./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem02_label52.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f 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_88d64d36-84c2-4d81-bfe1-135604a2f6f2/bin/utaipan-Xvt2sAort0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88d64d36-84c2-4d81-bfe1-135604a2f6f2/bin/utaipan-Xvt2sAort0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88d64d36-84c2-4d81-bfe1-135604a2f6f2/bin/utaipan-Xvt2sAort0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88d64d36-84c2-4d81-bfe1-135604a2f6f2/bin/utaipan-Xvt2sAort0/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem02_label52.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88d64d36-84c2-4d81-bfe1-135604a2f6f2/bin/utaipan-Xvt2sAort0/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88d64d36-84c2-4d81-bfe1-135604a2f6f2/bin/utaipan-Xvt2sAort0 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 154ac9acbf8e778ffeff948005b87fc69e3c98abb9ee270449be2709279a3946 --- 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-e04fb08 [2022-11-16 16:26:55,465 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 16:26:55,467 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 16:26:55,508 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 16:26:55,508 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 16:26:55,509 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 16:26:55,511 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 16:26:55,513 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 16:26:55,515 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 16:26:55,516 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 16:26:55,518 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 16:26:55,530 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 16:26:55,531 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 16:26:55,534 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 16:26:55,535 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 16:26:55,537 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 16:26:55,538 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 16:26:55,539 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 16:26:55,541 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 16:26:55,552 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 16:26:55,557 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 16:26:55,560 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 16:26:55,562 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 16:26:55,563 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 16:26:55,567 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 16:26:55,567 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 16:26:55,568 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 16:26:55,569 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 16:26:55,569 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 16:26:55,570 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 16:26:55,580 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 16:26:55,581 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 16:26:55,583 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 16:26:55,584 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 16:26:55,587 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 16:26:55,587 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 16:26:55,588 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 16:26:55,588 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 16:26:55,588 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 16:26:55,589 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 16:26:55,590 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 16:26:55,591 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88d64d36-84c2-4d81-bfe1-135604a2f6f2/bin/utaipan-Xvt2sAort0/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-16 16:26:55,637 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 16:26:55,638 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 16:26:55,638 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 16:26:55,638 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 16:26:55,639 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 16:26:55,640 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 16:26:55,640 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-16 16:26:55,640 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-16 16:26:55,640 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-16 16:26:55,640 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-16 16:26:55,641 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-16 16:26:55,641 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-16 16:26:55,642 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-16 16:26:55,642 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-16 16:26:55,642 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-16 16:26:55,642 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-16 16:26:55,642 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-16 16:26:55,643 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-16 16:26:55,643 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 16:26:55,643 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 16:26:55,644 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 16:26:55,644 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 16:26:55,644 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 16:26:55,644 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 16:26:55,644 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 16:26:55,644 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 16:26:55,645 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 16:26:55,645 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 16:26:55,645 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 16:26:55,645 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 16:26:55,645 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 16:26:55,646 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 16:26:55,646 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 16:26:55,646 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 16:26:55,646 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-16 16:26:55,647 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 16:26:55,647 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 16:26:55,647 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-16 16:26:55,647 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 16:26:55,647 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 16:26:55,647 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-16 16:26:55,648 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_88d64d36-84c2-4d81-bfe1-135604a2f6f2/bin/utaipan-Xvt2sAort0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88d64d36-84c2-4d81-bfe1-135604a2f6f2/bin/utaipan-Xvt2sAort0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 154ac9acbf8e778ffeff948005b87fc69e3c98abb9ee270449be2709279a3946 [2022-11-16 16:26:55,912 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 16:26:55,951 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 16:26:55,954 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 16:26:55,956 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 16:26:55,957 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 16:26:55,958 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88d64d36-84c2-4d81-bfe1-135604a2f6f2/bin/utaipan-Xvt2sAort0/../../sv-benchmarks/c/eca-rers2012/Problem02_label52.c [2022-11-16 16:26:56,025 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88d64d36-84c2-4d81-bfe1-135604a2f6f2/bin/utaipan-Xvt2sAort0/data/9c9760233/41d9e9b0cbd44da6be2596b76652b0c4/FLAG881e3f282 [2022-11-16 16:26:56,775 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 16:26:56,776 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88d64d36-84c2-4d81-bfe1-135604a2f6f2/sv-benchmarks/c/eca-rers2012/Problem02_label52.c [2022-11-16 16:26:56,787 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88d64d36-84c2-4d81-bfe1-135604a2f6f2/bin/utaipan-Xvt2sAort0/data/9c9760233/41d9e9b0cbd44da6be2596b76652b0c4/FLAG881e3f282 [2022-11-16 16:26:57,008 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88d64d36-84c2-4d81-bfe1-135604a2f6f2/bin/utaipan-Xvt2sAort0/data/9c9760233/41d9e9b0cbd44da6be2596b76652b0c4 [2022-11-16 16:26:57,011 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 16:26:57,012 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 16:26:57,014 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 16:26:57,014 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 16:26:57,021 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 16:26:57,022 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 04:26:57" (1/1) ... [2022-11-16 16:26:57,024 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f08d97f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:26:57, skipping insertion in model container [2022-11-16 16:26:57,024 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 04:26:57" (1/1) ... [2022-11-16 16:26:57,032 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 16:26:57,074 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 16:26:57,445 WARN L229 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_88d64d36-84c2-4d81-bfe1-135604a2f6f2/sv-benchmarks/c/eca-rers2012/Problem02_label52.c[17244,17257] [2022-11-16 16:26:57,479 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 16:26:57,489 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 16:26:57,576 WARN L229 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_88d64d36-84c2-4d81-bfe1-135604a2f6f2/sv-benchmarks/c/eca-rers2012/Problem02_label52.c[17244,17257] [2022-11-16 16:26:57,590 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 16:26:57,608 INFO L208 MainTranslator]: Completed translation [2022-11-16 16:26:57,609 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:26:57 WrapperNode [2022-11-16 16:26:57,609 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 16:26:57,610 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 16:26:57,611 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 16:26:57,611 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 16:26:57,634 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:26:57" (1/1) ... [2022-11-16 16:26:57,657 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:26:57" (1/1) ... [2022-11-16 16:26:57,718 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 668 [2022-11-16 16:26:57,719 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 16:26:57,720 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 16:26:57,720 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 16:26:57,720 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 16:26:57,732 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:26:57" (1/1) ... [2022-11-16 16:26:57,732 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:26:57" (1/1) ... [2022-11-16 16:26:57,736 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:26:57" (1/1) ... [2022-11-16 16:26:57,737 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:26:57" (1/1) ... [2022-11-16 16:26:57,758 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:26:57" (1/1) ... [2022-11-16 16:26:57,767 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:26:57" (1/1) ... [2022-11-16 16:26:57,771 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:26:57" (1/1) ... [2022-11-16 16:26:57,775 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:26:57" (1/1) ... [2022-11-16 16:26:57,782 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 16:26:57,784 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 16:26:57,784 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 16:26:57,784 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 16:26:57,785 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:26:57" (1/1) ... [2022-11-16 16:26:57,793 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 16:26:57,811 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88d64d36-84c2-4d81-bfe1-135604a2f6f2/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 16:26:57,843 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88d64d36-84c2-4d81-bfe1-135604a2f6f2/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 16:26:57,871 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88d64d36-84c2-4d81-bfe1-135604a2f6f2/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 16:26:57,895 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 16:26:57,896 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 16:26:57,896 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 16:26:57,896 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 16:26:58,041 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 16:26:58,044 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 16:26:59,313 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 16:26:59,636 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 16:26:59,636 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-16 16:26:59,644 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 04:26:59 BoogieIcfgContainer [2022-11-16 16:26:59,644 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 16:26:59,649 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 16:26:59,650 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 16:26:59,654 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 16:26:59,655 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 04:26:57" (1/3) ... [2022-11-16 16:26:59,656 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@797bb6a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 04:26:59, skipping insertion in model container [2022-11-16 16:26:59,656 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:26:57" (2/3) ... [2022-11-16 16:26:59,656 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@797bb6a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 04:26:59, skipping insertion in model container [2022-11-16 16:26:59,657 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 04:26:59" (3/3) ... [2022-11-16 16:26:59,658 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem02_label52.c [2022-11-16 16:26:59,681 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 16:26:59,681 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 16:26:59,757 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 16:26:59,769 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;@db242fa, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 16:26:59,769 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-16 16:26:59,775 INFO L276 IsEmpty]: Start isEmpty. Operand has 85 states, 83 states have (on average 1.9518072289156627) internal successors, (162), 84 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 16:26:59,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-16 16:26:59,786 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:26:59,787 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:26:59,787 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 16:26:59,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:26:59,794 INFO L85 PathProgramCache]: Analyzing trace with hash 1814574548, now seen corresponding path program 1 times [2022-11-16 16:26:59,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:26:59,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100976154] [2022-11-16 16:26:59,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:26:59,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:27:00,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:27:00,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 16:27:00,354 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:27:00,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100976154] [2022-11-16 16:27:00,355 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100976154] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:27:00,355 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:27:00,355 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 16:27:00,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212384022] [2022-11-16 16:27:00,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:27:00,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 16:27:00,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:27:00,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 16:27:00,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 16:27:00,416 INFO L87 Difference]: Start difference. First operand has 85 states, 83 states have (on average 1.9518072289156627) internal successors, (162), 84 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 16:27:01,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:27:01,078 INFO L93 Difference]: Finished difference Result 251 states and 482 transitions. [2022-11-16 16:27:01,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 16:27:01,081 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2022-11-16 16:27:01,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:27:01,098 INFO L225 Difference]: With dead ends: 251 [2022-11-16 16:27:01,098 INFO L226 Difference]: Without dead ends: 163 [2022-11-16 16:27:01,102 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 16:27:01,109 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 5 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-16 16:27:01,113 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 65 Invalid, 320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-16 16:27:01,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2022-11-16 16:27:01,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2022-11-16 16:27:01,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 162 states have (on average 1.5617283950617284) internal successors, (253), 162 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 16:27:01,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 253 transitions. [2022-11-16 16:27:01,202 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 253 transitions. Word has length 80 [2022-11-16 16:27:01,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:27:01,205 INFO L495 AbstractCegarLoop]: Abstraction has 163 states and 253 transitions. [2022-11-16 16:27:01,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 16:27:01,206 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 253 transitions. [2022-11-16 16:27:01,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-11-16 16:27:01,209 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:27:01,209 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:27:01,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 16:27:01,210 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 16:27:01,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:27:01,211 INFO L85 PathProgramCache]: Analyzing trace with hash -483706377, now seen corresponding path program 1 times [2022-11-16 16:27:01,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:27:01,211 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446823920] [2022-11-16 16:27:01,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:27:01,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:27:01,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:27:01,444 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 16:27:01,445 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:27:01,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446823920] [2022-11-16 16:27:01,445 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446823920] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:27:01,445 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:27:01,446 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 16:27:01,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506435129] [2022-11-16 16:27:01,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:27:01,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 16:27:01,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:27:01,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 16:27:01,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 16:27:01,449 INFO L87 Difference]: Start difference. First operand 163 states and 253 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 16:27:01,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:27:01,992 INFO L93 Difference]: Finished difference Result 405 states and 661 transitions. [2022-11-16 16:27:01,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 16:27:01,993 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2022-11-16 16:27:01,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:27:01,998 INFO L225 Difference]: With dead ends: 405 [2022-11-16 16:27:01,998 INFO L226 Difference]: Without dead ends: 243 [2022-11-16 16:27:01,999 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 16:27:02,000 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 11 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-16 16:27:02,001 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 130 Invalid, 322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-16 16:27:02,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2022-11-16 16:27:02,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 243. [2022-11-16 16:27:02,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 242 states have (on average 1.4793388429752066) internal successors, (358), 242 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 16:27:02,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 358 transitions. [2022-11-16 16:27:02,026 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 358 transitions. Word has length 85 [2022-11-16 16:27:02,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:27:02,026 INFO L495 AbstractCegarLoop]: Abstraction has 243 states and 358 transitions. [2022-11-16 16:27:02,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 16:27:02,027 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 358 transitions. [2022-11-16 16:27:02,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-11-16 16:27:02,030 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:27:02,030 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:27:02,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 16:27:02,036 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 16:27:02,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:27:02,048 INFO L85 PathProgramCache]: Analyzing trace with hash 1049111344, now seen corresponding path program 1 times [2022-11-16 16:27:02,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:27:02,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808841514] [2022-11-16 16:27:02,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:27:02,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:27:02,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:27:02,188 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 16:27:02,188 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:27:02,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808841514] [2022-11-16 16:27:02,189 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808841514] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:27:02,189 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:27:02,189 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 16:27:02,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633033511] [2022-11-16 16:27:02,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:27:02,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 16:27:02,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:27:02,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 16:27:02,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 16:27:02,192 INFO L87 Difference]: Start difference. First operand 243 states and 358 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 2 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 16:27:02,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:27:02,650 INFO L93 Difference]: Finished difference Result 725 states and 1071 transitions. [2022-11-16 16:27:02,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 16:27:02,651 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 2 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2022-11-16 16:27:02,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:27:02,654 INFO L225 Difference]: With dead ends: 725 [2022-11-16 16:27:02,654 INFO L226 Difference]: Without dead ends: 483 [2022-11-16 16:27:02,655 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 16:27:02,656 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 104 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 16:27:02,657 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 30 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-16 16:27:02,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2022-11-16 16:27:02,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 483. [2022-11-16 16:27:02,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 483 states, 482 states have (on average 1.396265560165975) internal successors, (673), 482 states have internal predecessors, (673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 16:27:02,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 673 transitions. [2022-11-16 16:27:02,684 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 673 transitions. Word has length 95 [2022-11-16 16:27:02,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:27:02,685 INFO L495 AbstractCegarLoop]: Abstraction has 483 states and 673 transitions. [2022-11-16 16:27:02,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 2 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 16:27:02,685 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 673 transitions. [2022-11-16 16:27:02,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-11-16 16:27:02,692 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:27:02,692 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:27:02,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 16:27:02,693 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 16:27:02,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:27:02,694 INFO L85 PathProgramCache]: Analyzing trace with hash -1996723009, now seen corresponding path program 1 times [2022-11-16 16:27:02,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:27:02,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456278030] [2022-11-16 16:27:02,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:27:02,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:27:02,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:27:02,977 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-16 16:27:02,977 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:27:02,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456278030] [2022-11-16 16:27:02,977 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456278030] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:27:02,978 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:27:02,978 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 16:27:02,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979261115] [2022-11-16 16:27:02,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:27:02,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 16:27:02,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:27:02,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 16:27:02,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 16:27:02,980 INFO L87 Difference]: Start difference. First operand 483 states and 673 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 16:27:03,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:27:03,367 INFO L93 Difference]: Finished difference Result 1125 states and 1545 transitions. [2022-11-16 16:27:03,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 16:27:03,367 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2022-11-16 16:27:03,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:27:03,370 INFO L225 Difference]: With dead ends: 1125 [2022-11-16 16:27:03,370 INFO L226 Difference]: Without dead ends: 563 [2022-11-16 16:27:03,371 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 16:27:03,372 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 76 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 16:27:03,373 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 23 Invalid, 299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-16 16:27:03,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2022-11-16 16:27:03,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 563. [2022-11-16 16:27:03,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 563 states, 562 states have (on average 1.2384341637010676) internal successors, (696), 562 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 16:27:03,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 696 transitions. [2022-11-16 16:27:03,397 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 696 transitions. Word has length 124 [2022-11-16 16:27:03,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:27:03,398 INFO L495 AbstractCegarLoop]: Abstraction has 563 states and 696 transitions. [2022-11-16 16:27:03,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 16:27:03,399 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 696 transitions. [2022-11-16 16:27:03,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-11-16 16:27:03,402 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:27:03,402 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:27:03,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 16:27:03,402 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 16:27:03,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:27:03,403 INFO L85 PathProgramCache]: Analyzing trace with hash -1690312779, now seen corresponding path program 1 times [2022-11-16 16:27:03,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:27:03,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233473681] [2022-11-16 16:27:03,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:27:03,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:27:03,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:27:03,567 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-16 16:27:03,567 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:27:03,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233473681] [2022-11-16 16:27:03,570 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233473681] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:27:03,570 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:27:03,571 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 16:27:03,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517472711] [2022-11-16 16:27:03,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:27:03,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 16:27:03,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:27:03,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 16:27:03,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 16:27:03,573 INFO L87 Difference]: Start difference. First operand 563 states and 696 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 16:27:04,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:27:04,026 INFO L93 Difference]: Finished difference Result 1605 states and 1990 transitions. [2022-11-16 16:27:04,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 16:27:04,027 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 128 [2022-11-16 16:27:04,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:27:04,031 INFO L225 Difference]: With dead ends: 1605 [2022-11-16 16:27:04,032 INFO L226 Difference]: Without dead ends: 1043 [2022-11-16 16:27:04,033 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 16:27:04,034 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 62 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 16:27:04,034 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 145 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-16 16:27:04,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1043 states. [2022-11-16 16:27:04,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1043 to 963. [2022-11-16 16:27:04,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 963 states, 962 states have (on average 1.208939708939709) internal successors, (1163), 962 states have internal predecessors, (1163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 16:27:04,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 963 states to 963 states and 1163 transitions. [2022-11-16 16:27:04,081 INFO L78 Accepts]: Start accepts. Automaton has 963 states and 1163 transitions. Word has length 128 [2022-11-16 16:27:04,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:27:04,082 INFO L495 AbstractCegarLoop]: Abstraction has 963 states and 1163 transitions. [2022-11-16 16:27:04,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 16:27:04,082 INFO L276 IsEmpty]: Start isEmpty. Operand 963 states and 1163 transitions. [2022-11-16 16:27:04,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-11-16 16:27:04,085 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:27:04,085 INFO L195 NwaCegarLoop]: trace histogram [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, 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] [2022-11-16 16:27:04,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 16:27:04,085 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 16:27:04,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:27:04,086 INFO L85 PathProgramCache]: Analyzing trace with hash 824689667, now seen corresponding path program 1 times [2022-11-16 16:27:04,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:27:04,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522760131] [2022-11-16 16:27:04,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:27:04,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:27:04,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:27:04,361 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 16:27:04,361 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:27:04,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522760131] [2022-11-16 16:27:04,361 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522760131] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:27:04,362 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:27:04,362 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 16:27:04,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645745888] [2022-11-16 16:27:04,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:27:04,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 16:27:04,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:27:04,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 16:27:04,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 16:27:04,366 INFO L87 Difference]: Start difference. First operand 963 states and 1163 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 16:27:04,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:27:04,769 INFO L93 Difference]: Finished difference Result 2725 states and 3302 transitions. [2022-11-16 16:27:04,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 16:27:04,770 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 132 [2022-11-16 16:27:04,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:27:04,779 INFO L225 Difference]: With dead ends: 2725 [2022-11-16 16:27:04,779 INFO L226 Difference]: Without dead ends: 1683 [2022-11-16 16:27:04,781 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 16:27:04,786 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 58 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 16:27:04,789 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 29 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-16 16:27:04,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1683 states. [2022-11-16 16:27:04,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1683 to 1603. [2022-11-16 16:27:04,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1603 states, 1602 states have (on average 1.184769038701623) internal successors, (1898), 1602 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 16:27:04,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1603 states to 1603 states and 1898 transitions. [2022-11-16 16:27:04,831 INFO L78 Accepts]: Start accepts. Automaton has 1603 states and 1898 transitions. Word has length 132 [2022-11-16 16:27:04,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:27:04,832 INFO L495 AbstractCegarLoop]: Abstraction has 1603 states and 1898 transitions. [2022-11-16 16:27:04,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 16:27:04,833 INFO L276 IsEmpty]: Start isEmpty. Operand 1603 states and 1898 transitions. [2022-11-16 16:27:04,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2022-11-16 16:27:04,840 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:27:04,840 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:27:04,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 16:27:04,841 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 16:27:04,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:27:04,841 INFO L85 PathProgramCache]: Analyzing trace with hash 835672525, now seen corresponding path program 1 times [2022-11-16 16:27:04,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:27:04,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310293644] [2022-11-16 16:27:04,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:27:04,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:27:04,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:27:05,081 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 138 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-11-16 16:27:05,081 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:27:05,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310293644] [2022-11-16 16:27:05,083 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310293644] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:27:05,083 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:27:05,084 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 16:27:05,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602955353] [2022-11-16 16:27:05,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:27:05,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 16:27:05,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:27:05,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 16:27:05,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 16:27:05,089 INFO L87 Difference]: Start difference. First operand 1603 states and 1898 transitions. Second operand has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 16:27:05,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:27:05,517 INFO L93 Difference]: Finished difference Result 3605 states and 4269 transitions. [2022-11-16 16:27:05,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 16:27:05,519 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 170 [2022-11-16 16:27:05,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:27:05,526 INFO L225 Difference]: With dead ends: 3605 [2022-11-16 16:27:05,527 INFO L226 Difference]: Without dead ends: 1843 [2022-11-16 16:27:05,529 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 16:27:05,536 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 39 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 16:27:05,537 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 122 Invalid, 274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-16 16:27:05,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1843 states. [2022-11-16 16:27:05,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1843 to 1603. [2022-11-16 16:27:05,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1603 states, 1602 states have (on average 1.1716604244694133) internal successors, (1877), 1602 states have internal predecessors, (1877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 16:27:05,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1603 states to 1603 states and 1877 transitions. [2022-11-16 16:27:05,584 INFO L78 Accepts]: Start accepts. Automaton has 1603 states and 1877 transitions. Word has length 170 [2022-11-16 16:27:05,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:27:05,584 INFO L495 AbstractCegarLoop]: Abstraction has 1603 states and 1877 transitions. [2022-11-16 16:27:05,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 16:27:05,585 INFO L276 IsEmpty]: Start isEmpty. Operand 1603 states and 1877 transitions. [2022-11-16 16:27:05,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2022-11-16 16:27:05,591 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:27:05,591 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:27:05,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 16:27:05,592 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 16:27:05,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:27:05,592 INFO L85 PathProgramCache]: Analyzing trace with hash 982755294, now seen corresponding path program 1 times [2022-11-16 16:27:05,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:27:05,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447096467] [2022-11-16 16:27:05,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:27:05,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:27:05,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:27:05,987 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 159 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2022-11-16 16:27:05,987 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:27:05,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447096467] [2022-11-16 16:27:05,987 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447096467] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:27:05,987 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:27:05,988 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 16:27:05,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058258391] [2022-11-16 16:27:05,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:27:05,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 16:27:05,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:27:05,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 16:27:05,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 16:27:05,990 INFO L87 Difference]: Start difference. First operand 1603 states and 1877 transitions. Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 16:27:06,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:27:06,383 INFO L93 Difference]: Finished difference Result 3765 states and 4460 transitions. [2022-11-16 16:27:06,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 16:27:06,384 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 196 [2022-11-16 16:27:06,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:27:06,392 INFO L225 Difference]: With dead ends: 3765 [2022-11-16 16:27:06,392 INFO L226 Difference]: Without dead ends: 2163 [2022-11-16 16:27:06,394 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 16:27:06,395 INFO L413 NwaCegarLoop]: 101 mSDtfsCounter, 73 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 16:27:06,395 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 105 Invalid, 275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 221 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 16:27:06,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2163 states. [2022-11-16 16:27:06,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2163 to 2083. [2022-11-16 16:27:06,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2083 states, 2082 states have (on average 1.159462055715658) internal successors, (2414), 2082 states have internal predecessors, (2414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 16:27:06,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2083 states to 2083 states and 2414 transitions. [2022-11-16 16:27:06,447 INFO L78 Accepts]: Start accepts. Automaton has 2083 states and 2414 transitions. Word has length 196 [2022-11-16 16:27:06,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:27:06,447 INFO L495 AbstractCegarLoop]: Abstraction has 2083 states and 2414 transitions. [2022-11-16 16:27:06,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 16:27:06,448 INFO L276 IsEmpty]: Start isEmpty. Operand 2083 states and 2414 transitions. [2022-11-16 16:27:06,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2022-11-16 16:27:06,453 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:27:06,453 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:27:06,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 16:27:06,454 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 16:27:06,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:27:06,454 INFO L85 PathProgramCache]: Analyzing trace with hash 762432280, now seen corresponding path program 1 times [2022-11-16 16:27:06,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:27:06,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089697903] [2022-11-16 16:27:06,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:27:06,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:27:06,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:27:06,657 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 130 proven. 0 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2022-11-16 16:27:06,658 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:27:06,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089697903] [2022-11-16 16:27:06,658 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089697903] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:27:06,658 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:27:06,658 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 16:27:06,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290909204] [2022-11-16 16:27:06,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:27:06,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 16:27:06,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:27:06,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 16:27:06,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 16:27:06,660 INFO L87 Difference]: Start difference. First operand 2083 states and 2414 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 2 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 16:27:06,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:27:06,847 INFO L93 Difference]: Finished difference Result 3605 states and 4185 transitions. [2022-11-16 16:27:06,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 16:27:06,849 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 2 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 202 [2022-11-16 16:27:06,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:27:06,853 INFO L225 Difference]: With dead ends: 3605 [2022-11-16 16:27:06,853 INFO L226 Difference]: Without dead ends: 1123 [2022-11-16 16:27:06,855 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 16:27:06,856 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 83 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 16:27:06,857 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 4 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 16:27:06,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1123 states. [2022-11-16 16:27:06,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1123 to 1123. [2022-11-16 16:27:06,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1123 states, 1122 states have (on average 1.085561497326203) internal successors, (1218), 1122 states have internal predecessors, (1218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 16:27:06,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1123 states to 1123 states and 1218 transitions. [2022-11-16 16:27:06,883 INFO L78 Accepts]: Start accepts. Automaton has 1123 states and 1218 transitions. Word has length 202 [2022-11-16 16:27:06,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:27:06,884 INFO L495 AbstractCegarLoop]: Abstraction has 1123 states and 1218 transitions. [2022-11-16 16:27:06,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 2 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 16:27:06,884 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states and 1218 transitions. [2022-11-16 16:27:06,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2022-11-16 16:27:06,888 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:27:06,889 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-16 16:27:06,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-16 16:27:06,889 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 16:27:06,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:27:06,890 INFO L85 PathProgramCache]: Analyzing trace with hash 1137063669, now seen corresponding path program 1 times [2022-11-16 16:27:06,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:27:06,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421909187] [2022-11-16 16:27:06,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:27:06,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:27:06,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:27:07,326 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 286 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-16 16:27:07,327 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:27:07,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421909187] [2022-11-16 16:27:07,327 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421909187] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:27:07,327 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:27:07,328 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 16:27:07,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314605036] [2022-11-16 16:27:07,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:27:07,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 16:27:07,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:27:07,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 16:27:07,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 16:27:07,330 INFO L87 Difference]: Start difference. First operand 1123 states and 1218 transitions. Second operand has 4 states, 4 states have (on average 53.5) internal successors, (214), 4 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 16:27:07,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:27:07,576 INFO L93 Difference]: Finished difference Result 2165 states and 2353 transitions. [2022-11-16 16:27:07,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 16:27:07,577 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 53.5) internal successors, (214), 4 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 228 [2022-11-16 16:27:07,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:27:07,580 INFO L225 Difference]: With dead ends: 2165 [2022-11-16 16:27:07,580 INFO L226 Difference]: Without dead ends: 803 [2022-11-16 16:27:07,581 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 16:27:07,582 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 92 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 16:27:07,583 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 107 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 16:27:07,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 803 states. [2022-11-16 16:27:07,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 803 to 803. [2022-11-16 16:27:07,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 803 states, 802 states have (on average 1.071072319201995) internal successors, (859), 802 states have internal predecessors, (859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 16:27:07,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 859 transitions. [2022-11-16 16:27:07,603 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 859 transitions. Word has length 228 [2022-11-16 16:27:07,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:27:07,603 INFO L495 AbstractCegarLoop]: Abstraction has 803 states and 859 transitions. [2022-11-16 16:27:07,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 53.5) internal successors, (214), 4 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 16:27:07,604 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 859 transitions. [2022-11-16 16:27:07,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2022-11-16 16:27:07,608 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:27:07,608 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:27:07,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-16 16:27:07,613 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 16:27:07,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:27:07,614 INFO L85 PathProgramCache]: Analyzing trace with hash 1763949946, now seen corresponding path program 1 times [2022-11-16 16:27:07,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:27:07,614 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140298554] [2022-11-16 16:27:07,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:27:07,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:27:07,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:27:08,808 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 197 proven. 197 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-11-16 16:27:08,808 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:27:08,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140298554] [2022-11-16 16:27:08,808 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140298554] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 16:27:08,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [846535338] [2022-11-16 16:27:08,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:27:08,809 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 16:27:08,809 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88d64d36-84c2-4d81-bfe1-135604a2f6f2/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 16:27:08,815 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88d64d36-84c2-4d81-bfe1-135604a2f6f2/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 16:27:08,842 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88d64d36-84c2-4d81-bfe1-135604a2f6f2/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 16:27:09,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:27:09,041 INFO L263 TraceCheckSpWp]: Trace formula consists of 492 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-16 16:27:09,068 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:27:11,022 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 311 proven. 114 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-16 16:27:11,022 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 16:27:12,514 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 242 proven. 183 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-16 16:27:12,515 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [846535338] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 16:27:12,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [763507553] [2022-11-16 16:27:12,544 INFO L159 IcfgInterpreter]: Started Sifa with 82 locations of interest [2022-11-16 16:27:12,544 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 16:27:12,549 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 16:27:12,554 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 16:27:12,555 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 16:29:19,741 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 25 [2022-11-16 16:29:19,911 WARN L176 XnfTransformerHelper]: Simplifying disjunction of 12432 conjuctions. This might take some time... [2022-11-16 16:29:20,626 INFO L192 XnfTransformerHelper]: Simplified to disjunction of 584 conjuctions. [2022-11-16 16:29:20,637 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 25 [2022-11-16 16:29:20,785 WARN L176 XnfTransformerHelper]: Simplifying disjunction of 12432 conjuctions. This might take some time... [2022-11-16 16:29:21,481 INFO L192 XnfTransformerHelper]: Simplified to disjunction of 584 conjuctions. [2022-11-16 16:29:21,655 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 25 [2022-11-16 16:29:21,803 WARN L176 XnfTransformerHelper]: Simplifying disjunction of 12432 conjuctions. This might take some time... [2022-11-16 16:29:22,596 INFO L192 XnfTransformerHelper]: Simplified to disjunction of 584 conjuctions. [2022-11-16 16:29:23,156 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 16:29:43,851 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '32143#(and (<= 26 ~z~0) (<= 5 ~e~0) (<= 25 ~y~0) (<= ~c~0 3) (<= ~e~0 5) (<= 6 ~f~0) (<= 0 |#NULL.base|) (= ~a17~0 8) (<= ~w~0 23) (<= ~u~0 21) (<= 1 |ULTIMATE.start_calculate_output_~input#1|) (<= ~x~0 24) (<= 3 ~c~0) (<= |#NULL.offset| 0) (<= ~v~0 22) (<= 1 |ULTIMATE.start_main_~input~0#1|) (= ~a11~0 1) (<= ~a~0 1) (<= 4 ~d~0) (not (= ~a19~0 1)) (<= 23 ~w~0) (<= ~z~0 26) (= ~a21~0 1) (<= 21 ~u~0) (<= 1 |ULTIMATE.start_calculate_output_#in~input#1|) (<= |#NULL.base| 0) (<= ~y~0 25) (not (= ~a25~0 1)) (<= 1 ~a~0) (<= 22 ~v~0) (= ~a28~0 8) (<= 0 |#NULL.offset|) (<= ~d~0 4) (<= 0 |#StackHeapBarrier|) (<= ~f~0 6) (<= 0 ~a25~0) (<= 24 ~x~0))' at error location [2022-11-16 16:29:43,852 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-16 16:29:43,852 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 16:29:43,852 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2022-11-16 16:29:43,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710882103] [2022-11-16 16:29:43,852 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 16:29:43,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-16 16:29:43,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:29:43,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-16 16:29:43,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=486, Unknown=0, NotChecked=0, Total=600 [2022-11-16 16:29:43,855 INFO L87 Difference]: Start difference. First operand 803 states and 859 transitions. Second operand has 15 states, 15 states have (on average 36.0) internal successors, (540), 14 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 16:29:44,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:29:44,958 INFO L93 Difference]: Finished difference Result 1046 states and 1120 transitions. [2022-11-16 16:29:44,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 16:29:44,959 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 36.0) internal successors, (540), 14 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 278 [2022-11-16 16:29:44,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:29:44,960 INFO L225 Difference]: With dead ends: 1046 [2022-11-16 16:29:44,960 INFO L226 Difference]: Without dead ends: 0 [2022-11-16 16:29:44,961 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 845 GetRequests, 594 SyntacticMatches, 223 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3649 ImplicationChecksByTransitivity, 21.0s TimeCoverageRelationStatistics Valid=164, Invalid=706, Unknown=0, NotChecked=0, Total=870 [2022-11-16 16:29:44,962 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 353 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 1230 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 353 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 1256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-16 16:29:44,962 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [353 Valid, 51 Invalid, 1256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 1230 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-16 16:29:44,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-16 16:29:44,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-16 16:29:44,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 16:29:44,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-16 16:29:44,963 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 278 [2022-11-16 16:29:44,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:29:44,963 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-16 16:29:44,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 36.0) internal successors, (540), 14 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 16:29:44,964 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-16 16:29:44,964 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-16 16:29:44,967 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-16 16:29:44,981 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88d64d36-84c2-4d81-bfe1-135604a2f6f2/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 16:29:45,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88d64d36-84c2-4d81-bfe1-135604a2f6f2/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-16 16:29:45,170 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-16 16:29:45,931 INFO L899 garLoopResultBuilder]: For program point L301(lines 301 423) no Hoare annotation was computed. [2022-11-16 16:29:45,931 INFO L899 garLoopResultBuilder]: For program point L235(lines 235 423) no Hoare annotation was computed. [2022-11-16 16:29:45,931 INFO L899 garLoopResultBuilder]: For program point L169(lines 169 423) no Hoare annotation was computed. [2022-11-16 16:29:45,931 INFO L899 garLoopResultBuilder]: For program point L303(lines 303 423) no Hoare annotation was computed. [2022-11-16 16:29:45,931 INFO L899 garLoopResultBuilder]: For program point L105(lines 105 423) no Hoare annotation was computed. [2022-11-16 16:29:45,931 INFO L899 garLoopResultBuilder]: For program point L40(lines 40 423) no Hoare annotation was computed. [2022-11-16 16:29:45,931 INFO L899 garLoopResultBuilder]: For program point L371(lines 371 423) no Hoare annotation was computed. [2022-11-16 16:29:45,932 INFO L899 garLoopResultBuilder]: For program point L307(lines 307 423) no Hoare annotation was computed. [2022-11-16 16:29:45,932 INFO L899 garLoopResultBuilder]: For program point L175(lines 175 423) no Hoare annotation was computed. [2022-11-16 16:29:45,932 INFO L899 garLoopResultBuilder]: For program point L109(lines 109 423) no Hoare annotation was computed. [2022-11-16 16:29:45,932 INFO L899 garLoopResultBuilder]: For program point L242(lines 242 423) no Hoare annotation was computed. [2022-11-16 16:29:45,932 INFO L899 garLoopResultBuilder]: For program point L45(lines 45 423) no Hoare annotation was computed. [2022-11-16 16:29:45,932 INFO L899 garLoopResultBuilder]: For program point L244(lines 244 423) no Hoare annotation was computed. [2022-11-16 16:29:45,932 INFO L899 garLoopResultBuilder]: For program point L179(lines 179 423) no Hoare annotation was computed. [2022-11-16 16:29:45,933 INFO L899 garLoopResultBuilder]: For program point L378(lines 378 423) no Hoare annotation was computed. [2022-11-16 16:29:45,933 INFO L899 garLoopResultBuilder]: For program point L48(lines 48 423) no Hoare annotation was computed. [2022-11-16 16:29:45,933 INFO L899 garLoopResultBuilder]: For program point L247(lines 247 423) no Hoare annotation was computed. [2022-11-16 16:29:45,933 INFO L899 garLoopResultBuilder]: For program point L116(lines 116 423) no Hoare annotation was computed. [2022-11-16 16:29:45,933 INFO L899 garLoopResultBuilder]: For program point L52(lines 52 423) no Hoare annotation was computed. [2022-11-16 16:29:45,933 INFO L899 garLoopResultBuilder]: For program point L185(lines 185 423) no Hoare annotation was computed. [2022-11-16 16:29:45,933 INFO L899 garLoopResultBuilder]: For program point L385(lines 385 423) no Hoare annotation was computed. [2022-11-16 16:29:45,934 INFO L899 garLoopResultBuilder]: For program point L319(lines 319 423) no Hoare annotation was computed. [2022-11-16 16:29:45,934 INFO L899 garLoopResultBuilder]: For program point L189(lines 189 423) no Hoare annotation was computed. [2022-11-16 16:29:45,934 INFO L899 garLoopResultBuilder]: For program point L123(lines 123 423) no Hoare annotation was computed. [2022-11-16 16:29:45,934 INFO L899 garLoopResultBuilder]: For program point L57(lines 57 423) no Hoare annotation was computed. [2022-11-16 16:29:45,934 INFO L899 garLoopResultBuilder]: For program point L388(lines 388 423) no Hoare annotation was computed. [2022-11-16 16:29:45,934 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-16 16:29:45,934 INFO L899 garLoopResultBuilder]: For program point L390(lines 390 423) no Hoare annotation was computed. [2022-11-16 16:29:45,935 INFO L899 garLoopResultBuilder]: For program point L324(lines 324 423) no Hoare annotation was computed. [2022-11-16 16:29:45,935 INFO L899 garLoopResultBuilder]: For program point L258(lines 258 423) no Hoare annotation was computed. [2022-11-16 16:29:45,935 INFO L899 garLoopResultBuilder]: For program point L60(lines 60 423) no Hoare annotation was computed. [2022-11-16 16:29:45,935 INFO L899 garLoopResultBuilder]: For program point L195(lines 195 423) no Hoare annotation was computed. [2022-11-16 16:29:45,935 INFO L899 garLoopResultBuilder]: For program point L129(lines 129 423) no Hoare annotation was computed. [2022-11-16 16:29:45,935 INFO L899 garLoopResultBuilder]: For program point L64(lines 64 423) no Hoare annotation was computed. [2022-11-16 16:29:45,935 INFO L899 garLoopResultBuilder]: For program point L263(lines 263 423) no Hoare annotation was computed. [2022-11-16 16:29:45,936 INFO L899 garLoopResultBuilder]: For program point L197(lines 197 423) no Hoare annotation was computed. [2022-11-16 16:29:45,936 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 494) no Hoare annotation was computed. [2022-11-16 16:29:45,936 INFO L899 garLoopResultBuilder]: For program point L199(lines 199 423) no Hoare annotation was computed. [2022-11-16 16:29:45,936 INFO L899 garLoopResultBuilder]: For program point L133(lines 133 423) no Hoare annotation was computed. [2022-11-16 16:29:45,936 INFO L899 garLoopResultBuilder]: For program point L399(lines 399 423) no Hoare annotation was computed. [2022-11-16 16:29:45,936 INFO L899 garLoopResultBuilder]: For program point L201(lines 201 423) no Hoare annotation was computed. [2022-11-16 16:29:45,936 INFO L899 garLoopResultBuilder]: For program point L69(lines 69 423) no Hoare annotation was computed. [2022-11-16 16:29:45,937 INFO L899 garLoopResultBuilder]: For program point L269(lines 269 423) no Hoare annotation was computed. [2022-11-16 16:29:45,937 INFO L899 garLoopResultBuilder]: For program point L204(lines 204 423) no Hoare annotation was computed. [2022-11-16 16:29:45,937 INFO L899 garLoopResultBuilder]: For program point L271(lines 271 423) no Hoare annotation was computed. [2022-11-16 16:29:45,937 INFO L899 garLoopResultBuilder]: For program point L404(lines 404 423) no Hoare annotation was computed. [2022-11-16 16:29:45,937 INFO L899 garLoopResultBuilder]: For program point L338(lines 338 423) no Hoare annotation was computed. [2022-11-16 16:29:45,937 INFO L899 garLoopResultBuilder]: For program point L140(lines 140 423) no Hoare annotation was computed. [2022-11-16 16:29:45,937 INFO L899 garLoopResultBuilder]: For program point L75(lines 75 423) no Hoare annotation was computed. [2022-11-16 16:29:45,937 INFO L899 garLoopResultBuilder]: For program point L208(lines 208 423) no Hoare annotation was computed. [2022-11-16 16:29:45,937 INFO L899 garLoopResultBuilder]: For program point L341(lines 341 423) no Hoare annotation was computed. [2022-11-16 16:29:45,937 INFO L899 garLoopResultBuilder]: For program point L408(lines 408 423) no Hoare annotation was computed. [2022-11-16 16:29:45,938 INFO L899 garLoopResultBuilder]: For program point L144(lines 144 423) no Hoare annotation was computed. [2022-11-16 16:29:45,938 INFO L895 garLoopResultBuilder]: At program point L607(lines 39 608) the Hoare annotation is: (let ((.cse3 (<= 9 ~a28~0)) (.cse7 (= ~a17~0 8)) (.cse8 (= ~a21~0 1)) (.cse10 (= ~a11~0 ~a19~0)) (.cse9 (= ~a11~0 0)) (.cse2 (= ~a19~0 1)) (.cse0 (<= 10 ~a28~0)) (.cse4 (= ~a25~0 1)) (.cse5 (<= ~a28~0 10)) (.cse1 (= ~a11~0 1)) (.cse6 (<= ~a17~0 8)) (.cse11 (<= ~a28~0 7))) (or (and .cse0 .cse1 .cse2) (and (or (and .cse3 .cse1 .cse2) (and .cse3 .cse4 .cse1 .cse5)) .cse6) (and .cse0 .cse5 .cse2) (and .cse7 .cse3 .cse8 .cse9 .cse5 .cse2) (and .cse7 .cse8 .cse10 .cse9 .cse11) (and .cse4 .cse6 .cse2) (and .cse0 .cse1 .cse5) (and .cse7 .cse8 .cse9 .cse2 .cse11) (and .cse7 (not (= |ULTIMATE.start_calculate_output_~input#1| 3)) .cse8 .cse10 .cse9 (= ~a28~0 8) (= ~a25~0 0)) (and .cse4 .cse9 .cse2 .cse11) (and .cse0 .cse4 .cse6 .cse5) (and .cse1 .cse6 .cse11))) [2022-11-16 16:29:45,939 INFO L899 garLoopResultBuilder]: For program point L79(lines 79 423) no Hoare annotation was computed. [2022-11-16 16:29:45,939 INFO L899 garLoopResultBuilder]: For program point L212(lines 212 423) no Hoare annotation was computed. [2022-11-16 16:29:45,939 INFO L902 garLoopResultBuilder]: At program point L610(lines 610 627) the Hoare annotation is: true [2022-11-16 16:29:45,939 INFO L899 garLoopResultBuilder]: For program point L412(lines 412 423) no Hoare annotation was computed. [2022-11-16 16:29:45,939 INFO L899 garLoopResultBuilder]: For program point L347(lines 347 423) no Hoare annotation was computed. [2022-11-16 16:29:45,939 INFO L899 garLoopResultBuilder]: For program point L149(lines 149 423) no Hoare annotation was computed. [2022-11-16 16:29:45,939 INFO L899 garLoopResultBuilder]: For program point L414(lines 414 423) no Hoare annotation was computed. [2022-11-16 16:29:45,940 INFO L899 garLoopResultBuilder]: For program point L84(lines 84 423) no Hoare annotation was computed. [2022-11-16 16:29:45,940 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-16 16:29:45,940 INFO L899 garLoopResultBuilder]: For program point L417(lines 417 423) no Hoare annotation was computed. [2022-11-16 16:29:45,940 INFO L899 garLoopResultBuilder]: For program point L153(lines 153 423) no Hoare annotation was computed. [2022-11-16 16:29:45,940 INFO L895 garLoopResultBuilder]: At program point L616-2(lines 616 626) the Hoare annotation is: (let ((.cse3 (<= 9 ~a28~0)) (.cse7 (= ~a17~0 8)) (.cse8 (= ~a21~0 1)) (.cse10 (= ~a11~0 ~a19~0)) (.cse9 (= ~a11~0 0)) (.cse2 (= ~a19~0 1)) (.cse0 (<= 10 ~a28~0)) (.cse4 (= ~a25~0 1)) (.cse5 (<= ~a28~0 10)) (.cse1 (= ~a11~0 1)) (.cse6 (<= ~a17~0 8)) (.cse11 (<= ~a28~0 7))) (or (and .cse0 .cse1 .cse2) (and (or (and .cse3 .cse1 .cse2) (and .cse3 .cse4 .cse1 .cse5)) .cse6) (and .cse0 .cse5 .cse2) (and .cse7 .cse3 .cse8 .cse9 .cse5 .cse2) (and .cse7 .cse8 .cse10 .cse9 .cse11) (and .cse4 .cse6 .cse2) (and .cse0 .cse1 .cse5) (and .cse7 .cse8 .cse9 .cse2 .cse11) (and .cse7 (not (= |ULTIMATE.start_calculate_output_~input#1| 3)) .cse8 .cse10 .cse9 (= ~a28~0 8) (= ~a25~0 0)) (and .cse4 .cse9 .cse2 .cse11) (and .cse0 .cse4 .cse6 .cse5) (and .cse1 .cse6 .cse11))) [2022-11-16 16:29:45,941 INFO L899 garLoopResultBuilder]: For program point L286(lines 286 423) no Hoare annotation was computed. [2022-11-16 16:29:45,941 INFO L899 garLoopResultBuilder]: For program point L419(lines 419 423) no Hoare annotation was computed. [2022-11-16 16:29:45,941 INFO L899 garLoopResultBuilder]: For program point L222(lines 222 423) no Hoare annotation was computed. [2022-11-16 16:29:45,941 INFO L899 garLoopResultBuilder]: For program point L290(lines 290 423) no Hoare annotation was computed. [2022-11-16 16:29:45,941 INFO L899 garLoopResultBuilder]: For program point L158(lines 158 423) no Hoare annotation was computed. [2022-11-16 16:29:45,941 INFO L899 garLoopResultBuilder]: For program point L92(lines 92 423) no Hoare annotation was computed. [2022-11-16 16:29:45,941 INFO L899 garLoopResultBuilder]: For program point L621(line 621) no Hoare annotation was computed. [2022-11-16 16:29:45,941 INFO L899 garLoopResultBuilder]: For program point L225(lines 225 423) no Hoare annotation was computed. [2022-11-16 16:29:45,942 INFO L899 garLoopResultBuilder]: For program point L490-1(lines 39 608) no Hoare annotation was computed. [2022-11-16 16:29:45,942 INFO L899 garLoopResultBuilder]: For program point L359(lines 359 423) no Hoare annotation was computed. [2022-11-16 16:29:45,942 INFO L899 garLoopResultBuilder]: For program point L293(lines 293 423) no Hoare annotation was computed. [2022-11-16 16:29:45,942 INFO L899 garLoopResultBuilder]: For program point L228(lines 228 423) no Hoare annotation was computed. [2022-11-16 16:29:45,942 INFO L899 garLoopResultBuilder]: For program point L493-1(lines 39 608) no Hoare annotation was computed. [2022-11-16 16:29:45,942 INFO L899 garLoopResultBuilder]: For program point L494(line 494) no Hoare annotation was computed. [2022-11-16 16:29:45,943 INFO L899 garLoopResultBuilder]: For program point L296(lines 296 423) no Hoare annotation was computed. [2022-11-16 16:29:45,943 INFO L899 garLoopResultBuilder]: For program point L164(lines 164 423) no Hoare annotation was computed. [2022-11-16 16:29:45,943 INFO L899 garLoopResultBuilder]: For program point L364(lines 364 423) no Hoare annotation was computed. [2022-11-16 16:29:45,943 INFO L899 garLoopResultBuilder]: For program point L233(lines 233 423) no Hoare annotation was computed. [2022-11-16 16:29:45,943 INFO L899 garLoopResultBuilder]: For program point L101(lines 101 423) no Hoare annotation was computed. [2022-11-16 16:29:45,946 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:29:45,949 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-16 16:29:45,969 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 04:29:45 BoogieIcfgContainer [2022-11-16 16:29:45,970 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-16 16:29:45,970 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-16 16:29:45,970 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-16 16:29:45,971 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-16 16:29:45,971 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 04:26:59" (3/4) ... [2022-11-16 16:29:45,975 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-16 16:29:45,993 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 116 nodes and edges [2022-11-16 16:29:45,994 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 22 nodes and edges [2022-11-16 16:29:45,995 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2022-11-16 16:29:45,996 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-11-16 16:29:46,099 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88d64d36-84c2-4d81-bfe1-135604a2f6f2/bin/utaipan-Xvt2sAort0/witness.graphml [2022-11-16 16:29:46,099 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-16 16:29:46,100 INFO L158 Benchmark]: Toolchain (without parser) took 169087.91ms. Allocated memory was 136.3MB in the beginning and 866.1MB in the end (delta: 729.8MB). Free memory was 100.2MB in the beginning and 788.3MB in the end (delta: -688.1MB). Peak memory consumption was 41.5MB. Max. memory is 16.1GB. [2022-11-16 16:29:46,100 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 136.3MB. Free memory is still 118.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 16:29:46,101 INFO L158 Benchmark]: CACSL2BoogieTranslator took 595.43ms. Allocated memory is still 136.3MB. Free memory was 99.9MB in the beginning and 97.2MB in the end (delta: 2.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-16 16:29:46,101 INFO L158 Benchmark]: Boogie Procedure Inliner took 108.86ms. Allocated memory is still 136.3MB. Free memory was 97.2MB in the beginning and 91.8MB in the end (delta: 5.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-16 16:29:46,101 INFO L158 Benchmark]: Boogie Preprocessor took 62.87ms. Allocated memory is still 136.3MB. Free memory was 91.8MB in the beginning and 87.2MB in the end (delta: 4.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-16 16:29:46,102 INFO L158 Benchmark]: RCFGBuilder took 1860.82ms. Allocated memory is still 136.3MB. Free memory was 87.2MB in the beginning and 63.5MB in the end (delta: 23.7MB). Peak memory consumption was 47.9MB. Max. memory is 16.1GB. [2022-11-16 16:29:46,102 INFO L158 Benchmark]: TraceAbstraction took 166320.54ms. Allocated memory was 136.3MB in the beginning and 866.1MB in the end (delta: 729.8MB). Free memory was 63.5MB in the beginning and 798.7MB in the end (delta: -735.3MB). Peak memory consumption was 484.1MB. Max. memory is 16.1GB. [2022-11-16 16:29:46,102 INFO L158 Benchmark]: Witness Printer took 129.20ms. Allocated memory is still 866.1MB. Free memory was 798.7MB in the beginning and 788.3MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-16 16:29:46,104 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 136.3MB. Free memory is still 118.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 595.43ms. Allocated memory is still 136.3MB. Free memory was 99.9MB in the beginning and 97.2MB in the end (delta: 2.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 108.86ms. Allocated memory is still 136.3MB. Free memory was 97.2MB in the beginning and 91.8MB in the end (delta: 5.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 62.87ms. Allocated memory is still 136.3MB. Free memory was 91.8MB in the beginning and 87.2MB in the end (delta: 4.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1860.82ms. Allocated memory is still 136.3MB. Free memory was 87.2MB in the beginning and 63.5MB in the end (delta: 23.7MB). Peak memory consumption was 47.9MB. Max. memory is 16.1GB. * TraceAbstraction took 166320.54ms. Allocated memory was 136.3MB in the beginning and 866.1MB in the end (delta: 729.8MB). Free memory was 63.5MB in the beginning and 798.7MB in the end (delta: -735.3MB). Peak memory consumption was 484.1MB. Max. memory is 16.1GB. * Witness Printer took 129.20ms. Allocated memory is still 866.1MB. Free memory was 798.7MB in the beginning and 788.3MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 494]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 85 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 166.2s, OverallIterations: 11, TraceHistogramMax: 7, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 5.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.8s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 956 SdHoareTripleChecker+Valid, 4.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 956 mSDsluCounter, 811 SdHoareTripleChecker+Invalid, 3.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 95 mSDsCounter, 571 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3356 IncrementalHoareTripleChecker+Invalid, 3927 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 571 mSolverCounterUnsat, 716 mSDtfsCounter, 3356 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 872 GetRequests, 610 SyntacticMatches, 223 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3649 ImplicationChecksByTransitivity, 21.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2083occurred in iteration=8, InterpolantAutomatonStates: 37, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 11 MinimizatonAttempts, 480 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 41 NumberOfFragments, 359 HoareAnnotationTreeSize, 3 FomulaSimplifications, 66 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 470 FormulaSimplificationTreeSizeReductionInter, 0.7s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 6.7s InterpolantComputationTime, 1996 NumberOfCodeBlocks, 1996 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 2261 ConstructedInterpolants, 0 QuantifiedInterpolants, 9449 SizeOfPredicates, 11 NumberOfNonLiveVariables, 492 ConjunctsInSsa, 12 ConjunctsInUnsatCore, 13 InterpolantComputations, 10 PerfectInterpolantSequences, 2014/2508 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 616]: Loop Invariant Derived loop invariant: ((((((((((((10 <= a28 && a11 == 1) && a19 == 1) || ((((9 <= a28 && a11 == 1) && a19 == 1) || (((9 <= a28 && a25 == 1) && a11 == 1) && a28 <= 10)) && a17 <= 8)) || ((10 <= a28 && a28 <= 10) && a19 == 1)) || (((((a17 == 8 && 9 <= a28) && a21 == 1) && a11 == 0) && a28 <= 10) && a19 == 1)) || ((((a17 == 8 && a21 == 1) && a11 == a19) && a11 == 0) && a28 <= 7)) || ((a25 == 1 && a17 <= 8) && a19 == 1)) || ((10 <= a28 && a11 == 1) && a28 <= 10)) || ((((a17 == 8 && a21 == 1) && a11 == 0) && a19 == 1) && a28 <= 7)) || ((((((a17 == 8 && !(input == 3)) && a21 == 1) && a11 == a19) && a11 == 0) && a28 == 8) && a25 == 0)) || (((a25 == 1 && a11 == 0) && a19 == 1) && a28 <= 7)) || (((10 <= a28 && a25 == 1) && a17 <= 8) && a28 <= 10)) || ((a11 == 1 && a17 <= 8) && a28 <= 7) - InvariantResult [Line: 610]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 39]: Loop Invariant Derived loop invariant: ((((((((((((10 <= a28 && a11 == 1) && a19 == 1) || ((((9 <= a28 && a11 == 1) && a19 == 1) || (((9 <= a28 && a25 == 1) && a11 == 1) && a28 <= 10)) && a17 <= 8)) || ((10 <= a28 && a28 <= 10) && a19 == 1)) || (((((a17 == 8 && 9 <= a28) && a21 == 1) && a11 == 0) && a28 <= 10) && a19 == 1)) || ((((a17 == 8 && a21 == 1) && a11 == a19) && a11 == 0) && a28 <= 7)) || ((a25 == 1 && a17 <= 8) && a19 == 1)) || ((10 <= a28 && a11 == 1) && a28 <= 10)) || ((((a17 == 8 && a21 == 1) && a11 == 0) && a19 == 1) && a28 <= 7)) || ((((((a17 == 8 && !(input == 3)) && a21 == 1) && a11 == a19) && a11 == 0) && a28 == 8) && a25 == 0)) || (((a25 == 1 && a11 == 0) && a19 == 1) && a28 <= 7)) || (((10 <= a28 && a25 == 1) && a17 <= 8) && a28 <= 10)) || ((a11 == 1 && a17 <= 8) && a28 <= 7) RESULT: Ultimate proved your program to be correct! [2022-11-16 16:29:46,130 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88d64d36-84c2-4d81-bfe1-135604a2f6f2/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE