./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound5.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_890e9417-bfb7-450c-9f7f-11657e1ad66e/bin/utaipan-Xvt2sAort0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890e9417-bfb7-450c-9f7f-11657e1ad66e/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_890e9417-bfb7-450c-9f7f-11657e1ad66e/bin/utaipan-Xvt2sAort0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890e9417-bfb7-450c-9f7f-11657e1ad66e/bin/utaipan-Xvt2sAort0/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound5.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890e9417-bfb7-450c-9f7f-11657e1ad66e/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_890e9417-bfb7-450c-9f7f-11657e1ad66e/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 3f9b33d2a8120d9ea8a3a6c5d650c2a90b549ffb583b3e9890b411aeb4530efd --- 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 20:09:38,783 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 20:09:38,785 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 20:09:38,804 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 20:09:38,804 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 20:09:38,805 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 20:09:38,807 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 20:09:38,808 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 20:09:38,810 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 20:09:38,810 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 20:09:38,811 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 20:09:38,813 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 20:09:38,813 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 20:09:38,814 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 20:09:38,815 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 20:09:38,816 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 20:09:38,817 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 20:09:38,818 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 20:09:38,819 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 20:09:38,821 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 20:09:38,822 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 20:09:38,824 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 20:09:38,825 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 20:09:38,826 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 20:09:38,829 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 20:09:38,830 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 20:09:38,830 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 20:09:38,831 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 20:09:38,831 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 20:09:38,832 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 20:09:38,833 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 20:09:38,833 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 20:09:38,834 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 20:09:38,835 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 20:09:38,836 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 20:09:38,836 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 20:09:38,837 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 20:09:38,837 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 20:09:38,837 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 20:09:38,838 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 20:09:38,839 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 20:09:38,839 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890e9417-bfb7-450c-9f7f-11657e1ad66e/bin/utaipan-Xvt2sAort0/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-16 20:09:38,862 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 20:09:38,862 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 20:09:38,862 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 20:09:38,862 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 20:09:38,863 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 20:09:38,863 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 20:09:38,863 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-16 20:09:38,864 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-16 20:09:38,864 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-16 20:09:38,864 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-16 20:09:38,864 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-16 20:09:38,864 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-16 20:09:38,865 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-16 20:09:38,865 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-16 20:09:38,865 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-16 20:09:38,865 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-16 20:09:38,865 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-16 20:09:38,865 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-16 20:09:38,866 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 20:09:38,866 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 20:09:38,867 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 20:09:38,867 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 20:09:38,867 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 20:09:38,867 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 20:09:38,867 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 20:09:38,867 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 20:09:38,868 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 20:09:38,868 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 20:09:38,868 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 20:09:38,868 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 20:09:38,868 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 20:09:38,868 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 20:09:38,869 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 20:09:38,869 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 20:09:38,869 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-16 20:09:38,869 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 20:09:38,869 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 20:09:38,870 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-16 20:09:38,870 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 20:09:38,870 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 20:09:38,870 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-16 20:09:38,870 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_890e9417-bfb7-450c-9f7f-11657e1ad66e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890e9417-bfb7-450c-9f7f-11657e1ad66e/bin/utaipan-Xvt2sAort0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3f9b33d2a8120d9ea8a3a6c5d650c2a90b549ffb583b3e9890b411aeb4530efd [2022-11-16 20:09:39,149 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 20:09:39,185 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 20:09:39,189 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 20:09:39,190 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 20:09:39,191 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 20:09:39,193 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890e9417-bfb7-450c-9f7f-11657e1ad66e/bin/utaipan-Xvt2sAort0/../../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound5.c [2022-11-16 20:09:39,268 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890e9417-bfb7-450c-9f7f-11657e1ad66e/bin/utaipan-Xvt2sAort0/data/5affe6ec6/37c2ac345a6446bfabd5c9a2c15fc800/FLAG09610cb7a [2022-11-16 20:09:39,790 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 20:09:39,793 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890e9417-bfb7-450c-9f7f-11657e1ad66e/sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound5.c [2022-11-16 20:09:39,801 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890e9417-bfb7-450c-9f7f-11657e1ad66e/bin/utaipan-Xvt2sAort0/data/5affe6ec6/37c2ac345a6446bfabd5c9a2c15fc800/FLAG09610cb7a [2022-11-16 20:09:40,164 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890e9417-bfb7-450c-9f7f-11657e1ad66e/bin/utaipan-Xvt2sAort0/data/5affe6ec6/37c2ac345a6446bfabd5c9a2c15fc800 [2022-11-16 20:09:40,171 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 20:09:40,173 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 20:09:40,176 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 20:09:40,176 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 20:09:40,180 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 20:09:40,181 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 08:09:40" (1/1) ... [2022-11-16 20:09:40,183 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@650d4239 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:09:40, skipping insertion in model container [2022-11-16 20:09:40,183 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 08:09:40" (1/1) ... [2022-11-16 20:09:40,191 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 20:09:40,207 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 20:09:40,410 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_890e9417-bfb7-450c-9f7f-11657e1ad66e/sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound5.c[489,502] [2022-11-16 20:09:40,429 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 20:09:40,437 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 20:09:40,449 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_890e9417-bfb7-450c-9f7f-11657e1ad66e/sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound5.c[489,502] [2022-11-16 20:09:40,456 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 20:09:40,470 INFO L208 MainTranslator]: Completed translation [2022-11-16 20:09:40,471 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:09:40 WrapperNode [2022-11-16 20:09:40,471 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 20:09:40,472 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 20:09:40,472 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 20:09:40,473 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 20:09:40,480 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:09:40" (1/1) ... [2022-11-16 20:09:40,487 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:09:40" (1/1) ... [2022-11-16 20:09:40,506 INFO L138 Inliner]: procedures = 14, calls = 18, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 56 [2022-11-16 20:09:40,507 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 20:09:40,507 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 20:09:40,508 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 20:09:40,508 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 20:09:40,517 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:09:40" (1/1) ... [2022-11-16 20:09:40,517 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:09:40" (1/1) ... [2022-11-16 20:09:40,518 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:09:40" (1/1) ... [2022-11-16 20:09:40,519 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:09:40" (1/1) ... [2022-11-16 20:09:40,522 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:09:40" (1/1) ... [2022-11-16 20:09:40,525 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:09:40" (1/1) ... [2022-11-16 20:09:40,526 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:09:40" (1/1) ... [2022-11-16 20:09:40,527 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:09:40" (1/1) ... [2022-11-16 20:09:40,529 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 20:09:40,530 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 20:09:40,530 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 20:09:40,530 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 20:09:40,531 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:09:40" (1/1) ... [2022-11-16 20:09:40,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 20:09:40,555 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890e9417-bfb7-450c-9f7f-11657e1ad66e/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 20:09:40,568 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890e9417-bfb7-450c-9f7f-11657e1ad66e/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 20:09:40,596 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890e9417-bfb7-450c-9f7f-11657e1ad66e/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 20:09:40,614 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 20:09:40,614 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-16 20:09:40,614 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-16 20:09:40,615 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 20:09:40,615 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 20:09:40,615 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 20:09:40,615 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-16 20:09:40,615 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-16 20:09:40,690 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 20:09:40,693 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 20:09:40,857 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 20:09:40,906 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 20:09:40,906 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-16 20:09:40,909 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 08:09:40 BoogieIcfgContainer [2022-11-16 20:09:40,909 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 20:09:40,911 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 20:09:40,911 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 20:09:40,917 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 20:09:40,917 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 08:09:40" (1/3) ... [2022-11-16 20:09:40,918 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cdb9384 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 08:09:40, skipping insertion in model container [2022-11-16 20:09:40,918 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:09:40" (2/3) ... [2022-11-16 20:09:40,919 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cdb9384 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 08:09:40, skipping insertion in model container [2022-11-16 20:09:40,919 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 08:09:40" (3/3) ... [2022-11-16 20:09:40,920 INFO L112 eAbstractionObserver]: Analyzing ICFG egcd-ll_valuebound5.c [2022-11-16 20:09:40,940 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 20:09:40,940 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 20:09:40,992 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 20:09:41,000 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;@14239fe9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 20:09:41,000 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-16 20:09:41,004 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 12 states have internal predecessors, (15), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-16 20:09:41,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-16 20:09:41,013 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:09:41,014 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 20:09:41,016 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 20:09:41,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:09:41,028 INFO L85 PathProgramCache]: Analyzing trace with hash -2040384688, now seen corresponding path program 1 times [2022-11-16 20:09:41,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:09:41,041 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592420970] [2022-11-16 20:09:41,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:09:41,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:09:41,144 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 20:09:41,145 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1722210573] [2022-11-16 20:09:41,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:09:41,146 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 20:09:41,146 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890e9417-bfb7-450c-9f7f-11657e1ad66e/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 20:09:41,150 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890e9417-bfb7-450c-9f7f-11657e1ad66e/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 20:09:41,158 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890e9417-bfb7-450c-9f7f-11657e1ad66e/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 20:09:41,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:09:41,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-16 20:09:41,281 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:09:41,428 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-16 20:09:41,428 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 20:09:41,589 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 20:09:41,589 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:09:41,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592420970] [2022-11-16 20:09:41,590 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 20:09:41,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1722210573] [2022-11-16 20:09:41,591 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1722210573] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-16 20:09:41,591 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 20:09:41,591 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2022-11-16 20:09:41,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218341063] [2022-11-16 20:09:41,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:09:41,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 20:09:41,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:09:41,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 20:09:41,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-11-16 20:09:41,630 INFO L87 Difference]: Start difference. First operand has 26 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 12 states have internal predecessors, (15), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-16 20:09:41,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:09:41,790 INFO L93 Difference]: Finished difference Result 49 states and 78 transitions. [2022-11-16 20:09:41,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 20:09:41,792 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 20 [2022-11-16 20:09:41,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:09:41,805 INFO L225 Difference]: With dead ends: 49 [2022-11-16 20:09:41,805 INFO L226 Difference]: Without dead ends: 30 [2022-11-16 20:09:41,808 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-11-16 20:09:41,812 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 6 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 16 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 20:09:41,815 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 102 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 16 Unchecked, 0.1s Time] [2022-11-16 20:09:41,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-11-16 20:09:41,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2022-11-16 20:09:41,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 16 states have internal predecessors, (18), 12 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 10 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-16 20:09:41,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 41 transitions. [2022-11-16 20:09:41,862 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 41 transitions. Word has length 20 [2022-11-16 20:09:41,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:09:41,863 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 41 transitions. [2022-11-16 20:09:41,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-16 20:09:41,863 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 41 transitions. [2022-11-16 20:09:41,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-16 20:09:41,865 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:09:41,865 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 20:09:41,877 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890e9417-bfb7-450c-9f7f-11657e1ad66e/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 20:09:42,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890e9417-bfb7-450c-9f7f-11657e1ad66e/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-11-16 20:09:42,071 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 20:09:42,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:09:42,072 INFO L85 PathProgramCache]: Analyzing trace with hash -1970941867, now seen corresponding path program 1 times [2022-11-16 20:09:42,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:09:42,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964487937] [2022-11-16 20:09:42,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:09:42,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:09:42,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:09:42,137 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 20:09:42,138 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:09:42,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964487937] [2022-11-16 20:09:42,138 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964487937] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:09:42,139 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:09:42,139 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 20:09:42,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747986807] [2022-11-16 20:09:42,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:09:42,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-16 20:09:42,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:09:42,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-16 20:09:42,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 20:09:42,141 INFO L87 Difference]: Start difference. First operand 30 states and 41 transitions. Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-16 20:09:42,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:09:42,155 INFO L93 Difference]: Finished difference Result 40 states and 53 transitions. [2022-11-16 20:09:42,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-16 20:09:42,156 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 20 [2022-11-16 20:09:42,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:09:42,158 INFO L225 Difference]: With dead ends: 40 [2022-11-16 20:09:42,158 INFO L226 Difference]: Without dead ends: 30 [2022-11-16 20:09:42,158 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 20:09:42,160 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 20:09:42,161 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 30 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 20:09:42,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-11-16 20:09:42,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2022-11-16 20:09:42,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 16 states have internal predecessors, (16), 12 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 10 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-16 20:09:42,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 39 transitions. [2022-11-16 20:09:42,172 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 39 transitions. Word has length 20 [2022-11-16 20:09:42,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:09:42,173 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 39 transitions. [2022-11-16 20:09:42,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-16 20:09:42,173 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 39 transitions. [2022-11-16 20:09:42,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-16 20:09:42,174 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:09:42,175 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 20:09:42,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 20:09:42,175 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 20:09:42,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:09:42,176 INFO L85 PathProgramCache]: Analyzing trace with hash -879048764, now seen corresponding path program 1 times [2022-11-16 20:09:42,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:09:42,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090155783] [2022-11-16 20:09:42,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:09:42,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:09:42,195 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 20:09:42,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [829212411] [2022-11-16 20:09:42,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:09:42,196 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 20:09:42,197 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890e9417-bfb7-450c-9f7f-11657e1ad66e/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 20:09:42,198 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890e9417-bfb7-450c-9f7f-11657e1ad66e/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 20:09:42,226 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890e9417-bfb7-450c-9f7f-11657e1ad66e/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 20:09:42,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:09:42,276 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-16 20:09:42,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:09:42,461 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-16 20:09:42,461 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 20:09:42,630 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 20:09:42,630 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:09:42,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090155783] [2022-11-16 20:09:42,631 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 20:09:42,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [829212411] [2022-11-16 20:09:42,634 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [829212411] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-16 20:09:42,634 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 20:09:42,635 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2022-11-16 20:09:42,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962668832] [2022-11-16 20:09:42,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:09:42,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 20:09:42,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:09:42,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 20:09:42,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-11-16 20:09:42,640 INFO L87 Difference]: Start difference. First operand 30 states and 39 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 20:09:42,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:09:42,773 INFO L93 Difference]: Finished difference Result 43 states and 57 transitions. [2022-11-16 20:09:42,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 20:09:42,774 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 25 [2022-11-16 20:09:42,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:09:42,777 INFO L225 Difference]: With dead ends: 43 [2022-11-16 20:09:42,778 INFO L226 Difference]: Without dead ends: 41 [2022-11-16 20:09:42,779 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-11-16 20:09:42,783 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 5 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 20:09:42,785 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 101 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 20:09:42,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2022-11-16 20:09:42,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 35. [2022-11-16 20:09:42,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 19 states have internal predecessors, (19), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 11 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-16 20:09:42,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 44 transitions. [2022-11-16 20:09:42,799 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 44 transitions. Word has length 25 [2022-11-16 20:09:42,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:09:42,800 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 44 transitions. [2022-11-16 20:09:42,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 20:09:42,800 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 44 transitions. [2022-11-16 20:09:42,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-16 20:09:42,801 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:09:42,801 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 20:09:42,807 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890e9417-bfb7-450c-9f7f-11657e1ad66e/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 20:09:43,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890e9417-bfb7-450c-9f7f-11657e1ad66e/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 20:09:43,002 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 20:09:43,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:09:43,003 INFO L85 PathProgramCache]: Analyzing trace with hash 1554903952, now seen corresponding path program 1 times [2022-11-16 20:09:43,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:09:43,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968127845] [2022-11-16 20:09:43,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:09:43,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:09:43,021 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 20:09:43,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1588575978] [2022-11-16 20:09:43,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:09:43,022 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 20:09:43,022 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890e9417-bfb7-450c-9f7f-11657e1ad66e/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 20:09:43,023 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890e9417-bfb7-450c-9f7f-11657e1ad66e/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 20:09:43,074 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890e9417-bfb7-450c-9f7f-11657e1ad66e/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 20:09:43,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:09:43,113 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-16 20:09:43,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:09:43,379 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-16 20:09:43,380 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 20:09:43,498 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:09:43,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968127845] [2022-11-16 20:09:43,499 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 20:09:43,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1588575978] [2022-11-16 20:09:43,499 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1588575978] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 20:09:43,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [570955888] [2022-11-16 20:09:43,520 INFO L159 IcfgInterpreter]: Started Sifa with 19 locations of interest [2022-11-16 20:09:43,520 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 20:09:43,524 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 20:09:43,530 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 20:09:43,531 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 20:09:44,314 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 38 for LOIs [2022-11-16 20:09:44,326 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 59 for LOIs [2022-11-16 20:09:44,349 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 20:09:45,610 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [570955888] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:09:45,610 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 20:09:45,611 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [10] total 21 [2022-11-16 20:09:45,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165773914] [2022-11-16 20:09:45,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:09:45,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-16 20:09:45,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:09:45,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-16 20:09:45,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=447, Unknown=0, NotChecked=0, Total=552 [2022-11-16 20:09:45,613 INFO L87 Difference]: Start difference. First operand 35 states and 44 transitions. Second operand has 13 states, 8 states have (on average 1.25) internal successors, (10), 6 states have internal predecessors, (10), 5 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2022-11-16 20:09:45,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:09:45,991 INFO L93 Difference]: Finished difference Result 47 states and 60 transitions. [2022-11-16 20:09:45,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-16 20:09:45,992 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 8 states have (on average 1.25) internal successors, (10), 6 states have internal predecessors, (10), 5 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) Word has length 30 [2022-11-16 20:09:45,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:09:45,996 INFO L225 Difference]: With dead ends: 47 [2022-11-16 20:09:45,997 INFO L226 Difference]: Without dead ends: 43 [2022-11-16 20:09:45,999 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 40 SyntacticMatches, 7 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=105, Invalid=447, Unknown=0, NotChecked=0, Total=552 [2022-11-16 20:09:46,009 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 25 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 20:09:46,015 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 41 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 20:09:46,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-11-16 20:09:46,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2022-11-16 20:09:46,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 23 states have internal predecessors, (24), 16 states have call successors, (16), 5 states have call predecessors, (16), 5 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2022-11-16 20:09:46,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 54 transitions. [2022-11-16 20:09:46,048 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 54 transitions. Word has length 30 [2022-11-16 20:09:46,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:09:46,049 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 54 transitions. [2022-11-16 20:09:46,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 8 states have (on average 1.25) internal successors, (10), 6 states have internal predecessors, (10), 5 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2022-11-16 20:09:46,050 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 54 transitions. [2022-11-16 20:09:46,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-16 20:09:46,052 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:09:46,053 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 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 20:09:46,067 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890e9417-bfb7-450c-9f7f-11657e1ad66e/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-16 20:09:46,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890e9417-bfb7-450c-9f7f-11657e1ad66e/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-11-16 20:09:46,259 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 20:09:46,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:09:46,260 INFO L85 PathProgramCache]: Analyzing trace with hash 1140127173, now seen corresponding path program 1 times [2022-11-16 20:09:46,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:09:46,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437507331] [2022-11-16 20:09:46,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:09:46,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:09:46,275 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 20:09:46,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1484013658] [2022-11-16 20:09:46,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:09:46,276 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 20:09:46,276 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890e9417-bfb7-450c-9f7f-11657e1ad66e/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 20:09:46,277 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890e9417-bfb7-450c-9f7f-11657e1ad66e/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 20:09:46,294 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890e9417-bfb7-450c-9f7f-11657e1ad66e/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 20:09:46,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:09:46,344 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 20:09:46,348 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:09:46,368 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-16 20:09:46,369 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 20:09:46,370 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:09:46,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437507331] [2022-11-16 20:09:46,370 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 20:09:46,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1484013658] [2022-11-16 20:09:46,371 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1484013658] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:09:46,371 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:09:46,371 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 20:09:46,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060716664] [2022-11-16 20:09:46,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:09:46,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 20:09:46,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:09:46,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 20:09:46,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 20:09:46,373 INFO L87 Difference]: Start difference. First operand 43 states and 54 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-11-16 20:09:46,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:09:46,450 INFO L93 Difference]: Finished difference Result 49 states and 59 transitions. [2022-11-16 20:09:46,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 20:09:46,451 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 36 [2022-11-16 20:09:46,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:09:46,452 INFO L225 Difference]: With dead ends: 49 [2022-11-16 20:09:46,452 INFO L226 Difference]: Without dead ends: 47 [2022-11-16 20:09:46,452 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-16 20:09:46,453 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 5 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 20:09:46,454 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 95 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 20:09:46,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2022-11-16 20:09:46,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2022-11-16 20:09:46,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 24 states have (on average 1.125) internal successors, (27), 26 states have internal predecessors, (27), 16 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2022-11-16 20:09:46,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 57 transitions. [2022-11-16 20:09:46,479 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 57 transitions. Word has length 36 [2022-11-16 20:09:46,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:09:46,480 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 57 transitions. [2022-11-16 20:09:46,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-11-16 20:09:46,480 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 57 transitions. [2022-11-16 20:09:46,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-11-16 20:09:46,481 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:09:46,481 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 20:09:46,491 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890e9417-bfb7-450c-9f7f-11657e1ad66e/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-16 20:09:46,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890e9417-bfb7-450c-9f7f-11657e1ad66e/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 20:09:46,687 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 20:09:46,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:09:46,688 INFO L85 PathProgramCache]: Analyzing trace with hash -1417905632, now seen corresponding path program 1 times [2022-11-16 20:09:46,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:09:46,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85669283] [2022-11-16 20:09:46,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:09:46,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:09:46,702 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 20:09:46,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [47216057] [2022-11-16 20:09:46,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:09:46,703 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 20:09:46,703 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890e9417-bfb7-450c-9f7f-11657e1ad66e/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 20:09:46,704 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890e9417-bfb7-450c-9f7f-11657e1ad66e/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 20:09:46,715 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890e9417-bfb7-450c-9f7f-11657e1ad66e/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-16 20:09:46,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:09:46,776 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-16 20:09:46,779 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:09:46,987 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-16 20:09:46,987 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 20:09:47,204 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-16 20:09:47,205 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:09:47,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85669283] [2022-11-16 20:09:47,207 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 20:09:47,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [47216057] [2022-11-16 20:09:47,208 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [47216057] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 20:09:47,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [476247416] [2022-11-16 20:09:47,211 INFO L159 IcfgInterpreter]: Started Sifa with 20 locations of interest [2022-11-16 20:09:47,212 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 20:09:47,212 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 20:09:47,212 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 20:09:47,213 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 20:09:50,350 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 8 for LOIs [2022-11-16 20:09:50,355 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 59 for LOIs [2022-11-16 20:09:50,369 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 20:09:51,226 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1430#(and (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-16 20:09:51,227 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-16 20:09:51,227 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 20:09:51,227 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6] total 12 [2022-11-16 20:09:51,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927476369] [2022-11-16 20:09:51,227 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 20:09:51,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 20:09:51,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:09:51,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 20:09:51,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=507, Unknown=0, NotChecked=0, Total=600 [2022-11-16 20:09:51,229 INFO L87 Difference]: Start difference. First operand 47 states and 57 transitions. Second operand has 12 states, 11 states have (on average 2.272727272727273) internal successors, (25), 11 states have internal predecessors, (25), 4 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-16 20:09:51,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:09:51,530 INFO L93 Difference]: Finished difference Result 62 states and 78 transitions. [2022-11-16 20:09:51,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 20:09:51,531 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.272727272727273) internal successors, (25), 11 states have internal predecessors, (25), 4 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 37 [2022-11-16 20:09:51,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:09:51,532 INFO L225 Difference]: With dead ends: 62 [2022-11-16 20:09:51,532 INFO L226 Difference]: Without dead ends: 60 [2022-11-16 20:09:51,533 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 84 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=109, Invalid=593, Unknown=0, NotChecked=0, Total=702 [2022-11-16 20:09:51,533 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 18 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 290 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 20:09:51,534 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 106 Invalid, 303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 290 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 20:09:51,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2022-11-16 20:09:51,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 51. [2022-11-16 20:09:51,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 27 states have (on average 1.1111111111111112) internal successors, (30), 29 states have internal predecessors, (30), 16 states have call successors, (16), 7 states have call predecessors, (16), 7 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2022-11-16 20:09:51,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 60 transitions. [2022-11-16 20:09:51,552 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 60 transitions. Word has length 37 [2022-11-16 20:09:51,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:09:51,552 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 60 transitions. [2022-11-16 20:09:51,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.272727272727273) internal successors, (25), 11 states have internal predecessors, (25), 4 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-16 20:09:51,553 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 60 transitions. [2022-11-16 20:09:51,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-11-16 20:09:51,553 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:09:51,554 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 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 20:09:51,566 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890e9417-bfb7-450c-9f7f-11657e1ad66e/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-16 20:09:51,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890e9417-bfb7-450c-9f7f-11657e1ad66e/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 20:09:51,760 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 20:09:51,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:09:51,760 INFO L85 PathProgramCache]: Analyzing trace with hash -1922069073, now seen corresponding path program 1 times [2022-11-16 20:09:51,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:09:51,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959427364] [2022-11-16 20:09:51,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:09:51,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:09:51,772 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 20:09:51,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2041298339] [2022-11-16 20:09:51,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:09:51,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 20:09:51,773 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890e9417-bfb7-450c-9f7f-11657e1ad66e/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 20:09:51,774 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890e9417-bfb7-450c-9f7f-11657e1ad66e/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 20:09:51,785 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890e9417-bfb7-450c-9f7f-11657e1ad66e/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-16 20:09:51,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:09:51,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-16 20:09:51,849 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:09:51,945 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 15 proven. 5 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-16 20:09:51,946 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 20:09:52,086 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 15 proven. 5 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-16 20:09:52,086 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:09:52,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959427364] [2022-11-16 20:09:52,086 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 20:09:52,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2041298339] [2022-11-16 20:09:52,087 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2041298339] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 20:09:52,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1217015150] [2022-11-16 20:09:52,091 INFO L159 IcfgInterpreter]: Started Sifa with 22 locations of interest [2022-11-16 20:09:52,092 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 20:09:52,093 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 20:09:52,093 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 20:09:52,093 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 20:09:52,680 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 38 for LOIs [2022-11-16 20:09:52,689 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 59 for LOIs [2022-11-16 20:09:52,703 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 20:09:54,264 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1217015150] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:09:54,264 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-16 20:09:54,265 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [9, 8] total 24 [2022-11-16 20:09:54,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943150206] [2022-11-16 20:09:54,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:09:54,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-16 20:09:54,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:09:54,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-16 20:09:54,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=442, Unknown=0, NotChecked=0, Total=552 [2022-11-16 20:09:54,267 INFO L87 Difference]: Start difference. First operand 51 states and 60 transitions. Second operand has 14 states, 8 states have (on average 1.375) internal successors, (11), 7 states have internal predecessors, (11), 6 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2022-11-16 20:09:54,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:09:54,580 INFO L93 Difference]: Finished difference Result 61 states and 68 transitions. [2022-11-16 20:09:54,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-16 20:09:54,581 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 8 states have (on average 1.375) internal successors, (11), 7 states have internal predecessors, (11), 6 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) Word has length 41 [2022-11-16 20:09:54,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:09:54,582 INFO L225 Difference]: With dead ends: 61 [2022-11-16 20:09:54,582 INFO L226 Difference]: Without dead ends: 49 [2022-11-16 20:09:54,583 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 87 SyntacticMatches, 12 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 279 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=110, Invalid=442, Unknown=0, NotChecked=0, Total=552 [2022-11-16 20:09:54,584 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 28 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 20:09:54,584 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 39 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 20:09:54,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2022-11-16 20:09:54,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2022-11-16 20:09:54,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 27 states have (on average 1.0740740740740742) internal successors, (29), 28 states have internal predecessors, (29), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-16 20:09:54,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 56 transitions. [2022-11-16 20:09:54,601 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 56 transitions. Word has length 41 [2022-11-16 20:09:54,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:09:54,602 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 56 transitions. [2022-11-16 20:09:54,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 8 states have (on average 1.375) internal successors, (11), 7 states have internal predecessors, (11), 6 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2022-11-16 20:09:54,602 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 56 transitions. [2022-11-16 20:09:54,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-11-16 20:09:54,603 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:09:54,603 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 20:09:54,614 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890e9417-bfb7-450c-9f7f-11657e1ad66e/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-16 20:09:54,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890e9417-bfb7-450c-9f7f-11657e1ad66e/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 20:09:54,810 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 20:09:54,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:09:54,810 INFO L85 PathProgramCache]: Analyzing trace with hash -1662237964, now seen corresponding path program 2 times [2022-11-16 20:09:54,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:09:54,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566717756] [2022-11-16 20:09:54,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:09:54,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:09:54,822 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 20:09:54,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [349389390] [2022-11-16 20:09:54,825 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 20:09:54,825 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 20:09:54,825 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890e9417-bfb7-450c-9f7f-11657e1ad66e/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 20:09:54,826 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890e9417-bfb7-450c-9f7f-11657e1ad66e/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 20:09:54,834 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890e9417-bfb7-450c-9f7f-11657e1ad66e/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-16 20:09:54,874 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-16 20:09:54,874 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 20:09:54,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-16 20:09:54,877 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:09:55,270 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 10 proven. 5 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-11-16 20:09:55,270 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 20:09:55,557 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-11-16 20:09:55,557 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:09:55,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566717756] [2022-11-16 20:09:55,558 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 20:09:55,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [349389390] [2022-11-16 20:09:55,558 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [349389390] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 20:09:55,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [52313002] [2022-11-16 20:09:55,560 INFO L159 IcfgInterpreter]: Started Sifa with 20 locations of interest [2022-11-16 20:09:55,561 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 20:09:55,561 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 20:09:55,561 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 20:09:55,561 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 20:09:58,413 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 8 for LOIs [2022-11-16 20:09:58,416 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 59 for LOIs [2022-11-16 20:09:58,429 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 20:09:59,481 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2301#(and (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-16 20:09:59,481 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-16 20:09:59,481 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 20:09:59,481 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6] total 13 [2022-11-16 20:09:59,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250248711] [2022-11-16 20:09:59,482 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 20:09:59,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-16 20:09:59,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:09:59,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-16 20:09:59,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=551, Unknown=0, NotChecked=0, Total=650 [2022-11-16 20:09:59,485 INFO L87 Difference]: Start difference. First operand 49 states and 56 transitions. Second operand has 13 states, 12 states have (on average 1.75) internal successors, (21), 10 states have internal predecessors, (21), 6 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 7 states have call predecessors, (16), 6 states have call successors, (16) [2022-11-16 20:10:01,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:10:01,779 INFO L93 Difference]: Finished difference Result 73 states and 93 transitions. [2022-11-16 20:10:01,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-16 20:10:01,780 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 1.75) internal successors, (21), 10 states have internal predecessors, (21), 6 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 7 states have call predecessors, (16), 6 states have call successors, (16) Word has length 42 [2022-11-16 20:10:01,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:10:01,787 INFO L225 Difference]: With dead ends: 73 [2022-11-16 20:10:01,787 INFO L226 Difference]: Without dead ends: 71 [2022-11-16 20:10:01,788 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 99 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=129, Invalid=741, Unknown=0, NotChecked=0, Total=870 [2022-11-16 20:10:01,789 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 23 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-16 20:10:01,789 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 152 Invalid, 298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-16 20:10:01,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2022-11-16 20:10:01,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 61. [2022-11-16 20:10:01,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 33 states have (on average 1.0909090909090908) internal successors, (36), 35 states have internal predecessors, (36), 19 states have call successors, (19), 8 states have call predecessors, (19), 8 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) [2022-11-16 20:10:01,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 73 transitions. [2022-11-16 20:10:01,820 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 73 transitions. Word has length 42 [2022-11-16 20:10:01,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:10:01,820 INFO L495 AbstractCegarLoop]: Abstraction has 61 states and 73 transitions. [2022-11-16 20:10:01,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 1.75) internal successors, (21), 10 states have internal predecessors, (21), 6 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 7 states have call predecessors, (16), 6 states have call successors, (16) [2022-11-16 20:10:01,821 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 73 transitions. [2022-11-16 20:10:01,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-11-16 20:10:01,822 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:10:01,822 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 20:10:01,832 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890e9417-bfb7-450c-9f7f-11657e1ad66e/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-16 20:10:02,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890e9417-bfb7-450c-9f7f-11657e1ad66e/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-16 20:10:02,027 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 20:10:02,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:10:02,027 INFO L85 PathProgramCache]: Analyzing trace with hash -335940000, now seen corresponding path program 3 times [2022-11-16 20:10:02,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:10:02,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689459385] [2022-11-16 20:10:02,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:10:02,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:10:02,037 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 20:10:02,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [674688276] [2022-11-16 20:10:02,038 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-16 20:10:02,038 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 20:10:02,038 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890e9417-bfb7-450c-9f7f-11657e1ad66e/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 20:10:02,039 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890e9417-bfb7-450c-9f7f-11657e1ad66e/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 20:10:02,062 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890e9417-bfb7-450c-9f7f-11657e1ad66e/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-16 20:10:02,108 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-16 20:10:02,108 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 20:10:02,109 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 34 conjunts are in the unsatisfiable core [2022-11-16 20:10:02,111 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:10:02,585 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 22 proven. 13 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-16 20:10:02,585 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 20:10:03,281 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 20 proven. 12 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-16 20:10:03,281 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:10:03,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689459385] [2022-11-16 20:10:03,281 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 20:10:03,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [674688276] [2022-11-16 20:10:03,282 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [674688276] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 20:10:03,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [935469615] [2022-11-16 20:10:03,284 INFO L159 IcfgInterpreter]: Started Sifa with 20 locations of interest [2022-11-16 20:10:03,284 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 20:10:03,285 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 20:10:03,285 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 20:10:03,285 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 20:10:06,017 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 8 for LOIs [2022-11-16 20:10:06,020 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 59 for LOIs [2022-11-16 20:10:06,034 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 20:10:07,329 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2820#(and (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-16 20:10:07,329 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-16 20:10:07,330 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 20:10:07,330 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 17 [2022-11-16 20:10:07,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537128374] [2022-11-16 20:10:07,330 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 20:10:07,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-16 20:10:07,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:10:07,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-16 20:10:07,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=752, Unknown=0, NotChecked=0, Total=870 [2022-11-16 20:10:07,332 INFO L87 Difference]: Start difference. First operand 61 states and 73 transitions. Second operand has 17 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 12 states have internal predecessors, (25), 8 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 7 states have call predecessors, (16), 8 states have call successors, (16) [2022-11-16 20:10:08,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:10:08,342 INFO L93 Difference]: Finished difference Result 75 states and 88 transitions. [2022-11-16 20:10:08,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-16 20:10:08,343 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 12 states have internal predecessors, (25), 8 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 7 states have call predecessors, (16), 8 states have call successors, (16) Word has length 47 [2022-11-16 20:10:08,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:10:08,346 INFO L225 Difference]: With dead ends: 75 [2022-11-16 20:10:08,346 INFO L226 Difference]: Without dead ends: 69 [2022-11-16 20:10:08,347 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 109 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 365 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=172, Invalid=1088, Unknown=0, NotChecked=0, Total=1260 [2022-11-16 20:10:08,347 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 31 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 399 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 465 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 399 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-16 20:10:08,348 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 83 Invalid, 465 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 399 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-16 20:10:08,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2022-11-16 20:10:08,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 67. [2022-11-16 20:10:08,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 39 states have (on average 1.0769230769230769) internal successors, (42), 41 states have internal predecessors, (42), 17 states have call successors, (17), 10 states have call predecessors, (17), 10 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2022-11-16 20:10:08,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 75 transitions. [2022-11-16 20:10:08,379 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 75 transitions. Word has length 47 [2022-11-16 20:10:08,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:10:08,379 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 75 transitions. [2022-11-16 20:10:08,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 12 states have internal predecessors, (25), 8 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 7 states have call predecessors, (16), 8 states have call successors, (16) [2022-11-16 20:10:08,380 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 75 transitions. [2022-11-16 20:10:08,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-11-16 20:10:08,388 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:10:08,388 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 20:10:08,398 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890e9417-bfb7-450c-9f7f-11657e1ad66e/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-11-16 20:10:08,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890e9417-bfb7-450c-9f7f-11657e1ad66e/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-11-16 20:10:08,594 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 20:10:08,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:10:08,594 INFO L85 PathProgramCache]: Analyzing trace with hash 1514449119, now seen corresponding path program 1 times [2022-11-16 20:10:08,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:10:08,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927650348] [2022-11-16 20:10:08,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:10:08,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:10:08,604 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 20:10:08,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [914162144] [2022-11-16 20:10:08,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:10:08,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 20:10:08,605 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890e9417-bfb7-450c-9f7f-11657e1ad66e/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 20:10:08,606 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890e9417-bfb7-450c-9f7f-11657e1ad66e/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 20:10:08,615 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890e9417-bfb7-450c-9f7f-11657e1ad66e/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-16 20:10:08,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:10:08,666 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-16 20:10:08,668 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:10:08,737 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 41 proven. 5 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2022-11-16 20:10:08,737 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 20:10:08,857 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 41 proven. 5 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2022-11-16 20:10:08,857 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:10:08,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927650348] [2022-11-16 20:10:08,858 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 20:10:08,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [914162144] [2022-11-16 20:10:08,858 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [914162144] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 20:10:08,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1684108801] [2022-11-16 20:10:08,860 INFO L159 IcfgInterpreter]: Started Sifa with 22 locations of interest [2022-11-16 20:10:08,860 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 20:10:08,861 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 20:10:08,861 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 20:10:08,861 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 20:10:11,264 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 23 for LOIs [2022-11-16 20:10:11,278 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 59 for LOIs [2022-11-16 20:10:11,299 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 20:10:12,792 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3409#(and (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-16 20:10:12,792 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-16 20:10:12,793 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 20:10:12,793 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 12 [2022-11-16 20:10:12,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458983395] [2022-11-16 20:10:12,793 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 20:10:12,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 20:10:12,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:10:12,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 20:10:12,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=549, Unknown=0, NotChecked=0, Total=650 [2022-11-16 20:10:12,795 INFO L87 Difference]: Start difference. First operand 67 states and 75 transitions. Second operand has 12 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 5 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) [2022-11-16 20:10:13,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:10:13,033 INFO L93 Difference]: Finished difference Result 73 states and 80 transitions. [2022-11-16 20:10:13,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 20:10:13,033 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 5 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) Word has length 58 [2022-11-16 20:10:13,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:10:13,034 INFO L225 Difference]: With dead ends: 73 [2022-11-16 20:10:13,035 INFO L226 Difference]: Without dead ends: 61 [2022-11-16 20:10:13,035 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 137 SyntacticMatches, 11 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 436 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=117, Invalid=639, Unknown=0, NotChecked=0, Total=756 [2022-11-16 20:10:13,036 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 14 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 20:10:13,036 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 87 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 20:10:13,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2022-11-16 20:10:13,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2022-11-16 20:10:13,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 36 states have (on average 1.0277777777777777) internal successors, (37), 37 states have internal predecessors, (37), 15 states have call successors, (15), 9 states have call predecessors, (15), 9 states have return successors, (15), 14 states have call predecessors, (15), 15 states have call successors, (15) [2022-11-16 20:10:13,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 67 transitions. [2022-11-16 20:10:13,057 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 67 transitions. Word has length 58 [2022-11-16 20:10:13,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:10:13,057 INFO L495 AbstractCegarLoop]: Abstraction has 61 states and 67 transitions. [2022-11-16 20:10:13,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 5 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) [2022-11-16 20:10:13,058 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 67 transitions. [2022-11-16 20:10:13,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-16 20:10:13,058 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:10:13,059 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 20:10:13,071 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890e9417-bfb7-450c-9f7f-11657e1ad66e/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-11-16 20:10:13,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890e9417-bfb7-450c-9f7f-11657e1ad66e/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 20:10:13,264 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 20:10:13,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:10:13,264 INFO L85 PathProgramCache]: Analyzing trace with hash 345062644, now seen corresponding path program 4 times [2022-11-16 20:10:13,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:10:13,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493326521] [2022-11-16 20:10:13,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:10:13,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:10:13,275 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 20:10:13,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1289874753] [2022-11-16 20:10:13,276 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-16 20:10:13,276 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 20:10:13,276 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890e9417-bfb7-450c-9f7f-11657e1ad66e/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 20:10:13,277 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890e9417-bfb7-450c-9f7f-11657e1ad66e/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 20:10:13,282 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890e9417-bfb7-450c-9f7f-11657e1ad66e/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-16 20:10:13,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:10:13,361 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 50 conjunts are in the unsatisfiable core [2022-11-16 20:10:13,363 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:10:16,355 INFO L134 CoverageAnalysis]: Checked inductivity of 236 backedges. 62 proven. 33 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2022-11-16 20:10:16,355 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 20:10:16,929 INFO L134 CoverageAnalysis]: Checked inductivity of 236 backedges. 73 proven. 8 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2022-11-16 20:10:16,929 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:10:16,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493326521] [2022-11-16 20:10:16,930 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 20:10:16,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1289874753] [2022-11-16 20:10:16,931 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1289874753] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 20:10:16,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1753028308] [2022-11-16 20:10:16,933 INFO L159 IcfgInterpreter]: Started Sifa with 20 locations of interest [2022-11-16 20:10:16,933 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 20:10:16,933 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 20:10:16,933 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 20:10:16,934 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 20:10:19,340 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 8 for LOIs [2022-11-16 20:10:19,344 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 59 for LOIs [2022-11-16 20:10:19,358 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 20:10:20,711 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4090#(and (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-16 20:10:20,711 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-16 20:10:20,711 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 20:10:20,711 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 8] total 19 [2022-11-16 20:10:20,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150113135] [2022-11-16 20:10:20,711 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 20:10:20,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-16 20:10:20,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:10:20,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-16 20:10:20,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=849, Unknown=0, NotChecked=0, Total=992 [2022-11-16 20:10:20,713 INFO L87 Difference]: Start difference. First operand 61 states and 67 transitions. Second operand has 19 states, 16 states have (on average 1.9375) internal successors, (31), 14 states have internal predecessors, (31), 9 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (24), 11 states have call predecessors, (24), 9 states have call successors, (24) [2022-11-16 20:10:23,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:10:23,784 INFO L93 Difference]: Finished difference Result 76 states and 84 transitions. [2022-11-16 20:10:23,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-16 20:10:23,785 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 16 states have (on average 1.9375) internal successors, (31), 14 states have internal predecessors, (31), 9 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (24), 11 states have call predecessors, (24), 9 states have call successors, (24) Word has length 76 [2022-11-16 20:10:23,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:10:23,786 INFO L225 Difference]: With dead ends: 76 [2022-11-16 20:10:23,786 INFO L226 Difference]: Without dead ends: 0 [2022-11-16 20:10:23,787 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 192 SyntacticMatches, 4 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 426 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=193, Invalid=1139, Unknown=0, NotChecked=0, Total=1332 [2022-11-16 20:10:23,788 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 31 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 430 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-16 20:10:23,788 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 84 Invalid, 510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 430 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-16 20:10:23,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-16 20:10:23,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-16 20:10:23,789 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 20:10:23,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-16 20:10:23,789 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 76 [2022-11-16 20:10:23,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:10:23,790 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-16 20:10:23,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 16 states have (on average 1.9375) internal successors, (31), 14 states have internal predecessors, (31), 9 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (24), 11 states have call predecessors, (24), 9 states have call successors, (24) [2022-11-16 20:10:23,790 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-16 20:10:23,790 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-16 20:10:23,793 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-16 20:10:23,802 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890e9417-bfb7-450c-9f7f-11657e1ad66e/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-16 20:10:23,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890e9417-bfb7-450c-9f7f-11657e1ad66e/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 20:10:24,001 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-16 20:10:42,048 WARN L233 SmtUtils]: Spent 17.83s on a formula simplification. DAG size of input: 130 DAG size of output: 79 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2022-11-16 20:11:06,096 WARN L233 SmtUtils]: Spent 24.04s on a formula simplification. DAG size of input: 122 DAG size of output: 89 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2022-11-16 20:11:35,609 WARN L233 SmtUtils]: Spent 25.34s on a formula simplification. DAG size of input: 122 DAG size of output: 89 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2022-11-16 20:11:42,770 WARN L233 SmtUtils]: Spent 7.08s on a formula simplification. DAG size of input: 130 DAG size of output: 79 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2022-11-16 20:11:43,737 INFO L895 garLoopResultBuilder]: At program point L35-2(lines 35 52) the Hoare annotation is: (let ((.cse0 (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse1 (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse2 (select |#memory_int| 1))) (and (= (select |#length| 3) 12) (not (= (ite (<= 1 |ULTIMATE.start_main_~y~0#1|) 1 0) 0)) (= (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~s~0#1|) (+ (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~r~0#1|) 1)) (not (= (ite (and (<= |ULTIMATE.start_main_~y~0#1| 5) (<= 0 |ULTIMATE.start_main_~y~0#1|)) 1 0) 0)) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (= (+ .cse0 |ULTIMATE.start_main_~b~0#1| .cse1) (+ |ULTIMATE.start_main_~a~0#1| (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|))) (<= 1 |ULTIMATE.start_main_~x~0#1|) (= (select |#valid| 1) 1) (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= (select .cse2 0) 48) (= (+ .cse0 .cse1) |ULTIMATE.start_main_~a~0#1|) (= 10 (select |#length| 2)) (not (= (ite (and (<= |ULTIMATE.start_main_~x~0#1| 5) (<= 0 |ULTIMATE.start_main_~x~0#1|)) 1 0) 0)) (= (select .cse2 1) 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) [2022-11-16 20:11:43,737 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-16 20:11:43,737 INFO L895 garLoopResultBuilder]: At program point L25(line 25) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (and (= (select |#length| 3) 12) (not (= (ite (and (<= |ULTIMATE.start_main_~y~0#1| 5) (<= 0 |ULTIMATE.start_main_~y~0#1|)) 1 0) 0)) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (<= 1 |ULTIMATE.start_main_~x~0#1|) (= (select |#valid| 1) 1) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= (select .cse0 0) 48) (= 10 (select |#length| 2)) (not (= (ite (and (<= |ULTIMATE.start_main_~x~0#1| 5) (<= 0 |ULTIMATE.start_main_~x~0#1|)) 1 0) 0)) (= (select .cse0 1) 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) [2022-11-16 20:11:43,738 INFO L895 garLoopResultBuilder]: At program point L56(line 56) the Hoare annotation is: (let ((.cse18 (select |#memory_int| 1))) (let ((.cse0 (= (select |#length| 3) 12)) (.cse7 (<= 1 |ULTIMATE.start_main_~x~0#1|)) (.cse1 (not (= (ite (<= 1 |ULTIMATE.start_main_~y~0#1|) 1 0) 0))) (.cse2 (not (= (ite (and (<= |ULTIMATE.start_main_~y~0#1| 5) (<= 0 |ULTIMATE.start_main_~y~0#1|)) 1 0) 0))) (.cse3 (= 2 (select |#length| 1))) (.cse6 (= (select |#valid| 3) 1)) (.cse8 (= (select |#valid| 1) 1)) (.cse9 (= (select |#valid| 0) 0)) (.cse10 (= (select |#valid| 2) 1)) (.cse11 (= |#NULL.offset| 0)) (.cse12 (= (select .cse18 0) 48)) (.cse13 (= 10 (select |#length| 2))) (.cse14 (not (= (ite (and (<= |ULTIMATE.start_main_~x~0#1| 5) (<= 0 |ULTIMATE.start_main_~x~0#1|)) 1 0) 0))) (.cse15 (= (select .cse18 1) 0)) (.cse16 (< 0 |#StackHeapBarrier|)) (.cse17 (= |#NULL.base| 0))) (or (let ((.cse4 (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse5 (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|))) (and .cse0 .cse1 (= (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~s~0#1|) (+ (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~r~0#1|) 1)) .cse2 .cse3 (= (+ .cse4 .cse5) |ULTIMATE.start_main_~b~0#1|) .cse6 (= (+ (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~b~0#1| (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|)) (+ |ULTIMATE.start_main_~a~0#1| .cse4 .cse5)) .cse7 .cse8 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|) .cse9 .cse10 .cse11 .cse12 .cse13 .cse14 .cse15 .cse16 .cse17)) (and .cse0 (not (= 0 (ite .cse7 1 0))) .cse1 (= |ULTIMATE.start_main_~p~0#1| 1) (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|) .cse2 .cse3 .cse6 (= |ULTIMATE.start_main_~r~0#1| 0) (= |ULTIMATE.start_main_~q~0#1| 0) .cse8 .cse9 .cse10 .cse11 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|) .cse12 .cse13 .cse14 .cse15 (= |ULTIMATE.start_main_~s~0#1| 1) .cse16 .cse17)))) [2022-11-16 20:11:43,738 INFO L895 garLoopResultBuilder]: At program point L54(line 54) the Hoare annotation is: (let ((.cse0 (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse1 (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse2 (select |#memory_int| 1))) (and (= (select |#length| 3) 12) (not (= (ite (<= 1 |ULTIMATE.start_main_~y~0#1|) 1 0) 0)) (= (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~s~0#1|) (+ (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~r~0#1|) 1)) (not (= (ite (and (<= |ULTIMATE.start_main_~y~0#1| 5) (<= 0 |ULTIMATE.start_main_~y~0#1|)) 1 0) 0)) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (= (+ .cse0 |ULTIMATE.start_main_~b~0#1| .cse1) (+ |ULTIMATE.start_main_~a~0#1| (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|))) (<= 1 |ULTIMATE.start_main_~x~0#1|) (= (select |#valid| 1) 1) (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= (select .cse2 0) 48) (= (+ .cse0 .cse1) |ULTIMATE.start_main_~a~0#1|) (= 10 (select |#length| 2)) (not (= (ite (and (<= |ULTIMATE.start_main_~x~0#1| 5) (<= 0 |ULTIMATE.start_main_~x~0#1|)) 1 0) 0)) (= (select .cse2 1) 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) [2022-11-16 20:11:43,738 INFO L899 garLoopResultBuilder]: For program point L38(lines 35 52) no Hoare annotation was computed. [2022-11-16 20:11:43,739 INFO L895 garLoopResultBuilder]: At program point L36(line 36) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (and (= (select |#length| 3) 12) (not (= (ite (<= 1 |ULTIMATE.start_main_~y~0#1|) 1 0) 0)) (= (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~s~0#1|) (+ (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~r~0#1|) 1)) (not (= (ite (and (<= |ULTIMATE.start_main_~y~0#1| 5) (<= 0 |ULTIMATE.start_main_~y~0#1|)) 1 0) 0)) (= 2 (select |#length| 1)) (= (+ (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|)) |ULTIMATE.start_main_~b~0#1|) (= (select |#valid| 3) 1) (<= 1 |ULTIMATE.start_main_~x~0#1|) (= (select |#valid| 1) 1) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= (select .cse0 0) 48) (= (+ (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|)) |ULTIMATE.start_main_~a~0#1|) (= 10 (select |#length| 2)) (not (= (ite (and (<= |ULTIMATE.start_main_~x~0#1| 5) (<= 0 |ULTIMATE.start_main_~x~0#1|)) 1 0) 0)) (= (select .cse0 1) 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) [2022-11-16 20:11:43,739 INFO L895 garLoopResultBuilder]: At program point L36-1(line 36) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (and (= (select |#length| 3) 12) (not (= (ite (<= 1 |ULTIMATE.start_main_~y~0#1|) 1 0) 0)) (= (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~s~0#1|) (+ (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~r~0#1|) 1)) (not (= (ite (and (<= |ULTIMATE.start_main_~y~0#1| 5) (<= 0 |ULTIMATE.start_main_~y~0#1|)) 1 0) 0)) (= 2 (select |#length| 1)) (= (+ (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|)) |ULTIMATE.start_main_~b~0#1|) (= (select |#valid| 3) 1) (<= 1 |ULTIMATE.start_main_~x~0#1|) (= (select |#valid| 1) 1) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= (select .cse0 0) 48) (= (+ (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|)) |ULTIMATE.start_main_~a~0#1|) (= 10 (select |#length| 2)) (not (= (ite (and (<= |ULTIMATE.start_main_~x~0#1| 5) (<= 0 |ULTIMATE.start_main_~x~0#1|)) 1 0) 0)) (= (select .cse0 1) 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) [2022-11-16 20:11:43,739 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-16 20:11:43,739 INFO L899 garLoopResultBuilder]: For program point L26(line 26) no Hoare annotation was computed. [2022-11-16 20:11:43,740 INFO L902 garLoopResultBuilder]: At program point L57(line 57) the Hoare annotation is: true [2022-11-16 20:11:43,740 INFO L895 garLoopResultBuilder]: At program point L24(line 24) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (and (= (select |#length| 3) 12) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (= (select |#valid| 1) 1) (= (select |#valid| 0) 0) (<= 0 (+ |ULTIMATE.start_main_~y~0#1| 2147483648)) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= (select .cse0 0) 48) (<= |ULTIMATE.start_main_~y~0#1| 2147483647) (= 10 (select |#length| 2)) (not (= (ite (and (<= |ULTIMATE.start_main_~x~0#1| 5) (<= 0 |ULTIMATE.start_main_~x~0#1|)) 1 0) 0)) (= (select .cse0 1) 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) [2022-11-16 20:11:43,740 INFO L895 garLoopResultBuilder]: At program point L24-1(line 24) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (and (= (select |#length| 3) 12) (not (= (ite (and (<= |ULTIMATE.start_main_~y~0#1| 5) (<= 0 |ULTIMATE.start_main_~y~0#1|)) 1 0) 0)) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (= (select |#valid| 1) 1) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= (select .cse0 0) 48) (= 10 (select |#length| 2)) (not (= (ite (and (<= |ULTIMATE.start_main_~x~0#1| 5) (<= 0 |ULTIMATE.start_main_~x~0#1|)) 1 0) 0)) (= (select .cse0 1) 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) [2022-11-16 20:11:43,740 INFO L895 garLoopResultBuilder]: At program point L55(line 55) the Hoare annotation is: (let ((.cse18 (select |#memory_int| 1))) (let ((.cse0 (= (select |#length| 3) 12)) (.cse7 (<= 1 |ULTIMATE.start_main_~x~0#1|)) (.cse1 (not (= (ite (<= 1 |ULTIMATE.start_main_~y~0#1|) 1 0) 0))) (.cse2 (not (= (ite (and (<= |ULTIMATE.start_main_~y~0#1| 5) (<= 0 |ULTIMATE.start_main_~y~0#1|)) 1 0) 0))) (.cse3 (= 2 (select |#length| 1))) (.cse6 (= (select |#valid| 3) 1)) (.cse8 (= (select |#valid| 1) 1)) (.cse9 (= (select |#valid| 0) 0)) (.cse10 (= (select |#valid| 2) 1)) (.cse11 (= |#NULL.offset| 0)) (.cse12 (= (select .cse18 0) 48)) (.cse13 (= 10 (select |#length| 2))) (.cse14 (not (= (ite (and (<= |ULTIMATE.start_main_~x~0#1| 5) (<= 0 |ULTIMATE.start_main_~x~0#1|)) 1 0) 0))) (.cse15 (= (select .cse18 1) 0)) (.cse16 (< 0 |#StackHeapBarrier|)) (.cse17 (= |#NULL.base| 0))) (or (let ((.cse4 (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse5 (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|))) (and .cse0 .cse1 (= (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~s~0#1|) (+ (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~r~0#1|) 1)) .cse2 .cse3 (= (+ .cse4 .cse5) |ULTIMATE.start_main_~b~0#1|) .cse6 (= (+ (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~b~0#1| (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|)) (+ |ULTIMATE.start_main_~a~0#1| .cse4 .cse5)) .cse7 .cse8 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|) .cse9 .cse10 .cse11 .cse12 .cse13 .cse14 .cse15 .cse16 .cse17)) (and .cse0 (not (= 0 (ite .cse7 1 0))) .cse1 (= |ULTIMATE.start_main_~p~0#1| 1) (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|) .cse2 .cse3 .cse6 (= |ULTIMATE.start_main_~r~0#1| 0) (= |ULTIMATE.start_main_~q~0#1| 0) .cse8 .cse9 .cse10 .cse11 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|) .cse12 .cse13 .cse14 .cse15 (= |ULTIMATE.start_main_~s~0#1| 1) .cse16 .cse17)))) [2022-11-16 20:11:43,741 INFO L895 garLoopResultBuilder]: At program point L22(line 22) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (and (= (select |#length| 3) 12) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (<= 0 (+ |ULTIMATE.start_main_~x~0#1| 2147483648)) (= (select |#valid| 1) 1) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= (select .cse0 0) 48) (= 10 (select |#length| 2)) (= (select .cse0 1) 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) [2022-11-16 20:11:43,741 INFO L899 garLoopResultBuilder]: For program point L22-1(line 22) no Hoare annotation was computed. [2022-11-16 20:11:43,741 INFO L895 garLoopResultBuilder]: At program point L43-2(lines 35 52) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (and (= (select |#length| 3) 12) (not (= (ite (<= 1 |ULTIMATE.start_main_~y~0#1|) 1 0) 0)) (= (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~s~0#1|) (+ (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~r~0#1|) 1)) (not (= (ite (and (<= |ULTIMATE.start_main_~y~0#1| 5) (<= 0 |ULTIMATE.start_main_~y~0#1|)) 1 0) 0)) (= 2 (select |#length| 1)) (= (+ (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|)) |ULTIMATE.start_main_~b~0#1|) (= (select |#valid| 3) 1) (<= 1 |ULTIMATE.start_main_~x~0#1|) (= (select |#valid| 1) 1) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= (select .cse0 0) 48) (= (+ (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|)) |ULTIMATE.start_main_~a~0#1|) (= 10 (select |#length| 2)) (not (= (ite (and (<= |ULTIMATE.start_main_~x~0#1| 5) (<= 0 |ULTIMATE.start_main_~x~0#1|)) 1 0) 0)) (= (select .cse0 1) 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) [2022-11-16 20:11:43,742 INFO L895 garLoopResultBuilder]: At program point L37(line 37) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (and (= (select |#length| 3) 12) (not (= 0 (ite (<= 1 |ULTIMATE.start_main_~x~0#1|) 1 0))) (not (= (ite (<= 1 |ULTIMATE.start_main_~y~0#1|) 1 0) 0)) (= (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~s~0#1|) (+ (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~r~0#1|) 1)) (not (= (ite (and (<= |ULTIMATE.start_main_~y~0#1| 5) (<= 0 |ULTIMATE.start_main_~y~0#1|)) 1 0) 0)) (= 2 (select |#length| 1)) (= (+ (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|)) |ULTIMATE.start_main_~b~0#1|) (= (select |#valid| 3) 1) (= (select |#valid| 1) 1) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= (select .cse0 0) 48) (= (+ (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|)) |ULTIMATE.start_main_~a~0#1|) (= 10 (select |#length| 2)) (not (= (ite (and (<= |ULTIMATE.start_main_~x~0#1| 5) (<= 0 |ULTIMATE.start_main_~x~0#1|)) 1 0) 0)) (= (select .cse0 1) 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) [2022-11-16 20:11:43,742 INFO L902 garLoopResultBuilder]: At program point assume_abort_if_notENTRY(lines 7 9) the Hoare annotation is: true [2022-11-16 20:11:43,742 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 7 9) no Hoare annotation was computed. [2022-11-16 20:11:43,742 INFO L902 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 10 16) the Hoare annotation is: true [2022-11-16 20:11:43,742 INFO L899 garLoopResultBuilder]: For program point L12(lines 12 13) no Hoare annotation was computed. [2022-11-16 20:11:43,742 INFO L899 garLoopResultBuilder]: For program point L11(lines 11 14) no Hoare annotation was computed. [2022-11-16 20:11:43,743 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 10 16) no Hoare annotation was computed. [2022-11-16 20:11:43,743 INFO L899 garLoopResultBuilder]: For program point L11-2(lines 10 16) no Hoare annotation was computed. [2022-11-16 20:11:43,743 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2022-11-16 20:11:43,746 INFO L444 BasicCegarLoop]: Path program histogram: [4, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 20:11:43,749 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-16 20:11:43,766 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 08:11:43 BoogieIcfgContainer [2022-11-16 20:11:43,766 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-16 20:11:43,766 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-16 20:11:43,767 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-16 20:11:43,767 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-16 20:11:43,767 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 08:09:40" (3/4) ... [2022-11-16 20:11:43,770 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-16 20:11:43,776 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2022-11-16 20:11:43,776 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2022-11-16 20:11:43,780 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2022-11-16 20:11:43,780 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2022-11-16 20:11:43,780 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-11-16 20:11:43,781 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-16 20:11:43,813 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890e9417-bfb7-450c-9f7f-11657e1ad66e/bin/utaipan-Xvt2sAort0/witness.graphml [2022-11-16 20:11:43,814 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-16 20:11:43,814 INFO L158 Benchmark]: Toolchain (without parser) took 123640.92ms. Allocated memory was 119.5MB in the beginning and 375.4MB in the end (delta: 255.9MB). Free memory was 80.4MB in the beginning and 264.8MB in the end (delta: -184.4MB). Peak memory consumption was 71.5MB. Max. memory is 16.1GB. [2022-11-16 20:11:43,815 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 119.5MB. Free memory is still 96.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 20:11:43,815 INFO L158 Benchmark]: CACSL2BoogieTranslator took 295.65ms. Allocated memory is still 119.5MB. Free memory was 80.2MB in the beginning and 95.7MB in the end (delta: -15.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-16 20:11:43,815 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.65ms. Allocated memory is still 119.5MB. Free memory was 95.7MB in the beginning and 94.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 20:11:43,816 INFO L158 Benchmark]: Boogie Preprocessor took 21.61ms. Allocated memory is still 119.5MB. Free memory was 94.1MB in the beginning and 93.0MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 20:11:43,816 INFO L158 Benchmark]: RCFGBuilder took 379.23ms. Allocated memory is still 119.5MB. Free memory was 93.0MB in the beginning and 79.9MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-16 20:11:43,816 INFO L158 Benchmark]: TraceAbstraction took 122855.18ms. Allocated memory was 119.5MB in the beginning and 375.4MB in the end (delta: 255.9MB). Free memory was 79.4MB in the beginning and 267.9MB in the end (delta: -188.5MB). Peak memory consumption was 212.8MB. Max. memory is 16.1GB. [2022-11-16 20:11:43,817 INFO L158 Benchmark]: Witness Printer took 47.31ms. Allocated memory is still 375.4MB. Free memory was 267.9MB in the beginning and 264.8MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 20:11:43,818 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 119.5MB. Free memory is still 96.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 295.65ms. Allocated memory is still 119.5MB. Free memory was 80.2MB in the beginning and 95.7MB in the end (delta: -15.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 34.65ms. Allocated memory is still 119.5MB. Free memory was 95.7MB in the beginning and 94.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 21.61ms. Allocated memory is still 119.5MB. Free memory was 94.1MB in the beginning and 93.0MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 379.23ms. Allocated memory is still 119.5MB. Free memory was 93.0MB in the beginning and 79.9MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 122855.18ms. Allocated memory was 119.5MB in the beginning and 375.4MB in the end (delta: 255.9MB). Free memory was 79.4MB in the beginning and 267.9MB in the end (delta: -188.5MB). Peak memory consumption was 212.8MB. Max. memory is 16.1GB. * Witness Printer took 47.31ms. Allocated memory is still 375.4MB. Free memory was 267.9MB in the beginning and 264.8MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 13]: 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 3 procedures, 26 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 122.8s, OverallIterations: 11, TraceHistogramMax: 11, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 8.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 79.7s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 239 SdHoareTripleChecker+Valid, 4.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 186 mSDsluCounter, 920 SdHoareTripleChecker+Invalid, 3.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 16 IncrementalHoareTripleChecker+Unchecked, 643 mSDsCounter, 282 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1965 IncrementalHoareTripleChecker+Invalid, 2263 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 282 mSolverCounterUnsat, 277 mSDtfsCounter, 1965 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1105 GetRequests, 852 SyntacticMatches, 39 SemanticMatches, 214 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2094 ImplicationChecksByTransitivity, 14.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=67occurred in iteration=9, InterpolantAutomatonStates: 105, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 11 MinimizatonAttempts, 27 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 15 LocationsWithAnnotation, 53 PreInvPairs, 84 NumberOfFragments, 1609 HoareAnnotationTreeSize, 53 FomulaSimplifications, 200 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 15 FomulaSimplificationsInter, 19774 FormulaSimplificationTreeSizeReductionInter, 79.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 7.4s InterpolantComputationTime, 432 NumberOfCodeBlocks, 413 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 759 ConstructedInterpolants, 2 QuantifiedInterpolants, 4701 SizeOfPredicates, 54 NumberOfNonLiveVariables, 1161 ConjunctsInSsa, 248 ConjunctsInUnsatCore, 19 InterpolantComputations, 4 PerfectInterpolantSequences, 1075/1194 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: OVERALL_TIME: 1.4s, ICFG_INTERPRETER_ENTERED_PROCEDURES: 6, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 49, DAG_INTERPRETER_EARLY_EXITS: 2, TOOLS_POST_APPLICATIONS: 27, TOOLS_POST_TIME: 0.1s, TOOLS_POST_CALL_APPLICATIONS: 44, TOOLS_POST_CALL_TIME: 0.6s, TOOLS_POST_RETURN_APPLICATIONS: 28, TOOLS_POST_RETURN_TIME: 0.2s, TOOLS_QUANTIFIERELIM_APPLICATIONS: 99, TOOLS_QUANTIFIERELIM_TIME: 0.8s, TOOLS_QUANTIFIERELIM_MAX_TIME: 0.0s, FLUID_QUERY_TIME: 0.0s, FLUID_QUERIES: 122, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 54, DOMAIN_JOIN_TIME: 0.4s, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME: 0.0s, DOMAIN_WIDEN_APPLICATIONS: 0, DOMAIN_WIDEN_TIME: 0.0s, DOMAIN_ISSUBSETEQ_APPLICATIONS: 0, DOMAIN_ISSUBSETEQ_TIME: 0.0s, DOMAIN_ISBOTTOM_APPLICATIONS: 49, DOMAIN_ISBOTTOM_TIME: 0.1s, LOOP_SUMMARIZER_APPLICATIONS: 0, LOOP_SUMMARIZER_CACHE_MISSES: 0, LOOP_SUMMARIZER_OVERALL_TIME: 0.0s, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME: 0.0s, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 0, CALL_SUMMARIZER_APPLICATIONS: 28, CALL_SUMMARIZER_CACHE_MISSES: 4, CALL_SUMMARIZER_OVERALL_TIME: 0.0s, CALL_SUMMARIZER_NEW_COMPUTATION_TIME: 0.0s, PROCEDURE_GRAPH_BUILDER_TIME: 0.0s, PATH_EXPR_TIME: 0.0s, REGEX_TO_DAG_TIME: 0.0s, DAG_COMPRESSION_TIME: 0.0s, DAG_COMPRESSION_PROCESSED_NODES: 564, DAG_COMPRESSION_RETAINED_NODES: 130, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: (((((((((((((((((unknown-#length-unknown[3] == 12 && !((if 1 <= y then 1 else 0) == 0)) && p * s == q * r + 1) && !((if y <= 5 && 0 <= y then 1 else 0) == 0)) && 2 == unknown-#length-unknown[1]) && s * y + q * x == b) && \valid[3] == 1) && 1 <= x) && \valid[1] == 1) && \valid[0] == 0) && \valid[2] == 1) && #NULL == 0) && unknown-#memory_int-unknown[1][0] == 48) && r * y + p * x == a) && 10 == unknown-#length-unknown[2]) && !((if x <= 5 && 0 <= x then 1 else 0) == 0)) && unknown-#memory_int-unknown[1][1] == 0) && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0 - InvariantResult [Line: 57]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2022-11-16 20:11:43,859 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890e9417-bfb7-450c-9f7f-11657e1ad66e/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE