./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/hard-ll_valuebound2.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_b08f1663-fb6f-457a-ac67-aa7f47f100f8/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b08f1663-fb6f-457a-ac67-aa7f47f100f8/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_b08f1663-fb6f-457a-ac67-aa7f47f100f8/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b08f1663-fb6f-457a-ac67-aa7f47f100f8/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/hard-ll_valuebound2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b08f1663-fb6f-457a-ac67-aa7f47f100f8/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_b08f1663-fb6f-457a-ac67-aa7f47f100f8/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 9851f41ad4fb2d0ff96507e8e48f0d2886a8de6481eed845b23377b9fa492b45 --- 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 03:33:29,056 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 03:33:29,059 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 03:33:29,108 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 03:33:29,108 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 03:33:29,112 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 03:33:29,114 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 03:33:29,119 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 03:33:29,121 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 03:33:29,127 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 03:33:29,128 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 03:33:29,130 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 03:33:29,130 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 03:33:29,133 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 03:33:29,135 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 03:33:29,137 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 03:33:29,138 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 03:33:29,140 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 03:33:29,141 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 03:33:29,148 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 03:33:29,149 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 03:33:29,150 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 03:33:29,154 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 03:33:29,155 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 03:33:29,163 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 03:33:29,164 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 03:33:29,164 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 03:33:29,166 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 03:33:29,166 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 03:33:29,167 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 03:33:29,168 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 03:33:29,170 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 03:33:29,172 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 03:33:29,174 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 03:33:29,175 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 03:33:29,175 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 03:33:29,176 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 03:33:29,176 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 03:33:29,177 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 03:33:29,178 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 03:33:29,179 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 03:33:29,180 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b08f1663-fb6f-457a-ac67-aa7f47f100f8/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-03 03:33:29,222 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 03:33:29,222 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 03:33:29,223 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 03:33:29,223 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 03:33:29,224 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 03:33:29,224 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 03:33:29,224 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 03:33:29,224 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 03:33:29,225 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 03:33:29,225 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 03:33:29,226 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 03:33:29,226 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 03:33:29,226 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 03:33:29,227 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 03:33:29,227 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 03:33:29,227 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 03:33:29,227 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 03:33:29,227 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 03:33:29,228 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 03:33:29,228 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 03:33:29,229 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 03:33:29,229 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 03:33:29,229 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 03:33:29,229 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 03:33:29,229 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 03:33:29,230 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 03:33:29,230 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 03:33:29,230 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 03:33:29,230 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 03:33:29,231 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 03:33:29,231 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 03:33:29,231 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 03:33:29,231 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:33:29,232 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 03:33:29,232 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 03:33:29,232 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 03:33:29,232 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 03:33:29,233 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 03:33:29,233 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 03:33:29,233 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 03:33:29,233 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 03:33:29,233 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_b08f1663-fb6f-457a-ac67-aa7f47f100f8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b08f1663-fb6f-457a-ac67-aa7f47f100f8/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9851f41ad4fb2d0ff96507e8e48f0d2886a8de6481eed845b23377b9fa492b45 [2022-11-03 03:33:29,557 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 03:33:29,587 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 03:33:29,590 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 03:33:29,591 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 03:33:29,592 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 03:33:29,593 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b08f1663-fb6f-457a-ac67-aa7f47f100f8/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/nla-digbench-scaling/hard-ll_valuebound2.c [2022-11-03 03:33:29,662 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b08f1663-fb6f-457a-ac67-aa7f47f100f8/bin/utaipan-7li7fVZpFI/data/5e30846aa/8758df42e5ee4f14a3a33a0c43dd4a26/FLAG26235c12c [2022-11-03 03:33:30,132 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 03:33:30,137 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b08f1663-fb6f-457a-ac67-aa7f47f100f8/sv-benchmarks/c/nla-digbench-scaling/hard-ll_valuebound2.c [2022-11-03 03:33:30,144 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b08f1663-fb6f-457a-ac67-aa7f47f100f8/bin/utaipan-7li7fVZpFI/data/5e30846aa/8758df42e5ee4f14a3a33a0c43dd4a26/FLAG26235c12c [2022-11-03 03:33:30,530 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b08f1663-fb6f-457a-ac67-aa7f47f100f8/bin/utaipan-7li7fVZpFI/data/5e30846aa/8758df42e5ee4f14a3a33a0c43dd4a26 [2022-11-03 03:33:30,533 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 03:33:30,535 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 03:33:30,539 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 03:33:30,540 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 03:33:30,543 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 03:33:30,544 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:33:30" (1/1) ... [2022-11-03 03:33:30,545 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a2228e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:33:30, skipping insertion in model container [2022-11-03 03:33:30,545 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:33:30" (1/1) ... [2022-11-03 03:33:30,554 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 03:33:30,571 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 03:33:30,777 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_b08f1663-fb6f-457a-ac67-aa7f47f100f8/sv-benchmarks/c/nla-digbench-scaling/hard-ll_valuebound2.c[538,551] [2022-11-03 03:33:30,793 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:33:30,812 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 03:33:30,824 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_b08f1663-fb6f-457a-ac67-aa7f47f100f8/sv-benchmarks/c/nla-digbench-scaling/hard-ll_valuebound2.c[538,551] [2022-11-03 03:33:30,832 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:33:30,844 INFO L208 MainTranslator]: Completed translation [2022-11-03 03:33:30,844 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:33:30 WrapperNode [2022-11-03 03:33:30,845 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 03:33:30,846 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 03:33:30,846 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 03:33:30,846 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 03:33:30,853 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:33:30" (1/1) ... [2022-11-03 03:33:30,859 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:33:30" (1/1) ... [2022-11-03 03:33:30,877 INFO L138 Inliner]: procedures = 14, calls = 17, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 55 [2022-11-03 03:33:30,877 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 03:33:30,878 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 03:33:30,878 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 03:33:30,878 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 03:33:30,887 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:33:30" (1/1) ... [2022-11-03 03:33:30,887 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:33:30" (1/1) ... [2022-11-03 03:33:30,888 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:33:30" (1/1) ... [2022-11-03 03:33:30,889 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:33:30" (1/1) ... [2022-11-03 03:33:30,892 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:33:30" (1/1) ... [2022-11-03 03:33:30,895 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:33:30" (1/1) ... [2022-11-03 03:33:30,896 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:33:30" (1/1) ... [2022-11-03 03:33:30,897 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:33:30" (1/1) ... [2022-11-03 03:33:30,899 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 03:33:30,900 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 03:33:30,900 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 03:33:30,901 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 03:33:30,907 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:33:30" (1/1) ... [2022-11-03 03:33:30,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:33:30,926 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b08f1663-fb6f-457a-ac67-aa7f47f100f8/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:33:30,940 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b08f1663-fb6f-457a-ac67-aa7f47f100f8/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 03:33:30,953 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b08f1663-fb6f-457a-ac67-aa7f47f100f8/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 03:33:30,986 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 03:33:30,986 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-03 03:33:30,987 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-03 03:33:30,987 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 03:33:30,987 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 03:33:30,987 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 03:33:30,987 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-03 03:33:30,987 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-03 03:33:31,043 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 03:33:31,045 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 03:33:31,193 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 03:33:31,224 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 03:33:31,225 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-03 03:33:31,227 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:33:31 BoogieIcfgContainer [2022-11-03 03:33:31,227 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 03:33:31,229 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 03:33:31,230 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 03:33:31,233 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 03:33:31,233 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 03:33:30" (1/3) ... [2022-11-03 03:33:31,234 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c70e0fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:33:31, skipping insertion in model container [2022-11-03 03:33:31,234 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:33:30" (2/3) ... [2022-11-03 03:33:31,235 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c70e0fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:33:31, skipping insertion in model container [2022-11-03 03:33:31,235 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:33:31" (3/3) ... [2022-11-03 03:33:31,236 INFO L112 eAbstractionObserver]: Analyzing ICFG hard-ll_valuebound2.c [2022-11-03 03:33:31,255 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 03:33:31,255 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 03:33:31,305 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 03:33:31,312 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;@4815f1ce, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 03:33:31,312 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 03:33:31,317 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-03 03:33:31,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-03 03:33:31,324 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:33:31,325 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:33:31,328 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:33:31,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:33:31,335 INFO L85 PathProgramCache]: Analyzing trace with hash 763440750, now seen corresponding path program 1 times [2022-11-03 03:33:31,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:33:31,347 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726382155] [2022-11-03 03:33:31,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:33:31,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:33:31,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:33:31,818 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-03 03:33:31,819 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:33:31,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726382155] [2022-11-03 03:33:31,820 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726382155] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:33:31,820 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:33:31,820 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 03:33:31,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748657532] [2022-11-03 03:33:31,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:33:31,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:33:31,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:33:31,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:33:31,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:33:31,875 INFO L87 Difference]: Start difference. First operand has 27 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) 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, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-03 03:33:31,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:33:31,980 INFO L93 Difference]: Finished difference Result 58 states and 96 transitions. [2022-11-03 03:33:31,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 03:33:31,983 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, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 17 [2022-11-03 03:33:31,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:33:31,990 INFO L225 Difference]: With dead ends: 58 [2022-11-03 03:33:31,990 INFO L226 Difference]: Without dead ends: 35 [2022-11-03 03:33:31,993 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-03 03:33:31,997 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 11 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:33:31,998 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 108 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:33:32,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-11-03 03:33:32,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 29. [2022-11-03 03:33:32,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 15 states have (on average 1.2) internal successors, (18), 16 states have internal predecessors, (18), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-11-03 03:33:32,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 37 transitions. [2022-11-03 03:33:32,066 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 37 transitions. Word has length 17 [2022-11-03 03:33:32,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:33:32,067 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 37 transitions. [2022-11-03 03:33:32,067 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, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-03 03:33:32,068 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 37 transitions. [2022-11-03 03:33:32,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-03 03:33:32,069 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:33:32,069 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:33:32,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 03:33:32,070 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:33:32,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:33:32,071 INFO L85 PathProgramCache]: Analyzing trace with hash 1804559349, now seen corresponding path program 1 times [2022-11-03 03:33:32,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:33:32,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303095338] [2022-11-03 03:33:32,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:33:32,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:33:32,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:33:32,239 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-03 03:33:32,239 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:33:32,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303095338] [2022-11-03 03:33:32,239 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303095338] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:33:32,240 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:33:32,240 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 03:33:32,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609540637] [2022-11-03 03:33:32,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:33:32,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:33:32,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:33:32,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:33:32,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:33:32,243 INFO L87 Difference]: Start difference. First operand 29 states and 37 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-03 03:33:32,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:33:32,324 INFO L93 Difference]: Finished difference Result 41 states and 52 transitions. [2022-11-03 03:33:32,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 03:33:32,325 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 22 [2022-11-03 03:33:32,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:33:32,326 INFO L225 Difference]: With dead ends: 41 [2022-11-03 03:33:32,327 INFO L226 Difference]: Without dead ends: 39 [2022-11-03 03:33:32,327 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-03 03:33:32,329 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 8 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:33:32,329 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 100 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:33:32,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-11-03 03:33:32,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 33. [2022-11-03 03:33:32,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 19 states have internal predecessors, (21), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-11-03 03:33:32,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 40 transitions. [2022-11-03 03:33:32,341 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 40 transitions. Word has length 22 [2022-11-03 03:33:32,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:33:32,342 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 40 transitions. [2022-11-03 03:33:32,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-03 03:33:32,342 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 40 transitions. [2022-11-03 03:33:32,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-03 03:33:32,343 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:33:32,344 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:33:32,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 03:33:32,344 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:33:32,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:33:32,345 INFO L85 PathProgramCache]: Analyzing trace with hash 496345742, now seen corresponding path program 1 times [2022-11-03 03:33:32,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:33:32,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065143404] [2022-11-03 03:33:32,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:33:32,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:33:32,359 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 03:33:32,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1842418171] [2022-11-03 03:33:32,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:33:32,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:33:32,360 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b08f1663-fb6f-457a-ac67-aa7f47f100f8/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:33:32,362 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b08f1663-fb6f-457a-ac67-aa7f47f100f8/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:33:32,390 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b08f1663-fb6f-457a-ac67-aa7f47f100f8/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 03:33:32,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:33:32,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-03 03:33:32,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:33:32,566 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-03 03:33:32,568 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:33:32,569 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:33:32,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065143404] [2022-11-03 03:33:32,569 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-03 03:33:32,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1842418171] [2022-11-03 03:33:32,570 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1842418171] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:33:32,572 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:33:32,575 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 03:33:32,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673755391] [2022-11-03 03:33:32,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:33:32,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:33:32,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:33:32,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:33:32,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:33:32,578 INFO L87 Difference]: Start difference. First operand 33 states and 40 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-03 03:33:32,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:33:32,736 INFO L93 Difference]: Finished difference Result 60 states and 78 transitions. [2022-11-03 03:33:32,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 03:33:32,736 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 27 [2022-11-03 03:33:32,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:33:32,742 INFO L225 Difference]: With dead ends: 60 [2022-11-03 03:33:32,742 INFO L226 Difference]: Without dead ends: 47 [2022-11-03 03:33:32,744 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-03 03:33:32,748 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 8 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:33:32,751 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 101 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:33:32,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2022-11-03 03:33:32,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2022-11-03 03:33:32,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 25 states have (on average 1.16) internal successors, (29), 27 states have internal predecessors, (29), 16 states have call successors, (16), 5 states have call predecessors, (16), 5 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2022-11-03 03:33:32,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 59 transitions. [2022-11-03 03:33:32,784 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 59 transitions. Word has length 27 [2022-11-03 03:33:32,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:33:32,785 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 59 transitions. [2022-11-03 03:33:32,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-03 03:33:32,786 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 59 transitions. [2022-11-03 03:33:32,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-03 03:33:32,787 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:33:32,787 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:33:32,825 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b08f1663-fb6f-457a-ac67-aa7f47f100f8/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-03 03:33:33,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b08f1663-fb6f-457a-ac67-aa7f47f100f8/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:33:33,003 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:33:33,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:33:33,003 INFO L85 PathProgramCache]: Analyzing trace with hash -1046956766, now seen corresponding path program 1 times [2022-11-03 03:33:33,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:33:33,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792521556] [2022-11-03 03:33:33,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:33:33,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:33:33,016 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 03:33:33,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1569417748] [2022-11-03 03:33:33,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:33:33,016 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:33:33,016 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b08f1663-fb6f-457a-ac67-aa7f47f100f8/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:33:33,017 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b08f1663-fb6f-457a-ac67-aa7f47f100f8/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:33:33,038 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b08f1663-fb6f-457a-ac67-aa7f47f100f8/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-03 03:33:33,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:33:33,079 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-03 03:33:33,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:33:33,331 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-03 03:33:33,331 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:33:33,479 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-03 03:33:33,479 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:33:33,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792521556] [2022-11-03 03:33:33,480 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-03 03:33:33,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1569417748] [2022-11-03 03:33:33,480 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1569417748] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-03 03:33:33,481 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 03:33:33,481 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 10 [2022-11-03 03:33:33,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600417058] [2022-11-03 03:33:33,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:33:33,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 03:33:33,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:33:33,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 03:33:33,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-11-03 03:33:33,483 INFO L87 Difference]: Start difference. First operand 47 states and 59 transitions. Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 03:33:33,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:33:33,600 INFO L93 Difference]: Finished difference Result 59 states and 74 transitions. [2022-11-03 03:33:33,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 03:33:33,601 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 34 [2022-11-03 03:33:33,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:33:33,602 INFO L225 Difference]: With dead ends: 59 [2022-11-03 03:33:33,602 INFO L226 Difference]: Without dead ends: 57 [2022-11-03 03:33:33,603 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 56 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-11-03 03:33:33,604 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 10 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:33:33,604 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 104 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:33:33,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2022-11-03 03:33:33,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 53. [2022-11-03 03:33:33,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 29 states have (on average 1.1379310344827587) internal successors, (33), 32 states have internal predecessors, (33), 17 states have call successors, (17), 6 states have call predecessors, (17), 6 states have return successors, (15), 14 states have call predecessors, (15), 15 states have call successors, (15) [2022-11-03 03:33:33,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 65 transitions. [2022-11-03 03:33:33,620 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 65 transitions. Word has length 34 [2022-11-03 03:33:33,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:33:33,621 INFO L495 AbstractCegarLoop]: Abstraction has 53 states and 65 transitions. [2022-11-03 03:33:33,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 03:33:33,622 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 65 transitions. [2022-11-03 03:33:33,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-11-03 03:33:33,623 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:33:33,623 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:33:33,662 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b08f1663-fb6f-457a-ac67-aa7f47f100f8/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-03 03:33:33,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b08f1663-fb6f-457a-ac67-aa7f47f100f8/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:33:33,851 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:33:33,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:33:33,851 INFO L85 PathProgramCache]: Analyzing trace with hash -202147981, now seen corresponding path program 1 times [2022-11-03 03:33:33,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:33:33,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047734601] [2022-11-03 03:33:33,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:33:33,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:33:33,868 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 03:33:33,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [520208064] [2022-11-03 03:33:33,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:33:33,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:33:33,870 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b08f1663-fb6f-457a-ac67-aa7f47f100f8/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:33:33,871 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b08f1663-fb6f-457a-ac67-aa7f47f100f8/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:33:33,897 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b08f1663-fb6f-457a-ac67-aa7f47f100f8/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-03 03:33:33,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:33:33,946 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-03 03:33:33,952 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:33:34,299 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 11 proven. 5 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-11-03 03:33:34,299 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:33:34,510 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-11-03 03:33:34,510 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:33:34,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047734601] [2022-11-03 03:33:34,510 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-03 03:33:34,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [520208064] [2022-11-03 03:33:34,511 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [520208064] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-03 03:33:34,511 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 03:33:34,511 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 11 [2022-11-03 03:33:34,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103489410] [2022-11-03 03:33:34,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:33:34,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 03:33:34,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:33:34,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 03:33:34,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-11-03 03:33:34,514 INFO L87 Difference]: Start difference. First operand 53 states and 65 transitions. Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-03 03:33:34,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:33:34,950 INFO L93 Difference]: Finished difference Result 63 states and 77 transitions. [2022-11-03 03:33:34,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 03:33:34,957 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 44 [2022-11-03 03:33:34,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:33:34,958 INFO L225 Difference]: With dead ends: 63 [2022-11-03 03:33:34,958 INFO L226 Difference]: Without dead ends: 61 [2022-11-03 03:33:34,959 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 75 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-11-03 03:33:34,959 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 11 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 03:33:34,960 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 87 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 03:33:34,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2022-11-03 03:33:34,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 58. [2022-11-03 03:33:34,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 32 states have (on average 1.125) internal successors, (36), 35 states have internal predecessors, (36), 18 states have call successors, (18), 7 states have call predecessors, (18), 7 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2022-11-03 03:33:34,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 70 transitions. [2022-11-03 03:33:34,984 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 70 transitions. Word has length 44 [2022-11-03 03:33:34,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:33:34,987 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 70 transitions. [2022-11-03 03:33:34,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-03 03:33:34,988 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 70 transitions. [2022-11-03 03:33:34,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-03 03:33:34,993 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:33:34,994 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:33:35,035 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b08f1663-fb6f-457a-ac67-aa7f47f100f8/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-03 03:33:35,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b08f1663-fb6f-457a-ac67-aa7f47f100f8/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:33:35,219 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:33:35,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:33:35,219 INFO L85 PathProgramCache]: Analyzing trace with hash 15172884, now seen corresponding path program 1 times [2022-11-03 03:33:35,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:33:35,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076144921] [2022-11-03 03:33:35,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:33:35,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:33:35,238 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 03:33:35,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1758074696] [2022-11-03 03:33:35,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:33:35,239 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:33:35,239 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b08f1663-fb6f-457a-ac67-aa7f47f100f8/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:33:35,240 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b08f1663-fb6f-457a-ac67-aa7f47f100f8/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:33:35,244 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b08f1663-fb6f-457a-ac67-aa7f47f100f8/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-03 03:33:35,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:33:35,296 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-03 03:33:35,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:33:35,382 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-11-03 03:33:35,382 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:33:35,383 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:33:35,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076144921] [2022-11-03 03:33:35,383 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-03 03:33:35,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1758074696] [2022-11-03 03:33:35,383 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1758074696] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:33:35,383 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:33:35,384 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 03:33:35,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475324711] [2022-11-03 03:33:35,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:33:35,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:33:35,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:33:35,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:33:35,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:33:35,386 INFO L87 Difference]: Start difference. First operand 58 states and 70 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-03 03:33:35,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:33:35,474 INFO L93 Difference]: Finished difference Result 67 states and 80 transitions. [2022-11-03 03:33:35,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 03:33:35,475 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 45 [2022-11-03 03:33:35,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:33:35,476 INFO L225 Difference]: With dead ends: 67 [2022-11-03 03:33:35,476 INFO L226 Difference]: Without dead ends: 60 [2022-11-03 03:33:35,477 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-03 03:33:35,478 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 6 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:33:35,478 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 84 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:33:35,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2022-11-03 03:33:35,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 59. [2022-11-03 03:33:35,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 34 states have (on average 1.1176470588235294) internal successors, (38), 36 states have internal predecessors, (38), 16 states have call successors, (16), 8 states have call predecessors, (16), 8 states have return successors, (15), 14 states have call predecessors, (15), 15 states have call successors, (15) [2022-11-03 03:33:35,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 69 transitions. [2022-11-03 03:33:35,492 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 69 transitions. Word has length 45 [2022-11-03 03:33:35,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:33:35,493 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 69 transitions. [2022-11-03 03:33:35,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-03 03:33:35,494 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 69 transitions. [2022-11-03 03:33:35,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-03 03:33:35,495 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:33:35,495 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:33:35,538 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b08f1663-fb6f-457a-ac67-aa7f47f100f8/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-03 03:33:35,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b08f1663-fb6f-457a-ac67-aa7f47f100f8/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:33:35,719 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:33:35,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:33:35,719 INFO L85 PathProgramCache]: Analyzing trace with hash 166119996, now seen corresponding path program 1 times [2022-11-03 03:33:35,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:33:35,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136626181] [2022-11-03 03:33:35,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:33:35,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:33:35,732 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 03:33:35,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1308875296] [2022-11-03 03:33:35,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:33:35,732 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:33:35,733 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b08f1663-fb6f-457a-ac67-aa7f47f100f8/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:33:35,734 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b08f1663-fb6f-457a-ac67-aa7f47f100f8/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:33:35,752 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b08f1663-fb6f-457a-ac67-aa7f47f100f8/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-03 03:33:35,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:33:35,812 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-03 03:33:35,815 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:33:36,349 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 21 proven. 23 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2022-11-03 03:33:36,350 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:33:48,784 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 21 proven. 23 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2022-11-03 03:33:48,784 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:33:48,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136626181] [2022-11-03 03:33:48,784 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-03 03:33:48,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1308875296] [2022-11-03 03:33:48,785 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1308875296] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:33:48,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [263119526] [2022-11-03 03:33:48,804 INFO L159 IcfgInterpreter]: Started Sifa with 23 locations of interest [2022-11-03 03:33:48,805 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 03:33:48,808 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 03:33:48,814 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 03:33:48,814 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 03:33:52,056 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 8 for LOIs [2022-11-03 03:33:52,065 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 8 for LOIs [2022-11-03 03:33:52,067 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 03:33:54,090 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2088#(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 03:33:54,090 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 03:33:54,090 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-03 03:33:54,090 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 16 [2022-11-03 03:33:54,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530564792] [2022-11-03 03:33:54,091 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-03 03:33:54,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-03 03:33:54,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:33:54,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-03 03:33:54,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=651, Unknown=0, NotChecked=0, Total=756 [2022-11-03 03:33:54,093 INFO L87 Difference]: Start difference. First operand 59 states and 69 transitions. Second operand has 16 states, 16 states have (on average 1.875) internal successors, (30), 14 states have internal predecessors, (30), 9 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 8 states have call predecessors, (19), 7 states have call successors, (19) [2022-11-03 03:34:03,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:34:03,951 INFO L93 Difference]: Finished difference Result 111 states and 134 transitions. [2022-11-03 03:34:03,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-03 03:34:03,952 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.875) internal successors, (30), 14 states have internal predecessors, (30), 9 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 8 states have call predecessors, (19), 7 states have call successors, (19) Word has length 63 [2022-11-03 03:34:03,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:34:03,955 INFO L225 Difference]: With dead ends: 111 [2022-11-03 03:34:03,955 INFO L226 Difference]: Without dead ends: 99 [2022-11-03 03:34:03,956 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 157 SyntacticMatches, 4 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 305 ImplicationChecksByTransitivity, 11.3s TimeCoverageRelationStatistics Valid=163, Invalid=1027, Unknown=0, NotChecked=0, Total=1190 [2022-11-03 03:34:03,957 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 55 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 389 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 501 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-11-03 03:34:03,958 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 115 Invalid, 501 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 389 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2022-11-03 03:34:03,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2022-11-03 03:34:03,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 86. [2022-11-03 03:34:03,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 51 states have (on average 1.0980392156862746) internal successors, (56), 54 states have internal predecessors, (56), 22 states have call successors, (22), 12 states have call predecessors, (22), 12 states have return successors, (21), 19 states have call predecessors, (21), 21 states have call successors, (21) [2022-11-03 03:34:03,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 99 transitions. [2022-11-03 03:34:03,986 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 99 transitions. Word has length 63 [2022-11-03 03:34:03,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:34:03,987 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 99 transitions. [2022-11-03 03:34:03,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.875) internal successors, (30), 14 states have internal predecessors, (30), 9 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 8 states have call predecessors, (19), 7 states have call successors, (19) [2022-11-03 03:34:03,988 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 99 transitions. [2022-11-03 03:34:03,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-03 03:34:03,989 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:34:03,989 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 9, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:34:04,029 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b08f1663-fb6f-457a-ac67-aa7f47f100f8/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-03 03:34:04,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b08f1663-fb6f-457a-ac67-aa7f47f100f8/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-03 03:34:04,190 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:34:04,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:34:04,191 INFO L85 PathProgramCache]: Analyzing trace with hash 1699758119, now seen corresponding path program 2 times [2022-11-03 03:34:04,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:34:04,191 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042609615] [2022-11-03 03:34:04,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:34:04,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:34:04,201 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 03:34:04,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1244462978] [2022-11-03 03:34:04,201 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-03 03:34:04,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:34:04,202 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b08f1663-fb6f-457a-ac67-aa7f47f100f8/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:34:04,203 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b08f1663-fb6f-457a-ac67-aa7f47f100f8/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:34:04,220 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b08f1663-fb6f-457a-ac67-aa7f47f100f8/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-03 03:34:04,289 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-03 03:34:04,289 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 03:34:04,291 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 32 conjunts are in the unsatisfiable core [2022-11-03 03:34:04,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:34:04,798 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 24 proven. 28 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2022-11-03 03:34:04,798 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:34:06,537 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 27 proven. 23 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2022-11-03 03:34:06,537 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:34:06,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042609615] [2022-11-03 03:34:06,537 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-03 03:34:06,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1244462978] [2022-11-03 03:34:06,537 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1244462978] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:34:06,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1028638375] [2022-11-03 03:34:06,540 INFO L159 IcfgInterpreter]: Started Sifa with 23 locations of interest [2022-11-03 03:34:06,540 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 03:34:06,540 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 03:34:06,540 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 03:34:06,540 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 03:34:09,085 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 18 for LOIs [2022-11-03 03:34:09,097 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 8 for LOIs [2022-11-03 03:34:09,100 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 03:34:10,649 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2827#(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 03:34:10,649 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 03:34:10,649 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-03 03:34:10,650 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9] total 17 [2022-11-03 03:34:10,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775344404] [2022-11-03 03:34:10,650 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-03 03:34:10,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-03 03:34:10,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:34:10,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-03 03:34:10,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=711, Unknown=0, NotChecked=0, Total=812 [2022-11-03 03:34:10,652 INFO L87 Difference]: Start difference. First operand 86 states and 99 transitions. Second operand has 17 states, 16 states have (on average 2.0) internal successors, (32), 13 states have internal predecessors, (32), 7 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (24), 10 states have call predecessors, (24), 7 states have call successors, (24) [2022-11-03 03:34:13,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:34:13,742 INFO L93 Difference]: Finished difference Result 110 states and 131 transitions. [2022-11-03 03:34:13,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-03 03:34:13,743 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.0) internal successors, (32), 13 states have internal predecessors, (32), 7 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (24), 10 states have call predecessors, (24), 7 states have call successors, (24) Word has length 68 [2022-11-03 03:34:13,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:34:13,744 INFO L225 Difference]: With dead ends: 110 [2022-11-03 03:34:13,744 INFO L226 Difference]: Without dead ends: 91 [2022-11-03 03:34:13,745 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 165 SyntacticMatches, 13 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 530 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=169, Invalid=1163, Unknown=0, NotChecked=0, Total=1332 [2022-11-03 03:34:13,746 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 61 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 381 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 503 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-03 03:34:13,746 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 106 Invalid, 503 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 381 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-03 03:34:13,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2022-11-03 03:34:13,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2022-11-03 03:34:13,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 53 states have (on average 1.0754716981132075) internal successors, (57), 56 states have internal predecessors, (57), 25 states have call successors, (25), 12 states have call predecessors, (25), 12 states have return successors, (23), 22 states have call predecessors, (23), 23 states have call successors, (23) [2022-11-03 03:34:13,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 105 transitions. [2022-11-03 03:34:13,777 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 105 transitions. Word has length 68 [2022-11-03 03:34:13,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:34:13,777 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 105 transitions. [2022-11-03 03:34:13,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.0) internal successors, (32), 13 states have internal predecessors, (32), 7 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (24), 10 states have call predecessors, (24), 7 states have call successors, (24) [2022-11-03 03:34:13,778 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 105 transitions. [2022-11-03 03:34:13,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-03 03:34:13,779 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:34:13,779 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:34:13,818 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b08f1663-fb6f-457a-ac67-aa7f47f100f8/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-03 03:34:14,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b08f1663-fb6f-457a-ac67-aa7f47f100f8/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-03 03:34:14,007 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:34:14,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:34:14,007 INFO L85 PathProgramCache]: Analyzing trace with hash 1987386298, now seen corresponding path program 1 times [2022-11-03 03:34:14,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:34:14,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432417143] [2022-11-03 03:34:14,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:34:14,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:34:14,017 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 03:34:14,018 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1562049293] [2022-11-03 03:34:14,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:34:14,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:34:14,018 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b08f1663-fb6f-457a-ac67-aa7f47f100f8/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:34:14,019 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b08f1663-fb6f-457a-ac67-aa7f47f100f8/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:34:14,052 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b08f1663-fb6f-457a-ac67-aa7f47f100f8/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-03 03:34:14,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:34:14,098 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-03 03:34:14,100 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:34:15,298 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 45 proven. 13 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2022-11-03 03:34:15,299 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:34:25,518 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 43 proven. 13 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2022-11-03 03:34:25,518 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:34:25,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432417143] [2022-11-03 03:34:25,519 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-03 03:34:25,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1562049293] [2022-11-03 03:34:25,519 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1562049293] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:34:25,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [320253171] [2022-11-03 03:34:25,524 INFO L159 IcfgInterpreter]: Started Sifa with 24 locations of interest [2022-11-03 03:34:25,525 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 03:34:25,525 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 03:34:25,525 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 03:34:25,525 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 03:34:27,920 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 8 for LOIs [2022-11-03 03:34:27,925 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 8 for LOIs [2022-11-03 03:34:27,926 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 03:34:30,743 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3618#(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 03:34:30,744 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 03:34:30,744 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-03 03:34:30,744 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12] total 21 [2022-11-03 03:34:30,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101827572] [2022-11-03 03:34:30,744 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-03 03:34:30,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-03 03:34:30,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:34:30,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-03 03:34:30,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=979, Unknown=0, NotChecked=0, Total=1122 [2022-11-03 03:34:30,746 INFO L87 Difference]: Start difference. First operand 91 states and 105 transitions. Second operand has 21 states, 18 states have (on average 1.8333333333333333) internal successors, (33), 17 states have internal predecessors, (33), 13 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (24), 10 states have call predecessors, (24), 11 states have call successors, (24) [2022-11-03 03:34:56,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:34:56,586 INFO L93 Difference]: Finished difference Result 128 states and 155 transitions. [2022-11-03 03:34:56,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-03 03:34:56,587 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 18 states have (on average 1.8333333333333333) internal successors, (33), 17 states have internal predecessors, (33), 13 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (24), 10 states have call predecessors, (24), 11 states have call successors, (24) Word has length 74 [2022-11-03 03:34:56,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:34:56,588 INFO L225 Difference]: With dead ends: 128 [2022-11-03 03:34:56,588 INFO L226 Difference]: Without dead ends: 109 [2022-11-03 03:34:56,589 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 184 SyntacticMatches, 4 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 636 ImplicationChecksByTransitivity, 21.1s TimeCoverageRelationStatistics Valid=288, Invalid=1782, Unknown=0, NotChecked=0, Total=2070 [2022-11-03 03:34:56,590 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 84 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 578 mSolverCounterSat, 169 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 747 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 169 IncrementalHoareTripleChecker+Valid, 578 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.7s IncrementalHoareTripleChecker+Time [2022-11-03 03:34:56,590 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 100 Invalid, 747 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [169 Valid, 578 Invalid, 0 Unknown, 0 Unchecked, 11.7s Time] [2022-11-03 03:34:56,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2022-11-03 03:34:56,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 105. [2022-11-03 03:34:56,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 60 states have (on average 1.1) internal successors, (66), 63 states have internal predecessors, (66), 31 states have call successors, (31), 13 states have call predecessors, (31), 13 states have return successors, (30), 28 states have call predecessors, (30), 30 states have call successors, (30) [2022-11-03 03:34:56,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 127 transitions. [2022-11-03 03:34:56,637 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 127 transitions. Word has length 74 [2022-11-03 03:34:56,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:34:56,638 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 127 transitions. [2022-11-03 03:34:56,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 18 states have (on average 1.8333333333333333) internal successors, (33), 17 states have internal predecessors, (33), 13 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (24), 10 states have call predecessors, (24), 11 states have call successors, (24) [2022-11-03 03:34:56,638 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 127 transitions. [2022-11-03 03:34:56,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-03 03:34:56,640 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:34:56,640 INFO L195 NwaCegarLoop]: trace histogram [14, 13, 13, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:34:56,666 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b08f1663-fb6f-457a-ac67-aa7f47f100f8/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-03 03:34:56,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b08f1663-fb6f-457a-ac67-aa7f47f100f8/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:34:56,847 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:34:56,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:34:56,848 INFO L85 PathProgramCache]: Analyzing trace with hash 339357760, now seen corresponding path program 3 times [2022-11-03 03:34:56,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:34:56,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412173345] [2022-11-03 03:34:56,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:34:56,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:34:56,857 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 03:34:56,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [720013852] [2022-11-03 03:34:56,857 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-03 03:34:56,858 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:34:56,858 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b08f1663-fb6f-457a-ac67-aa7f47f100f8/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:34:56,859 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b08f1663-fb6f-457a-ac67-aa7f47f100f8/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:34:56,889 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b08f1663-fb6f-457a-ac67-aa7f47f100f8/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-03 03:34:57,026 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-03 03:34:57,026 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 03:34:57,028 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-03 03:34:57,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:34:58,633 INFO L134 CoverageAnalysis]: Checked inductivity of 367 backedges. 58 proven. 29 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2022-11-03 03:34:58,634 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:35:00,231 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:35:00,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412173345] [2022-11-03 03:35:00,232 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-03 03:35:00,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [720013852] [2022-11-03 03:35:00,232 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [720013852] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:35:00,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1867386940] [2022-11-03 03:35:00,234 INFO L159 IcfgInterpreter]: Started Sifa with 23 locations of interest [2022-11-03 03:35:00,235 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 03:35:00,235 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 03:35:00,235 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 03:35:00,236 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 03:35:04,662 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 8 for LOIs [2022-11-03 03:35:04,667 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 8 for LOIs [2022-11-03 03:35:04,668 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 03:35:05,747 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4319#(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 03:35:05,747 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 03:35:05,747 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-03 03:35:05,747 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2022-11-03 03:35:05,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545048575] [2022-11-03 03:35:05,748 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-03 03:35:05,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-03 03:35:05,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:35:05,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-03 03:35:05,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=712, Unknown=0, NotChecked=0, Total=812 [2022-11-03 03:35:05,750 INFO L87 Difference]: Start difference. First operand 105 states and 127 transitions. Second operand has 15 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 13 states have internal predecessors, (25), 9 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 6 states have call predecessors, (16), 8 states have call successors, (16) [2022-11-03 03:35:07,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:35:07,740 INFO L93 Difference]: Finished difference Result 160 states and 189 transitions. [2022-11-03 03:35:07,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-03 03:35:07,740 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 13 states have internal predecessors, (25), 9 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 6 states have call predecessors, (16), 8 states have call successors, (16) Word has length 92 [2022-11-03 03:35:07,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:35:07,742 INFO L225 Difference]: With dead ends: 160 [2022-11-03 03:35:07,742 INFO L226 Difference]: Without dead ends: 91 [2022-11-03 03:35:07,743 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 159 SyntacticMatches, 4 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 356 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=124, Invalid=932, Unknown=0, NotChecked=0, Total=1056 [2022-11-03 03:35:07,743 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 27 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 490 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 533 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 490 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-03 03:35:07,744 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 160 Invalid, 533 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 490 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-03 03:35:07,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2022-11-03 03:35:07,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2022-11-03 03:35:07,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 55 states have (on average 1.0363636363636364) internal successors, (57), 56 states have internal predecessors, (57), 22 states have call successors, (22), 13 states have call predecessors, (22), 13 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2022-11-03 03:35:07,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 100 transitions. [2022-11-03 03:35:07,779 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 100 transitions. Word has length 92 [2022-11-03 03:35:07,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:35:07,779 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 100 transitions. [2022-11-03 03:35:07,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 13 states have internal predecessors, (25), 9 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 6 states have call predecessors, (16), 8 states have call successors, (16) [2022-11-03 03:35:07,780 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 100 transitions. [2022-11-03 03:35:07,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-11-03 03:35:07,781 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:35:07,781 INFO L195 NwaCegarLoop]: trace histogram [15, 14, 14, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:35:07,807 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b08f1663-fb6f-457a-ac67-aa7f47f100f8/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-03 03:35:07,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b08f1663-fb6f-457a-ac67-aa7f47f100f8/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-03 03:35:07,984 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:35:07,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:35:07,986 INFO L85 PathProgramCache]: Analyzing trace with hash -335545181, now seen corresponding path program 4 times [2022-11-03 03:35:07,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:35:07,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651332296] [2022-11-03 03:35:07,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:35:07,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:35:07,996 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 03:35:07,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [368505303] [2022-11-03 03:35:07,997 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-03 03:35:07,997 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:35:07,997 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b08f1663-fb6f-457a-ac67-aa7f47f100f8/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:35:07,998 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b08f1663-fb6f-457a-ac67-aa7f47f100f8/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:35:08,008 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b08f1663-fb6f-457a-ac67-aa7f47f100f8/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-03 03:35:08,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:35:08,150 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 32 conjunts are in the unsatisfiable core [2022-11-03 03:35:08,153 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:35:08,580 INFO L134 CoverageAnalysis]: Checked inductivity of 423 backedges. 28 proven. 27 refuted. 0 times theorem prover too weak. 368 trivial. 0 not checked. [2022-11-03 03:35:08,580 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:35:45,169 INFO L134 CoverageAnalysis]: Checked inductivity of 423 backedges. 28 proven. 25 refuted. 0 times theorem prover too weak. 370 trivial. 0 not checked. [2022-11-03 03:35:45,169 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:35:45,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651332296] [2022-11-03 03:35:45,169 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-03 03:35:45,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [368505303] [2022-11-03 03:35:45,170 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [368505303] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:35:45,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [449519223] [2022-11-03 03:35:45,172 INFO L159 IcfgInterpreter]: Started Sifa with 23 locations of interest [2022-11-03 03:35:45,172 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 03:35:45,172 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 03:35:45,173 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 03:35:45,173 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 03:35:47,427 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 8 for LOIs [2022-11-03 03:35:47,431 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 8 for LOIs [2022-11-03 03:35:47,432 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 03:35:50,155 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5305#(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 03:35:50,155 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 03:35:50,155 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-03 03:35:50,155 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 18 [2022-11-03 03:35:50,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204045307] [2022-11-03 03:35:50,156 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-03 03:35:50,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-03 03:35:50,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:35:50,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-03 03:35:50,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=755, Unknown=0, NotChecked=0, Total=870 [2022-11-03 03:35:50,158 INFO L87 Difference]: Start difference. First operand 91 states and 100 transitions. Second operand has 18 states, 17 states have (on average 2.0588235294117645) internal successors, (35), 17 states have internal predecessors, (35), 14 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (34), 14 states have call predecessors, (34), 14 states have call successors, (34) [2022-11-03 03:35:53,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:35:53,947 INFO L93 Difference]: Finished difference Result 95 states and 104 transitions. [2022-11-03 03:35:53,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 03:35:53,948 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.0588235294117645) internal successors, (35), 17 states have internal predecessors, (35), 14 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (34), 14 states have call predecessors, (34), 14 states have call successors, (34) Word has length 97 [2022-11-03 03:35:53,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:35:53,949 INFO L225 Difference]: With dead ends: 95 [2022-11-03 03:35:53,949 INFO L226 Difference]: Without dead ends: 0 [2022-11-03 03:35:53,950 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 257 SyntacticMatches, 4 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 278 ImplicationChecksByTransitivity, 10.0s TimeCoverageRelationStatistics Valid=179, Invalid=1153, Unknown=0, NotChecked=0, Total=1332 [2022-11-03 03:35:53,951 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 27 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 375 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 375 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-11-03 03:35:53,951 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 196 Invalid, 442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 375 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-11-03 03:35:53,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-03 03:35:53,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-03 03:35:53,952 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 03:35:53,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-03 03:35:53,952 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 97 [2022-11-03 03:35:53,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:35:53,952 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-03 03:35:53,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.0588235294117645) internal successors, (35), 17 states have internal predecessors, (35), 14 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (34), 14 states have call predecessors, (34), 14 states have call successors, (34) [2022-11-03 03:35:53,953 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-03 03:35:53,953 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-03 03:35:53,955 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-03 03:35:53,981 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b08f1663-fb6f-457a-ac67-aa7f47f100f8/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-03 03:35:54,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b08f1663-fb6f-457a-ac67-aa7f47f100f8/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-03 03:35:54,164 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-03 03:36:13,609 INFO L895 garLoopResultBuilder]: At program point L60(line 60) the Hoare annotation is: (and (= |ULTIMATE.start_main_~p~0#1| 1) (= |ULTIMATE.start_main_~d~0#1| (mod |ULTIMATE.start_main_~B~0#1| 4294967296))) [2022-11-03 03:36:13,609 INFO L899 garLoopResultBuilder]: For program point L48(lines 46 58) no Hoare annotation was computed. [2022-11-03 03:36:13,609 INFO L895 garLoopResultBuilder]: At program point L36-2(lines 36 44) the Hoare annotation is: (let ((.cse0 (mod |ULTIMATE.start_main_~B~0#1| 4294967296)) (.cse7 (mod |ULTIMATE.start_main_~A~0#1| 4294967296))) (let ((.cse4 (= (+ (* |ULTIMATE.start_main_~q~0#1| .cse0) |ULTIMATE.start_main_~r~0#1|) .cse7)) (.cse1 (<= 1 .cse0)) (.cse6 (* 2 .cse0)) (.cse2 (<= |ULTIMATE.start_main_~r~0#1| 2)) (.cse3 (= (* |ULTIMATE.start_main_~p~0#1| .cse0) |ULTIMATE.start_main_~d~0#1|)) (.cse5 (= |ULTIMATE.start_main_~r~0#1| .cse7))) (or (and (= |ULTIMATE.start_main_~d~0#1| .cse0) .cse1 .cse2 .cse3 .cse4 .cse5) (and .cse1 (<= .cse0 |ULTIMATE.start_main_~r~0#1|) (= .cse6 |ULTIMATE.start_main_~d~0#1|) .cse2 .cse3 .cse4 .cse5) (and (= |ULTIMATE.start_main_~d~0#1| (* 4 .cse0)) .cse1 (<= .cse6 |ULTIMATE.start_main_~r~0#1|) .cse2 (= |ULTIMATE.start_main_~q~0#1| 0) .cse3 .cse5)))) [2022-11-03 03:36:13,609 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-03 03:36:13,610 INFO L902 garLoopResultBuilder]: At program point L61(line 61) the Hoare annotation is: true [2022-11-03 03:36:13,610 INFO L895 garLoopResultBuilder]: At program point L28(line 28) the Hoare annotation is: (<= (mod |ULTIMATE.start_main_~A~0#1| 4294967296) 2) [2022-11-03 03:36:13,610 INFO L895 garLoopResultBuilder]: At program point L28-1(line 28) the Hoare annotation is: (<= (mod |ULTIMATE.start_main_~A~0#1| 4294967296) 2) [2022-11-03 03:36:13,610 INFO L895 garLoopResultBuilder]: At program point L37(line 37) the Hoare annotation is: (let ((.cse0 (mod |ULTIMATE.start_main_~B~0#1| 4294967296)) (.cse7 (mod |ULTIMATE.start_main_~A~0#1| 4294967296))) (let ((.cse4 (= (+ (* |ULTIMATE.start_main_~q~0#1| .cse0) |ULTIMATE.start_main_~r~0#1|) .cse7)) (.cse1 (<= 1 .cse0)) (.cse6 (* 2 .cse0)) (.cse2 (<= |ULTIMATE.start_main_~r~0#1| 2)) (.cse3 (= (* |ULTIMATE.start_main_~p~0#1| .cse0) |ULTIMATE.start_main_~d~0#1|)) (.cse5 (= |ULTIMATE.start_main_~r~0#1| .cse7))) (or (and (= |ULTIMATE.start_main_~d~0#1| .cse0) .cse1 .cse2 .cse3 .cse4 .cse5) (and .cse1 (<= .cse0 |ULTIMATE.start_main_~r~0#1|) (= .cse6 |ULTIMATE.start_main_~d~0#1|) .cse2 .cse3 .cse4 .cse5) (and (= |ULTIMATE.start_main_~d~0#1| (* 4 .cse0)) .cse1 (<= .cse6 |ULTIMATE.start_main_~r~0#1|) .cse2 (= |ULTIMATE.start_main_~q~0#1| 0) .cse3 .cse5)))) [2022-11-03 03:36:13,610 INFO L895 garLoopResultBuilder]: At program point L37-1(line 37) the Hoare annotation is: (let ((.cse0 (mod |ULTIMATE.start_main_~B~0#1| 4294967296)) (.cse7 (mod |ULTIMATE.start_main_~A~0#1| 4294967296))) (let ((.cse4 (= (+ (* |ULTIMATE.start_main_~q~0#1| .cse0) |ULTIMATE.start_main_~r~0#1|) .cse7)) (.cse1 (<= 1 .cse0)) (.cse6 (* 2 .cse0)) (.cse2 (<= |ULTIMATE.start_main_~r~0#1| 2)) (.cse3 (= (* |ULTIMATE.start_main_~p~0#1| .cse0) |ULTIMATE.start_main_~d~0#1|)) (.cse5 (= |ULTIMATE.start_main_~r~0#1| .cse7))) (or (and (= |ULTIMATE.start_main_~d~0#1| .cse0) .cse1 .cse2 .cse3 .cse4 .cse5) (and .cse1 (<= .cse0 |ULTIMATE.start_main_~r~0#1|) (= .cse6 |ULTIMATE.start_main_~d~0#1|) .cse2 .cse3 .cse4 .cse5) (and (= |ULTIMATE.start_main_~d~0#1| (* 4 .cse0)) .cse1 (<= .cse6 |ULTIMATE.start_main_~r~0#1|) .cse2 (= |ULTIMATE.start_main_~q~0#1| 0) .cse3 .cse5)))) [2022-11-03 03:36:13,610 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-03 03:36:13,610 INFO L899 garLoopResultBuilder]: For program point L29(line 29) no Hoare annotation was computed. [2022-11-03 03:36:13,611 INFO L895 garLoopResultBuilder]: At program point L54-2(lines 22 63) the Hoare annotation is: (let ((.cse13 (mod |ULTIMATE.start_main_~B~0#1| 4294967296))) (let ((.cse14 (not (<= |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~r~0#1|))) (.cse12 (* |ULTIMATE.start_main_~q~0#1| .cse13)) (.cse15 (* |ULTIMATE.start_main_~p~0#1| .cse13)) (.cse6 (mod |ULTIMATE.start_main_~A~0#1| 4294967296)) (.cse9 (* 2 .cse13))) (let ((.cse0 (= |ULTIMATE.start_main_~p~0#1| 1)) (.cse10 (<= 1 .cse9)) (.cse4 (= .cse9 |ULTIMATE.start_main_~d~0#1|)) (.cse2 (= |ULTIMATE.start_main_~r~0#1| .cse6)) (.cse11 (= |ULTIMATE.start_main_~d~0#1| .cse13)) (.cse3 (<= .cse6 2)) (.cse1 (= .cse15 |ULTIMATE.start_main_~d~0#1|)) (.cse7 (= (+ .cse12 |ULTIMATE.start_main_~r~0#1|) .cse6)) (.cse5 (+ |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~r~0#1|)) (.cse8 (or (= (+ |ULTIMATE.start_main_~d~0#1| .cse6) (+ .cse12 .cse15 |ULTIMATE.start_main_~r~0#1|)) .cse14 (<= (* 2 |ULTIMATE.start_main_~d~0#1|) |ULTIMATE.start_main_~r~0#1|)))) (or (and .cse0 (= |ULTIMATE.start_main_~q~0#1| 0) .cse1 .cse2) (and .cse3 .cse4 (<= .cse5 .cse6) .cse1 .cse7 .cse8 (<= .cse9 .cse5) .cse10) (and .cse0 .cse11 .cse3 .cse7 (<= .cse9 .cse12) (<= .cse12 .cse6) .cse10) (and (= |ULTIMATE.start_main_~d~0#1| (* 4 .cse13)) (<= 1 .cse13) (<= .cse9 |ULTIMATE.start_main_~r~0#1|) .cse3 .cse1 .cse7 .cse2) (and .cse14 (<= .cse13 |ULTIMATE.start_main_~r~0#1|) .cse4 (<= |ULTIMATE.start_main_~r~0#1| 2) .cse1 .cse7 .cse2) (and .cse11 .cse3 (not (<= .cse9 .cse6)) .cse1 .cse7 (= .cse5 .cse6) (<= .cse13 .cse6) .cse8))))) [2022-11-03 03:36:13,611 INFO L895 garLoopResultBuilder]: At program point L46-1(lines 46 58) the Hoare annotation is: (let ((.cse9 (mod |ULTIMATE.start_main_~B~0#1| 4294967296))) (let ((.cse3 (* |ULTIMATE.start_main_~q~0#1| .cse9)) (.cse8 (* |ULTIMATE.start_main_~p~0#1| .cse9)) (.cse1 (mod |ULTIMATE.start_main_~A~0#1| 4294967296))) (let ((.cse2 (= |ULTIMATE.start_main_~d~0#1| .cse9)) (.cse5 (<= .cse1 2)) (.cse4 (* 2 .cse9)) (.cse0 (= .cse8 |ULTIMATE.start_main_~d~0#1|)) (.cse6 (= (+ .cse3 |ULTIMATE.start_main_~r~0#1|) .cse1)) (.cse7 (or (= (+ |ULTIMATE.start_main_~d~0#1| .cse1) (+ .cse3 .cse8 |ULTIMATE.start_main_~r~0#1|)) (not (<= |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~r~0#1|)) (<= (* 2 |ULTIMATE.start_main_~d~0#1|) |ULTIMATE.start_main_~r~0#1|)))) (or (and (= |ULTIMATE.start_main_~p~0#1| 1) (= |ULTIMATE.start_main_~q~0#1| 0) .cse0 (= |ULTIMATE.start_main_~r~0#1| .cse1)) (and .cse2 (not (<= (+ .cse3 .cse4) .cse1)) .cse5 .cse0 .cse6 (<= .cse4 .cse3) .cse7 (<= .cse3 .cse1)) (and .cse2 .cse5 (not (<= .cse4 .cse1)) .cse0 .cse6 (= (+ |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~r~0#1|) .cse1) .cse7 (<= (mod |ULTIMATE.start_main_~d~0#1| 4294967296) .cse1)))))) [2022-11-03 03:36:13,611 INFO L895 garLoopResultBuilder]: At program point L38(line 38) the Hoare annotation is: (let ((.cse0 (mod |ULTIMATE.start_main_~B~0#1| 4294967296)) (.cse7 (mod |ULTIMATE.start_main_~A~0#1| 4294967296))) (let ((.cse4 (= (+ (* |ULTIMATE.start_main_~q~0#1| .cse0) |ULTIMATE.start_main_~r~0#1|) .cse7)) (.cse1 (<= 1 .cse0)) (.cse6 (* 2 .cse0)) (.cse2 (<= |ULTIMATE.start_main_~r~0#1| 2)) (.cse3 (= (* |ULTIMATE.start_main_~p~0#1| .cse0) |ULTIMATE.start_main_~d~0#1|)) (.cse5 (= |ULTIMATE.start_main_~r~0#1| .cse7))) (or (and (= |ULTIMATE.start_main_~d~0#1| .cse0) .cse1 .cse2 .cse3 .cse4 .cse5) (and .cse1 (<= .cse0 |ULTIMATE.start_main_~r~0#1|) (= .cse6 |ULTIMATE.start_main_~d~0#1|) .cse2 .cse3 .cse4 .cse5) (and (= |ULTIMATE.start_main_~d~0#1| (* 4 .cse0)) .cse1 (<= .cse6 |ULTIMATE.start_main_~r~0#1|) .cse2 (= |ULTIMATE.start_main_~q~0#1| 0) .cse3 .cse5)))) [2022-11-03 03:36:13,611 INFO L902 garLoopResultBuilder]: At program point L26(line 26) the Hoare annotation is: true [2022-11-03 03:36:13,611 INFO L899 garLoopResultBuilder]: For program point L26-1(line 26) no Hoare annotation was computed. [2022-11-03 03:36:13,611 INFO L895 garLoopResultBuilder]: At program point L47(line 47) the Hoare annotation is: (let ((.cse13 (mod |ULTIMATE.start_main_~B~0#1| 4294967296))) (let ((.cse14 (not (<= |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~r~0#1|))) (.cse12 (* |ULTIMATE.start_main_~q~0#1| .cse13)) (.cse15 (* |ULTIMATE.start_main_~p~0#1| .cse13)) (.cse6 (mod |ULTIMATE.start_main_~A~0#1| 4294967296)) (.cse9 (* 2 .cse13))) (let ((.cse0 (= |ULTIMATE.start_main_~p~0#1| 1)) (.cse10 (<= 1 .cse9)) (.cse4 (= .cse9 |ULTIMATE.start_main_~d~0#1|)) (.cse2 (= |ULTIMATE.start_main_~r~0#1| .cse6)) (.cse11 (= |ULTIMATE.start_main_~d~0#1| .cse13)) (.cse3 (<= .cse6 2)) (.cse1 (= .cse15 |ULTIMATE.start_main_~d~0#1|)) (.cse7 (= (+ .cse12 |ULTIMATE.start_main_~r~0#1|) .cse6)) (.cse5 (+ |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~r~0#1|)) (.cse8 (or (= (+ |ULTIMATE.start_main_~d~0#1| .cse6) (+ .cse12 .cse15 |ULTIMATE.start_main_~r~0#1|)) .cse14 (<= (* 2 |ULTIMATE.start_main_~d~0#1|) |ULTIMATE.start_main_~r~0#1|)))) (or (and .cse0 (= |ULTIMATE.start_main_~q~0#1| 0) .cse1 .cse2) (and .cse3 .cse4 (<= .cse5 .cse6) .cse1 .cse7 .cse8 (<= .cse9 .cse5) .cse10) (and .cse0 .cse11 .cse3 .cse7 (<= .cse9 .cse12) (<= .cse12 .cse6) .cse10) (and (= |ULTIMATE.start_main_~d~0#1| (* 4 .cse13)) (<= 1 .cse13) (<= .cse9 |ULTIMATE.start_main_~r~0#1|) .cse3 .cse1 .cse7 .cse2) (and .cse14 (<= .cse13 |ULTIMATE.start_main_~r~0#1|) .cse4 (<= |ULTIMATE.start_main_~r~0#1| 2) .cse1 .cse7 .cse2) (and .cse11 .cse3 (not (<= .cse9 .cse6)) .cse1 .cse7 (= .cse5 .cse6) (<= .cse13 .cse6) .cse8))))) [2022-11-03 03:36:13,611 INFO L895 garLoopResultBuilder]: At program point L47-1(line 47) the Hoare annotation is: (let ((.cse0 (mod |ULTIMATE.start_main_~B~0#1| 4294967296))) (let ((.cse13 (* |ULTIMATE.start_main_~q~0#1| .cse0)) (.cse8 (mod |ULTIMATE.start_main_~A~0#1| 4294967296)) (.cse10 (* 2 .cse0))) (let ((.cse2 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse1 (= .cse10 |ULTIMATE.start_main_~d~0#1|)) (.cse7 (+ |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~r~0#1|)) (.cse5 (= |ULTIMATE.start_main_~p~0#1| 1)) (.cse12 (= |ULTIMATE.start_main_~d~0#1| .cse0)) (.cse11 (<= 1 .cse10)) (.cse6 (<= .cse8 2)) (.cse3 (= (* |ULTIMATE.start_main_~p~0#1| .cse0) |ULTIMATE.start_main_~d~0#1|)) (.cse9 (= (+ .cse13 |ULTIMATE.start_main_~r~0#1|) .cse8)) (.cse4 (= |ULTIMATE.start_main_~r~0#1| .cse8))) (or (and (not (<= |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~r~0#1|)) (<= .cse0 |ULTIMATE.start_main_~r~0#1|) .cse1 (<= |ULTIMATE.start_main_~r~0#1| 2) .cse2 .cse3 .cse4) (and .cse5 .cse2 .cse3 .cse4) (and .cse6 .cse1 (<= .cse7 .cse8) .cse3 .cse9 (<= .cse10 .cse7) .cse11) (and .cse12 .cse6 (= |ULTIMATE.start_main_~q~0#1| 1) (not (<= .cse10 .cse8)) .cse3 (= .cse7 .cse8) (<= (mod |ULTIMATE.start_main_~d~0#1| 4294967296) .cse8)) (and .cse5 .cse12 .cse6 .cse9 (<= .cse10 .cse13) (<= .cse13 .cse8) .cse11) (and (= |ULTIMATE.start_main_~d~0#1| (* 4 .cse0)) (<= 1 .cse0) (<= .cse10 |ULTIMATE.start_main_~r~0#1|) .cse6 .cse3 .cse9 .cse4))))) [2022-11-03 03:36:13,612 INFO L899 garLoopResultBuilder]: For program point L39(lines 36 44) no Hoare annotation was computed. [2022-11-03 03:36:13,612 INFO L902 garLoopResultBuilder]: At program point assume_abort_if_notENTRY(lines 11 13) the Hoare annotation is: true [2022-11-03 03:36:13,612 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 11 13) no Hoare annotation was computed. [2022-11-03 03:36:13,612 INFO L899 garLoopResultBuilder]: For program point L16(lines 16 17) no Hoare annotation was computed. [2022-11-03 03:36:13,612 INFO L899 garLoopResultBuilder]: For program point L15(lines 15 18) no Hoare annotation was computed. [2022-11-03 03:36:13,612 INFO L902 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 14 20) the Hoare annotation is: true [2022-11-03 03:36:13,612 INFO L899 garLoopResultBuilder]: For program point L15-2(lines 14 20) no Hoare annotation was computed. [2022-11-03 03:36:13,612 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 14 20) no Hoare annotation was computed. [2022-11-03 03:36:13,613 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2022-11-03 03:36:13,616 INFO L444 BasicCegarLoop]: Path program histogram: [4, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:36:13,618 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-03 03:36:13,638 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 03:36:13 BoogieIcfgContainer [2022-11-03 03:36:13,639 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-03 03:36:13,639 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-03 03:36:13,639 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-03 03:36:13,639 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-03 03:36:13,640 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:33:31" (3/4) ... [2022-11-03 03:36:13,643 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-03 03:36:13,649 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2022-11-03 03:36:13,649 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2022-11-03 03:36:13,653 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2022-11-03 03:36:13,653 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2022-11-03 03:36:13,653 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-11-03 03:36:13,654 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-03 03:36:13,691 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b08f1663-fb6f-457a-ac67-aa7f47f100f8/bin/utaipan-7li7fVZpFI/witness.graphml [2022-11-03 03:36:13,691 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-03 03:36:13,692 INFO L158 Benchmark]: Toolchain (without parser) took 163157.35ms. Allocated memory was 115.3MB in the beginning and 201.3MB in the end (delta: 86.0MB). Free memory was 76.8MB in the beginning and 144.0MB in the end (delta: -67.2MB). Peak memory consumption was 18.5MB. Max. memory is 16.1GB. [2022-11-03 03:36:13,692 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 115.3MB. Free memory is still 92.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 03:36:13,692 INFO L158 Benchmark]: CACSL2BoogieTranslator took 305.40ms. Allocated memory is still 115.3MB. Free memory was 76.6MB in the beginning and 90.6MB in the end (delta: -14.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-03 03:36:13,693 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.70ms. Allocated memory is still 115.3MB. Free memory was 90.6MB in the beginning and 89.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-03 03:36:13,693 INFO L158 Benchmark]: Boogie Preprocessor took 21.65ms. Allocated memory is still 115.3MB. Free memory was 89.0MB in the beginning and 88.0MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 03:36:13,693 INFO L158 Benchmark]: RCFGBuilder took 327.41ms. Allocated memory is still 115.3MB. Free memory was 88.0MB in the beginning and 75.5MB in the end (delta: 12.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-03 03:36:13,694 INFO L158 Benchmark]: TraceAbstraction took 162409.20ms. Allocated memory was 115.3MB in the beginning and 201.3MB in the end (delta: 86.0MB). Free memory was 74.8MB in the beginning and 147.1MB in the end (delta: -72.3MB). Peak memory consumption was 109.2MB. Max. memory is 16.1GB. [2022-11-03 03:36:13,694 INFO L158 Benchmark]: Witness Printer took 52.23ms. Allocated memory is still 201.3MB. Free memory was 147.1MB in the beginning and 144.0MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-03 03:36:13,696 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 115.3MB. Free memory is still 92.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 305.40ms. Allocated memory is still 115.3MB. Free memory was 76.6MB in the beginning and 90.6MB in the end (delta: -14.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 31.70ms. Allocated memory is still 115.3MB. Free memory was 90.6MB in the beginning and 89.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 21.65ms. Allocated memory is still 115.3MB. Free memory was 89.0MB in the beginning and 88.0MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 327.41ms. Allocated memory is still 115.3MB. Free memory was 88.0MB in the beginning and 75.5MB in the end (delta: 12.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 162409.20ms. Allocated memory was 115.3MB in the beginning and 201.3MB in the end (delta: 86.0MB). Free memory was 74.8MB in the beginning and 147.1MB in the end (delta: -72.3MB). Peak memory consumption was 109.2MB. Max. memory is 16.1GB. * Witness Printer took 52.23ms. Allocated memory is still 201.3MB. Free memory was 147.1MB in the beginning and 144.0MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 17]: 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: 162.3s, OverallIterations: 11, TraceHistogramMax: 15, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 45.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 19.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 346 SdHoareTripleChecker+Valid, 24.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 308 mSDsluCounter, 1261 SdHoareTripleChecker+Invalid, 23.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1016 mSDsCounter, 531 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2528 IncrementalHoareTripleChecker+Invalid, 3059 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 531 mSolverCounterUnsat, 339 mSDtfsCounter, 2528 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1367 GetRequests, 1121 SyntacticMatches, 33 SemanticMatches, 213 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2128 ImplicationChecksByTransitivity, 48.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=105occurred in iteration=9, InterpolantAutomatonStates: 113, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 11 MinimizatonAttempts, 37 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 15 LocationsWithAnnotation, 86 PreInvPairs, 135 NumberOfFragments, 1603 HoareAnnotationTreeSize, 86 FomulaSimplifications, 429 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 15 FomulaSimplificationsInter, 11025 FormulaSimplificationTreeSizeReductionInter, 19.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 68.5s InterpolantComputationTime, 583 NumberOfCodeBlocks, 556 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 946 ConstructedInterpolants, 0 QuantifiedInterpolants, 15408 SizeOfPredicates, 39 NumberOfNonLiveVariables, 1310 ConjunctsInSsa, 198 ConjunctsInUnsatCore, 17 InterpolantComputations, 6 PerfectInterpolantSequences, 2319/2529 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: (((((((p == 1 && q == 0) && p * (B % 4294967296) == d) && r == A % 4294967296) || (((((((A % 4294967296 <= 2 && 2 * (B % 4294967296) == d) && d + r <= A % 4294967296) && p * (B % 4294967296) == d) && q * (B % 4294967296) + r == A % 4294967296) && ((d + A % 4294967296 == q * (B % 4294967296) + p * (B % 4294967296) + r || !(d <= r)) || 2 * d <= r)) && 2 * (B % 4294967296) <= d + r) && 1 <= 2 * (B % 4294967296))) || ((((((p == 1 && d == B % 4294967296) && A % 4294967296 <= 2) && q * (B % 4294967296) + r == A % 4294967296) && 2 * (B % 4294967296) <= q * (B % 4294967296)) && q * (B % 4294967296) <= A % 4294967296) && 1 <= 2 * (B % 4294967296))) || ((((((d == 4 * (B % 4294967296) && 1 <= B % 4294967296) && 2 * (B % 4294967296) <= r) && A % 4294967296 <= 2) && p * (B % 4294967296) == d) && q * (B % 4294967296) + r == A % 4294967296) && r == A % 4294967296)) || ((((((!(d <= r) && B % 4294967296 <= r) && 2 * (B % 4294967296) == d) && r <= 2) && p * (B % 4294967296) == d) && q * (B % 4294967296) + r == A % 4294967296) && r == A % 4294967296)) || (((((((d == B % 4294967296 && A % 4294967296 <= 2) && !(2 * (B % 4294967296) <= A % 4294967296)) && p * (B % 4294967296) == d) && q * (B % 4294967296) + r == A % 4294967296) && d + r == A % 4294967296) && B % 4294967296 <= A % 4294967296) && ((d + A % 4294967296 == q * (B % 4294967296) + p * (B % 4294967296) + r || !(d <= r)) || 2 * d <= r)) - InvariantResult [Line: 61]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: ((((((d == B % 4294967296 && 1 <= B % 4294967296) && r <= 2) && p * (B % 4294967296) == d) && q * (B % 4294967296) + r == A % 4294967296) && r == A % 4294967296) || ((((((1 <= B % 4294967296 && B % 4294967296 <= r) && 2 * (B % 4294967296) == d) && r <= 2) && p * (B % 4294967296) == d) && q * (B % 4294967296) + r == A % 4294967296) && r == A % 4294967296)) || ((((((d == 4 * (B % 4294967296) && 1 <= B % 4294967296) && 2 * (B % 4294967296) <= r) && r <= 2) && q == 0) && p * (B % 4294967296) == d) && r == A % 4294967296) RESULT: Ultimate proved your program to be correct! [2022-11-03 03:36:13,802 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b08f1663-fb6f-457a-ac67-aa7f47f100f8/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE