./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_valuebound2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 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_fad2086d-8d4b-46b7-a361-ff27000d5422/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fad2086d-8d4b-46b7-a361-ff27000d5422/bin/utaipan-g80aRyZoba/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fad2086d-8d4b-46b7-a361-ff27000d5422/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fad2086d-8d4b-46b7-a361-ff27000d5422/bin/utaipan-g80aRyZoba/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_valuebound2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fad2086d-8d4b-46b7-a361-ff27000d5422/bin/utaipan-g80aRyZoba/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fad2086d-8d4b-46b7-a361-ff27000d5422/bin/utaipan-g80aRyZoba --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 bda512f5ab4e84c08e80fd02a1c07c8fba5ca60aa45d55edfde2cc268dd1288e --- 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-b5237d8 [2022-11-22 00:32:38,476 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 00:32:38,478 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 00:32:38,517 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 00:32:38,518 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 00:32:38,523 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 00:32:38,525 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 00:32:38,531 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 00:32:38,533 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 00:32:38,535 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 00:32:38,536 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 00:32:38,538 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 00:32:38,540 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 00:32:38,543 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 00:32:38,544 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 00:32:38,547 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 00:32:38,549 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 00:32:38,554 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 00:32:38,555 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 00:32:38,558 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 00:32:38,563 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 00:32:38,565 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 00:32:38,567 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 00:32:38,568 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 00:32:38,573 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 00:32:38,576 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 00:32:38,576 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 00:32:38,578 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 00:32:38,579 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 00:32:38,580 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 00:32:38,581 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 00:32:38,581 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 00:32:38,583 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 00:32:38,585 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 00:32:38,587 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 00:32:38,587 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 00:32:38,588 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 00:32:38,588 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 00:32:38,588 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 00:32:38,590 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 00:32:38,591 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 00:32:38,592 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fad2086d-8d4b-46b7-a361-ff27000d5422/bin/utaipan-g80aRyZoba/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-22 00:32:38,637 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 00:32:38,637 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 00:32:38,638 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 00:32:38,638 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 00:32:38,639 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 00:32:38,639 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 00:32:38,639 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 00:32:38,640 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 00:32:38,640 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 00:32:38,640 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 00:32:38,641 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 00:32:38,642 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 00:32:38,642 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 00:32:38,642 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 00:32:38,642 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 00:32:38,643 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 00:32:38,643 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 00:32:38,643 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 00:32:38,644 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 00:32:38,644 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-22 00:32:38,644 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 00:32:38,644 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-22 00:32:38,645 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 00:32:38,645 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-22 00:32:38,645 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 00:32:38,645 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-22 00:32:38,646 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-22 00:32:38,646 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-22 00:32:38,647 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 00:32:38,647 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-22 00:32:38,647 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 00:32:38,647 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 00:32:38,648 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 00:32:38,648 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 00:32:38,648 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 00:32:38,648 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 00:32:38,649 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-22 00:32:38,649 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 00:32:38,649 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 00:32:38,649 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-22 00:32:38,650 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 00:32:38,650 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_fad2086d-8d4b-46b7-a361-ff27000d5422/bin/utaipan-g80aRyZoba/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fad2086d-8d4b-46b7-a361-ff27000d5422/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bda512f5ab4e84c08e80fd02a1c07c8fba5ca60aa45d55edfde2cc268dd1288e [2022-11-22 00:32:38,959 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 00:32:38,986 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 00:32:38,990 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 00:32:38,992 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 00:32:38,992 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 00:32:38,994 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fad2086d-8d4b-46b7-a361-ff27000d5422/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_valuebound2.c [2022-11-22 00:32:42,051 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 00:32:42,312 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 00:32:42,313 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fad2086d-8d4b-46b7-a361-ff27000d5422/sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_valuebound2.c [2022-11-22 00:32:42,319 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fad2086d-8d4b-46b7-a361-ff27000d5422/bin/utaipan-g80aRyZoba/data/9937397ae/0fced9941f2048da813fd1bbae5b0a5c/FLAGd9cb8f35d [2022-11-22 00:32:42,334 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fad2086d-8d4b-46b7-a361-ff27000d5422/bin/utaipan-g80aRyZoba/data/9937397ae/0fced9941f2048da813fd1bbae5b0a5c [2022-11-22 00:32:42,336 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 00:32:42,338 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 00:32:42,339 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 00:32:42,340 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 00:32:42,343 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 00:32:42,344 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:32:42" (1/1) ... [2022-11-22 00:32:42,345 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2193c1ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:32:42, skipping insertion in model container [2022-11-22 00:32:42,345 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:32:42" (1/1) ... [2022-11-22 00:32:42,353 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 00:32:42,369 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 00:32:42,523 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_fad2086d-8d4b-46b7-a361-ff27000d5422/sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_valuebound2.c[490,503] [2022-11-22 00:32:42,543 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 00:32:42,553 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 00:32:42,565 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_fad2086d-8d4b-46b7-a361-ff27000d5422/sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_valuebound2.c[490,503] [2022-11-22 00:32:42,574 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 00:32:42,587 INFO L208 MainTranslator]: Completed translation [2022-11-22 00:32:42,588 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:32:42 WrapperNode [2022-11-22 00:32:42,588 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 00:32:42,589 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 00:32:42,589 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 00:32:42,589 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 00:32:42,596 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:32:42" (1/1) ... [2022-11-22 00:32:42,603 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:32:42" (1/1) ... [2022-11-22 00:32:42,630 INFO L138 Inliner]: procedures = 14, calls = 16, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 80 [2022-11-22 00:32:42,631 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 00:32:42,633 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 00:32:42,633 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 00:32:42,633 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 00:32:42,641 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:32:42" (1/1) ... [2022-11-22 00:32:42,642 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:32:42" (1/1) ... [2022-11-22 00:32:42,643 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:32:42" (1/1) ... [2022-11-22 00:32:42,643 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:32:42" (1/1) ... [2022-11-22 00:32:42,647 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:32:42" (1/1) ... [2022-11-22 00:32:42,651 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:32:42" (1/1) ... [2022-11-22 00:32:42,652 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:32:42" (1/1) ... [2022-11-22 00:32:42,653 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:32:42" (1/1) ... [2022-11-22 00:32:42,654 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 00:32:42,655 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 00:32:42,656 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 00:32:42,656 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 00:32:42,657 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:32:42" (1/1) ... [2022-11-22 00:32:42,663 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 00:32:42,683 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fad2086d-8d4b-46b7-a361-ff27000d5422/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:32:42,697 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fad2086d-8d4b-46b7-a361-ff27000d5422/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 00:32:42,706 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fad2086d-8d4b-46b7-a361-ff27000d5422/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 00:32:42,739 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-22 00:32:42,740 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-22 00:32:42,740 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-22 00:32:42,740 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-22 00:32:42,740 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 00:32:42,741 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 00:32:42,741 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-22 00:32:42,741 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-22 00:32:42,817 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 00:32:42,820 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 00:32:42,985 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 00:32:43,012 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 00:32:43,012 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-22 00:32:43,015 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:32:43 BoogieIcfgContainer [2022-11-22 00:32:43,015 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 00:32:43,017 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 00:32:43,017 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 00:32:43,021 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 00:32:43,021 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 12:32:42" (1/3) ... [2022-11-22 00:32:43,022 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1efef443 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:32:43, skipping insertion in model container [2022-11-22 00:32:43,022 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:32:42" (2/3) ... [2022-11-22 00:32:43,022 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1efef443 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:32:43, skipping insertion in model container [2022-11-22 00:32:43,023 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:32:43" (3/3) ... [2022-11-22 00:32:43,024 INFO L112 eAbstractionObserver]: Analyzing ICFG egcd3-ll_valuebound2.c [2022-11-22 00:32:43,067 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 00:32:43,068 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-22 00:32:43,138 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 00:32:43,145 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;@5187b015, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 00:32:43,145 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-22 00:32:43,150 INFO L276 IsEmpty]: Start isEmpty. Operand has 30 states, 17 states have (on average 1.4705882352941178) internal successors, (25), 18 states have internal predecessors, (25), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-11-22 00:32:43,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-22 00:32:43,158 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:32:43,159 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:32:43,159 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 00:32:43,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:32:43,165 INFO L85 PathProgramCache]: Analyzing trace with hash 1539547475, now seen corresponding path program 1 times [2022-11-22 00:32:43,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:32:43,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737187675] [2022-11-22 00:32:43,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:32:43,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:32:43,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:32:43,423 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:32:43,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737187675] [2022-11-22 00:32:43,424 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-22 00:32:43,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1781394275] [2022-11-22 00:32:43,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:32:43,425 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:32:43,425 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fad2086d-8d4b-46b7-a361-ff27000d5422/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:32:43,432 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fad2086d-8d4b-46b7-a361-ff27000d5422/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 00:32:43,461 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fad2086d-8d4b-46b7-a361-ff27000d5422/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-22 00:32:43,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:32:43,568 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-22 00:32:43,573 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 00:32:43,609 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-22 00:32:43,609 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 00:32:43,610 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1781394275] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:32:43,610 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:32:43,611 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 00:32:43,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449794465] [2022-11-22 00:32:43,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:32:43,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-22 00:32:43,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:32:43,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-22 00:32:43,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-22 00:32:43,671 INFO L87 Difference]: Start difference. First operand has 30 states, 17 states have (on average 1.4705882352941178) internal successors, (25), 18 states have internal predecessors, (25), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-22 00:32:43,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:32:43,725 INFO L93 Difference]: Finished difference Result 51 states and 79 transitions. [2022-11-22 00:32:43,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-22 00:32:43,727 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 20 [2022-11-22 00:32:43,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:32:43,736 INFO L225 Difference]: With dead ends: 51 [2022-11-22 00:32:43,737 INFO L226 Difference]: Without dead ends: 28 [2022-11-22 00:32:43,745 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-22 00:32:43,752 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 00:32:43,754 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 36 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 00:32:43,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-11-22 00:32:43,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2022-11-22 00:32:43,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 16 states have (on average 1.25) internal successors, (20), 17 states have internal predecessors, (20), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-22 00:32:43,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 37 transitions. [2022-11-22 00:32:43,801 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 37 transitions. Word has length 20 [2022-11-22 00:32:43,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:32:43,804 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 37 transitions. [2022-11-22 00:32:43,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-22 00:32:43,805 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 37 transitions. [2022-11-22 00:32:43,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-22 00:32:43,806 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:32:43,807 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:32:43,813 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fad2086d-8d4b-46b7-a361-ff27000d5422/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-22 00:32:44,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fad2086d-8d4b-46b7-a361-ff27000d5422/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-11-22 00:32:44,013 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 00:32:44,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:32:44,014 INFO L85 PathProgramCache]: Analyzing trace with hash 1863391506, now seen corresponding path program 1 times [2022-11-22 00:32:44,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:32:44,015 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413475448] [2022-11-22 00:32:44,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:32:44,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:32:44,037 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-22 00:32:44,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2126205602] [2022-11-22 00:32:44,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:32:44,054 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:32:44,054 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fad2086d-8d4b-46b7-a361-ff27000d5422/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:32:44,055 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fad2086d-8d4b-46b7-a361-ff27000d5422/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 00:32:44,088 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fad2086d-8d4b-46b7-a361-ff27000d5422/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-22 00:32:44,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:32:44,139 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-22 00:32:44,141 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 00:32:44,243 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-22 00:32:44,243 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 00:32:44,243 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:32:44,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413475448] [2022-11-22 00:32:44,244 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-22 00:32:44,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2126205602] [2022-11-22 00:32:44,244 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2126205602] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:32:44,245 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:32:44,245 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 00:32:44,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307092586] [2022-11-22 00:32:44,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:32:44,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 00:32:44,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:32:44,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 00:32:44,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 00:32:44,248 INFO L87 Difference]: Start difference. First operand 28 states and 37 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-22 00:32:44,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:32:44,380 INFO L93 Difference]: Finished difference Result 47 states and 62 transitions. [2022-11-22 00:32:44,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 00:32:44,381 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 21 [2022-11-22 00:32:44,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:32:44,384 INFO L225 Difference]: With dead ends: 47 [2022-11-22 00:32:44,385 INFO L226 Difference]: Without dead ends: 40 [2022-11-22 00:32:44,385 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-22 00:32:44,387 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 30 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 00:32:44,388 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 78 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 00:32:44,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2022-11-22 00:32:44,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 30. [2022-11-22 00:32:44,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 19 states have internal predecessors, (22), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-22 00:32:44,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 39 transitions. [2022-11-22 00:32:44,406 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 39 transitions. Word has length 21 [2022-11-22 00:32:44,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:32:44,407 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 39 transitions. [2022-11-22 00:32:44,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-22 00:32:44,408 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 39 transitions. [2022-11-22 00:32:44,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-22 00:32:44,410 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:32:44,410 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:32:44,420 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fad2086d-8d4b-46b7-a361-ff27000d5422/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-22 00:32:44,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fad2086d-8d4b-46b7-a361-ff27000d5422/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:32:44,616 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 00:32:44,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:32:44,617 INFO L85 PathProgramCache]: Analyzing trace with hash -73319670, now seen corresponding path program 1 times [2022-11-22 00:32:44,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:32:44,617 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334132503] [2022-11-22 00:32:44,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:32:44,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:32:44,635 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-22 00:32:44,635 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [842975805] [2022-11-22 00:32:44,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:32:44,635 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:32:44,636 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fad2086d-8d4b-46b7-a361-ff27000d5422/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:32:44,637 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fad2086d-8d4b-46b7-a361-ff27000d5422/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 00:32:44,644 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fad2086d-8d4b-46b7-a361-ff27000d5422/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-22 00:32:44,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:32:44,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-22 00:32:44,700 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 00:32:45,092 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-22 00:32:45,093 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 00:32:45,272 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-22 00:32:45,272 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:32:45,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334132503] [2022-11-22 00:32:45,273 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-22 00:32:45,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [842975805] [2022-11-22 00:32:45,273 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [842975805] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-22 00:32:45,274 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-22 00:32:45,274 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 15 [2022-11-22 00:32:45,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428356225] [2022-11-22 00:32:45,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:32:45,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-22 00:32:45,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:32:45,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-22 00:32:45,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2022-11-22 00:32:45,277 INFO L87 Difference]: Start difference. First operand 30 states and 39 transitions. Second operand has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 states have internal predecessors, (12), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-22 00:32:45,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:32:45,404 INFO L93 Difference]: Finished difference Result 46 states and 60 transitions. [2022-11-22 00:32:45,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-22 00:32:45,405 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 states have internal predecessors, (12), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 24 [2022-11-22 00:32:45,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:32:45,406 INFO L225 Difference]: With dead ends: 46 [2022-11-22 00:32:45,406 INFO L226 Difference]: Without dead ends: 44 [2022-11-22 00:32:45,407 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2022-11-22 00:32:45,408 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 17 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 00:32:45,408 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 144 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 00:32:45,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-11-22 00:32:45,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2022-11-22 00:32:45,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 26 states have (on average 1.2307692307692308) internal successors, (32), 27 states have internal predecessors, (32), 13 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-22 00:32:45,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 57 transitions. [2022-11-22 00:32:45,421 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 57 transitions. Word has length 24 [2022-11-22 00:32:45,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:32:45,422 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 57 transitions. [2022-11-22 00:32:45,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 states have internal predecessors, (12), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-22 00:32:45,423 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 57 transitions. [2022-11-22 00:32:45,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-22 00:32:45,425 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:32:45,426 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:32:45,435 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fad2086d-8d4b-46b7-a361-ff27000d5422/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-22 00:32:45,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fad2086d-8d4b-46b7-a361-ff27000d5422/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:32:45,627 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 00:32:45,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:32:45,627 INFO L85 PathProgramCache]: Analyzing trace with hash -1101454984, now seen corresponding path program 1 times [2022-11-22 00:32:45,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:32:45,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698593187] [2022-11-22 00:32:45,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:32:45,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:32:45,652 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-22 00:32:45,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1806560371] [2022-11-22 00:32:45,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:32:45,655 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:32:45,656 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fad2086d-8d4b-46b7-a361-ff27000d5422/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:32:45,662 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fad2086d-8d4b-46b7-a361-ff27000d5422/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 00:32:45,664 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fad2086d-8d4b-46b7-a361-ff27000d5422/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-22 00:32:45,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:32:45,731 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-22 00:32:45,735 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 00:32:45,789 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-22 00:32:45,789 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 00:32:45,868 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-22 00:32:45,868 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:32:45,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698593187] [2022-11-22 00:32:45,868 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-22 00:32:45,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1806560371] [2022-11-22 00:32:45,869 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1806560371] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 00:32:45,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1571018114] [2022-11-22 00:32:45,888 INFO L159 IcfgInterpreter]: Started Sifa with 19 locations of interest [2022-11-22 00:32:45,888 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 00:32:45,892 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 00:32:45,902 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 00:32:45,903 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 00:32:46,728 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 58 for LOIs [2022-11-22 00:32:46,750 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 00:32:48,725 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1571018114] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:32:48,725 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-22 00:32:48,725 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [7, 7] total 18 [2022-11-22 00:32:48,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917815904] [2022-11-22 00:32:48,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:32:48,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-22 00:32:48,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:32:48,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-22 00:32:48,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=214, Unknown=0, NotChecked=0, Total=306 [2022-11-22 00:32:48,728 INFO L87 Difference]: Start difference. First operand 43 states and 57 transitions. Second operand has 13 states, 8 states have (on average 1.625) internal successors, (13), 7 states have internal predecessors, (13), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-22 00:32:49,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:32:49,039 INFO L93 Difference]: Finished difference Result 71 states and 97 transitions. [2022-11-22 00:32:49,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-22 00:32:49,040 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 8 states have (on average 1.625) internal successors, (13), 7 states have internal predecessors, (13), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 26 [2022-11-22 00:32:49,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:32:49,041 INFO L225 Difference]: With dead ends: 71 [2022-11-22 00:32:49,042 INFO L226 Difference]: Without dead ends: 64 [2022-11-22 00:32:49,042 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 54 SyntacticMatches, 6 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=92, Invalid=214, Unknown=0, NotChecked=0, Total=306 [2022-11-22 00:32:49,043 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 56 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-22 00:32:49,044 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 48 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-22 00:32:49,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-11-22 00:32:49,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 50. [2022-11-22 00:32:49,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 33 states have (on average 1.2424242424242424) internal successors, (41), 34 states have internal predecessors, (41), 13 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-22 00:32:49,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 66 transitions. [2022-11-22 00:32:49,077 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 66 transitions. Word has length 26 [2022-11-22 00:32:49,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:32:49,077 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 66 transitions. [2022-11-22 00:32:49,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 8 states have (on average 1.625) internal successors, (13), 7 states have internal predecessors, (13), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-22 00:32:49,078 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 66 transitions. [2022-11-22 00:32:49,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-22 00:32:49,079 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:32:49,079 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:32:49,089 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fad2086d-8d4b-46b7-a361-ff27000d5422/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-22 00:32:49,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fad2086d-8d4b-46b7-a361-ff27000d5422/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:32:49,285 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 00:32:49,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:32:49,285 INFO L85 PathProgramCache]: Analyzing trace with hash -156943002, now seen corresponding path program 1 times [2022-11-22 00:32:49,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:32:49,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955433383] [2022-11-22 00:32:49,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:32:49,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:32:49,299 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-22 00:32:49,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2077110155] [2022-11-22 00:32:49,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:32:49,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:32:49,300 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fad2086d-8d4b-46b7-a361-ff27000d5422/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:32:49,301 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fad2086d-8d4b-46b7-a361-ff27000d5422/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 00:32:49,305 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fad2086d-8d4b-46b7-a361-ff27000d5422/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-22 00:32:49,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:32:49,354 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 30 conjunts are in the unsatisfiable core [2022-11-22 00:32:49,357 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 00:32:49,691 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-22 00:32:49,691 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 00:32:49,927 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:32:49,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955433383] [2022-11-22 00:32:49,928 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-22 00:32:49,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2077110155] [2022-11-22 00:32:49,928 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2077110155] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 00:32:49,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1066018141] [2022-11-22 00:32:49,930 INFO L159 IcfgInterpreter]: Started Sifa with 22 locations of interest [2022-11-22 00:32:49,930 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 00:32:49,931 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 00:32:49,931 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 00:32:49,931 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 00:32:50,372 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 38 for LOIs [2022-11-22 00:32:50,382 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 58 for LOIs [2022-11-22 00:32:50,400 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 00:32:51,921 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1066018141] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:32:51,921 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-22 00:32:51,921 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [13] total 26 [2022-11-22 00:32:51,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266549959] [2022-11-22 00:32:51,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:32:51,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-22 00:32:51,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:32:51,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-22 00:32:51,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=652, Unknown=0, NotChecked=0, Total=812 [2022-11-22 00:32:51,923 INFO L87 Difference]: Start difference. First operand 50 states and 66 transitions. Second operand has 15 states, 10 states have (on average 1.4) internal successors, (14), 8 states have internal predecessors, (14), 5 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-22 00:32:52,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:32:52,369 INFO L93 Difference]: Finished difference Result 72 states and 97 transitions. [2022-11-22 00:32:52,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-22 00:32:52,370 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 10 states have (on average 1.4) internal successors, (14), 8 states have internal predecessors, (14), 5 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Word has length 29 [2022-11-22 00:32:52,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:32:52,371 INFO L225 Difference]: With dead ends: 72 [2022-11-22 00:32:52,371 INFO L226 Difference]: Without dead ends: 70 [2022-11-22 00:32:52,371 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 32 SyntacticMatches, 3 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=160, Invalid=652, Unknown=0, NotChecked=0, Total=812 [2022-11-22 00:32:52,372 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 99 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-22 00:32:52,372 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 58 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-22 00:32:52,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2022-11-22 00:32:52,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 65. [2022-11-22 00:32:52,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 39 states have (on average 1.2307692307692308) internal successors, (48), 41 states have internal predecessors, (48), 21 states have call successors, (21), 4 states have call predecessors, (21), 4 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2022-11-22 00:32:52,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 89 transitions. [2022-11-22 00:32:52,420 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 89 transitions. Word has length 29 [2022-11-22 00:32:52,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:32:52,421 INFO L495 AbstractCegarLoop]: Abstraction has 65 states and 89 transitions. [2022-11-22 00:32:52,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 10 states have (on average 1.4) internal successors, (14), 8 states have internal predecessors, (14), 5 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-22 00:32:52,423 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 89 transitions. [2022-11-22 00:32:52,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-22 00:32:52,423 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:32:52,424 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:32:52,430 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fad2086d-8d4b-46b7-a361-ff27000d5422/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-22 00:32:52,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fad2086d-8d4b-46b7-a361-ff27000d5422/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:32:52,629 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 00:32:52,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:32:52,630 INFO L85 PathProgramCache]: Analyzing trace with hash 187338980, now seen corresponding path program 1 times [2022-11-22 00:32:52,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:32:52,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105550536] [2022-11-22 00:32:52,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:32:52,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:32:52,642 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-22 00:32:52,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1319157460] [2022-11-22 00:32:52,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:32:52,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:32:52,643 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fad2086d-8d4b-46b7-a361-ff27000d5422/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:32:52,644 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fad2086d-8d4b-46b7-a361-ff27000d5422/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 00:32:52,669 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fad2086d-8d4b-46b7-a361-ff27000d5422/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-22 00:32:52,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:32:52,707 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-22 00:32:52,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 00:32:52,851 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-22 00:32:52,851 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 00:32:53,008 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-22 00:32:53,009 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:32:53,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105550536] [2022-11-22 00:32:53,009 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-22 00:32:53,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1319157460] [2022-11-22 00:32:53,009 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1319157460] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 00:32:53,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1527477178] [2022-11-22 00:32:53,011 INFO L159 IcfgInterpreter]: Started Sifa with 20 locations of interest [2022-11-22 00:32:53,011 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 00:32:53,012 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 00:32:53,012 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 00:32:53,012 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 00:32:53,752 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 38 for LOIs [2022-11-22 00:32:53,758 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 58 for LOIs [2022-11-22 00:32:53,773 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 00:32:56,365 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1527477178] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:32:56,365 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-22 00:32:56,365 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [8, 6] total 26 [2022-11-22 00:32:56,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503698549] [2022-11-22 00:32:56,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:32:56,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-22 00:32:56,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:32:56,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-22 00:32:56,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=525, Unknown=0, NotChecked=0, Total=650 [2022-11-22 00:32:56,368 INFO L87 Difference]: Start difference. First operand 65 states and 89 transitions. Second operand has 16 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 9 states have internal predecessors, (14), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-22 00:32:57,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:32:57,340 INFO L93 Difference]: Finished difference Result 115 states and 159 transitions. [2022-11-22 00:32:57,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-22 00:32:57,340 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 9 states have internal predecessors, (14), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 29 [2022-11-22 00:32:57,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:32:57,342 INFO L225 Difference]: With dead ends: 115 [2022-11-22 00:32:57,343 INFO L226 Difference]: Without dead ends: 113 [2022-11-22 00:32:57,343 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 59 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=140, Invalid=562, Unknown=0, NotChecked=0, Total=702 [2022-11-22 00:32:57,344 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 133 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-22 00:32:57,345 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 64 Invalid, 337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-22 00:32:57,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2022-11-22 00:32:57,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 108. [2022-11-22 00:32:57,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 63 states have (on average 1.253968253968254) internal successors, (79), 64 states have internal predecessors, (79), 37 states have call successors, (37), 7 states have call predecessors, (37), 7 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2022-11-22 00:32:57,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 152 transitions. [2022-11-22 00:32:57,406 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 152 transitions. Word has length 29 [2022-11-22 00:32:57,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:32:57,407 INFO L495 AbstractCegarLoop]: Abstraction has 108 states and 152 transitions. [2022-11-22 00:32:57,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 9 states have internal predecessors, (14), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-22 00:32:57,407 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 152 transitions. [2022-11-22 00:32:57,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-11-22 00:32:57,409 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:32:57,409 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:32:57,420 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fad2086d-8d4b-46b7-a361-ff27000d5422/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-22 00:32:57,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fad2086d-8d4b-46b7-a361-ff27000d5422/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-22 00:32:57,615 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 00:32:57,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:32:57,616 INFO L85 PathProgramCache]: Analyzing trace with hash -1193022788, now seen corresponding path program 1 times [2022-11-22 00:32:57,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:32:57,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446509277] [2022-11-22 00:32:57,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:32:57,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:32:57,629 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-22 00:32:57,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [417596671] [2022-11-22 00:32:57,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:32:57,630 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:32:57,630 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fad2086d-8d4b-46b7-a361-ff27000d5422/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:32:57,631 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fad2086d-8d4b-46b7-a361-ff27000d5422/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 00:32:57,657 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fad2086d-8d4b-46b7-a361-ff27000d5422/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-22 00:32:57,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:32:57,714 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 65 conjunts are in the unsatisfiable core [2022-11-22 00:32:57,717 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 00:32:58,544 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-11-22 00:32:58,544 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 00:32:59,317 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 10 proven. 11 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-11-22 00:32:59,317 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:32:59,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446509277] [2022-11-22 00:32:59,317 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-22 00:32:59,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [417596671] [2022-11-22 00:32:59,318 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [417596671] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 00:32:59,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1013421615] [2022-11-22 00:32:59,323 INFO L159 IcfgInterpreter]: Started Sifa with 28 locations of interest [2022-11-22 00:32:59,324 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 00:32:59,324 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 00:32:59,324 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 00:32:59,324 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 00:33:06,356 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 8 for LOIs [2022-11-22 00:33:06,361 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 58 for LOIs [2022-11-22 00:33:06,375 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 00:33:13,738 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2235#(and (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-22 00:33:13,738 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 00:33:13,738 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-22 00:33:13,739 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 13] total 26 [2022-11-22 00:33:13,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012487291] [2022-11-22 00:33:13,739 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-22 00:33:13,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-22 00:33:13,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:33:13,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-22 00:33:13,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=226, Invalid=1844, Unknown=0, NotChecked=0, Total=2070 [2022-11-22 00:33:13,741 INFO L87 Difference]: Start difference. First operand 108 states and 152 transitions. Second operand has 26 states, 23 states have (on average 1.9130434782608696) internal successors, (44), 23 states have internal predecessors, (44), 8 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) [2022-11-22 00:33:19,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:33:19,245 INFO L93 Difference]: Finished difference Result 243 states and 346 transitions. [2022-11-22 00:33:19,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-22 00:33:19,246 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 23 states have (on average 1.9130434782608696) internal successors, (44), 23 states have internal predecessors, (44), 8 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) Word has length 51 [2022-11-22 00:33:19,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:33:19,249 INFO L225 Difference]: With dead ends: 243 [2022-11-22 00:33:19,249 INFO L226 Difference]: Without dead ends: 181 [2022-11-22 00:33:19,251 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 100 SyntacticMatches, 7 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1701 ImplicationChecksByTransitivity, 9.8s TimeCoverageRelationStatistics Valid=615, Invalid=4077, Unknown=0, NotChecked=0, Total=4692 [2022-11-22 00:33:19,252 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 147 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 908 mSolverCounterSat, 208 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 1116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 208 IncrementalHoareTripleChecker+Valid, 908 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-11-22 00:33:19,252 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 155 Invalid, 1116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [208 Valid, 908 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-11-22 00:33:19,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2022-11-22 00:33:19,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 136. [2022-11-22 00:33:19,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 87 states have (on average 1.2413793103448276) internal successors, (108), 88 states have internal predecessors, (108), 41 states have call successors, (41), 7 states have call predecessors, (41), 7 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2022-11-22 00:33:19,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 189 transitions. [2022-11-22 00:33:19,380 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 189 transitions. Word has length 51 [2022-11-22 00:33:19,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:33:19,381 INFO L495 AbstractCegarLoop]: Abstraction has 136 states and 189 transitions. [2022-11-22 00:33:19,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 23 states have (on average 1.9130434782608696) internal successors, (44), 23 states have internal predecessors, (44), 8 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) [2022-11-22 00:33:19,381 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 189 transitions. [2022-11-22 00:33:19,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-11-22 00:33:19,383 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:33:19,384 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:33:19,393 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fad2086d-8d4b-46b7-a361-ff27000d5422/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-22 00:33:19,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fad2086d-8d4b-46b7-a361-ff27000d5422/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:33:19,589 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 00:33:19,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:33:19,590 INFO L85 PathProgramCache]: Analyzing trace with hash 1047855047, now seen corresponding path program 1 times [2022-11-22 00:33:19,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:33:19,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467040874] [2022-11-22 00:33:19,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:33:19,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:33:19,603 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-22 00:33:19,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1652016134] [2022-11-22 00:33:19,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:33:19,604 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:33:19,605 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fad2086d-8d4b-46b7-a361-ff27000d5422/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:33:19,610 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fad2086d-8d4b-46b7-a361-ff27000d5422/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 00:33:19,613 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fad2086d-8d4b-46b7-a361-ff27000d5422/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-22 00:33:19,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:33:19,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 34 conjunts are in the unsatisfiable core [2022-11-22 00:33:19,677 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 00:33:19,933 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 24 proven. 17 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2022-11-22 00:33:19,933 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 00:33:20,112 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 27 proven. 10 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2022-11-22 00:33:20,113 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:33:20,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467040874] [2022-11-22 00:33:20,113 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-22 00:33:20,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1652016134] [2022-11-22 00:33:20,113 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1652016134] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 00:33:20,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [896838405] [2022-11-22 00:33:20,116 INFO L159 IcfgInterpreter]: Started Sifa with 25 locations of interest [2022-11-22 00:33:20,116 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 00:33:20,117 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 00:33:20,117 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 00:33:20,117 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 00:33:25,721 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 32 for LOIs [2022-11-22 00:33:25,776 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 58 for LOIs [2022-11-22 00:33:25,790 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 00:33:28,466 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3270#(and (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-22 00:33:28,466 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 00:33:28,466 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-22 00:33:28,467 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 7] total 17 [2022-11-22 00:33:28,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849059554] [2022-11-22 00:33:28,467 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-22 00:33:28,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-22 00:33:28,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:33:28,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-22 00:33:28,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=954, Unknown=0, NotChecked=0, Total=1122 [2022-11-22 00:33:28,470 INFO L87 Difference]: Start difference. First operand 136 states and 189 transitions. Second operand has 17 states, 16 states have (on average 2.125) internal successors, (34), 14 states have internal predecessors, (34), 5 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (22), 7 states have call predecessors, (22), 5 states have call successors, (22) [2022-11-22 00:33:29,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:33:29,147 INFO L93 Difference]: Finished difference Result 237 states and 318 transitions. [2022-11-22 00:33:29,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-22 00:33:29,148 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.125) internal successors, (34), 14 states have internal predecessors, (34), 5 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (22), 7 states have call predecessors, (22), 5 states have call successors, (22) Word has length 61 [2022-11-22 00:33:29,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:33:29,152 INFO L225 Difference]: With dead ends: 237 [2022-11-22 00:33:29,152 INFO L226 Difference]: Without dead ends: 164 [2022-11-22 00:33:29,158 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 145 SyntacticMatches, 9 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 652 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=241, Invalid=1481, Unknown=0, NotChecked=0, Total=1722 [2022-11-22 00:33:29,159 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 67 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 513 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 567 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 513 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-22 00:33:29,160 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 160 Invalid, 567 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 513 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-22 00:33:29,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2022-11-22 00:33:29,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 154. [2022-11-22 00:33:29,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 98 states have (on average 1.2040816326530612) internal successors, (118), 99 states have internal predecessors, (118), 45 states have call successors, (45), 10 states have call predecessors, (45), 10 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2022-11-22 00:33:29,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 207 transitions. [2022-11-22 00:33:29,287 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 207 transitions. Word has length 61 [2022-11-22 00:33:29,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:33:29,287 INFO L495 AbstractCegarLoop]: Abstraction has 154 states and 207 transitions. [2022-11-22 00:33:29,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.125) internal successors, (34), 14 states have internal predecessors, (34), 5 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (22), 7 states have call predecessors, (22), 5 states have call successors, (22) [2022-11-22 00:33:29,288 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 207 transitions. [2022-11-22 00:33:29,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-11-22 00:33:29,290 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:33:29,290 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:33:29,296 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fad2086d-8d4b-46b7-a361-ff27000d5422/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-22 00:33:29,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fad2086d-8d4b-46b7-a361-ff27000d5422/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:33:29,496 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 00:33:29,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:33:29,496 INFO L85 PathProgramCache]: Analyzing trace with hash -94425734, now seen corresponding path program 1 times [2022-11-22 00:33:29,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:33:29,497 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998551337] [2022-11-22 00:33:29,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:33:29,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:33:29,507 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-22 00:33:29,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1244800889] [2022-11-22 00:33:29,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:33:29,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:33:29,508 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fad2086d-8d4b-46b7-a361-ff27000d5422/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:33:29,509 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fad2086d-8d4b-46b7-a361-ff27000d5422/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 00:33:29,541 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fad2086d-8d4b-46b7-a361-ff27000d5422/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-22 00:33:29,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:33:29,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-22 00:33:29,582 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 00:33:29,700 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 28 proven. 2 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-22 00:33:29,701 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 00:33:29,824 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 24 proven. 6 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-22 00:33:29,824 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:33:29,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998551337] [2022-11-22 00:33:29,824 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-22 00:33:29,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1244800889] [2022-11-22 00:33:29,825 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1244800889] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 00:33:29,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [623132720] [2022-11-22 00:33:29,827 INFO L159 IcfgInterpreter]: Started Sifa with 27 locations of interest [2022-11-22 00:33:29,827 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 00:33:29,828 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 00:33:29,828 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 00:33:29,828 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 00:33:36,414 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 50 for LOIs [2022-11-22 00:33:36,479 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 58 for LOIs [2022-11-22 00:33:36,492 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 00:33:39,164 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4264#(and (<= |#NULL.offset| 0) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= __VERIFIER_assert_~cond 0) (<= 0 |#NULL.offset|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-22 00:33:39,164 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 00:33:39,164 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-22 00:33:39,164 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2022-11-22 00:33:39,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202925790] [2022-11-22 00:33:39,165 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-22 00:33:39,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-22 00:33:39,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:33:39,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-22 00:33:39,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=923, Unknown=0, NotChecked=0, Total=1056 [2022-11-22 00:33:39,167 INFO L87 Difference]: Start difference. First operand 154 states and 207 transitions. Second operand has 14 states, 13 states have (on average 3.0) internal successors, (39), 12 states have internal predecessors, (39), 6 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) [2022-11-22 00:33:39,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:33:39,680 INFO L93 Difference]: Finished difference Result 207 states and 279 transitions. [2022-11-22 00:33:39,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-22 00:33:39,680 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.0) internal successors, (39), 12 states have internal predecessors, (39), 6 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) Word has length 59 [2022-11-22 00:33:39,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:33:39,684 INFO L225 Difference]: With dead ends: 207 [2022-11-22 00:33:39,685 INFO L226 Difference]: Without dead ends: 141 [2022-11-22 00:33:39,685 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 137 SyntacticMatches, 7 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 574 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=202, Invalid=1358, Unknown=0, NotChecked=0, Total=1560 [2022-11-22 00:33:39,688 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 69 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 288 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-22 00:33:39,689 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 178 Invalid, 364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 288 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-22 00:33:39,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2022-11-22 00:33:39,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 122. [2022-11-22 00:33:39,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 74 states have (on average 1.1216216216216217) internal successors, (83), 75 states have internal predecessors, (83), 37 states have call successors, (37), 10 states have call predecessors, (37), 10 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2022-11-22 00:33:39,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 156 transitions. [2022-11-22 00:33:39,783 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 156 transitions. Word has length 59 [2022-11-22 00:33:39,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:33:39,784 INFO L495 AbstractCegarLoop]: Abstraction has 122 states and 156 transitions. [2022-11-22 00:33:39,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.0) internal successors, (39), 12 states have internal predecessors, (39), 6 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) [2022-11-22 00:33:39,784 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 156 transitions. [2022-11-22 00:33:39,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-22 00:33:39,786 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:33:39,786 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:33:39,794 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fad2086d-8d4b-46b7-a361-ff27000d5422/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-22 00:33:39,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fad2086d-8d4b-46b7-a361-ff27000d5422/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:33:39,992 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 00:33:39,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:33:39,992 INFO L85 PathProgramCache]: Analyzing trace with hash 148795157, now seen corresponding path program 1 times [2022-11-22 00:33:39,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:33:39,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250210034] [2022-11-22 00:33:39,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:33:39,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:33:40,003 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-22 00:33:40,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [442526035] [2022-11-22 00:33:40,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:33:40,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:33:40,003 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fad2086d-8d4b-46b7-a361-ff27000d5422/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:33:40,004 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fad2086d-8d4b-46b7-a361-ff27000d5422/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 00:33:40,009 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fad2086d-8d4b-46b7-a361-ff27000d5422/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-22 00:33:40,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:33:40,068 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-22 00:33:40,070 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 00:33:40,153 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 23 proven. 22 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2022-11-22 00:33:40,154 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 00:33:40,272 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 23 proven. 22 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2022-11-22 00:33:40,273 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:33:40,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250210034] [2022-11-22 00:33:40,274 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-22 00:33:40,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [442526035] [2022-11-22 00:33:40,274 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [442526035] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 00:33:40,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [77964095] [2022-11-22 00:33:40,276 INFO L159 IcfgInterpreter]: Started Sifa with 27 locations of interest [2022-11-22 00:33:40,276 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 00:33:40,276 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 00:33:40,277 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 00:33:40,277 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 00:33:46,078 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 8 for LOIs [2022-11-22 00:33:46,081 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 58 for LOIs [2022-11-22 00:33:46,094 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 00:33:48,505 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5261#(and (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-22 00:33:48,505 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 00:33:48,506 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-22 00:33:48,506 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 9 [2022-11-22 00:33:48,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545052161] [2022-11-22 00:33:48,506 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-22 00:33:48,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-22 00:33:48,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:33:48,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-22 00:33:48,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=501, Unknown=0, NotChecked=0, Total=600 [2022-11-22 00:33:48,508 INFO L87 Difference]: Start difference. First operand 122 states and 156 transitions. Second operand has 9 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 8 states have internal predecessors, (30), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-22 00:33:48,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:33:48,676 INFO L93 Difference]: Finished difference Result 132 states and 164 transitions. [2022-11-22 00:33:48,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-22 00:33:48,677 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 8 states have internal predecessors, (30), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 76 [2022-11-22 00:33:48,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:33:48,678 INFO L225 Difference]: With dead ends: 132 [2022-11-22 00:33:48,678 INFO L226 Difference]: Without dead ends: 130 [2022-11-22 00:33:48,679 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 180 SyntacticMatches, 23 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 590 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=115, Invalid=587, Unknown=0, NotChecked=0, Total=702 [2022-11-22 00:33:48,679 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 16 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 00:33:48,679 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 142 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 00:33:48,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2022-11-22 00:33:48,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2022-11-22 00:33:48,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 80 states have (on average 1.1125) internal successors, (89), 81 states have internal predecessors, (89), 37 states have call successors, (37), 12 states have call predecessors, (37), 12 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2022-11-22 00:33:48,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 162 transitions. [2022-11-22 00:33:48,743 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 162 transitions. Word has length 76 [2022-11-22 00:33:48,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:33:48,743 INFO L495 AbstractCegarLoop]: Abstraction has 130 states and 162 transitions. [2022-11-22 00:33:48,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 8 states have internal predecessors, (30), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-22 00:33:48,743 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 162 transitions. [2022-11-22 00:33:48,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-22 00:33:48,745 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:33:48,745 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:33:48,750 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fad2086d-8d4b-46b7-a361-ff27000d5422/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-22 00:33:48,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fad2086d-8d4b-46b7-a361-ff27000d5422/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-22 00:33:48,950 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 00:33:48,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:33:48,951 INFO L85 PathProgramCache]: Analyzing trace with hash 1021259487, now seen corresponding path program 2 times [2022-11-22 00:33:48,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:33:48,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053976986] [2022-11-22 00:33:48,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:33:48,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:33:48,962 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-22 00:33:48,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [657909864] [2022-11-22 00:33:48,962 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-22 00:33:48,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:33:48,962 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fad2086d-8d4b-46b7-a361-ff27000d5422/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:33:48,965 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fad2086d-8d4b-46b7-a361-ff27000d5422/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 00:33:48,968 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fad2086d-8d4b-46b7-a361-ff27000d5422/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-22 00:33:49,014 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-22 00:33:49,014 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 00:33:49,016 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-22 00:33:49,018 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 00:33:49,183 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 16 proven. 10 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2022-11-22 00:33:49,183 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 00:33:49,279 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:33:49,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053976986] [2022-11-22 00:33:49,280 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-22 00:33:49,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [657909864] [2022-11-22 00:33:49,280 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [657909864] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 00:33:49,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [816319762] [2022-11-22 00:33:49,282 INFO L159 IcfgInterpreter]: Started Sifa with 27 locations of interest [2022-11-22 00:33:49,282 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 00:33:49,283 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 00:33:49,283 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 00:33:49,283 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 00:33:55,179 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 39 for LOIs [2022-11-22 00:33:55,223 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 58 for LOIs [2022-11-22 00:33:55,236 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 00:33:57,300 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5957#(and (<= |#NULL.offset| 0) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= __VERIFIER_assert_~cond 0) (<= 0 |#NULL.offset|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-22 00:33:57,300 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 00:33:57,300 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-22 00:33:57,301 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2022-11-22 00:33:57,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059452555] [2022-11-22 00:33:57,301 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-22 00:33:57,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-22 00:33:57,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:33:57,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-22 00:33:57,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=558, Unknown=0, NotChecked=0, Total=650 [2022-11-22 00:33:57,302 INFO L87 Difference]: Start difference. First operand 130 states and 162 transitions. Second operand has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-22 00:33:57,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:33:57,505 INFO L93 Difference]: Finished difference Result 170 states and 209 transitions. [2022-11-22 00:33:57,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 00:33:57,505 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 76 [2022-11-22 00:33:57,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:33:57,506 INFO L225 Difference]: With dead ends: 170 [2022-11-22 00:33:57,507 INFO L226 Difference]: Without dead ends: 168 [2022-11-22 00:33:57,507 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 125 SyntacticMatches, 17 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 442 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=98, Invalid=604, Unknown=0, NotChecked=0, Total=702 [2022-11-22 00:33:57,508 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 10 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 00:33:57,508 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 178 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 00:33:57,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2022-11-22 00:33:57,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 149. [2022-11-22 00:33:57,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 95 states have (on average 1.105263157894737) internal successors, (105), 97 states have internal predecessors, (105), 38 states have call successors, (38), 15 states have call predecessors, (38), 15 states have return successors, (37), 36 states have call predecessors, (37), 37 states have call successors, (37) [2022-11-22 00:33:57,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 180 transitions. [2022-11-22 00:33:57,584 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 180 transitions. Word has length 76 [2022-11-22 00:33:57,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:33:57,585 INFO L495 AbstractCegarLoop]: Abstraction has 149 states and 180 transitions. [2022-11-22 00:33:57,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-22 00:33:57,585 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 180 transitions. [2022-11-22 00:33:57,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-11-22 00:33:57,586 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:33:57,587 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:33:57,593 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fad2086d-8d4b-46b7-a361-ff27000d5422/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-22 00:33:57,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fad2086d-8d4b-46b7-a361-ff27000d5422/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-22 00:33:57,791 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 00:33:57,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:33:57,791 INFO L85 PathProgramCache]: Analyzing trace with hash 1897496259, now seen corresponding path program 1 times [2022-11-22 00:33:57,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:33:57,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392513628] [2022-11-22 00:33:57,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:33:57,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:33:57,801 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-22 00:33:57,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2050706496] [2022-11-22 00:33:57,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:33:57,802 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:33:57,802 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fad2086d-8d4b-46b7-a361-ff27000d5422/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:33:57,804 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fad2086d-8d4b-46b7-a361-ff27000d5422/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 00:33:57,805 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fad2086d-8d4b-46b7-a361-ff27000d5422/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-22 00:33:57,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:33:57,871 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 82 conjunts are in the unsatisfiable core [2022-11-22 00:33:57,874 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 00:33:58,909 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 32 proven. 27 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2022-11-22 00:33:58,909 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 00:34:08,368 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 30 proven. 26 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2022-11-22 00:34:08,369 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:34:08,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392513628] [2022-11-22 00:34:08,369 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-22 00:34:08,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2050706496] [2022-11-22 00:34:08,369 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2050706496] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 00:34:08,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1546629930] [2022-11-22 00:34:08,371 INFO L159 IcfgInterpreter]: Started Sifa with 28 locations of interest [2022-11-22 00:34:08,371 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 00:34:08,372 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 00:34:08,372 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 00:34:08,372 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 00:34:14,280 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 39 for LOIs [2022-11-22 00:34:14,325 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 58 for LOIs [2022-11-22 00:34:14,338 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 00:34:32,285 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '6947#(and (<= |#NULL.offset| 0) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= __VERIFIER_assert_~cond 0) (<= 0 |#NULL.offset|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-22 00:34:32,285 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 00:34:32,285 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-22 00:34:32,285 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 16] total 32 [2022-11-22 00:34:32,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400933066] [2022-11-22 00:34:32,286 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-22 00:34:32,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-22 00:34:32,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:34:32,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-22 00:34:32,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=244, Invalid=2108, Unknown=0, NotChecked=0, Total=2352 [2022-11-22 00:34:32,288 INFO L87 Difference]: Start difference. First operand 149 states and 180 transitions. Second operand has 32 states, 29 states have (on average 1.9655172413793103) internal successors, (57), 30 states have internal predecessors, (57), 9 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (22), 7 states have call predecessors, (22), 7 states have call successors, (22) [2022-11-22 00:35:05,062 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 5.70s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-22 00:35:18,113 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-22 00:35:21,186 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-22 00:35:23,643 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-22 00:35:29,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:35:29,438 INFO L93 Difference]: Finished difference Result 275 states and 370 transitions. [2022-11-22 00:35:29,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-11-22 00:35:29,439 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 29 states have (on average 1.9655172413793103) internal successors, (57), 30 states have internal predecessors, (57), 9 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (22), 7 states have call predecessors, (22), 7 states have call successors, (22) Word has length 78 [2022-11-22 00:35:29,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:35:29,441 INFO L225 Difference]: With dead ends: 275 [2022-11-22 00:35:29,441 INFO L226 Difference]: Without dead ends: 271 [2022-11-22 00:35:29,444 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 168 SyntacticMatches, 17 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4473 ImplicationChecksByTransitivity, 53.7s TimeCoverageRelationStatistics Valid=1545, Invalid=9585, Unknown=0, NotChecked=0, Total=11130 [2022-11-22 00:35:29,445 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 615 mSDsluCounter, 260 mSDsCounter, 0 mSdLazyCounter, 2128 mSolverCounterSat, 794 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 615 SdHoareTripleChecker+Valid, 307 SdHoareTripleChecker+Invalid, 2925 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 794 IncrementalHoareTripleChecker+Valid, 2128 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.6s IncrementalHoareTripleChecker+Time [2022-11-22 00:35:29,445 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [615 Valid, 307 Invalid, 2925 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [794 Valid, 2128 Invalid, 3 Unknown, 0 Unchecked, 25.6s Time] [2022-11-22 00:35:29,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2022-11-22 00:35:29,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 231. [2022-11-22 00:35:29,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 146 states have (on average 1.1369863013698631) internal successors, (166), 148 states have internal predecessors, (166), 66 states have call successors, (66), 18 states have call predecessors, (66), 18 states have return successors, (65), 64 states have call predecessors, (65), 65 states have call successors, (65) [2022-11-22 00:35:29,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 297 transitions. [2022-11-22 00:35:29,633 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 297 transitions. Word has length 78 [2022-11-22 00:35:29,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:35:29,633 INFO L495 AbstractCegarLoop]: Abstraction has 231 states and 297 transitions. [2022-11-22 00:35:29,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 29 states have (on average 1.9655172413793103) internal successors, (57), 30 states have internal predecessors, (57), 9 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (22), 7 states have call predecessors, (22), 7 states have call successors, (22) [2022-11-22 00:35:29,634 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 297 transitions. [2022-11-22 00:35:29,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-11-22 00:35:29,635 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:35:29,635 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:35:29,646 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fad2086d-8d4b-46b7-a361-ff27000d5422/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-22 00:35:29,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fad2086d-8d4b-46b7-a361-ff27000d5422/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-22 00:35:29,841 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 00:35:29,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:35:29,841 INFO L85 PathProgramCache]: Analyzing trace with hash -1729932497, now seen corresponding path program 1 times [2022-11-22 00:35:29,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:35:29,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365507673] [2022-11-22 00:35:29,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:35:29,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:35:29,853 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-22 00:35:29,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [397661979] [2022-11-22 00:35:29,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:35:29,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:35:29,854 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fad2086d-8d4b-46b7-a361-ff27000d5422/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:35:29,854 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fad2086d-8d4b-46b7-a361-ff27000d5422/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 00:35:29,865 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fad2086d-8d4b-46b7-a361-ff27000d5422/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-22 00:35:29,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:35:29,915 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-22 00:35:29,917 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 00:35:30,053 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 90 proven. 9 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2022-11-22 00:35:30,053 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 00:35:30,253 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 28 proven. 11 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2022-11-22 00:35:30,253 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:35:30,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365507673] [2022-11-22 00:35:30,253 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-22 00:35:30,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [397661979] [2022-11-22 00:35:30,254 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [397661979] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 00:35:30,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [18641494] [2022-11-22 00:35:30,255 INFO L159 IcfgInterpreter]: Started Sifa with 26 locations of interest [2022-11-22 00:35:30,256 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 00:35:30,256 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 00:35:30,256 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 00:35:30,256 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 00:35:32,829 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 32 for LOIs [2022-11-22 00:35:32,873 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 58 for LOIs [2022-11-22 00:35:32,887 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 00:35:34,755 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '8356#(and (<= 0 |#NULL.base|) (<= |#NULL.offset| 0) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= __VERIFIER_assert_~cond 0) (<= |#NULL.base| 0) (<= 0 |#NULL.offset|) (<= 0 |#StackHeapBarrier|))' at error location [2022-11-22 00:35:34,755 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 00:35:34,755 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-22 00:35:34,755 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2022-11-22 00:35:34,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42349942] [2022-11-22 00:35:34,756 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-22 00:35:34,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-22 00:35:34,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:35:34,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-22 00:35:34,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=909, Unknown=0, NotChecked=0, Total=1056 [2022-11-22 00:35:34,757 INFO L87 Difference]: Start difference. First operand 231 states and 297 transitions. Second operand has 16 states, 15 states have (on average 2.466666666666667) internal successors, (37), 16 states have internal predecessors, (37), 8 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (28), 7 states have call predecessors, (28), 8 states have call successors, (28) [2022-11-22 00:35:35,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:35:35,447 INFO L93 Difference]: Finished difference Result 341 states and 448 transitions. [2022-11-22 00:35:35,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-22 00:35:35,448 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.466666666666667) internal successors, (37), 16 states have internal predecessors, (37), 8 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (28), 7 states have call predecessors, (28), 8 states have call successors, (28) Word has length 81 [2022-11-22 00:35:35,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:35:35,450 INFO L225 Difference]: With dead ends: 341 [2022-11-22 00:35:35,450 INFO L226 Difference]: Without dead ends: 232 [2022-11-22 00:35:35,451 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 198 SyntacticMatches, 12 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 847 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=262, Invalid=1630, Unknown=0, NotChecked=0, Total=1892 [2022-11-22 00:35:35,451 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 76 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 344 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-22 00:35:35,452 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 242 Invalid, 402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 344 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-22 00:35:35,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2022-11-22 00:35:35,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 232. [2022-11-22 00:35:35,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 145 states have (on average 1.1310344827586207) internal successors, (164), 147 states have internal predecessors, (164), 70 states have call successors, (70), 16 states have call predecessors, (70), 16 states have return successors, (69), 68 states have call predecessors, (69), 69 states have call successors, (69) [2022-11-22 00:35:35,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 303 transitions. [2022-11-22 00:35:35,669 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 303 transitions. Word has length 81 [2022-11-22 00:35:35,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:35:35,670 INFO L495 AbstractCegarLoop]: Abstraction has 232 states and 303 transitions. [2022-11-22 00:35:35,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.466666666666667) internal successors, (37), 16 states have internal predecessors, (37), 8 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (28), 7 states have call predecessors, (28), 8 states have call successors, (28) [2022-11-22 00:35:35,670 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 303 transitions. [2022-11-22 00:35:35,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-11-22 00:35:35,671 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:35:35,672 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 9, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:35:35,681 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fad2086d-8d4b-46b7-a361-ff27000d5422/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-22 00:35:35,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fad2086d-8d4b-46b7-a361-ff27000d5422/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-22 00:35:35,877 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 00:35:35,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:35:35,877 INFO L85 PathProgramCache]: Analyzing trace with hash 144664241, now seen corresponding path program 3 times [2022-11-22 00:35:35,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:35:35,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191480650] [2022-11-22 00:35:35,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:35:35,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:35:35,886 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-22 00:35:35,886 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [843362230] [2022-11-22 00:35:35,886 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-22 00:35:35,886 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:35:35,887 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fad2086d-8d4b-46b7-a361-ff27000d5422/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:35:35,887 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fad2086d-8d4b-46b7-a361-ff27000d5422/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 00:35:35,891 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fad2086d-8d4b-46b7-a361-ff27000d5422/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-22 00:35:35,951 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-22 00:35:35,951 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 00:35:35,953 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-22 00:35:35,954 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 00:35:36,162 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 58 proven. 13 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2022-11-22 00:35:36,162 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 00:35:36,401 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 28 proven. 13 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2022-11-22 00:35:36,402 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:35:36,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191480650] [2022-11-22 00:35:36,402 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-22 00:35:36,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [843362230] [2022-11-22 00:35:36,402 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [843362230] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 00:35:36,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1929427789] [2022-11-22 00:35:36,404 INFO L159 IcfgInterpreter]: Started Sifa with 27 locations of interest [2022-11-22 00:35:36,404 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 00:35:36,405 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 00:35:36,405 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 00:35:36,405 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 00:35:42,467 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 39 for LOIs [2022-11-22 00:35:42,511 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 58 for LOIs [2022-11-22 00:35:42,524 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 00:35:45,079 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '9774#(and (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-22 00:35:45,079 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 00:35:45,079 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-22 00:35:45,079 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 17 [2022-11-22 00:35:45,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168252494] [2022-11-22 00:35:45,080 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-22 00:35:45,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-22 00:35:45,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:35:45,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-22 00:35:45,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=928, Unknown=0, NotChecked=0, Total=1056 [2022-11-22 00:35:45,081 INFO L87 Difference]: Start difference. First operand 232 states and 303 transitions. Second operand has 17 states, 16 states have (on average 2.6875) internal successors, (43), 17 states have internal predecessors, (43), 8 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (26), 7 states have call predecessors, (26), 8 states have call successors, (26) [2022-11-22 00:35:46,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:35:46,167 INFO L93 Difference]: Finished difference Result 292 states and 385 transitions. [2022-11-22 00:35:46,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-22 00:35:46,167 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.6875) internal successors, (43), 17 states have internal predecessors, (43), 8 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (26), 7 states have call predecessors, (26), 8 states have call successors, (26) Word has length 81 [2022-11-22 00:35:46,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:35:46,169 INFO L225 Difference]: With dead ends: 292 [2022-11-22 00:35:46,169 INFO L226 Difference]: Without dead ends: 190 [2022-11-22 00:35:46,170 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 191 SyntacticMatches, 19 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 898 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=279, Invalid=1701, Unknown=0, NotChecked=0, Total=1980 [2022-11-22 00:35:46,171 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 65 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 353 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-22 00:35:46,171 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 202 Invalid, 417 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 353 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-22 00:35:46,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2022-11-22 00:35:46,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 190. [2022-11-22 00:35:46,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 117 states have (on average 1.1538461538461537) internal successors, (135), 118 states have internal predecessors, (135), 61 states have call successors, (61), 11 states have call predecessors, (61), 11 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2022-11-22 00:35:46,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 256 transitions. [2022-11-22 00:35:46,390 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 256 transitions. Word has length 81 [2022-11-22 00:35:46,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:35:46,390 INFO L495 AbstractCegarLoop]: Abstraction has 190 states and 256 transitions. [2022-11-22 00:35:46,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.6875) internal successors, (43), 17 states have internal predecessors, (43), 8 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (26), 7 states have call predecessors, (26), 8 states have call successors, (26) [2022-11-22 00:35:46,391 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 256 transitions. [2022-11-22 00:35:46,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-11-22 00:35:46,392 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:35:46,392 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:35:46,398 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fad2086d-8d4b-46b7-a361-ff27000d5422/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-22 00:35:46,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fad2086d-8d4b-46b7-a361-ff27000d5422/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:35:46,598 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 00:35:46,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:35:46,598 INFO L85 PathProgramCache]: Analyzing trace with hash 2060029497, now seen corresponding path program 4 times [2022-11-22 00:35:46,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:35:46,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759373798] [2022-11-22 00:35:46,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:35:46,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:35:46,625 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-22 00:35:46,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [211692121] [2022-11-22 00:35:46,625 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-22 00:35:46,625 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:35:46,626 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fad2086d-8d4b-46b7-a361-ff27000d5422/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:35:46,626 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fad2086d-8d4b-46b7-a361-ff27000d5422/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 00:35:46,653 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fad2086d-8d4b-46b7-a361-ff27000d5422/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-22 00:35:46,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:35:46,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-22 00:35:46,710 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 00:35:46,927 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 99 proven. 17 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2022-11-22 00:35:46,927 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 00:35:47,185 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 37 proven. 19 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2022-11-22 00:35:47,185 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:35:47,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759373798] [2022-11-22 00:35:47,185 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-22 00:35:47,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [211692121] [2022-11-22 00:35:47,185 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [211692121] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 00:35:47,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [27577393] [2022-11-22 00:35:47,188 INFO L159 IcfgInterpreter]: Started Sifa with 27 locations of interest [2022-11-22 00:35:47,188 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 00:35:47,189 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 00:35:47,189 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 00:35:47,189 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 00:35:53,121 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 39 for LOIs [2022-11-22 00:35:53,161 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 58 for LOIs [2022-11-22 00:35:53,173 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 00:35:55,858 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '11120#(and (<= |#NULL.offset| 0) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= __VERIFIER_assert_~cond 0) (<= 0 |#NULL.offset|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-22 00:35:55,858 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 00:35:55,858 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-22 00:35:55,858 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 19 [2022-11-22 00:35:55,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58533510] [2022-11-22 00:35:55,859 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-22 00:35:55,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-22 00:35:55,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:35:55,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-22 00:35:55,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=1055, Unknown=0, NotChecked=0, Total=1190 [2022-11-22 00:35:55,860 INFO L87 Difference]: Start difference. First operand 190 states and 256 transitions. Second operand has 19 states, 18 states have (on average 2.888888888888889) internal successors, (52), 17 states have internal predecessors, (52), 8 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (27), 8 states have call predecessors, (27), 8 states have call successors, (27) [2022-11-22 00:35:57,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:35:57,198 INFO L93 Difference]: Finished difference Result 329 states and 452 transitions. [2022-11-22 00:35:57,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-22 00:35:57,201 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.888888888888889) internal successors, (52), 17 states have internal predecessors, (52), 8 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (27), 8 states have call predecessors, (27), 8 states have call successors, (27) Word has length 91 [2022-11-22 00:35:57,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:35:57,202 INFO L225 Difference]: With dead ends: 329 [2022-11-22 00:35:57,202 INFO L226 Difference]: Without dead ends: 204 [2022-11-22 00:35:57,204 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 216 SyntacticMatches, 22 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1253 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=426, Invalid=2226, Unknown=0, NotChecked=0, Total=2652 [2022-11-22 00:35:57,204 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 155 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 481 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 615 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 481 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-22 00:35:57,205 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [155 Valid, 233 Invalid, 615 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 481 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-22 00:35:57,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2022-11-22 00:35:57,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 194. [2022-11-22 00:35:57,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 117 states have (on average 1.1538461538461537) internal successors, (135), 118 states have internal predecessors, (135), 65 states have call successors, (65), 11 states have call predecessors, (65), 11 states have return successors, (64), 64 states have call predecessors, (64), 64 states have call successors, (64) [2022-11-22 00:35:57,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 264 transitions. [2022-11-22 00:35:57,415 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 264 transitions. Word has length 91 [2022-11-22 00:35:57,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:35:57,415 INFO L495 AbstractCegarLoop]: Abstraction has 194 states and 264 transitions. [2022-11-22 00:35:57,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.888888888888889) internal successors, (52), 17 states have internal predecessors, (52), 8 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (27), 8 states have call predecessors, (27), 8 states have call successors, (27) [2022-11-22 00:35:57,415 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 264 transitions. [2022-11-22 00:35:57,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-11-22 00:35:57,416 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:35:57,417 INFO L195 NwaCegarLoop]: trace histogram [15, 14, 14, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:35:57,426 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fad2086d-8d4b-46b7-a361-ff27000d5422/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-22 00:35:57,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fad2086d-8d4b-46b7-a361-ff27000d5422/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-22 00:35:57,622 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 00:35:57,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:35:57,623 INFO L85 PathProgramCache]: Analyzing trace with hash -327458570, now seen corresponding path program 5 times [2022-11-22 00:35:57,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:35:57,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633230754] [2022-11-22 00:35:57,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:35:57,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:35:57,633 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-22 00:35:57,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1035846820] [2022-11-22 00:35:57,633 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-22 00:35:57,634 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:35:57,634 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fad2086d-8d4b-46b7-a361-ff27000d5422/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:35:57,635 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fad2086d-8d4b-46b7-a361-ff27000d5422/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 00:35:57,646 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fad2086d-8d4b-46b7-a361-ff27000d5422/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-22 00:35:57,709 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-22 00:35:57,709 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 00:35:57,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 37 conjunts are in the unsatisfiable core [2022-11-22 00:35:57,712 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 00:35:58,488 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 62 proven. 30 refuted. 0 times theorem prover too weak. 350 trivial. 0 not checked. [2022-11-22 00:35:58,488 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 00:35:58,726 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:35:58,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633230754] [2022-11-22 00:35:58,727 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-22 00:35:58,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1035846820] [2022-11-22 00:35:58,727 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1035846820] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 00:35:58,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2100377699] [2022-11-22 00:35:58,729 INFO L159 IcfgInterpreter]: Started Sifa with 27 locations of interest [2022-11-22 00:35:58,729 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 00:35:58,729 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 00:35:58,729 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 00:35:58,729 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 00:36:04,496 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 8 for LOIs [2022-11-22 00:36:04,505 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 58 for LOIs [2022-11-22 00:36:04,517 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 00:36:08,630 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '12390#(and (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-22 00:36:08,630 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 00:36:08,630 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-22 00:36:08,630 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2022-11-22 00:36:08,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946208846] [2022-11-22 00:36:08,630 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-22 00:36:08,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-22 00:36:08,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:36:08,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-22 00:36:08,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=1249, Unknown=0, NotChecked=0, Total=1406 [2022-11-22 00:36:08,632 INFO L87 Difference]: Start difference. First operand 194 states and 264 transitions. Second operand has 16 states, 15 states have (on average 2.0) internal successors, (30), 14 states have internal predecessors, (30), 4 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) [2022-11-22 00:36:09,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:36:09,964 INFO L93 Difference]: Finished difference Result 275 states and 378 transitions. [2022-11-22 00:36:09,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-22 00:36:09,965 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.0) internal successors, (30), 14 states have internal predecessors, (30), 4 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) Word has length 108 [2022-11-22 00:36:09,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:36:09,966 INFO L225 Difference]: With dead ends: 275 [2022-11-22 00:36:09,966 INFO L226 Difference]: Without dead ends: 273 [2022-11-22 00:36:09,967 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 182 SyntacticMatches, 17 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1063 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=256, Invalid=2194, Unknown=0, NotChecked=0, Total=2450 [2022-11-22 00:36:09,968 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 104 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 740 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 794 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 740 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-22 00:36:09,968 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 199 Invalid, 794 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 740 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-22 00:36:09,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2022-11-22 00:36:10,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 225. [2022-11-22 00:36:10,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 136 states have (on average 1.1470588235294117) internal successors, (156), 137 states have internal predecessors, (156), 73 states have call successors, (73), 15 states have call predecessors, (73), 15 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72) [2022-11-22 00:36:10,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 301 transitions. [2022-11-22 00:36:10,244 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 301 transitions. Word has length 108 [2022-11-22 00:36:10,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:36:10,245 INFO L495 AbstractCegarLoop]: Abstraction has 225 states and 301 transitions. [2022-11-22 00:36:10,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.0) internal successors, (30), 14 states have internal predecessors, (30), 4 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) [2022-11-22 00:36:10,245 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 301 transitions. [2022-11-22 00:36:10,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-11-22 00:36:10,246 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:36:10,246 INFO L195 NwaCegarLoop]: trace histogram [17, 16, 16, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:36:10,251 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fad2086d-8d4b-46b7-a361-ff27000d5422/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-11-22 00:36:10,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fad2086d-8d4b-46b7-a361-ff27000d5422/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-22 00:36:10,447 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 00:36:10,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:36:10,447 INFO L85 PathProgramCache]: Analyzing trace with hash -1702861936, now seen corresponding path program 2 times [2022-11-22 00:36:10,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:36:10,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748664821] [2022-11-22 00:36:10,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:36:10,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:36:10,458 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-22 00:36:10,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1228678524] [2022-11-22 00:36:10,458 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-22 00:36:10,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:36:10,459 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fad2086d-8d4b-46b7-a361-ff27000d5422/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:36:10,466 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fad2086d-8d4b-46b7-a361-ff27000d5422/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 00:36:10,468 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fad2086d-8d4b-46b7-a361-ff27000d5422/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-22 00:36:10,534 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-22 00:36:10,534 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 00:36:10,535 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-22 00:36:10,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 00:36:10,673 INFO L134 CoverageAnalysis]: Checked inductivity of 580 backedges. 60 proven. 13 refuted. 0 times theorem prover too weak. 507 trivial. 0 not checked. [2022-11-22 00:36:10,673 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 00:36:10,868 INFO L134 CoverageAnalysis]: Checked inductivity of 580 backedges. 60 proven. 13 refuted. 0 times theorem prover too weak. 507 trivial. 0 not checked. [2022-11-22 00:36:10,868 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:36:10,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748664821] [2022-11-22 00:36:10,869 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-22 00:36:10,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1228678524] [2022-11-22 00:36:10,869 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1228678524] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 00:36:10,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2105293872] [2022-11-22 00:36:10,871 INFO L159 IcfgInterpreter]: Started Sifa with 28 locations of interest [2022-11-22 00:36:10,871 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 00:36:10,871 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 00:36:10,871 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 00:36:10,872 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 00:36:16,858 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 8 for LOIs [2022-11-22 00:36:16,861 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 58 for LOIs [2022-11-22 00:36:16,874 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 00:36:18,864 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '13969#(and (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-22 00:36:18,864 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 00:36:18,864 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-22 00:36:18,864 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 15 [2022-11-22 00:36:18,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938289136] [2022-11-22 00:36:18,865 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-22 00:36:18,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-22 00:36:18,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:36:18,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-22 00:36:18,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=871, Unknown=0, NotChecked=0, Total=992 [2022-11-22 00:36:18,866 INFO L87 Difference]: Start difference. First operand 225 states and 301 transitions. Second operand has 15 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 13 states have internal predecessors, (39), 6 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) [2022-11-22 00:36:19,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:36:19,848 INFO L93 Difference]: Finished difference Result 261 states and 353 transitions. [2022-11-22 00:36:19,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-22 00:36:19,849 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 13 states have internal predecessors, (39), 6 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) Word has length 125 [2022-11-22 00:36:19,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:36:19,851 INFO L225 Difference]: With dead ends: 261 [2022-11-22 00:36:19,851 INFO L226 Difference]: Without dead ends: 248 [2022-11-22 00:36:19,852 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 389 GetRequests, 325 SyntacticMatches, 18 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 784 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=362, Invalid=1894, Unknown=0, NotChecked=0, Total=2256 [2022-11-22 00:36:19,853 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 58 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 446 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 516 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 446 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-22 00:36:19,853 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 233 Invalid, 516 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 446 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-22 00:36:19,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2022-11-22 00:36:20,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 195. [2022-11-22 00:36:20,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 115 states have (on average 1.1217391304347826) internal successors, (129), 115 states have internal predecessors, (129), 64 states have call successors, (64), 15 states have call predecessors, (64), 15 states have return successors, (64), 64 states have call predecessors, (64), 64 states have call successors, (64) [2022-11-22 00:36:20,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 257 transitions. [2022-11-22 00:36:20,136 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 257 transitions. Word has length 125 [2022-11-22 00:36:20,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:36:20,136 INFO L495 AbstractCegarLoop]: Abstraction has 195 states and 257 transitions. [2022-11-22 00:36:20,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 13 states have internal predecessors, (39), 6 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) [2022-11-22 00:36:20,137 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 257 transitions. [2022-11-22 00:36:20,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-11-22 00:36:20,138 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:36:20,138 INFO L195 NwaCegarLoop]: trace histogram [17, 16, 16, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:36:20,153 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fad2086d-8d4b-46b7-a361-ff27000d5422/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-11-22 00:36:20,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fad2086d-8d4b-46b7-a361-ff27000d5422/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-22 00:36:20,353 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 00:36:20,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:36:20,354 INFO L85 PathProgramCache]: Analyzing trace with hash -2018576436, now seen corresponding path program 6 times [2022-11-22 00:36:20,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:36:20,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529920251] [2022-11-22 00:36:20,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:36:20,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:36:20,364 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-22 00:36:20,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [265940084] [2022-11-22 00:36:20,364 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-22 00:36:20,364 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:36:20,364 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fad2086d-8d4b-46b7-a361-ff27000d5422/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:36:20,365 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fad2086d-8d4b-46b7-a361-ff27000d5422/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 00:36:20,367 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fad2086d-8d4b-46b7-a361-ff27000d5422/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-11-22 00:36:20,439 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-22 00:36:20,439 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 00:36:20,441 INFO L263 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-22 00:36:20,442 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 00:36:20,625 INFO L134 CoverageAnalysis]: Checked inductivity of 596 backedges. 59 proven. 46 refuted. 0 times theorem prover too weak. 491 trivial. 0 not checked. [2022-11-22 00:36:20,625 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 00:36:20,930 INFO L134 CoverageAnalysis]: Checked inductivity of 596 backedges. 59 proven. 46 refuted. 0 times theorem prover too weak. 491 trivial. 0 not checked. [2022-11-22 00:36:20,930 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:36:20,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529920251] [2022-11-22 00:36:20,930 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-22 00:36:20,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [265940084] [2022-11-22 00:36:20,930 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [265940084] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 00:36:20,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [31422083] [2022-11-22 00:36:20,932 INFO L159 IcfgInterpreter]: Started Sifa with 27 locations of interest [2022-11-22 00:36:20,932 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 00:36:20,932 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 00:36:20,933 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 00:36:20,933 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 00:36:26,631 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 39 for LOIs [2022-11-22 00:36:26,673 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 58 for LOIs [2022-11-22 00:36:26,684 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 00:36:30,046 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '15509#(and (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-22 00:36:30,046 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 00:36:30,046 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-22 00:36:30,046 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2022-11-22 00:36:30,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70186347] [2022-11-22 00:36:30,047 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-22 00:36:30,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-22 00:36:30,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:36:30,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-22 00:36:30,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=1195, Unknown=0, NotChecked=0, Total=1332 [2022-11-22 00:36:30,049 INFO L87 Difference]: Start difference. First operand 195 states and 257 transitions. Second operand has 21 states, 20 states have (on average 3.0) internal successors, (60), 19 states have internal predecessors, (60), 12 states have call successors, (39), 2 states have call predecessors, (39), 2 states have return successors, (39), 11 states have call predecessors, (39), 11 states have call successors, (39) [2022-11-22 00:36:31,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:36:31,617 INFO L93 Difference]: Finished difference Result 350 states and 492 transitions. [2022-11-22 00:36:31,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-22 00:36:31,618 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 3.0) internal successors, (60), 19 states have internal predecessors, (60), 12 states have call successors, (39), 2 states have call predecessors, (39), 2 states have return successors, (39), 11 states have call predecessors, (39), 11 states have call successors, (39) Word has length 128 [2022-11-22 00:36:31,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:36:31,620 INFO L225 Difference]: With dead ends: 350 [2022-11-22 00:36:31,620 INFO L226 Difference]: Without dead ends: 245 [2022-11-22 00:36:31,621 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 400 GetRequests, 316 SyntacticMatches, 31 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1607 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=433, Invalid=2537, Unknown=0, NotChecked=0, Total=2970 [2022-11-22 00:36:31,622 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 169 mSDsluCounter, 260 mSDsCounter, 0 mSdLazyCounter, 764 mSolverCounterSat, 223 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 333 SdHoareTripleChecker+Invalid, 987 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 223 IncrementalHoareTripleChecker+Valid, 764 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-22 00:36:31,622 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 333 Invalid, 987 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [223 Valid, 764 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-22 00:36:31,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2022-11-22 00:36:31,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 231. [2022-11-22 00:36:31,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 131 states have (on average 1.1145038167938932) internal successors, (146), 131 states have internal predecessors, (146), 84 states have call successors, (84), 15 states have call predecessors, (84), 15 states have return successors, (84), 84 states have call predecessors, (84), 84 states have call successors, (84) [2022-11-22 00:36:31,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 314 transitions. [2022-11-22 00:36:31,884 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 314 transitions. Word has length 128 [2022-11-22 00:36:31,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:36:31,885 INFO L495 AbstractCegarLoop]: Abstraction has 231 states and 314 transitions. [2022-11-22 00:36:31,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 3.0) internal successors, (60), 19 states have internal predecessors, (60), 12 states have call successors, (39), 2 states have call predecessors, (39), 2 states have return successors, (39), 11 states have call predecessors, (39), 11 states have call successors, (39) [2022-11-22 00:36:31,885 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 314 transitions. [2022-11-22 00:36:31,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-11-22 00:36:31,886 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:36:31,886 INFO L195 NwaCegarLoop]: trace histogram [19, 18, 18, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:36:31,891 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fad2086d-8d4b-46b7-a361-ff27000d5422/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-11-22 00:36:32,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fad2086d-8d4b-46b7-a361-ff27000d5422/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-22 00:36:32,087 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 00:36:32,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:36:32,087 INFO L85 PathProgramCache]: Analyzing trace with hash -450323068, now seen corresponding path program 7 times [2022-11-22 00:36:32,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:36:32,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931234745] [2022-11-22 00:36:32,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:36:32,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:36:32,097 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-22 00:36:32,098 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1902781080] [2022-11-22 00:36:32,098 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-22 00:36:32,098 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:36:32,098 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fad2086d-8d4b-46b7-a361-ff27000d5422/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:36:32,099 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fad2086d-8d4b-46b7-a361-ff27000d5422/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 00:36:32,103 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fad2086d-8d4b-46b7-a361-ff27000d5422/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-11-22 00:36:32,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:36:32,183 INFO L263 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-22 00:36:32,185 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 00:36:32,244 INFO L134 CoverageAnalysis]: Checked inductivity of 727 backedges. 353 proven. 18 refuted. 0 times theorem prover too weak. 356 trivial. 0 not checked. [2022-11-22 00:36:32,244 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 00:36:32,353 INFO L134 CoverageAnalysis]: Checked inductivity of 727 backedges. 77 proven. 18 refuted. 0 times theorem prover too weak. 632 trivial. 0 not checked. [2022-11-22 00:36:32,353 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:36:32,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931234745] [2022-11-22 00:36:32,353 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-22 00:36:32,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1902781080] [2022-11-22 00:36:32,353 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1902781080] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 00:36:32,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2125520945] [2022-11-22 00:36:32,355 INFO L159 IcfgInterpreter]: Started Sifa with 27 locations of interest [2022-11-22 00:36:32,355 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 00:36:32,355 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 00:36:32,355 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 00:36:32,355 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 00:36:38,073 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 39 for LOIs [2022-11-22 00:36:38,114 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 58 for LOIs [2022-11-22 00:36:38,125 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 00:36:40,264 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '17285#(and (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-22 00:36:40,264 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 00:36:40,264 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-22 00:36:40,264 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2022-11-22 00:36:40,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523865666] [2022-11-22 00:36:40,264 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-22 00:36:40,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-22 00:36:40,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:36:40,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-22 00:36:40,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=466, Unknown=0, NotChecked=0, Total=552 [2022-11-22 00:36:40,266 INFO L87 Difference]: Start difference. First operand 231 states and 314 transitions. Second operand has 8 states, 8 states have (on average 4.25) internal successors, (34), 8 states have internal predecessors, (34), 5 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (24), 5 states have call predecessors, (24), 5 states have call successors, (24) [2022-11-22 00:36:40,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:36:40,761 INFO L93 Difference]: Finished difference Result 400 states and 565 transitions. [2022-11-22 00:36:40,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-22 00:36:40,761 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.25) internal successors, (34), 8 states have internal predecessors, (34), 5 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (24), 5 states have call predecessors, (24), 5 states have call successors, (24) Word has length 133 [2022-11-22 00:36:40,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:36:40,763 INFO L225 Difference]: With dead ends: 400 [2022-11-22 00:36:40,763 INFO L226 Difference]: Without dead ends: 252 [2022-11-22 00:36:40,764 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 403 GetRequests, 342 SyntacticMatches, 35 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 726 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=112, Invalid=644, Unknown=0, NotChecked=0, Total=756 [2022-11-22 00:36:40,765 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 18 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 00:36:40,765 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 185 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 00:36:40,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2022-11-22 00:36:41,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 231. [2022-11-22 00:36:41,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 127 states have (on average 1.1338582677165354) internal successors, (144), 129 states have internal predecessors, (144), 89 states have call successors, (89), 14 states have call predecessors, (89), 14 states have return successors, (88), 87 states have call predecessors, (88), 88 states have call successors, (88) [2022-11-22 00:36:41,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 321 transitions. [2022-11-22 00:36:41,023 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 321 transitions. Word has length 133 [2022-11-22 00:36:41,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:36:41,023 INFO L495 AbstractCegarLoop]: Abstraction has 231 states and 321 transitions. [2022-11-22 00:36:41,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.25) internal successors, (34), 8 states have internal predecessors, (34), 5 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (24), 5 states have call predecessors, (24), 5 states have call successors, (24) [2022-11-22 00:36:41,023 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 321 transitions. [2022-11-22 00:36:41,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-11-22 00:36:41,024 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:36:41,024 INFO L195 NwaCegarLoop]: trace histogram [25, 24, 24, 7, 7, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:36:41,028 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fad2086d-8d4b-46b7-a361-ff27000d5422/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-11-22 00:36:41,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fad2086d-8d4b-46b7-a361-ff27000d5422/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:36:41,225 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 00:36:41,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:36:41,225 INFO L85 PathProgramCache]: Analyzing trace with hash 1847400172, now seen corresponding path program 8 times [2022-11-22 00:36:41,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:36:41,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045056584] [2022-11-22 00:36:41,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:36:41,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:36:41,234 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-22 00:36:41,234 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1810992967] [2022-11-22 00:36:41,234 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-22 00:36:41,234 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:36:41,235 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fad2086d-8d4b-46b7-a361-ff27000d5422/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:36:41,236 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fad2086d-8d4b-46b7-a361-ff27000d5422/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 00:36:41,239 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fad2086d-8d4b-46b7-a361-ff27000d5422/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-11-22 00:36:41,307 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-22 00:36:41,307 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 00:36:41,309 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 42 conjunts are in the unsatisfiable core [2022-11-22 00:36:41,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 00:36:42,367 INFO L134 CoverageAnalysis]: Checked inductivity of 1294 backedges. 48 proven. 36 refuted. 0 times theorem prover too weak. 1210 trivial. 0 not checked. [2022-11-22 00:36:42,367 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 00:36:42,790 INFO L134 CoverageAnalysis]: Checked inductivity of 1294 backedges. 50 proven. 31 refuted. 0 times theorem prover too weak. 1213 trivial. 0 not checked. [2022-11-22 00:36:42,790 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:36:42,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045056584] [2022-11-22 00:36:42,790 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-22 00:36:42,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1810992967] [2022-11-22 00:36:42,791 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1810992967] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 00:36:42,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1635870404] [2022-11-22 00:36:42,792 INFO L159 IcfgInterpreter]: Started Sifa with 27 locations of interest [2022-11-22 00:36:42,792 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 00:36:42,792 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 00:36:42,793 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 00:36:42,793 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 00:36:48,613 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 39 for LOIs [2022-11-22 00:36:48,655 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 58 for LOIs [2022-11-22 00:36:48,668 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 00:36:55,718 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '19370#(and (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-22 00:36:55,718 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 00:36:55,718 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-22 00:36:55,719 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 20 [2022-11-22 00:36:55,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622094591] [2022-11-22 00:36:55,719 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-22 00:36:55,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-22 00:36:55,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:36:55,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-22 00:36:55,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=1121, Unknown=0, NotChecked=0, Total=1260 [2022-11-22 00:36:55,720 INFO L87 Difference]: Start difference. First operand 231 states and 321 transitions. Second operand has 20 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 18 states have internal predecessors, (55), 6 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2022-11-22 00:36:58,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:36:58,265 INFO L93 Difference]: Finished difference Result 335 states and 475 transitions. [2022-11-22 00:36:58,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-22 00:36:58,265 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 18 states have internal predecessors, (55), 6 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) Word has length 172 [2022-11-22 00:36:58,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:36:58,268 INFO L225 Difference]: With dead ends: 335 [2022-11-22 00:36:58,268 INFO L226 Difference]: Without dead ends: 333 [2022-11-22 00:36:58,269 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 525 GetRequests, 437 SyntacticMatches, 43 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1913 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=252, Invalid=1910, Unknown=0, NotChecked=0, Total=2162 [2022-11-22 00:36:58,270 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 126 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 525 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 251 SdHoareTripleChecker+Invalid, 610 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 525 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-22 00:36:58,270 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 251 Invalid, 610 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 525 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-22 00:36:58,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2022-11-22 00:36:58,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 248. [2022-11-22 00:36:58,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 140 states have (on average 1.1214285714285714) internal successors, (157), 142 states have internal predecessors, (157), 92 states have call successors, (92), 15 states have call predecessors, (92), 15 states have return successors, (91), 90 states have call predecessors, (91), 91 states have call successors, (91) [2022-11-22 00:36:58,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 340 transitions. [2022-11-22 00:36:58,699 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 340 transitions. Word has length 172 [2022-11-22 00:36:58,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:36:58,700 INFO L495 AbstractCegarLoop]: Abstraction has 248 states and 340 transitions. [2022-11-22 00:36:58,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 18 states have internal predecessors, (55), 6 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2022-11-22 00:36:58,701 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 340 transitions. [2022-11-22 00:36:58,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-11-22 00:36:58,702 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:36:58,702 INFO L195 NwaCegarLoop]: trace histogram [27, 26, 26, 7, 7, 7, 7, 7, 7, 6, 6, 6, 4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:36:58,712 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fad2086d-8d4b-46b7-a361-ff27000d5422/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-11-22 00:36:58,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fad2086d-8d4b-46b7-a361-ff27000d5422/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:36:58,907 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 00:36:58,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:36:58,908 INFO L85 PathProgramCache]: Analyzing trace with hash -1606063294, now seen corresponding path program 9 times [2022-11-22 00:36:58,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:36:58,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418800701] [2022-11-22 00:36:58,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:36:58,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:36:58,930 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-22 00:36:58,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [857182240] [2022-11-22 00:36:58,934 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-22 00:36:58,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:36:58,934 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fad2086d-8d4b-46b7-a361-ff27000d5422/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:36:58,935 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fad2086d-8d4b-46b7-a361-ff27000d5422/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 00:36:58,965 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fad2086d-8d4b-46b7-a361-ff27000d5422/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-11-22 00:36:59,036 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-22 00:36:59,036 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 00:36:59,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 372 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-22 00:36:59,042 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 00:36:59,385 INFO L134 CoverageAnalysis]: Checked inductivity of 1493 backedges. 267 proven. 105 refuted. 0 times theorem prover too weak. 1121 trivial. 0 not checked. [2022-11-22 00:36:59,385 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 00:36:59,860 INFO L134 CoverageAnalysis]: Checked inductivity of 1493 backedges. 80 proven. 104 refuted. 0 times theorem prover too weak. 1309 trivial. 0 not checked. [2022-11-22 00:36:59,861 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:36:59,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418800701] [2022-11-22 00:36:59,861 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-22 00:36:59,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [857182240] [2022-11-22 00:36:59,861 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [857182240] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 00:36:59,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [888053060] [2022-11-22 00:36:59,862 INFO L159 IcfgInterpreter]: Started Sifa with 27 locations of interest [2022-11-22 00:36:59,862 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 00:36:59,863 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 00:36:59,863 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 00:36:59,863 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 00:37:05,713 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 39 for LOIs [2022-11-22 00:37:05,753 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 58 for LOIs [2022-11-22 00:37:05,765 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 00:37:09,440 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '21431#(and (<= |#NULL.offset| 0) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= __VERIFIER_assert_~cond 0) (<= 0 |#NULL.offset|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-22 00:37:09,440 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 00:37:09,440 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-22 00:37:09,440 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 29 [2022-11-22 00:37:09,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416168729] [2022-11-22 00:37:09,440 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-22 00:37:09,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-22 00:37:09,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:37:09,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-22 00:37:09,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=196, Invalid=1784, Unknown=0, NotChecked=0, Total=1980 [2022-11-22 00:37:09,442 INFO L87 Difference]: Start difference. First operand 248 states and 340 transitions. Second operand has 29 states, 28 states have (on average 2.4642857142857144) internal successors, (69), 27 states have internal predecessors, (69), 16 states have call successors, (59), 2 states have call predecessors, (59), 3 states have return successors, (59), 16 states have call predecessors, (59), 16 states have call successors, (59) [2022-11-22 00:37:10,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:37:10,551 INFO L93 Difference]: Finished difference Result 257 states and 354 transitions. [2022-11-22 00:37:10,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-22 00:37:10,552 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 2.4642857142857144) internal successors, (69), 27 states have internal predecessors, (69), 16 states have call successors, (59), 2 states have call predecessors, (59), 3 states have return successors, (59), 16 states have call predecessors, (59), 16 states have call successors, (59) Word has length 177 [2022-11-22 00:37:10,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:37:10,552 INFO L225 Difference]: With dead ends: 257 [2022-11-22 00:37:10,552 INFO L226 Difference]: Without dead ends: 0 [2022-11-22 00:37:10,554 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 541 GetRequests, 440 SyntacticMatches, 46 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2648 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=418, Invalid=2774, Unknown=0, NotChecked=0, Total=3192 [2022-11-22 00:37:10,554 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 123 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 629 mSolverCounterSat, 160 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 281 SdHoareTripleChecker+Invalid, 789 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 160 IncrementalHoareTripleChecker+Valid, 629 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-22 00:37:10,555 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 281 Invalid, 789 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [160 Valid, 629 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-22 00:37:10,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-22 00:37:10,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-22 00:37:10,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:37:10,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-22 00:37:10,556 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 177 [2022-11-22 00:37:10,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:37:10,556 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-22 00:37:10,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 2.4642857142857144) internal successors, (69), 27 states have internal predecessors, (69), 16 states have call successors, (59), 2 states have call predecessors, (59), 3 states have return successors, (59), 16 states have call predecessors, (59), 16 states have call successors, (59) [2022-11-22 00:37:10,557 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-22 00:37:10,557 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-22 00:37:10,559 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-22 00:37:10,571 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fad2086d-8d4b-46b7-a361-ff27000d5422/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-11-22 00:37:10,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fad2086d-8d4b-46b7-a361-ff27000d5422/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2022-11-22 00:37:10,767 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-22 00:37:45,209 WARN L233 SmtUtils]: Spent 6.65s on a formula simplification. DAG size of input: 290 DAG size of output: 129 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2022-11-22 00:38:13,458 WARN L233 SmtUtils]: Spent 28.24s on a formula simplification. DAG size of input: 255 DAG size of output: 116 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2022-11-22 00:38:17,815 INFO L895 garLoopResultBuilder]: At program point L35-2(lines 35 73) the Hoare annotation is: (let ((.cse20 (select |#memory_int| 1))) (let ((.cse3 (<= 1 |ULTIMATE.start_main_~y~0#1|)) (.cse2 (<= |ULTIMATE.start_main_~y~0#1| 2)) (.cse7 (<= 1 |ULTIMATE.start_main_~x~0#1|)) (.cse1 (+ (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|))) (.cse0 (= (select |#length| 3) 12)) (.cse17 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse4 (= 11 (select |#length| 2))) (.cse5 (= 2 (select |#length| 1))) (.cse6 (= (select |#valid| 3) 1)) (.cse8 (= (select |#valid| 1) 1)) (.cse19 (= |ULTIMATE.start_main_~r~0#1| 1)) (.cse9 (= (select |#valid| 0) 0)) (.cse10 (= (select |#valid| 2) 1)) (.cse11 (= |#NULL.offset| 0)) (.cse12 (= (select .cse20 0) 48)) (.cse13 (<= |ULTIMATE.start_main_~x~0#1| 2)) (.cse14 (= (select .cse20 1) 0)) (.cse15 (< 0 |#StackHeapBarrier|)) (.cse16 (= |#NULL.base| 0))) (or (and (<= 0 |ULTIMATE.start_main_~b~0#1|) .cse0 (= .cse1 (+ |ULTIMATE.start_main_~a~0#1| (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|))) .cse2 .cse3 (<= |ULTIMATE.start_main_~a~0#1| 2) (<= (+ |ULTIMATE.start_main_~b~0#1| 1) |ULTIMATE.start_main_~a~0#1|) .cse4 .cse5 .cse6 (<= (* 3 |ULTIMATE.start_main_~c~0#1|) 0) .cse7 (<= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~c~0#1|) .cse8 .cse9 .cse10 .cse11 .cse12 .cse13 .cse14 .cse15 .cse16) (and (let ((.cse18 (not (= (ite (and .cse2 (<= 0 |ULTIMATE.start_main_~y~0#1|)) 1 0) 0)))) (or (and .cse0 (= |ULTIMATE.start_main_~temp~0#1| 0) (= (+ |ULTIMATE.start_main_~q~0#1| (* |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~p~0#1|)) 1) (= |ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~x~0#1|) .cse17 .cse18 .cse4 .cse5 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~c~0#1|) .cse6 (= |ULTIMATE.start_main_~k~0#1| 0) .cse19 (not (<= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~c~0#1|)) (= (+ |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~s~0#1|) |ULTIMATE.start_main_~temp~0#1|)) (and .cse0 (not (= (ite .cse3 1 0) 0)) .cse18 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|) .cse4 .cse5 .cse6 (= |ULTIMATE.start_main_~r~0#1| 0) (= |ULTIMATE.start_main_~q~0#1| 0) (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|) (= |ULTIMATE.start_main_~s~0#1| 1)))) .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 (= .cse1 |ULTIMATE.start_main_~a~0#1|) .cse13 .cse14 .cse15 .cse16) (and (= (+ |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~x~0#1|) .cse0 (= |ULTIMATE.start_main_~p~0#1| 0) .cse17 .cse4 .cse5 .cse6 (<= |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~x~0#1|) (= (+ |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~s~0#1|) 0) (= |ULTIMATE.start_main_~q~0#1| 1) .cse8 .cse19 (not (<= (* 2 |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~x~0#1|)) (or (<= (* 2 |ULTIMATE.start_main_~v~0#1|) |ULTIMATE.start_main_~c~0#1|) (not (= |ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~v~0#1|))) .cse9 .cse10 .cse11 .cse12 .cse13 .cse14 .cse15 .cse16)))) [2022-11-22 00:38:17,816 INFO L895 garLoopResultBuilder]: At program point L35-3(lines 35 73) the Hoare annotation is: (let ((.cse3 (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse4 (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|))) (let ((.cse0 (+ .cse3 .cse4)) (.cse1 (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse2 (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse5 (select |#memory_int| 1))) (and (= (select |#length| 3) 12) (= .cse0 (+ |ULTIMATE.start_main_~a~0#1| .cse1 .cse2)) (or (= |ULTIMATE.start_main_~b~0#1| 0) (< |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|) (= .cse0 |ULTIMATE.start_main_~a~0#1|)) (or (= (+ .cse3 |ULTIMATE.start_main_~b~0#1| .cse4) (+ (* |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|) (* |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|) (* 2 .cse2) (* 2 .cse1))) (not (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~c~0#1|)) (<= |ULTIMATE.start_main_~c~0#1| 0) (not (= (+ .cse1 .cse2) |ULTIMATE.start_main_~b~0#1|))) (<= 1 |ULTIMATE.start_main_~y~0#1|) (not (= (ite (and (<= |ULTIMATE.start_main_~y~0#1| 2) (<= 0 |ULTIMATE.start_main_~y~0#1|)) 1 0) 0)) (= 11 (select |#length| 2)) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (<= 1 |ULTIMATE.start_main_~x~0#1|) (= (select |#valid| 1) 1) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= (select .cse5 0) 48) (<= |ULTIMATE.start_main_~x~0#1| 2) (= (select .cse5 1) 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0)))) [2022-11-22 00:38:17,816 INFO L895 garLoopResultBuilder]: At program point L52(line 52) the Hoare annotation is: (let ((.cse25 (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse26 (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|))) (let ((.cse30 (select |#memory_int| 1)) (.cse17 (+ .cse25 |ULTIMATE.start_main_~b~0#1| .cse26)) (.cse18 (* |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse21 (* |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse19 (* |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse22 (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse23 (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse20 (* |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse4 (= (select |#length| 3) 12)) (.cse8 (= 11 (select |#length| 2))) (.cse9 (= 2 (select |#length| 1))) (.cse10 (= (select |#valid| 3) 1)) (.cse2 (= (select |#valid| 1) 1)) (.cse14 (= (select |#valid| 0) 0))) (let ((.cse3 (and .cse4 (= |ULTIMATE.start_main_~temp~0#1| 0) (not (= 0 (ite (<= 1 |ULTIMATE.start_main_~x~0#1|) 1 0))) (= |ULTIMATE.start_main_~p~0#1| 0) (= |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~temp~0#1|) (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|) (not (= (ite (and (<= |ULTIMATE.start_main_~y~0#1| 2) (<= 0 |ULTIMATE.start_main_~y~0#1|)) 1 0) 0)) (< |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|) .cse8 .cse9 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~x~0#1|) .cse10 (= |ULTIMATE.start_main_~q~0#1| 1) .cse2 (= |ULTIMATE.start_main_~r~0#1| 1) .cse14)) (.cse5 (not (= (ite (<= 1 |ULTIMATE.start_main_~y~0#1|) 1 0) 0))) (.cse6 (= |ULTIMATE.start_main_~p~0#1| 1)) (.cse7 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse11 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse12 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse13 (= |ULTIMATE.start_main_~s~0#1| 1)) (.cse0 (or (not (= |ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~v~0#1|)) (= .cse17 (+ .cse18 .cse21 .cse19 .cse22 .cse23 .cse20)))) (.cse1 (= |ULTIMATE.start_main_~k~0#1| 0)) (.cse15 (= (select |#valid| 2) 1)) (.cse16 (= |#NULL.offset| 0)) (.cse24 (= (select .cse30 0) 48)) (.cse27 (= (select .cse30 1) 0)) (.cse28 (< 0 |#StackHeapBarrier|)) (.cse29 (= |#NULL.base| 0))) (or (and (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~c~0#1|) .cse0 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~v~0#1|) .cse1 (<= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~c~0#1|) .cse2 (or .cse3 (and .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13)) .cse14 .cse15 .cse16 (or (= .cse17 (+ .cse18 .cse19 (* 2 .cse20) (* .cse21 2) .cse22 .cse23)) (not (= (* 2 |ULTIMATE.start_main_~v~0#1|) |ULTIMATE.start_main_~c~0#1|))) .cse24 (= (+ .cse25 .cse26) |ULTIMATE.start_main_~a~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2) .cse27 .cse28 .cse29) (and (<= (* (div |ULTIMATE.start_main_~v~0#1| 2) 2) |ULTIMATE.start_main_~c~0#1|) (or .cse3 (and .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 (= |ULTIMATE.start_main_~r~0#1| 0) .cse11 .cse2 .cse14 .cse12 .cse13)) .cse0 .cse1 (<= |ULTIMATE.start_main_~c~0#1| 2) (= (* 2 |ULTIMATE.start_main_~b~0#1|) |ULTIMATE.start_main_~v~0#1|) .cse15 .cse16 .cse24 .cse27 (= 2 |ULTIMATE.start_main_~d~0#1|) .cse28 .cse29))))) [2022-11-22 00:38:17,816 INFO L899 garLoopResultBuilder]: For program point L36(lines 36 37) no Hoare annotation was computed. [2022-11-22 00:38:17,816 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-22 00:38:17,816 INFO L895 garLoopResultBuilder]: At program point L24(line 24) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (and (= (select |#length| 3) 12) (= 11 (select |#length| 2)) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (= (select |#valid| 1) 1) (= (select |#valid| 0) 0) (not (= (ite (and (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2)) 1 0) 0)) (<= 0 (+ |ULTIMATE.start_main_~y~0#1| 2147483648)) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= (select .cse0 0) 48) (<= |ULTIMATE.start_main_~y~0#1| 2147483647) (= (select .cse0 1) 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) [2022-11-22 00:38:17,817 INFO L895 garLoopResultBuilder]: At program point L24-1(line 24) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (and (= (select |#length| 3) 12) (not (= (ite (and (<= |ULTIMATE.start_main_~y~0#1| 2) (<= 0 |ULTIMATE.start_main_~y~0#1|)) 1 0) 0)) (= 11 (select |#length| 2)) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (= (select |#valid| 1) 1) (= (select |#valid| 0) 0) (not (= (ite (and (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2)) 1 0) 0)) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= (select .cse0 0) 48) (= (select .cse0 1) 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) [2022-11-22 00:38:17,817 INFO L899 garLoopResultBuilder]: For program point L53(lines 49 59) no Hoare annotation was computed. [2022-11-22 00:38:17,817 INFO L895 garLoopResultBuilder]: At program point L49-2(lines 49 59) the Hoare annotation is: (let ((.cse25 (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse26 (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|))) (let ((.cse30 (select |#memory_int| 1)) (.cse17 (+ .cse25 |ULTIMATE.start_main_~b~0#1| .cse26)) (.cse18 (* |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse21 (* |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse19 (* |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse22 (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse23 (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse20 (* |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse4 (= (select |#length| 3) 12)) (.cse8 (= 11 (select |#length| 2))) (.cse9 (= 2 (select |#length| 1))) (.cse10 (= (select |#valid| 3) 1)) (.cse2 (= (select |#valid| 1) 1)) (.cse14 (= (select |#valid| 0) 0))) (let ((.cse3 (and .cse4 (= |ULTIMATE.start_main_~temp~0#1| 0) (not (= 0 (ite (<= 1 |ULTIMATE.start_main_~x~0#1|) 1 0))) (= |ULTIMATE.start_main_~p~0#1| 0) (= |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~temp~0#1|) (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|) (not (= (ite (and (<= |ULTIMATE.start_main_~y~0#1| 2) (<= 0 |ULTIMATE.start_main_~y~0#1|)) 1 0) 0)) (< |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|) .cse8 .cse9 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~x~0#1|) .cse10 (= |ULTIMATE.start_main_~q~0#1| 1) .cse2 (= |ULTIMATE.start_main_~r~0#1| 1) .cse14)) (.cse5 (not (= (ite (<= 1 |ULTIMATE.start_main_~y~0#1|) 1 0) 0))) (.cse6 (= |ULTIMATE.start_main_~p~0#1| 1)) (.cse7 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse11 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse12 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse13 (= |ULTIMATE.start_main_~s~0#1| 1)) (.cse0 (or (not (= |ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~v~0#1|)) (= .cse17 (+ .cse18 .cse21 .cse19 .cse22 .cse23 .cse20)))) (.cse1 (= |ULTIMATE.start_main_~k~0#1| 0)) (.cse15 (= (select |#valid| 2) 1)) (.cse16 (= |#NULL.offset| 0)) (.cse24 (= (select .cse30 0) 48)) (.cse27 (= (select .cse30 1) 0)) (.cse28 (< 0 |#StackHeapBarrier|)) (.cse29 (= |#NULL.base| 0))) (or (and (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~c~0#1|) .cse0 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~v~0#1|) .cse1 (<= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~c~0#1|) .cse2 (or .cse3 (and .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13)) .cse14 .cse15 .cse16 (or (= .cse17 (+ .cse18 .cse19 (* 2 .cse20) (* .cse21 2) .cse22 .cse23)) (not (= (* 2 |ULTIMATE.start_main_~v~0#1|) |ULTIMATE.start_main_~c~0#1|))) .cse24 (= (+ .cse25 .cse26) |ULTIMATE.start_main_~a~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2) .cse27 .cse28 .cse29) (and (<= (* (div |ULTIMATE.start_main_~v~0#1| 2) 2) |ULTIMATE.start_main_~c~0#1|) (or .cse3 (and .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 (= |ULTIMATE.start_main_~r~0#1| 0) .cse11 .cse2 .cse14 .cse12 .cse13)) .cse0 .cse1 (<= |ULTIMATE.start_main_~c~0#1| 2) (= (* 2 |ULTIMATE.start_main_~b~0#1|) |ULTIMATE.start_main_~v~0#1|) .cse15 .cse16 .cse24 .cse27 (= 2 |ULTIMATE.start_main_~d~0#1|) .cse28 .cse29))))) [2022-11-22 00:38:17,817 INFO L899 garLoopResultBuilder]: For program point L49-3(lines 49 59) no Hoare annotation was computed. [2022-11-22 00:38:17,817 INFO L902 garLoopResultBuilder]: At program point L74(line 74) the Hoare annotation is: true [2022-11-22 00:38:17,818 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-22 00:38:17,818 INFO L895 garLoopResultBuilder]: At program point L25(line 25) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (and (= (select |#length| 3) 12) (not (= (ite (and (<= |ULTIMATE.start_main_~y~0#1| 2) (<= 0 |ULTIMATE.start_main_~y~0#1|)) 1 0) 0)) (= 11 (select |#length| 2)) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (<= 1 |ULTIMATE.start_main_~x~0#1|) (= (select |#valid| 1) 1) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= (select .cse0 0) 48) (<= |ULTIMATE.start_main_~x~0#1| 2) (= (select .cse0 1) 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) [2022-11-22 00:38:17,818 INFO L895 garLoopResultBuilder]: At program point L50(line 50) the Hoare annotation is: (let ((.cse25 (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse26 (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|))) (let ((.cse30 (select |#memory_int| 1)) (.cse17 (+ .cse25 |ULTIMATE.start_main_~b~0#1| .cse26)) (.cse18 (* |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse21 (* |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse19 (* |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse22 (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse23 (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse20 (* |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse4 (= (select |#length| 3) 12)) (.cse8 (= 11 (select |#length| 2))) (.cse9 (= 2 (select |#length| 1))) (.cse10 (= (select |#valid| 3) 1)) (.cse2 (= (select |#valid| 1) 1)) (.cse14 (= (select |#valid| 0) 0))) (let ((.cse3 (and .cse4 (= |ULTIMATE.start_main_~temp~0#1| 0) (not (= 0 (ite (<= 1 |ULTIMATE.start_main_~x~0#1|) 1 0))) (= |ULTIMATE.start_main_~p~0#1| 0) (= |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~temp~0#1|) (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|) (not (= (ite (and (<= |ULTIMATE.start_main_~y~0#1| 2) (<= 0 |ULTIMATE.start_main_~y~0#1|)) 1 0) 0)) (< |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|) .cse8 .cse9 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~x~0#1|) .cse10 (= |ULTIMATE.start_main_~q~0#1| 1) .cse2 (= |ULTIMATE.start_main_~r~0#1| 1) .cse14)) (.cse5 (not (= (ite (<= 1 |ULTIMATE.start_main_~y~0#1|) 1 0) 0))) (.cse6 (= |ULTIMATE.start_main_~p~0#1| 1)) (.cse7 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse11 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse12 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse13 (= |ULTIMATE.start_main_~s~0#1| 1)) (.cse0 (or (not (= |ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~v~0#1|)) (= .cse17 (+ .cse18 .cse21 .cse19 .cse22 .cse23 .cse20)))) (.cse1 (= |ULTIMATE.start_main_~k~0#1| 0)) (.cse15 (= (select |#valid| 2) 1)) (.cse16 (= |#NULL.offset| 0)) (.cse24 (= (select .cse30 0) 48)) (.cse27 (= (select .cse30 1) 0)) (.cse28 (< 0 |#StackHeapBarrier|)) (.cse29 (= |#NULL.base| 0))) (or (and (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~c~0#1|) .cse0 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~v~0#1|) .cse1 (<= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~c~0#1|) .cse2 (or .cse3 (and .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13)) .cse14 .cse15 .cse16 (or (= .cse17 (+ .cse18 .cse19 (* 2 .cse20) (* .cse21 2) .cse22 .cse23)) (not (= (* 2 |ULTIMATE.start_main_~v~0#1|) |ULTIMATE.start_main_~c~0#1|))) .cse24 (= (+ .cse25 .cse26) |ULTIMATE.start_main_~a~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2) .cse27 .cse28 .cse29) (and (<= (* (div |ULTIMATE.start_main_~v~0#1| 2) 2) |ULTIMATE.start_main_~c~0#1|) (or .cse3 (and .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 (= |ULTIMATE.start_main_~r~0#1| 0) .cse11 .cse2 .cse14 .cse12 .cse13)) .cse0 .cse1 (<= |ULTIMATE.start_main_~c~0#1| 2) (= (* 2 |ULTIMATE.start_main_~b~0#1|) |ULTIMATE.start_main_~v~0#1|) .cse15 .cse16 .cse24 .cse27 (= 2 |ULTIMATE.start_main_~d~0#1|) .cse28 .cse29))))) [2022-11-22 00:38:17,819 INFO L895 garLoopResultBuilder]: At program point L50-1(line 50) the Hoare annotation is: (let ((.cse25 (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse26 (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|))) (let ((.cse30 (select |#memory_int| 1)) (.cse17 (+ .cse25 |ULTIMATE.start_main_~b~0#1| .cse26)) (.cse18 (* |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse21 (* |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse19 (* |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse22 (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse23 (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse20 (* |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse4 (= (select |#length| 3) 12)) (.cse8 (= 11 (select |#length| 2))) (.cse9 (= 2 (select |#length| 1))) (.cse10 (= (select |#valid| 3) 1)) (.cse2 (= (select |#valid| 1) 1)) (.cse14 (= (select |#valid| 0) 0))) (let ((.cse3 (and .cse4 (= |ULTIMATE.start_main_~temp~0#1| 0) (not (= 0 (ite (<= 1 |ULTIMATE.start_main_~x~0#1|) 1 0))) (= |ULTIMATE.start_main_~p~0#1| 0) (= |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~temp~0#1|) (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|) (not (= (ite (and (<= |ULTIMATE.start_main_~y~0#1| 2) (<= 0 |ULTIMATE.start_main_~y~0#1|)) 1 0) 0)) (< |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|) .cse8 .cse9 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~x~0#1|) .cse10 (= |ULTIMATE.start_main_~q~0#1| 1) .cse2 (= |ULTIMATE.start_main_~r~0#1| 1) .cse14)) (.cse5 (not (= (ite (<= 1 |ULTIMATE.start_main_~y~0#1|) 1 0) 0))) (.cse6 (= |ULTIMATE.start_main_~p~0#1| 1)) (.cse7 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse11 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse12 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse13 (= |ULTIMATE.start_main_~s~0#1| 1)) (.cse0 (or (not (= |ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~v~0#1|)) (= .cse17 (+ .cse18 .cse21 .cse19 .cse22 .cse23 .cse20)))) (.cse1 (= |ULTIMATE.start_main_~k~0#1| 0)) (.cse15 (= (select |#valid| 2) 1)) (.cse16 (= |#NULL.offset| 0)) (.cse24 (= (select .cse30 0) 48)) (.cse27 (= (select .cse30 1) 0)) (.cse28 (< 0 |#StackHeapBarrier|)) (.cse29 (= |#NULL.base| 0))) (or (and (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~c~0#1|) .cse0 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~v~0#1|) .cse1 (<= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~c~0#1|) .cse2 (or .cse3 (and .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13)) .cse14 .cse15 .cse16 (or (= .cse17 (+ .cse18 .cse19 (* 2 .cse20) (* .cse21 2) .cse22 .cse23)) (not (= (* 2 |ULTIMATE.start_main_~v~0#1|) |ULTIMATE.start_main_~c~0#1|))) .cse24 (= (+ .cse25 .cse26) |ULTIMATE.start_main_~a~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2) .cse27 .cse28 .cse29) (and (<= (* (div |ULTIMATE.start_main_~v~0#1| 2) 2) |ULTIMATE.start_main_~c~0#1|) (or .cse3 (and .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 (= |ULTIMATE.start_main_~r~0#1| 0) .cse11 .cse2 .cse14 .cse12 .cse13)) .cse0 .cse1 (<= |ULTIMATE.start_main_~c~0#1| 2) (= (* 2 |ULTIMATE.start_main_~b~0#1|) |ULTIMATE.start_main_~v~0#1|) .cse15 .cse16 .cse24 .cse27 (= 2 |ULTIMATE.start_main_~d~0#1|) .cse28 .cse29))))) [2022-11-22 00:38:17,819 INFO L895 garLoopResultBuilder]: At program point L42-2(lines 42 62) the Hoare annotation is: (let ((.cse29 (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse30 (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|))) (let ((.cse28 (select |#memory_int| 1)) (.cse35 (+ .cse29 |ULTIMATE.start_main_~b~0#1| .cse30)) (.cse31 (* |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse32 (* |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse33 (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse34 (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|))) (let ((.cse5 (or (not (= |ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~v~0#1|)) (= .cse35 (+ .cse31 (* |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|) .cse32 .cse33 .cse34 (* |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|))))) (.cse21 (= (+ .cse31 .cse32 .cse33 .cse34) .cse35)) (.cse23 (<= 0 |ULTIMATE.start_main_~c~0#1|)) (.cse2 (* 2 |ULTIMATE.start_main_~b~0#1|)) (.cse11 (= (select |#valid| 2) 1)) (.cse12 (= |#NULL.offset| 0)) (.cse14 (= (select .cse28 0) 48)) (.cse15 (= (+ .cse29 .cse30) |ULTIMATE.start_main_~a~0#1|)) (.cse16 (<= |ULTIMATE.start_main_~x~0#1| 2)) (.cse17 (= (select .cse28 1) 0)) (.cse19 (< 0 |#StackHeapBarrier|)) (.cse1 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse7 (= |ULTIMATE.start_main_~r~0#1| 0)) (.cse8 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse13 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse18 (= |ULTIMATE.start_main_~s~0#1| 1)) (.cse0 (= (select |#length| 3) 12)) (.cse22 (not (= (ite (and (<= |ULTIMATE.start_main_~y~0#1| 2) (<= 0 |ULTIMATE.start_main_~y~0#1|)) 1 0) 0))) (.cse3 (= 11 (select |#length| 2))) (.cse4 (= 2 (select |#length| 1))) (.cse6 (= (select |#valid| 3) 1)) (.cse24 (= |ULTIMATE.start_main_~q~0#1| 1)) (.cse9 (= (select |#valid| 1) 1)) (.cse26 (= |ULTIMATE.start_main_~r~0#1| 1)) (.cse10 (= (select |#valid| 0) 0)) (.cse25 (<= 1 |ULTIMATE.start_main_~x~0#1|)) (.cse20 (= |#NULL.base| 0))) (or (and (= |ULTIMATE.start_main_~k~0#1| 1) .cse0 .cse1 (not (<= .cse2 |ULTIMATE.start_main_~x~0#1|)) .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13 .cse14 .cse15 .cse16 .cse17 (<= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~x~0#1|) .cse18 .cse19 (= (+ |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~c~0#1|) |ULTIMATE.start_main_~x~0#1|) .cse20) (and .cse21 .cse0 (not (<= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~c~0#1|)) (<= |ULTIMATE.start_main_~a~0#1| 2) .cse22 (<= (+ |ULTIMATE.start_main_~b~0#1| 1) |ULTIMATE.start_main_~a~0#1|) .cse3 .cse4 .cse5 .cse6 .cse23 .cse24 (= |ULTIMATE.start_main_~s~0#1| 0) .cse25 .cse9 .cse26 .cse10 .cse11 .cse12 (not (<= |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~x~0#1|)) .cse14 .cse15 .cse17 .cse19 .cse20) (and .cse21 .cse0 .cse1 .cse3 .cse4 .cse6 (<= (+ .cse2 |ULTIMATE.start_main_~c~0#1|) 2) .cse23 .cse7 .cse8 (<= (+ |ULTIMATE.start_main_~c~0#1| 1) .cse2) .cse25 .cse9 (= .cse2 |ULTIMATE.start_main_~v~0#1|) .cse10 .cse11 .cse12 .cse13 .cse14 .cse15 .cse16 .cse17 (= 2 |ULTIMATE.start_main_~d~0#1|) .cse18 .cse19 .cse20) (and (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~c~0#1|) (= |ULTIMATE.start_main_~k~0#1| 0) .cse11 .cse12 .cse14 .cse15 .cse16 .cse17 .cse19 (let ((.cse27 (not (= 0 (ite .cse25 1 0))))) (or (and .cse0 .cse27 (not (= (ite (<= 1 |ULTIMATE.start_main_~y~0#1|) 1 0) 0)) .cse22 .cse1 .cse3 .cse4 .cse6 .cse7 .cse8 .cse9 .cse10 .cse13 .cse18) (and .cse0 (= |ULTIMATE.start_main_~temp~0#1| 0) .cse27 (= |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~temp~0#1|) (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|) .cse22 (< |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|) .cse3 .cse4 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~x~0#1|) .cse6 .cse24 .cse9 .cse26 .cse10))) .cse20))))) [2022-11-22 00:38:17,819 INFO L899 garLoopResultBuilder]: For program point L42-3(lines 42 62) no Hoare annotation was computed. [2022-11-22 00:38:17,819 INFO L899 garLoopResultBuilder]: For program point L26(line 26) no Hoare annotation was computed. [2022-11-22 00:38:17,819 INFO L895 garLoopResultBuilder]: At program point L22(line 22) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (and (= (select |#length| 3) 12) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (= 11 (select |#length| 2)) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (<= 0 (+ |ULTIMATE.start_main_~x~0#1| 2147483648)) (= (select |#valid| 1) 1) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= (select .cse0 0) 48) (= (select .cse0 1) 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) [2022-11-22 00:38:17,820 INFO L899 garLoopResultBuilder]: For program point L22-1(line 22) no Hoare annotation was computed. [2022-11-22 00:38:17,820 INFO L895 garLoopResultBuilder]: At program point L51(line 51) the Hoare annotation is: (let ((.cse25 (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse26 (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|))) (let ((.cse30 (select |#memory_int| 1)) (.cse17 (+ .cse25 |ULTIMATE.start_main_~b~0#1| .cse26)) (.cse18 (* |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse21 (* |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse19 (* |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse22 (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse23 (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse20 (* |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse4 (= (select |#length| 3) 12)) (.cse8 (= 11 (select |#length| 2))) (.cse9 (= 2 (select |#length| 1))) (.cse10 (= (select |#valid| 3) 1)) (.cse2 (= (select |#valid| 1) 1)) (.cse14 (= (select |#valid| 0) 0))) (let ((.cse3 (and .cse4 (= |ULTIMATE.start_main_~temp~0#1| 0) (not (= 0 (ite (<= 1 |ULTIMATE.start_main_~x~0#1|) 1 0))) (= |ULTIMATE.start_main_~p~0#1| 0) (= |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~temp~0#1|) (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|) (not (= (ite (and (<= |ULTIMATE.start_main_~y~0#1| 2) (<= 0 |ULTIMATE.start_main_~y~0#1|)) 1 0) 0)) (< |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|) .cse8 .cse9 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~x~0#1|) .cse10 (= |ULTIMATE.start_main_~q~0#1| 1) .cse2 (= |ULTIMATE.start_main_~r~0#1| 1) .cse14)) (.cse5 (not (= (ite (<= 1 |ULTIMATE.start_main_~y~0#1|) 1 0) 0))) (.cse6 (= |ULTIMATE.start_main_~p~0#1| 1)) (.cse7 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse11 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse12 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse13 (= |ULTIMATE.start_main_~s~0#1| 1)) (.cse0 (or (not (= |ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~v~0#1|)) (= .cse17 (+ .cse18 .cse21 .cse19 .cse22 .cse23 .cse20)))) (.cse1 (= |ULTIMATE.start_main_~k~0#1| 0)) (.cse15 (= (select |#valid| 2) 1)) (.cse16 (= |#NULL.offset| 0)) (.cse24 (= (select .cse30 0) 48)) (.cse27 (= (select .cse30 1) 0)) (.cse28 (< 0 |#StackHeapBarrier|)) (.cse29 (= |#NULL.base| 0))) (or (and (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~c~0#1|) .cse0 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~v~0#1|) .cse1 (<= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~c~0#1|) .cse2 (or .cse3 (and .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13)) .cse14 .cse15 .cse16 (or (= .cse17 (+ .cse18 .cse19 (* 2 .cse20) (* .cse21 2) .cse22 .cse23)) (not (= (* 2 |ULTIMATE.start_main_~v~0#1|) |ULTIMATE.start_main_~c~0#1|))) .cse24 (= (+ .cse25 .cse26) |ULTIMATE.start_main_~a~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2) .cse27 .cse28 .cse29) (and (<= (* (div |ULTIMATE.start_main_~v~0#1| 2) 2) |ULTIMATE.start_main_~c~0#1|) (or .cse3 (and .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 (= |ULTIMATE.start_main_~r~0#1| 0) .cse11 .cse2 .cse14 .cse12 .cse13)) .cse0 .cse1 (<= |ULTIMATE.start_main_~c~0#1| 2) (= (* 2 |ULTIMATE.start_main_~b~0#1|) |ULTIMATE.start_main_~v~0#1|) .cse15 .cse16 .cse24 .cse27 (= 2 |ULTIMATE.start_main_~d~0#1|) .cse28 .cse29))))) [2022-11-22 00:38:17,820 INFO L899 garLoopResultBuilder]: For program point L43(lines 43 44) no Hoare annotation was computed. [2022-11-22 00:38:17,820 INFO L902 garLoopResultBuilder]: At program point assume_abort_if_notENTRY(lines 7 9) the Hoare annotation is: true [2022-11-22 00:38:17,821 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 7 9) no Hoare annotation was computed. [2022-11-22 00:38:17,821 INFO L902 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 10 16) the Hoare annotation is: true [2022-11-22 00:38:17,821 INFO L899 garLoopResultBuilder]: For program point L12(lines 12 13) no Hoare annotation was computed. [2022-11-22 00:38:17,821 INFO L899 garLoopResultBuilder]: For program point L11(lines 11 14) no Hoare annotation was computed. [2022-11-22 00:38:17,821 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 10 16) no Hoare annotation was computed. [2022-11-22 00:38:17,821 INFO L899 garLoopResultBuilder]: For program point L11-2(lines 10 16) no Hoare annotation was computed. [2022-11-22 00:38:17,821 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2022-11-22 00:38:17,824 INFO L444 BasicCegarLoop]: Path program histogram: [9, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:38:17,826 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-22 00:38:17,872 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 12:38:17 BoogieIcfgContainer [2022-11-22 00:38:17,883 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-22 00:38:17,884 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-22 00:38:17,884 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-22 00:38:17,885 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-22 00:38:17,885 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:32:43" (3/4) ... [2022-11-22 00:38:17,888 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-22 00:38:17,893 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2022-11-22 00:38:17,894 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2022-11-22 00:38:17,900 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2022-11-22 00:38:17,900 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2022-11-22 00:38:17,900 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-11-22 00:38:17,900 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-22 00:38:17,950 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fad2086d-8d4b-46b7-a361-ff27000d5422/bin/utaipan-g80aRyZoba/witness.graphml [2022-11-22 00:38:17,950 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-22 00:38:17,951 INFO L158 Benchmark]: Toolchain (without parser) took 335612.98ms. Allocated memory was 205.5MB in the beginning and 625.0MB in the end (delta: 419.4MB). Free memory was 173.3MB in the beginning and 456.8MB in the end (delta: -283.5MB). Peak memory consumption was 136.5MB. Max. memory is 16.1GB. [2022-11-22 00:38:17,951 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 142.6MB. Free memory is still 84.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-22 00:38:17,951 INFO L158 Benchmark]: CACSL2BoogieTranslator took 248.79ms. Allocated memory is still 205.5MB. Free memory was 173.3MB in the beginning and 162.2MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-22 00:38:17,954 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.37ms. Allocated memory is still 205.5MB. Free memory was 162.2MB in the beginning and 160.4MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-22 00:38:17,954 INFO L158 Benchmark]: Boogie Preprocessor took 21.86ms. Allocated memory is still 205.5MB. Free memory was 160.4MB in the beginning and 159.2MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-22 00:38:17,954 INFO L158 Benchmark]: RCFGBuilder took 359.61ms. Allocated memory is still 205.5MB. Free memory was 159.2MB in the beginning and 146.0MB in the end (delta: 13.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-22 00:38:17,957 INFO L158 Benchmark]: TraceAbstraction took 334866.46ms. Allocated memory was 205.5MB in the beginning and 625.0MB in the end (delta: 419.4MB). Free memory was 145.4MB in the beginning and 460.0MB in the end (delta: -314.6MB). Peak memory consumption was 360.9MB. Max. memory is 16.1GB. [2022-11-22 00:38:17,957 INFO L158 Benchmark]: Witness Printer took 66.09ms. Allocated memory is still 625.0MB. Free memory was 460.0MB in the beginning and 456.8MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-22 00:38:17,965 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 142.6MB. Free memory is still 84.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 248.79ms. Allocated memory is still 205.5MB. Free memory was 173.3MB in the beginning and 162.2MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 43.37ms. Allocated memory is still 205.5MB. Free memory was 162.2MB in the beginning and 160.4MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 21.86ms. Allocated memory is still 205.5MB. Free memory was 160.4MB in the beginning and 159.2MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 359.61ms. Allocated memory is still 205.5MB. Free memory was 159.2MB in the beginning and 146.0MB in the end (delta: 13.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 334866.46ms. Allocated memory was 205.5MB in the beginning and 625.0MB in the end (delta: 419.4MB). Free memory was 145.4MB in the beginning and 460.0MB in the end (delta: -314.6MB). Peak memory consumption was 360.9MB. Max. memory is 16.1GB. * Witness Printer took 66.09ms. Allocated memory is still 625.0MB. Free memory was 460.0MB in the beginning and 456.8MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 30 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 334.7s, OverallIterations: 21, TraceHistogramMax: 27, PathProgramHistogramMax: 9, EmptinessCheckTime: 0.0s, AutomataDifference: 77.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 67.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 3 mSolverCounterUnknown, 2229 SdHoareTripleChecker+Valid, 36.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2153 mSDsluCounter, 3707 SdHoareTripleChecker+Invalid, 35.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2896 mSDsCounter, 2179 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 9253 IncrementalHoareTripleChecker+Invalid, 11435 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2179 mSolverCounterUnsat, 811 mSDtfsCounter, 9253 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4843 GetRequests, 3716 SyntacticMatches, 334 SemanticMatches, 793 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20676 ImplicationChecksByTransitivity, 115.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=248occurred in iteration=20, InterpolantAutomatonStates: 350, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 3.0s AutomataMinimizationTime, 21 MinimizatonAttempts, 399 StatesRemovedByMinimization, 16 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 15 LocationsWithAnnotation, 361 PreInvPairs, 429 NumberOfFragments, 3964 HoareAnnotationTreeSize, 361 FomulaSimplifications, 14272 FormulaSimplificationTreeSizeReduction, 13.1s HoareSimplificationTime, 15 FomulaSimplificationsInter, 371790 FormulaSimplificationTreeSizeReductionInter, 53.9s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 20.6s InterpolantComputationTime, 1666 NumberOfCodeBlocks, 1356 NumberOfCodeBlocksAsserted, 30 NumberOfCheckSat, 3001 ConstructedInterpolants, 12 QuantifiedInterpolants, 14187 SizeOfPredicates, 135 NumberOfNonLiveVariables, 3778 ConjunctsInSsa, 503 ConjunctsInUnsatCore, 37 InterpolantComputations, 3 PerfectInterpolantSequences, 11798/12526 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: 2.1s, ICFG_INTERPRETER_ENTERED_PROCEDURES: 8, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 62, DAG_INTERPRETER_EARLY_EXITS: 3, TOOLS_POST_APPLICATIONS: 60, TOOLS_POST_TIME: 0.7s, TOOLS_POST_CALL_APPLICATIONS: 41, TOOLS_POST_CALL_TIME: 0.8s, TOOLS_POST_RETURN_APPLICATIONS: 26, TOOLS_POST_RETURN_TIME: 0.1s, TOOLS_QUANTIFIERELIM_APPLICATIONS: 127, TOOLS_QUANTIFIERELIM_TIME: 1.4s, TOOLS_QUANTIFIERELIM_MAX_TIME: 0.2s, FLUID_QUERY_TIME: 0.0s, FLUID_QUERIES: 179, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 48, DOMAIN_JOIN_TIME: 0.3s, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME: 0.0s, DOMAIN_WIDEN_APPLICATIONS: 2, DOMAIN_WIDEN_TIME: 0.0s, DOMAIN_ISSUBSETEQ_APPLICATIONS: 4, DOMAIN_ISSUBSETEQ_TIME: 0.0s, DOMAIN_ISBOTTOM_APPLICATIONS: 62, DOMAIN_ISBOTTOM_TIME: 0.1s, LOOP_SUMMARIZER_APPLICATIONS: 2, LOOP_SUMMARIZER_CACHE_MISSES: 2, LOOP_SUMMARIZER_OVERALL_TIME: 0.4s, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME: 0.4s, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 4, CALL_SUMMARIZER_APPLICATIONS: 26, CALL_SUMMARIZER_CACHE_MISSES: 4, CALL_SUMMARIZER_OVERALL_TIME: 0.0s, CALL_SUMMARIZER_NEW_COMPUTATION_TIME: 0.0s, PROCEDURE_GRAPH_BUILDER_TIME: 0.0s, PATH_EXPR_TIME: 0.0s, REGEX_TO_DAG_TIME: 0.0s, DAG_COMPRESSION_TIME: 0.0s, DAG_COMPRESSION_PROCESSED_NODES: 753, DAG_COMPRESSION_RETAINED_NODES: 183, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 74]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 42]: Loop Invariant Derived loop invariant: (((((((((((((((((((((((((k == 1 && unknown-#length-unknown[3] == 12) && b == y) && !(2 * b <= x)) && 11 == unknown-#length-unknown[2]) && 2 == unknown-#length-unknown[1]) && (!(c == v) || r * y + b + p * x == k * q * x + d * q * x + k * s * y + s * y + q * x + d * s * y)) && \valid[3] == 1) && r == 0) && q == 0) && \valid[1] == 1) && \valid[0] == 0) && \valid[2] == 1) && #NULL == 0) && a == x) && unknown-#memory_int-unknown[1][0] == 48) && r * y + p * x == a) && x <= 2) && unknown-#memory_int-unknown[1][1] == 0) && b <= x) && s == 1) && 0 < unknown-#StackHeapBarrier-unknown) && b + c == x) && #NULL == 0) || ((((((((((((((((((((((((k * q * x + k * s * y + s * y + q * x == r * y + b + p * x && unknown-#length-unknown[3] == 12) && !(b <= c)) && a <= 2) && !((if y <= 2 && 0 <= y then 1 else 0) == 0)) && b + 1 <= a) && 11 == unknown-#length-unknown[2]) && 2 == unknown-#length-unknown[1]) && (!(c == v) || r * y + b + p * x == k * q * x + d * q * x + k * s * y + s * y + q * x + d * s * y)) && \valid[3] == 1) && 0 <= c) && q == 1) && s == 0) && 1 <= x) && \valid[1] == 1) && r == 1) && \valid[0] == 0) && \valid[2] == 1) && #NULL == 0) && !(y <= x)) && unknown-#memory_int-unknown[1][0] == 48) && r * y + p * x == a) && unknown-#memory_int-unknown[1][1] == 0) && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0)) || (((((((((((((((((((((((((k * q * x + k * s * y + s * y + q * x == r * y + b + p * x && unknown-#length-unknown[3] == 12) && b == y) && 11 == unknown-#length-unknown[2]) && 2 == unknown-#length-unknown[1]) && \valid[3] == 1) && 2 * b + c <= 2) && 0 <= c) && r == 0) && q == 0) && c + 1 <= 2 * b) && 1 <= x) && \valid[1] == 1) && 2 * b == v) && \valid[0] == 0) && \valid[2] == 1) && #NULL == 0) && a == x) && unknown-#memory_int-unknown[1][0] == 48) && r * y + p * x == a) && x <= 2) && unknown-#memory_int-unknown[1][1] == 0) && 2 == d) && s == 1) && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0)) || ((((((((((a == c && k == 0) && \valid[2] == 1) && #NULL == 0) && unknown-#memory_int-unknown[1][0] == 48) && r * y + p * x == a) && x <= 2) && unknown-#memory_int-unknown[1][1] == 0) && 0 < unknown-#StackHeapBarrier-unknown) && ((((((((((((((unknown-#length-unknown[3] == 12 && !(0 == (if 1 <= x then 1 else 0))) && !((if 1 <= y then 1 else 0) == 0)) && !((if y <= 2 && 0 <= y then 1 else 0) == 0)) && b == y) && 11 == unknown-#length-unknown[2]) && 2 == unknown-#length-unknown[1]) && \valid[3] == 1) && r == 0) && q == 0) && \valid[1] == 1) && \valid[0] == 0) && a == x) && s == 1) || ((((((((((((((unknown-#length-unknown[3] == 12 && temp == 0) && !(0 == (if 1 <= x then 1 else 0))) && s == temp) && a == y) && !((if y <= 2 && 0 <= y then 1 else 0) == 0)) && x < y) && 11 == unknown-#length-unknown[2]) && 2 == unknown-#length-unknown[1]) && b == x) && \valid[3] == 1) && q == 1) && \valid[1] == 1) && r == 1) && \valid[0] == 0))) && #NULL == 0) - InvariantResult [Line: 49]: Loop Invariant Derived loop invariant: ((((((((((((((((a == c && (!(c == v) || r * y + b + p * x == k * q * x + d * q * x + k * s * y + s * y + q * x + d * s * y)) && b == v) && k == 0) && b <= c) && \valid[1] == 1) && ((((((((((((((((unknown-#length-unknown[3] == 12 && temp == 0) && !(0 == (if 1 <= x then 1 else 0))) && p == 0) && s == temp) && a == y) && !((if y <= 2 && 0 <= y then 1 else 0) == 0)) && x < y) && 11 == unknown-#length-unknown[2]) && 2 == unknown-#length-unknown[1]) && b == x) && \valid[3] == 1) && q == 1) && \valid[1] == 1) && r == 1) && \valid[0] == 0) || (((((((((unknown-#length-unknown[3] == 12 && !((if 1 <= y then 1 else 0) == 0)) && p == 1) && b == y) && 11 == unknown-#length-unknown[2]) && 2 == unknown-#length-unknown[1]) && \valid[3] == 1) && q == 0) && a == x) && s == 1))) && \valid[0] == 0) && \valid[2] == 1) && #NULL == 0) && (r * y + b + p * x == k * q * x + k * s * y + 2 * (d * s * y) + d * q * x * 2 + s * y + q * x || !(2 * v == c))) && unknown-#memory_int-unknown[1][0] == 48) && r * y + p * x == a) && x <= 2) && unknown-#memory_int-unknown[1][1] == 0) && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0) || ((((((((((((v / 2 * 2 <= c && ((((((((((((((((unknown-#length-unknown[3] == 12 && temp == 0) && !(0 == (if 1 <= x then 1 else 0))) && p == 0) && s == temp) && a == y) && !((if y <= 2 && 0 <= y then 1 else 0) == 0)) && x < y) && 11 == unknown-#length-unknown[2]) && 2 == unknown-#length-unknown[1]) && b == x) && \valid[3] == 1) && q == 1) && \valid[1] == 1) && r == 1) && \valid[0] == 0) || ((((((((((((unknown-#length-unknown[3] == 12 && !((if 1 <= y then 1 else 0) == 0)) && p == 1) && b == y) && 11 == unknown-#length-unknown[2]) && 2 == unknown-#length-unknown[1]) && \valid[3] == 1) && r == 0) && q == 0) && \valid[1] == 1) && \valid[0] == 0) && a == x) && s == 1))) && (!(c == v) || r * y + b + p * x == k * q * x + d * q * x + k * s * y + s * y + q * x + d * s * y)) && k == 0) && c <= 2) && 2 * b == v) && \valid[2] == 1) && #NULL == 0) && unknown-#memory_int-unknown[1][0] == 48) && unknown-#memory_int-unknown[1][1] == 0) && 2 == d) && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0) - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: ((((((((((((((((((((((0 <= b && unknown-#length-unknown[3] == 12) && r * y + p * x == a + s * y + q * x) && y <= 2) && 1 <= y) && a <= 2) && b + 1 <= a) && 11 == unknown-#length-unknown[2]) && 2 == unknown-#length-unknown[1]) && \valid[3] == 1) && 3 * c <= 0) && 1 <= x) && b <= c) && \valid[1] == 1) && \valid[0] == 0) && \valid[2] == 1) && #NULL == 0) && unknown-#memory_int-unknown[1][0] == 48) && x <= 2) && unknown-#memory_int-unknown[1][1] == 0) && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0) || (((((((((((((((((((((((((unknown-#length-unknown[3] == 12 && temp == 0) && q + k * p == 1) && c == x) && a == y) && !((if y <= 2 && 0 <= y then 1 else 0) == 0)) && 11 == unknown-#length-unknown[2]) && 2 == unknown-#length-unknown[1]) && b == c) && \valid[3] == 1) && k == 0) && r == 1) && !(a <= c)) && k + s == temp) || ((((((((((unknown-#length-unknown[3] == 12 && !((if 1 <= y then 1 else 0) == 0)) && !((if y <= 2 && 0 <= y then 1 else 0) == 0)) && b == y) && 11 == unknown-#length-unknown[2]) && 2 == unknown-#length-unknown[1]) && \valid[3] == 1) && r == 0) && q == 0) && a == x) && s == 1)) && 1 <= x) && \valid[1] == 1) && \valid[0] == 0) && \valid[2] == 1) && #NULL == 0) && unknown-#memory_int-unknown[1][0] == 48) && r * y + p * x == a) && x <= 2) && unknown-#memory_int-unknown[1][1] == 0) && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0)) || (((((((((((((((((((((b + y == x && unknown-#length-unknown[3] == 12) && p == 0) && a == y) && 11 == unknown-#length-unknown[2]) && 2 == unknown-#length-unknown[1]) && \valid[3] == 1) && y <= x) && r + s == 0) && q == 1) && \valid[1] == 1) && r == 1) && !(2 * y <= x)) && (2 * v <= c || !(c == v))) && \valid[0] == 0) && \valid[2] == 1) && #NULL == 0) && unknown-#memory_int-unknown[1][0] == 48) && x <= 2) && unknown-#memory_int-unknown[1][1] == 0) && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0) RESULT: Ultimate proved your program to be correct! [2022-11-22 00:38:18,068 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fad2086d-8d4b-46b7-a361-ff27000d5422/bin/utaipan-g80aRyZoba/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