./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound10.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 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_2ba42edb-4c85-4caf-a25e-d4332abe072f/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba42edb-4c85-4caf-a25e-d4332abe072f/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba42edb-4c85-4caf-a25e-d4332abe072f/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba42edb-4c85-4caf-a25e-d4332abe072f/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound10.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba42edb-4c85-4caf-a25e-d4332abe072f/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba42edb-4c85-4caf-a25e-d4332abe072f/bin/utaipan-gh47qXpMRh --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 174cfd8cb6426614b32355f584844d4fc6265ba8fd3c3cda6c788ade64de4fc0 --- 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-2329fc7 [2022-12-14 08:44:17,336 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 08:44:17,338 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 08:44:17,357 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 08:44:17,357 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 08:44:17,358 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 08:44:17,360 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 08:44:17,361 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 08:44:17,363 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 08:44:17,364 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 08:44:17,365 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 08:44:17,366 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 08:44:17,366 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 08:44:17,367 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 08:44:17,368 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 08:44:17,369 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 08:44:17,370 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 08:44:17,371 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 08:44:17,373 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 08:44:17,375 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 08:44:17,376 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 08:44:17,377 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 08:44:17,378 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 08:44:17,379 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 08:44:17,383 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 08:44:17,383 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 08:44:17,384 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 08:44:17,385 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 08:44:17,385 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 08:44:17,386 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 08:44:17,386 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 08:44:17,387 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 08:44:17,388 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 08:44:17,388 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 08:44:17,389 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 08:44:17,390 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 08:44:17,390 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 08:44:17,390 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 08:44:17,391 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 08:44:17,391 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 08:44:17,392 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 08:44:17,393 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba42edb-4c85-4caf-a25e-d4332abe072f/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 08:44:17,415 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 08:44:17,416 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 08:44:17,416 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 08:44:17,416 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 08:44:17,417 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 08:44:17,417 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 08:44:17,417 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 08:44:17,418 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 08:44:17,418 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 08:44:17,418 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 08:44:17,418 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 08:44:17,418 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 08:44:17,418 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 08:44:17,419 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 08:44:17,419 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 08:44:17,419 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 08:44:17,419 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 08:44:17,420 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 08:44:17,420 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 08:44:17,420 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 08:44:17,421 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 08:44:17,421 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 08:44:17,421 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 08:44:17,421 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 08:44:17,421 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 08:44:17,421 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 08:44:17,422 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 08:44:17,422 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 08:44:17,422 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 08:44:17,422 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 08:44:17,422 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 08:44:17,423 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 08:44:17,423 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 08:44:17,423 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 08:44:17,423 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 08:44:17,423 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 08:44:17,424 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 08:44:17,424 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 08:44:17,424 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 08:44:17,424 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 08:44:17,424 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 08:44:17,424 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_2ba42edb-4c85-4caf-a25e-d4332abe072f/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba42edb-4c85-4caf-a25e-d4332abe072f/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 174cfd8cb6426614b32355f584844d4fc6265ba8fd3c3cda6c788ade64de4fc0 [2022-12-14 08:44:17,617 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 08:44:17,634 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 08:44:17,637 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 08:44:17,638 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 08:44:17,638 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 08:44:17,639 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba42edb-4c85-4caf-a25e-d4332abe072f/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound10.c [2022-12-14 08:44:20,163 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 08:44:20,302 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 08:44:20,302 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba42edb-4c85-4caf-a25e-d4332abe072f/sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound10.c [2022-12-14 08:44:20,307 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba42edb-4c85-4caf-a25e-d4332abe072f/bin/utaipan-gh47qXpMRh/data/66502fb03/9536e177c55547a6a7354d1010c17cfd/FLAG302368920 [2022-12-14 08:44:20,730 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba42edb-4c85-4caf-a25e-d4332abe072f/bin/utaipan-gh47qXpMRh/data/66502fb03/9536e177c55547a6a7354d1010c17cfd [2022-12-14 08:44:20,733 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 08:44:20,734 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 08:44:20,735 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 08:44:20,735 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 08:44:20,738 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 08:44:20,738 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 08:44:20" (1/1) ... [2022-12-14 08:44:20,739 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@767a829 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:44:20, skipping insertion in model container [2022-12-14 08:44:20,739 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 08:44:20" (1/1) ... [2022-12-14 08:44:20,744 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 08:44:20,755 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 08:44:20,854 WARN L237 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_2ba42edb-4c85-4caf-a25e-d4332abe072f/sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound10.c[526,539] [2022-12-14 08:44:20,864 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 08:44:20,872 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 08:44:20,881 WARN L237 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_2ba42edb-4c85-4caf-a25e-d4332abe072f/sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound10.c[526,539] [2022-12-14 08:44:20,885 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 08:44:20,894 INFO L208 MainTranslator]: Completed translation [2022-12-14 08:44:20,895 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:44:20 WrapperNode [2022-12-14 08:44:20,895 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 08:44:20,896 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 08:44:20,896 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 08:44:20,896 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 08:44:20,901 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:44:20" (1/1) ... [2022-12-14 08:44:20,906 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:44:20" (1/1) ... [2022-12-14 08:44:20,919 INFO L138 Inliner]: procedures = 14, calls = 23, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 64 [2022-12-14 08:44:20,919 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 08:44:20,920 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 08:44:20,920 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 08:44:20,920 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 08:44:20,927 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:44:20" (1/1) ... [2022-12-14 08:44:20,927 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:44:20" (1/1) ... [2022-12-14 08:44:20,928 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:44:20" (1/1) ... [2022-12-14 08:44:20,928 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:44:20" (1/1) ... [2022-12-14 08:44:20,930 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:44:20" (1/1) ... [2022-12-14 08:44:20,932 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:44:20" (1/1) ... [2022-12-14 08:44:20,933 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:44:20" (1/1) ... [2022-12-14 08:44:20,933 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:44:20" (1/1) ... [2022-12-14 08:44:20,935 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 08:44:20,935 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 08:44:20,935 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 08:44:20,936 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 08:44:20,936 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:44:20" (1/1) ... [2022-12-14 08:44:20,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 08:44:20,949 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba42edb-4c85-4caf-a25e-d4332abe072f/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:44:20,961 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba42edb-4c85-4caf-a25e-d4332abe072f/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 08:44:20,963 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba42edb-4c85-4caf-a25e-d4332abe072f/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 08:44:20,991 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 08:44:20,991 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 08:44:20,991 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 08:44:20,991 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 08:44:20,991 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-12-14 08:44:20,991 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-12-14 08:44:21,041 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 08:44:21,043 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 08:44:21,138 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 08:44:21,169 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 08:44:21,169 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-12-14 08:44:21,171 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 08:44:21 BoogieIcfgContainer [2022-12-14 08:44:21,171 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 08:44:21,173 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 08:44:21,173 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 08:44:21,176 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 08:44:21,176 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 08:44:20" (1/3) ... [2022-12-14 08:44:21,177 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28326a85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 08:44:21, skipping insertion in model container [2022-12-14 08:44:21,177 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:44:20" (2/3) ... [2022-12-14 08:44:21,177 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28326a85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 08:44:21, skipping insertion in model container [2022-12-14 08:44:21,177 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 08:44:21" (3/3) ... [2022-12-14 08:44:21,178 INFO L112 eAbstractionObserver]: Analyzing ICFG hard2_valuebound10.c [2022-12-14 08:44:21,193 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 08:44:21,193 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 08:44:21,226 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 08:44:21,231 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;@790eb56a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 08:44:21,231 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 08:44:21,234 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 10 states have (on average 1.6) internal successors, (16), 11 states have internal predecessors, (16), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-12-14 08:44:21,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-12-14 08:44:21,240 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:44:21,240 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-14 08:44:21,240 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 08:44:21,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:44:21,244 INFO L85 PathProgramCache]: Analyzing trace with hash -697525204, now seen corresponding path program 1 times [2022-12-14 08:44:21,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:44:21,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429542968] [2022-12-14 08:44:21,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:44:21,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:44:21,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:44:21,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:44:21,434 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:44:21,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429542968] [2022-12-14 08:44:21,435 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429542968] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:44:21,435 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:44:21,435 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 08:44:21,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049974413] [2022-12-14 08:44:21,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:44:21,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 08:44:21,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:44:21,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 08:44:21,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 08:44:21,465 INFO L87 Difference]: Start difference. First operand has 20 states, 10 states have (on average 1.6) internal successors, (16), 11 states have internal predecessors, (16), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand has 5 states, 5 states have (on average 1.0) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:44:21,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:44:21,543 INFO L93 Difference]: Finished difference Result 51 states and 87 transitions. [2022-12-14 08:44:21,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 08:44:21,545 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.0) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-12-14 08:44:21,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:44:21,550 INFO L225 Difference]: With dead ends: 51 [2022-12-14 08:44:21,550 INFO L226 Difference]: Without dead ends: 28 [2022-12-14 08:44:21,553 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-14 08:44:21,555 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 11 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 08:44:21,556 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 77 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 08:44:21,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-12-14 08:44:21,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 22. [2022-12-14 08:44:21,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 12 states have (on average 1.25) internal successors, (15), 13 states have internal predecessors, (15), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-12-14 08:44:21,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 28 transitions. [2022-12-14 08:44:21,585 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 28 transitions. Word has length 6 [2022-12-14 08:44:21,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:44:21,585 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 28 transitions. [2022-12-14 08:44:21,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.0) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:44:21,585 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 28 transitions. [2022-12-14 08:44:21,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-14 08:44:21,586 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:44:21,586 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:44:21,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 08:44:21,587 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 08:44:21,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:44:21,587 INFO L85 PathProgramCache]: Analyzing trace with hash -515229903, now seen corresponding path program 1 times [2022-12-14 08:44:21,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:44:21,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875287725] [2022-12-14 08:44:21,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:44:21,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:44:21,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:44:21,668 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:44:21,669 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:44:21,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875287725] [2022-12-14 08:44:21,669 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875287725] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:44:21,669 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:44:21,670 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 08:44:21,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720813855] [2022-12-14 08:44:21,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:44:21,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 08:44:21,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:44:21,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 08:44:21,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 08:44:21,672 INFO L87 Difference]: Start difference. First operand 22 states and 28 transitions. Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-14 08:44:21,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:44:21,717 INFO L93 Difference]: Finished difference Result 34 states and 43 transitions. [2022-12-14 08:44:21,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 08:44:21,718 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), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2022-12-14 08:44:21,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:44:21,719 INFO L225 Difference]: With dead ends: 34 [2022-12-14 08:44:21,719 INFO L226 Difference]: Without dead ends: 32 [2022-12-14 08:44:21,719 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 [2022-12-14 08:44:21,721 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 8 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 08:44:21,722 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 70 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 08:44:21,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-12-14 08:44:21,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 26. [2022-12-14 08:44:21,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 15 states have (on average 1.2) internal successors, (18), 16 states have internal predecessors, (18), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-12-14 08:44:21,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 31 transitions. [2022-12-14 08:44:21,730 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 31 transitions. Word has length 11 [2022-12-14 08:44:21,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:44:21,730 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 31 transitions. [2022-12-14 08:44:21,731 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), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-14 08:44:21,731 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 31 transitions. [2022-12-14 08:44:21,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-12-14 08:44:21,731 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:44:21,731 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:44:21,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 08:44:21,732 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 08:44:21,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:44:21,733 INFO L85 PathProgramCache]: Analyzing trace with hash -1604661492, now seen corresponding path program 1 times [2022-12-14 08:44:21,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:44:21,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803569891] [2022-12-14 08:44:21,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:44:21,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:44:21,748 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 08:44:21,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1027310009] [2022-12-14 08:44:21,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:44:21,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:44:21,749 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba42edb-4c85-4caf-a25e-d4332abe072f/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:44:21,751 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba42edb-4c85-4caf-a25e-d4332abe072f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 08:44:21,752 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba42edb-4c85-4caf-a25e-d4332abe072f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 08:44:21,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:44:21,798 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 19 conjunts are in the unsatisfiable core [2022-12-14 08:44:21,802 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:44:21,921 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 08:44:21,921 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 08:44:22,029 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 08:44:22,030 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:44:22,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803569891] [2022-12-14 08:44:22,030 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 08:44:22,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1027310009] [2022-12-14 08:44:22,031 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1027310009] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 08:44:22,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [65828678] [2022-12-14 08:44:22,051 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2022-12-14 08:44:22,051 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 08:44:22,055 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 08:44:22,060 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 08:44:22,061 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 08:44:22,345 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 66 for LOIs [2022-12-14 08:44:22,357 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 08:44:22,755 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [65828678] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:44:22,755 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-14 08:44:22,755 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8, 7] total 15 [2022-12-14 08:44:22,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961404402] [2022-12-14 08:44:22,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:44:22,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 08:44:22,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:44:22,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 08:44:22,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2022-12-14 08:44:22,757 INFO L87 Difference]: Start difference. First operand 26 states and 31 transitions. Second operand has 5 states, 5 states have (on average 1.4) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-14 08:44:22,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:44:22,895 INFO L93 Difference]: Finished difference Result 61 states and 75 transitions. [2022-12-14 08:44:22,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 08:44:22,895 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.4) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 16 [2022-12-14 08:44:22,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:44:22,896 INFO L225 Difference]: With dead ends: 61 [2022-12-14 08:44:22,896 INFO L226 Difference]: Without dead ends: 43 [2022-12-14 08:44:22,896 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 27 SyntacticMatches, 6 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2022-12-14 08:44:22,897 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 3 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 08:44:22,897 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 51 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 08:44:22,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-12-14 08:44:22,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2022-12-14 08:44:22,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 26 states have (on average 1.1153846153846154) internal successors, (29), 27 states have internal predecessors, (29), 10 states have call successors, (10), 6 states have call predecessors, (10), 6 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-12-14 08:44:22,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 48 transitions. [2022-12-14 08:44:22,905 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 48 transitions. Word has length 16 [2022-12-14 08:44:22,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:44:22,905 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 48 transitions. [2022-12-14 08:44:22,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.4) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-14 08:44:22,905 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 48 transitions. [2022-12-14 08:44:22,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-12-14 08:44:22,906 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:44:22,906 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2022-12-14 08:44:22,912 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba42edb-4c85-4caf-a25e-d4332abe072f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 08:44:23,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba42edb-4c85-4caf-a25e-d4332abe072f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:44:23,106 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 08:44:23,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:44:23,107 INFO L85 PathProgramCache]: Analyzing trace with hash 1042343919, now seen corresponding path program 1 times [2022-12-14 08:44:23,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:44:23,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125313829] [2022-12-14 08:44:23,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:44:23,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:44:23,114 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 08:44:23,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1554617173] [2022-12-14 08:44:23,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:44:23,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:44:23,115 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba42edb-4c85-4caf-a25e-d4332abe072f/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:44:23,116 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba42edb-4c85-4caf-a25e-d4332abe072f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 08:44:23,117 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba42edb-4c85-4caf-a25e-d4332abe072f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 08:44:23,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:44:23,158 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 23 conjunts are in the unsatisfiable core [2022-12-14 08:44:23,160 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:44:23,256 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 9 proven. 17 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-12-14 08:44:23,256 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 08:44:23,354 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 11 proven. 13 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-12-14 08:44:23,354 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:44:23,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125313829] [2022-12-14 08:44:23,355 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 08:44:23,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1554617173] [2022-12-14 08:44:23,355 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1554617173] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 08:44:23,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [302368551] [2022-12-14 08:44:23,357 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2022-12-14 08:44:23,357 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 08:44:23,358 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 08:44:23,358 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 08:44:23,358 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 08:44:25,095 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 18 for LOIs [2022-12-14 08:44:25,103 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 08:44:25,577 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '702#(and (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 08:44:25,577 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 08:44:25,577 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-14 08:44:25,577 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 13 [2022-12-14 08:44:25,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731953018] [2022-12-14 08:44:25,578 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-14 08:44:25,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-14 08:44:25,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:44:25,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-14 08:44:25,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=341, Unknown=0, NotChecked=0, Total=420 [2022-12-14 08:44:25,579 INFO L87 Difference]: Start difference. First operand 43 states and 48 transitions. Second operand has 13 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 11 states have internal predecessors, (21), 5 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (9), 3 states have call predecessors, (9), 5 states have call successors, (9) [2022-12-14 08:44:25,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:44:25,883 INFO L93 Difference]: Finished difference Result 77 states and 98 transitions. [2022-12-14 08:44:25,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-14 08:44:25,883 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 11 states have internal predecessors, (21), 5 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (9), 3 states have call predecessors, (9), 5 states have call successors, (9) Word has length 33 [2022-12-14 08:44:25,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:44:25,885 INFO L225 Difference]: With dead ends: 77 [2022-12-14 08:44:25,885 INFO L226 Difference]: Without dead ends: 64 [2022-12-14 08:44:25,885 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 75 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=95, Invalid=411, Unknown=0, NotChecked=0, Total=506 [2022-12-14 08:44:25,886 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 31 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 08:44:25,886 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 52 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 08:44:25,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-12-14 08:44:25,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2022-12-14 08:44:25,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 36 states have (on average 1.1111111111111112) internal successors, (40), 39 states have internal predecessors, (40), 20 states have call successors, (20), 7 states have call predecessors, (20), 7 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) [2022-12-14 08:44:25,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 78 transitions. [2022-12-14 08:44:25,895 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 78 transitions. Word has length 33 [2022-12-14 08:44:25,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:44:25,895 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 78 transitions. [2022-12-14 08:44:25,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 11 states have internal predecessors, (21), 5 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (9), 3 states have call predecessors, (9), 5 states have call successors, (9) [2022-12-14 08:44:25,895 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 78 transitions. [2022-12-14 08:44:25,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-12-14 08:44:25,896 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:44:25,896 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:44:25,900 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba42edb-4c85-4caf-a25e-d4332abe072f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-14 08:44:26,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba42edb-4c85-4caf-a25e-d4332abe072f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:44:26,098 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 08:44:26,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:44:26,099 INFO L85 PathProgramCache]: Analyzing trace with hash -1798480357, now seen corresponding path program 1 times [2022-12-14 08:44:26,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:44:26,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315244417] [2022-12-14 08:44:26,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:44:26,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:44:26,125 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 08:44:26,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [651994069] [2022-12-14 08:44:26,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:44:26,126 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:44:26,127 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba42edb-4c85-4caf-a25e-d4332abe072f/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:44:26,129 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba42edb-4c85-4caf-a25e-d4332abe072f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 08:44:26,132 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba42edb-4c85-4caf-a25e-d4332abe072f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 08:44:26,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:44:26,166 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 17 conjunts are in the unsatisfiable core [2022-12-14 08:44:26,168 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:44:26,221 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 11 proven. 16 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2022-12-14 08:44:26,222 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 08:44:26,298 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 13 proven. 16 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-12-14 08:44:26,299 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:44:26,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315244417] [2022-12-14 08:44:26,299 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 08:44:26,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [651994069] [2022-12-14 08:44:26,299 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [651994069] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 08:44:26,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [606698128] [2022-12-14 08:44:26,301 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2022-12-14 08:44:26,301 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 08:44:26,302 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 08:44:26,302 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 08:44:26,302 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 08:44:27,935 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 23 for LOIs [2022-12-14 08:44:27,946 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 08:44:28,594 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1175#(and (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 08:44:28,594 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 08:44:28,594 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-14 08:44:28,594 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2022-12-14 08:44:28,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775775230] [2022-12-14 08:44:28,595 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-14 08:44:28,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-14 08:44:28,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:44:28,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-14 08:44:28,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=296, Unknown=0, NotChecked=0, Total=380 [2022-12-14 08:44:28,596 INFO L87 Difference]: Start difference. First operand 64 states and 78 transitions. Second operand has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 10 states have internal predecessors, (24), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) [2022-12-14 08:44:28,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:44:28,715 INFO L93 Difference]: Finished difference Result 73 states and 88 transitions. [2022-12-14 08:44:28,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-14 08:44:28,716 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 10 states have internal predecessors, (24), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) Word has length 40 [2022-12-14 08:44:28,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:44:28,716 INFO L225 Difference]: With dead ends: 73 [2022-12-14 08:44:28,716 INFO L226 Difference]: Without dead ends: 71 [2022-12-14 08:44:28,717 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 98 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=100, Invalid=362, Unknown=0, NotChecked=0, Total=462 [2022-12-14 08:44:28,717 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 16 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 08:44:28,717 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 46 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 08:44:28,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2022-12-14 08:44:28,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 70. [2022-12-14 08:44:28,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 40 states have (on average 1.125) internal successors, (45), 43 states have internal predecessors, (45), 21 states have call successors, (21), 8 states have call predecessors, (21), 8 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2022-12-14 08:44:28,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 85 transitions. [2022-12-14 08:44:28,727 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 85 transitions. Word has length 40 [2022-12-14 08:44:28,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:44:28,727 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 85 transitions. [2022-12-14 08:44:28,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 10 states have internal predecessors, (24), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) [2022-12-14 08:44:28,727 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 85 transitions. [2022-12-14 08:44:28,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-12-14 08:44:28,728 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:44:28,728 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:44:28,732 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba42edb-4c85-4caf-a25e-d4332abe072f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-14 08:44:28,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba42edb-4c85-4caf-a25e-d4332abe072f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:44:28,929 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 08:44:28,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:44:28,931 INFO L85 PathProgramCache]: Analyzing trace with hash -1731990838, now seen corresponding path program 1 times [2022-12-14 08:44:28,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:44:28,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12665880] [2022-12-14 08:44:28,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:44:28,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:44:28,945 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 08:44:28,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [836129980] [2022-12-14 08:44:28,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:44:28,945 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:44:28,945 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba42edb-4c85-4caf-a25e-d4332abe072f/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:44:28,946 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba42edb-4c85-4caf-a25e-d4332abe072f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 08:44:28,947 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba42edb-4c85-4caf-a25e-d4332abe072f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 08:44:28,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:44:28,991 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 32 conjunts are in the unsatisfiable core [2022-12-14 08:44:28,994 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:44:29,203 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 15 proven. 29 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2022-12-14 08:44:29,204 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 08:44:30,384 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 15 proven. 29 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2022-12-14 08:44:30,384 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:44:30,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12665880] [2022-12-14 08:44:30,384 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 08:44:30,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [836129980] [2022-12-14 08:44:30,384 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [836129980] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 08:44:30,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [119991362] [2022-12-14 08:44:30,385 INFO L159 IcfgInterpreter]: Started Sifa with 16 locations of interest [2022-12-14 08:44:30,386 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 08:44:30,386 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 08:44:30,386 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 08:44:30,386 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 08:44:32,428 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 18 for LOIs [2022-12-14 08:44:32,436 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 08:44:33,126 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1727#(and (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 08:44:33,126 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 08:44:33,126 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-14 08:44:33,126 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2022-12-14 08:44:33,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212548899] [2022-12-14 08:44:33,127 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-14 08:44:33,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-12-14 08:44:33,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:44:33,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-12-14 08:44:33,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=582, Unknown=0, NotChecked=0, Total=702 [2022-12-14 08:44:33,128 INFO L87 Difference]: Start difference. First operand 70 states and 85 transitions. Second operand has 17 states, 17 states have (on average 1.7058823529411764) internal successors, (29), 15 states have internal predecessors, (29), 9 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (16), 6 states have call predecessors, (16), 7 states have call successors, (16) [2022-12-14 08:44:34,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:44:34,969 INFO L93 Difference]: Finished difference Result 101 states and 117 transitions. [2022-12-14 08:44:34,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-14 08:44:34,970 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.7058823529411764) internal successors, (29), 15 states have internal predecessors, (29), 9 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (16), 6 states have call predecessors, (16), 7 states have call successors, (16) Word has length 52 [2022-12-14 08:44:34,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:44:34,970 INFO L225 Difference]: With dead ends: 101 [2022-12-14 08:44:34,970 INFO L226 Difference]: Without dead ends: 99 [2022-12-14 08:44:34,971 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 126 SyntacticMatches, 3 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 322 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=196, Invalid=926, Unknown=0, NotChecked=0, Total=1122 [2022-12-14 08:44:34,971 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 31 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 416 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 476 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-12-14 08:44:34,972 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 72 Invalid, 476 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 416 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-12-14 08:44:34,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2022-12-14 08:44:34,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 92. [2022-12-14 08:44:34,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 56 states have (on average 1.0892857142857142) internal successors, (61), 60 states have internal predecessors, (61), 22 states have call successors, (22), 13 states have call predecessors, (22), 13 states have return successors, (20), 18 states have call predecessors, (20), 20 states have call successors, (20) [2022-12-14 08:44:34,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 103 transitions. [2022-12-14 08:44:34,989 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 103 transitions. Word has length 52 [2022-12-14 08:44:34,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:44:34,990 INFO L495 AbstractCegarLoop]: Abstraction has 92 states and 103 transitions. [2022-12-14 08:44:34,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.7058823529411764) internal successors, (29), 15 states have internal predecessors, (29), 9 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (16), 6 states have call predecessors, (16), 7 states have call successors, (16) [2022-12-14 08:44:34,990 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 103 transitions. [2022-12-14 08:44:34,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-12-14 08:44:34,991 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:44:34,991 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:44:34,995 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba42edb-4c85-4caf-a25e-d4332abe072f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-14 08:44:35,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba42edb-4c85-4caf-a25e-d4332abe072f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:44:35,193 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 08:44:35,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:44:35,194 INFO L85 PathProgramCache]: Analyzing trace with hash -1143375622, now seen corresponding path program 1 times [2022-12-14 08:44:35,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:44:35,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220093054] [2022-12-14 08:44:35,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:44:35,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:44:35,201 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 08:44:35,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1980406428] [2022-12-14 08:44:35,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:44:35,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:44:35,202 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba42edb-4c85-4caf-a25e-d4332abe072f/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:44:35,203 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba42edb-4c85-4caf-a25e-d4332abe072f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 08:44:35,204 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba42edb-4c85-4caf-a25e-d4332abe072f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-14 08:44:35,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:44:35,255 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 33 conjunts are in the unsatisfiable core [2022-12-14 08:44:35,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:44:35,434 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 19 proven. 37 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2022-12-14 08:44:35,434 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 08:44:35,810 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 19 proven. 37 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2022-12-14 08:44:35,810 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:44:35,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220093054] [2022-12-14 08:44:35,810 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 08:44:35,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1980406428] [2022-12-14 08:44:35,810 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1980406428] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 08:44:35,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1222566340] [2022-12-14 08:44:35,811 INFO L159 IcfgInterpreter]: Started Sifa with 17 locations of interest [2022-12-14 08:44:35,811 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 08:44:35,811 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 08:44:35,812 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 08:44:35,812 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 08:44:37,639 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 18 for LOIs [2022-12-14 08:44:37,646 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 08:44:38,287 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2425#(and (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 08:44:38,287 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 08:44:38,287 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-14 08:44:38,287 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2022-12-14 08:44:38,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996586519] [2022-12-14 08:44:38,287 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-14 08:44:38,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-12-14 08:44:38,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:44:38,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-12-14 08:44:38,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=621, Unknown=0, NotChecked=0, Total=756 [2022-12-14 08:44:38,289 INFO L87 Difference]: Start difference. First operand 92 states and 103 transitions. Second operand has 17 states, 15 states have (on average 2.066666666666667) internal successors, (31), 15 states have internal predecessors, (31), 9 states have call successors, (22), 3 states have call predecessors, (22), 2 states have return successors, (20), 6 states have call predecessors, (20), 7 states have call successors, (20) [2022-12-14 08:44:41,613 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-14 08:44:41,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:44:41,688 INFO L93 Difference]: Finished difference Result 114 states and 133 transitions. [2022-12-14 08:44:41,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-14 08:44:41,689 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 2.066666666666667) internal successors, (31), 15 states have internal predecessors, (31), 9 states have call successors, (22), 3 states have call predecessors, (22), 2 states have return successors, (20), 6 states have call predecessors, (20), 7 states have call successors, (20) Word has length 63 [2022-12-14 08:44:41,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:44:41,690 INFO L225 Difference]: With dead ends: 114 [2022-12-14 08:44:41,690 INFO L226 Difference]: Without dead ends: 99 [2022-12-14 08:44:41,690 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 157 SyntacticMatches, 4 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=189, Invalid=867, Unknown=0, NotChecked=0, Total=1056 [2022-12-14 08:44:41,691 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 25 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 347 mSolverCounterSat, 43 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 347 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-12-14 08:44:41,691 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 61 Invalid, 391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 347 Invalid, 1 Unknown, 0 Unchecked, 3.1s Time] [2022-12-14 08:44:41,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2022-12-14 08:44:41,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 85. [2022-12-14 08:44:41,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 53 states have (on average 1.0943396226415094) internal successors, (58), 55 states have internal predecessors, (58), 18 states have call successors, (18), 13 states have call predecessors, (18), 13 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17) [2022-12-14 08:44:41,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 93 transitions. [2022-12-14 08:44:41,711 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 93 transitions. Word has length 63 [2022-12-14 08:44:41,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:44:41,711 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 93 transitions. [2022-12-14 08:44:41,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 2.066666666666667) internal successors, (31), 15 states have internal predecessors, (31), 9 states have call successors, (22), 3 states have call predecessors, (22), 2 states have return successors, (20), 6 states have call predecessors, (20), 7 states have call successors, (20) [2022-12-14 08:44:41,712 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 93 transitions. [2022-12-14 08:44:41,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-12-14 08:44:41,712 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:44:41,713 INFO L195 NwaCegarLoop]: trace histogram [13, 12, 12, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:44:41,717 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba42edb-4c85-4caf-a25e-d4332abe072f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-14 08:44:41,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba42edb-4c85-4caf-a25e-d4332abe072f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:44:41,914 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 08:44:41,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:44:41,915 INFO L85 PathProgramCache]: Analyzing trace with hash 2113244439, now seen corresponding path program 1 times [2022-12-14 08:44:41,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:44:41,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145391976] [2022-12-14 08:44:41,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:44:41,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:44:41,925 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 08:44:41,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2085817222] [2022-12-14 08:44:41,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:44:41,925 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:44:41,925 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba42edb-4c85-4caf-a25e-d4332abe072f/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:44:41,926 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba42edb-4c85-4caf-a25e-d4332abe072f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 08:44:41,927 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba42edb-4c85-4caf-a25e-d4332abe072f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-14 08:44:41,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:44:41,974 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 08:44:41,976 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:44:42,002 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2022-12-14 08:44:42,003 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 08:44:42,003 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:44:42,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145391976] [2022-12-14 08:44:42,003 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 08:44:42,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2085817222] [2022-12-14 08:44:42,003 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2085817222] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:44:42,003 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:44:42,003 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 08:44:42,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973219260] [2022-12-14 08:44:42,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:44:42,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 08:44:42,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:44:42,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 08:44:42,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-12-14 08:44:42,004 INFO L87 Difference]: Start difference. First operand 85 states and 93 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 4 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2022-12-14 08:44:42,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:44:42,050 INFO L93 Difference]: Finished difference Result 92 states and 99 transitions. [2022-12-14 08:44:42,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 08:44:42,051 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 4 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) Word has length 73 [2022-12-14 08:44:42,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:44:42,052 INFO L225 Difference]: With dead ends: 92 [2022-12-14 08:44:42,052 INFO L226 Difference]: Without dead ends: 80 [2022-12-14 08:44:42,052 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-12-14 08:44:42,053 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 4 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 08:44:42,054 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 58 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 08:44:42,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2022-12-14 08:44:42,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2022-12-14 08:44:42,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 50 states have (on average 1.06) internal successors, (53), 51 states have internal predecessors, (53), 17 states have call successors, (17), 12 states have call predecessors, (17), 12 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2022-12-14 08:44:42,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 86 transitions. [2022-12-14 08:44:42,069 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 86 transitions. Word has length 73 [2022-12-14 08:44:42,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:44:42,069 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 86 transitions. [2022-12-14 08:44:42,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 4 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2022-12-14 08:44:42,069 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 86 transitions. [2022-12-14 08:44:42,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-12-14 08:44:42,070 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:44:42,070 INFO L195 NwaCegarLoop]: trace histogram [13, 12, 12, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2022-12-14 08:44:42,074 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba42edb-4c85-4caf-a25e-d4332abe072f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-14 08:44:42,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba42edb-4c85-4caf-a25e-d4332abe072f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:44:42,272 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 08:44:42,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:44:42,273 INFO L85 PathProgramCache]: Analyzing trace with hash 1241228560, now seen corresponding path program 2 times [2022-12-14 08:44:42,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:44:42,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293379248] [2022-12-14 08:44:42,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:44:42,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:44:42,294 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 08:44:42,294 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [487318313] [2022-12-14 08:44:42,294 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 08:44:42,295 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:44:42,295 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba42edb-4c85-4caf-a25e-d4332abe072f/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:44:42,298 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba42edb-4c85-4caf-a25e-d4332abe072f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 08:44:42,300 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba42edb-4c85-4caf-a25e-d4332abe072f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-14 08:44:42,356 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-12-14 08:44:42,356 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 08:44:42,357 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 33 conjunts are in the unsatisfiable core [2022-12-14 08:44:42,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:44:42,505 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 41 proven. 34 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2022-12-14 08:44:42,505 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 08:44:43,281 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 41 proven. 29 refuted. 0 times theorem prover too weak. 236 trivial. 0 not checked. [2022-12-14 08:44:43,281 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:44:43,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293379248] [2022-12-14 08:44:43,281 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 08:44:43,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [487318313] [2022-12-14 08:44:43,282 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [487318313] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 08:44:43,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1294985168] [2022-12-14 08:44:43,283 INFO L159 IcfgInterpreter]: Started Sifa with 16 locations of interest [2022-12-14 08:44:43,284 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 08:44:43,284 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 08:44:43,284 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 08:44:43,284 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 08:44:45,360 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 18 for LOIs [2022-12-14 08:44:45,365 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 08:44:46,057 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3658#(and (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 08:44:46,057 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 08:44:46,057 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-14 08:44:46,058 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 17 [2022-12-14 08:44:46,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543303301] [2022-12-14 08:44:46,058 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-14 08:44:46,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-12-14 08:44:46,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:44:46,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-12-14 08:44:46,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=578, Unknown=0, NotChecked=0, Total=702 [2022-12-14 08:44:46,059 INFO L87 Difference]: Start difference. First operand 80 states and 86 transitions. Second operand has 17 states, 17 states have (on average 1.8823529411764706) internal successors, (32), 16 states have internal predecessors, (32), 9 states have call successors, (23), 3 states have call predecessors, (23), 2 states have return successors, (21), 7 states have call predecessors, (21), 9 states have call successors, (21) [2022-12-14 08:44:53,201 WARN L233 SmtUtils]: Spent 6.95s on a formula simplification. DAG size of input: 38 DAG size of output: 36 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 08:44:55,389 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-14 08:44:57,392 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-14 08:44:57,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:44:57,813 INFO L93 Difference]: Finished difference Result 112 states and 130 transitions. [2022-12-14 08:44:57,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-14 08:44:57,813 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.8823529411764706) internal successors, (32), 16 states have internal predecessors, (32), 9 states have call successors, (23), 3 states have call predecessors, (23), 2 states have return successors, (21), 7 states have call predecessors, (21), 9 states have call successors, (21) Word has length 74 [2022-12-14 08:44:57,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:44:57,814 INFO L225 Difference]: With dead ends: 112 [2022-12-14 08:44:57,814 INFO L226 Difference]: Without dead ends: 110 [2022-12-14 08:44:57,815 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 189 SyntacticMatches, 6 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 291 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=154, Invalid=716, Unknown=0, NotChecked=0, Total=870 [2022-12-14 08:44:57,815 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 24 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 347 mSolverCounterSat, 55 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 347 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-12-14 08:44:57,815 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 85 Invalid, 404 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 347 Invalid, 2 Unknown, 0 Unchecked, 4.7s Time] [2022-12-14 08:44:57,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2022-12-14 08:44:57,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 108. [2022-12-14 08:44:57,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 65 states have (on average 1.0769230769230769) internal successors, (70), 67 states have internal predecessors, (70), 28 states have call successors, (28), 14 states have call predecessors, (28), 14 states have return successors, (27), 26 states have call predecessors, (27), 27 states have call successors, (27) [2022-12-14 08:44:57,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 125 transitions. [2022-12-14 08:44:57,842 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 125 transitions. Word has length 74 [2022-12-14 08:44:57,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:44:57,842 INFO L495 AbstractCegarLoop]: Abstraction has 108 states and 125 transitions. [2022-12-14 08:44:57,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.8823529411764706) internal successors, (32), 16 states have internal predecessors, (32), 9 states have call successors, (23), 3 states have call predecessors, (23), 2 states have return successors, (21), 7 states have call predecessors, (21), 9 states have call successors, (21) [2022-12-14 08:44:57,842 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 125 transitions. [2022-12-14 08:44:57,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-12-14 08:44:57,843 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:44:57,843 INFO L195 NwaCegarLoop]: trace histogram [14, 13, 13, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2022-12-14 08:44:57,848 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba42edb-4c85-4caf-a25e-d4332abe072f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-14 08:44:58,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba42edb-4c85-4caf-a25e-d4332abe072f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-12-14 08:44:58,045 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 08:44:58,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:44:58,046 INFO L85 PathProgramCache]: Analyzing trace with hash 1175687132, now seen corresponding path program 3 times [2022-12-14 08:44:58,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:44:58,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785360894] [2022-12-14 08:44:58,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:44:58,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:44:58,067 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 08:44:58,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [797638653] [2022-12-14 08:44:58,068 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-14 08:44:58,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:44:58,069 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba42edb-4c85-4caf-a25e-d4332abe072f/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:44:58,072 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba42edb-4c85-4caf-a25e-d4332abe072f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 08:44:58,082 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba42edb-4c85-4caf-a25e-d4332abe072f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-14 08:44:58,138 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-14 08:44:58,138 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 08:44:58,139 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 51 conjunts are in the unsatisfiable core [2022-12-14 08:44:58,141 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:45:38,663 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 100 proven. 67 refuted. 2 times theorem prover too weak. 192 trivial. 0 not checked. [2022-12-14 08:45:38,663 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 08:47:35,853 WARN L233 SmtUtils]: Spent 30.12s on a formula simplification that was a NOOP. DAG size: 120 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 08:48:47,794 WARN L233 SmtUtils]: Spent 6.59s on a formula simplification that was a NOOP. DAG size: 79 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 08:49:18,904 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 105 proven. 34 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2022-12-14 08:49:18,904 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:49:18,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785360894] [2022-12-14 08:49:18,905 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 08:49:18,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [797638653] [2022-12-14 08:49:18,905 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [797638653] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 08:49:18,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [399829860] [2022-12-14 08:49:18,906 INFO L159 IcfgInterpreter]: Started Sifa with 16 locations of interest [2022-12-14 08:49:18,907 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 08:49:18,907 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 08:49:18,907 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 08:49:18,907 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 08:49:21,119 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 18 for LOIs [2022-12-14 08:49:21,126 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 08:49:35,798 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4507#(and (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 08:49:35,798 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 08:49:35,798 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-14 08:49:35,798 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 25 [2022-12-14 08:49:35,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739466091] [2022-12-14 08:49:35,798 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-14 08:49:35,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-12-14 08:49:35,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:49:35,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-12-14 08:49:35,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=213, Invalid=962, Unknown=15, NotChecked=0, Total=1190 [2022-12-14 08:49:35,800 INFO L87 Difference]: Start difference. First operand 108 states and 125 transitions. Second operand has 25 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 17 states have internal predecessors, (35), 16 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (24), 13 states have call predecessors, (24), 14 states have call successors, (24) [2022-12-14 08:49:37,819 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse4 (div |c_ULTIMATE.start_main_~d~0#1| 2))) (let ((.cse7 (* |c_ULTIMATE.start_main_~B~0#1| |c_ULTIMATE.start_main_~q~0#1|)) (.cse1 (+ .cse4 1))) (let ((.cse32 (* |c_ULTIMATE.start_main_~p~0#1| |c_ULTIMATE.start_main_~B~0#1|)) (.cse17 (div |c_ULTIMATE.start_main_~p~0#1| 2)) (.cse18 (= (mod |c_ULTIMATE.start_main_~p~0#1| 2) 0)) (.cse0 (= (mod |c_ULTIMATE.start_main_~d~0#1| 2) 0)) (.cse51 (< |c_ULTIMATE.start_main_~d~0#1| 0)) (.cse52 (<= .cse1 |c_ULTIMATE.start_main_~r~0#1|)) (.cse53 (<= .cse4 |c_ULTIMATE.start_main_~r~0#1|)) (.cse50 (= |c_ULTIMATE.start_main_~A~0#1| (+ .cse7 |c_ULTIMATE.start_main_~r~0#1|))) (.cse31 (< |c_ULTIMATE.start_main_~p~0#1| 0))) (let ((.cse6 (not .cse31)) (.cse24 (or .cse53 .cse50)) (.cse25 (not .cse53)) (.cse26 (+ .cse4 |c_ULTIMATE.start_main_~A~0#1|)) (.cse20 (or .cse52 .cse50)) (.cse21 (not .cse52)) (.cse22 (+ .cse4 |c_ULTIMATE.start_main_~A~0#1| 1)) (.cse3 (not .cse51)) (.cse5 (and .cse51 (not .cse0))) (.cse19 (and (not .cse18) .cse31)) (.cse9 (not .cse50)) (.cse13 (* .cse17 |c_ULTIMATE.start_main_~B~0#1|)) (.cse27 (= .cse32 |c_ULTIMATE.start_main_~d~0#1|))) (and (let ((.cse2 (+ |c_ULTIMATE.start_main_~B~0#1| .cse13))) (or (and (or .cse0 (not (= .cse1 .cse2)) .cse3) (or (not (= .cse4 .cse2)) .cse5)) .cse6 (let ((.cse16 (+ .cse17 1))) (let ((.cse15 (+ |c_ULTIMATE.start_main_~B~0#1| (* (div .cse16 2) |c_ULTIMATE.start_main_~B~0#1|))) (.cse8 (div .cse2 2))) (let ((.cse10 (= .cse15 .cse8)) (.cse11 (<= .cse2 |c_ULTIMATE.start_main_~r~0#1|)) (.cse12 (= (mod .cse16 2) 0))) (and (or (not (<= (+ .cse7 .cse8) |c_ULTIMATE.start_main_~A~0#1|)) .cse9 .cse10 .cse11 .cse12) (or (let ((.cse14 (< .cse2 0))) (and (or (not (<= (+ .cse7 .cse8 |c_ULTIMATE.start_main_~B~0#1| .cse13) |c_ULTIMATE.start_main_~A~0#1|)) .cse10 (and .cse14 (not (= (mod .cse2 2) 0)))) (or (not .cse14) (= .cse15 (+ .cse8 1))))) (not .cse11) .cse9 .cse12))))) .cse18)) (or .cse19 (let ((.cse23 (+ .cse7 |c_ULTIMATE.start_main_~r~0#1| .cse13))) (and (or .cse0 (and .cse20 (or .cse21 (= .cse22 .cse23))) .cse3) (or (and .cse24 (or .cse25 (= .cse26 .cse23))) .cse5)))) (or (not .cse27) (let ((.cse30 (div .cse32 2))) (let ((.cse28 (< (* 2 |c_ULTIMATE.start_main_~d~0#1|) (+ .cse32 .cse30 1))) (.cse29 (* |c_ULTIMATE.start_main_~B~0#1| (div (* |c_ULTIMATE.start_main_~p~0#1| 2) 4)))) (and (or .cse28 .cse6 (= (+ |c_ULTIMATE.start_main_~B~0#1| .cse29) .cse30) .cse18) (or .cse28 (= .cse30 .cse29) .cse31))))) (or .cse6 (let ((.cse33 (+ .cse7 |c_ULTIMATE.start_main_~r~0#1| |c_ULTIMATE.start_main_~B~0#1| .cse13))) (and (or (and .cse24 (or .cse25 (= .cse26 .cse33))) .cse5) (or (and .cse20 (or .cse21 (= .cse22 .cse33))) .cse0 .cse3))) .cse18) (or (and (or (not (= .cse13 .cse1)) .cse0 .cse3) (or (not (= .cse4 .cse13)) .cse5)) .cse19 (let ((.cse46 (* (div |c_ULTIMATE.start_main_~p~0#1| 4) |c_ULTIMATE.start_main_~B~0#1|))) (let ((.cse39 (< .cse17 0)) (.cse48 (+ .cse46 |c_ULTIMATE.start_main_~B~0#1|)) (.cse40 (div .cse13 2))) (let ((.cse41 (<= .cse13 |c_ULTIMATE.start_main_~r~0#1|)) (.cse38 (= .cse40 .cse46)) (.cse35 (= (mod .cse17 2) 0)) (.cse34 (= .cse40 .cse48)) (.cse37 (not .cse39))) (and (or (let ((.cse36 (not (<= (+ .cse40 .cse7) |c_ULTIMATE.start_main_~A~0#1|)))) (and (or .cse34 .cse35 .cse36 .cse37) (or .cse38 .cse36 .cse39))) .cse41 .cse9) (or (not .cse41) .cse9 (let ((.cse44 (= (mod .cse13 2) 0)) (.cse49 (< .cse13 0))) (let ((.cse47 (+ .cse40 1)) (.cse45 (not .cse49)) (.cse42 (and .cse49 (not .cse44))) (.cse43 (not (<= (+ .cse40 .cse7 .cse13) |c_ULTIMATE.start_main_~A~0#1|)))) (and (or (and (or .cse42 .cse38 .cse43) (or .cse44 .cse45 (= .cse46 .cse47))) .cse39) (or .cse35 (and (or (= .cse47 .cse48) .cse45) (or .cse34 .cse42 .cse43)) .cse37)))))))))) .cse50 .cse27))))) is different from false [2022-12-14 08:49:44,691 WARN L233 SmtUtils]: Spent 5.57s on a formula simplification that was a NOOP. DAG size: 97 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 08:50:09,019 WARN L233 SmtUtils]: Spent 14.13s on a formula simplification. DAG size of input: 97 DAG size of output: 65 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 08:50:30,319 WARN L233 SmtUtils]: Spent 16.77s on a formula simplification. DAG size of input: 88 DAG size of output: 48 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 08:50:42,233 WARN L233 SmtUtils]: Spent 5.72s on a formula simplification. DAG size of input: 87 DAG size of output: 53 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 08:50:57,101 WARN L233 SmtUtils]: Spent 8.40s on a formula simplification. DAG size of input: 88 DAG size of output: 50 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 08:50:58,697 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-14 08:51:02,383 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-14 08:51:10,180 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.66s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-14 08:51:12,182 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-14 08:51:13,388 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-14 08:51:17,757 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-14 08:51:32,269 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-14 08:51:35,735 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-14 08:52:02,068 WARN L233 SmtUtils]: Spent 6.81s on a formula simplification. DAG size of input: 137 DAG size of output: 26 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 08:52:04,640 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-14 08:52:07,289 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse17 (div |c_ULTIMATE.start_main_~p~0#1| 2)) (.cse7 (* |c_ULTIMATE.start_main_~B~0#1| |c_ULTIMATE.start_main_~q~0#1|)) (.cse0 (= (mod |c_ULTIMATE.start_main_~d~0#1| 2) 0)) (.cse37 (< |c_ULTIMATE.start_main_~d~0#1| 0)) (.cse4 (div |c_ULTIMATE.start_main_~d~0#1| 2)) (.cse19 (div (- |c_ULTIMATE.start_main_~p~0#1|) (- 2)))) (let ((.cse20 (* (div (- .cse19) (- 2)) |c_ULTIMATE.start_main_~B~0#1|)) (.cse1 (+ .cse4 1)) (.cse3 (not .cse37)) (.cse5 (and .cse37 (not .cse0))) (.cse6 (< |c_ULTIMATE.start_main_~p~0#1| 0)) (.cse9 (not (= |c_ULTIMATE.start_main_~A~0#1| (+ .cse7 |c_ULTIMATE.start_main_~r~0#1|)))) (.cse13 (* .cse17 |c_ULTIMATE.start_main_~B~0#1|)) (.cse18 (= (mod |c_ULTIMATE.start_main_~p~0#1| 2) 0))) (and (let ((.cse2 (+ |c_ULTIMATE.start_main_~B~0#1| .cse13))) (or (and (or .cse0 (not (= .cse1 .cse2)) .cse3) (or (not (= .cse4 .cse2)) .cse5)) (not .cse6) (let ((.cse16 (+ .cse17 1))) (let ((.cse15 (+ |c_ULTIMATE.start_main_~B~0#1| (* (div .cse16 2) |c_ULTIMATE.start_main_~B~0#1|))) (.cse8 (div .cse2 2))) (let ((.cse10 (= .cse15 .cse8)) (.cse11 (<= .cse2 |c_ULTIMATE.start_main_~r~0#1|)) (.cse12 (= (mod .cse16 2) 0))) (and (or (not (<= (+ .cse7 .cse8) |c_ULTIMATE.start_main_~A~0#1|)) .cse9 .cse10 .cse11 .cse12) (or (let ((.cse14 (< .cse2 0))) (and (or (not (<= (+ .cse7 .cse8 |c_ULTIMATE.start_main_~B~0#1| .cse13) |c_ULTIMATE.start_main_~A~0#1|)) .cse10 (and .cse14 (not (= (mod .cse2 2) 0)))) (or (not .cse14) (= .cse15 (+ .cse8 1))))) (not .cse11) .cse9 .cse12))))) .cse18)) (= (mod .cse19 2) 0) (= (* .cse20 4) |c_ULTIMATE.start_main_~d~0#1|) (not (<= |c_ULTIMATE.start_main_~d~0#1| |c_ULTIMATE.start_main_~r~0#1|)) (<= (* 2 .cse20) |c_ULTIMATE.start_main_~r~0#1|) (= 0 |c_ULTIMATE.start_main_~q~0#1|) (= |c_ULTIMATE.start_main_~r~0#1| |c_ULTIMATE.start_main_~A~0#1|) (or (and (or (not (= .cse13 .cse1)) .cse0 .cse3) (or (not (= .cse4 .cse13)) .cse5)) (and (not .cse18) .cse6) (let ((.cse33 (* (div |c_ULTIMATE.start_main_~p~0#1| 4) |c_ULTIMATE.start_main_~B~0#1|))) (let ((.cse26 (< .cse17 0)) (.cse35 (+ .cse33 |c_ULTIMATE.start_main_~B~0#1|)) (.cse27 (div .cse13 2))) (let ((.cse28 (<= .cse13 |c_ULTIMATE.start_main_~r~0#1|)) (.cse25 (= .cse27 .cse33)) (.cse22 (= (mod .cse17 2) 0)) (.cse21 (= .cse27 .cse35)) (.cse24 (not .cse26))) (and (or (let ((.cse23 (not (<= (+ .cse27 .cse7) |c_ULTIMATE.start_main_~A~0#1|)))) (and (or .cse21 .cse22 .cse23 .cse24) (or .cse25 .cse23 .cse26))) .cse28 .cse9) (or (not .cse28) .cse9 (let ((.cse31 (= (mod .cse13 2) 0)) (.cse36 (< .cse13 0))) (let ((.cse34 (+ .cse27 1)) (.cse32 (not .cse36)) (.cse29 (and .cse36 (not .cse31))) (.cse30 (not (<= (+ .cse27 .cse7 .cse13) |c_ULTIMATE.start_main_~A~0#1|)))) (and (or (and (or .cse29 .cse25 .cse30) (or .cse31 .cse32 (= .cse33 .cse34))) .cse26) (or .cse22 (and (or (= .cse34 .cse35) .cse32) (or .cse21 .cse29 .cse30)) .cse24)))))))))) .cse18))) is different from false [2022-12-14 08:52:10,601 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-14 08:52:13,119 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2022-12-14 08:52:18,237 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.72s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2022-12-14 08:52:19,758 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2022-12-14 08:52:20,946 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2022-12-14 08:52:23,373 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2022-12-14 08:52:24,805 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2022-12-14 08:52:26,318 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2022-12-14 08:52:28,490 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2022-12-14 08:52:31,110 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.65s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2022-12-14 08:52:33,919 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2022-12-14 08:52:35,816 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.88s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2022-12-14 08:52:43,602 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2022-12-14 08:52:53,259 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-14 08:52:55,262 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-14 08:52:57,310 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-14 08:52:59,556 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse7 (* |c_ULTIMATE.start_main_~B~0#1| |c_ULTIMATE.start_main_~q~0#1|)) (.cse25 (* |c_ULTIMATE.start_main_~p~0#1| |c_ULTIMATE.start_main_~B~0#1|))) (let ((.cse46 (* |c_ULTIMATE.start_main_~B~0#1| (div (* |c_ULTIMATE.start_main_~p~0#1| 2) 4))) (.cse26 (div .cse25 2)) (.cse23 (< |c_ULTIMATE.start_main_~p~0#1| 0)) (.cse43 (= |c_ULTIMATE.start_main_~A~0#1| (+ .cse7 |c_ULTIMATE.start_main_~r~0#1|))) (.cse45 (= .cse25 |c_ULTIMATE.start_main_~d~0#1|)) (.cse17 (div |c_ULTIMATE.start_main_~p~0#1| 2)) (.cse0 (= (mod |c_ULTIMATE.start_main_~d~0#1| 2) 0)) (.cse47 (< |c_ULTIMATE.start_main_~d~0#1| 0)) (.cse4 (div |c_ULTIMATE.start_main_~d~0#1| 2))) (let ((.cse1 (+ .cse4 1)) (.cse3 (not .cse47)) (.cse5 (and .cse47 (not .cse0))) (.cse13 (* .cse17 |c_ULTIMATE.start_main_~B~0#1|)) (.cse19 (not .cse45)) (.cse24 (* 2 |c_ULTIMATE.start_main_~d~0#1|)) (.cse9 (not .cse43)) (.cse6 (not .cse23)) (.cse20 (= (+ |c_ULTIMATE.start_main_~B~0#1| .cse46) .cse26)) (.cse18 (= (mod |c_ULTIMATE.start_main_~p~0#1| 2) 0)) (.cse22 (= .cse26 .cse46))) (and (let ((.cse2 (+ |c_ULTIMATE.start_main_~B~0#1| .cse13))) (or (and (or .cse0 (not (= .cse1 .cse2)) .cse3) (or (not (= .cse4 .cse2)) .cse5)) .cse6 (let ((.cse16 (+ .cse17 1))) (let ((.cse15 (+ |c_ULTIMATE.start_main_~B~0#1| (* (div .cse16 2) |c_ULTIMATE.start_main_~B~0#1|))) (.cse8 (div .cse2 2))) (let ((.cse10 (= .cse15 .cse8)) (.cse11 (<= .cse2 |c_ULTIMATE.start_main_~r~0#1|)) (.cse12 (= (mod .cse16 2) 0))) (and (or (not (<= (+ .cse7 .cse8) |c_ULTIMATE.start_main_~A~0#1|)) .cse9 .cse10 .cse11 .cse12) (or (let ((.cse14 (< .cse2 0))) (and (or (not (<= (+ .cse7 .cse8 |c_ULTIMATE.start_main_~B~0#1| .cse13) |c_ULTIMATE.start_main_~A~0#1|)) .cse10 (and .cse14 (not (= (mod .cse2 2) 0)))) (or (not .cse14) (= .cse15 (+ .cse8 1))))) (not .cse11) .cse9 .cse12))))) .cse18)) (or .cse19 (let ((.cse21 (< .cse24 (+ .cse25 .cse7 .cse26 1)))) (and (or .cse6 .cse20 .cse21 .cse18) (or .cse22 .cse21 .cse23))) (not (= .cse7 0))) (or (and (or (not (= .cse13 .cse1)) .cse0 .cse3) (or (not (= .cse4 .cse13)) .cse5)) (and (not .cse18) .cse23) (let ((.cse39 (* (div |c_ULTIMATE.start_main_~p~0#1| 4) |c_ULTIMATE.start_main_~B~0#1|))) (let ((.cse32 (< .cse17 0)) (.cse41 (+ .cse39 |c_ULTIMATE.start_main_~B~0#1|)) (.cse33 (div .cse13 2))) (let ((.cse34 (<= .cse13 |c_ULTIMATE.start_main_~r~0#1|)) (.cse31 (= .cse33 .cse39)) (.cse28 (= (mod .cse17 2) 0)) (.cse27 (= .cse33 .cse41)) (.cse30 (not .cse32))) (and (or (let ((.cse29 (not (<= (+ .cse33 .cse7) |c_ULTIMATE.start_main_~A~0#1|)))) (and (or .cse27 .cse28 .cse29 .cse30) (or .cse31 .cse29 .cse32))) .cse34 .cse9) (or (not .cse34) .cse9 (let ((.cse37 (= (mod .cse13 2) 0)) (.cse42 (< .cse13 0))) (let ((.cse40 (+ .cse33 1)) (.cse38 (not .cse42)) (.cse35 (and .cse42 (not .cse37))) (.cse36 (not (<= (+ .cse33 .cse7 .cse13) |c_ULTIMATE.start_main_~A~0#1|)))) (and (or (and (or .cse35 .cse31 .cse36) (or .cse37 .cse38 (= .cse39 .cse40))) .cse32) (or .cse28 (and (or (= .cse40 .cse41) .cse38) (or .cse27 .cse35 .cse36)) .cse30)))))))))) .cse43 (or .cse19 (<= .cse24 |c_ULTIMATE.start_main_~r~0#1|) .cse9 (let ((.cse44 (not (<= (+ .cse25 .cse7 .cse26) |c_ULTIMATE.start_main_~A~0#1|)))) (and (or .cse6 .cse20 .cse44 .cse18) (or .cse22 .cse44 .cse23)))) .cse45)))) is different from false [2022-12-14 08:53:02,830 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-14 08:53:04,968 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.86s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-14 08:54:22,414 WARN L233 SmtUtils]: Spent 30.27s on a formula simplification. DAG size of input: 122 DAG size of output: 64 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 08:54:25,135 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-14 08:54:25,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:54:25,478 INFO L93 Difference]: Finished difference Result 128 states and 146 transitions. [2022-12-14 08:54:25,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-12-14 08:54:25,479 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 17 states have internal predecessors, (35), 16 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (24), 13 states have call predecessors, (24), 14 states have call successors, (24) Word has length 81 [2022-12-14 08:54:25,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:54:25,479 INFO L225 Difference]: With dead ends: 128 [2022-12-14 08:54:25,479 INFO L226 Difference]: Without dead ends: 126 [2022-12-14 08:54:25,480 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 209 SyntacticMatches, 9 SemanticMatches, 49 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 800 ImplicationChecksByTransitivity, 343.2s TimeCoverageRelationStatistics Valid=393, Invalid=1831, Unknown=44, NotChecked=282, Total=2550 [2022-12-14 08:54:25,480 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 24 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 505 mSolverCounterSat, 78 mSolverCounterUnsat, 15 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 73.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 505 IncrementalHoareTripleChecker+Invalid, 15 IncrementalHoareTripleChecker+Unknown, 20 IncrementalHoareTripleChecker+Unchecked, 74.0s IncrementalHoareTripleChecker+Time [2022-12-14 08:54:25,481 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 110 Invalid, 618 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 505 Invalid, 15 Unknown, 20 Unchecked, 74.0s Time] [2022-12-14 08:54:25,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2022-12-14 08:54:25,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 123. [2022-12-14 08:54:25,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 75 states have (on average 1.0666666666666667) internal successors, (80), 78 states have internal predecessors, (80), 30 states have call successors, (30), 17 states have call predecessors, (30), 17 states have return successors, (29), 27 states have call predecessors, (29), 29 states have call successors, (29) [2022-12-14 08:54:25,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 139 transitions. [2022-12-14 08:54:25,527 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 139 transitions. Word has length 81 [2022-12-14 08:54:25,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:54:25,527 INFO L495 AbstractCegarLoop]: Abstraction has 123 states and 139 transitions. [2022-12-14 08:54:25,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 17 states have internal predecessors, (35), 16 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (24), 13 states have call predecessors, (24), 14 states have call successors, (24) [2022-12-14 08:54:25,528 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 139 transitions. [2022-12-14 08:54:25,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-12-14 08:54:25,528 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:54:25,528 INFO L195 NwaCegarLoop]: trace histogram [16, 15, 15, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2022-12-14 08:54:25,533 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba42edb-4c85-4caf-a25e-d4332abe072f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-12-14 08:54:25,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba42edb-4c85-4caf-a25e-d4332abe072f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-12-14 08:54:25,730 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 08:54:25,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:54:25,731 INFO L85 PathProgramCache]: Analyzing trace with hash 20862120, now seen corresponding path program 2 times [2022-12-14 08:54:25,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:54:25,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26904306] [2022-12-14 08:54:25,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:54:25,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:54:25,759 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 08:54:25,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [415469018] [2022-12-14 08:54:25,760 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 08:54:25,760 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:54:25,761 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba42edb-4c85-4caf-a25e-d4332abe072f/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:54:25,763 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba42edb-4c85-4caf-a25e-d4332abe072f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 08:54:25,766 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba42edb-4c85-4caf-a25e-d4332abe072f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-14 08:54:25,831 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-12-14 08:54:25,831 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 08:54:25,832 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 29 conjunts are in the unsatisfiable core [2022-12-14 08:54:25,833 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:54:25,920 INFO L134 CoverageAnalysis]: Checked inductivity of 477 backedges. 113 proven. 39 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-12-14 08:54:25,920 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 08:54:26,037 INFO L134 CoverageAnalysis]: Checked inductivity of 477 backedges. 110 proven. 2 refuted. 0 times theorem prover too weak. 365 trivial. 0 not checked. [2022-12-14 08:54:26,037 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:54:26,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26904306] [2022-12-14 08:54:26,037 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 08:54:26,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [415469018] [2022-12-14 08:54:26,037 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [415469018] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 08:54:26,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [477689045] [2022-12-14 08:54:26,039 INFO L159 IcfgInterpreter]: Started Sifa with 17 locations of interest [2022-12-14 08:54:26,039 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 08:54:26,040 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 08:54:26,040 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 08:54:26,040 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 08:54:28,227 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 18 for LOIs [2022-12-14 08:54:28,236 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 08:54:29,007 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5492#(and (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 08:54:29,008 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 08:54:29,008 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-14 08:54:29,008 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8] total 16 [2022-12-14 08:54:29,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349002031] [2022-12-14 08:54:29,008 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-14 08:54:29,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-14 08:54:29,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:54:29,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-14 08:54:29,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=580, Unknown=0, NotChecked=0, Total=702 [2022-12-14 08:54:29,010 INFO L87 Difference]: Start difference. First operand 123 states and 139 transitions. Second operand has 16 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 11 states have internal predecessors, (29), 7 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (18), 7 states have call predecessors, (18), 5 states have call successors, (18) [2022-12-14 08:54:29,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:54:29,337 INFO L93 Difference]: Finished difference Result 123 states and 139 transitions. [2022-12-14 08:54:29,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-14 08:54:29,337 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 11 states have internal predecessors, (29), 7 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (18), 7 states have call predecessors, (18), 5 states have call successors, (18) Word has length 92 [2022-12-14 08:54:29,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:54:29,338 INFO L225 Difference]: With dead ends: 123 [2022-12-14 08:54:29,338 INFO L226 Difference]: Without dead ends: 0 [2022-12-14 08:54:29,339 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 243 SyntacticMatches, 6 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 347 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=174, Invalid=818, Unknown=0, NotChecked=0, Total=992 [2022-12-14 08:54:29,339 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 43 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 08:54:29,339 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 23 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 08:54:29,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-12-14 08:54:29,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-12-14 08:54:29,340 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) [2022-12-14 08:54:29,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-12-14 08:54:29,340 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 92 [2022-12-14 08:54:29,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:54:29,340 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-12-14 08:54:29,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 11 states have internal predecessors, (29), 7 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (18), 7 states have call predecessors, (18), 5 states have call successors, (18) [2022-12-14 08:54:29,340 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-12-14 08:54:29,340 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-12-14 08:54:29,342 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-12-14 08:54:29,346 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba42edb-4c85-4caf-a25e-d4332abe072f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-12-14 08:54:29,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba42edb-4c85-4caf-a25e-d4332abe072f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:54:29,549 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-12-14 08:54:35,924 INFO L895 garLoopResultBuilder]: At program point L52-2(lines 44 56) the Hoare annotation is: (and (<= 1 |ULTIMATE.start_main_~p~0#1|) (= |ULTIMATE.start_main_~A~0#1| (+ |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~r~0#1|)) (= |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~p~0#1|) (= |ULTIMATE.start_main_~B~0#1| 1)) [2022-12-14 08:54:35,925 INFO L895 garLoopResultBuilder]: At program point L44-1(lines 44 56) the Hoare annotation is: (and (= |ULTIMATE.start_main_~d~0#1| 1) (= |ULTIMATE.start_main_~A~0#1| (+ |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~r~0#1|)) (= |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~p~0#1|) (= |ULTIMATE.start_main_~B~0#1| 1)) [2022-12-14 08:54:35,925 INFO L895 garLoopResultBuilder]: At program point L36(line 36) the Hoare annotation is: (let ((.cse1 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse2 (= |ULTIMATE.start_main_~A~0#1| |ULTIMATE.start_main_~r~0#1|)) (.cse3 (= |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~p~0#1|)) (.cse6 (= |ULTIMATE.start_main_~B~0#1| 1))) (or (let ((.cse0 (* |ULTIMATE.start_main_~B~0#1| (div (- (div (- |ULTIMATE.start_main_~p~0#1|) (- 2))) (- 2))))) (and (<= 4 |ULTIMATE.start_main_~p~0#1|) (<= (* 2 .cse0) |ULTIMATE.start_main_~r~0#1|) .cse1 (= (* .cse0 4) |ULTIMATE.start_main_~d~0#1|) .cse2 .cse3)) (let ((.cse5 (select |#memory_int| 1)) (.cse4 (select |#memory_int| 2))) (and (= (select .cse4 7) 0) (= (select |#length| 3) 12) (= 114 (select .cse4 2)) (= (select .cse4 6) 99) (= 97 (select .cse4 1)) (= 2 (select |#length| 1)) (= |ULTIMATE.start_main_~B~0#1| |ULTIMATE.start_main_~d~0#1|) (= (select |#valid| 3) 1) (= (select .cse4 4) 50) (= 100 (select .cse4 3)) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| (ite (and (<= |ULTIMATE.start_main_~A~0#1| 10) (<= 0 |ULTIMATE.start_main_~A~0#1|)) 1 0)) .cse1 (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| |ULTIMATE.start_assume_abort_if_not_~cond#1|) (= (select |#valid| 1) 1) .cse2 (= (select |#valid| 0) 0) (not (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0)) (= (select .cse4 5) 46) (= (select |#valid| 2) 1) .cse3 (= |#NULL.offset| 0) (= 8 (select |#length| 2)) (= (select .cse5 0) 48) .cse6 (= (select .cse5 1) 0) (= (select .cse4 0) 104) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) (and .cse1 .cse2 (<= 1 |ULTIMATE.start_main_~r~0#1|) .cse3 .cse6 (= 2 |ULTIMATE.start_main_~d~0#1|)))) [2022-12-14 08:54:35,925 INFO L895 garLoopResultBuilder]: At program point L45(line 45) the Hoare annotation is: (and (<= 1 |ULTIMATE.start_main_~p~0#1|) (= |ULTIMATE.start_main_~A~0#1| (+ |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~r~0#1|)) (= |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~p~0#1|) (= |ULTIMATE.start_main_~B~0#1| 1)) [2022-12-14 08:54:35,925 INFO L895 garLoopResultBuilder]: At program point L45-1(line 45) the Hoare annotation is: (and (<= 1 |ULTIMATE.start_main_~p~0#1|) (= |ULTIMATE.start_main_~A~0#1| (+ |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~r~0#1|)) (= |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~p~0#1|) (= |ULTIMATE.start_main_~B~0#1| 1)) [2022-12-14 08:54:35,925 INFO L899 garLoopResultBuilder]: For program point L37(lines 34 42) no Hoare annotation was computed. [2022-12-14 08:54:35,925 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-12-14 08:54:35,925 INFO L895 garLoopResultBuilder]: At program point L58(line 58) the Hoare annotation is: (and (= |ULTIMATE.start_main_~p~0#1| 1) (= |ULTIMATE.start_main_~B~0#1| |ULTIMATE.start_main_~d~0#1|) (= |ULTIMATE.start_main_~B~0#1| 1)) [2022-12-14 08:54:35,925 INFO L899 garLoopResultBuilder]: For program point L46(lines 44 56) no Hoare annotation was computed. [2022-12-14 08:54:35,925 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2022-12-14 08:54:35,925 INFO L895 garLoopResultBuilder]: At program point L34-2(lines 34 42) the Hoare annotation is: (let ((.cse6 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse1 (= |ULTIMATE.start_main_~A~0#1| |ULTIMATE.start_main_~r~0#1|)) (.cse2 (= |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~p~0#1|)) (.cse4 (= |ULTIMATE.start_main_~B~0#1| 1))) (or (let ((.cse3 (select |#memory_int| 1)) (.cse0 (select |#memory_int| 2))) (and (= (select .cse0 7) 0) (= (select |#length| 3) 12) (= 114 (select .cse0 2)) (= (select .cse0 6) 99) (= 97 (select .cse0 1)) (= 2 (select |#length| 1)) (= |ULTIMATE.start_main_~B~0#1| |ULTIMATE.start_main_~d~0#1|) (= (select |#valid| 3) 1) (= (select .cse0 4) 50) (= 100 (select .cse0 3)) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| (ite (and (<= |ULTIMATE.start_main_~A~0#1| 10) (<= 0 |ULTIMATE.start_main_~A~0#1|)) 1 0)) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| |ULTIMATE.start_assume_abort_if_not_~cond#1|) (= (select |#valid| 1) 1) .cse1 (= (select |#valid| 0) 0) (not (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0)) (= (select .cse0 5) 46) (= (select |#valid| 2) 1) .cse2 (= |#NULL.offset| 0) (= 8 (select |#length| 2)) (= (select .cse3 0) 48) (= (+ (* |ULTIMATE.start_main_~B~0#1| (div |ULTIMATE.start_main_~p~0#1| 2)) (* |ULTIMATE.start_main_~B~0#1| |ULTIMATE.start_main_~q~0#1|) |ULTIMATE.start_main_~r~0#1|) (+ (div |ULTIMATE.start_main_~d~0#1| 2) |ULTIMATE.start_main_~A~0#1|)) .cse4 (= (select .cse3 1) 0) (= (select .cse0 0) 104) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) (let ((.cse5 (div (- |ULTIMATE.start_main_~p~0#1|) (- 2)))) (and (<= 4 |ULTIMATE.start_main_~p~0#1|) (<= (* 2 (* |ULTIMATE.start_main_~B~0#1| (div (- .cse5) (- 2)))) |ULTIMATE.start_main_~r~0#1|) .cse6 .cse1 .cse2 (= |ULTIMATE.start_main_~d~0#1| (* 2 (* .cse5 |ULTIMATE.start_main_~B~0#1|))) (= 0 (mod .cse5 2)))) (and .cse6 .cse1 (<= 1 |ULTIMATE.start_main_~r~0#1|) .cse2 .cse4 (= 2 |ULTIMATE.start_main_~d~0#1|)))) [2022-12-14 08:54:35,925 INFO L902 garLoopResultBuilder]: At program point L59(line 59) the Hoare annotation is: true [2022-12-14 08:54:35,926 INFO L895 garLoopResultBuilder]: At program point L35(line 35) the Hoare annotation is: (let ((.cse1 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse2 (= |ULTIMATE.start_main_~A~0#1| |ULTIMATE.start_main_~r~0#1|)) (.cse3 (= |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~p~0#1|)) (.cse6 (= |ULTIMATE.start_main_~B~0#1| 1))) (or (let ((.cse0 (div (- |ULTIMATE.start_main_~p~0#1|) (- 2)))) (and (<= 4 |ULTIMATE.start_main_~p~0#1|) (<= (* 2 (* |ULTIMATE.start_main_~B~0#1| (div (- .cse0) (- 2)))) |ULTIMATE.start_main_~r~0#1|) .cse1 .cse2 .cse3 (= |ULTIMATE.start_main_~d~0#1| (* 2 (* .cse0 |ULTIMATE.start_main_~B~0#1|))) (= 0 (mod .cse0 2)))) (let ((.cse5 (select |#memory_int| 1)) (.cse4 (select |#memory_int| 2))) (and (= (select .cse4 7) 0) (= (select |#length| 3) 12) (= 114 (select .cse4 2)) (= (select .cse4 6) 99) (= 97 (select .cse4 1)) (= 2 (select |#length| 1)) (= |ULTIMATE.start_main_~B~0#1| |ULTIMATE.start_main_~d~0#1|) (= (select |#valid| 3) 1) (= (select .cse4 4) 50) (= 100 (select .cse4 3)) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| (ite (and (<= |ULTIMATE.start_main_~A~0#1| 10) (<= 0 |ULTIMATE.start_main_~A~0#1|)) 1 0)) .cse1 (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| |ULTIMATE.start_assume_abort_if_not_~cond#1|) (= (select |#valid| 1) 1) .cse2 (= (select |#valid| 0) 0) (not (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0)) (= (select .cse4 5) 46) (= (select |#valid| 2) 1) .cse3 (= |#NULL.offset| 0) (= 8 (select |#length| 2)) (= (select .cse5 0) 48) .cse6 (= (select .cse5 1) 0) (= (select .cse4 0) 104) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) (and .cse1 .cse2 (<= 1 |ULTIMATE.start_main_~r~0#1|) .cse3 .cse6 (= 2 |ULTIMATE.start_main_~d~0#1|)))) [2022-12-14 08:54:35,926 INFO L895 garLoopResultBuilder]: At program point L35-1(line 35) the Hoare annotation is: (let ((.cse1 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse2 (= |ULTIMATE.start_main_~A~0#1| |ULTIMATE.start_main_~r~0#1|)) (.cse3 (= |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~p~0#1|)) (.cse6 (= |ULTIMATE.start_main_~B~0#1| 1))) (or (let ((.cse0 (div (- |ULTIMATE.start_main_~p~0#1|) (- 2)))) (and (<= 4 |ULTIMATE.start_main_~p~0#1|) (<= (* 2 (* |ULTIMATE.start_main_~B~0#1| (div (- .cse0) (- 2)))) |ULTIMATE.start_main_~r~0#1|) .cse1 .cse2 .cse3 (= |ULTIMATE.start_main_~d~0#1| (* 2 (* .cse0 |ULTIMATE.start_main_~B~0#1|))) (= 0 (mod .cse0 2)))) (let ((.cse5 (select |#memory_int| 1)) (.cse4 (select |#memory_int| 2))) (and (= (select .cse4 7) 0) (= (select |#length| 3) 12) (= 114 (select .cse4 2)) (= (select .cse4 6) 99) (= 97 (select .cse4 1)) (= 2 (select |#length| 1)) (= |ULTIMATE.start_main_~B~0#1| |ULTIMATE.start_main_~d~0#1|) (= (select |#valid| 3) 1) (= (select .cse4 4) 50) (= 100 (select .cse4 3)) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| (ite (and (<= |ULTIMATE.start_main_~A~0#1| 10) (<= 0 |ULTIMATE.start_main_~A~0#1|)) 1 0)) .cse1 (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| |ULTIMATE.start_assume_abort_if_not_~cond#1|) (= (select |#valid| 1) 1) .cse2 (= (select |#valid| 0) 0) (not (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0)) (= (select .cse4 5) 46) (= (select |#valid| 2) 1) .cse3 (= |#NULL.offset| 0) (= 8 (select |#length| 2)) (= (select .cse5 0) 48) .cse6 (= (select .cse5 1) 0) (= (select .cse4 0) 104) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) (and .cse1 .cse2 (<= 1 |ULTIMATE.start_main_~r~0#1|) .cse3 .cse6 (= 2 |ULTIMATE.start_main_~d~0#1|)))) [2022-12-14 08:54:35,926 INFO L899 garLoopResultBuilder]: For program point L16(lines 16 17) no Hoare annotation was computed. [2022-12-14 08:54:35,926 INFO L899 garLoopResultBuilder]: For program point L15(lines 15 18) no Hoare annotation was computed. [2022-12-14 08:54:35,926 INFO L899 garLoopResultBuilder]: For program point L15-2(lines 14 20) no Hoare annotation was computed. [2022-12-14 08:54:35,926 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 14 20) no Hoare annotation was computed. [2022-12-14 08:54:35,926 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 14 20) the Hoare annotation is: true [2022-12-14 08:54:35,926 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2022-12-14 08:54:35,928 INFO L445 BasicCegarLoop]: Path program histogram: [3, 2, 1, 1, 1, 1, 1, 1] [2022-12-14 08:54:35,930 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 08:54:35,941 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 08:54:35 BoogieIcfgContainer [2022-12-14 08:54:35,942 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 08:54:35,942 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 08:54:35,942 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 08:54:35,942 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 08:54:35,942 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 08:44:21" (3/4) ... [2022-12-14 08:54:35,944 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-12-14 08:54:35,948 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2022-12-14 08:54:35,950 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2022-12-14 08:54:35,950 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2022-12-14 08:54:35,951 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-12-14 08:54:35,951 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-12-14 08:54:35,951 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-12-14 08:54:35,966 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((((((((((((((((((((((unknown-#memory_int-unknown[2][7] == 0 && unknown-#length-unknown[3] == 12) && 114 == unknown-#memory_int-unknown[2][2]) && unknown-#memory_int-unknown[2][6] == 99) && 97 == unknown-#memory_int-unknown[2][1]) && 2 == unknown-#length-unknown[1]) && B == d) && \valid[3] == 1) && unknown-#memory_int-unknown[2][4] == 50) && 100 == unknown-#memory_int-unknown[2][3]) && \old(cond) == (if A <= 10 && 0 <= A then 1 else 0)) && \old(cond) == cond) && \valid[1] == 1) && A == r) && \valid[0] == 0) && !(cond == 0)) && unknown-#memory_int-unknown[2][5] == 46) && \valid[2] == 1) && d == p) && #NULL == 0) && 8 == unknown-#length-unknown[2]) && unknown-#memory_int-unknown[1][0] == 48) && B * (p / 2) + B * q + r == d / 2 + A) && B == 1) && unknown-#memory_int-unknown[1][1] == 0) && unknown-#memory_int-unknown[2][0] == 104) && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0) || ((((((4 <= p && 2 * (B * (-(-p / -2) / -2)) <= r) && q == 0) && A == r) && d == p) && d == 2 * (-p / -2 * B)) && 0 == -p / -2 % 2)) || (((((q == 0 && A == r) && 1 <= r) && d == p) && B == 1) && 2 == d) [2022-12-14 08:54:35,971 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba42edb-4c85-4caf-a25e-d4332abe072f/bin/utaipan-gh47qXpMRh/witness.graphml [2022-12-14 08:54:35,971 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 08:54:35,972 INFO L158 Benchmark]: Toolchain (without parser) took 615238.14ms. Allocated memory was 226.5MB in the beginning and 327.2MB in the end (delta: 100.7MB). Free memory was 191.0MB in the beginning and 266.6MB in the end (delta: -75.6MB). Peak memory consumption was 25.3MB. Max. memory is 16.1GB. [2022-12-14 08:54:35,972 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 117.4MB. Free memory was 80.3MB in the beginning and 80.3MB in the end (delta: 27.0kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 08:54:35,972 INFO L158 Benchmark]: CACSL2BoogieTranslator took 160.48ms. Allocated memory is still 226.5MB. Free memory was 191.0MB in the beginning and 180.8MB in the end (delta: 10.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-12-14 08:54:35,972 INFO L158 Benchmark]: Boogie Procedure Inliner took 23.62ms. Allocated memory is still 226.5MB. Free memory was 180.8MB in the beginning and 178.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 08:54:35,972 INFO L158 Benchmark]: Boogie Preprocessor took 15.18ms. Allocated memory is still 226.5MB. Free memory was 178.7MB in the beginning and 177.6MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 08:54:35,973 INFO L158 Benchmark]: RCFGBuilder took 236.15ms. Allocated memory is still 226.5MB. Free memory was 177.6MB in the beginning and 164.0MB in the end (delta: 13.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-12-14 08:54:35,973 INFO L158 Benchmark]: TraceAbstraction took 614768.33ms. Allocated memory was 226.5MB in the beginning and 327.2MB in the end (delta: 100.7MB). Free memory was 162.9MB in the beginning and 269.7MB in the end (delta: -106.8MB). Peak memory consumption was 167.9MB. Max. memory is 16.1GB. [2022-12-14 08:54:35,973 INFO L158 Benchmark]: Witness Printer took 29.51ms. Allocated memory is still 327.2MB. Free memory was 269.7MB in the beginning and 266.6MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 08:54:35,974 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 117.4MB. Free memory was 80.3MB in the beginning and 80.3MB in the end (delta: 27.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 160.48ms. Allocated memory is still 226.5MB. Free memory was 191.0MB in the beginning and 180.8MB in the end (delta: 10.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 23.62ms. Allocated memory is still 226.5MB. Free memory was 180.8MB in the beginning and 178.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 15.18ms. Allocated memory is still 226.5MB. Free memory was 178.7MB in the beginning and 177.6MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 236.15ms. Allocated memory is still 226.5MB. Free memory was 177.6MB in the beginning and 164.0MB in the end (delta: 13.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 614768.33ms. Allocated memory was 226.5MB in the beginning and 327.2MB in the end (delta: 100.7MB). Free memory was 162.9MB in the beginning and 269.7MB in the end (delta: -106.8MB). Peak memory consumption was 167.9MB. Max. memory is 16.1GB. * Witness Printer took 29.51ms. Allocated memory is still 327.2MB. Free memory was 269.7MB in the beginning and 266.6MB 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 2 procedures, 20 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 614.7s, OverallIterations: 11, TraceHistogramMax: 16, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 307.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 6.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 18 mSolverCounterUnknown, 269 SdHoareTripleChecker+Valid, 83.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 220 mSDsluCounter, 705 SdHoareTripleChecker+Invalid, 83.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 20 IncrementalHoareTripleChecker+Unchecked, 470 mSDsCounter, 397 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2270 IncrementalHoareTripleChecker+Invalid, 2705 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 397 mSolverCounterUnsat, 235 mSDtfsCounter, 2270 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1470 GetRequests, 1196 SyntacticMatches, 39 SemanticMatches, 235 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 2453 ImplicationChecksByTransitivity, 356.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=123occurred in iteration=10, 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: 0.2s AutomataMinimizationTime, 11 MinimizatonAttempts, 39 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 11 LocationsWithAnnotation, 67 PreInvPairs, 124 NumberOfFragments, 932 HoareAnnotationTreeSize, 67 FomulaSimplifications, 3125 FormulaSimplificationTreeSizeReduction, 0.4s HoareSimplificationTime, 11 FomulaSimplificationsInter, 22514 FormulaSimplificationTreeSizeReductionInter, 6.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 264.6s InterpolantComputationTime, 541 NumberOfCodeBlocks, 464 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 973 ConstructedInterpolants, 6 QuantifiedInterpolants, 12614 SizeOfPredicates, 40 NumberOfNonLiveVariables, 1307 ConjunctsInSsa, 241 ConjunctsInUnsatCore, 19 InterpolantComputations, 3 PerfectInterpolantSequences, 3150/3559 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: OVERALL_TIME: 0.3s, ICFG_INTERPRETER_ENTERED_PROCEDURES: 2, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 11, DAG_INTERPRETER_EARLY_EXITS: 1, TOOLS_POST_APPLICATIONS: 9, TOOLS_POST_TIME: 0.0s, TOOLS_POST_CALL_APPLICATIONS: 7, TOOLS_POST_CALL_TIME: 0.1s, TOOLS_POST_RETURN_APPLICATIONS: 4, TOOLS_POST_RETURN_TIME: 0.0s, TOOLS_QUANTIFIERELIM_APPLICATIONS: 20, TOOLS_QUANTIFIERELIM_TIME: 0.2s, TOOLS_QUANTIFIERELIM_MAX_TIME: 0.0s, FLUID_QUERY_TIME: 0.0s, FLUID_QUERIES: 29, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 8, DOMAIN_JOIN_TIME: 0.1s, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME: 0.0s, DOMAIN_WIDEN_APPLICATIONS: 0, DOMAIN_WIDEN_TIME: 0.0s, DOMAIN_ISSUBSETEQ_APPLICATIONS: 0, DOMAIN_ISSUBSETEQ_TIME: 0.0s, DOMAIN_ISBOTTOM_APPLICATIONS: 11, DOMAIN_ISBOTTOM_TIME: 0.0s, LOOP_SUMMARIZER_APPLICATIONS: 0, LOOP_SUMMARIZER_CACHE_MISSES: 0, LOOP_SUMMARIZER_OVERALL_TIME: 0.0s, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME: 0.0s, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 0, CALL_SUMMARIZER_APPLICATIONS: 4, CALL_SUMMARIZER_CACHE_MISSES: 1, CALL_SUMMARIZER_OVERALL_TIME: 0.0s, CALL_SUMMARIZER_NEW_COMPUTATION_TIME: 0.0s, PROCEDURE_GRAPH_BUILDER_TIME: 0.0s, PATH_EXPR_TIME: 0.0s, REGEX_TO_DAG_TIME: 0.0s, DAG_COMPRESSION_TIME: 0.0s, DAG_COMPRESSION_PROCESSED_NODES: 69, DAG_COMPRESSION_RETAINED_NODES: 33, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 44]: Loop Invariant Derived loop invariant: ((1 <= p && A == q + r) && d == p) && B == 1 - InvariantResult [Line: 59]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 34]: Loop Invariant Derived loop invariant: ((((((((((((((((((((((((((((unknown-#memory_int-unknown[2][7] == 0 && unknown-#length-unknown[3] == 12) && 114 == unknown-#memory_int-unknown[2][2]) && unknown-#memory_int-unknown[2][6] == 99) && 97 == unknown-#memory_int-unknown[2][1]) && 2 == unknown-#length-unknown[1]) && B == d) && \valid[3] == 1) && unknown-#memory_int-unknown[2][4] == 50) && 100 == unknown-#memory_int-unknown[2][3]) && \old(cond) == (if A <= 10 && 0 <= A then 1 else 0)) && \old(cond) == cond) && \valid[1] == 1) && A == r) && \valid[0] == 0) && !(cond == 0)) && unknown-#memory_int-unknown[2][5] == 46) && \valid[2] == 1) && d == p) && #NULL == 0) && 8 == unknown-#length-unknown[2]) && unknown-#memory_int-unknown[1][0] == 48) && B * (p / 2) + B * q + r == d / 2 + A) && B == 1) && unknown-#memory_int-unknown[1][1] == 0) && unknown-#memory_int-unknown[2][0] == 104) && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0) || ((((((4 <= p && 2 * (B * (-(-p / -2) / -2)) <= r) && q == 0) && A == r) && d == p) && d == 2 * (-p / -2 * B)) && 0 == -p / -2 % 2)) || (((((q == 0 && A == r) && 1 <= r) && d == p) && B == 1) && 2 == d) RESULT: Ultimate proved your program to be correct! [2022-12-14 08:54:36,082 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba42edb-4c85-4caf-a25e-d4332abe072f/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE