./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_unwindbound2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_e3f76a9a-5399-4729-8539-1928ee9d4caa/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_e3f76a9a-5399-4729-8539-1928ee9d4caa/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_e3f76a9a-5399-4729-8539-1928ee9d4caa/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_e3f76a9a-5399-4729-8539-1928ee9d4caa/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_unwindbound2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_e3f76a9a-5399-4729-8539-1928ee9d4caa/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_e3f76a9a-5399-4729-8539-1928ee9d4caa/bin/utaipan --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 ae3408cd4ee618a2b4029fb36ac233f268b706d6 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2020-12-09 08:06:54,575 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 08:06:54,576 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 08:06:54,603 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 08:06:54,604 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 08:06:54,605 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 08:06:54,607 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 08:06:54,617 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 08:06:54,619 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 08:06:54,621 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 08:06:54,622 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 08:06:54,623 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 08:06:54,624 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 08:06:54,625 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 08:06:54,626 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 08:06:54,627 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 08:06:54,627 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 08:06:54,628 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 08:06:54,630 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 08:06:54,631 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 08:06:54,633 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 08:06:54,634 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 08:06:54,635 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 08:06:54,636 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 08:06:54,638 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 08:06:54,638 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 08:06:54,638 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 08:06:54,639 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 08:06:54,640 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 08:06:54,641 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 08:06:54,641 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 08:06:54,642 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 08:06:54,642 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 08:06:54,643 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 08:06:54,644 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 08:06:54,644 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 08:06:54,645 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 08:06:54,645 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 08:06:54,645 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 08:06:54,646 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 08:06:54,646 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 08:06:54,647 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_e3f76a9a-5399-4729-8539-1928ee9d4caa/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 08:06:54,663 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 08:06:54,663 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 08:06:54,664 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 08:06:54,664 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 08:06:54,664 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 08:06:54,664 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 08:06:54,664 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 08:06:54,665 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 08:06:54,665 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 08:06:54,665 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 08:06:54,665 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 08:06:54,665 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 08:06:54,665 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 08:06:54,665 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 08:06:54,665 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 08:06:54,666 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 08:06:54,666 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 08:06:54,666 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 08:06:54,666 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 08:06:54,666 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 08:06:54,666 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 08:06:54,666 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 08:06:54,666 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 08:06:54,667 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 08:06:54,667 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 08:06:54,667 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 08:06:54,667 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 08:06:54,667 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 08:06:54,667 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 08:06:54,667 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 08:06:54,667 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 08:06:54,667 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 08:06:54,668 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 08:06:54,668 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 08:06:54,668 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 08:06:54,668 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 08:06:54,668 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 08:06:54,668 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 08:06:54,668 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 08:06:54,668 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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-vcloud-master/worker/run_dir_e3f76a9a-5399-4729-8539-1928ee9d4caa/bin/utaipan/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_e3f76a9a-5399-4729-8539-1928ee9d4caa/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ae3408cd4ee618a2b4029fb36ac233f268b706d6 [2020-12-09 08:06:54,852 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 08:06:54,868 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 08:06:54,870 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 08:06:54,871 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 08:06:54,872 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 08:06:54,873 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_e3f76a9a-5399-4729-8539-1928ee9d4caa/bin/utaipan/../../sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_unwindbound2.c [2020-12-09 08:06:54,917 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e3f76a9a-5399-4729-8539-1928ee9d4caa/bin/utaipan/data/e757a5b7c/7b1b6d476a8048fd962c8753e9a6f757/FLAG3dc8f9633 [2020-12-09 08:06:55,293 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 08:06:55,293 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_e3f76a9a-5399-4729-8539-1928ee9d4caa/sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_unwindbound2.c [2020-12-09 08:06:55,298 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e3f76a9a-5399-4729-8539-1928ee9d4caa/bin/utaipan/data/e757a5b7c/7b1b6d476a8048fd962c8753e9a6f757/FLAG3dc8f9633 [2020-12-09 08:06:55,708 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_e3f76a9a-5399-4729-8539-1928ee9d4caa/bin/utaipan/data/e757a5b7c/7b1b6d476a8048fd962c8753e9a6f757 [2020-12-09 08:06:55,712 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 08:06:55,714 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 08:06:55,717 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 08:06:55,717 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 08:06:55,722 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 08:06:55,723 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 08:06:55" (1/1) ... [2020-12-09 08:06:55,726 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33cdcd98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:06:55, skipping insertion in model container [2020-12-09 08:06:55,727 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 08:06:55" (1/1) ... [2020-12-09 08:06:55,735 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 08:06:55,746 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 08:06:55,846 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_e3f76a9a-5399-4729-8539-1928ee9d4caa/sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_unwindbound2.c[588,601] [2020-12-09 08:06:55,860 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 08:06:55,866 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 08:06:55,874 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_e3f76a9a-5399-4729-8539-1928ee9d4caa/sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_unwindbound2.c[588,601] [2020-12-09 08:06:55,881 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 08:06:55,891 INFO L208 MainTranslator]: Completed translation [2020-12-09 08:06:55,891 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:06:55 WrapperNode [2020-12-09 08:06:55,892 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 08:06:55,892 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 08:06:55,892 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 08:06:55,893 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 08:06:55,898 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:06:55" (1/1) ... [2020-12-09 08:06:55,904 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:06:55" (1/1) ... [2020-12-09 08:06:55,922 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 08:06:55,923 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 08:06:55,923 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 08:06:55,923 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 08:06:55,930 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:06:55" (1/1) ... [2020-12-09 08:06:55,930 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:06:55" (1/1) ... [2020-12-09 08:06:55,932 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:06:55" (1/1) ... [2020-12-09 08:06:55,932 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:06:55" (1/1) ... [2020-12-09 08:06:55,935 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:06:55" (1/1) ... [2020-12-09 08:06:55,938 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:06:55" (1/1) ... [2020-12-09 08:06:55,939 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:06:55" (1/1) ... [2020-12-09 08:06:55,941 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 08:06:55,942 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 08:06:55,942 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 08:06:55,942 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 08:06:55,943 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:06:55" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e3f76a9a-5399-4729-8539-1928ee9d4caa/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 08:06:55,994 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 08:06:55,994 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 08:06:55,994 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 08:06:55,995 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 08:06:56,241 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 08:06:56,241 INFO L299 CfgBuilder]: Removed 27 assume(true) statements. [2020-12-09 08:06:56,242 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 08:06:56 BoogieIcfgContainer [2020-12-09 08:06:56,243 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 08:06:56,244 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 08:06:56,244 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 08:06:56,247 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 08:06:56,247 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 08:06:55" (1/3) ... [2020-12-09 08:06:56,248 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@318c3d98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 08:06:56, skipping insertion in model container [2020-12-09 08:06:56,248 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:06:55" (2/3) ... [2020-12-09 08:06:56,248 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@318c3d98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 08:06:56, skipping insertion in model container [2020-12-09 08:06:56,249 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 08:06:56" (3/3) ... [2020-12-09 08:06:56,250 INFO L111 eAbstractionObserver]: Analyzing ICFG cohencu-ll_unwindbound2.c [2020-12-09 08:06:56,263 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 08:06:56,266 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 11 error locations. [2020-12-09 08:06:56,276 INFO L253 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2020-12-09 08:06:56,299 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 08:06:56,299 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 08:06:56,299 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 08:06:56,299 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 08:06:56,300 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 08:06:56,300 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 08:06:56,300 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 08:06:56,300 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 08:06:56,315 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states. [2020-12-09 08:06:56,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-12-09 08:06:56,319 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 08:06:56,320 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-12-09 08:06:56,321 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 08:06:56,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 08:06:56,326 INFO L82 PathProgramCache]: Analyzing trace with hash 162760247, now seen corresponding path program 1 times [2020-12-09 08:06:56,335 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 08:06:56,335 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417115975] [2020-12-09 08:06:56,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 08:06:56,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 08:06:56,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 08:06:56,492 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417115975] [2020-12-09 08:06:56,492 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 08:06:56,492 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 08:06:56,493 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921017041] [2020-12-09 08:06:56,496 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 08:06:56,496 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 08:06:56,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 08:06:56,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 08:06:56,506 INFO L87 Difference]: Start difference. First operand 49 states. Second operand 4 states. [2020-12-09 08:06:56,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 08:06:56,601 INFO L93 Difference]: Finished difference Result 96 states and 124 transitions. [2020-12-09 08:06:56,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 08:06:56,602 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2020-12-09 08:06:56,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 08:06:56,611 INFO L225 Difference]: With dead ends: 96 [2020-12-09 08:06:56,611 INFO L226 Difference]: Without dead ends: 46 [2020-12-09 08:06:56,614 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 08:06:56,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-12-09 08:06:56,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 43. [2020-12-09 08:06:56,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-12-09 08:06:56,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 44 transitions. [2020-12-09 08:06:56,641 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 44 transitions. Word has length 5 [2020-12-09 08:06:56,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 08:06:56,641 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 44 transitions. [2020-12-09 08:06:56,641 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 08:06:56,641 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 44 transitions. [2020-12-09 08:06:56,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-09 08:06:56,642 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 08:06:56,642 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-09 08:06:56,642 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 08:06:56,642 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 08:06:56,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 08:06:56,643 INFO L82 PathProgramCache]: Analyzing trace with hash 1793930266, now seen corresponding path program 1 times [2020-12-09 08:06:56,643 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 08:06:56,643 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921987327] [2020-12-09 08:06:56,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 08:06:56,655 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 08:06:56,655 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1944017370] [2020-12-09 08:06:56,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e3f76a9a-5399-4729-8539-1928ee9d4caa/bin/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 08:06:56,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 08:06:56,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-09 08:06:56,693 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 08:06:56,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 08:06:56,755 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 08:06:56,820 INFO L398 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-12-09 08:06:56,821 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-12-09 08:06:56,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 08:06:56,841 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921987327] [2020-12-09 08:06:56,841 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 08:06:56,842 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1944017370] [2020-12-09 08:06:56,842 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-09 08:06:56,842 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2020-12-09 08:06:56,842 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353277017] [2020-12-09 08:06:56,848 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-09 08:06:56,849 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 08:06:56,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-09 08:06:56,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-12-09 08:06:56,850 INFO L87 Difference]: Start difference. First operand 43 states and 44 transitions. Second operand 10 states. [2020-12-09 08:07:01,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 08:07:01,102 INFO L93 Difference]: Finished difference Result 115 states and 118 transitions. [2020-12-09 08:07:01,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-09 08:07:01,102 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 7 [2020-12-09 08:07:01,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 08:07:01,104 INFO L225 Difference]: With dead ends: 115 [2020-12-09 08:07:01,104 INFO L226 Difference]: Without dead ends: 107 [2020-12-09 08:07:01,105 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2020-12-09 08:07:01,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-12-09 08:07:01,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 70. [2020-12-09 08:07:01,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-12-09 08:07:01,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 78 transitions. [2020-12-09 08:07:01,116 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 78 transitions. Word has length 7 [2020-12-09 08:07:01,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 08:07:01,116 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 78 transitions. [2020-12-09 08:07:01,116 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-09 08:07:01,116 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 78 transitions. [2020-12-09 08:07:01,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-09 08:07:01,117 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 08:07:01,117 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 08:07:01,317 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-12-09 08:07:01,319 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 08:07:01,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 08:07:01,321 INFO L82 PathProgramCache]: Analyzing trace with hash -227354147, now seen corresponding path program 1 times [2020-12-09 08:07:01,321 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 08:07:01,322 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549482419] [2020-12-09 08:07:01,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 08:07:01,355 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 08:07:01,356 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [691768898] [2020-12-09 08:07:01,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e3f76a9a-5399-4729-8539-1928ee9d4caa/bin/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 08:07:01,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 08:07:01,385 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-09 08:07:01,385 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 08:07:01,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 08:07:01,398 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 08:07:01,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 08:07:01,415 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549482419] [2020-12-09 08:07:01,415 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 08:07:01,415 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [691768898] [2020-12-09 08:07:01,415 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-09 08:07:01,416 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2020-12-09 08:07:01,416 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042006086] [2020-12-09 08:07:01,416 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 08:07:01,416 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 08:07:01,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 08:07:01,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-09 08:07:01,417 INFO L87 Difference]: Start difference. First operand 70 states and 78 transitions. Second operand 6 states. [2020-12-09 08:07:01,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 08:07:01,449 INFO L93 Difference]: Finished difference Result 114 states and 118 transitions. [2020-12-09 08:07:01,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 08:07:01,450 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 8 [2020-12-09 08:07:01,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 08:07:01,451 INFO L225 Difference]: With dead ends: 114 [2020-12-09 08:07:01,451 INFO L226 Difference]: Without dead ends: 82 [2020-12-09 08:07:01,452 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-12-09 08:07:01,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-12-09 08:07:01,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 70. [2020-12-09 08:07:01,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-12-09 08:07:01,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 76 transitions. [2020-12-09 08:07:01,463 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 76 transitions. Word has length 8 [2020-12-09 08:07:01,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 08:07:01,463 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 76 transitions. [2020-12-09 08:07:01,463 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 08:07:01,463 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 76 transitions. [2020-12-09 08:07:01,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-09 08:07:01,464 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 08:07:01,464 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 08:07:01,664 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 08:07:01,666 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 08:07:01,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 08:07:01,667 INFO L82 PathProgramCache]: Analyzing trace with hash 1685255837, now seen corresponding path program 1 times [2020-12-09 08:07:01,668 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 08:07:01,669 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466763056] [2020-12-09 08:07:01,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 08:07:01,708 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 08:07:01,708 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1521901893] [2020-12-09 08:07:01,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e3f76a9a-5399-4729-8539-1928ee9d4caa/bin/utaipan/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 08:07:01,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 08:07:01,741 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-09 08:07:01,742 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 08:07:01,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 08:07:01,782 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 08:07:01,817 INFO L398 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-12-09 08:07:01,817 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-12-09 08:07:01,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 08:07:01,834 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466763056] [2020-12-09 08:07:01,834 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 08:07:01,834 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1521901893] [2020-12-09 08:07:01,834 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-09 08:07:01,834 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2020-12-09 08:07:01,835 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039799018] [2020-12-09 08:07:01,835 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-09 08:07:01,835 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 08:07:01,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-09 08:07:01,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-12-09 08:07:01,836 INFO L87 Difference]: Start difference. First operand 70 states and 76 transitions. Second operand 10 states. [2020-12-09 08:07:02,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 08:07:02,058 INFO L93 Difference]: Finished difference Result 104 states and 104 transitions. [2020-12-09 08:07:02,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-09 08:07:02,059 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 9 [2020-12-09 08:07:02,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 08:07:02,060 INFO L225 Difference]: With dead ends: 104 [2020-12-09 08:07:02,060 INFO L226 Difference]: Without dead ends: 100 [2020-12-09 08:07:02,061 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=61, Invalid=95, Unknown=0, NotChecked=0, Total=156 [2020-12-09 08:07:02,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-12-09 08:07:02,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 70. [2020-12-09 08:07:02,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-12-09 08:07:02,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 74 transitions. [2020-12-09 08:07:02,071 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 74 transitions. Word has length 9 [2020-12-09 08:07:02,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 08:07:02,071 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 74 transitions. [2020-12-09 08:07:02,072 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-09 08:07:02,072 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 74 transitions. [2020-12-09 08:07:02,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-09 08:07:02,072 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 08:07:02,072 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 08:07:02,273 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 08:07:02,273 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 08:07:02,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 08:07:02,273 INFO L82 PathProgramCache]: Analyzing trace with hash 328345024, now seen corresponding path program 1 times [2020-12-09 08:07:02,274 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 08:07:02,274 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556817777] [2020-12-09 08:07:02,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 08:07:02,284 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 08:07:02,285 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [256650601] [2020-12-09 08:07:02,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e3f76a9a-5399-4729-8539-1928ee9d4caa/bin/utaipan/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 08:07:02,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 08:07:02,309 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 19 conjunts are in the unsatisfiable core [2020-12-09 08:07:02,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 08:07:02,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 08:07:02,353 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 08:07:02,403 INFO L398 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-12-09 08:07:02,403 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-12-09 08:07:02,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 08:07:02,421 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556817777] [2020-12-09 08:07:02,421 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 08:07:02,421 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [256650601] [2020-12-09 08:07:02,422 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-09 08:07:02,422 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2020-12-09 08:07:02,422 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357719213] [2020-12-09 08:07:02,422 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-09 08:07:02,422 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 08:07:02,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-09 08:07:02,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-12-09 08:07:02,423 INFO L87 Difference]: Start difference. First operand 70 states and 74 transitions. Second operand 10 states. [2020-12-09 08:07:02,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 08:07:02,701 INFO L93 Difference]: Finished difference Result 105 states and 107 transitions. [2020-12-09 08:07:02,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-09 08:07:02,702 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 11 [2020-12-09 08:07:02,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 08:07:02,702 INFO L225 Difference]: With dead ends: 105 [2020-12-09 08:07:02,702 INFO L226 Difference]: Without dead ends: 85 [2020-12-09 08:07:02,703 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=95, Unknown=0, NotChecked=0, Total=156 [2020-12-09 08:07:02,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-12-09 08:07:02,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 74. [2020-12-09 08:07:02,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-12-09 08:07:02,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 79 transitions. [2020-12-09 08:07:02,713 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 79 transitions. Word has length 11 [2020-12-09 08:07:02,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 08:07:02,713 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 79 transitions. [2020-12-09 08:07:02,713 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-09 08:07:02,713 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 79 transitions. [2020-12-09 08:07:02,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-12-09 08:07:02,714 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 08:07:02,714 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 08:07:02,915 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 08:07:02,915 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 08:07:02,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 08:07:02,916 INFO L82 PathProgramCache]: Analyzing trace with hash 1224742933, now seen corresponding path program 1 times [2020-12-09 08:07:02,916 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 08:07:02,916 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710799792] [2020-12-09 08:07:02,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 08:07:02,928 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 08:07:02,929 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [647946060] [2020-12-09 08:07:02,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e3f76a9a-5399-4729-8539-1928ee9d4caa/bin/utaipan/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 08:07:02,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 08:07:02,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 25 conjunts are in the unsatisfiable core [2020-12-09 08:07:02,987 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 08:07:03,048 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 08:07:03,048 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 08:07:03,080 INFO L398 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-12-09 08:07:03,080 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-12-09 08:07:03,125 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 08:07:03,126 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710799792] [2020-12-09 08:07:03,126 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 08:07:03,126 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [647946060] [2020-12-09 08:07:03,126 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [546420964] [2020-12-09 08:07:03,140 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2020-12-09 08:07:03,141 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 08:07:03,144 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 08:07:03,148 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 08:07:03,149 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 08:07:03,852 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 08:07:03,976 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 46 [2020-12-09 08:07:04,408 WARN L197 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 45 [2020-12-09 08:07:04,567 WARN L197 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 54 [2020-12-09 08:07:06,706 WARN L197 SmtUtils]: Spent 2.10 s on a formula simplification. DAG size of input: 66 DAG size of output: 49 [2020-12-09 08:07:25,941 WARN L197 SmtUtils]: Spent 14.56 s on a formula simplification. DAG size of input: 67 DAG size of output: 66 [2020-12-09 08:07:30,358 WARN L197 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 48 [2020-12-09 08:07:30,359 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 08:07:30,360 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-09 08:07:30,360 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-12-09 08:07:30,360 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772670694] [2020-12-09 08:07:30,360 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-09 08:07:30,360 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 08:07:30,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-09 08:07:30,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=491, Unknown=4, NotChecked=0, Total=600 [2020-12-09 08:07:30,361 INFO L87 Difference]: Start difference. First operand 74 states and 79 transitions. Second operand 12 states. [2020-12-09 08:08:09,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 08:08:09,193 INFO L93 Difference]: Finished difference Result 181 states and 191 transitions. [2020-12-09 08:08:09,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-12-09 08:08:09,193 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 21 [2020-12-09 08:08:09,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 08:08:09,194 INFO L225 Difference]: With dead ends: 181 [2020-12-09 08:08:09,194 INFO L226 Difference]: Without dead ends: 169 [2020-12-09 08:08:09,195 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 26.8s TimeCoverageRelationStatistics Valid=242, Invalid=1014, Unknown=4, NotChecked=0, Total=1260 [2020-12-09 08:08:09,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2020-12-09 08:08:09,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 102. [2020-12-09 08:08:09,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-12-09 08:08:09,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 115 transitions. [2020-12-09 08:08:09,210 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 115 transitions. Word has length 21 [2020-12-09 08:08:09,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 08:08:09,210 INFO L481 AbstractCegarLoop]: Abstraction has 102 states and 115 transitions. [2020-12-09 08:08:09,210 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-09 08:08:09,210 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 115 transitions. [2020-12-09 08:08:09,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-12-09 08:08:09,211 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 08:08:09,211 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 08:08:09,412 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-12-09 08:08:09,413 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 08:08:09,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 08:08:09,414 INFO L82 PathProgramCache]: Analyzing trace with hash -2066530638, now seen corresponding path program 1 times [2020-12-09 08:08:09,415 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 08:08:09,415 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149183852] [2020-12-09 08:08:09,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 08:08:09,453 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 08:08:09,454 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [596213471] [2020-12-09 08:08:09,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e3f76a9a-5399-4729-8539-1928ee9d4caa/bin/utaipan/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 08:08:09,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 08:08:09,501 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 29 conjunts are in the unsatisfiable core [2020-12-09 08:08:09,503 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 08:08:09,606 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 08:08:09,606 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 08:08:11,848 WARN L197 SmtUtils]: Spent 2.08 s on a formula simplification that was a NOOP. DAG size: 18 [2020-12-09 08:08:11,890 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 08:08:11,890 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149183852] [2020-12-09 08:08:11,890 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 08:08:11,890 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [596213471] [2020-12-09 08:08:11,890 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-09 08:08:11,891 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 13 [2020-12-09 08:08:11,891 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640829512] [2020-12-09 08:08:11,891 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-09 08:08:11,891 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 08:08:11,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-09 08:08:11,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2020-12-09 08:08:11,892 INFO L87 Difference]: Start difference. First operand 102 states and 115 transitions. Second operand 7 states. [2020-12-09 08:08:19,047 WARN L197 SmtUtils]: Spent 4.27 s on a formula simplification that was a NOOP. DAG size: 23 [2020-12-09 08:08:26,020 WARN L197 SmtUtils]: Spent 2.02 s on a formula simplification that was a NOOP. DAG size: 23 [2020-12-09 08:08:29,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 08:08:29,526 INFO L93 Difference]: Finished difference Result 104 states and 116 transitions. [2020-12-09 08:08:29,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-09 08:08:29,527 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 30 [2020-12-09 08:08:29,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 08:08:29,528 INFO L225 Difference]: With dead ends: 104 [2020-12-09 08:08:29,528 INFO L226 Difference]: Without dead ends: 102 [2020-12-09 08:08:29,528 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 48 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 12.7s TimeCoverageRelationStatistics Valid=94, Invalid=210, Unknown=2, NotChecked=0, Total=306 [2020-12-09 08:08:29,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-12-09 08:08:29,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2020-12-09 08:08:29,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-12-09 08:08:29,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 113 transitions. [2020-12-09 08:08:29,542 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 113 transitions. Word has length 30 [2020-12-09 08:08:29,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 08:08:29,543 INFO L481 AbstractCegarLoop]: Abstraction has 102 states and 113 transitions. [2020-12-09 08:08:29,543 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-09 08:08:29,543 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 113 transitions. [2020-12-09 08:08:29,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-12-09 08:08:29,543 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 08:08:29,543 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1] [2020-12-09 08:08:29,744 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 08:08:29,745 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 08:08:29,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 08:08:29,745 INFO L82 PathProgramCache]: Analyzing trace with hash 122683146, now seen corresponding path program 1 times [2020-12-09 08:08:29,745 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 08:08:29,746 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532389893] [2020-12-09 08:08:29,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 08:08:29,756 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 08:08:29,756 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1491546861] [2020-12-09 08:08:29,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e3f76a9a-5399-4729-8539-1928ee9d4caa/bin/utaipan/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 08:08:29,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 08:08:29,800 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-09 08:08:29,801 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 08:08:29,849 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 20 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 08:08:29,849 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 08:08:29,878 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 20 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 08:08:29,878 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532389893] [2020-12-09 08:08:29,878 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 08:08:29,878 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1491546861] [2020-12-09 08:08:29,879 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1196845175] [2020-12-09 08:08:29,881 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2020-12-09 08:08:29,881 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 08:08:29,881 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 08:08:29,881 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 08:08:29,881 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 08:08:30,374 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 08:08:30,535 WARN L197 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 50 [2020-12-09 08:08:30,943 WARN L197 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 45 [2020-12-09 08:08:33,107 WARN L197 SmtUtils]: Spent 2.13 s on a formula simplification. DAG size of input: 64 DAG size of output: 54 [2020-12-09 08:08:33,248 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 49 [2020-12-09 08:08:33,540 WARN L197 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 52 [2020-12-09 08:08:50,917 WARN L197 SmtUtils]: Spent 13.25 s on a formula simplification. DAG size of input: 67 DAG size of output: 66 [2020-12-09 08:08:57,381 WARN L197 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 48 [2020-12-09 08:08:57,382 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 08:08:57,382 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-09 08:08:57,382 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2020-12-09 08:08:57,382 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521796939] [2020-12-09 08:08:57,382 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 08:08:57,383 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 08:08:57,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 08:08:57,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=256, Unknown=4, NotChecked=0, Total=342 [2020-12-09 08:08:57,383 INFO L87 Difference]: Start difference. First operand 102 states and 113 transitions. Second operand 6 states. [2020-12-09 08:08:57,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 08:08:57,420 INFO L93 Difference]: Finished difference Result 124 states and 134 transitions. [2020-12-09 08:08:57,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 08:08:57,420 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 31 [2020-12-09 08:08:57,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 08:08:57,421 INFO L225 Difference]: With dead ends: 124 [2020-12-09 08:08:57,421 INFO L226 Difference]: Without dead ends: 55 [2020-12-09 08:08:57,422 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 27.0s TimeCoverageRelationStatistics Valid=88, Invalid=288, Unknown=4, NotChecked=0, Total=380 [2020-12-09 08:08:57,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-12-09 08:08:57,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-12-09 08:08:57,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-12-09 08:08:57,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 55 transitions. [2020-12-09 08:08:57,426 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 55 transitions. Word has length 31 [2020-12-09 08:08:57,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 08:08:57,427 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 55 transitions. [2020-12-09 08:08:57,427 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 08:08:57,427 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 55 transitions. [2020-12-09 08:08:57,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-12-09 08:08:57,427 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 08:08:57,427 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 08:08:57,628 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 08:08:57,628 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 08:08:57,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 08:08:57,628 INFO L82 PathProgramCache]: Analyzing trace with hash -1660894443, now seen corresponding path program 1 times [2020-12-09 08:08:57,629 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 08:08:57,629 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874438772] [2020-12-09 08:08:57,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 08:08:57,634 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 08:08:57,634 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [777697667] [2020-12-09 08:08:57,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e3f76a9a-5399-4729-8539-1928ee9d4caa/bin/utaipan/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 08:08:57,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 08:08:57,665 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 27 conjunts are in the unsatisfiable core [2020-12-09 08:08:57,666 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 08:08:57,796 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 08:08:57,796 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 08:08:58,030 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 08:08:58,030 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874438772] [2020-12-09 08:08:58,030 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 08:08:58,031 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [777697667] [2020-12-09 08:08:58,031 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1863873686] [2020-12-09 08:08:58,032 INFO L159 IcfgInterpreter]: Started Sifa with 21 locations of interest [2020-12-09 08:08:58,032 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 08:08:58,033 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 08:08:58,033 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 08:08:58,033 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 08:08:58,475 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 08:09:36,007 WARN L197 SmtUtils]: Spent 35.46 s on a formula simplification. DAG size of input: 73 DAG size of output: 66 [2020-12-09 08:09:36,503 WARN L197 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 45 [2020-12-09 08:09:38,714 WARN L197 SmtUtils]: Spent 2.16 s on a formula simplification. DAG size of input: 64 DAG size of output: 54 [2020-12-09 08:09:42,924 WARN L197 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 49 [2020-12-09 08:09:49,149 WARN L197 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 56 [2020-12-09 08:09:51,401 WARN L197 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 52 [2020-12-09 08:10:14,346 WARN L197 SmtUtils]: Spent 13.08 s on a formula simplification. DAG size of input: 67 DAG size of output: 66 [2020-12-09 08:10:14,532 WARN L197 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 43 [2020-12-09 08:10:19,021 WARN L197 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 48 [2020-12-09 08:10:22,122 WARN L197 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 49 [2020-12-09 08:10:26,465 WARN L197 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 56 [2020-12-09 08:10:30,808 WARN L197 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 51 [2020-12-09 08:10:53,375 WARN L197 SmtUtils]: Spent 18.42 s on a formula simplification. DAG size of input: 63 DAG size of output: 61 [2020-12-09 08:10:57,829 WARN L197 SmtUtils]: Spent 2.25 s on a formula simplification. DAG size of input: 65 DAG size of output: 57 [2020-12-09 08:11:16,744 WARN L197 SmtUtils]: Spent 14.68 s on a formula simplification. DAG size of input: 72 DAG size of output: 70 [2020-12-09 08:11:16,745 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 08:11:16,745 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-09 08:11:16,745 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-12-09 08:11:16,745 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318741973] [2020-12-09 08:11:16,745 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-12-09 08:11:16,745 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 08:11:16,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-12-09 08:11:16,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=888, Unknown=18, NotChecked=0, Total=1056 [2020-12-09 08:11:16,746 INFO L87 Difference]: Start difference. First operand 55 states and 55 transitions. Second operand 14 states. [2020-12-09 08:11:21,859 WARN L197 SmtUtils]: Spent 4.83 s on a formula simplification that was a NOOP. DAG size: 38 [2020-12-09 08:11:30,327 WARN L197 SmtUtils]: Spent 5.45 s on a formula simplification that was a NOOP. DAG size: 36 [2020-12-09 08:11:34,663 WARN L197 SmtUtils]: Spent 4.27 s on a formula simplification that was a NOOP. DAG size: 40 [2020-12-09 08:11:41,577 WARN L197 SmtUtils]: Spent 2.81 s on a formula simplification that was a NOOP. DAG size: 40 [2020-12-09 08:11:43,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 08:11:43,206 INFO L93 Difference]: Finished difference Result 57 states and 56 transitions. [2020-12-09 08:11:43,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-09 08:11:43,207 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 32 [2020-12-09 08:11:43,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 08:11:43,207 INFO L225 Difference]: With dead ends: 57 [2020-12-09 08:11:43,207 INFO L226 Difference]: Without dead ends: 49 [2020-12-09 08:11:43,208 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 539 ImplicationChecksByTransitivity, 159.3s TimeCoverageRelationStatistics Valid=282, Invalid=1590, Unknown=20, NotChecked=0, Total=1892 [2020-12-09 08:11:43,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-12-09 08:11:43,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2020-12-09 08:11:43,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-12-09 08:11:43,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 48 transitions. [2020-12-09 08:11:43,213 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 48 transitions. Word has length 32 [2020-12-09 08:11:43,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 08:11:43,213 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 48 transitions. [2020-12-09 08:11:43,213 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-12-09 08:11:43,213 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 48 transitions. [2020-12-09 08:11:43,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-12-09 08:11:43,214 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 08:11:43,214 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 08:11:43,415 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132,9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 08:11:43,416 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 08:11:43,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 08:11:43,417 INFO L82 PathProgramCache]: Analyzing trace with hash -496407315, now seen corresponding path program 1 times [2020-12-09 08:11:43,417 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 08:11:43,418 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804976420] [2020-12-09 08:11:43,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 08:11:43,437 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 08:11:43,438 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1649660465] [2020-12-09 08:11:43,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e3f76a9a-5399-4729-8539-1928ee9d4caa/bin/utaipan/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 08:11:43,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 08:11:43,505 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 08:11:43,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 08:11:43,520 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 08:11:43,555 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-12-09 08:11:43,555 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-09 08:11:43,756 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable190,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 08:11:43,819 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 08:11:43 BoogieIcfgContainer [2020-12-09 08:11:43,820 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 08:11:43,820 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 08:11:43,820 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 08:11:43,820 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 08:11:43,820 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 08:06:56" (3/4) ... [2020-12-09 08:11:43,822 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-09 08:11:43,851 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_e3f76a9a-5399-4729-8539-1928ee9d4caa/bin/utaipan/witness.graphml [2020-12-09 08:11:43,851 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 08:11:43,852 INFO L168 Benchmark]: Toolchain (without parser) took 288138.24 ms. Allocated memory was 100.7 MB in the beginning and 121.6 MB in the end (delta: 21.0 MB). Free memory was 65.1 MB in the beginning and 44.6 MB in the end (delta: 20.5 MB). Peak memory consumption was 40.7 MB. Max. memory is 16.1 GB. [2020-12-09 08:11:43,852 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 100.7 MB. Free memory is still 81.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 08:11:43,853 INFO L168 Benchmark]: CACSL2BoogieTranslator took 174.88 ms. Allocated memory is still 100.7 MB. Free memory was 64.8 MB in the beginning and 77.6 MB in the end (delta: -12.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-09 08:11:43,853 INFO L168 Benchmark]: Boogie Procedure Inliner took 30.05 ms. Allocated memory is still 100.7 MB. Free memory was 77.6 MB in the beginning and 75.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 08:11:43,853 INFO L168 Benchmark]: Boogie Preprocessor took 18.22 ms. Allocated memory is still 100.7 MB. Free memory was 75.9 MB in the beginning and 74.7 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 08:11:43,853 INFO L168 Benchmark]: RCFGBuilder took 301.02 ms. Allocated memory is still 100.7 MB. Free memory was 74.3 MB in the beginning and 55.0 MB in the end (delta: 19.3 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2020-12-09 08:11:43,854 INFO L168 Benchmark]: TraceAbstraction took 287575.90 ms. Allocated memory was 100.7 MB in the beginning and 121.6 MB in the end (delta: 21.0 MB). Free memory was 54.6 MB in the beginning and 47.7 MB in the end (delta: 6.9 MB). Peak memory consumption was 30.6 MB. Max. memory is 16.1 GB. [2020-12-09 08:11:43,854 INFO L168 Benchmark]: Witness Printer took 31.48 ms. Allocated memory is still 121.6 MB. Free memory was 47.7 MB in the beginning and 44.6 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 08:11:43,856 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 100.7 MB. Free memory is still 81.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 174.88 ms. Allocated memory is still 100.7 MB. Free memory was 64.8 MB in the beginning and 77.6 MB in the end (delta: -12.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 30.05 ms. Allocated memory is still 100.7 MB. Free memory was 77.6 MB in the beginning and 75.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 18.22 ms. Allocated memory is still 100.7 MB. Free memory was 75.9 MB in the beginning and 74.7 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 301.02 ms. Allocated memory is still 100.7 MB. Free memory was 74.3 MB in the beginning and 55.0 MB in the end (delta: 19.3 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 287575.90 ms. Allocated memory was 100.7 MB in the beginning and 121.6 MB in the end (delta: 21.0 MB). Free memory was 54.6 MB in the beginning and 47.7 MB in the end (delta: 6.9 MB). Peak memory consumption was 30.6 MB. Max. memory is 16.1 GB. * Witness Printer took 31.48 ms. Allocated memory is still 121.6 MB. Free memory was 47.7 MB in the beginning and 44.6 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 17]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L22] int counter = 0; [L24] short a; [L25] long long n, x, y, z; [L26] a = __VERIFIER_nondet_ushort() [L28] n = 0 [L29] x = 0 [L30] y = 1 [L31] z = 6 VAL [counter=0] [L33] EXPR counter++ VAL [counter=1] [L33] COND TRUE counter++<2 [L15] COND FALSE !(!(cond)) VAL [counter=1] [L15] COND FALSE !(!(cond)) VAL [counter=1] [L15] COND FALSE !(!(cond)) VAL [counter=1] [L15] COND FALSE !(!(cond)) VAL [counter=1] [L15] COND FALSE !(!(cond)) VAL [counter=1] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=1] [L33] EXPR counter++ VAL [counter=2] [L33] COND TRUE counter++<2 [L15] COND FALSE !(!(cond)) VAL [counter=2] [L15] COND FALSE !(!(cond)) VAL [counter=2] [L15] COND FALSE !(!(cond)) VAL [counter=2] [L15] COND FALSE !(!(cond)) VAL [counter=2] [L15] COND FALSE !(!(cond)) VAL [counter=2] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=2] [L33] EXPR counter++ VAL [counter=3] [L33] COND FALSE !(counter++<2) [L15] COND FALSE !(!(cond)) VAL [counter=3] [L15] COND TRUE !(cond) VAL [counter=3] [L17] reach_error() VAL [counter=3] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 49 locations, 11 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 287.4s, OverallIterations: 10, TraceHistogramMax: 3, AutomataDifference: 87.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 267 SDtfs, 956 SDslu, 717 SDs, 0 SdLazy, 821 SolverSat, 607 SolverUnsat, 10 SolverUnknown, 0 SolverNotchecked, 55.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 411 GetRequests, 258 SyntacticMatches, 1 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 993 ImplicationChecksByTransitivity, 226.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=102occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 9 MinimizatonAttempts, 160 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 3.4s InterpolantComputationTime, 186 NumberOfCodeBlocks, 186 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 286 ConstructedInterpolants, 12 QuantifiedInterpolants, 82669 SizeOfPredicates, 45 NumberOfNonLiveVariables, 752 ConjunctsInSsa, 144 ConjunctsInUnsatCore, 17 InterpolantComputations, 10 PerfectInterpolantSequences, 52/106 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...