./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/fermat1-ll_valuebound50.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1f649a-067d-4ad4-a70c-07542b04c4d7/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1f649a-067d-4ad4-a70c-07542b04c4d7/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1f649a-067d-4ad4-a70c-07542b04c4d7/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1f649a-067d-4ad4-a70c-07542b04c4d7/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/fermat1-ll_valuebound50.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1f649a-067d-4ad4-a70c-07542b04c4d7/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1f649a-067d-4ad4-a70c-07542b04c4d7/bin/utaipan-7li7fVZpFI --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0ac0f213d1d000e527ab073eb0dd4288784176d966909606abb71d9dc425fd71 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-03 03:32:27,666 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 03:32:27,668 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 03:32:27,724 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 03:32:27,725 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 03:32:27,729 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 03:32:27,731 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 03:32:27,734 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 03:32:27,739 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 03:32:27,745 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 03:32:27,746 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 03:32:27,749 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 03:32:27,750 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 03:32:27,753 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 03:32:27,755 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 03:32:27,758 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 03:32:27,759 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 03:32:27,760 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 03:32:27,762 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 03:32:27,764 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 03:32:27,766 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 03:32:27,767 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 03:32:27,769 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 03:32:27,770 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 03:32:27,774 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 03:32:27,774 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 03:32:27,775 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 03:32:27,776 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 03:32:27,776 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 03:32:27,777 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 03:32:27,778 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 03:32:27,779 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 03:32:27,780 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 03:32:27,781 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 03:32:27,783 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 03:32:27,784 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 03:32:27,785 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 03:32:27,785 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 03:32:27,785 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 03:32:27,786 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 03:32:27,787 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 03:32:27,789 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1f649a-067d-4ad4-a70c-07542b04c4d7/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-03 03:32:27,835 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 03:32:27,836 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 03:32:27,837 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 03:32:27,837 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 03:32:27,838 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 03:32:27,839 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 03:32:27,839 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 03:32:27,840 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 03:32:27,840 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 03:32:27,840 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 03:32:27,842 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 03:32:27,842 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 03:32:27,842 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 03:32:27,843 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 03:32:27,843 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 03:32:27,844 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 03:32:27,844 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 03:32:27,844 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 03:32:27,845 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 03:32:27,846 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 03:32:27,846 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 03:32:27,846 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 03:32:27,847 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 03:32:27,849 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 03:32:27,849 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 03:32:27,849 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 03:32:27,850 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 03:32:27,850 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 03:32:27,850 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 03:32:27,851 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 03:32:27,851 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 03:32:27,852 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 03:32:27,852 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:32:27,853 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 03:32:27,854 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 03:32:27,854 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 03:32:27,854 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 03:32:27,855 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 03:32:27,855 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 03:32:27,855 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 03:32:27,856 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 03:32:27,856 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_3f1f649a-067d-4ad4-a70c-07542b04c4d7/bin/utaipan-7li7fVZpFI/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1f649a-067d-4ad4-a70c-07542b04c4d7/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0ac0f213d1d000e527ab073eb0dd4288784176d966909606abb71d9dc425fd71 [2022-11-03 03:32:28,201 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 03:32:28,244 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 03:32:28,247 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 03:32:28,249 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 03:32:28,249 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 03:32:28,251 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1f649a-067d-4ad4-a70c-07542b04c4d7/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/nla-digbench-scaling/fermat1-ll_valuebound50.c [2022-11-03 03:32:28,330 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1f649a-067d-4ad4-a70c-07542b04c4d7/bin/utaipan-7li7fVZpFI/data/8f8ea51c9/374496116e974e1881d89a14b1b44719/FLAGe50acbce1 [2022-11-03 03:32:28,929 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 03:32:28,931 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1f649a-067d-4ad4-a70c-07542b04c4d7/sv-benchmarks/c/nla-digbench-scaling/fermat1-ll_valuebound50.c [2022-11-03 03:32:28,939 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1f649a-067d-4ad4-a70c-07542b04c4d7/bin/utaipan-7li7fVZpFI/data/8f8ea51c9/374496116e974e1881d89a14b1b44719/FLAGe50acbce1 [2022-11-03 03:32:29,261 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1f649a-067d-4ad4-a70c-07542b04c4d7/bin/utaipan-7li7fVZpFI/data/8f8ea51c9/374496116e974e1881d89a14b1b44719 [2022-11-03 03:32:29,267 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 03:32:29,269 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 03:32:29,273 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 03:32:29,274 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 03:32:29,277 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 03:32:29,278 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:32:29" (1/1) ... [2022-11-03 03:32:29,280 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39765399 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:32:29, skipping insertion in model container [2022-11-03 03:32:29,281 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:32:29" (1/1) ... [2022-11-03 03:32:29,288 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 03:32:29,307 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 03:32:29,527 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1f649a-067d-4ad4-a70c-07542b04c4d7/sv-benchmarks/c/nla-digbench-scaling/fermat1-ll_valuebound50.c[535,548] [2022-11-03 03:32:29,550 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:32:29,559 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 03:32:29,570 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1f649a-067d-4ad4-a70c-07542b04c4d7/sv-benchmarks/c/nla-digbench-scaling/fermat1-ll_valuebound50.c[535,548] [2022-11-03 03:32:29,580 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:32:29,593 INFO L208 MainTranslator]: Completed translation [2022-11-03 03:32:29,594 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:32:29 WrapperNode [2022-11-03 03:32:29,594 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 03:32:29,595 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 03:32:29,596 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 03:32:29,596 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 03:32:29,604 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:32:29" (1/1) ... [2022-11-03 03:32:29,610 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:32:29" (1/1) ... [2022-11-03 03:32:29,630 INFO L138 Inliner]: procedures = 14, calls = 15, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 56 [2022-11-03 03:32:29,631 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 03:32:29,631 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 03:32:29,632 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 03:32:29,632 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 03:32:29,641 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:32:29" (1/1) ... [2022-11-03 03:32:29,641 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:32:29" (1/1) ... [2022-11-03 03:32:29,643 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:32:29" (1/1) ... [2022-11-03 03:32:29,643 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:32:29" (1/1) ... [2022-11-03 03:32:29,646 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:32:29" (1/1) ... [2022-11-03 03:32:29,651 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:32:29" (1/1) ... [2022-11-03 03:32:29,652 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:32:29" (1/1) ... [2022-11-03 03:32:29,653 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:32:29" (1/1) ... [2022-11-03 03:32:29,654 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 03:32:29,655 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 03:32:29,655 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 03:32:29,656 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 03:32:29,663 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:32:29" (1/1) ... [2022-11-03 03:32:29,671 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:32:29,686 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1f649a-067d-4ad4-a70c-07542b04c4d7/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:32:29,702 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1f649a-067d-4ad4-a70c-07542b04c4d7/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 03:32:29,712 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1f649a-067d-4ad4-a70c-07542b04c4d7/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 03:32:29,747 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 03:32:29,747 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-03 03:32:29,747 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-03 03:32:29,747 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 03:32:29,747 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 03:32:29,748 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 03:32:29,748 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-03 03:32:29,748 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-03 03:32:29,814 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 03:32:29,817 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 03:32:30,069 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 03:32:30,120 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 03:32:30,120 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-03 03:32:30,123 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:32:30 BoogieIcfgContainer [2022-11-03 03:32:30,123 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 03:32:30,125 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 03:32:30,125 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 03:32:30,137 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 03:32:30,138 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 03:32:29" (1/3) ... [2022-11-03 03:32:30,139 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21b22599 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:32:30, skipping insertion in model container [2022-11-03 03:32:30,140 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:32:29" (2/3) ... [2022-11-03 03:32:30,140 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21b22599 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:32:30, skipping insertion in model container [2022-11-03 03:32:30,141 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:32:30" (3/3) ... [2022-11-03 03:32:30,142 INFO L112 eAbstractionObserver]: Analyzing ICFG fermat1-ll_valuebound50.c [2022-11-03 03:32:30,163 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 03:32:30,163 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 03:32:30,253 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 03:32:30,268 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;@7d7133a5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 03:32:30,268 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 03:32:30,273 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 16 states have internal predecessors, (23), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-03 03:32:30,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-03 03:32:30,284 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:32:30,285 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:32:30,287 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:32:30,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:32:30,296 INFO L85 PathProgramCache]: Analyzing trace with hash 1333631252, now seen corresponding path program 1 times [2022-11-03 03:32:30,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:32:30,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415401876] [2022-11-03 03:32:30,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:32:30,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:32:30,421 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 03:32:30,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [35465106] [2022-11-03 03:32:30,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:32:30,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:32:30,423 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1f649a-067d-4ad4-a70c-07542b04c4d7/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:32:30,426 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1f649a-067d-4ad4-a70c-07542b04c4d7/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:32:30,434 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1f649a-067d-4ad4-a70c-07542b04c4d7/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 03:32:30,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:32:30,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-03 03:32:30,564 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:32:30,896 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-03 03:32:30,896 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:32:30,897 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:32:30,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415401876] [2022-11-03 03:32:30,897 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-03 03:32:30,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [35465106] [2022-11-03 03:32:30,899 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [35465106] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:32:30,899 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:32:30,899 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 03:32:30,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602945275] [2022-11-03 03:32:30,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:32:30,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:32:30,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:32:30,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:32:30,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:32:30,947 INFO L87 Difference]: Start difference. First operand has 27 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 16 states have internal predecessors, (23), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) 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) [2022-11-03 03:32:34,860 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.77s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-03 03:32:34,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:32:34,888 INFO L93 Difference]: Finished difference Result 61 states and 99 transitions. [2022-11-03 03:32:34,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 03:32:34,891 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 [2022-11-03 03:32:34,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:32:34,900 INFO L225 Difference]: With dead ends: 61 [2022-11-03 03:32:34,900 INFO L226 Difference]: Without dead ends: 39 [2022-11-03 03:32:34,902 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-03 03:32:34,906 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 12 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-11-03 03:32:34,907 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 83 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-11-03 03:32:34,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-11-03 03:32:34,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 38. [2022-11-03 03:32:34,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 23 states have (on average 1.3043478260869565) internal successors, (30), 24 states have internal predecessors, (30), 11 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-03 03:32:34,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 51 transitions. [2022-11-03 03:32:34,956 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 51 transitions. Word has length 20 [2022-11-03 03:32:34,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:32:34,957 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 51 transitions. [2022-11-03 03:32:34,957 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) [2022-11-03 03:32:34,958 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 51 transitions. [2022-11-03 03:32:34,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-03 03:32:34,960 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:32:34,960 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, 1] [2022-11-03 03:32:34,983 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1f649a-067d-4ad4-a70c-07542b04c4d7/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-03 03:32:35,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1f649a-067d-4ad4-a70c-07542b04c4d7/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-11-03 03:32:35,162 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:32:35,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:32:35,163 INFO L85 PathProgramCache]: Analyzing trace with hash 1820027827, now seen corresponding path program 1 times [2022-11-03 03:32:35,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:32:35,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091359845] [2022-11-03 03:32:35,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:32:35,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:32:35,182 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 03:32:35,183 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1574874863] [2022-11-03 03:32:35,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:32:35,183 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:32:35,183 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1f649a-067d-4ad4-a70c-07542b04c4d7/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:32:35,185 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1f649a-067d-4ad4-a70c-07542b04c4d7/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:32:35,210 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1f649a-067d-4ad4-a70c-07542b04c4d7/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-03 03:32:35,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:32:35,245 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-03 03:32:35,249 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:32:35,356 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-03 03:32:35,356 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:32:35,570 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-03 03:32:35,571 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:32:35,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091359845] [2022-11-03 03:32:35,572 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-03 03:32:35,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1574874863] [2022-11-03 03:32:35,573 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1574874863] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:32:35,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1405951267] [2022-11-03 03:32:35,604 INFO L159 IcfgInterpreter]: Started Sifa with 19 locations of interest [2022-11-03 03:32:35,605 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 03:32:35,609 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 03:32:35,615 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 03:32:35,616 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 03:32:36,362 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 38 for LOIs [2022-11-03 03:32:36,376 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 59 for LOIs [2022-11-03 03:32:36,408 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 03:32:38,436 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1405951267] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:32:38,436 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 03:32:38,436 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [8, 8] total 22 [2022-11-03 03:32:38,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108601172] [2022-11-03 03:32:38,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:32:38,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-03 03:32:38,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:32:38,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-03 03:32:38,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=362, Unknown=0, NotChecked=0, Total=462 [2022-11-03 03:32:38,440 INFO L87 Difference]: Start difference. First operand 38 states and 51 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, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-03 03:32:38,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:32:38,890 INFO L93 Difference]: Finished difference Result 58 states and 75 transitions. [2022-11-03 03:32:38,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-03 03:32:38,892 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, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Word has length 26 [2022-11-03 03:32:38,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:32:38,896 INFO L225 Difference]: With dead ends: 58 [2022-11-03 03:32:38,896 INFO L226 Difference]: Without dead ends: 51 [2022-11-03 03:32:38,897 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 51 SyntacticMatches, 5 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=100, Invalid=362, Unknown=0, NotChecked=0, Total=462 [2022-11-03 03:32:38,899 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 70 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 03:32:38,902 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 42 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 03:32:38,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2022-11-03 03:32:38,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2022-11-03 03:32:38,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 32 states have (on average 1.28125) internal successors, (41), 33 states have internal predecessors, (41), 14 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-03 03:32:38,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 68 transitions. [2022-11-03 03:32:38,955 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 68 transitions. Word has length 26 [2022-11-03 03:32:38,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:32:38,956 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 68 transitions. [2022-11-03 03:32:38,956 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, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-03 03:32:38,956 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 68 transitions. [2022-11-03 03:32:38,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-03 03:32:38,957 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:32:38,958 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:32:38,988 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1f649a-067d-4ad4-a70c-07542b04c4d7/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-03 03:32:39,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1f649a-067d-4ad4-a70c-07542b04c4d7/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:32:39,175 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:32:39,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:32:39,176 INFO L85 PathProgramCache]: Analyzing trace with hash -1140063161, now seen corresponding path program 1 times [2022-11-03 03:32:39,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:32:39,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891006205] [2022-11-03 03:32:39,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:32:39,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:32:39,189 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 03:32:39,189 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1725499838] [2022-11-03 03:32:39,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:32:39,190 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:32:39,190 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1f649a-067d-4ad4-a70c-07542b04c4d7/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:32:39,192 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1f649a-067d-4ad4-a70c-07542b04c4d7/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:32:39,211 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1f649a-067d-4ad4-a70c-07542b04c4d7/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-03 03:32:39,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:32:39,264 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-03 03:32:39,266 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:32:43,511 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-03 03:32:43,512 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:32:43,682 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-03 03:32:43,682 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:32:43,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891006205] [2022-11-03 03:32:43,683 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-03 03:32:43,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1725499838] [2022-11-03 03:32:43,685 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1725499838] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:32:43,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1246975324] [2022-11-03 03:32:43,695 INFO L159 IcfgInterpreter]: Started Sifa with 21 locations of interest [2022-11-03 03:32:43,696 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 03:32:43,696 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 03:32:43,697 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 03:32:43,697 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 03:32:45,121 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 8 for LOIs [2022-11-03 03:32:45,127 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 59 for LOIs [2022-11-03 03:32:45,147 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 03:32:47,355 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '791#(and (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-03 03:32:47,355 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 03:32:47,356 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-03 03:32:47,356 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 11 [2022-11-03 03:32:47,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015722245] [2022-11-03 03:32:47,356 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-03 03:32:47,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-03 03:32:47,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:32:47,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-03 03:32:47,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=496, Unknown=0, NotChecked=0, Total=600 [2022-11-03 03:32:47,358 INFO L87 Difference]: Start difference. First operand 51 states and 68 transitions. Second operand has 11 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 9 states have internal predecessors, (26), 4 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-03 03:32:47,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:32:47,501 INFO L93 Difference]: Finished difference Result 67 states and 88 transitions. [2022-11-03 03:32:47,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-03 03:32:47,502 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 9 states have internal predecessors, (26), 4 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 2 states have call successors, (8) Word has length 34 [2022-11-03 03:32:47,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:32:47,507 INFO L225 Difference]: With dead ends: 67 [2022-11-03 03:32:47,507 INFO L226 Difference]: Without dead ends: 65 [2022-11-03 03:32:47,509 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 74 SyntacticMatches, 3 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=118, Invalid=584, Unknown=0, NotChecked=0, Total=702 [2022-11-03 03:32:47,519 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 13 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 56 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:32:47,522 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 126 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 44 Invalid, 0 Unknown, 56 Unchecked, 0.1s Time] [2022-11-03 03:32:47,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2022-11-03 03:32:47,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 57. [2022-11-03 03:32:47,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 36 states have (on average 1.25) internal successors, (45), 38 states have internal predecessors, (45), 15 states have call successors, (15), 5 states have call predecessors, (15), 5 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2022-11-03 03:32:47,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 74 transitions. [2022-11-03 03:32:47,574 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 74 transitions. Word has length 34 [2022-11-03 03:32:47,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:32:47,575 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 74 transitions. [2022-11-03 03:32:47,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 9 states have internal predecessors, (26), 4 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-03 03:32:47,575 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 74 transitions. [2022-11-03 03:32:47,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-11-03 03:32:47,578 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:32:47,578 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:32:47,617 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1f649a-067d-4ad4-a70c-07542b04c4d7/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-03 03:32:47,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1f649a-067d-4ad4-a70c-07542b04c4d7/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:32:47,795 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:32:47,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:32:47,795 INFO L85 PathProgramCache]: Analyzing trace with hash 1793200786, now seen corresponding path program 1 times [2022-11-03 03:32:47,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:32:47,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961574363] [2022-11-03 03:32:47,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:32:47,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:32:47,808 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 03:32:47,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1165140344] [2022-11-03 03:32:47,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:32:47,808 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:32:47,808 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1f649a-067d-4ad4-a70c-07542b04c4d7/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:32:47,810 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1f649a-067d-4ad4-a70c-07542b04c4d7/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:32:47,815 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1f649a-067d-4ad4-a70c-07542b04c4d7/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-03 03:32:47,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:32:47,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-03 03:32:47,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:32:47,958 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-03 03:32:47,959 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:32:48,074 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-03 03:32:48,075 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:32:48,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961574363] [2022-11-03 03:32:48,075 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-03 03:32:48,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1165140344] [2022-11-03 03:32:48,076 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1165140344] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:32:48,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1208359982] [2022-11-03 03:32:48,081 INFO L159 IcfgInterpreter]: Started Sifa with 23 locations of interest [2022-11-03 03:32:48,081 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 03:32:48,082 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 03:32:48,082 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 03:32:48,082 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 03:32:49,088 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 8 for LOIs [2022-11-03 03:32:49,093 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 59 for LOIs [2022-11-03 03:32:49,110 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 03:32:52,624 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1248#(and (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-03 03:32:52,624 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 03:32:52,624 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-03 03:32:52,624 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 9 [2022-11-03 03:32:52,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579219574] [2022-11-03 03:32:52,624 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-03 03:32:52,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-03 03:32:52,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:32:52,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-03 03:32:52,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=449, Unknown=0, NotChecked=0, Total=552 [2022-11-03 03:32:52,626 INFO L87 Difference]: Start difference. First operand 57 states and 74 transitions. Second operand has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 8 states have internal predecessors, (23), 2 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2022-11-03 03:32:52,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:32:52,835 INFO L93 Difference]: Finished difference Result 63 states and 79 transitions. [2022-11-03 03:32:52,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 03:32:52,836 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 8 states have internal predecessors, (23), 2 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) Word has length 41 [2022-11-03 03:32:52,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:32:52,837 INFO L225 Difference]: With dead ends: 63 [2022-11-03 03:32:52,838 INFO L226 Difference]: Without dead ends: 59 [2022-11-03 03:32:52,838 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 98 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=119, Invalid=531, Unknown=0, NotChecked=0, Total=650 [2022-11-03 03:32:52,839 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 18 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:32:52,840 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 84 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:32:52,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2022-11-03 03:32:52,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 46. [2022-11-03 03:32:52,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 29 states have (on average 1.1724137931034482) internal successors, (34), 30 states have internal predecessors, (34), 12 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (11), 10 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-03 03:32:52,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 57 transitions. [2022-11-03 03:32:52,877 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 57 transitions. Word has length 41 [2022-11-03 03:32:52,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:32:52,878 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 57 transitions. [2022-11-03 03:32:52,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 8 states have internal predecessors, (23), 2 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2022-11-03 03:32:52,879 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 57 transitions. [2022-11-03 03:32:52,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-11-03 03:32:52,880 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:32:52,881 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, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:32:52,927 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1f649a-067d-4ad4-a70c-07542b04c4d7/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-03 03:32:53,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1f649a-067d-4ad4-a70c-07542b04c4d7/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:32:53,104 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:32:53,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:32:53,104 INFO L85 PathProgramCache]: Analyzing trace with hash -224296803, now seen corresponding path program 1 times [2022-11-03 03:32:53,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:32:53,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316386218] [2022-11-03 03:32:53,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:32:53,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:32:53,130 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 03:32:53,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1404114745] [2022-11-03 03:32:53,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:32:53,133 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:32:53,134 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1f649a-067d-4ad4-a70c-07542b04c4d7/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:32:53,135 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1f649a-067d-4ad4-a70c-07542b04c4d7/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:32:53,150 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1f649a-067d-4ad4-a70c-07542b04c4d7/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-03 03:32:53,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:32:53,195 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-03 03:32:53,198 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:32:53,431 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 22 proven. 4 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-11-03 03:32:53,432 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:32:53,799 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 22 proven. 4 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-11-03 03:32:53,799 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:32:53,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316386218] [2022-11-03 03:32:53,800 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-03 03:32:53,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1404114745] [2022-11-03 03:32:53,800 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1404114745] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:32:53,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1866435184] [2022-11-03 03:32:53,803 INFO L159 IcfgInterpreter]: Started Sifa with 25 locations of interest [2022-11-03 03:32:53,803 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 03:32:53,803 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 03:32:53,804 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 03:32:53,804 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 03:32:57,439 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 46 for LOIs [2022-11-03 03:32:57,504 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 59 for LOIs [2022-11-03 03:32:57,527 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 03:33:04,813 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1761#(and (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-03 03:33:04,813 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 03:33:04,813 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-03 03:33:04,814 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2022-11-03 03:33:04,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450883866] [2022-11-03 03:33:04,814 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-03 03:33:04,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-03 03:33:04,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:33:04,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-03 03:33:04,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=741, Unknown=0, NotChecked=0, Total=870 [2022-11-03 03:33:04,816 INFO L87 Difference]: Start difference. First operand 46 states and 57 transitions. Second operand has 12 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 9 states have internal predecessors, (27), 4 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (11), 5 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-03 03:33:07,053 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-03 03:33:09,072 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-03 03:33:11,107 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-03 03:33:13,240 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-03 03:33:14,344 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-03 03:33:14,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:33:14,419 INFO L93 Difference]: Finished difference Result 100 states and 131 transitions. [2022-11-03 03:33:14,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 03:33:14,419 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 9 states have internal predecessors, (27), 4 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (11), 5 states have call predecessors, (11), 3 states have call successors, (11) Word has length 54 [2022-11-03 03:33:14,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:33:14,420 INFO L225 Difference]: With dead ends: 100 [2022-11-03 03:33:14,420 INFO L226 Difference]: Without dead ends: 0 [2022-11-03 03:33:14,421 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 122 SyntacticMatches, 11 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 467 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=143, Invalid=849, Unknown=0, NotChecked=0, Total=992 [2022-11-03 03:33:14,422 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 27 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 18 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.5s IncrementalHoareTripleChecker+Time [2022-11-03 03:33:14,423 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 137 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 198 Invalid, 4 Unknown, 0 Unchecked, 9.5s Time] [2022-11-03 03:33:14,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-03 03:33:14,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-03 03:33:14,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:33:14,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-03 03:33:14,424 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 54 [2022-11-03 03:33:14,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:33:14,425 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-03 03:33:14,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 9 states have internal predecessors, (27), 4 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (11), 5 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-03 03:33:14,425 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-03 03:33:14,425 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-03 03:33:14,428 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-03 03:33:14,468 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1f649a-067d-4ad4-a70c-07542b04c4d7/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-03 03:33:14,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1f649a-067d-4ad4-a70c-07542b04c4d7/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:33:14,656 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-03 03:33:27,681 INFO L895 garLoopResultBuilder]: At program point L35-2(lines 35 55) the Hoare annotation is: (let ((.cse1 (* 2 |ULTIMATE.start_main_~v~0#1|)) (.cse2 (* |ULTIMATE.start_main_~u~0#1| |ULTIMATE.start_main_~u~0#1|)) (.cse0 (* |ULTIMATE.start_main_~v~0#1| |ULTIMATE.start_main_~v~0#1|))) (let ((.cse3 (div (+ .cse1 .cse2 (* (- 2) |ULTIMATE.start_main_~u~0#1|) (- .cse0)) 4)) (.cse5 (select |#memory_int| 1))) (and (not (= (ite (< (+ (* |ULTIMATE.start_main_~R~0#1| |ULTIMATE.start_main_~R~0#1|) 1) (+ (* 2 |ULTIMATE.start_main_~R~0#1|) |ULTIMATE.start_main_~A~0#1|)) 1 0) 0)) (= (select |#length| 3) 12) (= (+ (* |ULTIMATE.start_main_~A~0#1| 4) (* |ULTIMATE.start_main_~r~0#1| 4) .cse0 (* 2 |ULTIMATE.start_main_~u~0#1|)) (+ .cse1 .cse2)) (= 13 (select |#length| 2)) (<= .cse3 |ULTIMATE.start_main_~A~0#1|) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (not (= (ite (= (let ((.cse4 (mod |ULTIMATE.start_main_~A~0#1| 2))) (ite (and (< |ULTIMATE.start_main_~A~0#1| 0) (not (= .cse4 0))) (+ (- 2) .cse4) .cse4)) 1) 1 0) 0)) (= (select |#valid| 1) 1) (not (= (ite (and (<= 0 |ULTIMATE.start_main_~R~0#1|) (<= |ULTIMATE.start_main_~R~0#1| 50)) 1 0) 0)) (not (= (ite (and (<= |ULTIMATE.start_main_~A~0#1| 50) (<= 0 |ULTIMATE.start_main_~A~0#1|)) 1 0) 0)) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= (select .cse5 0) 48) (not (< .cse3 |ULTIMATE.start_main_~A~0#1|)) (= (select .cse5 1) 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0)))) [2022-11-03 03:33:27,681 INFO L895 garLoopResultBuilder]: At program point L23(line 23) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (and (<= 0 (+ |ULTIMATE.start_main_~A~0#1| 2147483648)) (= (select |#length| 3) 12) (= 13 (select |#length| 2)) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (= (select |#valid| 1) 1) (<= |ULTIMATE.start_main_~A~0#1| 2147483647) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= (select .cse0 0) 48) (= (select .cse0 1) 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) [2022-11-03 03:33:27,681 INFO L899 garLoopResultBuilder]: For program point L23-1(line 23) no Hoare annotation was computed. [2022-11-03 03:33:27,681 INFO L895 garLoopResultBuilder]: At program point L48-1(lines 35 55) the Hoare annotation is: (let ((.cse1 (select |#memory_int| 1))) (and (not (= (ite (< (+ (* |ULTIMATE.start_main_~R~0#1| |ULTIMATE.start_main_~R~0#1|) 1) (+ (* 2 |ULTIMATE.start_main_~R~0#1|) |ULTIMATE.start_main_~A~0#1|)) 1 0) 0)) (= (select |#length| 3) 12) (= (+ (* |ULTIMATE.start_main_~A~0#1| 4) (* |ULTIMATE.start_main_~r~0#1| 4) (* |ULTIMATE.start_main_~v~0#1| |ULTIMATE.start_main_~v~0#1|) (* 2 |ULTIMATE.start_main_~u~0#1|)) (+ (* 2 |ULTIMATE.start_main_~v~0#1|) (* |ULTIMATE.start_main_~u~0#1| |ULTIMATE.start_main_~u~0#1|))) (= 13 (select |#length| 2)) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (not (= (ite (= (let ((.cse0 (mod |ULTIMATE.start_main_~A~0#1| 2))) (ite (and (< |ULTIMATE.start_main_~A~0#1| 0) (not (= .cse0 0))) (+ (- 2) .cse0) .cse0)) 1) 1 0) 0)) (= (select |#valid| 1) 1) (not (= (ite (and (<= 0 |ULTIMATE.start_main_~R~0#1|) (<= |ULTIMATE.start_main_~R~0#1| 50)) 1 0) 0)) (not (= (ite (and (<= |ULTIMATE.start_main_~A~0#1| 50) (<= 0 |ULTIMATE.start_main_~A~0#1|)) 1 0) 0)) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= (select .cse1 0) 48) (= (select .cse1 1) 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) [2022-11-03 03:33:27,682 INFO L895 garLoopResultBuilder]: At program point L48-2(lines 35 55) the Hoare annotation is: (let ((.cse18 (select |#memory_int| 1)) (.cse17 (* 2 |ULTIMATE.start_main_~R~0#1|))) (let ((.cse0 (not (= (ite (< (+ (* |ULTIMATE.start_main_~R~0#1| |ULTIMATE.start_main_~R~0#1|) 1) (+ .cse17 |ULTIMATE.start_main_~A~0#1|)) 1 0) 0))) (.cse1 (= (select |#length| 3) 12)) (.cse2 (= 13 (select |#length| 2))) (.cse3 (= 2 (select |#length| 1))) (.cse4 (= (select |#valid| 3) 1)) (.cse5 (not (= (ite (= (let ((.cse19 (mod |ULTIMATE.start_main_~A~0#1| 2))) (ite (and (< |ULTIMATE.start_main_~A~0#1| 0) (not (= .cse19 0))) (+ (- 2) .cse19) .cse19)) 1) 1 0) 0))) (.cse6 (= (select |#valid| 1) 1)) (.cse7 (not (= (ite (and (<= 0 |ULTIMATE.start_main_~R~0#1|) (<= |ULTIMATE.start_main_~R~0#1| 50)) 1 0) 0))) (.cse8 (not (= (ite (and (<= |ULTIMATE.start_main_~A~0#1| 50) (<= 0 |ULTIMATE.start_main_~A~0#1|)) 1 0) 0))) (.cse9 (= (select |#valid| 0) 0)) (.cse10 (= (select |#valid| 2) 1)) (.cse11 (= |#NULL.offset| 0)) (.cse12 (= (select .cse18 0) 48)) (.cse13 (= (select .cse18 1) 0)) (.cse14 (< 0 |#StackHeapBarrier|)) (.cse15 (= |#NULL.base| 0))) (or (and .cse0 .cse1 (not (< |ULTIMATE.start_main_~r~0#1| 0)) (= (+ (* |ULTIMATE.start_main_~A~0#1| 4) (* |ULTIMATE.start_main_~r~0#1| 4) (* |ULTIMATE.start_main_~v~0#1| |ULTIMATE.start_main_~v~0#1|) (* 2 |ULTIMATE.start_main_~u~0#1|)) (+ (* 2 |ULTIMATE.start_main_~v~0#1|) (* |ULTIMATE.start_main_~u~0#1| |ULTIMATE.start_main_~u~0#1|))) .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13 .cse14 .cse15) (and .cse0 .cse1 .cse2 (= |ULTIMATE.start_main_~v~0#1| 1) .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 (= (+ |ULTIMATE.start_main_~A~0#1| |ULTIMATE.start_main_~r~0#1|) (let ((.cse16 (div (+ (- 1) |ULTIMATE.start_main_~u~0#1|) 2))) (* .cse16 .cse16))) .cse10 .cse11 .cse12 .cse13 (= (+ .cse17 1) |ULTIMATE.start_main_~u~0#1|) .cse14 .cse15)))) [2022-11-03 03:33:27,682 INFO L895 garLoopResultBuilder]: At program point L40-2(lines 40 46) the Hoare annotation is: (let ((.cse1 (select |#memory_int| 1))) (and (not (= (ite (< (+ (* |ULTIMATE.start_main_~R~0#1| |ULTIMATE.start_main_~R~0#1|) 1) (+ (* 2 |ULTIMATE.start_main_~R~0#1|) |ULTIMATE.start_main_~A~0#1|)) 1 0) 0)) (= (select |#length| 3) 12) (= (+ (* |ULTIMATE.start_main_~A~0#1| 4) (* |ULTIMATE.start_main_~r~0#1| 4) (* |ULTIMATE.start_main_~v~0#1| |ULTIMATE.start_main_~v~0#1|) (* 2 |ULTIMATE.start_main_~u~0#1|)) (+ (* 2 |ULTIMATE.start_main_~v~0#1|) (* |ULTIMATE.start_main_~u~0#1| |ULTIMATE.start_main_~u~0#1|))) (= 13 (select |#length| 2)) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (not (= (ite (= (let ((.cse0 (mod |ULTIMATE.start_main_~A~0#1| 2))) (ite (and (< |ULTIMATE.start_main_~A~0#1| 0) (not (= .cse0 0))) (+ (- 2) .cse0) .cse0)) 1) 1 0) 0)) (= (select |#valid| 1) 1) (not (= (ite (and (<= 0 |ULTIMATE.start_main_~R~0#1|) (<= |ULTIMATE.start_main_~R~0#1| 50)) 1 0) 0)) (not (= (ite (and (<= |ULTIMATE.start_main_~A~0#1| 50) (<= 0 |ULTIMATE.start_main_~A~0#1|)) 1 0) 0)) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= (select .cse1 0) 48) (= (select .cse1 1) 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) [2022-11-03 03:33:27,683 INFO L895 garLoopResultBuilder]: At program point L36(line 36) the Hoare annotation is: (let ((.cse18 (select |#memory_int| 1)) (.cse17 (* 2 |ULTIMATE.start_main_~R~0#1|))) (let ((.cse0 (not (= (ite (< (+ (* |ULTIMATE.start_main_~R~0#1| |ULTIMATE.start_main_~R~0#1|) 1) (+ .cse17 |ULTIMATE.start_main_~A~0#1|)) 1 0) 0))) (.cse1 (= (select |#length| 3) 12)) (.cse2 (= 13 (select |#length| 2))) (.cse3 (= 2 (select |#length| 1))) (.cse4 (= (select |#valid| 3) 1)) (.cse5 (not (= (ite (= (let ((.cse19 (mod |ULTIMATE.start_main_~A~0#1| 2))) (ite (and (< |ULTIMATE.start_main_~A~0#1| 0) (not (= .cse19 0))) (+ (- 2) .cse19) .cse19)) 1) 1 0) 0))) (.cse6 (= (select |#valid| 1) 1)) (.cse7 (not (= (ite (and (<= 0 |ULTIMATE.start_main_~R~0#1|) (<= |ULTIMATE.start_main_~R~0#1| 50)) 1 0) 0))) (.cse8 (not (= (ite (and (<= |ULTIMATE.start_main_~A~0#1| 50) (<= 0 |ULTIMATE.start_main_~A~0#1|)) 1 0) 0))) (.cse9 (= (select |#valid| 0) 0)) (.cse10 (= (select |#valid| 2) 1)) (.cse11 (= |#NULL.offset| 0)) (.cse12 (= (select .cse18 0) 48)) (.cse13 (= (select .cse18 1) 0)) (.cse14 (< 0 |#StackHeapBarrier|)) (.cse15 (= |#NULL.base| 0))) (or (and .cse0 .cse1 (not (< |ULTIMATE.start_main_~r~0#1| 0)) (= (+ (* |ULTIMATE.start_main_~A~0#1| 4) (* |ULTIMATE.start_main_~r~0#1| 4) (* |ULTIMATE.start_main_~v~0#1| |ULTIMATE.start_main_~v~0#1|) (* 2 |ULTIMATE.start_main_~u~0#1|)) (+ (* 2 |ULTIMATE.start_main_~v~0#1|) (* |ULTIMATE.start_main_~u~0#1| |ULTIMATE.start_main_~u~0#1|))) .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13 .cse14 .cse15) (and .cse0 .cse1 .cse2 (= |ULTIMATE.start_main_~v~0#1| 1) .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 (= (+ |ULTIMATE.start_main_~A~0#1| |ULTIMATE.start_main_~r~0#1|) (let ((.cse16 (div (+ (- 1) |ULTIMATE.start_main_~u~0#1|) 2))) (* .cse16 .cse16))) .cse10 .cse11 .cse12 .cse13 (= (+ .cse17 1) |ULTIMATE.start_main_~u~0#1|) .cse14 .cse15)))) [2022-11-03 03:33:27,683 INFO L899 garLoopResultBuilder]: For program point L36-1(lines 35 55) no Hoare annotation was computed. [2022-11-03 03:33:27,683 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-03 03:33:27,683 INFO L899 garLoopResultBuilder]: For program point L28(line 28) no Hoare annotation was computed. [2022-11-03 03:33:27,683 INFO L902 garLoopResultBuilder]: At program point L57(line 57) the Hoare annotation is: true [2022-11-03 03:33:27,684 INFO L895 garLoopResultBuilder]: At program point L49(line 49) the Hoare annotation is: (let ((.cse1 (select |#memory_int| 1))) (and (not (= (ite (< (+ (* |ULTIMATE.start_main_~R~0#1| |ULTIMATE.start_main_~R~0#1|) 1) (+ (* 2 |ULTIMATE.start_main_~R~0#1|) |ULTIMATE.start_main_~A~0#1|)) 1 0) 0)) (= (select |#length| 3) 12) (= (+ (* |ULTIMATE.start_main_~A~0#1| 4) (* |ULTIMATE.start_main_~r~0#1| 4) (* |ULTIMATE.start_main_~v~0#1| |ULTIMATE.start_main_~v~0#1|) (* 2 |ULTIMATE.start_main_~u~0#1|)) (+ (* 2 |ULTIMATE.start_main_~v~0#1|) (* |ULTIMATE.start_main_~u~0#1| |ULTIMATE.start_main_~u~0#1|))) (= 13 (select |#length| 2)) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (not (= (ite (= (let ((.cse0 (mod |ULTIMATE.start_main_~A~0#1| 2))) (ite (and (< |ULTIMATE.start_main_~A~0#1| 0) (not (= .cse0 0))) (+ (- 2) .cse0) .cse0)) 1) 1 0) 0)) (= (select |#valid| 1) 1) (not (= (ite (and (<= 0 |ULTIMATE.start_main_~R~0#1|) (<= |ULTIMATE.start_main_~R~0#1| 50)) 1 0) 0)) (not (= (ite (and (<= |ULTIMATE.start_main_~A~0#1| 50) (<= 0 |ULTIMATE.start_main_~A~0#1|)) 1 0) 0)) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= (select .cse1 0) 48) (= (select .cse1 1) 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) [2022-11-03 03:33:27,684 INFO L899 garLoopResultBuilder]: For program point L49-1(lines 48 54) no Hoare annotation was computed. [2022-11-03 03:33:27,684 INFO L895 garLoopResultBuilder]: At program point L41(line 41) the Hoare annotation is: (let ((.cse1 (select |#memory_int| 1))) (and (not (= (ite (< (+ (* |ULTIMATE.start_main_~R~0#1| |ULTIMATE.start_main_~R~0#1|) 1) (+ (* 2 |ULTIMATE.start_main_~R~0#1|) |ULTIMATE.start_main_~A~0#1|)) 1 0) 0)) (= (select |#length| 3) 12) (= (+ (* |ULTIMATE.start_main_~A~0#1| 4) (* |ULTIMATE.start_main_~r~0#1| 4) (* |ULTIMATE.start_main_~v~0#1| |ULTIMATE.start_main_~v~0#1|) (* 2 |ULTIMATE.start_main_~u~0#1|)) (+ (* 2 |ULTIMATE.start_main_~v~0#1|) (* |ULTIMATE.start_main_~u~0#1| |ULTIMATE.start_main_~u~0#1|))) (= 13 (select |#length| 2)) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (not (= (ite (= (let ((.cse0 (mod |ULTIMATE.start_main_~A~0#1| 2))) (ite (and (< |ULTIMATE.start_main_~A~0#1| 0) (not (= .cse0 0))) (+ (- 2) .cse0) .cse0)) 1) 1 0) 0)) (= (select |#valid| 1) 1) (not (= (ite (and (<= 0 |ULTIMATE.start_main_~R~0#1|) (<= |ULTIMATE.start_main_~R~0#1| 50)) 1 0) 0)) (not (= (ite (and (<= |ULTIMATE.start_main_~A~0#1| 50) (<= 0 |ULTIMATE.start_main_~A~0#1|)) 1 0) 0)) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= (select .cse1 0) 48) (= (select .cse1 1) 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) [2022-11-03 03:33:27,685 INFO L899 garLoopResultBuilder]: For program point L41-1(lines 40 46) no Hoare annotation was computed. [2022-11-03 03:33:27,685 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-03 03:33:27,685 INFO L895 garLoopResultBuilder]: At program point L25(line 25) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (and (= (select |#length| 3) 12) (<= 0 (+ |ULTIMATE.start_main_~R~0#1| 2147483648)) (<= |ULTIMATE.start_main_~R~0#1| 2147483647) (= 13 (select |#length| 2)) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (= (select |#valid| 1) 1) (not (= (ite (and (<= |ULTIMATE.start_main_~A~0#1| 50) (<= 0 |ULTIMATE.start_main_~A~0#1|)) 1 0) 0)) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= (select .cse0 0) 48) (= (select .cse0 1) 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) [2022-11-03 03:33:27,685 INFO L895 garLoopResultBuilder]: At program point L25-1(line 25) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (and (= (select |#length| 3) 12) (= 13 (select |#length| 2)) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (= (select |#valid| 1) 1) (not (= (ite (and (<= 0 |ULTIMATE.start_main_~R~0#1|) (<= |ULTIMATE.start_main_~R~0#1| 50)) 1 0) 0)) (not (= (ite (and (<= |ULTIMATE.start_main_~A~0#1| 50) (<= 0 |ULTIMATE.start_main_~A~0#1|)) 1 0) 0)) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= (select .cse0 0) 48) (= (select .cse0 1) 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) [2022-11-03 03:33:27,685 INFO L895 garLoopResultBuilder]: At program point L26(line 26) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (and (not (= (ite (< (+ (* |ULTIMATE.start_main_~R~0#1| |ULTIMATE.start_main_~R~0#1|) 1) (+ (* 2 |ULTIMATE.start_main_~R~0#1|) |ULTIMATE.start_main_~A~0#1|)) 1 0) 0)) (= (select |#length| 3) 12) (= 13 (select |#length| 2)) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (= (select |#valid| 1) 1) (not (= (ite (and (<= 0 |ULTIMATE.start_main_~R~0#1|) (<= |ULTIMATE.start_main_~R~0#1| 50)) 1 0) 0)) (not (= (ite (and (<= |ULTIMATE.start_main_~A~0#1| 50) (<= 0 |ULTIMATE.start_main_~A~0#1|)) 1 0) 0)) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= (select .cse0 0) 48) (= (select .cse0 1) 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) [2022-11-03 03:33:27,685 INFO L902 garLoopResultBuilder]: At program point assume_abort_if_notENTRY(lines 8 10) the Hoare annotation is: true [2022-11-03 03:33:27,686 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 8 10) no Hoare annotation was computed. [2022-11-03 03:33:27,686 INFO L902 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 11 17) the Hoare annotation is: true [2022-11-03 03:33:27,686 INFO L899 garLoopResultBuilder]: For program point L13(lines 13 14) no Hoare annotation was computed. [2022-11-03 03:33:27,686 INFO L899 garLoopResultBuilder]: For program point L12(lines 12 15) no Hoare annotation was computed. [2022-11-03 03:33:27,686 INFO L899 garLoopResultBuilder]: For program point L12-2(lines 11 17) no Hoare annotation was computed. [2022-11-03 03:33:27,686 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 11 17) no Hoare annotation was computed. [2022-11-03 03:33:27,687 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2022-11-03 03:33:27,690 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-11-03 03:33:27,692 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-03 03:33:27,714 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 03:33:27 BoogieIcfgContainer [2022-11-03 03:33:27,715 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-03 03:33:27,715 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-03 03:33:27,715 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-03 03:33:27,716 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-03 03:33:27,716 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:32:30" (3/4) ... [2022-11-03 03:33:27,719 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-03 03:33:27,725 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2022-11-03 03:33:27,725 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2022-11-03 03:33:27,728 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2022-11-03 03:33:27,729 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2022-11-03 03:33:27,729 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-11-03 03:33:27,729 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-03 03:33:27,764 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1f649a-067d-4ad4-a70c-07542b04c4d7/bin/utaipan-7li7fVZpFI/witness.graphml [2022-11-03 03:33:27,765 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-03 03:33:27,765 INFO L158 Benchmark]: Toolchain (without parser) took 58496.32ms. Allocated memory was 113.2MB in the beginning and 163.6MB in the end (delta: 50.3MB). Free memory was 83.9MB in the beginning and 127.6MB in the end (delta: -43.8MB). Peak memory consumption was 5.1MB. Max. memory is 16.1GB. [2022-11-03 03:33:27,766 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 113.2MB. Free memory is still 67.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 03:33:27,766 INFO L158 Benchmark]: CACSL2BoogieTranslator took 321.37ms. Allocated memory is still 113.2MB. Free memory was 83.6MB in the beginning and 85.6MB in the end (delta: -2.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-03 03:33:27,767 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.53ms. Allocated memory is still 113.2MB. Free memory was 85.3MB in the beginning and 83.9MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-03 03:33:27,767 INFO L158 Benchmark]: Boogie Preprocessor took 23.24ms. Allocated memory is still 113.2MB. Free memory was 83.9MB in the beginning and 82.6MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 03:33:27,767 INFO L158 Benchmark]: RCFGBuilder took 467.62ms. Allocated memory is still 113.2MB. Free memory was 82.6MB in the beginning and 70.7MB in the end (delta: 12.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-03 03:33:27,768 INFO L158 Benchmark]: TraceAbstraction took 57589.61ms. Allocated memory was 113.2MB in the beginning and 163.6MB in the end (delta: 50.3MB). Free memory was 70.1MB in the beginning and 129.7MB in the end (delta: -59.7MB). Peak memory consumption was 80.3MB. Max. memory is 16.1GB. [2022-11-03 03:33:27,768 INFO L158 Benchmark]: Witness Printer took 49.63ms. Allocated memory is still 163.6MB. Free memory was 129.7MB in the beginning and 127.6MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 03:33:27,770 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 113.2MB. Free memory is still 67.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 321.37ms. Allocated memory is still 113.2MB. Free memory was 83.6MB in the beginning and 85.6MB in the end (delta: -2.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 35.53ms. Allocated memory is still 113.2MB. Free memory was 85.3MB in the beginning and 83.9MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 23.24ms. Allocated memory is still 113.2MB. Free memory was 83.9MB in the beginning and 82.6MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 467.62ms. Allocated memory is still 113.2MB. Free memory was 82.6MB in the beginning and 70.7MB in the end (delta: 12.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 57589.61ms. Allocated memory was 113.2MB in the beginning and 163.6MB in the end (delta: 50.3MB). Free memory was 70.1MB in the beginning and 129.7MB in the end (delta: -59.7MB). Peak memory consumption was 80.3MB. Max. memory is 16.1GB. * Witness Printer took 49.63ms. Allocated memory is still 163.6MB. Free memory was 129.7MB in the beginning and 127.6MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 14]: 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, 27 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 57.5s, OverallIterations: 5, TraceHistogramMax: 6, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 14.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 13.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 4 mSolverCounterUnknown, 158 SdHoareTripleChecker+Valid, 13.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 140 mSDsluCounter, 472 SdHoareTripleChecker+Invalid, 13.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 56 IncrementalHoareTripleChecker+Unchecked, 402 mSDsCounter, 76 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 536 IncrementalHoareTripleChecker+Invalid, 672 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 76 mSolverCounterUnsat, 111 mSDtfsCounter, 536 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 484 GetRequests, 361 SyntacticMatches, 20 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 892 ImplicationChecksByTransitivity, 19.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=57occurred in iteration=3, InterpolantAutomatonStates: 43, 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, 5 MinimizatonAttempts, 22 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 14 LocationsWithAnnotation, 43 PreInvPairs, 73 NumberOfFragments, 1742 HoareAnnotationTreeSize, 43 FomulaSimplifications, 144 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 14 FomulaSimplificationsInter, 8339 FormulaSimplificationTreeSizeReductionInter, 12.9s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 5.9s InterpolantComputationTime, 175 NumberOfCodeBlocks, 175 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 321 ConstructedInterpolants, 8 QuantifiedInterpolants, 1350 SizeOfPredicates, 21 NumberOfNonLiveVariables, 528 ConjunctsInSsa, 60 ConjunctsInUnsatCore, 9 InterpolantComputations, 1 PerfectInterpolantSequences, 270/286 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: 0.8s, ICFG_INTERPRETER_ENTERED_PROCEDURES: 3, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 21, DAG_INTERPRETER_EARLY_EXITS: 1, TOOLS_POST_APPLICATIONS: 14, TOOLS_POST_TIME: 0.1s, TOOLS_POST_CALL_APPLICATIONS: 16, TOOLS_POST_CALL_TIME: 0.4s, TOOLS_POST_RETURN_APPLICATIONS: 10, TOOLS_POST_RETURN_TIME: 0.1s, TOOLS_QUANTIFIERELIM_APPLICATIONS: 40, TOOLS_QUANTIFIERELIM_TIME: 0.4s, TOOLS_QUANTIFIERELIM_MAX_TIME: 0.0s, FLUID_QUERY_TIME: 0.0s, FLUID_QUERIES: 54, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 18, DOMAIN_JOIN_TIME: 0.2s, 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: 21, DOMAIN_ISBOTTOM_TIME: 0.0s, 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: 10, CALL_SUMMARIZER_CACHE_MISSES: 2, 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: 222, DAG_COMPRESSION_RETAINED_NODES: 58, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: (((((((((((((((((!((if R * R + 1 < 2 * R + A then 1 else 0) == 0) && unknown-#length-unknown[3] == 12) && !(r < 0)) && A * 4 + r * 4 + v * v + 2 * u == 2 * v + u * u) && 13 == unknown-#length-unknown[2]) && 2 == unknown-#length-unknown[1]) && \valid[3] == 1) && !((if (if A < 0 && !(A % 2 == 0) then -2 + A % 2 else A % 2) == 1 then 1 else 0) == 0)) && \valid[1] == 1) && !((if 0 <= R && R <= 50 then 1 else 0) == 0)) && !((if A <= 50 && 0 <= A then 1 else 0) == 0)) && \valid[0] == 0) && \valid[2] == 1) && #NULL == 0) && unknown-#memory_int-unknown[1][0] == 48) && unknown-#memory_int-unknown[1][1] == 0) && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0) || ((((((((((((((((((!((if R * R + 1 < 2 * R + A then 1 else 0) == 0) && unknown-#length-unknown[3] == 12) && 13 == unknown-#length-unknown[2]) && v == 1) && 2 == unknown-#length-unknown[1]) && \valid[3] == 1) && !((if (if A < 0 && !(A % 2 == 0) then -2 + A % 2 else A % 2) == 1 then 1 else 0) == 0)) && \valid[1] == 1) && !((if 0 <= R && R <= 50 then 1 else 0) == 0)) && !((if A <= 50 && 0 <= A then 1 else 0) == 0)) && \valid[0] == 0) && A + r == (-1 + u) / 2 * ((-1 + u) / 2)) && \valid[2] == 1) && #NULL == 0) && unknown-#memory_int-unknown[1][0] == 48) && unknown-#memory_int-unknown[1][1] == 0) && 2 * R + 1 == u) && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0) - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: (((((((((((((((!((if R * R + 1 < 2 * R + A then 1 else 0) == 0) && unknown-#length-unknown[3] == 12) && A * 4 + r * 4 + v * v + 2 * u == 2 * v + u * u) && 13 == unknown-#length-unknown[2]) && 2 == unknown-#length-unknown[1]) && \valid[3] == 1) && !((if (if A < 0 && !(A % 2 == 0) then -2 + A % 2 else A % 2) == 1 then 1 else 0) == 0)) && \valid[1] == 1) && !((if 0 <= R && R <= 50 then 1 else 0) == 0)) && !((if A <= 50 && 0 <= A then 1 else 0) == 0)) && \valid[0] == 0) && \valid[2] == 1) && #NULL == 0) && unknown-#memory_int-unknown[1][0] == 48) && unknown-#memory_int-unknown[1][1] == 0) && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0 - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: (((((((((((((((!((if R * R + 1 < 2 * R + A then 1 else 0) == 0) && unknown-#length-unknown[3] == 12) && A * 4 + r * 4 + v * v + 2 * u == 2 * v + u * u) && 13 == unknown-#length-unknown[2]) && 2 == unknown-#length-unknown[1]) && \valid[3] == 1) && !((if (if A < 0 && !(A % 2 == 0) then -2 + A % 2 else A % 2) == 1 then 1 else 0) == 0)) && \valid[1] == 1) && !((if 0 <= R && R <= 50 then 1 else 0) == 0)) && !((if A <= 50 && 0 <= A then 1 else 0) == 0)) && \valid[0] == 0) && \valid[2] == 1) && #NULL == 0) && unknown-#memory_int-unknown[1][0] == 48) && 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! [2022-11-03 03:33:27,810 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1f649a-067d-4ad4-a70c-07542b04c4d7/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE