times [2022-11-03 02:35:35,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:35:35,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686821516] [2022-11-03 02:35:35,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:35:35,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:35:35,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:35:36,495 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 02:35:36,499 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:35:36,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686821516] [2022-11-03 02:35:36,501 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686821516] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:35:36,501 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:35:36,502 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:35:36,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627693528] [2022-11-03 02:35:36,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:35:36,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:35:36,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:35:36,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:35:36,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:35:36,593 INFO L87 Difference]: Start difference. First 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) Second operand has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:35:36,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:35:36,741 INFO L93 Difference]: Finished difference Result 15 states and 20 transitions. [2022-11-03 02:35:36,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:35:36,744 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-11-03 02:35:36,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:35:36,754 INFO L225 Difference]: With dead ends: 15 [2022-11-03 02:35:36,755 INFO L226 Difference]: Without dead ends: 9 [2022-11-03 02:35:36,758 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 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 02:35:36,763 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 4 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:35:36,764 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 7 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:35:36,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2022-11-03 02:35:36,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 8. [2022-11-03 02:35:36,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 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 02:35:36,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2022-11-03 02:35:36,805 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 4 [2022-11-03 02:35:36,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:35:36,806 INFO L495 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2022-11-03 02:35:36,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:35:36,806 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2022-11-03 02:35:36,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-03 02:35:36,807 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:35:36,807 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2022-11-03 02:35:36,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 02:35:36,808 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:35:36,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:35:36,809 INFO L85 PathProgramCache]: Analyzing trace with hash -1852196822, now seen corresponding path program 1 times [2022-11-03 02:35:36,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:35:36,810 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737469567] [2022-11-03 02:35:36,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:35:36,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:35:37,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-03 02:35:37,056 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-03 02:35:37,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-03 02:35:37,339 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-03 02:35:37,339 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-03 02:35:37,351 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-03 02:35:37,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 02:35:37,363 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-03 02:35:37,376 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-03 02:35:37,434 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-03 02:35:37,435 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-03 02:35:37,459 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 02:35:37 BoogieIcfgContainer [2022-11-03 02:35:37,459 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-03 02:35:37,461 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-03 02:35:37,462 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-03 02:35:37,462 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-03 02:35:37,463 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:35:35" (3/4) ... [2022-11-03 02:35:37,467 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-03 02:35:37,468 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-03 02:35:37,471 INFO L158 Benchmark]: Toolchain (without parser) took 3300.28ms. Allocated memory was 138.4MB in the beginning and 176.2MB in the end (delta: 37.7MB). Free memory was 105.9MB in the beginning and 151.2MB in the end (delta: -45.2MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 02:35:37,472 INFO L158 Benchmark]: CDTParser took 1.36ms. Allocated memory is still 88.1MB. Free memory is still 43.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 02:35:37,474 INFO L158 Benchmark]: CACSL2BoogieTranslator took 339.55ms. Allocated memory is still 138.4MB. Free memory was 105.7MB in the beginning and 114.6MB in the end (delta: -8.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-03 02:35:37,478 INFO L158 Benchmark]: Boogie Procedure Inliner took 48.41ms. Allocated memory is still 138.4MB. Free memory was 114.6MB in the beginning and 112.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-03 02:35:37,479 INFO L158 Benchmark]: Boogie Preprocessor took 33.89ms. Allocated memory is still 138.4MB. Free memory was 112.5MB in the beginning and 111.1MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-03 02:35:37,483 INFO L158 Benchmark]: RCFGBuilder took 589.16ms. Allocated memory is still 138.4MB. Free memory was 111.1MB in the beginning and 93.1MB in the end (delta: 18.0MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-11-03 02:35:37,483 INFO L158 Benchmark]: TraceAbstraction took 2270.59ms. Allocated memory was 138.4MB in the beginning and 176.2MB in the end (delta: 37.7MB). Free memory was 92.6MB in the beginning and 151.2MB in the end (delta: -58.6MB). Peak memory consumption was 41.4MB. Max. memory is 16.1GB. [2022-11-03 02:35:37,484 INFO L158 Benchmark]: Witness Printer took 7.55ms. Allocated memory is still 176.2MB. Free memory is still 151.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 02:35:37,492 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.36ms. Allocated memory is still 88.1MB. Free memory is still 43.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 339.55ms. Allocated memory is still 138.4MB. Free memory was 105.7MB in the beginning and 114.6MB in the end (delta: -8.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 48.41ms. Allocated memory is still 138.4MB. Free memory was 114.6MB in the beginning and 112.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 33.89ms. Allocated memory is still 138.4MB. Free memory was 112.5MB in the beginning and 111.1MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 589.16ms. Allocated memory is still 138.4MB. Free memory was 111.1MB in the beginning and 93.1MB in the end (delta: 18.0MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 2270.59ms. Allocated memory was 138.4MB in the beginning and 176.2MB in the end (delta: 37.7MB). Free memory was 92.6MB in the beginning and 151.2MB in the end (delta: -58.6MB). Peak memory consumption was 41.4MB. Max. memory is 16.1GB. * Witness Printer took 7.55ms. Allocated memory is still 176.2MB. Free memory is still 151.2MB. 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: 21]: 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 76, overapproximation of bitwiseAnd at line 48. Possible FailurePath: [L26] const SORT_1 mask_SORT_1 = (SORT_1)-1 >> (sizeof(SORT_1) * 8 - 1); [L27] const SORT_1 msb_SORT_1 = (SORT_1)1 << (1 - 1); [L29] const SORT_2 mask_SORT_2 = (SORT_2)-1 >> (sizeof(SORT_2) * 8 - 32); [L30] const SORT_2 msb_SORT_2 = (SORT_2)1 << (32 - 1); [L32] const SORT_2 var_4 = 0; [L33] const SORT_2 var_9 = 1; [L34] const SORT_2 var_16 = 3; [L36] SORT_1 input_3; [L38] SORT_2 state_5 = __VERIFIER_nondet_uint() & mask_SORT_2; [L39] SORT_2 state_6 = __VERIFIER_nondet_uint() & mask_SORT_2; [L41] SORT_2 init_7_arg_1 = var_4; [L42] state_5 = init_7_arg_1 [L43] SORT_2 init_8_arg_1 = var_4; [L44] state_6 = init_8_arg_1 VAL [init_7_arg_1=0, init_8_arg_1=0, mask_SORT_1=1, mask_SORT_2=4294967295, msb_SORT_1=1, msb_SORT_2=2147483648, state_5=0, state_6=0, var_16=3, var_4=0, var_9=1] [L47] input_3 = __VERIFIER_nondet_uchar() [L48] input_3 = input_3 & mask_SORT_1 [L51] SORT_2 var_17_arg_0 = state_5; [L52] SORT_2 var_17_arg_1 = var_16; [L53] SORT_1 var_17 = var_17_arg_0 == var_17_arg_1; [L54] SORT_2 var_18_arg_0 = state_6; [L55] SORT_2 var_18_arg_1 = var_16; [L56] SORT_1 var_18 = var_18_arg_0 == var_18_arg_1; [L57] SORT_1 var_19_arg_0 = var_17; [L58] SORT_1 var_19_arg_1 = var_18; [L59] SORT_1 var_19 = var_19_arg_0 & var_19_arg_1; [L60] var_19 = var_19 & mask_SORT_1 [L61] SORT_1 bad_20_arg_0 = var_19; [L62] CALL __VERIFIER_assert(!(bad_20_arg_0)) [L21] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L62] RET __VERIFIER_assert(!(bad_20_arg_0)) [L64] SORT_2 var_10_arg_0 = state_5; [L65] SORT_2 var_10_arg_1 = var_9; [L66] SORT_2 var_10 = var_10_arg_0 + var_10_arg_1; [L67] SORT_1 var_12_arg_0 = input_3; [L68] SORT_2 var_12_arg_1 = state_5; [L69] SORT_2 var_12_arg_2 = var_10; [L70] EXPR var_12_arg_0 ? var_12_arg_1 : var_12_arg_2 [L70] SORT_2 var_12 = var_12_arg_0 ? var_12_arg_1 : var_12_arg_2; [L71] var_12 = var_12 & mask_SORT_2 [L72] SORT_2 next_14_arg_1 = var_12; [L73] SORT_2 var_11_arg_0 = state_6; [L74] SORT_2 var_11_arg_1 = var_9; [L75] SORT_2 var_11 = var_11_arg_0 + var_11_arg_1; [L76] SORT_1 var_13_arg_0 = ~input_3; [L77] var_13_arg_0 = var_13_arg_0 & mask_SORT_1 [L78] SORT_2 var_13_arg_1 = state_6; [L79] SORT_2 var_13_arg_2 = var_11; [L80] EXPR var_13_arg_0 ? var_13_arg_1 : var_13_arg_2 [L80] SORT_2 var_13 = var_13_arg_0 ? var_13_arg_1 : var_13_arg_2; [L81] var_13 = var_13 & mask_SORT_2 [L82] SORT_2 next_15_arg_1 = var_13; [L84] state_5 = next_14_arg_1 [L85] state_6 = next_15_arg_1 VAL [bad_20_arg_0=0, init_7_arg_1=0, init_8_arg_1=0, input_3=0, mask_SORT_1=1, mask_SORT_2=4294967295, msb_SORT_1=1, msb_SORT_2=2147483648, next_14_arg_1=3, next_15_arg_1=3, state_5=3, state_6=3, var_10=1, var_10_arg_0=0, var_10_arg_1=1, var_11=1, var_11_arg_0=0, var_11_arg_1=1, var_12=3, var_12_arg_0=0, var_12_arg_1=0, var_12_arg_2=1, var_13=3, var_13_arg_0=0, var_13_arg_1=0, var_13_arg_2=1, var_16=3, var_17=0, var_17_arg_0=0, var_17_arg_1=3, var_18=0, var_18_arg_0=0, var_18_arg_1=3, var_19=0, var_19_arg_0=0, var_19_arg_1=0, var_4=0, var_9=1] [L47] input_3 = __VERIFIER_nondet_uchar() [L48] input_3 = input_3 & mask_SORT_1 [L51] SORT_2 var_17_arg_0 = state_5; [L52] SORT_2 var_17_arg_1 = var_16; [L53] SORT_1 var_17 = var_17_arg_0 == var_17_arg_1; [L54] SORT_2 var_18_arg_0 = state_6; [L55] SORT_2 var_18_arg_1 = var_16; [L56] SORT_1 var_18 = var_18_arg_0 == var_18_arg_1; [L57] SORT_1 var_19_arg_0 = var_17; [L58] SORT_1 var_19_arg_1 = var_18; [L59] SORT_1 var_19 = var_19_arg_0 & var_19_arg_1; [L60] var_19 = var_19 & mask_SORT_1 [L61] SORT_1 bad_20_arg_0 = var_19; [L62] CALL __VERIFIER_assert(!(bad_20_arg_0)) [L21] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L21] 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: 2.1s, OverallIterations: 2, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 4 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 4 mSDsluCounter, 7 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 5 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 9 IncrementalHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 3 mSDtfsCounter, 9 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8occurred in iteration=1, InterpolantAutomatonStates: 5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 3 ConstructedInterpolants, 0 QuantifiedInterpolants, 15 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 02:35:37,569 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/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 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_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/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_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.twocount32.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/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_cec94e0e-232e-4773-aac6-22f1052b544b/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 870393880f3eeabaf9027e474e4a742f6bf5934c1db12e4b3a2cd7e0ec435e2a --- 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 02:35:40,414 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 02:35:40,418 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 02:35:40,491 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 02:35:40,492 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 02:35:40,497 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 02:35:40,500 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 02:35:40,506 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 02:35:40,514 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 02:35:40,521 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 02:35:40,522 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 02:35:40,523 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 02:35:40,524 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 02:35:40,525 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 02:35:40,526 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 02:35:40,528 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 02:35:40,529 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 02:35:40,530 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 02:35:40,532 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 02:35:40,548 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 02:35:40,551 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 02:35:40,554 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 02:35:40,558 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 02:35:40,560 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 02:35:40,571 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 02:35:40,571 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 02:35:40,571 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 02:35:40,573 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 02:35:40,573 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 02:35:40,574 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 02:35:40,575 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 02:35:40,576 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 02:35:40,577 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 02:35:40,578 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 02:35:40,579 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 02:35:40,579 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 02:35:40,580 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 02:35:40,583 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 02:35:40,584 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 02:35:40,586 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 02:35:40,587 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 02:35:40,588 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2022-11-03 02:35:40,640 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 02:35:40,640 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 02:35:40,642 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 02:35:40,642 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 02:35:40,644 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 02:35:40,644 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 02:35:40,644 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 02:35:40,644 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 02:35:40,645 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 02:35:40,645 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 02:35:40,646 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 02:35:40,646 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 02:35:40,648 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 02:35:40,649 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 02:35:40,649 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 02:35:40,649 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 02:35:40,649 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 02:35:40,649 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-03 02:35:40,650 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-03 02:35:40,650 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-03 02:35:40,650 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 02:35:40,650 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 02:35:40,651 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 02:35:40,651 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 02:35:40,651 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-03 02:35:40,651 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 02:35:40,652 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:35:40,652 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 02:35:40,652 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 02:35:40,652 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 02:35:40,652 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-03 02:35:40,653 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-03 02:35:40,653 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 02:35:40,653 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 02:35:40,654 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-03 02:35:40,654 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_cec94e0e-232e-4773-aac6-22f1052b544b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 870393880f3eeabaf9027e474e4a742f6bf5934c1db12e4b3a2cd7e0ec435e2a [2022-11-03 02:35:41,177 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 02:35:41,212 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 02:35:41,218 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 02:35:41,221 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 02:35:41,222 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 02:35:41,224 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.twocount32.c [2022-11-03 02:35:41,321 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI/data/5b6b6e42a/e5a2dc9c372a4c4c862e01dcccb939fe/FLAG6f7f1083c [2022-11-03 02:35:42,084 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 02:35:42,088 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.twocount32.c [2022-11-03 02:35:42,099 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI/data/5b6b6e42a/e5a2dc9c372a4c4c862e01dcccb939fe/FLAG6f7f1083c [2022-11-03 02:35:42,121 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI/data/5b6b6e42a/e5a2dc9c372a4c4c862e01dcccb939fe [2022-11-03 02:35:42,124 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 02:35:42,127 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 02:35:42,130 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 02:35:42,130 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 02:35:42,135 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 02:35:42,136 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:35:42" (1/1) ... [2022-11-03 02:35:42,137 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d246945 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:35:42, skipping insertion in model container [2022-11-03 02:35:42,137 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:35:42" (1/1) ... [2022-11-03 02:35:42,147 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 02:35:42,174 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:35:42,368 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_cec94e0e-232e-4773-aac6-22f1052b544b/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.twocount32.c[1117,1130] [2022-11-03 02:35:42,417 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:35:42,422 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 02:35:42,447 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_cec94e0e-232e-4773-aac6-22f1052b544b/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.twocount32.c[1117,1130] [2022-11-03 02:35:42,478 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:35:42,516 INFO L208 MainTranslator]: Completed translation [2022-11-03 02:35:42,517 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:35:42 WrapperNode [2022-11-03 02:35:42,517 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 02:35:42,519 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 02:35:42,520 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 02:35:42,520 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 02:35:42,527 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:35:42" (1/1) ... [2022-11-03 02:35:42,535 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:35:42" (1/1) ... [2022-11-03 02:35:42,559 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 73 [2022-11-03 02:35:42,560 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 02:35:42,561 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 02:35:42,561 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 02:35:42,561 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 02:35:42,571 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:35:42" (1/1) ... [2022-11-03 02:35:42,571 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:35:42" (1/1) ... [2022-11-03 02:35:42,575 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:35:42" (1/1) ... [2022-11-03 02:35:42,575 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:35:42" (1/1) ... [2022-11-03 02:35:42,581 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:35:42" (1/1) ... [2022-11-03 02:35:42,586 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:35:42" (1/1) ... [2022-11-03 02:35:42,588 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:35:42" (1/1) ... [2022-11-03 02:35:42,589 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:35:42" (1/1) ... [2022-11-03 02:35:42,591 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 02:35:42,593 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 02:35:42,593 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 02:35:42,593 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 02:35:42,594 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:35:42" (1/1) ... [2022-11-03 02:35:42,602 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:35:42,618 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:35:42,632 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 02:35:42,652 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 02:35:42,695 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 02:35:42,696 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 02:35:42,786 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 02:35:42,788 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 02:35:43,121 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 02:35:43,137 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 02:35:43,137 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-03 02:35:43,139 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:35:43 BoogieIcfgContainer [2022-11-03 02:35:43,140 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 02:35:43,155 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 02:35:43,155 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 02:35:43,159 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 02:35:43,159 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:35:42" (1/3) ... [2022-11-03 02:35:43,160 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73b80136 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:35:43, skipping insertion in model container [2022-11-03 02:35:43,160 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:35:42" (2/3) ... [2022-11-03 02:35:43,191 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73b80136 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:35:43, skipping insertion in model container [2022-11-03 02:35:43,191 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:35:43" (3/3) ... [2022-11-03 02:35:43,193 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.twocount32.c [2022-11-03 02:35:43,218 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 02:35:43,218 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 02:35:43,285 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:35:43,297 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;@4dd90e21, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:35:43,313 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 02:35:43,324 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:35:43,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-03 02:35:43,334 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:35:43,334 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-03 02:35:43,336 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:35:43,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:35:43,353 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2022-11-03 02:35:43,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:35:43,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1952166449] [2022-11-03 02:35:43,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:35:43,375 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:35:43,376 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:35:43,381 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:35:43,398 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-03 02:35:43,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:35:43,531 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-03 02:35:43,539 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:35:43,821 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 02:35:43,821 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:35:43,822 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:35:43,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1952166449] [2022-11-03 02:35:43,823 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1952166449] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:35:43,824 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:35:43,824 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:35:43,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629742268] [2022-11-03 02:35:43,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:35:43,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:35:43,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:35:43,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:35:43,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:35:43,882 INFO L87 Difference]: Start difference. First operand has 15 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) 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 02:35:43,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:35:43,986 INFO L93 Difference]: Finished difference Result 32 states and 48 transitions. [2022-11-03 02:35:43,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:35:43,991 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 02:35:43,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:35:44,016 INFO L225 Difference]: With dead ends: 32 [2022-11-03 02:35:44,016 INFO L226 Difference]: Without dead ends: 19 [2022-11-03 02:35:44,023 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 02:35:44,031 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 16 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:35:44,035 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 28 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 02:35:44,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-11-03 02:35:44,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 13. [2022-11-03 02:35:44,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:35:44,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2022-11-03 02:35:44,082 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 5 [2022-11-03 02:35:44,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:35:44,083 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2022-11-03 02:35:44,083 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 02:35:44,084 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2022-11-03 02:35:44,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-03 02:35:44,085 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:35:44,086 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:35:44,107 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-03 02:35:44,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:35:44,306 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:35:44,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:35:44,307 INFO L85 PathProgramCache]: Analyzing trace with hash 505863741, now seen corresponding path program 1 times [2022-11-03 02:35:44,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:35:44,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [33724220] [2022-11-03 02:35:44,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:35:44,309 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:35:44,309 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:35:44,311 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:35:44,315 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-03 02:35:44,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:35:44,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-03 02:35:44,400 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:35:44,610 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 02:35:44,610 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:35:45,064 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 02:35:45,064 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:35:45,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [33724220] [2022-11-03 02:35:45,065 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [33724220] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:35:45,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1040689438] [2022-11-03 02:35:45,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:35:45,066 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:35:45,066 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:35:45,069 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:35:45,114 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2022-11-03 02:35:45,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:35:45,218 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-03 02:35:45,221 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:35:45,395 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 02:35:45,396 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:35:45,569 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 02:35:45,569 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1040689438] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:35:45,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1749484946] [2022-11-03 02:35:45,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:35:45,570 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:35:45,571 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:35:45,573 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:35:45,597 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-03 02:35:45,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:35:45,651 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-03 02:35:45,653 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:35:45,848 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 02:35:45,849 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:35:46,121 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 02:35:46,122 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1749484946] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:35:46,122 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-03 02:35:46,122 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 7, 8, 8, 9] total 15 [2022-11-03 02:35:46,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248713045] [2022-11-03 02:35:46,124 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-03 02:35:46,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-03 02:35:46,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:35:46,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-03 02:35:46,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2022-11-03 02:35:46,130 INFO L87 Difference]: Start difference. First operand 13 states and 15 transitions. Second operand has 15 states, 15 states have (on average 1.7333333333333334) internal successors, (26), 15 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:35:46,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:35:46,606 INFO L93 Difference]: Finished difference Result 30 states and 36 transitions. [2022-11-03 02:35:46,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 02:35:46,609 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.7333333333333334) internal successors, (26), 15 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-03 02:35:46,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:35:46,610 INFO L225 Difference]: With dead ends: 30 [2022-11-03 02:35:46,610 INFO L226 Difference]: Without dead ends: 28 [2022-11-03 02:35:46,611 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 51 SyntacticMatches, 3 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=133, Invalid=329, Unknown=0, NotChecked=0, Total=462 [2022-11-03 02:35:46,613 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 52 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 67 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:35:46,617 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 71 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 38 Invalid, 0 Unknown, 67 Unchecked, 0.1s Time] [2022-11-03 02:35:46,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-11-03 02:35:46,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 18. [2022-11-03 02:35:46,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 17 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 02:35:46,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2022-11-03 02:35:46,627 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 12 [2022-11-03 02:35:46,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:35:46,628 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2022-11-03 02:35:46,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.7333333333333334) internal successors, (26), 15 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:35:46,629 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2022-11-03 02:35:46,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-03 02:35:46,629 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:35:46,630 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:35:46,641 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (4)] Ended with exit code 0 [2022-11-03 02:35:46,861 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-03 02:35:47,045 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-03 02:35:47,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:35:47,233 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:35:47,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:35:47,234 INFO L85 PathProgramCache]: Analyzing trace with hash -2014096193, now seen corresponding path program 1 times [2022-11-03 02:35:47,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:35:47,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [239429578] [2022-11-03 02:35:47,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:35:47,235 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:35:47,236 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:35:47,237 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:35:47,275 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-03 02:35:47,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:35:47,343 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-03 02:35:47,344 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:35:47,397 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 02:35:47,398 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:35:47,398 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:35:47,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [239429578] [2022-11-03 02:35:47,399 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [239429578] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:35:47,399 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:35:47,399 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:35:47,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024854622] [2022-11-03 02:35:47,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:35:47,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:35:47,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:35:47,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:35:47,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:35:47,403 INFO L87 Difference]: Start difference. First operand 18 states and 22 transitions. Second operand has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 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 02:35:47,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:35:47,541 INFO L93 Difference]: Finished difference Result 39 states and 47 transitions. [2022-11-03 02:35:47,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 02:35:47,545 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-03 02:35:47,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:35:47,546 INFO L225 Difference]: With dead ends: 39 [2022-11-03 02:35:47,546 INFO L226 Difference]: Without dead ends: 30 [2022-11-03 02:35:47,546 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2022-11-03 02:35:47,548 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 28 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:35:47,548 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 30 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:35:47,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-11-03 02:35:47,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 20. [2022-11-03 02:35:47,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.263157894736842) internal successors, (24), 19 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:35:47,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions. [2022-11-03 02:35:47,560 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 12 [2022-11-03 02:35:47,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:35:47,561 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 24 transitions. [2022-11-03 02:35:47,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 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 02:35:47,562 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2022-11-03 02:35:47,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-03 02:35:47,564 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:35:47,564 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:35:47,579 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-03 02:35:47,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:35:47,779 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:35:47,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:35:47,779 INFO L85 PathProgramCache]: Analyzing trace with hash -2015943235, now seen corresponding path program 1 times [2022-11-03 02:35:47,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:35:47,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [636921580] [2022-11-03 02:35:47,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:35:47,786 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:35:47,787 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:35:47,788 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:35:47,798 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-03 02:35:47,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:35:47,863 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-03 02:35:47,865 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:35:48,158 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 02:35:48,159 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:35:48,587 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 02:35:48,588 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:35:48,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [636921580] [2022-11-03 02:35:48,588 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [636921580] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:35:48,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [722701411] [2022-11-03 02:35:48,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:35:48,589 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:35:48,589 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:35:48,591 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:35:48,617 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2022-11-03 02:35:48,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:35:48,718 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-03 02:35:48,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:35:48,834 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 02:35:48,835 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:35:48,977 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 02:35:48,978 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [722701411] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:35:48,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1135242405] [2022-11-03 02:35:48,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:35:48,978 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:35:48,979 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:35:48,980 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:35:48,995 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-03 02:35:49,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:35:49,054 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-03 02:35:49,057 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:35:49,535 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 02:35:49,536 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:35:50,150 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 02:35:50,151 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1135242405] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:35:50,151 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-03 02:35:50,152 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 9, 9] total 24 [2022-11-03 02:35:50,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671602064] [2022-11-03 02:35:50,152 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-03 02:35:50,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-03 02:35:50,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:35:50,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-03 02:35:50,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=467, Unknown=0, NotChecked=0, Total=552 [2022-11-03 02:35:50,155 INFO L87 Difference]: Start difference. First operand 20 states and 24 transitions. Second operand has 24 states, 24 states have (on average 1.5416666666666667) internal successors, (37), 24 states have internal predecessors, (37), 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 02:35:50,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:35:50,771 INFO L93 Difference]: Finished difference Result 45 states and 53 transitions. [2022-11-03 02:35:50,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-03 02:35:50,772 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.5416666666666667) internal successors, (37), 24 states have internal predecessors, (37), 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 12 [2022-11-03 02:35:50,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:35:50,773 INFO L225 Difference]: With dead ends: 45 [2022-11-03 02:35:50,773 INFO L226 Difference]: Without dead ends: 43 [2022-11-03 02:35:50,774 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 42 SyntacticMatches, 2 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=215, Invalid=841, Unknown=0, NotChecked=0, Total=1056 [2022-11-03 02:35:50,775 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 64 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 88 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:35:50,776 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 123 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 49 Invalid, 0 Unknown, 88 Unchecked, 0.1s Time] [2022-11-03 02:35:50,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-11-03 02:35:50,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 29. [2022-11-03 02:35:50,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.2142857142857142) internal successors, (34), 28 states have internal predecessors, (34), 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 02:35:50,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 34 transitions. [2022-11-03 02:35:50,784 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 34 transitions. Word has length 12 [2022-11-03 02:35:50,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:35:50,785 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 34 transitions. [2022-11-03 02:35:50,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.5416666666666667) internal successors, (37), 24 states have internal predecessors, (37), 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 02:35:50,786 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 34 transitions. [2022-11-03 02:35:50,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-03 02:35:50,786 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:35:50,787 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:35:50,801 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (8)] Ended with exit code 0 [2022-11-03 02:35:51,018 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-03 02:35:51,200 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-03 02:35:51,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:35:51,391 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:35:51,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:35:51,392 INFO L85 PathProgramCache]: Analyzing trace with hash 397155721, now seen corresponding path program 1 times [2022-11-03 02:35:51,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:35:51,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1847505521] [2022-11-03 02:35:51,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:35:51,393 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:35:51,393 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:35:51,394 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:35:51,425 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-03 02:35:51,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:35:51,494 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-03 02:35:51,497 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:35:51,955 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-03 02:35:51,956 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:35:55,051 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:35:55,052 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:35:55,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1847505521] [2022-11-03 02:35:55,052 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1847505521] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:35:55,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [80354822] [2022-11-03 02:35:55,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:35:55,053 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:35:55,053 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:35:55,069 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:35:55,073 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2022-11-03 02:35:55,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:35:55,210 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-03 02:35:55,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:35:55,498 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-03 02:35:55,498 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:35:55,830 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:35:55,830 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [80354822] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:35:55,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [191697435] [2022-11-03 02:35:55,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:35:55,831 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:35:55,832 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:35:55,833 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:35:55,865 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-03 02:35:55,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:35:55,947 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 32 conjunts are in the unsatisfiable core [2022-11-03 02:35:55,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:35:56,961 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-03 02:35:56,961 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:35:58,303 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:35:58,303 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [191697435] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:35:58,303 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-03 02:35:58,304 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 11, 12, 12, 13] total 34 [2022-11-03 02:35:58,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179692175] [2022-11-03 02:35:58,304 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-03 02:35:58,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-11-03 02:35:58,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:35:58,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-11-03 02:35:58,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=998, Unknown=1, NotChecked=0, Total=1122 [2022-11-03 02:35:58,306 INFO L87 Difference]: Start difference. First operand 29 states and 34 transitions. Second operand has 34 states, 34 states have (on average 1.6470588235294117) internal successors, (56), 34 states have internal predecessors, (56), 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 02:36:01,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:36:01,652 INFO L93 Difference]: Finished difference Result 60 states and 70 transitions. [2022-11-03 02:36:01,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-03 02:36:01,669 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.6470588235294117) internal successors, (56), 34 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-11-03 02:36:01,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:36:01,670 INFO L225 Difference]: With dead ends: 60 [2022-11-03 02:36:01,671 INFO L226 Difference]: Without dead ends: 58 [2022-11-03 02:36:01,672 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 75 SyntacticMatches, 3 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 631 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=365, Invalid=2286, Unknown=1, NotChecked=0, Total=2652 [2022-11-03 02:36:01,673 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 95 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 163 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:36:01,674 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 151 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 62 Invalid, 0 Unknown, 163 Unchecked, 0.2s Time] [2022-11-03 02:36:01,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2022-11-03 02:36:01,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 39. [2022-11-03 02:36:01,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.236842105263158) internal successors, (47), 38 states have internal predecessors, (47), 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 02:36:01,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 47 transitions. [2022-11-03 02:36:01,693 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 47 transitions. Word has length 19 [2022-11-03 02:36:01,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:36:01,693 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 47 transitions. [2022-11-03 02:36:01,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.6470588235294117) internal successors, (56), 34 states have internal predecessors, (56), 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 02:36:01,697 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 47 transitions. [2022-11-03 02:36:01,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-03 02:36:01,698 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:36:01,698 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:36:01,714 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-11-03 02:36:01,927 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-03 02:36:02,101 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2022-11-03 02:36:02,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt [2022-11-03 02:36:02,300 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:36:02,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:36:02,301 INFO L85 PathProgramCache]: Analyzing trace with hash 1649680009, now seen corresponding path program 2 times [2022-11-03 02:36:02,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:36:02,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1166965914] [2022-11-03 02:36:02,301 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-03 02:36:02,301 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:36:02,302 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:36:02,303 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:36:02,311 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-11-03 02:36:02,388 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-03 02:36:02,389 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 02:36:02,394 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-03 02:36:02,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:36:02,941 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:36:02,941 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:36:03,899 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:36:03,899 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:36:03,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1166965914] [2022-11-03 02:36:03,900 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1166965914] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:36:03,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1569676505] [2022-11-03 02:36:03,900 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-03 02:36:03,900 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:36:03,901 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:36:03,902 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:36:03,925 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2022-11-03 02:36:04,056 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-03 02:36:04,057 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 02:36:04,060 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-03 02:36:04,062 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:36:04,291 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:36:04,291 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:36:04,531 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:36:04,532 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1569676505] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:36:04,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1499832186] [2022-11-03 02:36:04,532 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-03 02:36:04,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:36:04,533 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:36:04,537 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:36:04,541 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-03 02:36:04,612 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-03 02:36:04,612 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 02:36:04,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-03 02:36:04,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:36:05,349 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-03 02:36:05,349 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:36:06,822 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:36:06,823 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1499832186] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:36:06,823 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-03 02:36:06,823 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12, 12, 9, 10] total 35 [2022-11-03 02:36:06,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506882189] [2022-11-03 02:36:06,824 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-03 02:36:06,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-11-03 02:36:06,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:36:06,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-11-03 02:36:06,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=1092, Unknown=0, NotChecked=0, Total=1190 [2022-11-03 02:36:06,826 INFO L87 Difference]: Start difference. First operand 39 states and 47 transitions. Second operand has 35 states, 35 states have (on average 1.8571428571428572) internal successors, (65), 35 states have internal predecessors, (65), 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 02:36:21,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:36:21,024 INFO L93 Difference]: Finished difference Result 293 states and 358 transitions. [2022-11-03 02:36:21,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2022-11-03 02:36:21,024 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 1.8571428571428572) internal successors, (65), 35 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-11-03 02:36:21,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:36:21,027 INFO L225 Difference]: With dead ends: 293 [2022-11-03 02:36:21,027 INFO L226 Difference]: Without dead ends: 291 [2022-11-03 02:36:21,033 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 80 SyntacticMatches, 11 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2980 ImplicationChecksByTransitivity, 16.2s TimeCoverageRelationStatistics Valid=1324, Invalid=9388, Unknown=0, NotChecked=0, Total=10712 [2022-11-03 02:36:21,034 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 205 mSDsluCounter, 335 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 347 SdHoareTripleChecker+Invalid, 1086 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 801 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-03 02:36:21,034 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [205 Valid, 347 Invalid, 1086 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 235 Invalid, 0 Unknown, 801 Unchecked, 0.6s Time] [2022-11-03 02:36:21,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2022-11-03 02:36:21,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 144. [2022-11-03 02:36:21,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 143 states have (on average 1.2307692307692308) internal successors, (176), 143 states have internal predecessors, (176), 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 02:36:21,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 176 transitions. [2022-11-03 02:36:21,086 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 176 transitions. Word has length 19 [2022-11-03 02:36:21,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:36:21,086 INFO L495 AbstractCegarLoop]: Abstraction has 144 states and 176 transitions. [2022-11-03 02:36:21,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 1.8571428571428572) internal successors, (65), 35 states have internal predecessors, (65), 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 02:36:21,087 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 176 transitions. [2022-11-03 02:36:21,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-03 02:36:21,089 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:36:21,089 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2022-11-03 02:36:21,117 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-03 02:36:21,303 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-11-03 02:36:21,495 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (14)] Forceful destruction successful, exit code 0 [2022-11-03 02:36:21,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt [2022-11-03 02:36:21,694 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:36:21,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:36:21,694 INFO L85 PathProgramCache]: Analyzing trace with hash 631167547, now seen corresponding path program 3 times [2022-11-03 02:36:21,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:36:21,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1167130821] [2022-11-03 02:36:21,695 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-03 02:36:21,695 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:36:21,695 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:36:21,697 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:36:21,700 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-11-03 02:36:21,777 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-03 02:36:21,777 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 02:36:21,782 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 02:36:21,784 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:36:21,971 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-03 02:36:21,972 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:36:22,274 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 8 proven. 10 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-03 02:36:22,274 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:36:22,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1167130821] [2022-11-03 02:36:22,275 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1167130821] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:36:22,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [166299082] [2022-11-03 02:36:22,275 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-03 02:36:22,275 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:36:22,275 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:36:22,277 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:36:22,301 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2022-11-03 02:36:22,454 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-03 02:36:22,454 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 02:36:22,457 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 02:36:22,459 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:36:22,554 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-03 02:36:22,555 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:36:22,761 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 8 proven. 10 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-03 02:36:22,761 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [166299082] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:36:22,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [878034367] [2022-11-03 02:36:22,762 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-03 02:36:22,762 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:36:22,762 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:36:22,765 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:36:22,793 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-03 02:36:22,853 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-03 02:36:22,854 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 02:36:22,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 02:36:22,858 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:36:22,958 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-03 02:36:22,958 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:36:23,126 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 8 proven. 10 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-03 02:36:23,126 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [878034367] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:36:23,127 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-03 02:36:23,127 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 7, 7, 7] total 12 [2022-11-03 02:36:23,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793385899] [2022-11-03 02:36:23,127 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-03 02:36:23,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-03 02:36:23,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:36:23,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-03 02:36:23,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2022-11-03 02:36:23,129 INFO L87 Difference]: Start difference. First operand 144 states and 176 transitions. Second operand has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 12 states have internal predecessors, (38), 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 02:36:23,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:36:23,187 INFO L93 Difference]: Finished difference Result 237 states and 290 transitions. [2022-11-03 02:36:23,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:36:23,188 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 12 states have internal predecessors, (38), 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 26 [2022-11-03 02:36:23,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:36:23,189 INFO L225 Difference]: With dead ends: 237 [2022-11-03 02:36:23,189 INFO L226 Difference]: Without dead ends: 113 [2022-11-03 02:36:23,190 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 138 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2022-11-03 02:36:23,191 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 2 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 11 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:36:23,192 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 32 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 11 Unchecked, 0.0s Time] [2022-11-03 02:36:23,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2022-11-03 02:36:23,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 111. [2022-11-03 02:36:23,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 110 states have (on average 1.1454545454545455) internal successors, (126), 110 states have internal predecessors, (126), 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 02:36:23,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 126 transitions. [2022-11-03 02:36:23,215 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 126 transitions. Word has length 26 [2022-11-03 02:36:23,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:36:23,215 INFO L495 AbstractCegarLoop]: Abstraction has 111 states and 126 transitions. [2022-11-03 02:36:23,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 12 states have internal predecessors, (38), 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 02:36:23,216 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 126 transitions. [2022-11-03 02:36:23,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-11-03 02:36:23,217 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:36:23,218 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1] [2022-11-03 02:36:23,260 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-11-03 02:36:23,443 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-11-03 02:36:23,635 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (17)] Ended with exit code 0 [2022-11-03 02:36:23,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt [2022-11-03 02:36:23,833 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:36:23,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:36:23,834 INFO L85 PathProgramCache]: Analyzing trace with hash -1058247671, now seen corresponding path program 4 times [2022-11-03 02:36:23,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:36:23,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1688040352] [2022-11-03 02:36:23,835 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-03 02:36:23,835 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:36:23,835 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:36:23,836 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:36:23,838 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-11-03 02:36:23,979 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-03 02:36:23,980 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 02:36:23,990 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 38 conjunts are in the unsatisfiable core [2022-11-03 02:36:23,993 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:36:24,830 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-03 02:36:24,831 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:36:29,669 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 02:36:29,669 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:36:29,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1688040352] [2022-11-03 02:36:29,669 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1688040352] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:36:29,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1603279507] [2022-11-03 02:36:29,670 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-03 02:36:29,670 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:36:29,670 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:36:29,673 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:36:29,681 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2022-11-03 02:36:29,852 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-03 02:36:29,852 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 02:36:29,855 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 38 conjunts are in the unsatisfiable core [2022-11-03 02:36:29,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:36:30,227 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-03 02:36:30,228 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:36:30,735 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 02:36:30,736 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1603279507] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:36:30,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [446203421] [2022-11-03 02:36:30,736 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-03 02:36:30,736 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:36:30,736 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:36:30,737 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:36:30,739 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-11-03 02:36:30,824 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-03 02:36:30,824 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 02:36:30,827 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 42 conjunts are in the unsatisfiable core [2022-11-03 02:36:30,829 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:36:32,400 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-03 02:36:32,400 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:36:33,365 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 1 proven. 44 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-03 02:36:33,365 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [446203421] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:36:33,365 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-03 02:36:33,365 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 19, 15, 19, 15, 17] total 45 [2022-11-03 02:36:33,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388549726] [2022-11-03 02:36:33,366 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-03 02:36:33,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-11-03 02:36:33,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:36:33,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-11-03 02:36:33,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=1800, Unknown=1, NotChecked=0, Total=1980 [2022-11-03 02:36:33,368 INFO L87 Difference]: Start difference. First operand 111 states and 126 transitions. Second operand has 45 states, 45 states have (on average 1.8222222222222222) internal successors, (82), 45 states have internal predecessors, (82), 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 02:36:37,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:36:37,343 INFO L93 Difference]: Finished difference Result 164 states and 187 transitions. [2022-11-03 02:36:37,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-03 02:36:37,344 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 1.8222222222222222) internal successors, (82), 45 states have internal predecessors, (82), 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 33 [2022-11-03 02:36:37,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:36:37,346 INFO L225 Difference]: With dead ends: 164 [2022-11-03 02:36:37,346 INFO L226 Difference]: Without dead ends: 162 [2022-11-03 02:36:37,347 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 145 SyntacticMatches, 12 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1330 ImplicationChecksByTransitivity, 10.1s TimeCoverageRelationStatistics Valid=628, Invalid=3793, Unknown=1, NotChecked=0, Total=4422 [2022-11-03 02:36:37,348 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 159 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 517 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 319 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:36:37,348 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 175 Invalid, 517 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 164 Invalid, 0 Unknown, 319 Unchecked, 0.3s Time] [2022-11-03 02:36:37,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2022-11-03 02:36:37,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 89. [2022-11-03 02:36:37,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 88 states have (on average 1.1477272727272727) internal successors, (101), 88 states have internal predecessors, (101), 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 02:36:37,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 101 transitions. [2022-11-03 02:36:37,369 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 101 transitions. Word has length 33 [2022-11-03 02:36:37,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:36:37,370 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 101 transitions. [2022-11-03 02:36:37,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 1.8222222222222222) internal successors, (82), 45 states have internal predecessors, (82), 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 02:36:37,371 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 101 transitions. [2022-11-03 02:36:37,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-11-03 02:36:37,372 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:36:37,372 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1] [2022-11-03 02:36:37,381 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (20)] Forceful destruction successful, exit code 0 [2022-11-03 02:36:37,585 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-11-03 02:36:37,803 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-11-03 02:36:37,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:36:37,976 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:36:37,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:36:37,977 INFO L85 PathProgramCache]: Analyzing trace with hash -1468409079, now seen corresponding path program 5 times [2022-11-03 02:36:37,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:36:37,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [264888017] [2022-11-03 02:36:37,978 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-03 02:36:37,978 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:36:37,978 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:36:37,979 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:36:37,981 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-11-03 02:36:38,103 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-11-03 02:36:38,103 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 02:36:38,111 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 38 conjunts are in the unsatisfiable core [2022-11-03 02:36:38,113 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:36:38,686 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-03 02:36:38,687 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:36:39,656 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-03 02:36:39,656 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:36:39,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [264888017] [2022-11-03 02:36:39,656 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [264888017] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:36:39,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [469179043] [2022-11-03 02:36:39,657 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-03 02:36:39,657 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:36:39,657 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:36:39,661 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:36:39,670 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2022-11-03 02:36:39,877 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-11-03 02:36:39,877 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 02:36:39,881 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 38 conjunts are in the unsatisfiable core [2022-11-03 02:36:39,882 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:36:40,256 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-03 02:36:40,257 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:36:40,710 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-03 02:36:40,710 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [469179043] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:36:40,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [719873256] [2022-11-03 02:36:40,711 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-03 02:36:40,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:36:40,711 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:36:40,713 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:36:40,737 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-11-03 02:36:40,863 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-11-03 02:36:40,864 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 02:36:40,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 42 conjunts are in the unsatisfiable core [2022-11-03 02:36:40,870 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:36:41,842 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-03 02:36:41,842 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:36:42,670 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 2 proven. 26 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-03 02:36:42,670 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [719873256] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:36:42,670 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-03 02:36:42,670 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10, 10, 10, 10] total 28 [2022-11-03 02:36:42,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524524890] [2022-11-03 02:36:42,671 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-03 02:36:42,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-03 02:36:42,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:36:42,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-03 02:36:42,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=645, Unknown=0, NotChecked=0, Total=756 [2022-11-03 02:36:42,673 INFO L87 Difference]: Start difference. First operand 89 states and 101 transitions. Second operand has 28 states, 28 states have (on average 2.3214285714285716) internal successors, (65), 28 states have internal predecessors, (65), 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 02:36:44,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:36:44,311 INFO L93 Difference]: Finished difference Result 160 states and 180 transitions. [2022-11-03 02:36:44,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-03 02:36:44,312 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.3214285714285716) internal successors, (65), 28 states have internal predecessors, (65), 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 33 [2022-11-03 02:36:44,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:36:44,313 INFO L225 Difference]: With dead ends: 160 [2022-11-03 02:36:44,313 INFO L226 Difference]: Without dead ends: 158 [2022-11-03 02:36:44,314 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 153 SyntacticMatches, 17 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 624 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=347, Invalid=1633, Unknown=0, NotChecked=0, Total=1980 [2022-11-03 02:36:44,315 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 149 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 128 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:36:44,315 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 190 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 98 Invalid, 0 Unknown, 128 Unchecked, 0.2s Time] [2022-11-03 02:36:44,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2022-11-03 02:36:44,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 117. [2022-11-03 02:36:44,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 116 states have (on average 1.146551724137931) internal successors, (133), 116 states have internal predecessors, (133), 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 02:36:44,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 133 transitions. [2022-11-03 02:36:44,361 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 133 transitions. Word has length 33 [2022-11-03 02:36:44,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:36:44,361 INFO L495 AbstractCegarLoop]: Abstraction has 117 states and 133 transitions. [2022-11-03 02:36:44,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 2.3214285714285716) internal successors, (65), 28 states have internal predecessors, (65), 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 02:36:44,362 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 133 transitions. [2022-11-03 02:36:44,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-11-03 02:36:44,371 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:36:44,372 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1] [2022-11-03 02:36:44,375 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (23)] Forceful destruction successful, exit code 0 [2022-11-03 02:36:44,586 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2022-11-03 02:36:44,802 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-11-03 02:36:44,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:36:44,976 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:36:44,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:36:44,976 INFO L85 PathProgramCache]: Analyzing trace with hash 143399945, now seen corresponding path program 6 times [2022-11-03 02:36:44,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:36:44,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [124430962] [2022-11-03 02:36:44,977 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-03 02:36:44,977 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:36:44,977 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:36:44,978 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:36:44,981 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-11-03 02:36:45,094 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-11-03 02:36:45,094 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 02:36:45,100 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 38 conjunts are in the unsatisfiable core [2022-11-03 02:36:45,102 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:36:45,705 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-03 02:36:45,706 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:36:49,017 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-03 02:36:49,017 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:36:49,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [124430962] [2022-11-03 02:36:49,018 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [124430962] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:36:49,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1126692079] [2022-11-03 02:36:49,018 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-03 02:36:49,018 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:36:49,019 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:36:49,022 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:36:49,025 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (26)] Waiting until timeout for monitored process [2022-11-03 02:36:49,221 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-11-03 02:36:49,221 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 02:36:49,225 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 38 conjunts are in the unsatisfiable core [2022-11-03 02:36:49,228 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:36:49,604 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-03 02:36:49,604 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:36:50,093 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-03 02:36:50,093 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1126692079] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:36:50,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1666775393] [2022-11-03 02:36:50,093 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-03 02:36:50,093 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:36:50,093 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:36:50,094 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:36:50,096 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-11-03 02:36:50,194 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-11-03 02:36:50,194 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 02:36:50,198 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 38 conjunts are in the unsatisfiable core [2022-11-03 02:36:50,199 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:36:50,568 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-03 02:36:50,569 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:36:51,044 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-03 02:36:51,044 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1666775393] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:36:51,044 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-03 02:36:51,045 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12, 12, 12, 12] total 22 [2022-11-03 02:36:51,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329154915] [2022-11-03 02:36:51,045 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-03 02:36:51,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-03 02:36:51,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:36:51,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-03 02:36:51,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=401, Unknown=1, NotChecked=0, Total=462 [2022-11-03 02:36:51,047 INFO L87 Difference]: Start difference. First operand 117 states and 133 transitions. Second operand has 22 states, 22 states have (on average 2.1818181818181817) internal successors, (48), 22 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:36:52,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:36:52,699 INFO L93 Difference]: Finished difference Result 209 states and 233 transitions. [2022-11-03 02:36:52,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-03 02:36:52,700 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.1818181818181817) internal successors, (48), 22 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-11-03 02:36:52,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:36:52,702 INFO L225 Difference]: With dead ends: 209 [2022-11-03 02:36:52,702 INFO L226 Difference]: Without dead ends: 207 [2022-11-03 02:36:52,703 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 165 SyntacticMatches, 11 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=282, Invalid=1049, Unknown=1, NotChecked=0, Total=1332 [2022-11-03 02:36:52,704 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 89 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 121 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:36:52,706 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 145 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 97 Invalid, 0 Unknown, 121 Unchecked, 0.2s Time] [2022-11-03 02:36:52,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2022-11-03 02:36:52,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 137. [2022-11-03 02:36:52,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 136 states have (on average 1.1323529411764706) internal successors, (154), 136 states have internal predecessors, (154), 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 02:36:52,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 154 transitions. [2022-11-03 02:36:52,756 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 154 transitions. Word has length 33 [2022-11-03 02:36:52,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:36:52,759 INFO L495 AbstractCegarLoop]: Abstraction has 137 states and 154 transitions. [2022-11-03 02:36:52,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.1818181818181817) internal successors, (48), 22 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:36:52,759 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 154 transitions. [2022-11-03 02:36:52,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-11-03 02:36:52,765 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:36:52,765 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 3, 3, 2, 2, 1, 1, 1, 1] [2022-11-03 02:36:52,815 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-11-03 02:36:53,006 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2022-11-03 02:36:53,191 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (26)] Forceful destruction successful, exit code 0 [2022-11-03 02:36:53,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt [2022-11-03 02:36:53,389 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:36:53,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:36:53,390 INFO L85 PathProgramCache]: Analyzing trace with hash -1629996099, now seen corresponding path program 7 times [2022-11-03 02:36:53,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:36:53,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1300245605] [2022-11-03 02:36:53,391 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-03 02:36:53,391 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:36:53,391 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:36:53,393 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:36:53,398 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2022-11-03 02:36:53,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:36:53,528 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 47 conjunts are in the unsatisfiable core [2022-11-03 02:36:53,530 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:36:54,585 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 65 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-03 02:36:54,585 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:36:56,607 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-03 02:36:56,608 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:36:56,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1300245605] [2022-11-03 02:36:56,608 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1300245605] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:36:56,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1646392648] [2022-11-03 02:36:56,608 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-03 02:36:56,608 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:36:56,609 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:36:56,610 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:36:56,612 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (29)] Waiting until timeout for monitored process [2022-11-03 02:36:56,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:36:56,859 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 47 conjunts are in the unsatisfiable core [2022-11-03 02:36:56,861 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:36:57,528 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 65 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-03 02:36:57,528 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:36:58,292 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-03 02:36:58,293 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1646392648] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:36:58,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [550660189] [2022-11-03 02:36:58,293 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-03 02:36:58,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:36:58,294 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:36:58,295 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:36:58,317 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-11-03 02:36:58,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:36:58,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 50 conjunts are in the unsatisfiable core [2022-11-03 02:36:58,402 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:36:59,126 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 65 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-03 02:36:59,126 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:37:00,073 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-03 02:37:00,074 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [550660189] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:37:00,074 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-03 02:37:00,074 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14, 13, 14, 14, 15] total 27 [2022-11-03 02:37:00,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051031162] [2022-11-03 02:37:00,074 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-03 02:37:00,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-11-03 02:37:00,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:37:00,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-11-03 02:37:00,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=614, Unknown=0, NotChecked=0, Total=702 [2022-11-03 02:37:00,076 INFO L87 Difference]: Start difference. First operand 137 states and 154 transitions. Second operand has 27 states, 27 states have (on average 2.3703703703703702) internal successors, (64), 27 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 02:37:06,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:37:06,031 INFO L93 Difference]: Finished difference Result 341 states and 384 transitions. [2022-11-03 02:37:06,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-03 02:37:06,033 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.3703703703703702) internal successors, (64), 27 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 40 [2022-11-03 02:37:06,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:37:06,035 INFO L225 Difference]: With dead ends: 341 [2022-11-03 02:37:06,036 INFO L226 Difference]: Without dead ends: 339 [2022-11-03 02:37:06,037 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 192 SyntacticMatches, 20 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 808 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=569, Invalid=2737, Unknown=0, NotChecked=0, Total=3306 [2022-11-03 02:37:06,038 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 177 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 258 SdHoareTripleChecker+Invalid, 401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 249 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:37:06,038 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 258 Invalid, 401 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 130 Invalid, 0 Unknown, 249 Unchecked, 0.3s Time] [2022-11-03 02:37:06,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2022-11-03 02:37:06,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 226. [2022-11-03 02:37:06,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 225 states have (on average 1.1333333333333333) internal successors, (255), 225 states have internal predecessors, (255), 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 02:37:06,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 255 transitions. [2022-11-03 02:37:06,082 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 255 transitions. Word has length 40 [2022-11-03 02:37:06,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:37:06,082 INFO L495 AbstractCegarLoop]: Abstraction has 226 states and 255 transitions. [2022-11-03 02:37:06,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.3703703703703702) internal successors, (64), 27 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 02:37:06,083 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 255 transitions. [2022-11-03 02:37:06,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-11-03 02:37:06,083 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:37:06,084 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 3, 3, 2, 2, 1, 1, 1, 1] [2022-11-03 02:37:06,088 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (29)] Forceful destruction successful, exit code 0 [2022-11-03 02:37:06,315 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2022-11-03 02:37:06,497 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2022-11-03 02:37:06,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:37:06,688 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:37:06,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:37:06,688 INFO L85 PathProgramCache]: Analyzing trace with hash 1550825917, now seen corresponding path program 8 times [2022-11-03 02:37:06,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:37:06,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1502358987] [2022-11-03 02:37:06,689 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-03 02:37:06,689 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:37:06,689 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:37:06,690 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:37:06,694 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2022-11-03 02:37:06,804 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-03 02:37:06,804 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 02:37:06,813 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 47 conjunts are in the unsatisfiable core [2022-11-03 02:37:06,815 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:37:07,897 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 68 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-03 02:37:07,897 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:37:10,540 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-03 02:37:10,541 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:37:10,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1502358987] [2022-11-03 02:37:10,541 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1502358987] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:37:10,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [139712483] [2022-11-03 02:37:10,541 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-03 02:37:10,541 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:37:10,541 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:37:10,543 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:37:10,544 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (32)] Waiting until timeout for monitored process [2022-11-03 02:37:10,730 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-03 02:37:10,730 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 02:37:10,733 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 47 conjunts are in the unsatisfiable core [2022-11-03 02:37:10,735 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:37:11,353 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 68 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-03 02:37:11,353 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:37:12,107 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-03 02:37:12,107 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [139712483] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:37:12,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [759443328] [2022-11-03 02:37:12,108 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-03 02:37:12,108 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:37:12,108 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:37:12,109 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:37:12,110 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-11-03 02:37:12,192 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-03 02:37:12,193 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 02:37:12,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 47 conjunts are in the unsatisfiable core [2022-11-03 02:37:12,198 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:37:12,812 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 68 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-03 02:37:12,813 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:37:13,599 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-03 02:37:13,599 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [759443328] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:37:13,599 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-03 02:37:13,600 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 17, 15, 17, 15, 17] total 30 [2022-11-03 02:37:13,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509983700] [2022-11-03 02:37:13,601 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-03 02:37:13,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-03 02:37:13,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:37:13,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-03 02:37:13,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=776, Unknown=0, NotChecked=0, Total=870 [2022-11-03 02:37:13,603 INFO L87 Difference]: Start difference. First operand 226 states and 255 transitions. Second operand has 30 states, 30 states have (on average 2.3666666666666667) internal successors, (71), 30 states have internal predecessors, (71), 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 02:37:18,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:37:18,674 INFO L93 Difference]: Finished difference Result 442 states and 498 transitions. [2022-11-03 02:37:18,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-03 02:37:18,678 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.3666666666666667) internal successors, (71), 30 states have internal predecessors, (71), 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 40 [2022-11-03 02:37:18,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:37:18,680 INFO L225 Difference]: With dead ends: 442 [2022-11-03 02:37:18,680 INFO L226 Difference]: Without dead ends: 440 [2022-11-03 02:37:18,682 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 197 SyntacticMatches, 14 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 721 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=517, Invalid=3023, Unknown=0, NotChecked=0, Total=3540 [2022-11-03 02:37:18,682 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 162 mSDsluCounter, 264 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 285 SdHoareTripleChecker+Invalid, 618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 421 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:37:18,683 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 285 Invalid, 618 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 175 Invalid, 0 Unknown, 421 Unchecked, 0.3s Time] [2022-11-03 02:37:18,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2022-11-03 02:37:18,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 199. [2022-11-03 02:37:18,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 198 states have (on average 1.1313131313131313) internal successors, (224), 198 states have internal predecessors, (224), 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 02:37:18,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 224 transitions. [2022-11-03 02:37:18,738 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 224 transitions. Word has length 40 [2022-11-03 02:37:18,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:37:18,739 INFO L495 AbstractCegarLoop]: Abstraction has 199 states and 224 transitions. [2022-11-03 02:37:18,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 2.3666666666666667) internal successors, (71), 30 states have internal predecessors, (71), 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 02:37:18,739 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 224 transitions. [2022-11-03 02:37:18,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-11-03 02:37:18,740 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:37:18,740 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1] [2022-11-03 02:37:18,745 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (32)] Forceful destruction successful, exit code 0 [2022-11-03 02:37:18,965 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2022-11-03 02:37:19,151 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2022-11-03 02:37:19,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:37:19,341 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:37:19,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:37:19,342 INFO L85 PathProgramCache]: Analyzing trace with hash -1984132983, now seen corresponding path program 9 times [2022-11-03 02:37:19,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:37:19,342 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [661952064] [2022-11-03 02:37:19,342 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-03 02:37:19,342 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:37:19,342 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:37:19,343 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:37:19,345 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2022-11-03 02:37:19,498 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2022-11-03 02:37:19,498 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2022-11-03 02:37:19,498 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-03 02:37:19,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-03 02:37:19,692 INFO L130 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2022-11-03 02:37:19,692 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-03 02:37:19,693 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-03 02:37:19,717 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2022-11-03 02:37:19,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:37:19,908 INFO L444 BasicCegarLoop]: Path program histogram: [9, 1, 1, 1, 1] [2022-11-03 02:37:19,912 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-03 02:37:19,988 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-03 02:37:20,001 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-03 02:37:20,001 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-03 02:37:20,001 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-03 02:37:20,001 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-03 02:37:20,001 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-03 02:37:20,001 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-03 02:37:20,020 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 02:37:20 BoogieIcfgContainer [2022-11-03 02:37:20,028 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-03 02:37:20,029 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-03 02:37:20,030 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-03 02:37:20,030 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-03 02:37:20,031 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:35:43" (3/4) ... [2022-11-03 02:37:20,033 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-11-03 02:37:20,074 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-03 02:37:20,074 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-03 02:37:20,074 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-03 02:37:20,075 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-03 02:37:20,075 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-03 02:37:20,075 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-03 02:37:20,075 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-03 02:37:20,183 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/bin/utaipan-7li7fVZpFI/witness.graphml [2022-11-03 02:37:20,183 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-03 02:37:20,184 INFO L158 Benchmark]: Toolchain (without parser) took 98057.18ms. Allocated memory was 56.6MB in the beginning and 132.1MB in the end (delta: 75.5MB). Free memory was 32.8MB in the beginning and 57.5MB in the end (delta: -24.7MB). Peak memory consumption was 49.1MB. Max. memory is 16.1GB. [2022-11-03 02:37:20,184 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 56.6MB. Free memory is still 36.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 02:37:20,184 INFO L158 Benchmark]: CACSL2BoogieTranslator took 387.74ms. Allocated memory is still 56.6MB. Free memory was 32.7MB in the beginning and 38.5MB in the end (delta: -5.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-03 02:37:20,185 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.48ms. Allocated memory is still 56.6MB. Free memory was 38.5MB in the beginning and 37.0MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 02:37:20,185 INFO L158 Benchmark]: Boogie Preprocessor took 30.96ms. Allocated memory is still 56.6MB. Free memory was 37.0MB in the beginning and 35.7MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-03 02:37:20,186 INFO L158 Benchmark]: RCFGBuilder took 547.24ms. Allocated memory is still 56.6MB. Free memory was 35.7MB in the beginning and 24.5MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-03 02:37:20,186 INFO L158 Benchmark]: TraceAbstraction took 96873.86ms. Allocated memory was 56.6MB in the beginning and 132.1MB in the end (delta: 75.5MB). Free memory was 23.9MB in the beginning and 67.0MB in the end (delta: -43.0MB). Peak memory consumption was 35.3MB. Max. memory is 16.1GB. [2022-11-03 02:37:20,187 INFO L158 Benchmark]: Witness Printer took 153.64ms. Allocated memory is still 132.1MB. Free memory was 67.0MB in the beginning and 57.5MB in the end (delta: 9.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-03 02:37:20,189 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 56.6MB. Free memory is still 36.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 387.74ms. Allocated memory is still 56.6MB. Free memory was 32.7MB in the beginning and 38.5MB in the end (delta: -5.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 40.48ms. Allocated memory is still 56.6MB. Free memory was 38.5MB in the beginning and 37.0MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 30.96ms. Allocated memory is still 56.6MB. Free memory was 37.0MB in the beginning and 35.7MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 547.24ms. Allocated memory is still 56.6MB. Free memory was 35.7MB in the beginning and 24.5MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 96873.86ms. Allocated memory was 56.6MB in the beginning and 132.1MB in the end (delta: 75.5MB). Free memory was 23.9MB in the beginning and 67.0MB in the end (delta: -43.0MB). Peak memory consumption was 35.3MB. Max. memory is 16.1GB. * Witness Printer took 153.64ms. Allocated memory is still 132.1MB. Free memory was 67.0MB in the beginning and 57.5MB in the end (delta: 9.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 21]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L26] const SORT_1 mask_SORT_1 = (SORT_1)-1 >> (sizeof(SORT_1) * 8 - 1); [L27] const SORT_1 msb_SORT_1 = (SORT_1)1 << (1 - 1); [L29] const SORT_2 mask_SORT_2 = (SORT_2)-1 >> (sizeof(SORT_2) * 8 - 32); [L30] const SORT_2 msb_SORT_2 = (SORT_2)1 << (32 - 1); [L32] const SORT_2 var_4 = 0; [L33] const SORT_2 var_9 = 1; [L34] const SORT_2 var_16 = 3; [L36] SORT_1 input_3; [L38] SORT_2 state_5 = __VERIFIER_nondet_uint() & mask_SORT_2; [L39] SORT_2 state_6 = __VERIFIER_nondet_uint() & mask_SORT_2; [L41] SORT_2 init_7_arg_1 = var_4; [L42] state_5 = init_7_arg_1 [L43] SORT_2 init_8_arg_1 = var_4; [L44] state_6 = init_8_arg_1 VAL [init_7_arg_1=0, init_8_arg_1=0, mask_SORT_1=1, mask_SORT_2=4294967295, msb_SORT_1=1, msb_SORT_2=2147483648, state_5=0, state_6=0, var_16=3, var_4=0, var_9=1] [L47] input_3 = __VERIFIER_nondet_uchar() [L48] input_3 = input_3 & mask_SORT_1 [L51] SORT_2 var_17_arg_0 = state_5; [L52] SORT_2 var_17_arg_1 = var_16; [L53] SORT_1 var_17 = var_17_arg_0 == var_17_arg_1; [L54] SORT_2 var_18_arg_0 = state_6; [L55] SORT_2 var_18_arg_1 = var_16; [L56] SORT_1 var_18 = var_18_arg_0 == var_18_arg_1; [L57] SORT_1 var_19_arg_0 = var_17; [L58] SORT_1 var_19_arg_1 = var_18; [L59] SORT_1 var_19 = var_19_arg_0 & var_19_arg_1; [L60] var_19 = var_19 & mask_SORT_1 [L61] SORT_1 bad_20_arg_0 = var_19; [L62] CALL __VERIFIER_assert(!(bad_20_arg_0)) [L21] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L62] RET __VERIFIER_assert(!(bad_20_arg_0)) [L64] SORT_2 var_10_arg_0 = state_5; [L65] SORT_2 var_10_arg_1 = var_9; [L66] SORT_2 var_10 = var_10_arg_0 + var_10_arg_1; [L67] SORT_1 var_12_arg_0 = input_3; [L68] SORT_2 var_12_arg_1 = state_5; [L69] SORT_2 var_12_arg_2 = var_10; VAL [bad_20_arg_0=0, init_7_arg_1=0, init_8_arg_1=0, input_3=1, mask_SORT_1=1, mask_SORT_2=4294967295, msb_SORT_1=1, msb_SORT_2=2147483648, state_5=0, state_6=0, var_10=1, var_10_arg_0=0, var_10_arg_1=1, var_12_arg_0=1, var_12_arg_1=0, var_12_arg_2=1, var_16=3, var_17=0, var_17_arg_0=0, var_17_arg_1=3, var_18=0, var_18_arg_0=0, var_18_arg_1=3, var_19=0, var_19_arg_0=0, var_19_arg_1=0, var_4=0, var_9=1] [L70] EXPR var_12_arg_0 ? var_12_arg_1 : var_12_arg_2 VAL [bad_20_arg_0=0, init_7_arg_1=0, init_8_arg_1=0, input_3=1, mask_SORT_1=1, mask_SORT_2=4294967295, msb_SORT_1=1, msb_SORT_2=2147483648, state_5=0, state_6=0, var_10=1, var_10_arg_0=0, var_10_arg_1=1, var_12_arg_0=1, var_12_arg_0 ? var_12_arg_1 : var_12_arg_2=0, var_12_arg_1=0, var_12_arg_2=1, var_16=3, var_17=0, var_17_arg_0=0, var_17_arg_1=3, var_18=0, var_18_arg_0=0, var_18_arg_1=3, var_19=0, var_19_arg_0=0, var_19_arg_1=0, var_4=0, var_9=1] [L70] SORT_2 var_12 = var_12_arg_0 ? var_12_arg_1 : var_12_arg_2; [L71] var_12 = var_12 & mask_SORT_2 [L72] SORT_2 next_14_arg_1 = var_12; [L73] SORT_2 var_11_arg_0 = state_6; [L74] SORT_2 var_11_arg_1 = var_9; [L75] SORT_2 var_11 = var_11_arg_0 + var_11_arg_1; [L76] SORT_1 var_13_arg_0 = ~input_3; [L77] var_13_arg_0 = var_13_arg_0 & mask_SORT_1 [L78] SORT_2 var_13_arg_1 = state_6; [L79] SORT_2 var_13_arg_2 = var_11; VAL [bad_20_arg_0=0, init_7_arg_1=0, init_8_arg_1=0, input_3=1, mask_SORT_1=1, mask_SORT_2=4294967295, msb_SORT_1=1, msb_SORT_2=2147483648, next_14_arg_1=0, state_5=0, state_6=0, var_10=1, var_10_arg_0=0, var_10_arg_1=1, var_11=1, var_11_arg_0=0, var_11_arg_1=1, var_12=0, var_12_arg_0=1, var_12_arg_1=0, var_12_arg_2=1, var_13_arg_0=0, var_13_arg_1=0, var_13_arg_2=1, var_16=3, var_17=0, var_17_arg_0=0, var_17_arg_1=3, var_18=0, var_18_arg_0=0, var_18_arg_1=3, var_19=0, var_19_arg_0=0, var_19_arg_1=0, var_4=0, var_9=1] [L80] EXPR var_13_arg_0 ? var_13_arg_1 : var_13_arg_2 VAL [bad_20_arg_0=0, init_7_arg_1=0, init_8_arg_1=0, input_3=1, mask_SORT_1=1, mask_SORT_2=4294967295, msb_SORT_1=1, msb_SORT_2=2147483648, next_14_arg_1=0, state_5=0, state_6=0, var_10=1, var_10_arg_0=0, var_10_arg_1=1, var_11=1, var_11_arg_0=0, var_11_arg_1=1, var_12=0, var_12_arg_0=1, var_12_arg_1=0, var_12_arg_2=1, var_13_arg_0=0, var_13_arg_0 ? var_13_arg_1 : var_13_arg_2=1, var_13_arg_1=0, var_13_arg_2=1, var_16=3, var_17=0, var_17_arg_0=0, var_17_arg_1=3, var_18=0, var_18_arg_0=0, var_18_arg_1=3, var_19=0, var_19_arg_0=0, var_19_arg_1=0, var_4=0, var_9=1] [L80] SORT_2 var_13 = var_13_arg_0 ? var_13_arg_1 : var_13_arg_2; [L81] var_13 = var_13 & mask_SORT_2 [L82] SORT_2 next_15_arg_1 = var_13; [L84] state_5 = next_14_arg_1 [L85] state_6 = next_15_arg_1 VAL [bad_20_arg_0=0, init_7_arg_1=0, init_8_arg_1=0, input_3=1, mask_SORT_1=1, mask_SORT_2=4294967295, msb_SORT_1=1, msb_SORT_2=2147483648, next_14_arg_1=0, next_15_arg_1=1, state_5=0, state_6=1, var_10=1, var_10_arg_0=0, var_10_arg_1=1, var_11=1, var_11_arg_0=0, var_11_arg_1=1, var_12=0, var_12_arg_0=1, var_12_arg_1=0, var_12_arg_2=1, var_13=1, var_13_arg_0=0, var_13_arg_1=0, var_13_arg_2=1, var_16=3, var_17=0, var_17_arg_0=0, var_17_arg_1=3, var_18=0, var_18_arg_0=0, var_18_arg_1=3, var_19=0, var_19_arg_0=0, var_19_arg_1=0, var_4=0, var_9=1] [L47] input_3 = __VERIFIER_nondet_uchar() [L48] input_3 = input_3 & mask_SORT_1 [L51] SORT_2 var_17_arg_0 = state_5; [L52] SORT_2 var_17_arg_1 = var_16; [L53] SORT_1 var_17 = var_17_arg_0 == var_17_arg_1; [L54] SORT_2 var_18_arg_0 = state_6; [L55] SORT_2 var_18_arg_1 = var_16; [L56] SORT_1 var_18 = var_18_arg_0 == var_18_arg_1; [L57] SORT_1 var_19_arg_0 = var_17; [L58] SORT_1 var_19_arg_1 = var_18; [L59] SORT_1 var_19 = var_19_arg_0 & var_19_arg_1; [L60] var_19 = var_19 & mask_SORT_1 [L61] SORT_1 bad_20_arg_0 = var_19; [L62] CALL __VERIFIER_assert(!(bad_20_arg_0)) [L21] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L62] RET __VERIFIER_assert(!(bad_20_arg_0)) [L64] SORT_2 var_10_arg_0 = state_5; [L65] SORT_2 var_10_arg_1 = var_9; [L66] SORT_2 var_10 = var_10_arg_0 + var_10_arg_1; [L67] SORT_1 var_12_arg_0 = input_3; [L68] SORT_2 var_12_arg_1 = state_5; [L69] SORT_2 var_12_arg_2 = var_10; VAL [bad_20_arg_0=0, init_7_arg_1=0, init_8_arg_1=0, input_3=1, mask_SORT_1=1, mask_SORT_2=4294967295, msb_SORT_1=1, msb_SORT_2=2147483648, next_14_arg_1=0, next_15_arg_1=1, state_5=0, state_6=1, var_10=1, var_10_arg_0=0, var_10_arg_1=1, var_11=1, var_11_arg_0=0, var_11_arg_1=1, var_12=0, var_12_arg_0=1, var_12_arg_1=0, var_12_arg_2=1, var_13=1, var_13_arg_0=0, var_13_arg_1=0, var_13_arg_2=1, var_16=3, var_17=0, var_17_arg_0=0, var_17_arg_1=3, var_18=0, var_18_arg_0=1, var_18_arg_1=3, var_19=0, var_19_arg_0=0, var_19_arg_1=0, var_4=0, var_9=1] [L70] EXPR var_12_arg_0 ? var_12_arg_1 : var_12_arg_2 VAL [bad_20_arg_0=0, init_7_arg_1=0, init_8_arg_1=0, input_3=1, mask_SORT_1=1, mask_SORT_2=4294967295, msb_SORT_1=1, msb_SORT_2=2147483648, next_14_arg_1=0, next_15_arg_1=1, state_5=0, state_6=1, var_10=1, var_10_arg_0=0, var_10_arg_1=1, var_11=1, var_11_arg_0=0, var_11_arg_1=1, var_12=0, var_12_arg_0=1, var_12_arg_0 ? var_12_arg_1 : var_12_arg_2=0, var_12_arg_1=0, var_12_arg_2=1, var_13=1, var_13_arg_0=0, var_13_arg_1=0, var_13_arg_2=1, var_16=3, var_17=0, var_17_arg_0=0, var_17_arg_1=3, var_18=0, var_18_arg_0=1, var_18_arg_1=3, var_19=0, var_19_arg_0=0, var_19_arg_1=0, var_4=0, var_9=1] [L70] SORT_2 var_12 = var_12_arg_0 ? var_12_arg_1 : var_12_arg_2; [L71] var_12 = var_12 & mask_SORT_2 [L72] SORT_2 next_14_arg_1 = var_12; [L73] SORT_2 var_11_arg_0 = state_6; [L74] SORT_2 var_11_arg_1 = var_9; [L75] SORT_2 var_11 = var_11_arg_0 + var_11_arg_1; [L76] SORT_1 var_13_arg_0 = ~input_3; [L77] var_13_arg_0 = var_13_arg_0 & mask_SORT_1 [L78] SORT_2 var_13_arg_1 = state_6; [L79] SORT_2 var_13_arg_2 = var_11; VAL [bad_20_arg_0=0, init_7_arg_1=0, init_8_arg_1=0, input_3=1, mask_SORT_1=1, mask_SORT_2=4294967295, msb_SORT_1=1, msb_SORT_2=2147483648, next_14_arg_1=0, next_15_arg_1=1, state_5=0, state_6=1, var_10=1, var_10_arg_0=0, var_10_arg_1=1, var_11=2, var_11_arg_0=1, var_11_arg_1=1, var_12=0, var_12_arg_0=1, var_12_arg_1=0, var_12_arg_2=1, var_13=1, var_13_arg_0=0, var_13_arg_1=1, var_13_arg_2=2, var_16=3, var_17=0, var_17_arg_0=0, var_17_arg_1=3, var_18=0, var_18_arg_0=1, var_18_arg_1=3, var_19=0, var_19_arg_0=0, var_19_arg_1=0, var_4=0, var_9=1] [L80] EXPR var_13_arg_0 ? var_13_arg_1 : var_13_arg_2 VAL [bad_20_arg_0=0, init_7_arg_1=0, init_8_arg_1=0, input_3=1, mask_SORT_1=1, mask_SORT_2=4294967295, msb_SORT_1=1, msb_SORT_2=2147483648, next_14_arg_1=0, next_15_arg_1=1, state_5=0, state_6=1, var_10=1, var_10_arg_0=0, var_10_arg_1=1, var_11=2, var_11_arg_0=1, var_11_arg_1=1, var_12=0, var_12_arg_0=1, var_12_arg_1=0, var_12_arg_2=1, var_13=1, var_13_arg_0=0, var_13_arg_0 ? var_13_arg_1 : var_13_arg_2=2, var_13_arg_1=1, var_13_arg_2=2, var_16=3, var_17=0, var_17_arg_0=0, var_17_arg_1=3, var_18=0, var_18_arg_0=1, var_18_arg_1=3, var_19=0, var_19_arg_0=0, var_19_arg_1=0, var_4=0, var_9=1] [L80] SORT_2 var_13 = var_13_arg_0 ? var_13_arg_1 : var_13_arg_2; [L81] var_13 = var_13 & mask_SORT_2 [L82] SORT_2 next_15_arg_1 = var_13; [L84] state_5 = next_14_arg_1 [L85] state_6 = next_15_arg_1 VAL [bad_20_arg_0=0, init_7_arg_1=0, init_8_arg_1=0, input_3=1, mask_SORT_1=1, mask_SORT_2=4294967295, msb_SORT_1=1, msb_SORT_2=2147483648, next_14_arg_1=0, next_15_arg_1=2, state_5=0, state_6=2, var_10=1, var_10_arg_0=0, var_10_arg_1=1, var_11=2, var_11_arg_0=1, var_11_arg_1=1, var_12=0, var_12_arg_0=1, var_12_arg_1=0, var_12_arg_2=1, var_13=2, var_13_arg_0=0, var_13_arg_1=1, var_13_arg_2=2, var_16=3, var_17=0, var_17_arg_0=0, var_17_arg_1=3, var_18=0, var_18_arg_0=1, var_18_arg_1=3, var_19=0, var_19_arg_0=0, var_19_arg_1=0, var_4=0, var_9=1] [L47] input_3 = __VERIFIER_nondet_uchar() [L48] input_3 = input_3 & mask_SORT_1 [L51] SORT_2 var_17_arg_0 = state_5; [L52] SORT_2 var_17_arg_1 = var_16; [L53] SORT_1 var_17 = var_17_arg_0 == var_17_arg_1; [L54] SORT_2 var_18_arg_0 = state_6; [L55] SORT_2 var_18_arg_1 = var_16; [L56] SORT_1 var_18 = var_18_arg_0 == var_18_arg_1; [L57] SORT_1 var_19_arg_0 = var_17; [L58] SORT_1 var_19_arg_1 = var_18; [L59] SORT_1 var_19 = var_19_arg_0 & var_19_arg_1; [L60] var_19 = var_19 & mask_SORT_1 [L61] SORT_1 bad_20_arg_0 = var_19; [L62] CALL __VERIFIER_assert(!(bad_20_arg_0)) [L21] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L62] RET __VERIFIER_assert(!(bad_20_arg_0)) [L64] SORT_2 var_10_arg_0 = state_5; [L65] SORT_2 var_10_arg_1 = var_9; [L66] SORT_2 var_10 = var_10_arg_0 + var_10_arg_1; [L67] SORT_1 var_12_arg_0 = input_3; [L68] SORT_2 var_12_arg_1 = state_5; [L69] SORT_2 var_12_arg_2 = var_10; VAL [bad_20_arg_0=0, init_7_arg_1=0, init_8_arg_1=0, input_3=1, mask_SORT_1=1, mask_SORT_2=4294967295, msb_SORT_1=1, msb_SORT_2=2147483648, next_14_arg_1=0, next_15_arg_1=2, state_5=0, state_6=2, var_10=1, var_10_arg_0=0, var_10_arg_1=1, var_11=2, var_11_arg_0=1, var_11_arg_1=1, var_12=0, var_12_arg_0=1, var_12_arg_1=0, var_12_arg_2=1, var_13=2, var_13_arg_0=0, var_13_arg_1=1, var_13_arg_2=2, var_16=3, var_17=0, var_17_arg_0=0, var_17_arg_1=3, var_18=0, var_18_arg_0=2, var_18_arg_1=3, var_19=0, var_19_arg_0=0, var_19_arg_1=0, var_4=0, var_9=1] [L70] EXPR var_12_arg_0 ? var_12_arg_1 : var_12_arg_2 VAL [bad_20_arg_0=0, init_7_arg_1=0, init_8_arg_1=0, input_3=1, mask_SORT_1=1, mask_SORT_2=4294967295, msb_SORT_1=1, msb_SORT_2=2147483648, next_14_arg_1=0, next_15_arg_1=2, state_5=0, state_6=2, var_10=1, var_10_arg_0=0, var_10_arg_1=1, var_11=2, var_11_arg_0=1, var_11_arg_1=1, var_12=0, var_12_arg_0=1, var_12_arg_0 ? var_12_arg_1 : var_12_arg_2=0, var_12_arg_1=0, var_12_arg_2=1, var_13=2, var_13_arg_0=0, var_13_arg_1=1, var_13_arg_2=2, var_16=3, var_17=0, var_17_arg_0=0, var_17_arg_1=3, var_18=0, var_18_arg_0=2, var_18_arg_1=3, var_19=0, var_19_arg_0=0, var_19_arg_1=0, var_4=0, var_9=1] [L70] SORT_2 var_12 = var_12_arg_0 ? var_12_arg_1 : var_12_arg_2; [L71] var_12 = var_12 & mask_SORT_2 [L72] SORT_2 next_14_arg_1 = var_12; [L73] SORT_2 var_11_arg_0 = state_6; [L74] SORT_2 var_11_arg_1 = var_9; [L75] SORT_2 var_11 = var_11_arg_0 + var_11_arg_1; [L76] SORT_1 var_13_arg_0 = ~input_3; [L77] var_13_arg_0 = var_13_arg_0 & mask_SORT_1 [L78] SORT_2 var_13_arg_1 = state_6; [L79] SORT_2 var_13_arg_2 = var_11; VAL [bad_20_arg_0=0, init_7_arg_1=0, init_8_arg_1=0, input_3=1, mask_SORT_1=1, mask_SORT_2=4294967295, msb_SORT_1=1, msb_SORT_2=2147483648, next_14_arg_1=0, next_15_arg_1=2, state_5=0, state_6=2, var_10=1, var_10_arg_0=0, var_10_arg_1=1, var_11=3, var_11_arg_0=2, var_11_arg_1=1, var_12=0, var_12_arg_0=1, var_12_arg_1=0, var_12_arg_2=1, var_13=2, var_13_arg_0=0, var_13_arg_1=2, var_13_arg_2=3, var_16=3, var_17=0, var_17_arg_0=0, var_17_arg_1=3, var_18=0, var_18_arg_0=2, var_18_arg_1=3, var_19=0, var_19_arg_0=0, var_19_arg_1=0, var_4=0, var_9=1] [L80] EXPR var_13_arg_0 ? var_13_arg_1 : var_13_arg_2 VAL [bad_20_arg_0=0, init_7_arg_1=0, init_8_arg_1=0, input_3=1, mask_SORT_1=1, mask_SORT_2=4294967295, msb_SORT_1=1, msb_SORT_2=2147483648, next_14_arg_1=0, next_15_arg_1=2, state_5=0, state_6=2, var_10=1, var_10_arg_0=0, var_10_arg_1=1, var_11=3, var_11_arg_0=2, var_11_arg_1=1, var_12=0, var_12_arg_0=1, var_12_arg_1=0, var_12_arg_2=1, var_13=2, var_13_arg_0=0, var_13_arg_0 ? var_13_arg_1 : var_13_arg_2=3, var_13_arg_1=2, var_13_arg_2=3, var_16=3, var_17=0, var_17_arg_0=0, var_17_arg_1=3, var_18=0, var_18_arg_0=2, var_18_arg_1=3, var_19=0, var_19_arg_0=0, var_19_arg_1=0, var_4=0, var_9=1] [L80] SORT_2 var_13 = var_13_arg_0 ? var_13_arg_1 : var_13_arg_2; [L81] var_13 = var_13 & mask_SORT_2 [L82] SORT_2 next_15_arg_1 = var_13; [L84] state_5 = next_14_arg_1 [L85] state_6 = next_15_arg_1 VAL [bad_20_arg_0=0, init_7_arg_1=0, init_8_arg_1=0, input_3=1, mask_SORT_1=1, mask_SORT_2=4294967295, msb_SORT_1=1, msb_SORT_2=2147483648, next_14_arg_1=0, next_15_arg_1=3, state_5=0, state_6=3, var_10=1, var_10_arg_0=0, var_10_arg_1=1, var_11=3, var_11_arg_0=2, var_11_arg_1=1, var_12=0, var_12_arg_0=1, var_12_arg_1=0, var_12_arg_2=1, var_13=3, var_13_arg_0=0, var_13_arg_1=2, var_13_arg_2=3, var_16=3, var_17=0, var_17_arg_0=0, var_17_arg_1=3, var_18=0, var_18_arg_0=2, var_18_arg_1=3, var_19=0, var_19_arg_0=0, var_19_arg_1=0, var_4=0, var_9=1] [L47] input_3 = __VERIFIER_nondet_uchar() [L48] input_3 = input_3 & mask_SORT_1 [L51] SORT_2 var_17_arg_0 = state_5; [L52] SORT_2 var_17_arg_1 = var_16; [L53] SORT_1 var_17 = var_17_arg_0 == var_17_arg_1; [L54] SORT_2 var_18_arg_0 = state_6; [L55] SORT_2 var_18_arg_1 = var_16; [L56] SORT_1 var_18 = var_18_arg_0 == var_18_arg_1; [L57] SORT_1 var_19_arg_0 = var_17; [L58] SORT_1 var_19_arg_1 = var_18; [L59] SORT_1 var_19 = var_19_arg_0 & var_19_arg_1; [L60] var_19 = var_19 & mask_SORT_1 [L61] SORT_1 bad_20_arg_0 = var_19; [L62] CALL __VERIFIER_assert(!(bad_20_arg_0)) [L21] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L62] RET __VERIFIER_assert(!(bad_20_arg_0)) [L64] SORT_2 var_10_arg_0 = state_5; [L65] SORT_2 var_10_arg_1 = var_9; [L66] SORT_2 var_10 = var_10_arg_0 + var_10_arg_1; [L67] SORT_1 var_12_arg_0 = input_3; [L68] SORT_2 var_12_arg_1 = state_5; [L69] SORT_2 var_12_arg_2 = var_10; VAL [bad_20_arg_0=0, init_7_arg_1=0, init_8_arg_1=0, input_3=0, mask_SORT_1=1, mask_SORT_2=4294967295, msb_SORT_1=1, msb_SORT_2=2147483648, next_14_arg_1=0, next_15_arg_1=3, state_5=0, state_6=3, var_10=1, var_10_arg_0=0, var_10_arg_1=1, var_11=3, var_11_arg_0=2, var_11_arg_1=1, var_12=0, var_12_arg_0=0, var_12_arg_1=0, var_12_arg_2=1, var_13=3, var_13_arg_0=0, var_13_arg_1=2, var_13_arg_2=3, var_16=3, var_17=0, var_17_arg_0=0, var_17_arg_1=3, var_18=1, var_18_arg_0=3, var_18_arg_1=3, var_19=0, var_19_arg_0=0, var_19_arg_1=1, var_4=0, var_9=1] [L70] EXPR var_12_arg_0 ? var_12_arg_1 : var_12_arg_2 VAL [bad_20_arg_0=0, init_7_arg_1=0, init_8_arg_1=0, input_3=0, mask_SORT_1=1, mask_SORT_2=4294967295, msb_SORT_1=1, msb_SORT_2=2147483648, next_14_arg_1=0, next_15_arg_1=3, state_5=0, state_6=3, var_10=1, var_10_arg_0=0, var_10_arg_1=1, var_11=3, var_11_arg_0=2, var_11_arg_1=1, var_12=0, var_12_arg_0=0, var_12_arg_0 ? var_12_arg_1 : var_12_arg_2=1, var_12_arg_1=0, var_12_arg_2=1, var_13=3, var_13_arg_0=0, var_13_arg_1=2, var_13_arg_2=3, var_16=3, var_17=0, var_17_arg_0=0, var_17_arg_1=3, var_18=1, var_18_arg_0=3, var_18_arg_1=3, var_19=0, var_19_arg_0=0, var_19_arg_1=1, var_4=0, var_9=1] [L70] SORT_2 var_12 = var_12_arg_0 ? var_12_arg_1 : var_12_arg_2; [L71] var_12 = var_12 & mask_SORT_2 [L72] SORT_2 next_14_arg_1 = var_12; [L73] SORT_2 var_11_arg_0 = state_6; [L74] SORT_2 var_11_arg_1 = var_9; [L75] SORT_2 var_11 = var_11_arg_0 + var_11_arg_1; [L76] SORT_1 var_13_arg_0 = ~input_3; [L77] var_13_arg_0 = var_13_arg_0 & mask_SORT_1 [L78] SORT_2 var_13_arg_1 = state_6; [L79] SORT_2 var_13_arg_2 = var_11; VAL [bad_20_arg_0=0, init_7_arg_1=0, init_8_arg_1=0, input_3=0, mask_SORT_1=1, mask_SORT_2=4294967295, msb_SORT_1=1, msb_SORT_2=2147483648, next_14_arg_1=1, next_15_arg_1=3, state_5=0, state_6=3, var_10=1, var_10_arg_0=0, var_10_arg_1=1, var_11=4, var_11_arg_0=3, var_11_arg_1=1, var_12=1, var_12_arg_0=0, var_12_arg_1=0, var_12_arg_2=1, var_13=3, var_13_arg_0=1, var_13_arg_1=3, var_13_arg_2=4, var_16=3, var_17=0, var_17_arg_0=0, var_17_arg_1=3, var_18=1, var_18_arg_0=3, var_18_arg_1=3, var_19=0, var_19_arg_0=0, var_19_arg_1=1, var_4=0, var_9=1] [L80] EXPR var_13_arg_0 ? var_13_arg_1 : var_13_arg_2 VAL [bad_20_arg_0=0, init_7_arg_1=0, init_8_arg_1=0, input_3=0, mask_SORT_1=1, mask_SORT_2=4294967295, msb_SORT_1=1, msb_SORT_2=2147483648, next_14_arg_1=1, next_15_arg_1=3, state_5=0, state_6=3, var_10=1, var_10_arg_0=0, var_10_arg_1=1, var_11=4, var_11_arg_0=3, var_11_arg_1=1, var_12=1, var_12_arg_0=0, var_12_arg_1=0, var_12_arg_2=1, var_13=3, var_13_arg_0=1, var_13_arg_0 ? var_13_arg_1 : var_13_arg_2=3, var_13_arg_1=3, var_13_arg_2=4, var_16=3, var_17=0, var_17_arg_0=0, var_17_arg_1=3, var_18=1, var_18_arg_0=3, var_18_arg_1=3, var_19=0, var_19_arg_0=0, var_19_arg_1=1, var_4=0, var_9=1] [L80] SORT_2 var_13 = var_13_arg_0 ? var_13_arg_1 : var_13_arg_2; [L81] var_13 = var_13 & mask_SORT_2 [L82] SORT_2 next_15_arg_1 = var_13; [L84] state_5 = next_14_arg_1 [L85] state_6 = next_15_arg_1 VAL [bad_20_arg_0=0, init_7_arg_1=0, init_8_arg_1=0, input_3=0, mask_SORT_1=1, mask_SORT_2=4294967295, msb_SORT_1=1, msb_SORT_2=2147483648, next_14_arg_1=1, next_15_arg_1=3, state_5=1, state_6=3, var_10=1, var_10_arg_0=0, var_10_arg_1=1, var_11=4, var_11_arg_0=3, var_11_arg_1=1, var_12=1, var_12_arg_0=0, var_12_arg_1=0, var_12_arg_2=1, var_13=3, var_13_arg_0=1, var_13_arg_1=3, var_13_arg_2=4, var_16=3, var_17=0, var_17_arg_0=0, var_17_arg_1=3, var_18=1, var_18_arg_0=3, var_18_arg_1=3, var_19=0, var_19_arg_0=0, var_19_arg_1=1, var_4=0, var_9=1] [L47] input_3 = __VERIFIER_nondet_uchar() [L48] input_3 = input_3 & mask_SORT_1 [L51] SORT_2 var_17_arg_0 = state_5; [L52] SORT_2 var_17_arg_1 = var_16; [L53] SORT_1 var_17 = var_17_arg_0 == var_17_arg_1; [L54] SORT_2 var_18_arg_0 = state_6; [L55] SORT_2 var_18_arg_1 = var_16; [L56] SORT_1 var_18 = var_18_arg_0 == var_18_arg_1; [L57] SORT_1 var_19_arg_0 = var_17; [L58] SORT_1 var_19_arg_1 = var_18; [L59] SORT_1 var_19 = var_19_arg_0 & var_19_arg_1; [L60] var_19 = var_19 & mask_SORT_1 [L61] SORT_1 bad_20_arg_0 = var_19; [L62] CALL __VERIFIER_assert(!(bad_20_arg_0)) [L21] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L62] RET __VERIFIER_assert(!(bad_20_arg_0)) [L64] SORT_2 var_10_arg_0 = state_5; [L65] SORT_2 var_10_arg_1 = var_9; [L66] SORT_2 var_10 = var_10_arg_0 + var_10_arg_1; [L67] SORT_1 var_12_arg_0 = input_3; [L68] SORT_2 var_12_arg_1 = state_5; [L69] SORT_2 var_12_arg_2 = var_10; VAL [bad_20_arg_0=0, init_7_arg_1=0, init_8_arg_1=0, input_3=0, mask_SORT_1=1, mask_SORT_2=4294967295, msb_SORT_1=1, msb_SORT_2=2147483648, next_14_arg_1=1, next_15_arg_1=3, state_5=1, state_6=3, var_10=2, var_10_arg_0=1, var_10_arg_1=1, var_11=4, var_11_arg_0=3, var_11_arg_1=1, var_12=1, var_12_arg_0=0, var_12_arg_1=1, var_12_arg_2=2, var_13=3, var_13_arg_0=1, var_13_arg_1=3, var_13_arg_2=4, var_16=3, var_17=0, var_17_arg_0=1, var_17_arg_1=3, var_18=1, var_18_arg_0=3, var_18_arg_1=3, var_19=0, var_19_arg_0=0, var_19_arg_1=1, var_4=0, var_9=1] [L70] EXPR var_12_arg_0 ? var_12_arg_1 : var_12_arg_2 VAL [bad_20_arg_0=0, init_7_arg_1=0, init_8_arg_1=0, input_3=0, mask_SORT_1=1, mask_SORT_2=4294967295, msb_SORT_1=1, msb_SORT_2=2147483648, next_14_arg_1=1, next_15_arg_1=3, state_5=1, state_6=3, var_10=2, var_10_arg_0=1, var_10_arg_1=1, var_11=4, var_11_arg_0=3, var_11_arg_1=1, var_12=1, var_12_arg_0=0, var_12_arg_0 ? var_12_arg_1 : var_12_arg_2=2, var_12_arg_1=1, var_12_arg_2=2, var_13=3, var_13_arg_0=1, var_13_arg_1=3, var_13_arg_2=4, var_16=3, var_17=0, var_17_arg_0=1, var_17_arg_1=3, var_18=1, var_18_arg_0=3, var_18_arg_1=3, var_19=0, var_19_arg_0=0, var_19_arg_1=1, var_4=0, var_9=1] [L70] SORT_2 var_12 = var_12_arg_0 ? var_12_arg_1 : var_12_arg_2; [L71] var_12 = var_12 & mask_SORT_2 [L72] SORT_2 next_14_arg_1 = var_12; [L73] SORT_2 var_11_arg_0 = state_6; [L74] SORT_2 var_11_arg_1 = var_9; [L75] SORT_2 var_11 = var_11_arg_0 + var_11_arg_1; [L76] SORT_1 var_13_arg_0 = ~input_3; [L77] var_13_arg_0 = var_13_arg_0 & mask_SORT_1 [L78] SORT_2 var_13_arg_1 = state_6; [L79] SORT_2 var_13_arg_2 = var_11; VAL [bad_20_arg_0=0, init_7_arg_1=0, init_8_arg_1=0, input_3=0, mask_SORT_1=1, mask_SORT_2=4294967295, msb_SORT_1=1, msb_SORT_2=2147483648, next_14_arg_1=2, next_15_arg_1=3, state_5=1, state_6=3, var_10=2, var_10_arg_0=1, var_10_arg_1=1, var_11=4, var_11_arg_0=3, var_11_arg_1=1, var_12=2, var_12_arg_0=0, var_12_arg_1=1, var_12_arg_2=2, var_13=3, var_13_arg_0=1, var_13_arg_1=3, var_13_arg_2=4, var_16=3, var_17=0, var_17_arg_0=1, var_17_arg_1=3, var_18=1, var_18_arg_0=3, var_18_arg_1=3, var_19=0, var_19_arg_0=0, var_19_arg_1=1, var_4=0, var_9=1] [L80] EXPR var_13_arg_0 ? var_13_arg_1 : var_13_arg_2 VAL [bad_20_arg_0=0, init_7_arg_1=0, init_8_arg_1=0, input_3=0, mask_SORT_1=1, mask_SORT_2=4294967295, msb_SORT_1=1, msb_SORT_2=2147483648, next_14_arg_1=2, next_15_arg_1=3, state_5=1, state_6=3, var_10=2, var_10_arg_0=1, var_10_arg_1=1, var_11=4, var_11_arg_0=3, var_11_arg_1=1, var_12=2, var_12_arg_0=0, var_12_arg_1=1, var_12_arg_2=2, var_13=3, var_13_arg_0=1, var_13_arg_0 ? var_13_arg_1 : var_13_arg_2=3, var_13_arg_1=3, var_13_arg_2=4, var_16=3, var_17=0, var_17_arg_0=1, var_17_arg_1=3, var_18=1, var_18_arg_0=3, var_18_arg_1=3, var_19=0, var_19_arg_0=0, var_19_arg_1=1, var_4=0, var_9=1] [L80] SORT_2 var_13 = var_13_arg_0 ? var_13_arg_1 : var_13_arg_2; [L81] var_13 = var_13 & mask_SORT_2 [L82] SORT_2 next_15_arg_1 = var_13; [L84] state_5 = next_14_arg_1 [L85] state_6 = next_15_arg_1 VAL [bad_20_arg_0=0, init_7_arg_1=0, init_8_arg_1=0, input_3=0, mask_SORT_1=1, mask_SORT_2=4294967295, msb_SORT_1=1, msb_SORT_2=2147483648, next_14_arg_1=2, next_15_arg_1=3, state_5=2, state_6=3, var_10=2, var_10_arg_0=1, var_10_arg_1=1, var_11=4, var_11_arg_0=3, var_11_arg_1=1, var_12=2, var_12_arg_0=0, var_12_arg_1=1, var_12_arg_2=2, var_13=3, var_13_arg_0=1, var_13_arg_1=3, var_13_arg_2=4, var_16=3, var_17=0, var_17_arg_0=1, var_17_arg_1=3, var_18=1, var_18_arg_0=3, var_18_arg_1=3, var_19=0, var_19_arg_0=0, var_19_arg_1=1, var_4=0, var_9=1] [L47] input_3 = __VERIFIER_nondet_uchar() [L48] input_3 = input_3 & mask_SORT_1 [L51] SORT_2 var_17_arg_0 = state_5; [L52] SORT_2 var_17_arg_1 = var_16; [L53] SORT_1 var_17 = var_17_arg_0 == var_17_arg_1; [L54] SORT_2 var_18_arg_0 = state_6; [L55] SORT_2 var_18_arg_1 = var_16; [L56] SORT_1 var_18 = var_18_arg_0 == var_18_arg_1; [L57] SORT_1 var_19_arg_0 = var_17; [L58] SORT_1 var_19_arg_1 = var_18; [L59] SORT_1 var_19 = var_19_arg_0 & var_19_arg_1; [L60] var_19 = var_19 & mask_SORT_1 [L61] SORT_1 bad_20_arg_0 = var_19; [L62] CALL __VERIFIER_assert(!(bad_20_arg_0)) [L21] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L62] RET __VERIFIER_assert(!(bad_20_arg_0)) [L64] SORT_2 var_10_arg_0 = state_5; [L65] SORT_2 var_10_arg_1 = var_9; [L66] SORT_2 var_10 = var_10_arg_0 + var_10_arg_1; [L67] SORT_1 var_12_arg_0 = input_3; [L68] SORT_2 var_12_arg_1 = state_5; [L69] SORT_2 var_12_arg_2 = var_10; VAL [bad_20_arg_0=0, init_7_arg_1=0, init_8_arg_1=0, input_3=0, mask_SORT_1=1, mask_SORT_2=4294967295, msb_SORT_1=1, msb_SORT_2=2147483648, next_14_arg_1=2, next_15_arg_1=3, state_5=2, state_6=3, var_10=3, var_10_arg_0=2, var_10_arg_1=1, var_11=4, var_11_arg_0=3, var_11_arg_1=1, var_12=2, var_12_arg_0=0, var_12_arg_1=2, var_12_arg_2=3, var_13=3, var_13_arg_0=1, var_13_arg_1=3, var_13_arg_2=4, var_16=3, var_17=0, var_17_arg_0=2, var_17_arg_1=3, var_18=1, var_18_arg_0=3, var_18_arg_1=3, var_19=0, var_19_arg_0=0, var_19_arg_1=1, var_4=0, var_9=1] [L70] EXPR var_12_arg_0 ? var_12_arg_1 : var_12_arg_2 VAL [bad_20_arg_0=0, init_7_arg_1=0, init_8_arg_1=0, input_3=0, mask_SORT_1=1, mask_SORT_2=4294967295, msb_SORT_1=1, msb_SORT_2=2147483648, next_14_arg_1=2, next_15_arg_1=3, state_5=2, state_6=3, var_10=3, var_10_arg_0=2, var_10_arg_1=1, var_11=4, var_11_arg_0=3, var_11_arg_1=1, var_12=2, var_12_arg_0=0, var_12_arg_0 ? var_12_arg_1 : var_12_arg_2=3, var_12_arg_1=2, var_12_arg_2=3, var_13=3, var_13_arg_0=1, var_13_arg_1=3, var_13_arg_2=4, var_16=3, var_17=0, var_17_arg_0=2, var_17_arg_1=3, var_18=1, var_18_arg_0=3, var_18_arg_1=3, var_19=0, var_19_arg_0=0, var_19_arg_1=1, var_4=0, var_9=1] [L70] SORT_2 var_12 = var_12_arg_0 ? var_12_arg_1 : var_12_arg_2; [L71] var_12 = var_12 & mask_SORT_2 [L72] SORT_2 next_14_arg_1 = var_12; [L73] SORT_2 var_11_arg_0 = state_6; [L74] SORT_2 var_11_arg_1 = var_9; [L75] SORT_2 var_11 = var_11_arg_0 + var_11_arg_1; [L76] SORT_1 var_13_arg_0 = ~input_3; [L77] var_13_arg_0 = var_13_arg_0 & mask_SORT_1 [L78] SORT_2 var_13_arg_1 = state_6; [L79] SORT_2 var_13_arg_2 = var_11; VAL [bad_20_arg_0=0, init_7_arg_1=0, init_8_arg_1=0, input_3=0, mask_SORT_1=1, mask_SORT_2=4294967295, msb_SORT_1=1, msb_SORT_2=2147483648, next_14_arg_1=3, next_15_arg_1=3, state_5=2, state_6=3, var_10=3, var_10_arg_0=2, var_10_arg_1=1, var_11=4, var_11_arg_0=3, var_11_arg_1=1, var_12=3, var_12_arg_0=0, var_12_arg_1=2, var_12_arg_2=3, var_13=3, var_13_arg_0=1, var_13_arg_1=3, var_13_arg_2=4, var_16=3, var_17=0, var_17_arg_0=2, var_17_arg_1=3, var_18=1, var_18_arg_0=3, var_18_arg_1=3, var_19=0, var_19_arg_0=0, var_19_arg_1=1, var_4=0, var_9=1] [L80] EXPR var_13_arg_0 ? var_13_arg_1 : var_13_arg_2 VAL [bad_20_arg_0=0, init_7_arg_1=0, init_8_arg_1=0, input_3=0, mask_SORT_1=1, mask_SORT_2=4294967295, msb_SORT_1=1, msb_SORT_2=2147483648, next_14_arg_1=3, next_15_arg_1=3, state_5=2, state_6=3, var_10=3, var_10_arg_0=2, var_10_arg_1=1, var_11=4, var_11_arg_0=3, var_11_arg_1=1, var_12=3, var_12_arg_0=0, var_12_arg_1=2, var_12_arg_2=3, var_13=3, var_13_arg_0=1, var_13_arg_0 ? var_13_arg_1 : var_13_arg_2=3, var_13_arg_1=3, var_13_arg_2=4, var_16=3, var_17=0, var_17_arg_0=2, var_17_arg_1=3, var_18=1, var_18_arg_0=3, var_18_arg_1=3, var_19=0, var_19_arg_0=0, var_19_arg_1=1, var_4=0, var_9=1] [L80] SORT_2 var_13 = var_13_arg_0 ? var_13_arg_1 : var_13_arg_2; [L81] var_13 = var_13 & mask_SORT_2 [L82] SORT_2 next_15_arg_1 = var_13; [L84] state_5 = next_14_arg_1 [L85] state_6 = next_15_arg_1 VAL [bad_20_arg_0=0, init_7_arg_1=0, init_8_arg_1=0, input_3=0, mask_SORT_1=1, mask_SORT_2=4294967295, msb_SORT_1=1, msb_SORT_2=2147483648, next_14_arg_1=3, next_15_arg_1=3, state_5=3, state_6=3, var_10=3, var_10_arg_0=2, var_10_arg_1=1, var_11=4, var_11_arg_0=3, var_11_arg_1=1, var_12=3, var_12_arg_0=0, var_12_arg_1=2, var_12_arg_2=3, var_13=3, var_13_arg_0=1, var_13_arg_1=3, var_13_arg_2=4, var_16=3, var_17=0, var_17_arg_0=2, var_17_arg_1=3, var_18=1, var_18_arg_0=3, var_18_arg_1=3, var_19=0, var_19_arg_0=0, var_19_arg_1=1, var_4=0, var_9=1] [L47] input_3 = __VERIFIER_nondet_uchar() [L48] input_3 = input_3 & mask_SORT_1 [L51] SORT_2 var_17_arg_0 = state_5; [L52] SORT_2 var_17_arg_1 = var_16; [L53] SORT_1 var_17 = var_17_arg_0 == var_17_arg_1; [L54] SORT_2 var_18_arg_0 = state_6; [L55] SORT_2 var_18_arg_1 = var_16; [L56] SORT_1 var_18 = var_18_arg_0 == var_18_arg_1; [L57] SORT_1 var_19_arg_0 = var_17; [L58] SORT_1 var_19_arg_1 = var_18; [L59] SORT_1 var_19 = var_19_arg_0 & var_19_arg_1; [L60] var_19 = var_19 & mask_SORT_1 [L61] SORT_1 bad_20_arg_0 = var_19; [L62] CALL __VERIFIER_assert(!(bad_20_arg_0)) [L21] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L21] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 15 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 96.6s, OverallIterations: 13, TraceHistogramMax: 7, PathProgramHistogramMax: 9, EmptinessCheckTime: 0.0s, AutomataDifference: 37.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1198 SdHoareTripleChecker+Valid, 2.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1198 mSDsluCounter, 1835 SdHoareTripleChecker+Invalid, 2.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 2368 IncrementalHoareTripleChecker+Unchecked, 1684 mSDsCounter, 189 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1097 IncrementalHoareTripleChecker+Invalid, 3654 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 189 mSolverCounterUnsat, 151 mSDtfsCounter, 1097 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1824 GetRequests, 1247 SyntacticMatches, 95 SemanticMatches, 482 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 7673 ImplicationChecksByTransitivity, 61.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=226occurred in iteration=11, InterpolantAutomatonStates: 288, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 12 MinimizatonAttempts, 746 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.6s SsaConstructionTime, 2.3s SatisfiabilityAnalysisTime, 47.4s InterpolantComputationTime, 865 NumberOfCodeBlocks, 844 NumberOfCodeBlocksAsserted, 75 NumberOfCheckSat, 1557 ConstructedInterpolants, 702 QuantifiedInterpolants, 25010 SizeOfPredicates, 888 NumberOfNonLiveVariables, 4204 ConjunctsInSsa, 978 ConjunctsInUnsatCore, 62 InterpolantComputations, 2 PerfectInterpolantSequences, 500/2180 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 proved your program to be incorrect! [2022-11-03 02:37:20,266 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec94e0e-232e-4773-aac6-22f1052b544b/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 Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE