./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.safe_intersymbol_analog_estimation_convergence.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/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_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.safe_intersymbol_analog_estimation_convergence.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/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_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/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 df7f37b318c8d1f9d7b6d8bdd6b9d05156ce656d1a634258cfc85f6ce0601b19 --- 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 01:50:42,412 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 01:50:42,414 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 01:50:42,462 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 01:50:42,465 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 01:50:42,466 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 01:50:42,469 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 01:50:42,474 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 01:50:42,478 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 01:50:42,479 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 01:50:42,481 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 01:50:42,482 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 01:50:42,484 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 01:50:42,488 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 01:50:42,489 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 01:50:42,491 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 01:50:42,493 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 01:50:42,500 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 01:50:42,502 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 01:50:42,504 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 01:50:42,511 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 01:50:42,512 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 01:50:42,513 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 01:50:42,514 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 01:50:42,517 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 01:50:42,517 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 01:50:42,518 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 01:50:42,519 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 01:50:42,519 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 01:50:42,520 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 01:50:42,520 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 01:50:42,521 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 01:50:42,522 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 01:50:42,523 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 01:50:42,523 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 01:50:42,524 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 01:50:42,524 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 01:50:42,524 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 01:50:42,525 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 01:50:42,525 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 01:50:42,530 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 01:50:42,531 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-03 01:50:42,572 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 01:50:42,573 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 01:50:42,573 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 01:50:42,574 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 01:50:42,574 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 01:50:42,575 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 01:50:42,575 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 01:50:42,575 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 01:50:42,575 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 01:50:42,576 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 01:50:42,577 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 01:50:42,577 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 01:50:42,577 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 01:50:42,578 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 01:50:42,578 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 01:50:42,578 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 01:50:42,578 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 01:50:42,578 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 01:50:42,579 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 01:50:42,579 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 01:50:42,580 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 01:50:42,580 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 01:50:42,580 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 01:50:42,580 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 01:50:42,581 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 01:50:42,581 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 01:50:42,581 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 01:50:42,581 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 01:50:42,582 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 01:50:42,582 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 01:50:42,582 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 01:50:42,582 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 01:50:42,583 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 01:50:42,583 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 01:50:42,583 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 01:50:42,583 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 01:50:42,584 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 01:50:42,584 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 01:50:42,584 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_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> df7f37b318c8d1f9d7b6d8bdd6b9d05156ce656d1a634258cfc85f6ce0601b19 [2022-11-03 01:50:42,909 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 01:50:42,935 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 01:50:42,939 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 01:50:42,941 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 01:50:42,942 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 01:50:42,943 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.safe_intersymbol_analog_estimation_convergence.c [2022-11-03 01:50:43,019 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/data/7df89d4da/3cd2aa0bac004162a386d728bd2baffe/FLAG91a13853a [2022-11-03 01:50:43,528 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 01:50:43,529 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.safe_intersymbol_analog_estimation_convergence.c [2022-11-03 01:50:43,539 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/data/7df89d4da/3cd2aa0bac004162a386d728bd2baffe/FLAG91a13853a [2022-11-03 01:50:43,825 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/data/7df89d4da/3cd2aa0bac004162a386d728bd2baffe [2022-11-03 01:50:43,828 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 01:50:43,829 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 01:50:43,846 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 01:50:43,846 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 01:50:43,850 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 01:50:43,851 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:50:43" (1/1) ... [2022-11-03 01:50:43,852 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47e5332 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:50:43, skipping insertion in model container [2022-11-03 01:50:43,852 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:50:43" (1/1) ... [2022-11-03 01:50:43,859 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 01:50:43,901 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 01:50:44,058 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_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.safe_intersymbol_analog_estimation_convergence.c[1132,1145] [2022-11-03 01:50:44,322 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 01:50:44,329 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 01:50:44,343 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_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.safe_intersymbol_analog_estimation_convergence.c[1132,1145] [2022-11-03 01:50:44,475 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 01:50:44,488 INFO L208 MainTranslator]: Completed translation [2022-11-03 01:50:44,488 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:50:44 WrapperNode [2022-11-03 01:50:44,489 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 01:50:44,490 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 01:50:44,490 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 01:50:44,490 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 01:50:44,510 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:50:44" (1/1) ... [2022-11-03 01:50:44,553 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:50:44" (1/1) ... [2022-11-03 01:50:44,658 INFO L138 Inliner]: procedures = 11, calls = 5, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 735 [2022-11-03 01:50:44,658 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 01:50:44,659 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 01:50:44,659 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 01:50:44,659 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 01:50:44,669 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:50:44" (1/1) ... [2022-11-03 01:50:44,669 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:50:44" (1/1) ... [2022-11-03 01:50:44,681 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:50:44" (1/1) ... [2022-11-03 01:50:44,681 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:50:44" (1/1) ... [2022-11-03 01:50:44,729 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:50:44" (1/1) ... [2022-11-03 01:50:44,734 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:50:44" (1/1) ... [2022-11-03 01:50:44,755 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:50:44" (1/1) ... [2022-11-03 01:50:44,762 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:50:44" (1/1) ... [2022-11-03 01:50:44,781 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 01:50:44,783 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 01:50:44,784 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 01:50:44,784 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 01:50:44,785 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:50:44" (1/1) ... [2022-11-03 01:50:44,792 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 01:50:44,802 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:50:44,817 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 01:50:44,845 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 01:50:44,863 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 01:50:44,863 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 01:50:44,864 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-03 01:50:44,864 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-03 01:50:45,132 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 01:50:45,137 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 01:50:48,271 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 01:50:49,706 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 01:50:49,707 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-03 01:50:49,711 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:50:49 BoogieIcfgContainer [2022-11-03 01:50:49,711 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 01:50:49,715 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 01:50:49,715 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 01:50:49,721 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 01:50:49,721 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 01:50:43" (1/3) ... [2022-11-03 01:50:49,722 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53bf8fcd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:50:49, skipping insertion in model container [2022-11-03 01:50:49,722 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:50:44" (2/3) ... [2022-11-03 01:50:49,723 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53bf8fcd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:50:49, skipping insertion in model container [2022-11-03 01:50:49,723 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:50:49" (3/3) ... [2022-11-03 01:50:49,725 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.safe_intersymbol_analog_estimation_convergence.c [2022-11-03 01:50:49,747 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 01:50:49,748 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 01:50:49,819 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 01:50:49,825 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;@4668d31b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 01:50:49,825 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 01:50:49,829 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 8 states have (on average 1.375) internal successors, (11), 9 states have internal predecessors, (11), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 01:50:49,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-03 01:50:49,838 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:50:49,839 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:50:49,839 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:50:49,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:50:49,845 INFO L85 PathProgramCache]: Analyzing trace with hash 2016399067, now seen corresponding path program 1 times [2022-11-03 01:50:49,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:50:49,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876586227] [2022-11-03 01:50:49,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:50:49,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:51:00,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-03 01:51:00,028 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-03 01:51:04,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-03 01:51:04,848 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-03 01:51:04,850 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-03 01:51:04,851 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-03 01:51:04,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 01:51:04,858 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-03 01:51:04,864 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-03 01:51:04,935 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-03 01:51:04,959 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 01:51:04 BoogieIcfgContainer [2022-11-03 01:51:04,960 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-03 01:51:04,960 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-03 01:51:04,961 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-03 01:51:04,961 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-03 01:51:04,961 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:50:49" (3/4) ... [2022-11-03 01:51:04,964 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-03 01:51:04,965 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-03 01:51:04,966 INFO L158 Benchmark]: Toolchain (without parser) took 21136.51ms. Allocated memory was 86.0MB in the beginning and 941.6MB in the end (delta: 855.6MB). Free memory was 45.4MB in the beginning and 539.5MB in the end (delta: -494.1MB). Peak memory consumption was 361.6MB. Max. memory is 16.1GB. [2022-11-03 01:51:04,967 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 86.0MB. Free memory was 62.9MB in the beginning and 62.9MB in the end (delta: 49.2kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 01:51:04,967 INFO L158 Benchmark]: CACSL2BoogieTranslator took 642.82ms. Allocated memory is still 86.0MB. Free memory was 66.0MB in the beginning and 42.5MB in the end (delta: 23.5MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2022-11-03 01:51:04,968 INFO L158 Benchmark]: Boogie Procedure Inliner took 168.28ms. Allocated memory is still 86.0MB. Free memory was 42.3MB in the beginning and 53.3MB in the end (delta: -11.0MB). Peak memory consumption was 16.1MB. Max. memory is 16.1GB. [2022-11-03 01:51:04,969 INFO L158 Benchmark]: Boogie Preprocessor took 123.75ms. Allocated memory is still 86.0MB. Free memory was 53.3MB in the beginning and 45.5MB in the end (delta: 7.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-03 01:51:04,969 INFO L158 Benchmark]: RCFGBuilder took 4928.24ms. Allocated memory was 86.0MB in the beginning and 260.0MB in the end (delta: 174.1MB). Free memory was 45.5MB in the beginning and 90.6MB in the end (delta: -45.1MB). Peak memory consumption was 140.8MB. Max. memory is 16.1GB. [2022-11-03 01:51:04,970 INFO L158 Benchmark]: TraceAbstraction took 15245.35ms. Allocated memory was 260.0MB in the beginning and 941.6MB in the end (delta: 681.6MB). Free memory was 89.6MB in the beginning and 539.5MB in the end (delta: -449.9MB). Peak memory consumption was 435.1MB. Max. memory is 16.1GB. [2022-11-03 01:51:04,971 INFO L158 Benchmark]: Witness Printer took 4.46ms. Allocated memory is still 941.6MB. Free memory is still 539.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 01:51:04,974 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 86.0MB. Free memory was 62.9MB in the beginning and 62.9MB in the end (delta: 49.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 642.82ms. Allocated memory is still 86.0MB. Free memory was 66.0MB in the beginning and 42.5MB in the end (delta: 23.5MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 168.28ms. Allocated memory is still 86.0MB. Free memory was 42.3MB in the beginning and 53.3MB in the end (delta: -11.0MB). Peak memory consumption was 16.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 123.75ms. Allocated memory is still 86.0MB. Free memory was 53.3MB in the beginning and 45.5MB in the end (delta: 7.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 4928.24ms. Allocated memory was 86.0MB in the beginning and 260.0MB in the end (delta: 174.1MB). Free memory was 45.5MB in the beginning and 90.6MB in the end (delta: -45.1MB). Peak memory consumption was 140.8MB. Max. memory is 16.1GB. * TraceAbstraction took 15245.35ms. Allocated memory was 260.0MB in the beginning and 941.6MB in the end (delta: 681.6MB). Free memory was 89.6MB in the beginning and 539.5MB in the end (delta: -449.9MB). Peak memory consumption was 435.1MB. Max. memory is 16.1GB. * Witness Printer took 4.46ms. Allocated memory is still 941.6MB. Free memory is still 539.5MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 20]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseOr at line 201, overapproximation of bitwiseAnd at line 192, overapproximation of bitwiseComplement at line 198, overapproximation of bitwiseXOr at line 424. Possible FailurePath: [L25] const SORT_1 mask_SORT_1 = (SORT_1)-1 >> (sizeof(SORT_1) * 8 - 1); [L26] const SORT_1 msb_SORT_1 = (SORT_1)1 << (1 - 1); [L28] const SORT_9 mask_SORT_9 = (SORT_9)-1 >> (sizeof(SORT_9) * 8 - 31); [L29] const SORT_9 msb_SORT_9 = (SORT_9)1 << (31 - 1); [L31] const SORT_11 mask_SORT_11 = (SORT_11)-1 >> (sizeof(SORT_11) * 8 - 16); [L32] const SORT_11 msb_SORT_11 = (SORT_11)1 << (16 - 1); [L34] const SORT_12 mask_SORT_12 = (SORT_12)-1 >> (sizeof(SORT_12) * 8 - 3); [L35] const SORT_12 msb_SORT_12 = (SORT_12)1 << (3 - 1); [L37] const SORT_15 mask_SORT_15 = (SORT_15)-1 >> (sizeof(SORT_15) * 8 - 4); [L38] const SORT_15 msb_SORT_15 = (SORT_15)1 << (4 - 1); [L40] const SORT_17 mask_SORT_17 = (SORT_17)-1 >> (sizeof(SORT_17) * 8 - 5); [L41] const SORT_17 msb_SORT_17 = (SORT_17)1 << (5 - 1); [L43] const SORT_19 mask_SORT_19 = (SORT_19)-1 >> (sizeof(SORT_19) * 8 - 6); [L44] const SORT_19 msb_SORT_19 = (SORT_19)1 << (6 - 1); [L46] const SORT_21 mask_SORT_21 = (SORT_21)-1 >> (sizeof(SORT_21) * 8 - 7); [L47] const SORT_21 msb_SORT_21 = (SORT_21)1 << (7 - 1); [L49] const SORT_23 mask_SORT_23 = (SORT_23)-1 >> (sizeof(SORT_23) * 8 - 8); [L50] const SORT_23 msb_SORT_23 = (SORT_23)1 << (8 - 1); [L52] const SORT_25 mask_SORT_25 = (SORT_25)-1 >> (sizeof(SORT_25) * 8 - 9); [L53] const SORT_25 msb_SORT_25 = (SORT_25)1 << (9 - 1); [L55] const SORT_27 mask_SORT_27 = (SORT_27)-1 >> (sizeof(SORT_27) * 8 - 10); [L56] const SORT_27 msb_SORT_27 = (SORT_27)1 << (10 - 1); [L58] const SORT_29 mask_SORT_29 = (SORT_29)-1 >> (sizeof(SORT_29) * 8 - 11); [L59] const SORT_29 msb_SORT_29 = (SORT_29)1 << (11 - 1); [L61] const SORT_31 mask_SORT_31 = (SORT_31)-1 >> (sizeof(SORT_31) * 8 - 12); [L62] const SORT_31 msb_SORT_31 = (SORT_31)1 << (12 - 1); [L64] const SORT_33 mask_SORT_33 = (SORT_33)-1 >> (sizeof(SORT_33) * 8 - 13); [L65] const SORT_33 msb_SORT_33 = (SORT_33)1 << (13 - 1); [L67] const SORT_35 mask_SORT_35 = (SORT_35)-1 >> (sizeof(SORT_35) * 8 - 14); [L68] const SORT_35 msb_SORT_35 = (SORT_35)1 << (14 - 1); [L70] const SORT_37 mask_SORT_37 = (SORT_37)-1 >> (sizeof(SORT_37) * 8 - 15); [L71] const SORT_37 msb_SORT_37 = (SORT_37)1 << (15 - 1); [L73] const SORT_62 mask_SORT_62 = (SORT_62)-1 >> (sizeof(SORT_62) * 8 - 32); [L74] const SORT_62 msb_SORT_62 = (SORT_62)1 << (32 - 1); [L76] const SORT_65 mask_SORT_65 = (SORT_65)-1 >> (sizeof(SORT_65) * 8 - 17); [L77] const SORT_65 msb_SORT_65 = (SORT_65)1 << (17 - 1); [L79] const SORT_68 mask_SORT_68 = (SORT_68)-1 >> (sizeof(SORT_68) * 8 - 18); [L80] const SORT_68 msb_SORT_68 = (SORT_68)1 << (18 - 1); [L82] const SORT_71 mask_SORT_71 = (SORT_71)-1 >> (sizeof(SORT_71) * 8 - 19); [L83] const SORT_71 msb_SORT_71 = (SORT_71)1 << (19 - 1); [L85] const SORT_74 mask_SORT_74 = (SORT_74)-1 >> (sizeof(SORT_74) * 8 - 20); [L86] const SORT_74 msb_SORT_74 = (SORT_74)1 << (20 - 1); [L88] const SORT_77 mask_SORT_77 = (SORT_77)-1 >> (sizeof(SORT_77) * 8 - 21); [L89] const SORT_77 msb_SORT_77 = (SORT_77)1 << (21 - 1); [L91] const SORT_80 mask_SORT_80 = (SORT_80)-1 >> (sizeof(SORT_80) * 8 - 22); [L92] const SORT_80 msb_SORT_80 = (SORT_80)1 << (22 - 1); [L94] const SORT_83 mask_SORT_83 = (SORT_83)-1 >> (sizeof(SORT_83) * 8 - 23); [L95] const SORT_83 msb_SORT_83 = (SORT_83)1 << (23 - 1); [L97] const SORT_86 mask_SORT_86 = (SORT_86)-1 >> (sizeof(SORT_86) * 8 - 24); [L98] const SORT_86 msb_SORT_86 = (SORT_86)1 << (24 - 1); [L100] const SORT_89 mask_SORT_89 = (SORT_89)-1 >> (sizeof(SORT_89) * 8 - 25); [L101] const SORT_89 msb_SORT_89 = (SORT_89)1 << (25 - 1); [L103] const SORT_92 mask_SORT_92 = (SORT_92)-1 >> (sizeof(SORT_92) * 8 - 26); [L104] const SORT_92 msb_SORT_92 = (SORT_92)1 << (26 - 1); [L106] const SORT_95 mask_SORT_95 = (SORT_95)-1 >> (sizeof(SORT_95) * 8 - 27); [L107] const SORT_95 msb_SORT_95 = (SORT_95)1 << (27 - 1); [L109] const SORT_98 mask_SORT_98 = (SORT_98)-1 >> (sizeof(SORT_98) * 8 - 28); [L110] const SORT_98 msb_SORT_98 = (SORT_98)1 << (28 - 1); [L112] const SORT_101 mask_SORT_101 = (SORT_101)-1 >> (sizeof(SORT_101) * 8 - 29); [L113] const SORT_101 msb_SORT_101 = (SORT_101)1 << (29 - 1); [L115] const SORT_104 mask_SORT_104 = (SORT_104)-1 >> (sizeof(SORT_104) * 8 - 30); [L116] const SORT_104 msb_SORT_104 = (SORT_104)1 << (30 - 1); [L118] const SORT_153 mask_SORT_153 = (SORT_153)-1 >> (sizeof(SORT_153) * 8 - 2); [L119] const SORT_153 msb_SORT_153 = (SORT_153)1 << (2 - 1); [L121] const SORT_1 var_7 = 0; [L122] const SORT_1 var_8 = 1; [L123] const SORT_9 var_10 = 0; [L124] const SORT_12 var_13 = 4; [L125] const SORT_12 var_114 = 5; [L126] const SORT_11 var_116 = 0; [L127] const SORT_11 var_150 = 64; [L128] const SORT_153 var_154 = 1; [L129] const SORT_23 var_189 = 127; [L130] const SORT_11 var_197 = 1; [L131] const SORT_11 var_199 = 127; [L132] const SORT_12 var_247 = 6; [L133] const SORT_15 var_251 = 9; [L134] const SORT_21 var_269 = 64; [L135] const SORT_12 var_282 = 0; [L136] const SORT_15 var_285 = 0; [L138] SORT_1 input_2; [L139] SORT_1 input_3; [L140] SORT_1 input_4; [L142] SORT_1 state_5 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L143] SORT_1 state_40 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L144] SORT_11 state_56 = __VERIFIER_nondet_ushort() & mask_SORT_11; [L145] SORT_1 state_58 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L146] SORT_11 state_117 = __VERIFIER_nondet_ushort() & mask_SORT_11; [L147] SORT_15 state_137 = __VERIFIER_nondet_uchar() & mask_SORT_15; [L148] SORT_15 state_140 = __VERIFIER_nondet_uchar() & mask_SORT_15; [L149] SORT_11 state_144 = __VERIFIER_nondet_ushort() & mask_SORT_11; [L151] SORT_11 init_118_arg_1 = var_116; [L152] state_117 = init_118_arg_1 VAL [init_118_arg_1=0, mask_SORT_1=1, mask_SORT_101=4294967295, mask_SORT_104=4294967295, mask_SORT_11=65535, mask_SORT_12=7, mask_SORT_15=15, mask_SORT_153=3, mask_SORT_17=31, mask_SORT_19=63, mask_SORT_21=127, mask_SORT_23=255, mask_SORT_25=511, mask_SORT_27=1023, mask_SORT_29=2047, mask_SORT_31=4095, mask_SORT_33=8191, mask_SORT_35=16383, mask_SORT_37=32767, mask_SORT_62=4294967295, mask_SORT_65=4294967295, mask_SORT_68=4294967295, mask_SORT_71=4294967295, mask_SORT_74=4294967295, mask_SORT_77=4294967295, mask_SORT_80=4294967295, mask_SORT_83=4294967295, mask_SORT_86=4294967295, mask_SORT_89=4294967295, mask_SORT_9=4294967295, mask_SORT_92=4294967295, mask_SORT_95=4294967295, mask_SORT_98=4294967295, msb_SORT_1=1, msb_SORT_101=268435456, msb_SORT_104=536870912, msb_SORT_11=32768, msb_SORT_12=4, msb_SORT_15=8, msb_SORT_153=2, msb_SORT_17=16, msb_SORT_19=32, msb_SORT_21=64, msb_SORT_23=128, msb_SORT_25=256, msb_SORT_27=512, msb_SORT_29=1024, msb_SORT_31=2048, msb_SORT_33=4096, msb_SORT_35=8192, msb_SORT_37=16384, msb_SORT_62=2147483648, msb_SORT_65=65536, msb_SORT_68=131072, msb_SORT_71=262144, msb_SORT_74=524288, msb_SORT_77=1048576, msb_SORT_80=2097152, msb_SORT_83=4194304, msb_SORT_86=8388608, msb_SORT_89=16777216, msb_SORT_9=1073741824, msb_SORT_92=33554432, msb_SORT_95=67108864, msb_SORT_98=134217728, state_117=0, state_137=0, state_140=1, state_144=0, state_40=1, state_5=1, state_56=1, state_58=1, var_10=0, var_114=5, var_116=0, var_13=4, var_150=64, var_154=1, var_189=127, var_197=1, var_199=127, var_247=6, var_251=9, var_269=64, var_282=0, var_285=0, var_7=0, var_8=1] [L155] input_2 = __VERIFIER_nondet_uchar() [L156] input_3 = __VERIFIER_nondet_uchar() [L157] input_3 = input_3 & mask_SORT_1 [L158] input_4 = __VERIFIER_nondet_uchar() [L159] input_4 = input_4 & mask_SORT_1 [L161] SORT_1 var_125_arg_0 = state_5; [L162] SORT_1 var_125 = ~var_125_arg_0; [L163] SORT_1 var_126_arg_0 = var_125; [L164] SORT_1 var_126 = ~var_126_arg_0; [L165] SORT_1 var_127_arg_0 = state_5; [L166] SORT_1 var_127_arg_1 = var_126; [L167] SORT_1 var_127 = var_127_arg_0 | var_127_arg_1; [L168] var_127 = var_127 & mask_SORT_1 [L169] SORT_1 constr_128_arg_0 = var_127; VAL [constr_128_arg_0=1, init_118_arg_1=0, input_2=2, input_3=1, input_4=1, mask_SORT_1=1, mask_SORT_101=4294967295, mask_SORT_104=4294967295, mask_SORT_11=65535, mask_SORT_12=7, mask_SORT_15=15, mask_SORT_153=3, mask_SORT_17=31, mask_SORT_19=63, mask_SORT_21=127, mask_SORT_23=255, mask_SORT_25=511, mask_SORT_27=1023, mask_SORT_29=2047, mask_SORT_31=4095, mask_SORT_33=8191, mask_SORT_35=16383, mask_SORT_37=32767, mask_SORT_62=4294967295, mask_SORT_65=4294967295, mask_SORT_68=4294967295, mask_SORT_71=4294967295, mask_SORT_74=4294967295, mask_SORT_77=4294967295, mask_SORT_80=4294967295, mask_SORT_83=4294967295, mask_SORT_86=4294967295, mask_SORT_89=4294967295, mask_SORT_9=4294967295, mask_SORT_92=4294967295, mask_SORT_95=4294967295, mask_SORT_98=4294967295, msb_SORT_1=1, msb_SORT_101=268435456, msb_SORT_104=536870912, msb_SORT_11=32768, msb_SORT_12=4, msb_SORT_15=8, msb_SORT_153=2, msb_SORT_17=16, msb_SORT_19=32, msb_SORT_21=64, msb_SORT_23=128, msb_SORT_25=256, msb_SORT_27=512, msb_SORT_29=1024, msb_SORT_31=2048, msb_SORT_33=4096, msb_SORT_35=8192, msb_SORT_37=16384, msb_SORT_62=2147483648, msb_SORT_65=65536, msb_SORT_68=131072, msb_SORT_71=262144, msb_SORT_74=524288, msb_SORT_77=1048576, msb_SORT_80=2097152, msb_SORT_83=4194304, msb_SORT_86=8388608, msb_SORT_89=16777216, msb_SORT_9=1073741824, msb_SORT_92=33554432, msb_SORT_95=67108864, msb_SORT_98=134217728, state_117=0, state_137=0, state_140=1, state_144=0, state_40=1, state_5=1, state_56=1, state_58=1, var_10=0, var_114=5, var_116=0, var_125=1, var_125_arg_0=1, var_126=2, var_126_arg_0=1, var_127=1, var_127_arg_0=1, var_127_arg_1=2, var_13=4, var_150=64, var_154=1, var_189=127, var_197=1, var_199=127, var_247=6, var_251=9, var_269=64, var_282=0, var_285=0, var_7=0, var_8=1] [L170] CALL assume_abort_if_not(constr_128_arg_0) VAL [\old(cond)=1] [L21] COND FALSE !(!cond) [L170] RET assume_abort_if_not(constr_128_arg_0) VAL [constr_128_arg_0=1, init_118_arg_1=0, input_2=2, input_3=1, input_4=1, mask_SORT_1=1, mask_SORT_101=4294967295, mask_SORT_104=4294967295, mask_SORT_11=65535, mask_SORT_12=7, mask_SORT_15=15, mask_SORT_153=3, mask_SORT_17=31, mask_SORT_19=63, mask_SORT_21=127, mask_SORT_23=255, mask_SORT_25=511, mask_SORT_27=1023, mask_SORT_29=2047, mask_SORT_31=4095, mask_SORT_33=8191, mask_SORT_35=16383, mask_SORT_37=32767, mask_SORT_62=4294967295, mask_SORT_65=4294967295, mask_SORT_68=4294967295, mask_SORT_71=4294967295, mask_SORT_74=4294967295, mask_SORT_77=4294967295, mask_SORT_80=4294967295, mask_SORT_83=4294967295, mask_SORT_86=4294967295, mask_SORT_89=4294967295, mask_SORT_9=4294967295, mask_SORT_92=4294967295, mask_SORT_95=4294967295, mask_SORT_98=4294967295, msb_SORT_1=1, msb_SORT_101=268435456, msb_SORT_104=536870912, msb_SORT_11=32768, msb_SORT_12=4, msb_SORT_15=8, msb_SORT_153=2, msb_SORT_17=16, msb_SORT_19=32, msb_SORT_21=64, msb_SORT_23=128, msb_SORT_25=256, msb_SORT_27=512, msb_SORT_29=1024, msb_SORT_31=2048, msb_SORT_33=4096, msb_SORT_35=8192, msb_SORT_37=16384, msb_SORT_62=2147483648, msb_SORT_65=65536, msb_SORT_68=131072, msb_SORT_71=262144, msb_SORT_74=524288, msb_SORT_77=1048576, msb_SORT_80=2097152, msb_SORT_83=4194304, msb_SORT_86=8388608, msb_SORT_89=16777216, msb_SORT_9=1073741824, msb_SORT_92=33554432, msb_SORT_95=67108864, msb_SORT_98=134217728, state_117=0, state_137=0, state_140=1, state_144=0, state_40=1, state_5=1, state_56=1, state_58=1, var_10=0, var_114=5, var_116=0, var_125=1, var_125_arg_0=1, var_126=2, var_126_arg_0=1, var_127=1, var_127_arg_0=1, var_127_arg_1=2, var_13=4, var_150=64, var_154=1, var_189=127, var_197=1, var_199=127, var_247=6, var_251=9, var_269=64, var_282=0, var_285=0, var_7=0, var_8=1] [L171] SORT_1 var_129_arg_0 = var_8; [L172] var_129_arg_0 = var_129_arg_0 & mask_SORT_1 [L173] SORT_11 var_129 = var_129_arg_0; [L174] SORT_11 var_130_arg_0 = state_117; [L175] SORT_11 var_130_arg_1 = var_129; [L176] SORT_1 var_130 = var_130_arg_0 <= var_130_arg_1; [L177] SORT_1 var_131_arg_0 = input_4; [L178] SORT_1 var_131_arg_1 = var_130; [L179] SORT_1 var_131 = var_131_arg_0 ^ var_131_arg_1; [L180] SORT_1 var_132_arg_0 = var_131; [L181] SORT_1 var_132 = ~var_132_arg_0; [L182] SORT_1 var_133_arg_0 = var_131; [L183] SORT_1 var_133 = ~var_133_arg_0; [L184] SORT_1 var_134_arg_0 = var_132; [L185] SORT_1 var_134_arg_1 = var_133; [L186] SORT_1 var_134 = var_134_arg_0 | var_134_arg_1; [L187] var_134 = var_134 & mask_SORT_1 [L188] SORT_1 constr_135_arg_0 = var_134; VAL [constr_128_arg_0=1, constr_135_arg_0=1, init_118_arg_1=0, input_2=2, input_3=1, input_4=1, mask_SORT_1=1, mask_SORT_101=4294967295, mask_SORT_104=4294967295, mask_SORT_11=65535, mask_SORT_12=7, mask_SORT_15=15, mask_SORT_153=3, mask_SORT_17=31, mask_SORT_19=63, mask_SORT_21=127, mask_SORT_23=255, mask_SORT_25=511, mask_SORT_27=1023, mask_SORT_29=2047, mask_SORT_31=4095, mask_SORT_33=8191, mask_SORT_35=16383, mask_SORT_37=32767, mask_SORT_62=4294967295, mask_SORT_65=4294967295, mask_SORT_68=4294967295, mask_SORT_71=4294967295, mask_SORT_74=4294967295, mask_SORT_77=4294967295, mask_SORT_80=4294967295, mask_SORT_83=4294967295, mask_SORT_86=4294967295, mask_SORT_89=4294967295, mask_SORT_9=4294967295, mask_SORT_92=4294967295, mask_SORT_95=4294967295, mask_SORT_98=4294967295, msb_SORT_1=1, msb_SORT_101=268435456, msb_SORT_104=536870912, msb_SORT_11=32768, msb_SORT_12=4, msb_SORT_15=8, msb_SORT_153=2, msb_SORT_17=16, msb_SORT_19=32, msb_SORT_21=64, msb_SORT_23=128, msb_SORT_25=256, msb_SORT_27=512, msb_SORT_29=1024, msb_SORT_31=2048, msb_SORT_33=4096, msb_SORT_35=8192, msb_SORT_37=16384, msb_SORT_62=2147483648, msb_SORT_65=65536, msb_SORT_68=131072, msb_SORT_71=262144, msb_SORT_74=524288, msb_SORT_77=1048576, msb_SORT_80=2097152, msb_SORT_83=4194304, msb_SORT_86=8388608, msb_SORT_89=16777216, msb_SORT_9=1073741824, msb_SORT_92=33554432, msb_SORT_95=67108864, msb_SORT_98=134217728, state_117=0, state_137=0, state_140=1, state_144=0, state_40=1, state_5=1, state_56=1, state_58=1, var_10=0, var_114=5, var_116=0, var_125=1, var_125_arg_0=1, var_126=2, var_126_arg_0=1, var_127=1, var_127_arg_0=1, var_127_arg_1=2, var_129=1, var_129_arg_0=1, var_13=4, var_130=1, var_130_arg_0=0, var_130_arg_1=1, var_131=0, var_131_arg_0=1, var_131_arg_1=1, var_132=0, var_132_arg_0=0, var_133=255, var_133_arg_0=0, var_134=1, var_134_arg_0=0, var_134_arg_1=255, var_150=64, var_154=1, var_189=127, var_197=1, var_199=127, var_247=6, var_251=9, var_269=64, var_282=0, var_285=0, var_7=0, var_8=1] [L189] CALL assume_abort_if_not(constr_135_arg_0) VAL [\old(cond)=1] [L21] COND FALSE !(!cond) [L189] RET assume_abort_if_not(constr_135_arg_0) VAL [constr_128_arg_0=1, constr_135_arg_0=1, init_118_arg_1=0, input_2=2, input_3=1, input_4=1, mask_SORT_1=1, mask_SORT_101=4294967295, mask_SORT_104=4294967295, mask_SORT_11=65535, mask_SORT_12=7, mask_SORT_15=15, mask_SORT_153=3, mask_SORT_17=31, mask_SORT_19=63, mask_SORT_21=127, mask_SORT_23=255, mask_SORT_25=511, mask_SORT_27=1023, mask_SORT_29=2047, mask_SORT_31=4095, mask_SORT_33=8191, mask_SORT_35=16383, mask_SORT_37=32767, mask_SORT_62=4294967295, mask_SORT_65=4294967295, mask_SORT_68=4294967295, mask_SORT_71=4294967295, mask_SORT_74=4294967295, mask_SORT_77=4294967295, mask_SORT_80=4294967295, mask_SORT_83=4294967295, mask_SORT_86=4294967295, mask_SORT_89=4294967295, mask_SORT_9=4294967295, mask_SORT_92=4294967295, mask_SORT_95=4294967295, mask_SORT_98=4294967295, msb_SORT_1=1, msb_SORT_101=268435456, msb_SORT_104=536870912, msb_SORT_11=32768, msb_SORT_12=4, msb_SORT_15=8, msb_SORT_153=2, msb_SORT_17=16, msb_SORT_19=32, msb_SORT_21=64, msb_SORT_23=128, msb_SORT_25=256, msb_SORT_27=512, msb_SORT_29=1024, msb_SORT_31=2048, msb_SORT_33=4096, msb_SORT_35=8192, msb_SORT_37=16384, msb_SORT_62=2147483648, msb_SORT_65=65536, msb_SORT_68=131072, msb_SORT_71=262144, msb_SORT_74=524288, msb_SORT_77=1048576, msb_SORT_80=2097152, msb_SORT_83=4194304, msb_SORT_86=8388608, msb_SORT_89=16777216, msb_SORT_9=1073741824, msb_SORT_92=33554432, msb_SORT_95=67108864, msb_SORT_98=134217728, state_117=0, state_137=0, state_140=1, state_144=0, state_40=1, state_5=1, state_56=1, state_58=1, var_10=0, var_114=5, var_116=0, var_125=1, var_125_arg_0=1, var_126=2, var_126_arg_0=1, var_127=1, var_127_arg_0=1, var_127_arg_1=2, var_129=1, var_129_arg_0=1, var_13=4, var_130=1, var_130_arg_0=0, var_130_arg_1=1, var_131=0, var_131_arg_0=1, var_131_arg_1=1, var_132=0, var_132_arg_0=0, var_133=255, var_133_arg_0=0, var_134=1, var_134_arg_0=0, var_134_arg_1=255, var_150=64, var_154=1, var_189=127, var_197=1, var_199=127, var_247=6, var_251=9, var_269=64, var_282=0, var_285=0, var_7=0, var_8=1] [L191] SORT_12 var_115_arg_0 = var_114; [L192] var_115_arg_0 = var_115_arg_0 & mask_SORT_12 [L193] SORT_11 var_115 = var_115_arg_0; [L194] SORT_11 var_119_arg_0 = var_115; [L195] SORT_11 var_119_arg_1 = state_117; [L196] SORT_1 var_119 = var_119_arg_0 < var_119_arg_1; [L197] SORT_1 var_14_arg_0 = input_3; [L198] SORT_1 var_14 = ~var_14_arg_0; [L199] SORT_1 var_16_arg_0 = var_14; [L200] SORT_12 var_16_arg_1 = var_13; [L201] SORT_15 var_16 = ((SORT_15)var_16_arg_0 << 3) | var_16_arg_1; [L202] var_16 = var_16 & mask_SORT_15 [L203] SORT_1 var_18_arg_0 = input_3; [L204] SORT_15 var_18_arg_1 = var_16; [L205] SORT_17 var_18 = ((SORT_17)var_18_arg_0 << 4) | var_18_arg_1; [L206] var_18 = var_18 & mask_SORT_17 [L207] SORT_1 var_20_arg_0 = input_3; [L208] SORT_17 var_20_arg_1 = var_18; [L209] SORT_19 var_20 = ((SORT_19)var_20_arg_0 << 5) | var_20_arg_1; [L210] var_20 = var_20 & mask_SORT_19 [L211] SORT_1 var_22_arg_0 = input_3; [L212] SORT_19 var_22_arg_1 = var_20; [L213] SORT_21 var_22 = ((SORT_21)var_22_arg_0 << 6) | var_22_arg_1; [L214] var_22 = var_22 & mask_SORT_21 [L215] SORT_1 var_24_arg_0 = input_3; [L216] SORT_21 var_24_arg_1 = var_22; [L217] SORT_23 var_24 = ((SORT_23)var_24_arg_0 << 7) | var_24_arg_1; [L218] var_24 = var_24 & mask_SORT_23 [L219] SORT_1 var_26_arg_0 = input_3; [L220] SORT_23 var_26_arg_1 = var_24; [L221] SORT_25 var_26 = ((SORT_25)var_26_arg_0 << 8) | var_26_arg_1; [L222] var_26 = var_26 & mask_SORT_25 [L223] SORT_1 var_28_arg_0 = var_14; [L224] SORT_25 var_28_arg_1 = var_26; [L225] SORT_27 var_28 = ((SORT_27)var_28_arg_0 << 9) | var_28_arg_1; [L226] var_28 = var_28 & mask_SORT_27 [L227] SORT_1 var_30_arg_0 = var_14; [L228] SORT_27 var_30_arg_1 = var_28; [L229] SORT_29 var_30 = ((SORT_29)var_30_arg_0 << 10) | var_30_arg_1; [L230] var_30 = var_30 & mask_SORT_29 [L231] SORT_1 var_32_arg_0 = var_14; [L232] SORT_29 var_32_arg_1 = var_30; [L233] SORT_31 var_32 = ((SORT_31)var_32_arg_0 << 11) | var_32_arg_1; [L234] var_32 = var_32 & mask_SORT_31 [L235] SORT_1 var_34_arg_0 = var_14; [L236] SORT_31 var_34_arg_1 = var_32; [L237] SORT_33 var_34 = ((SORT_33)var_34_arg_0 << 12) | var_34_arg_1; [L238] var_34 = var_34 & mask_SORT_33 [L239] SORT_1 var_36_arg_0 = var_14; [L240] SORT_33 var_36_arg_1 = var_34; [L241] SORT_35 var_36 = ((SORT_35)var_36_arg_0 << 13) | var_36_arg_1; [L242] var_36 = var_36 & mask_SORT_35 [L243] SORT_1 var_38_arg_0 = var_14; [L244] SORT_35 var_38_arg_1 = var_36; [L245] SORT_37 var_38 = ((SORT_37)var_38_arg_0 << 14) | var_38_arg_1; [L246] var_38 = var_38 & mask_SORT_37 [L247] SORT_1 var_39_arg_0 = var_14; [L248] SORT_37 var_39_arg_1 = var_38; [L249] SORT_11 var_39 = ((SORT_11)var_39_arg_0 << 15) | var_39_arg_1; [L250] SORT_1 var_41_arg_0 = state_40; [L251] SORT_1 var_41 = ~var_41_arg_0; [L252] SORT_1 var_42_arg_0 = state_40; [L253] SORT_12 var_42_arg_1 = var_13; [L254] SORT_15 var_42 = ((SORT_15)var_42_arg_0 << 3) | var_42_arg_1; [L255] var_42 = var_42 & mask_SORT_15 [L256] SORT_1 var_43_arg_0 = var_41; [L257] SORT_15 var_43_arg_1 = var_42; [L258] SORT_17 var_43 = ((SORT_17)var_43_arg_0 << 4) | var_43_arg_1; [L259] var_43 = var_43 & mask_SORT_17 [L260] SORT_1 var_44_arg_0 = state_40; [L261] SORT_17 var_44_arg_1 = var_43; [L262] SORT_19 var_44 = ((SORT_19)var_44_arg_0 << 5) | var_44_arg_1; [L263] var_44 = var_44 & mask_SORT_19 [L264] SORT_1 var_45_arg_0 = var_41; [L265] SORT_19 var_45_arg_1 = var_44; [L266] SORT_21 var_45 = ((SORT_21)var_45_arg_0 << 6) | var_45_arg_1; [L267] var_45 = var_45 & mask_SORT_21 [L268] SORT_1 var_46_arg_0 = var_41; [L269] SORT_21 var_46_arg_1 = var_45; [L270] SORT_23 var_46 = ((SORT_23)var_46_arg_0 << 7) | var_46_arg_1; [L271] var_46 = var_46 & mask_SORT_23 [L272] SORT_1 var_47_arg_0 = state_40; [L273] SORT_23 var_47_arg_1 = var_46; [L274] SORT_25 var_47 = ((SORT_25)var_47_arg_0 << 8) | var_47_arg_1; [L275] var_47 = var_47 & mask_SORT_25 [L276] SORT_1 var_48_arg_0 = var_41; [L277] SORT_25 var_48_arg_1 = var_47; [L278] SORT_27 var_48 = ((SORT_27)var_48_arg_0 << 9) | var_48_arg_1; [L279] var_48 = var_48 & mask_SORT_27 [L280] SORT_1 var_49_arg_0 = var_41; [L281] SORT_27 var_49_arg_1 = var_48; [L282] SORT_29 var_49 = ((SORT_29)var_49_arg_0 << 10) | var_49_arg_1; [L283] var_49 = var_49 & mask_SORT_29 [L284] SORT_1 var_50_arg_0 = var_41; [L285] SORT_29 var_50_arg_1 = var_49; [L286] SORT_31 var_50 = ((SORT_31)var_50_arg_0 << 11) | var_50_arg_1; [L287] var_50 = var_50 & mask_SORT_31 [L288] SORT_1 var_51_arg_0 = var_41; [L289] SORT_31 var_51_arg_1 = var_50; [L290] SORT_33 var_51 = ((SORT_33)var_51_arg_0 << 12) | var_51_arg_1; [L291] var_51 = var_51 & mask_SORT_33 [L292] SORT_1 var_52_arg_0 = var_41; [L293] SORT_33 var_52_arg_1 = var_51; [L294] SORT_35 var_52 = ((SORT_35)var_52_arg_0 << 13) | var_52_arg_1; [L295] var_52 = var_52 & mask_SORT_35 [L296] SORT_1 var_53_arg_0 = var_41; [L297] SORT_35 var_53_arg_1 = var_52; [L298] SORT_37 var_53 = ((SORT_37)var_53_arg_0 << 14) | var_53_arg_1; [L299] var_53 = var_53 & mask_SORT_37 [L300] SORT_1 var_54_arg_0 = var_41; [L301] SORT_37 var_54_arg_1 = var_53; [L302] SORT_11 var_54 = ((SORT_11)var_54_arg_0 << 15) | var_54_arg_1; [L303] SORT_11 var_55_arg_0 = var_39; [L304] SORT_11 var_55_arg_1 = var_54; [L305] SORT_11 var_55 = var_55_arg_0 + var_55_arg_1; [L306] SORT_11 var_57_arg_0 = state_56; [L307] SORT_11 var_57 = -var_57_arg_0; [L308] SORT_1 var_59_arg_0 = state_58; [L309] SORT_11 var_59_arg_1 = var_57; [L310] SORT_11 var_59_arg_2 = state_56; [L311] EXPR var_59_arg_0 ? var_59_arg_1 : var_59_arg_2 [L311] SORT_11 var_59 = var_59_arg_0 ? var_59_arg_1 : var_59_arg_2; [L312] SORT_11 var_60_arg_0 = var_55; [L313] SORT_11 var_60_arg_1 = var_59; [L314] SORT_11 var_60 = var_60_arg_0 + var_60_arg_1; [L315] var_60 = var_60 & mask_SORT_11 [L316] SORT_11 var_61_arg_0 = var_60; [L317] SORT_1 var_61 = var_61_arg_0 >> 15; [L318] SORT_1 var_63_arg_0 = var_61; [L319] SORT_9 var_63_arg_1 = var_10; [L320] SORT_62 var_63 = ((SORT_62)var_63_arg_0 << 31) | var_63_arg_1; [L321] var_63 = var_63 & mask_SORT_62 [L322] SORT_11 var_106_arg_0 = var_60; [L323] SORT_1 var_106 = var_106_arg_0 >> 15; [L324] SORT_11 var_103_arg_0 = var_60; [L325] SORT_1 var_103 = var_103_arg_0 >> 15; [L326] SORT_11 var_100_arg_0 = var_60; [L327] SORT_1 var_100 = var_100_arg_0 >> 15; [L328] SORT_11 var_97_arg_0 = var_60; [L329] SORT_1 var_97 = var_97_arg_0 >> 15; [L330] SORT_11 var_94_arg_0 = var_60; [L331] SORT_1 var_94 = var_94_arg_0 >> 15; [L332] SORT_11 var_91_arg_0 = var_60; [L333] SORT_1 var_91 = var_91_arg_0 >> 15; [L334] SORT_11 var_88_arg_0 = var_60; [L335] SORT_1 var_88 = var_88_arg_0 >> 15; [L336] SORT_11 var_85_arg_0 = var_60; [L337] SORT_1 var_85 = var_85_arg_0 >> 15; [L338] SORT_11 var_82_arg_0 = var_60; [L339] SORT_1 var_82 = var_82_arg_0 >> 15; [L340] SORT_11 var_79_arg_0 = var_60; [L341] SORT_1 var_79 = var_79_arg_0 >> 15; [L342] SORT_11 var_76_arg_0 = var_60; [L343] SORT_1 var_76 = var_76_arg_0 >> 15; [L344] SORT_11 var_73_arg_0 = var_60; [L345] SORT_1 var_73 = var_73_arg_0 >> 15; [L346] SORT_11 var_70_arg_0 = var_60; [L347] SORT_1 var_70 = var_70_arg_0 >> 15; [L348] SORT_11 var_67_arg_0 = var_60; [L349] SORT_1 var_67 = var_67_arg_0 >> 15; [L350] SORT_11 var_64_arg_0 = var_60; [L351] SORT_1 var_64 = var_64_arg_0 >> 15; [L352] SORT_1 var_66_arg_0 = var_64; [L353] SORT_11 var_66_arg_1 = var_60; [L354] SORT_65 var_66 = ((SORT_65)var_66_arg_0 << 16) | var_66_arg_1; [L355] var_66 = var_66 & mask_SORT_65 [L356] SORT_1 var_69_arg_0 = var_67; [L357] SORT_65 var_69_arg_1 = var_66; [L358] SORT_68 var_69 = ((SORT_68)var_69_arg_0 << 17) | var_69_arg_1; [L359] var_69 = var_69 & mask_SORT_68 [L360] SORT_1 var_72_arg_0 = var_70; [L361] SORT_68 var_72_arg_1 = var_69; [L362] SORT_71 var_72 = ((SORT_71)var_72_arg_0 << 18) | var_72_arg_1; [L363] var_72 = var_72 & mask_SORT_71 [L364] SORT_1 var_75_arg_0 = var_73; [L365] SORT_71 var_75_arg_1 = var_72; [L366] SORT_74 var_75 = ((SORT_74)var_75_arg_0 << 19) | var_75_arg_1; [L367] var_75 = var_75 & mask_SORT_74 [L368] SORT_1 var_78_arg_0 = var_76; [L369] SORT_74 var_78_arg_1 = var_75; [L370] SORT_77 var_78 = ((SORT_77)var_78_arg_0 << 20) | var_78_arg_1; [L371] var_78 = var_78 & mask_SORT_77 [L372] SORT_1 var_81_arg_0 = var_79; [L373] SORT_77 var_81_arg_1 = var_78; [L374] SORT_80 var_81 = ((SORT_80)var_81_arg_0 << 21) | var_81_arg_1; [L375] var_81 = var_81 & mask_SORT_80 [L376] SORT_1 var_84_arg_0 = var_82; [L377] SORT_80 var_84_arg_1 = var_81; [L378] SORT_83 var_84 = ((SORT_83)var_84_arg_0 << 22) | var_84_arg_1; [L379] var_84 = var_84 & mask_SORT_83 [L380] SORT_1 var_87_arg_0 = var_85; [L381] SORT_83 var_87_arg_1 = var_84; [L382] SORT_86 var_87 = ((SORT_86)var_87_arg_0 << 23) | var_87_arg_1; [L383] var_87 = var_87 & mask_SORT_86 [L384] SORT_1 var_90_arg_0 = var_88; [L385] SORT_86 var_90_arg_1 = var_87; [L386] SORT_89 var_90 = ((SORT_89)var_90_arg_0 << 24) | var_90_arg_1; [L387] var_90 = var_90 & mask_SORT_89 [L388] SORT_1 var_93_arg_0 = var_91; [L389] SORT_89 var_93_arg_1 = var_90; [L390] SORT_92 var_93 = ((SORT_92)var_93_arg_0 << 25) | var_93_arg_1; [L391] var_93 = var_93 & mask_SORT_92 [L392] SORT_1 var_96_arg_0 = var_94; [L393] SORT_92 var_96_arg_1 = var_93; [L394] SORT_95 var_96 = ((SORT_95)var_96_arg_0 << 26) | var_96_arg_1; [L395] var_96 = var_96 & mask_SORT_95 [L396] SORT_1 var_99_arg_0 = var_97; [L397] SORT_95 var_99_arg_1 = var_96; [L398] SORT_98 var_99 = ((SORT_98)var_99_arg_0 << 27) | var_99_arg_1; [L399] var_99 = var_99 & mask_SORT_98 [L400] SORT_1 var_102_arg_0 = var_100; [L401] SORT_98 var_102_arg_1 = var_99; [L402] SORT_101 var_102 = ((SORT_101)var_102_arg_0 << 28) | var_102_arg_1; [L403] var_102 = var_102 & mask_SORT_101 [L404] SORT_1 var_105_arg_0 = var_103; [L405] SORT_101 var_105_arg_1 = var_102; [L406] SORT_104 var_105 = ((SORT_104)var_105_arg_0 << 29) | var_105_arg_1; [L407] var_105 = var_105 & mask_SORT_104 [L408] SORT_1 var_107_arg_0 = var_106; [L409] SORT_104 var_107_arg_1 = var_105; [L410] SORT_9 var_107 = ((SORT_9)var_107_arg_0 << 30) | var_107_arg_1; [L411] SORT_9 var_108_arg_0 = var_107; [L412] var_108_arg_0 = var_108_arg_0 & mask_SORT_9 [L413] SORT_62 var_108 = var_108_arg_0; [L414] SORT_62 var_109_arg_0 = var_63; [L415] SORT_62 var_109_arg_1 = var_108; [L416] SORT_1 var_109 = var_109_arg_0 <= var_109_arg_1; [L417] SORT_1 var_110_arg_0 = var_109; [L418] SORT_1 var_110_arg_1 = var_8; [L419] SORT_1 var_110_arg_2 = var_7; [L420] EXPR var_110_arg_0 ? var_110_arg_1 : var_110_arg_2 [L420] SORT_1 var_110 = var_110_arg_0 ? var_110_arg_1 : var_110_arg_2; [L421] var_110 = var_110 & mask_SORT_1 [L422] SORT_1 var_111_arg_0 = input_3; [L423] SORT_1 var_111_arg_1 = var_110; [L424] SORT_1 var_111 = var_111_arg_0 ^ var_111_arg_1; [L425] SORT_1 var_112_arg_0 = var_111; [L426] SORT_1 var_112 = ~var_112_arg_0; [L427] SORT_1 var_120_arg_0 = var_119; [L428] SORT_1 var_120_arg_1 = var_112; [L429] SORT_1 var_120_arg_2 = var_8; [L430] EXPR var_120_arg_0 ? var_120_arg_1 : var_120_arg_2 [L430] SORT_1 var_120 = var_120_arg_0 ? var_120_arg_1 : var_120_arg_2; [L431] SORT_1 var_121_arg_0 = var_120; [L432] SORT_1 var_121 = ~var_121_arg_0; [L433] SORT_1 var_122_arg_0 = var_120; [L434] SORT_1 var_122 = ~var_122_arg_0; [L435] SORT_1 var_123_arg_0 = var_121; [L436] SORT_1 var_123_arg_1 = var_122; [L437] SORT_1 var_123 = var_123_arg_0 & var_123_arg_1; [L438] var_123 = var_123 & mask_SORT_1 [L439] SORT_1 bad_124_arg_0 = var_123; [L440] CALL __VERIFIER_assert(!(bad_124_arg_0)) [L20] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L20] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 13 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 15.1s, OverallIterations: 1, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 10.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-03 01:51:05,037 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/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-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/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_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.safe_intersymbol_analog_estimation_convergence.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/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_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/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 df7f37b318c8d1f9d7b6d8bdd6b9d05156ce656d1a634258cfc85f6ce0601b19 --- 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 01:51:07,539 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 01:51:07,542 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 01:51:07,588 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 01:51:07,588 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 01:51:07,592 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 01:51:07,595 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 01:51:07,599 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 01:51:07,605 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 01:51:07,612 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 01:51:07,614 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 01:51:07,616 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 01:51:07,617 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 01:51:07,619 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 01:51:07,621 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 01:51:07,623 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 01:51:07,624 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 01:51:07,625 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 01:51:07,627 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 01:51:07,636 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 01:51:07,638 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 01:51:07,639 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 01:51:07,642 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 01:51:07,644 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 01:51:07,652 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 01:51:07,653 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 01:51:07,653 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 01:51:07,655 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 01:51:07,656 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 01:51:07,657 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 01:51:07,657 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 01:51:07,658 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 01:51:07,660 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 01:51:07,661 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 01:51:07,663 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 01:51:07,663 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 01:51:07,664 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 01:51:07,664 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 01:51:07,665 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 01:51:07,667 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 01:51:07,668 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 01:51:07,668 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2022-11-03 01:51:07,707 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 01:51:07,707 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 01:51:07,708 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 01:51:07,708 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 01:51:07,709 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 01:51:07,710 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 01:51:07,710 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 01:51:07,710 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 01:51:07,710 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 01:51:07,711 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 01:51:07,712 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 01:51:07,712 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 01:51:07,714 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 01:51:07,714 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 01:51:07,714 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 01:51:07,715 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 01:51:07,715 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 01:51:07,715 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-03 01:51:07,715 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-03 01:51:07,716 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-03 01:51:07,716 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 01:51:07,716 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 01:51:07,717 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 01:51:07,717 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 01:51:07,717 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-03 01:51:07,717 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 01:51:07,718 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 01:51:07,718 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 01:51:07,718 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 01:51:07,719 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 01:51:07,719 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-03 01:51:07,719 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-03 01:51:07,720 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 01:51:07,720 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 01:51:07,720 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-03 01:51:07,721 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_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> df7f37b318c8d1f9d7b6d8bdd6b9d05156ce656d1a634258cfc85f6ce0601b19 [2022-11-03 01:51:08,114 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 01:51:08,144 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 01:51:08,147 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 01:51:08,148 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 01:51:08,149 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 01:51:08,151 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.safe_intersymbol_analog_estimation_convergence.c [2022-11-03 01:51:08,223 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/data/bd4a7cbfa/aa76f990e745462596ebd653ac543d71/FLAG58cde37db [2022-11-03 01:51:08,780 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 01:51:08,781 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.safe_intersymbol_analog_estimation_convergence.c [2022-11-03 01:51:08,796 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/data/bd4a7cbfa/aa76f990e745462596ebd653ac543d71/FLAG58cde37db [2022-11-03 01:51:09,076 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/data/bd4a7cbfa/aa76f990e745462596ebd653ac543d71 [2022-11-03 01:51:09,078 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 01:51:09,080 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 01:51:09,081 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 01:51:09,081 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 01:51:09,085 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 01:51:09,086 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:51:09" (1/1) ... [2022-11-03 01:51:09,087 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@605b6c05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:51:09, skipping insertion in model container [2022-11-03 01:51:09,088 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:51:09" (1/1) ... [2022-11-03 01:51:09,095 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 01:51:09,145 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 01:51:09,337 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_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.safe_intersymbol_analog_estimation_convergence.c[1132,1145] [2022-11-03 01:51:09,629 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 01:51:09,633 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 01:51:09,653 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_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.safe_intersymbol_analog_estimation_convergence.c[1132,1145] [2022-11-03 01:51:09,752 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 01:51:09,764 INFO L208 MainTranslator]: Completed translation [2022-11-03 01:51:09,764 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:51:09 WrapperNode [2022-11-03 01:51:09,765 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 01:51:09,766 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 01:51:09,766 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 01:51:09,766 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 01:51:09,779 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:51:09" (1/1) ... [2022-11-03 01:51:09,804 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:51:09" (1/1) ... [2022-11-03 01:51:09,883 INFO L138 Inliner]: procedures = 11, calls = 5, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 735 [2022-11-03 01:51:09,891 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 01:51:09,892 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 01:51:09,892 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 01:51:09,893 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 01:51:09,906 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:51:09" (1/1) ... [2022-11-03 01:51:09,907 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:51:09" (1/1) ... [2022-11-03 01:51:09,915 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:51:09" (1/1) ... [2022-11-03 01:51:09,930 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:51:09" (1/1) ... [2022-11-03 01:51:09,966 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:51:09" (1/1) ... [2022-11-03 01:51:09,986 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:51:09" (1/1) ... [2022-11-03 01:51:09,996 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:51:09" (1/1) ... [2022-11-03 01:51:10,009 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:51:09" (1/1) ... [2022-11-03 01:51:10,015 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 01:51:10,015 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 01:51:10,016 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 01:51:10,016 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 01:51:10,016 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:51:09" (1/1) ... [2022-11-03 01:51:10,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 01:51:10,033 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:51:10,047 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 01:51:10,053 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 01:51:10,093 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 01:51:10,093 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 01:51:10,094 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-03 01:51:10,094 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-03 01:51:10,336 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 01:51:10,338 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 01:51:11,206 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 01:51:11,219 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 01:51:11,219 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-03 01:51:11,221 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:51:11 BoogieIcfgContainer [2022-11-03 01:51:11,222 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 01:51:11,225 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 01:51:11,225 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 01:51:11,229 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 01:51:11,229 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 01:51:09" (1/3) ... [2022-11-03 01:51:11,230 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2af8adf3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:51:11, skipping insertion in model container [2022-11-03 01:51:11,230 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:51:09" (2/3) ... [2022-11-03 01:51:11,231 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2af8adf3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:51:11, skipping insertion in model container [2022-11-03 01:51:11,231 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:51:11" (3/3) ... [2022-11-03 01:51:11,232 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.safe_intersymbol_analog_estimation_convergence.c [2022-11-03 01:51:11,252 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 01:51:11,253 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 01:51:11,320 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 01:51:11,328 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;@2b58a162, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 01:51:11,328 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 01:51:11,333 INFO L276 IsEmpty]: Start isEmpty. Operand has 67 states, 62 states have (on average 1.467741935483871) internal successors, (91), 63 states have internal predecessors, (91), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 01:51:11,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-03 01:51:11,341 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:51:11,342 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:51:11,343 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:51:11,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:51:11,350 INFO L85 PathProgramCache]: Analyzing trace with hash -450479395, now seen corresponding path program 1 times [2022-11-03 01:51:11,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:51:11,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1397461846] [2022-11-03 01:51:11,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:51:11,369 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:51:11,369 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:51:11,373 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:51:11,381 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-03 01:51:11,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:51:11,743 INFO L263 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-03 01:51:11,750 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:51:11,792 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-03 01:51:11,792 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:51:11,793 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:51:11,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1397461846] [2022-11-03 01:51:11,794 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1397461846] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:51:11,794 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:51:11,794 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 01:51:11,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302651745] [2022-11-03 01:51:11,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:51:11,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-03 01:51:11,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:51:11,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-03 01:51:11,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-03 01:51:11,847 INFO L87 Difference]: Start difference. First operand has 67 states, 62 states have (on average 1.467741935483871) internal successors, (91), 63 states have internal predecessors, (91), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 01:51:11,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:51:11,884 INFO L93 Difference]: Finished difference Result 128 states and 187 transitions. [2022-11-03 01:51:11,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-03 01:51:11,887 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 23 [2022-11-03 01:51:11,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:51:11,895 INFO L225 Difference]: With dead ends: 128 [2022-11-03 01:51:11,895 INFO L226 Difference]: Without dead ends: 63 [2022-11-03 01:51:11,898 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-03 01:51:11,902 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 01:51:11,903 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 01:51:11,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2022-11-03 01:51:11,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2022-11-03 01:51:11,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 59 states have (on average 1.423728813559322) internal successors, (84), 59 states have internal predecessors, (84), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 01:51:11,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 88 transitions. [2022-11-03 01:51:11,957 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 88 transitions. Word has length 23 [2022-11-03 01:51:11,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:51:11,957 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 88 transitions. [2022-11-03 01:51:11,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 01:51:11,958 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 88 transitions. [2022-11-03 01:51:11,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-03 01:51:11,960 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:51:11,961 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:51:11,982 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-03 01:51:12,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:51:12,182 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:51:12,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:51:12,183 INFO L85 PathProgramCache]: Analyzing trace with hash 2108508633, now seen corresponding path program 1 times [2022-11-03 01:51:12,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:51:12,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1516994958] [2022-11-03 01:51:12,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:51:12,185 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:51:12,185 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:51:12,186 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:51:12,187 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-03 01:51:12,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:51:12,461 INFO L263 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-03 01:51:12,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:51:12,645 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-03 01:51:12,645 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:51:12,646 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:51:12,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1516994958] [2022-11-03 01:51:12,646 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1516994958] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:51:12,646 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:51:12,647 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 01:51:12,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586689886] [2022-11-03 01:51:12,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:51:12,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 01:51:12,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:51:12,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 01:51:12,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 01:51:12,650 INFO L87 Difference]: Start difference. First operand 63 states and 88 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-03 01:51:12,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:51:12,912 INFO L93 Difference]: Finished difference Result 131 states and 186 transitions. [2022-11-03 01:51:12,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 01:51:12,913 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 23 [2022-11-03 01:51:12,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:51:12,915 INFO L225 Difference]: With dead ends: 131 [2022-11-03 01:51:12,915 INFO L226 Difference]: Without dead ends: 129 [2022-11-03 01:51:12,916 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-03 01:51:12,917 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 364 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 364 SdHoareTripleChecker+Valid, 275 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 01:51:12,917 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [364 Valid, 275 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 01:51:12,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2022-11-03 01:51:12,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 65. [2022-11-03 01:51:12,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 61 states have (on average 1.4098360655737705) internal successors, (86), 61 states have internal predecessors, (86), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 01:51:12,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 90 transitions. [2022-11-03 01:51:12,929 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 90 transitions. Word has length 23 [2022-11-03 01:51:12,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:51:12,930 INFO L495 AbstractCegarLoop]: Abstraction has 65 states and 90 transitions. [2022-11-03 01:51:12,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-03 01:51:12,930 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 90 transitions. [2022-11-03 01:51:12,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-03 01:51:12,931 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:51:12,931 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:51:12,947 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-03 01:51:13,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:51:13,145 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:51:13,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:51:13,146 INFO L85 PathProgramCache]: Analyzing trace with hash 2108449051, now seen corresponding path program 1 times [2022-11-03 01:51:13,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:51:13,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [904115769] [2022-11-03 01:51:13,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:51:13,147 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:51:13,147 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:51:13,148 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:51:13,185 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-03 01:51:13,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:51:13,446 INFO L263 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-03 01:51:13,450 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:51:13,544 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-03 01:51:13,544 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:51:13,544 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:51:13,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [904115769] [2022-11-03 01:51:13,546 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [904115769] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:51:13,549 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:51:13,549 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 01:51:13,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74434858] [2022-11-03 01:51:13,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:51:13,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 01:51:13,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:51:13,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 01:51:13,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:51:13,553 INFO L87 Difference]: Start difference. First operand 65 states and 90 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-03 01:51:13,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:51:13,706 INFO L93 Difference]: Finished difference Result 240 states and 343 transitions. [2022-11-03 01:51:13,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 01:51:13,707 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 23 [2022-11-03 01:51:13,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:51:13,708 INFO L225 Difference]: With dead ends: 240 [2022-11-03 01:51:13,708 INFO L226 Difference]: Without dead ends: 177 [2022-11-03 01:51:13,709 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 01:51:13,710 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 289 mSDsluCounter, 267 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 291 SdHoareTripleChecker+Valid, 367 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:51:13,710 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [291 Valid, 367 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:51:13,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2022-11-03 01:51:13,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 75. [2022-11-03 01:51:13,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 69 states have (on average 1.391304347826087) internal successors, (96), 69 states have internal predecessors, (96), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-03 01:51:13,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 104 transitions. [2022-11-03 01:51:13,723 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 104 transitions. Word has length 23 [2022-11-03 01:51:13,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:51:13,723 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 104 transitions. [2022-11-03 01:51:13,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-03 01:51:13,724 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 104 transitions. [2022-11-03 01:51:13,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-11-03 01:51:13,726 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:51:13,726 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:51:13,740 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2022-11-03 01:51:13,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:51:13,940 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:51:13,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:51:13,940 INFO L85 PathProgramCache]: Analyzing trace with hash -2135365673, now seen corresponding path program 1 times [2022-11-03 01:51:13,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:51:13,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1541239964] [2022-11-03 01:51:13,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:51:13,942 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:51:13,942 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:51:13,943 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:51:13,962 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-03 01:51:14,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:51:14,454 INFO L263 TraceCheckSpWp]: Trace formula consists of 862 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 01:51:14,461 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:51:14,653 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-03 01:51:14,653 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:51:14,653 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:51:14,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1541239964] [2022-11-03 01:51:14,656 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1541239964] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:51:14,656 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:51:14,657 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 01:51:14,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866611780] [2022-11-03 01:51:14,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:51:14,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 01:51:14,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:51:14,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 01:51:14,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-03 01:51:14,659 INFO L87 Difference]: Start difference. First operand 75 states and 104 transitions. Second operand has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-03 01:51:14,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:51:14,694 INFO L93 Difference]: Finished difference Result 146 states and 203 transitions. [2022-11-03 01:51:14,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 01:51:14,694 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 86 [2022-11-03 01:51:14,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:51:14,696 INFO L225 Difference]: With dead ends: 146 [2022-11-03 01:51:14,696 INFO L226 Difference]: Without dead ends: 83 [2022-11-03 01:51:14,700 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-03 01:51:14,707 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 4 mSDsluCounter, 383 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 466 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 37 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 01:51:14,708 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 466 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 37 Unchecked, 0.0s Time] [2022-11-03 01:51:14,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2022-11-03 01:51:14,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2022-11-03 01:51:14,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 77 states have (on average 1.3766233766233766) internal successors, (106), 77 states have internal predecessors, (106), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-03 01:51:14,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 114 transitions. [2022-11-03 01:51:14,720 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 114 transitions. Word has length 86 [2022-11-03 01:51:14,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:51:14,720 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 114 transitions. [2022-11-03 01:51:14,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-03 01:51:14,721 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 114 transitions. [2022-11-03 01:51:14,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-11-03 01:51:14,723 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:51:14,723 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:51:14,754 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-03 01:51:14,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:51:14,950 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:51:14,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:51:14,950 INFO L85 PathProgramCache]: Analyzing trace with hash 1598901845, now seen corresponding path program 1 times [2022-11-03 01:51:14,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:51:14,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [892772379] [2022-11-03 01:51:14,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:51:14,952 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:51:14,952 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:51:14,953 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:51:14,986 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-03 01:51:15,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:51:15,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 862 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 01:51:15,504 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:51:15,635 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-03 01:51:15,635 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:51:15,646 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:51:15,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [892772379] [2022-11-03 01:51:15,647 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [892772379] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:51:15,647 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:51:15,647 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 01:51:15,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677235568] [2022-11-03 01:51:15,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:51:15,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 01:51:15,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:51:15,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 01:51:15,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 01:51:15,649 INFO L87 Difference]: Start difference. First operand 83 states and 114 transitions. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-03 01:51:15,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:51:15,692 INFO L93 Difference]: Finished difference Result 146 states and 202 transitions. [2022-11-03 01:51:15,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 01:51:15,693 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 86 [2022-11-03 01:51:15,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:51:15,694 INFO L225 Difference]: With dead ends: 146 [2022-11-03 01:51:15,694 INFO L226 Difference]: Without dead ends: 83 [2022-11-03 01:51:15,694 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 83 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 01:51:15,695 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 63 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 01:51:15,696 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 166 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 01:51:15,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2022-11-03 01:51:15,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2022-11-03 01:51:15,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 77 states have (on average 1.3636363636363635) internal successors, (105), 77 states have internal predecessors, (105), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-03 01:51:15,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 113 transitions. [2022-11-03 01:51:15,705 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 113 transitions. Word has length 86 [2022-11-03 01:51:15,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:51:15,706 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 113 transitions. [2022-11-03 01:51:15,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-03 01:51:15,707 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 113 transitions. [2022-11-03 01:51:15,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-11-03 01:51:15,708 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:51:15,708 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:51:15,741 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-03 01:51:15,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:51:15,930 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:51:15,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:51:15,930 INFO L85 PathProgramCache]: Analyzing trace with hash -1435148201, now seen corresponding path program 1 times [2022-11-03 01:51:15,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:51:15,931 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [523659439] [2022-11-03 01:51:15,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:51:15,932 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:51:15,932 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:51:15,933 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:51:15,935 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-03 01:51:16,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:51:16,433 INFO L263 TraceCheckSpWp]: Trace formula consists of 862 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 01:51:16,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:51:16,591 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-03 01:51:16,591 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:51:16,592 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:51:16,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [523659439] [2022-11-03 01:51:16,592 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [523659439] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:51:16,592 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:51:16,592 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 01:51:16,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231881414] [2022-11-03 01:51:16,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:51:16,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 01:51:16,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:51:16,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 01:51:16,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 01:51:16,594 INFO L87 Difference]: Start difference. First operand 83 states and 113 transitions. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-03 01:51:16,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:51:16,659 INFO L93 Difference]: Finished difference Result 146 states and 200 transitions. [2022-11-03 01:51:16,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 01:51:16,660 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 86 [2022-11-03 01:51:16,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:51:16,661 INFO L225 Difference]: With dead ends: 146 [2022-11-03 01:51:16,661 INFO L226 Difference]: Without dead ends: 83 [2022-11-03 01:51:16,661 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 83 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 01:51:16,662 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 58 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 01:51:16,663 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 164 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 01:51:16,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2022-11-03 01:51:16,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2022-11-03 01:51:16,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 77 states have (on average 1.3506493506493507) internal successors, (104), 77 states have internal predecessors, (104), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-03 01:51:16,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 112 transitions. [2022-11-03 01:51:16,672 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 112 transitions. Word has length 86 [2022-11-03 01:51:16,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:51:16,673 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 112 transitions. [2022-11-03 01:51:16,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-03 01:51:16,673 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 112 transitions. [2022-11-03 01:51:16,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-11-03 01:51:16,675 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:51:16,675 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:51:16,701 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-03 01:51:16,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:51:16,896 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:51:16,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:51:16,897 INFO L85 PathProgramCache]: Analyzing trace with hash -991247527, now seen corresponding path program 1 times [2022-11-03 01:51:16,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:51:16,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [107982345] [2022-11-03 01:51:16,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:51:16,898 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:51:16,898 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:51:16,899 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:51:16,900 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-03 01:51:17,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:51:17,355 INFO L263 TraceCheckSpWp]: Trace formula consists of 862 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 01:51:17,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:51:17,575 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-03 01:51:17,576 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:51:17,576 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:51:17,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [107982345] [2022-11-03 01:51:17,576 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [107982345] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:51:17,576 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:51:17,577 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 01:51:17,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272158657] [2022-11-03 01:51:17,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:51:17,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 01:51:17,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:51:17,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 01:51:17,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-03 01:51:17,579 INFO L87 Difference]: Start difference. First operand 83 states and 112 transitions. Second operand has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-03 01:51:17,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:51:17,617 INFO L93 Difference]: Finished difference Result 160 states and 217 transitions. [2022-11-03 01:51:17,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 01:51:17,618 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 86 [2022-11-03 01:51:17,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:51:17,619 INFO L225 Difference]: With dead ends: 160 [2022-11-03 01:51:17,619 INFO L226 Difference]: Without dead ends: 97 [2022-11-03 01:51:17,620 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-03 01:51:17,621 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 25 mSDsluCounter, 269 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 349 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 25 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 01:51:17,621 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 349 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 25 Unchecked, 0.0s Time] [2022-11-03 01:51:17,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2022-11-03 01:51:17,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2022-11-03 01:51:17,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 91 states have (on average 1.3406593406593406) internal successors, (122), 91 states have internal predecessors, (122), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-03 01:51:17,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 130 transitions. [2022-11-03 01:51:17,631 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 130 transitions. Word has length 86 [2022-11-03 01:51:17,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:51:17,632 INFO L495 AbstractCegarLoop]: Abstraction has 97 states and 130 transitions. [2022-11-03 01:51:17,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-03 01:51:17,632 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 130 transitions. [2022-11-03 01:51:17,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-11-03 01:51:17,633 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:51:17,633 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:51:17,664 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-03 01:51:17,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:51:17,859 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:51:17,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:51:17,859 INFO L85 PathProgramCache]: Analyzing trace with hash -1884733865, now seen corresponding path program 1 times [2022-11-03 01:51:17,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:51:17,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [128791713] [2022-11-03 01:51:17,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:51:17,861 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:51:17,861 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:51:17,862 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:51:17,868 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-03 01:51:18,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:51:18,418 INFO L263 TraceCheckSpWp]: Trace formula consists of 862 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 01:51:18,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:51:18,666 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-03 01:51:18,666 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:51:18,667 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:51:18,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [128791713] [2022-11-03 01:51:18,667 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [128791713] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:51:18,667 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:51:18,667 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 01:51:18,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540484562] [2022-11-03 01:51:18,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:51:18,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 01:51:18,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:51:18,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 01:51:18,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 01:51:18,669 INFO L87 Difference]: Start difference. First operand 97 states and 130 transitions. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-03 01:51:18,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:51:18,708 INFO L93 Difference]: Finished difference Result 160 states and 216 transitions. [2022-11-03 01:51:18,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 01:51:18,709 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 86 [2022-11-03 01:51:18,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:51:18,710 INFO L225 Difference]: With dead ends: 160 [2022-11-03 01:51:18,710 INFO L226 Difference]: Without dead ends: 97 [2022-11-03 01:51:18,711 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 83 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 01:51:18,711 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 37 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 01:51:18,712 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 164 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 01:51:18,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2022-11-03 01:51:18,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2022-11-03 01:51:18,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 91 states have (on average 1.3296703296703296) internal successors, (121), 91 states have internal predecessors, (121), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-03 01:51:18,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 129 transitions. [2022-11-03 01:51:18,721 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 129 transitions. Word has length 86 [2022-11-03 01:51:18,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:51:18,721 INFO L495 AbstractCegarLoop]: Abstraction has 97 states and 129 transitions. [2022-11-03 01:51:18,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-03 01:51:18,722 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 129 transitions. [2022-11-03 01:51:18,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-11-03 01:51:18,723 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:51:18,723 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:51:18,750 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-03 01:51:18,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:51:18,938 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:51:18,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:51:18,938 INFO L85 PathProgramCache]: Analyzing trace with hash -1957120423, now seen corresponding path program 1 times [2022-11-03 01:51:18,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:51:18,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1786934043] [2022-11-03 01:51:18,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:51:18,940 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:51:18,940 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:51:18,942 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:51:18,984 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-03 01:51:19,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:51:19,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 862 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 01:51:19,443 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:51:19,700 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-03 01:51:19,700 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:51:19,701 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:51:19,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1786934043] [2022-11-03 01:51:19,701 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1786934043] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:51:19,701 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:51:19,701 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 01:51:19,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122184447] [2022-11-03 01:51:19,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:51:19,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 01:51:19,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:51:19,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 01:51:19,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 01:51:19,702 INFO L87 Difference]: Start difference. First operand 97 states and 129 transitions. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-03 01:51:19,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:51:19,762 INFO L93 Difference]: Finished difference Result 160 states and 214 transitions. [2022-11-03 01:51:19,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 01:51:19,763 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 86 [2022-11-03 01:51:19,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:51:19,764 INFO L225 Difference]: With dead ends: 160 [2022-11-03 01:51:19,764 INFO L226 Difference]: Without dead ends: 97 [2022-11-03 01:51:19,764 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 83 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 01:51:19,765 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 32 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 01:51:19,765 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 162 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 01:51:19,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2022-11-03 01:51:19,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2022-11-03 01:51:19,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 91 states have (on average 1.3186813186813187) internal successors, (120), 91 states have internal predecessors, (120), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-03 01:51:19,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 128 transitions. [2022-11-03 01:51:19,774 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 128 transitions. Word has length 86 [2022-11-03 01:51:19,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:51:19,774 INFO L495 AbstractCegarLoop]: Abstraction has 97 states and 128 transitions. [2022-11-03 01:51:19,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-03 01:51:19,775 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 128 transitions. [2022-11-03 01:51:19,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-11-03 01:51:19,776 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:51:19,776 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:51:19,802 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-11-03 01:51:19,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:51:19,990 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:51:19,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:51:19,990 INFO L85 PathProgramCache]: Analyzing trace with hash -570917029, now seen corresponding path program 1 times [2022-11-03 01:51:19,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:51:19,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1261936822] [2022-11-03 01:51:19,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:51:19,992 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:51:19,992 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:51:19,993 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:51:19,996 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-03 01:51:20,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:51:20,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 862 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-03 01:51:20,450 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:51:20,624 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-03 01:51:20,625 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:51:20,625 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:51:20,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1261936822] [2022-11-03 01:51:20,625 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1261936822] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:51:20,625 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:51:20,625 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 01:51:20,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820929602] [2022-11-03 01:51:20,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:51:20,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 01:51:20,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:51:20,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 01:51:20,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 01:51:20,627 INFO L87 Difference]: Start difference. First operand 97 states and 128 transitions. Second operand has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-03 01:51:20,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:51:20,976 INFO L93 Difference]: Finished difference Result 333 states and 443 transitions. [2022-11-03 01:51:20,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-03 01:51:20,976 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 86 [2022-11-03 01:51:20,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:51:20,978 INFO L225 Difference]: With dead ends: 333 [2022-11-03 01:51:20,978 INFO L226 Difference]: Without dead ends: 270 [2022-11-03 01:51:20,979 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-11-03 01:51:20,979 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 437 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 437 SdHoareTripleChecker+Valid, 475 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 01:51:20,979 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [437 Valid, 475 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 01:51:20,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2022-11-03 01:51:20,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 165. [2022-11-03 01:51:20,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 159 states have (on average 1.320754716981132) internal successors, (210), 159 states have internal predecessors, (210), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-03 01:51:20,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 218 transitions. [2022-11-03 01:51:20,989 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 218 transitions. Word has length 86 [2022-11-03 01:51:20,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:51:20,990 INFO L495 AbstractCegarLoop]: Abstraction has 165 states and 218 transitions. [2022-11-03 01:51:20,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-03 01:51:20,990 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 218 transitions. [2022-11-03 01:51:20,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-11-03 01:51:20,991 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:51:20,991 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:51:21,017 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-03 01:51:21,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:51:21,212 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:51:21,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:51:21,212 INFO L85 PathProgramCache]: Analyzing trace with hash 1800822233, now seen corresponding path program 1 times [2022-11-03 01:51:21,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:51:21,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1842054925] [2022-11-03 01:51:21,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:51:21,213 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:51:21,213 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:51:21,214 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:51:21,215 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-03 01:51:21,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:51:21,698 INFO L263 TraceCheckSpWp]: Trace formula consists of 862 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-03 01:51:21,703 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:51:22,477 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-03 01:51:22,477 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:51:22,477 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:51:22,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1842054925] [2022-11-03 01:51:22,477 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1842054925] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:51:22,478 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:51:22,478 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-03 01:51:22,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125342116] [2022-11-03 01:51:22,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:51:22,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 01:51:22,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:51:22,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 01:51:22,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-03 01:51:22,479 INFO L87 Difference]: Start difference. First operand 165 states and 218 transitions. Second operand has 8 states, 8 states have (on average 9.0) internal successors, (72), 8 states have internal predecessors, (72), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-03 01:51:22,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:51:22,580 INFO L93 Difference]: Finished difference Result 318 states and 424 transitions. [2022-11-03 01:51:22,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 01:51:22,584 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.0) internal successors, (72), 8 states have internal predecessors, (72), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 86 [2022-11-03 01:51:22,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:51:22,585 INFO L225 Difference]: With dead ends: 318 [2022-11-03 01:51:22,585 INFO L226 Difference]: Without dead ends: 211 [2022-11-03 01:51:22,585 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-11-03 01:51:22,586 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 13 mSDsluCounter, 412 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 485 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 39 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 01:51:22,586 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 485 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 39 Unchecked, 0.0s Time] [2022-11-03 01:51:22,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2022-11-03 01:51:22,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 211. [2022-11-03 01:51:22,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 205 states have (on average 1.3219512195121952) internal successors, (271), 205 states have internal predecessors, (271), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-03 01:51:22,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 279 transitions. [2022-11-03 01:51:22,597 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 279 transitions. Word has length 86 [2022-11-03 01:51:22,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:51:22,597 INFO L495 AbstractCegarLoop]: Abstraction has 211 states and 279 transitions. [2022-11-03 01:51:22,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.0) internal successors, (72), 8 states have internal predecessors, (72), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-03 01:51:22,598 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 279 transitions. [2022-11-03 01:51:22,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-11-03 01:51:22,599 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:51:22,599 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:51:22,630 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-11-03 01:51:22,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:51:22,820 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:51:22,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:51:22,820 INFO L85 PathProgramCache]: Analyzing trace with hash 1941370843, now seen corresponding path program 1 times [2022-11-03 01:51:22,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:51:22,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1159619881] [2022-11-03 01:51:22,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:51:22,821 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:51:22,821 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:51:22,823 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:51:22,824 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-11-03 01:51:23,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:51:23,255 INFO L263 TraceCheckSpWp]: Trace formula consists of 862 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-03 01:51:23,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:51:23,515 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-03 01:51:23,516 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:51:23,758 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-03 01:51:23,758 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:51:23,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1159619881] [2022-11-03 01:51:23,759 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1159619881] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 01:51:23,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1225153540] [2022-11-03 01:51:23,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:51:23,759 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 01:51:23,759 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 01:51:23,766 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 01:51:23,782 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2022-11-03 01:51:24,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:51:24,610 INFO L263 TraceCheckSpWp]: Trace formula consists of 862 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-03 01:51:24,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:51:24,808 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-03 01:51:24,808 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:51:24,972 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-03 01:51:24,972 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1225153540] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 01:51:24,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [897540826] [2022-11-03 01:51:24,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:51:24,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:51:24,973 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:51:24,979 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:51:24,986 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-03 01:51:25,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:51:25,387 INFO L263 TraceCheckSpWp]: Trace formula consists of 862 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-03 01:51:25,391 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:51:25,594 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-03 01:51:25,595 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:51:25,742 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-03 01:51:25,742 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [897540826] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 01:51:25,742 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-03 01:51:25,742 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 8, 8] total 11 [2022-11-03 01:51:25,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609222316] [2022-11-03 01:51:25,743 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-03 01:51:25,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-03 01:51:25,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:51:25,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-03 01:51:25,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-11-03 01:51:25,744 INFO L87 Difference]: Start difference. First operand 211 states and 279 transitions. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 3 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-03 01:51:26,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:51:26,435 INFO L93 Difference]: Finished difference Result 827 states and 1106 transitions. [2022-11-03 01:51:26,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-03 01:51:26,435 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 3 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 86 [2022-11-03 01:51:26,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:51:26,439 INFO L225 Difference]: With dead ends: 827 [2022-11-03 01:51:26,439 INFO L226 Difference]: Without dead ends: 720 [2022-11-03 01:51:26,440 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 521 GetRequests, 501 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=142, Invalid=320, Unknown=0, NotChecked=0, Total=462 [2022-11-03 01:51:26,440 INFO L413 NwaCegarLoop]: 201 mSDtfsCounter, 618 mSDsluCounter, 1009 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 618 SdHoareTripleChecker+Valid, 1210 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-03 01:51:26,441 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [618 Valid, 1210 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-03 01:51:26,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 720 states. [2022-11-03 01:51:26,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 720 to 272. [2022-11-03 01:51:26,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 264 states have (on average 1.3181818181818181) internal successors, (348), 264 states have internal predecessors, (348), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-03 01:51:26,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 360 transitions. [2022-11-03 01:51:26,457 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 360 transitions. Word has length 86 [2022-11-03 01:51:26,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:51:26,458 INFO L495 AbstractCegarLoop]: Abstraction has 272 states and 360 transitions. [2022-11-03 01:51:26,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 3 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-03 01:51:26,458 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 360 transitions. [2022-11-03 01:51:26,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-11-03 01:51:26,460 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:51:26,460 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:51:26,499 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-03 01:51:26,703 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-11-03 01:51:26,883 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (14)] Ended with exit code 0 [2022-11-03 01:51:27,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt [2022-11-03 01:51:27,074 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:51:27,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:51:27,075 INFO L85 PathProgramCache]: Analyzing trace with hash 1132024217, now seen corresponding path program 1 times [2022-11-03 01:51:27,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:51:27,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1237110805] [2022-11-03 01:51:27,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:51:27,076 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:51:27,076 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:51:27,077 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:51:27,115 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-11-03 01:51:27,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:51:27,557 INFO L263 TraceCheckSpWp]: Trace formula consists of 862 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-03 01:51:27,564 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:51:28,173 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-03 01:51:28,173 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:51:28,501 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:51:28,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1237110805] [2022-11-03 01:51:28,502 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1237110805] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:51:28,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [842338611] [2022-11-03 01:51:28,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:51:28,502 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 01:51:28,502 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 01:51:28,504 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 01:51:28,506 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2022-11-03 01:51:29,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:51:29,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 862 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-03 01:51:29,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:51:29,982 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-03 01:51:29,982 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:51:30,276 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [842338611] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:51:30,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [498316711] [2022-11-03 01:51:30,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:51:30,277 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:51:30,277 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:51:30,278 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:51:30,294 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-03 01:51:30,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:51:30,643 INFO L263 TraceCheckSpWp]: Trace formula consists of 862 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-03 01:51:30,649 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:51:31,262 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-03 01:51:31,263 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:51:31,525 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [498316711] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:51:31,525 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 01:51:31,525 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 7] total 9 [2022-11-03 01:51:31,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483019160] [2022-11-03 01:51:31,525 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 01:51:31,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-03 01:51:31,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:51:31,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-03 01:51:31,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2022-11-03 01:51:31,526 INFO L87 Difference]: Start difference. First operand 272 states and 360 transitions. Second operand has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 3 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-03 01:51:31,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:51:31,838 INFO L93 Difference]: Finished difference Result 676 states and 914 transitions. [2022-11-03 01:51:31,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 01:51:31,839 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 3 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 86 [2022-11-03 01:51:31,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:51:31,841 INFO L225 Difference]: With dead ends: 676 [2022-11-03 01:51:31,842 INFO L226 Difference]: Without dead ends: 526 [2022-11-03 01:51:31,842 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 479 GetRequests, 464 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=87, Invalid=185, Unknown=0, NotChecked=0, Total=272 [2022-11-03 01:51:31,843 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 294 mSDsluCounter, 457 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 294 SdHoareTripleChecker+Valid, 531 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 44 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 01:51:31,843 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [294 Valid, 531 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 46 Invalid, 0 Unknown, 44 Unchecked, 0.2s Time] [2022-11-03 01:51:31,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2022-11-03 01:51:31,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 394. [2022-11-03 01:51:31,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 382 states have (on average 1.324607329842932) internal successors, (506), 382 states have internal predecessors, (506), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-03 01:51:31,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 526 transitions. [2022-11-03 01:51:31,869 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 526 transitions. Word has length 86 [2022-11-03 01:51:31,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:51:31,869 INFO L495 AbstractCegarLoop]: Abstraction has 394 states and 526 transitions. [2022-11-03 01:51:31,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 3 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-03 01:51:31,870 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 526 transitions. [2022-11-03 01:51:31,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-11-03 01:51:31,872 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:51:31,872 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:51:31,924 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-11-03 01:51:32,100 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (16)] Ended with exit code 0 [2022-11-03 01:51:32,292 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (17)] Forceful destruction successful, exit code 0 [2022-11-03 01:51:32,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt [2022-11-03 01:51:32,486 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:51:32,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:51:32,487 INFO L85 PathProgramCache]: Analyzing trace with hash 1775947229, now seen corresponding path program 1 times [2022-11-03 01:51:32,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:51:32,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [796269433] [2022-11-03 01:51:32,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:51:32,488 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:51:32,488 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:51:32,489 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:51:32,490 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-11-03 01:51:33,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:51:33,216 INFO L263 TraceCheckSpWp]: Trace formula consists of 1376 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 01:51:33,222 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:51:33,583 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 97 proven. 14 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-03 01:51:33,583 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:51:33,922 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:51:33,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [796269433] [2022-11-03 01:51:33,922 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [796269433] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:51:33,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [587560245] [2022-11-03 01:51:33,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:51:33,922 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 01:51:33,922 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 01:51:33,923 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 01:51:33,954 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2022-11-03 01:51:34,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:51:34,691 INFO L263 TraceCheckSpWp]: Trace formula consists of 1376 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 01:51:34,696 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:51:34,759 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 96 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-11-03 01:51:34,759 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:51:34,759 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [587560245] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:51:34,760 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 01:51:34,760 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2022-11-03 01:51:34,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308320221] [2022-11-03 01:51:34,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:51:34,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 01:51:34,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:51:34,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 01:51:34,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2022-11-03 01:51:34,761 INFO L87 Difference]: Start difference. First operand 394 states and 526 transitions. Second operand has 5 states, 5 states have (on average 22.8) internal successors, (114), 5 states have internal predecessors, (114), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-03 01:51:34,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:51:34,984 INFO L93 Difference]: Finished difference Result 1092 states and 1465 transitions. [2022-11-03 01:51:34,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 01:51:34,984 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.8) internal successors, (114), 5 states have internal predecessors, (114), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 149 [2022-11-03 01:51:34,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:51:34,988 INFO L225 Difference]: With dead ends: 1092 [2022-11-03 01:51:34,988 INFO L226 Difference]: Without dead ends: 942 [2022-11-03 01:51:34,989 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 437 GetRequests, 420 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2022-11-03 01:51:34,990 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 285 mSDsluCounter, 258 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 287 SdHoareTripleChecker+Valid, 358 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:51:34,990 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [287 Valid, 358 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:51:34,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 942 states. [2022-11-03 01:51:35,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 942 to 398. [2022-11-03 01:51:35,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 398 states, 386 states have (on average 1.3212435233160622) internal successors, (510), 386 states have internal predecessors, (510), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-03 01:51:35,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 530 transitions. [2022-11-03 01:51:35,018 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 530 transitions. Word has length 149 [2022-11-03 01:51:35,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:51:35,019 INFO L495 AbstractCegarLoop]: Abstraction has 398 states and 530 transitions. [2022-11-03 01:51:35,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.8) internal successors, (114), 5 states have internal predecessors, (114), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-03 01:51:35,019 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 530 transitions. [2022-11-03 01:51:35,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-11-03 01:51:35,021 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:51:35,021 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:51:35,034 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (20)] Forceful destruction successful, exit code 0 [2022-11-03 01:51:35,244 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (19)] Ended with exit code 0 [2022-11-03 01:51:35,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:51:35,427 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:51:35,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:51:35,427 INFO L85 PathProgramCache]: Analyzing trace with hash 1215247451, now seen corresponding path program 1 times [2022-11-03 01:51:35,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:51:35,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [180204783] [2022-11-03 01:51:35,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:51:35,428 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:51:35,428 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:51:35,429 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:51:35,432 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-11-03 01:51:36,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:51:36,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 1376 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 01:51:36,067 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:51:36,424 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 97 proven. 14 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-03 01:51:36,424 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:51:36,738 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:51:36,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [180204783] [2022-11-03 01:51:36,738 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [180204783] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:51:36,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [59988267] [2022-11-03 01:51:36,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:51:36,739 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 01:51:36,739 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 01:51:36,740 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 01:51:36,770 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (22)] Waiting until timeout for monitored process [2022-11-03 01:51:37,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:51:37,520 INFO L263 TraceCheckSpWp]: Trace formula consists of 1376 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 01:51:37,523 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:51:37,613 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-11-03 01:51:37,616 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:51:37,616 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [59988267] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:51:37,616 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 01:51:37,616 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2022-11-03 01:51:37,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739398412] [2022-11-03 01:51:37,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:51:37,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 01:51:37,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:51:37,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 01:51:37,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2022-11-03 01:51:37,619 INFO L87 Difference]: Start difference. First operand 398 states and 530 transitions. Second operand has 5 states, 5 states have (on average 24.6) internal successors, (123), 5 states have internal predecessors, (123), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-03 01:51:37,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:51:37,776 INFO L93 Difference]: Finished difference Result 1434 states and 1912 transitions. [2022-11-03 01:51:37,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 01:51:37,777 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.6) internal successors, (123), 5 states have internal predecessors, (123), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 149 [2022-11-03 01:51:37,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:51:37,781 INFO L225 Difference]: With dead ends: 1434 [2022-11-03 01:51:37,781 INFO L226 Difference]: Without dead ends: 1122 [2022-11-03 01:51:37,783 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 438 GetRequests, 421 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2022-11-03 01:51:37,783 INFO L413 NwaCegarLoop]: 216 mSDtfsCounter, 226 mSDsluCounter, 275 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 491 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:51:37,783 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [228 Valid, 491 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:51:37,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1122 states. [2022-11-03 01:51:37,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1122 to 532. [2022-11-03 01:51:37,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 532 states, 520 states have (on average 1.301923076923077) internal successors, (677), 520 states have internal predecessors, (677), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-03 01:51:37,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 532 states to 532 states and 697 transitions. [2022-11-03 01:51:37,813 INFO L78 Accepts]: Start accepts. Automaton has 532 states and 697 transitions. Word has length 149 [2022-11-03 01:51:37,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:51:37,813 INFO L495 AbstractCegarLoop]: Abstraction has 532 states and 697 transitions. [2022-11-03 01:51:37,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.6) internal successors, (123), 5 states have internal predecessors, (123), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-03 01:51:37,814 INFO L276 IsEmpty]: Start isEmpty. Operand 532 states and 697 transitions. [2022-11-03 01:51:37,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-11-03 01:51:37,816 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:51:37,816 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:51:37,822 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (22)] Forceful destruction successful, exit code 0 [2022-11-03 01:51:38,039 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (21)] Ended with exit code 0 [2022-11-03 01:51:38,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:51:38,221 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:51:38,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:51:38,222 INFO L85 PathProgramCache]: Analyzing trace with hash 1199728733, now seen corresponding path program 1 times [2022-11-03 01:51:38,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:51:38,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [511714024] [2022-11-03 01:51:38,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:51:38,223 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:51:38,223 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:51:38,224 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:51:38,225 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-11-03 01:51:38,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:51:38,838 INFO L263 TraceCheckSpWp]: Trace formula consists of 1376 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 01:51:38,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:51:39,182 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 97 proven. 14 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-03 01:51:39,182 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:51:39,491 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:51:39,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [511714024] [2022-11-03 01:51:39,491 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [511714024] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:51:39,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [418965201] [2022-11-03 01:51:39,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:51:39,492 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 01:51:39,492 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 01:51:39,494 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 01:51:39,518 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (24)] Waiting until timeout for monitored process [2022-11-03 01:51:40,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:51:40,320 INFO L263 TraceCheckSpWp]: Trace formula consists of 1376 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 01:51:40,324 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:51:40,405 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 96 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-11-03 01:51:40,405 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:51:40,405 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [418965201] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:51:40,405 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 01:51:40,406 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2022-11-03 01:51:40,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529168069] [2022-11-03 01:51:40,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:51:40,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 01:51:40,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:51:40,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 01:51:40,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2022-11-03 01:51:40,407 INFO L87 Difference]: Start difference. First operand 532 states and 697 transitions. Second operand has 5 states, 5 states have (on average 22.8) internal successors, (114), 5 states have internal predecessors, (114), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-03 01:51:40,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:51:40,644 INFO L93 Difference]: Finished difference Result 1366 states and 1803 transitions. [2022-11-03 01:51:40,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 01:51:40,647 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.8) internal successors, (114), 5 states have internal predecessors, (114), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 149 [2022-11-03 01:51:40,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:51:40,652 INFO L225 Difference]: With dead ends: 1366 [2022-11-03 01:51:40,652 INFO L226 Difference]: Without dead ends: 1162 [2022-11-03 01:51:40,653 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 438 GetRequests, 421 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2022-11-03 01:51:40,653 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 270 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 272 SdHoareTripleChecker+Valid, 365 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:51:40,654 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [272 Valid, 365 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:51:40,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1162 states. [2022-11-03 01:51:40,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1162 to 580. [2022-11-03 01:51:40,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 580 states, 568 states have (on average 1.2975352112676057) internal successors, (737), 568 states have internal predecessors, (737), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-03 01:51:40,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 580 states to 580 states and 757 transitions. [2022-11-03 01:51:40,684 INFO L78 Accepts]: Start accepts. Automaton has 580 states and 757 transitions. Word has length 149 [2022-11-03 01:51:40,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:51:40,685 INFO L495 AbstractCegarLoop]: Abstraction has 580 states and 757 transitions. [2022-11-03 01:51:40,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.8) internal successors, (114), 5 states have internal predecessors, (114), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-03 01:51:40,685 INFO L276 IsEmpty]: Start isEmpty. Operand 580 states and 757 transitions. [2022-11-03 01:51:40,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-11-03 01:51:40,687 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:51:40,688 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:51:40,722 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2022-11-03 01:51:40,904 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (24)] Ended with exit code 0 [2022-11-03 01:51:41,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt [2022-11-03 01:51:41,101 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:51:41,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:51:41,101 INFO L85 PathProgramCache]: Analyzing trace with hash 306242395, now seen corresponding path program 1 times [2022-11-03 01:51:41,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:51:41,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [365372739] [2022-11-03 01:51:41,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:51:41,102 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:51:41,103 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:51:41,103 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:51:41,105 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-11-03 01:51:41,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:51:41,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 1376 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 01:51:41,725 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:51:42,041 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 97 proven. 14 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-03 01:51:42,041 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:51:42,322 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:51:42,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [365372739] [2022-11-03 01:51:42,322 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [365372739] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:51:42,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1543512007] [2022-11-03 01:51:42,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:51:42,322 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 01:51:42,322 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 01:51:42,323 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 01:51:42,325 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (26)] Waiting until timeout for monitored process [2022-11-03 01:51:43,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:51:43,533 INFO L263 TraceCheckSpWp]: Trace formula consists of 1376 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-03 01:51:43,536 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:51:43,922 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 89 proven. 22 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-03 01:51:43,922 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:51:44,287 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 57 proven. 22 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-03 01:51:44,287 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1543512007] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 01:51:44,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [740693288] [2022-11-03 01:51:44,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:51:44,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:51:44,288 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:51:44,288 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:51:44,290 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-11-03 01:51:44,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:51:44,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 1376 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-03 01:51:44,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:51:45,142 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 89 proven. 22 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-03 01:51:45,142 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:51:45,335 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 57 proven. 22 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-03 01:51:45,335 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [740693288] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 01:51:45,335 INFO L184 FreeRefinementEngine]: Found 0 perfect and 5 imperfect interpolant sequences. [2022-11-03 01:51:45,335 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 8] total 20 [2022-11-03 01:51:45,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977144600] [2022-11-03 01:51:45,336 INFO L85 oduleStraightlineAll]: Using 5 imperfect interpolants to construct interpolant automaton [2022-11-03 01:51:45,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-03 01:51:45,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:51:45,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-03 01:51:45,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=542, Unknown=0, NotChecked=0, Total=600 [2022-11-03 01:51:45,338 INFO L87 Difference]: Start difference. First operand 580 states and 757 transitions. Second operand has 20 states, 20 states have (on average 13.65) internal successors, (273), 20 states have internal predecessors, (273), 7 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 7 states have call successors, (16) [2022-11-03 01:51:49,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:51:49,280 INFO L93 Difference]: Finished difference Result 4076 states and 5297 transitions. [2022-11-03 01:51:49,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-11-03 01:51:49,281 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 13.65) internal successors, (273), 20 states have internal predecessors, (273), 7 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 7 states have call successors, (16) Word has length 149 [2022-11-03 01:51:49,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:51:49,292 INFO L225 Difference]: With dead ends: 4076 [2022-11-03 01:51:49,292 INFO L226 Difference]: Without dead ends: 3824 [2022-11-03 01:51:49,296 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 936 GetRequests, 853 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1475 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1552, Invalid=5588, Unknown=0, NotChecked=0, Total=7140 [2022-11-03 01:51:49,296 INFO L413 NwaCegarLoop]: 241 mSDtfsCounter, 1977 mSDsluCounter, 2369 mSDsCounter, 0 mSdLazyCounter, 1069 mSolverCounterSat, 144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1977 SdHoareTripleChecker+Valid, 2610 SdHoareTripleChecker+Invalid, 1213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 1069 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-03 01:51:49,297 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1977 Valid, 2610 Invalid, 1213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [144 Valid, 1069 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-03 01:51:49,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3824 states. [2022-11-03 01:51:49,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3824 to 1254. [2022-11-03 01:51:49,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1254 states, 1218 states have (on average 1.2742200328407225) internal successors, (1552), 1218 states have internal predecessors, (1552), 34 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2022-11-03 01:51:49,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1254 states to 1254 states and 1620 transitions. [2022-11-03 01:51:49,438 INFO L78 Accepts]: Start accepts. Automaton has 1254 states and 1620 transitions. Word has length 149 [2022-11-03 01:51:49,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:51:49,439 INFO L495 AbstractCegarLoop]: Abstraction has 1254 states and 1620 transitions. [2022-11-03 01:51:49,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 13.65) internal successors, (273), 20 states have internal predecessors, (273), 7 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 7 states have call successors, (16) [2022-11-03 01:51:49,439 INFO L276 IsEmpty]: Start isEmpty. Operand 1254 states and 1620 transitions. [2022-11-03 01:51:49,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-11-03 01:51:49,443 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:51:49,443 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:51:49,495 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-11-03 01:51:49,673 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (26)] Ended with exit code 0 [2022-11-03 01:51:49,884 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (25)] Ended with exit code 0 [2022-11-03 01:51:50,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:51:50,066 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:51:50,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:51:50,067 INFO L85 PathProgramCache]: Analyzing trace with hash 1275631199, now seen corresponding path program 1 times [2022-11-03 01:51:50,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:51:50,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [287191550] [2022-11-03 01:51:50,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:51:50,068 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:51:50,068 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:51:50,069 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:51:50,070 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2022-11-03 01:51:50,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:51:50,702 INFO L263 TraceCheckSpWp]: Trace formula consists of 1376 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 01:51:50,705 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:51:51,031 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 75 proven. 36 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-03 01:51:51,031 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:51:51,337 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:51:51,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [287191550] [2022-11-03 01:51:51,337 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [287191550] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:51:51,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [617996266] [2022-11-03 01:51:51,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:51:51,337 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 01:51:51,337 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 01:51:51,338 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 01:51:51,341 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (29)] Waiting until timeout for monitored process [2022-11-03 01:51:52,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:51:52,090 INFO L263 TraceCheckSpWp]: Trace formula consists of 1376 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 01:51:52,094 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:51:52,142 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 98 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-11-03 01:51:52,142 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:51:52,143 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [617996266] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:51:52,143 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 01:51:52,143 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 10 [2022-11-03 01:51:52,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996530277] [2022-11-03 01:51:52,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:51:52,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 01:51:52,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:51:52,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 01:51:52,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2022-11-03 01:51:52,145 INFO L87 Difference]: Start difference. First operand 1254 states and 1620 transitions. Second operand has 5 states, 5 states have (on average 23.2) internal successors, (116), 5 states have internal predecessors, (116), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-03 01:51:52,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:51:52,391 INFO L93 Difference]: Finished difference Result 4692 states and 6039 transitions. [2022-11-03 01:51:52,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 01:51:52,392 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.2) internal successors, (116), 5 states have internal predecessors, (116), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 149 [2022-11-03 01:51:52,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:51:52,401 INFO L225 Difference]: With dead ends: 4692 [2022-11-03 01:51:52,401 INFO L226 Difference]: Without dead ends: 3662 [2022-11-03 01:51:52,403 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 438 GetRequests, 422 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2022-11-03 01:51:52,404 INFO L413 NwaCegarLoop]: 218 mSDtfsCounter, 258 mSDsluCounter, 307 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 260 SdHoareTripleChecker+Valid, 525 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:51:52,404 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [260 Valid, 525 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:51:52,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3662 states. [2022-11-03 01:51:52,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3662 to 1642. [2022-11-03 01:51:52,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1642 states, 1606 states have (on average 1.2671232876712328) internal successors, (2035), 1606 states have internal predecessors, (2035), 34 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2022-11-03 01:51:52,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1642 states to 1642 states and 2103 transitions. [2022-11-03 01:51:52,518 INFO L78 Accepts]: Start accepts. Automaton has 1642 states and 2103 transitions. Word has length 149 [2022-11-03 01:51:52,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:51:52,519 INFO L495 AbstractCegarLoop]: Abstraction has 1642 states and 2103 transitions. [2022-11-03 01:51:52,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.2) internal successors, (116), 5 states have internal predecessors, (116), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-03 01:51:52,519 INFO L276 IsEmpty]: Start isEmpty. Operand 1642 states and 2103 transitions. [2022-11-03 01:51:52,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-11-03 01:51:52,524 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:51:52,524 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:51:52,556 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2022-11-03 01:51:52,747 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (29)] Ended with exit code 0 [2022-11-03 01:51:52,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt [2022-11-03 01:51:52,944 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:51:52,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:51:52,944 INFO L85 PathProgramCache]: Analyzing trace with hash 1699277921, now seen corresponding path program 1 times [2022-11-03 01:51:52,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:51:52,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [371342239] [2022-11-03 01:51:52,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:51:52,945 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:51:52,945 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:51:52,946 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:51:52,954 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2022-11-03 01:51:53,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:51:53,577 INFO L263 TraceCheckSpWp]: Trace formula consists of 1376 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 01:51:53,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:51:53,920 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 71 proven. 40 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-03 01:51:53,920 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:51:54,259 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:51:54,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [371342239] [2022-11-03 01:51:54,259 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [371342239] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:51:54,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [301711178] [2022-11-03 01:51:54,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:51:54,260 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 01:51:54,260 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 01:51:54,261 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 01:51:54,262 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (31)] Waiting until timeout for monitored process [2022-11-03 01:51:54,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:51:55,019 INFO L263 TraceCheckSpWp]: Trace formula consists of 1376 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 01:51:55,022 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:51:55,073 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 98 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-11-03 01:51:55,073 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:51:55,073 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [301711178] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:51:55,074 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 01:51:55,074 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 10 [2022-11-03 01:51:55,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46690075] [2022-11-03 01:51:55,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:51:55,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 01:51:55,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:51:55,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 01:51:55,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2022-11-03 01:51:55,075 INFO L87 Difference]: Start difference. First operand 1642 states and 2103 transitions. Second operand has 5 states, 5 states have (on average 23.2) internal successors, (116), 5 states have internal predecessors, (116), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-03 01:51:55,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:51:55,318 INFO L93 Difference]: Finished difference Result 4828 states and 6161 transitions. [2022-11-03 01:51:55,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 01:51:55,319 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.2) internal successors, (116), 5 states have internal predecessors, (116), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 149 [2022-11-03 01:51:55,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:51:55,327 INFO L225 Difference]: With dead ends: 4828 [2022-11-03 01:51:55,327 INFO L226 Difference]: Without dead ends: 3646 [2022-11-03 01:51:55,329 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 438 GetRequests, 422 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2022-11-03 01:51:55,330 INFO L413 NwaCegarLoop]: 221 mSDtfsCounter, 244 mSDsluCounter, 303 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 524 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:51:55,330 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [246 Valid, 524 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:51:55,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3646 states. [2022-11-03 01:51:55,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3646 to 1722. [2022-11-03 01:51:55,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1722 states, 1686 states have (on average 1.2663107947805456) internal successors, (2135), 1686 states have internal predecessors, (2135), 34 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2022-11-03 01:51:55,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1722 states to 1722 states and 2203 transitions. [2022-11-03 01:51:55,448 INFO L78 Accepts]: Start accepts. Automaton has 1722 states and 2203 transitions. Word has length 149 [2022-11-03 01:51:55,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:51:55,449 INFO L495 AbstractCegarLoop]: Abstraction has 1722 states and 2203 transitions. [2022-11-03 01:51:55,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.2) internal successors, (116), 5 states have internal predecessors, (116), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-03 01:51:55,449 INFO L276 IsEmpty]: Start isEmpty. Operand 1722 states and 2203 transitions. [2022-11-03 01:51:55,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-11-03 01:51:55,454 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:51:55,454 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:51:55,486 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2022-11-03 01:51:55,673 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (31)] Ended with exit code 0 [2022-11-03 01:51:55,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt [2022-11-03 01:51:55,870 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:51:55,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:51:55,871 INFO L85 PathProgramCache]: Analyzing trace with hash -1936157853, now seen corresponding path program 1 times [2022-11-03 01:51:55,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:51:55,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1722133633] [2022-11-03 01:51:55,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:51:55,872 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:51:55,872 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:51:55,873 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:51:55,874 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2022-11-03 01:51:56,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:51:56,487 INFO L263 TraceCheckSpWp]: Trace formula consists of 1376 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-03 01:51:56,491 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:51:56,877 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 65 proven. 46 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-03 01:51:56,877 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:51:57,171 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 33 proven. 46 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-03 01:51:57,172 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:51:57,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1722133633] [2022-11-03 01:51:57,172 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1722133633] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 01:51:57,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1365512780] [2022-11-03 01:51:57,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:51:57,173 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 01:51:57,173 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 01:51:57,174 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 01:51:57,190 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (33)] Waiting until timeout for monitored process [2022-11-03 01:51:58,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:51:58,376 INFO L263 TraceCheckSpWp]: Trace formula consists of 1376 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-03 01:51:58,379 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:51:58,719 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 65 proven. 46 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-03 01:51:58,719 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:51:58,994 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 33 proven. 46 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-03 01:51:58,995 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1365512780] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 01:51:58,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [376598946] [2022-11-03 01:51:58,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:51:58,995 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:51:58,995 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:51:58,998 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:51:59,018 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2022-11-03 01:51:59,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:51:59,524 INFO L263 TraceCheckSpWp]: Trace formula consists of 1376 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-03 01:51:59,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:51:59,894 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 65 proven. 46 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-03 01:51:59,894 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:52:00,130 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 33 proven. 46 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-03 01:52:00,130 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [376598946] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 01:52:00,131 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-03 01:52:00,131 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 7, 7, 7] total 12 [2022-11-03 01:52:00,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816725401] [2022-11-03 01:52:00,131 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-03 01:52:00,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-03 01:52:00,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:52:00,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-03 01:52:00,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-11-03 01:52:00,133 INFO L87 Difference]: Start difference. First operand 1722 states and 2203 transitions. Second operand has 12 states, 12 states have (on average 18.583333333333332) internal successors, (223), 12 states have internal predecessors, (223), 5 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) [2022-11-03 01:52:00,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:52:00,740 INFO L93 Difference]: Finished difference Result 3562 states and 4548 transitions. [2022-11-03 01:52:00,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-03 01:52:00,741 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 18.583333333333332) internal successors, (223), 12 states have internal predecessors, (223), 5 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) Word has length 149 [2022-11-03 01:52:00,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:52:00,745 INFO L225 Difference]: With dead ends: 3562 [2022-11-03 01:52:00,745 INFO L226 Difference]: Without dead ends: 2716 [2022-11-03 01:52:00,746 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 895 GetRequests, 878 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=91, Invalid=251, Unknown=0, NotChecked=0, Total=342 [2022-11-03 01:52:00,747 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 251 mSDsluCounter, 804 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 946 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 01:52:00,747 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [251 Valid, 946 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 01:52:00,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2716 states. [2022-11-03 01:52:00,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2716 to 2570. [2022-11-03 01:52:00,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2570 states, 2502 states have (on average 1.2577937649880095) internal successors, (3147), 2502 states have internal predecessors, (3147), 66 states have call successors, (66), 1 states have call predecessors, (66), 1 states have return successors, (66), 66 states have call predecessors, (66), 66 states have call successors, (66) [2022-11-03 01:52:00,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2570 states to 2570 states and 3279 transitions. [2022-11-03 01:52:00,913 INFO L78 Accepts]: Start accepts. Automaton has 2570 states and 3279 transitions. Word has length 149 [2022-11-03 01:52:00,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:52:00,914 INFO L495 AbstractCegarLoop]: Abstraction has 2570 states and 3279 transitions. [2022-11-03 01:52:00,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 18.583333333333332) internal successors, (223), 12 states have internal predecessors, (223), 5 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) [2022-11-03 01:52:00,914 INFO L276 IsEmpty]: Start isEmpty. Operand 2570 states and 3279 transitions. [2022-11-03 01:52:00,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-11-03 01:52:00,920 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:52:00,920 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:52:00,968 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2022-11-03 01:52:01,161 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (33)] Forceful destruction successful, exit code 0 [2022-11-03 01:52:01,364 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (32)] Ended with exit code 0 [2022-11-03 01:52:01,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:52:01,546 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:52:01,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:52:01,547 INFO L85 PathProgramCache]: Analyzing trace with hash -1234557979, now seen corresponding path program 1 times [2022-11-03 01:52:01,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:52:01,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1309598197] [2022-11-03 01:52:01,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:52:01,548 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:52:01,548 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:52:01,549 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:52:01,562 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2022-11-03 01:52:02,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:52:02,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 1376 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-03 01:52:02,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:52:03,021 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 59 proven. 45 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-03 01:52:03,021 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:52:03,432 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:52:03,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1309598197] [2022-11-03 01:52:03,432 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1309598197] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:52:03,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [734212291] [2022-11-03 01:52:03,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:52:03,432 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 01:52:03,432 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 01:52:03,433 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 01:52:03,434 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (36)] Waiting until timeout for monitored process [2022-11-03 01:52:04,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:52:04,623 INFO L263 TraceCheckSpWp]: Trace formula consists of 1376 conjuncts, 118 conjunts are in the unsatisfiable core [2022-11-03 01:52:04,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:53:32,700 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 59 proven. 52 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-03 01:53:32,701 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:53:39,128 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [734212291] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:53:39,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [674252727] [2022-11-03 01:53:39,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:53:39,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:53:39,128 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:53:39,130 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:53:39,131 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2022-11-03 01:53:39,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:53:39,648 INFO L263 TraceCheckSpWp]: Trace formula consists of 1376 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-03 01:53:39,652 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:53:40,940 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 59 proven. 45 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-03 01:53:40,940 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:53:41,997 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [674252727] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:53:41,997 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 01:53:41,998 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 24, 8] total 30 [2022-11-03 01:53:41,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874267289] [2022-11-03 01:53:41,998 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 01:53:41,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-03 01:53:41,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:53:41,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-03 01:53:42,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=1815, Unknown=31, NotChecked=0, Total=1980 [2022-11-03 01:53:42,000 INFO L87 Difference]: Start difference. First operand 2570 states and 3279 transitions. Second operand has 30 states, 30 states have (on average 7.533333333333333) internal successors, (226), 30 states have internal predecessors, (226), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-11-03 01:54:10,501 WARN L234 SmtUtils]: Spent 5.51s on a formula simplification that was a NOOP. DAG size: 305 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:54:23,011 WARN L230 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2022-11-03 01:54:23,011 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 101 [2022-11-03 01:54:23,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-03 01:54:23,013 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 694 GetRequests, 619 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 935 ImplicationChecksByTransitivity, 117.8s TimeCoverageRelationStatistics Valid=532, Invalid=4984, Unknown=34, NotChecked=0, Total=5550 [2022-11-03 01:54:23,013 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 255 mSDsluCounter, 2533 mSDsCounter, 0 mSdLazyCounter, 293 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 2660 SdHoareTripleChecker+Invalid, 1369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1050 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-03 01:54:23,014 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [255 Valid, 2660 Invalid, 1369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 293 Invalid, 0 Unknown, 1050 Unchecked, 1.2s Time] [2022-11-03 01:54:23,022 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (36)] Ended with exit code 0 [2022-11-03 01:54:23,245 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2022-11-03 01:54:23,433 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (35)] Ended with exit code 0 [2022-11-03 01:54:23,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:54:23,615 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:243) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseSuccess(Executor.java:258) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.pop(Scriptor.java:140) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.pop(DiffWrapperScript.java:99) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.pop(WrapperScript.java:153) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.pop(HistoryRecordingScript.java:117) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.pop(ManagedScript.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker.checkImplication(MonolithicImplicationChecker.java:86) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.compare(PredicateUnifier.java:894) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.(PredicateUnifier.java:768) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:345) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicateForConjunction(PredicateUnifier.java:388) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicateForConjunction(PredicateUnifier.java:229) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.getOrConstructPredicate(DeterministicInterpolantAutomaton.java:282) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.constructSuccessorsAndTransitions(DeterministicInterpolantAutomaton.java:304) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:79) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:233) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.TotalizeNwa.internalSuccessors(TotalizeNwa.java:246) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ComplementDeterministicNwa.internalSuccessors(ComplementDeterministicNwa.java:121) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:218) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:210) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.addInternalsAndSuccessors(NestedWordAutomatonReachableStates.java:1058) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.(NestedWordAutomatonReachableStates.java:960) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates.(NestedWordAutomatonReachableStates.java:182) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.computeDifference(Difference.java:137) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.(Difference.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.NwaCegarLoop.computeAutomataDifference(NwaCegarLoop.java:353) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.NwaCegarLoop.refineAbstraction(NwaCegarLoop.java:325) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.refineAbstractionInternal(AbstractCegarLoop.java:487) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:438) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1465) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:658) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:239) ... 49 more [2022-11-03 01:54:23,619 INFO L158 Benchmark]: Toolchain (without parser) took 194538.83ms. Allocated memory was 71.3MB in the beginning and 750.8MB in the end (delta: 679.5MB). Free memory was 50.7MB in the beginning and 504.5MB in the end (delta: -453.8MB). Peak memory consumption was 480.6MB. Max. memory is 16.1GB. [2022-11-03 01:54:23,619 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 71.3MB. Free memory was 51.5MB in the beginning and 51.4MB in the end (delta: 94.4kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 01:54:23,619 INFO L158 Benchmark]: CACSL2BoogieTranslator took 683.86ms. Allocated memory is still 71.3MB. Free memory was 50.5MB in the beginning and 36.4MB in the end (delta: 14.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-03 01:54:23,620 INFO L158 Benchmark]: Boogie Procedure Inliner took 125.91ms. Allocated memory is still 71.3MB. Free memory was 36.0MB in the beginning and 30.6MB in the end (delta: 5.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-03 01:54:23,620 INFO L158 Benchmark]: Boogie Preprocessor took 122.59ms. Allocated memory is still 71.3MB. Free memory was 30.6MB in the beginning and 50.1MB in the end (delta: -19.5MB). Peak memory consumption was 10.3MB. Max. memory is 16.1GB. [2022-11-03 01:54:23,620 INFO L158 Benchmark]: RCFGBuilder took 1206.42ms. Allocated memory was 71.3MB in the beginning and 90.2MB in the end (delta: 18.9MB). Free memory was 50.1MB in the beginning and 62.4MB in the end (delta: -12.3MB). Peak memory consumption was 34.9MB. Max. memory is 16.1GB. [2022-11-03 01:54:23,620 INFO L158 Benchmark]: TraceAbstraction took 192392.85ms. Allocated memory was 90.2MB in the beginning and 750.8MB in the end (delta: 660.6MB). Free memory was 61.2MB in the beginning and 504.5MB in the end (delta: -443.3MB). Peak memory consumption was 471.9MB. Max. memory is 16.1GB. [2022-11-03 01:54:23,622 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 71.3MB. Free memory was 51.5MB in the beginning and 51.4MB in the end (delta: 94.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 683.86ms. Allocated memory is still 71.3MB. Free memory was 50.5MB in the beginning and 36.4MB in the end (delta: 14.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 125.91ms. Allocated memory is still 71.3MB. Free memory was 36.0MB in the beginning and 30.6MB in the end (delta: 5.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 122.59ms. Allocated memory is still 71.3MB. Free memory was 30.6MB in the beginning and 50.1MB in the end (delta: -19.5MB). Peak memory consumption was 10.3MB. Max. memory is 16.1GB. * RCFGBuilder took 1206.42ms. Allocated memory was 71.3MB in the beginning and 90.2MB in the end (delta: 18.9MB). Free memory was 50.1MB in the beginning and 62.4MB in the end (delta: -12.3MB). Peak memory consumption was 34.9MB. Max. memory is 16.1GB. * TraceAbstraction took 192392.85ms. Allocated memory was 90.2MB in the beginning and 750.8MB in the end (delta: 660.6MB). Free memory was 61.2MB in the beginning and 504.5MB in the end (delta: -443.3MB). Peak memory consumption was 471.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:243) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf35ea2-ff74-4c26-ab0c-5b488cc005f6/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory")