./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-new/nested-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4147d66c-9d23-4825-b85a-d88799d5e04c/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4147d66c-9d23-4825-b85a-d88799d5e04c/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4147d66c-9d23-4825-b85a-d88799d5e04c/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4147d66c-9d23-4825-b85a-d88799d5e04c/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-new/nested-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4147d66c-9d23-4825-b85a-d88799d5e04c/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4147d66c-9d23-4825-b85a-d88799d5e04c/bin/utaipan-aC7eJsxGYH --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 3baf312ca85439572472b3c02ed304b3157fa97373d6ada535e5a723c6c0219a --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 04:43:34,501 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 04:43:34,503 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 04:43:34,553 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 04:43:34,554 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 04:43:34,558 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 04:43:34,560 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 04:43:34,564 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 04:43:34,567 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 04:43:34,572 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 04:43:34,573 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 04:43:34,574 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 04:43:34,575 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 04:43:34,577 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 04:43:34,579 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 04:43:34,581 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 04:43:34,582 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 04:43:34,583 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 04:43:34,587 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 04:43:34,594 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 04:43:34,596 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 04:43:34,597 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 04:43:34,600 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 04:43:34,601 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 04:43:34,609 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 04:43:34,609 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 04:43:34,610 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 04:43:34,611 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 04:43:34,612 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 04:43:34,613 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 04:43:34,614 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 04:43:34,614 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 04:43:34,616 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 04:43:34,617 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 04:43:34,618 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 04:43:34,619 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 04:43:34,619 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 04:43:34,619 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 04:43:34,620 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 04:43:34,621 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 04:43:34,621 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 04:43:34,622 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4147d66c-9d23-4825-b85a-d88799d5e04c/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-03 04:43:34,664 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 04:43:34,664 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 04:43:34,665 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 04:43:34,666 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 04:43:34,666 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 04:43:34,666 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 04:43:34,666 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 04:43:34,672 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 04:43:34,672 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 04:43:34,673 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 04:43:34,674 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 04:43:34,674 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 04:43:34,674 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 04:43:34,674 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 04:43:34,674 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 04:43:34,675 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 04:43:34,675 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 04:43:34,676 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 04:43:34,676 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 04:43:34,676 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 04:43:34,676 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 04:43:34,676 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 04:43:34,676 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 04:43:34,677 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 04:43:34,677 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 04:43:34,677 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 04:43:34,677 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 04:43:34,677 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 04:43:34,678 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 04:43:34,679 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 04:43:34,679 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:43:34,680 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 04:43:34,680 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 04:43:34,680 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 04:43:34,680 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 04:43:34,680 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 04:43:34,681 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 04:43:34,681 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 04:43:34,681 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 04:43:34,681 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_worker_vcloud-master_on_vcloud-master/run_dir_4147d66c-9d23-4825-b85a-d88799d5e04c/bin/utaipan-aC7eJsxGYH/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4147d66c-9d23-4825-b85a-d88799d5e04c/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3baf312ca85439572472b3c02ed304b3157fa97373d6ada535e5a723c6c0219a [2021-11-03 04:43:34,915 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 04:43:34,935 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 04:43:34,937 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 04:43:34,938 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 04:43:34,939 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 04:43:34,940 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4147d66c-9d23-4825-b85a-d88799d5e04c/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/loop-new/nested-1.i [2021-11-03 04:43:35,007 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4147d66c-9d23-4825-b85a-d88799d5e04c/bin/utaipan-aC7eJsxGYH/data/07ec2e2be/36e3d97cd81f4084b6b7068ea9c8fb27/FLAG39a49cbc1 [2021-11-03 04:43:35,437 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 04:43:35,437 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4147d66c-9d23-4825-b85a-d88799d5e04c/sv-benchmarks/c/loop-new/nested-1.i [2021-11-03 04:43:35,443 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4147d66c-9d23-4825-b85a-d88799d5e04c/bin/utaipan-aC7eJsxGYH/data/07ec2e2be/36e3d97cd81f4084b6b7068ea9c8fb27/FLAG39a49cbc1 [2021-11-03 04:43:35,456 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4147d66c-9d23-4825-b85a-d88799d5e04c/bin/utaipan-aC7eJsxGYH/data/07ec2e2be/36e3d97cd81f4084b6b7068ea9c8fb27 [2021-11-03 04:43:35,459 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 04:43:35,460 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 04:43:35,465 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 04:43:35,472 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 04:43:35,476 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 04:43:35,477 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:43:35" (1/1) ... [2021-11-03 04:43:35,478 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e87922f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:43:35, skipping insertion in model container [2021-11-03 04:43:35,479 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:43:35" (1/1) ... [2021-11-03 04:43:35,485 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 04:43:35,502 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:43:35,680 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4147d66c-9d23-4825-b85a-d88799d5e04c/sv-benchmarks/c/loop-new/nested-1.i[891,904] [2021-11-03 04:43:35,694 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:43:35,708 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 04:43:35,719 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4147d66c-9d23-4825-b85a-d88799d5e04c/sv-benchmarks/c/loop-new/nested-1.i[891,904] [2021-11-03 04:43:35,722 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:43:35,733 INFO L208 MainTranslator]: Completed translation [2021-11-03 04:43:35,734 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:43:35 WrapperNode [2021-11-03 04:43:35,734 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 04:43:35,735 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 04:43:35,735 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 04:43:35,735 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 04:43:35,743 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:43:35" (1/1) ... [2021-11-03 04:43:35,749 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:43:35" (1/1) ... [2021-11-03 04:43:35,767 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 04:43:35,767 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 04:43:35,767 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 04:43:35,768 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 04:43:35,775 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:43:35" (1/1) ... [2021-11-03 04:43:35,775 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:43:35" (1/1) ... [2021-11-03 04:43:35,777 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:43:35" (1/1) ... [2021-11-03 04:43:35,777 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:43:35" (1/1) ... [2021-11-03 04:43:35,780 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:43:35" (1/1) ... [2021-11-03 04:43:35,784 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:43:35" (1/1) ... [2021-11-03 04:43:35,785 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:43:35" (1/1) ... [2021-11-03 04:43:35,787 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 04:43:35,788 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 04:43:35,788 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 04:43:35,788 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 04:43:35,789 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:43:35" (1/1) ... [2021-11-03 04:43:35,800 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:43:35,819 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4147d66c-9d23-4825-b85a-d88799d5e04c/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:43:35,840 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4147d66c-9d23-4825-b85a-d88799d5e04c/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 04:43:35,867 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4147d66c-9d23-4825-b85a-d88799d5e04c/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 04:43:35,885 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-03 04:43:35,885 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 04:43:35,887 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 04:43:35,887 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 04:43:36,129 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 04:43:36,129 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-11-03 04:43:36,131 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:43:36 BoogieIcfgContainer [2021-11-03 04:43:36,132 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 04:43:36,133 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 04:43:36,133 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 04:43:36,137 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 04:43:36,137 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 04:43:35" (1/3) ... [2021-11-03 04:43:36,138 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d815db9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:43:36, skipping insertion in model container [2021-11-03 04:43:36,138 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:43:35" (2/3) ... [2021-11-03 04:43:36,138 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d815db9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:43:36, skipping insertion in model container [2021-11-03 04:43:36,139 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:43:36" (3/3) ... [2021-11-03 04:43:36,140 INFO L111 eAbstractionObserver]: Analyzing ICFG nested-1.i [2021-11-03 04:43:36,145 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 04:43:36,145 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-03 04:43:36,188 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 04:43:36,194 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-03 04:43:36,195 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-03 04:43:36,208 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 10 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:43:36,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-03 04:43:36,213 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:43:36,214 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-03 04:43:36,214 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:43:36,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:43:36,220 INFO L85 PathProgramCache]: Analyzing trace with hash -1854609309, now seen corresponding path program 1 times [2021-11-03 04:43:36,229 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:43:36,230 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938059697] [2021-11-03 04:43:36,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:43:36,234 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:43:36,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:43:36,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:43:36,431 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:43:36,431 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938059697] [2021-11-03 04:43:36,432 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938059697] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:43:36,432 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:43:36,432 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 04:43:36,434 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140966310] [2021-11-03 04:43:36,438 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:43:36,439 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:43:36,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:43:36,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:43:36,459 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 10 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:43:36,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:43:36,535 INFO L93 Difference]: Finished difference Result 21 states and 26 transitions. [2021-11-03 04:43:36,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:43:36,537 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-11-03 04:43:36,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:43:36,544 INFO L225 Difference]: With dead ends: 21 [2021-11-03 04:43:36,544 INFO L226 Difference]: Without dead ends: 10 [2021-11-03 04:43:36,546 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:43:36,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2021-11-03 04:43:36,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2021-11-03 04:43:36,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.25) internal successors, (10), 8 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:43:36,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2021-11-03 04:43:36,586 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 6 [2021-11-03 04:43:36,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:43:36,587 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 10 transitions. [2021-11-03 04:43:36,587 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:43:36,587 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2021-11-03 04:43:36,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-03 04:43:36,588 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:43:36,588 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:43:36,588 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-03 04:43:36,589 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:43:36,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:43:36,590 INFO L85 PathProgramCache]: Analyzing trace with hash 96357918, now seen corresponding path program 1 times [2021-11-03 04:43:36,590 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:43:36,590 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421083558] [2021-11-03 04:43:36,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:43:36,591 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:43:36,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:43:36,648 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:43:36,649 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:43:36,649 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421083558] [2021-11-03 04:43:36,649 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421083558] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:43:36,650 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:43:36,650 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 04:43:36,650 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643642796] [2021-11-03 04:43:36,654 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:43:36,654 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:43:36,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:43:36,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:43:36,656 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:43:36,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:43:36,672 INFO L93 Difference]: Finished difference Result 15 states and 18 transitions. [2021-11-03 04:43:36,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:43:36,673 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-03 04:43:36,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:43:36,673 INFO L225 Difference]: With dead ends: 15 [2021-11-03 04:43:36,674 INFO L226 Difference]: Without dead ends: 10 [2021-11-03 04:43:36,675 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:43:36,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2021-11-03 04:43:36,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2021-11-03 04:43:36,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:43:36,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2021-11-03 04:43:36,678 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 8 [2021-11-03 04:43:36,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:43:36,679 INFO L470 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2021-11-03 04:43:36,679 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:43:36,679 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2021-11-03 04:43:36,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-03 04:43:36,680 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:43:36,680 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:43:36,680 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-03 04:43:36,681 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:43:36,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:43:36,682 INFO L85 PathProgramCache]: Analyzing trace with hash -1311608225, now seen corresponding path program 1 times [2021-11-03 04:43:36,682 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:43:36,682 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638716966] [2021-11-03 04:43:36,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:43:36,683 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:43:36,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:43:36,748 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:43:36,748 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:43:36,748 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638716966] [2021-11-03 04:43:36,749 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638716966] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-03 04:43:36,749 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [842869879] [2021-11-03 04:43:36,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:43:36,750 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:43:36,750 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4147d66c-9d23-4825-b85a-d88799d5e04c/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:43:36,751 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4147d66c-9d23-4825-b85a-d88799d5e04c/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 04:43:36,771 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4147d66c-9d23-4825-b85a-d88799d5e04c/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-03 04:43:36,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:43:36,802 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 04:43:36,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:43:36,915 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:43:36,916 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:43:36,963 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:43:36,963 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [842869879] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:43:36,964 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [998872446] [2021-11-03 04:43:36,984 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-03 04:43:36,985 INFO L166 IcfgInterpreter]: Building call graph [2021-11-03 04:43:36,989 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-03 04:43:36,994 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-03 04:43:36,995 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-03 04:43:37,026 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:43:37,030 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:43:37,037 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:43:37,038 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-11-03 04:43:37,042 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:43:37,044 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:43:37,045 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-03 04:43:37,049 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 108 [2021-11-03 04:43:37,075 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_8|], 10=[|v_#valid_9|]} [2021-11-03 04:43:37,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:43:37,103 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-11-03 04:43:37,105 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:43:37,106 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-03 04:43:37,107 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:43:37,108 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-03 04:43:37,109 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-03 04:43:37,111 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:37,148 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:43:37,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:43:37,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:43:37,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:43:37,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:43:37,164 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-03 04:43:37,165 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:43:37,167 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 04:43:37,168 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:43:37,169 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 04:43:37,169 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-03 04:43:37,170 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:37,185 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:43:37,188 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:43:37,190 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 90 [2021-11-03 04:43:37,191 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-03 04:43:37,191 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:105, output treesize:90 [2021-11-03 04:43:37,205 INFO L180 QuantifierPusher]: treesize reduction 16, result has 87.2 percent of original size [2021-11-03 04:43:37,211 INFO L185 QuantifierPusher]: treesize reduction 3, result has 96.9 percent of original size 95 [2021-11-03 04:43:37,220 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:37,286 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:37,337 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:37,429 INFO L180 QuantifierPusher]: treesize reduction 16, result has 94.0 percent of original size [2021-11-03 04:43:37,450 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 250 [2021-11-03 04:43:37,456 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:37,516 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:37,518 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:37,520 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:37,522 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:37,523 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:37,534 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:37,553 INFO L180 QuantifierPusher]: treesize reduction 30, result has 65.5 percent of original size [2021-11-03 04:43:37,557 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-11-03 04:43:37,565 INFO L180 QuantifierPusher]: treesize reduction 31, result has 62.7 percent of original size [2021-11-03 04:43:37,570 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-11-03 04:43:37,574 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:37,593 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:37,608 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:37,638 INFO L180 QuantifierPusher]: treesize reduction 13, result has 92.9 percent of original size [2021-11-03 04:43:37,648 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 164 [2021-11-03 04:43:37,656 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:43:37,667 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 169 [2021-11-03 04:43:37,672 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:37,711 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:37,712 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:37,714 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:37,716 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:37,718 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:37,735 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:37,742 INFO L180 QuantifierPusher]: treesize reduction 24, result has 71.4 percent of original size [2021-11-03 04:43:37,752 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-11-03 04:43:37,761 INFO L180 QuantifierPusher]: treesize reduction 25, result has 68.8 percent of original size [2021-11-03 04:43:37,764 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-03 04:43:37,767 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:37,781 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:37,782 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:37,783 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:37,785 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:37,790 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:37,797 INFO L180 QuantifierPusher]: treesize reduction 24, result has 71.4 percent of original size [2021-11-03 04:43:37,802 INFO L185 QuantifierPusher]: treesize reduction 3, result has 93.9 percent of original size 46 [2021-11-03 04:43:37,807 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:37,814 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:37,823 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:37,847 INFO L180 QuantifierPusher]: treesize reduction 3, result has 97.6 percent of original size [2021-11-03 04:43:37,851 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 115 [2021-11-03 04:43:37,855 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:37,876 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:37,878 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:37,880 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:37,881 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:37,882 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:37,886 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:37,894 INFO L180 QuantifierPusher]: treesize reduction 24, result has 71.4 percent of original size [2021-11-03 04:43:37,898 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-11-03 04:43:37,905 INFO L180 QuantifierPusher]: treesize reduction 25, result has 68.8 percent of original size [2021-11-03 04:43:37,909 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-03 04:43:37,920 INFO L180 QuantifierPusher]: treesize reduction 24, result has 71.4 percent of original size [2021-11-03 04:43:37,924 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-11-03 04:43:37,927 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:37,935 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:37,955 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:37,973 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:43:37,979 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 126 [2021-11-03 04:43:37,985 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:38,005 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:38,007 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:38,009 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:38,010 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:38,011 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:38,016 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:38,023 INFO L180 QuantifierPusher]: treesize reduction 24, result has 71.4 percent of original size [2021-11-03 04:43:38,026 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-11-03 04:43:38,034 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-03 04:43:38,585 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 04:43:38,585 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-03 04:43:38,585 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2021-11-03 04:43:38,586 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543870378] [2021-11-03 04:43:38,586 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-03 04:43:38,586 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:43:38,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-03 04:43:38,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2021-11-03 04:43:38,588 INFO L87 Difference]: Start difference. First operand 10 states and 11 transitions. Second operand has 10 states, 10 states have (on average 1.6) internal successors, (16), 10 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:43:38,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:43:38,645 INFO L93 Difference]: Finished difference Result 19 states and 24 transitions. [2021-11-03 04:43:38,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-03 04:43:38,645 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.6) internal successors, (16), 10 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-03 04:43:38,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:43:38,646 INFO L225 Difference]: With dead ends: 19 [2021-11-03 04:43:38,646 INFO L226 Difference]: Without dead ends: 13 [2021-11-03 04:43:38,647 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2021-11-03 04:43:38,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-11-03 04:43:38,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-11-03 04:43:38,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 12 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:43:38,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2021-11-03 04:43:38,650 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 9 [2021-11-03 04:43:38,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:43:38,650 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2021-11-03 04:43:38,650 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.6) internal successors, (16), 10 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:43:38,650 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2021-11-03 04:43:38,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-03 04:43:38,651 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:43:38,651 INFO L513 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:43:38,690 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4147d66c-9d23-4825-b85a-d88799d5e04c/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-03 04:43:38,871 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4147d66c-9d23-4825-b85a-d88799d5e04c/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-11-03 04:43:38,871 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:43:38,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:43:38,871 INFO L85 PathProgramCache]: Analyzing trace with hash 2076563038, now seen corresponding path program 2 times [2021-11-03 04:43:38,872 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:43:38,872 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716944982] [2021-11-03 04:43:38,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:43:38,872 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:43:38,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:43:38,981 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:43:38,981 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:43:38,981 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716944982] [2021-11-03 04:43:38,981 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716944982] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-03 04:43:38,982 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1153805972] [2021-11-03 04:43:38,982 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-03 04:43:38,982 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:43:38,982 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4147d66c-9d23-4825-b85a-d88799d5e04c/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:43:38,983 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4147d66c-9d23-4825-b85a-d88799d5e04c/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 04:43:38,999 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4147d66c-9d23-4825-b85a-d88799d5e04c/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-03 04:43:39,028 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-03 04:43:39,028 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 04:43:39,029 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 04:43:39,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:43:39,147 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-03 04:43:39,147 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:43:39,219 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-03 04:43:39,219 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1153805972] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:43:39,219 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [26745581] [2021-11-03 04:43:39,221 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-03 04:43:39,222 INFO L166 IcfgInterpreter]: Building call graph [2021-11-03 04:43:39,222 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-03 04:43:39,222 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-03 04:43:39,222 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-03 04:43:39,228 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:43:39,229 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:43:39,229 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:43:39,230 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-11-03 04:43:39,230 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:43:39,231 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:43:39,231 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-03 04:43:39,233 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 108 [2021-11-03 04:43:39,236 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_9|], 10=[|v_#valid_10|]} [2021-11-03 04:43:39,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:43:39,244 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-11-03 04:43:39,244 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:43:39,245 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-03 04:43:39,245 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:43:39,246 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-03 04:43:39,246 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-03 04:43:39,246 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:39,263 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:43:39,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:43:39,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:43:39,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:43:39,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:43:39,276 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-03 04:43:39,277 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:43:39,279 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 04:43:39,280 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:43:39,281 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 04:43:39,281 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-03 04:43:39,282 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:39,285 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:43:39,287 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:43:39,288 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 90 [2021-11-03 04:43:39,289 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-03 04:43:39,289 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:105, output treesize:90 [2021-11-03 04:43:39,298 INFO L180 QuantifierPusher]: treesize reduction 16, result has 87.2 percent of original size [2021-11-03 04:43:39,301 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 102 [2021-11-03 04:43:39,305 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:39,316 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:39,330 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:39,362 INFO L180 QuantifierPusher]: treesize reduction 13, result has 95.2 percent of original size [2021-11-03 04:43:39,372 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 255 [2021-11-03 04:43:39,376 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:39,408 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:39,409 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:39,410 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:39,411 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:39,412 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:39,417 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:39,424 INFO L180 QuantifierPusher]: treesize reduction 30, result has 65.5 percent of original size [2021-11-03 04:43:39,428 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-11-03 04:43:39,431 INFO L180 QuantifierPusher]: treesize reduction 31, result has 62.7 percent of original size [2021-11-03 04:43:39,434 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-11-03 04:43:39,435 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:39,442 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:39,453 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:39,471 INFO L180 QuantifierPusher]: treesize reduction 16, result has 91.4 percent of original size [2021-11-03 04:43:39,479 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 164 [2021-11-03 04:43:39,483 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:43:39,491 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 169 [2021-11-03 04:43:39,495 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:39,516 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:39,517 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:39,518 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:39,521 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:39,523 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:39,529 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:39,545 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:43:39,551 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 100 [2021-11-03 04:43:39,553 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:39,565 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:39,566 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:39,567 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:39,567 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:39,568 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:39,573 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:39,580 INFO L180 QuantifierPusher]: treesize reduction 24, result has 71.4 percent of original size [2021-11-03 04:43:39,584 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-11-03 04:43:39,589 INFO L180 QuantifierPusher]: treesize reduction 25, result has 68.8 percent of original size [2021-11-03 04:43:39,592 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-03 04:43:39,594 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:39,614 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:39,616 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:39,617 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:39,620 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:39,624 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:39,631 INFO L180 QuantifierPusher]: treesize reduction 24, result has 71.4 percent of original size [2021-11-03 04:43:39,635 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-11-03 04:43:39,637 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:39,644 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:39,651 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:39,666 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:43:39,673 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 126 [2021-11-03 04:43:39,676 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:39,691 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:39,692 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:39,693 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:39,694 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:39,695 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:39,698 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:39,705 INFO L180 QuantifierPusher]: treesize reduction 24, result has 71.4 percent of original size [2021-11-03 04:43:39,708 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-11-03 04:43:39,713 INFO L180 QuantifierPusher]: treesize reduction 25, result has 68.8 percent of original size [2021-11-03 04:43:39,715 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-03 04:43:39,725 INFO L180 QuantifierPusher]: treesize reduction 24, result has 71.4 percent of original size [2021-11-03 04:43:39,728 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-11-03 04:43:39,730 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:39,741 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:39,750 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:39,766 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:43:39,773 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 126 [2021-11-03 04:43:39,776 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:39,793 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:39,794 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:39,795 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:39,796 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:39,797 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:39,800 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:39,810 INFO L180 QuantifierPusher]: treesize reduction 24, result has 71.4 percent of original size [2021-11-03 04:43:39,813 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-11-03 04:43:39,815 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-03 04:43:40,379 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 04:43:40,380 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-03 04:43:40,380 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 5] total 14 [2021-11-03 04:43:40,380 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963939717] [2021-11-03 04:43:40,381 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-03 04:43:40,381 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:43:40,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-03 04:43:40,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=302, Unknown=0, NotChecked=0, Total=380 [2021-11-03 04:43:40,382 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand has 14 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 14 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:43:40,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:43:40,885 INFO L93 Difference]: Finished difference Result 44 states and 56 transitions. [2021-11-03 04:43:40,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-11-03 04:43:40,886 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 14 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-11-03 04:43:40,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:43:40,886 INFO L225 Difference]: With dead ends: 44 [2021-11-03 04:43:40,887 INFO L226 Difference]: Without dead ends: 35 [2021-11-03 04:43:40,888 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 520 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=537, Invalid=1443, Unknown=0, NotChecked=0, Total=1980 [2021-11-03 04:43:40,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-11-03 04:43:40,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2021-11-03 04:43:40,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.1470588235294117) internal successors, (39), 34 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:43:40,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2021-11-03 04:43:40,894 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 12 [2021-11-03 04:43:40,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:43:40,895 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2021-11-03 04:43:40,895 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 14 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:43:40,895 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2021-11-03 04:43:40,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-03 04:43:40,896 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:43:40,896 INFO L513 BasicCegarLoop]: trace histogram [20, 4, 4, 1, 1, 1, 1, 1, 1] [2021-11-03 04:43:40,934 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4147d66c-9d23-4825-b85a-d88799d5e04c/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-03 04:43:41,112 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4147d66c-9d23-4825-b85a-d88799d5e04c/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:43:41,112 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:43:41,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:43:41,112 INFO L85 PathProgramCache]: Analyzing trace with hash -481775261, now seen corresponding path program 3 times [2021-11-03 04:43:41,113 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:43:41,113 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794214283] [2021-11-03 04:43:41,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:43:41,113 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:43:41,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:43:41,230 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 112 proven. 15 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2021-11-03 04:43:41,232 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:43:41,232 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794214283] [2021-11-03 04:43:41,232 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1794214283] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-03 04:43:41,232 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1316537234] [2021-11-03 04:43:41,233 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-03 04:43:41,233 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:43:41,233 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4147d66c-9d23-4825-b85a-d88799d5e04c/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:43:41,234 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4147d66c-9d23-4825-b85a-d88799d5e04c/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 04:43:41,261 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4147d66c-9d23-4825-b85a-d88799d5e04c/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-03 04:43:41,324 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-03 04:43:41,325 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 04:43:41,326 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-03 04:43:41,328 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:43:41,472 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 112 proven. 15 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2021-11-03 04:43:41,472 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:43:41,626 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 112 proven. 15 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2021-11-03 04:43:41,626 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1316537234] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:43:41,626 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [910558460] [2021-11-03 04:43:41,629 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-03 04:43:41,629 INFO L166 IcfgInterpreter]: Building call graph [2021-11-03 04:43:41,629 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-03 04:43:41,629 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-03 04:43:41,630 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-03 04:43:41,635 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:43:41,636 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:43:41,637 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:43:41,639 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-03 04:43:41,640 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:43:41,640 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:43:41,641 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-11-03 04:43:41,642 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 108 [2021-11-03 04:43:41,654 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_10|], 10=[|v_#valid_11|]} [2021-11-03 04:43:41,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:43:41,660 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-11-03 04:43:41,661 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:43:41,661 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-03 04:43:41,662 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:43:41,662 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-03 04:43:41,662 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-03 04:43:41,662 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:41,667 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:43:41,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:43:41,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:43:41,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:43:41,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:43:41,683 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-03 04:43:41,683 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:43:41,686 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 04:43:41,687 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:43:41,688 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 04:43:41,688 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-03 04:43:41,688 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:41,695 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:43:41,697 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:43:41,698 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 90 [2021-11-03 04:43:41,699 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-03 04:43:41,699 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:105, output treesize:90 [2021-11-03 04:43:41,708 INFO L180 QuantifierPusher]: treesize reduction 16, result has 87.2 percent of original size [2021-11-03 04:43:41,711 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 104 [2021-11-03 04:43:41,714 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:41,726 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:41,739 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:41,770 INFO L180 QuantifierPusher]: treesize reduction 5, result has 98.1 percent of original size [2021-11-03 04:43:41,777 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 257 [2021-11-03 04:43:41,781 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:41,811 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:41,813 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:41,813 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:41,815 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:41,816 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:41,820 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:41,826 INFO L180 QuantifierPusher]: treesize reduction 30, result has 65.5 percent of original size [2021-11-03 04:43:41,828 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-11-03 04:43:41,831 INFO L180 QuantifierPusher]: treesize reduction 31, result has 62.7 percent of original size [2021-11-03 04:43:41,836 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-11-03 04:43:41,838 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:41,844 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:41,851 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:41,865 INFO L180 QuantifierPusher]: treesize reduction 16, result has 91.4 percent of original size [2021-11-03 04:43:41,873 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 164 [2021-11-03 04:43:41,876 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:43:41,882 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 173 [2021-11-03 04:43:41,886 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:41,906 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:41,907 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:41,908 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:41,910 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:41,912 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:41,921 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:41,928 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:43:41,930 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 96 [2021-11-03 04:43:41,937 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:43:41,940 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 99 [2021-11-03 04:43:41,943 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:41,962 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:41,963 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:41,964 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:41,965 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:41,966 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:41,969 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:41,974 INFO L180 QuantifierPusher]: treesize reduction 24, result has 71.4 percent of original size [2021-11-03 04:43:41,977 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-11-03 04:43:41,979 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:41,985 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:41,991 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:42,005 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:43:42,009 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 126 [2021-11-03 04:43:42,011 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:42,027 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:42,037 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:42,039 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:42,039 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:42,040 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:42,044 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:42,050 INFO L180 QuantifierPusher]: treesize reduction 24, result has 71.4 percent of original size [2021-11-03 04:43:42,052 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-11-03 04:43:42,055 INFO L180 QuantifierPusher]: treesize reduction 25, result has 68.8 percent of original size [2021-11-03 04:43:42,057 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-03 04:43:42,063 INFO L180 QuantifierPusher]: treesize reduction 24, result has 71.4 percent of original size [2021-11-03 04:43:42,065 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-11-03 04:43:42,067 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:42,072 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:42,078 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:42,091 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:43:42,095 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 126 [2021-11-03 04:43:42,097 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:42,111 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:42,112 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:42,112 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:42,113 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:42,114 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:42,117 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:42,121 INFO L180 QuantifierPusher]: treesize reduction 24, result has 71.4 percent of original size [2021-11-03 04:43:42,124 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-11-03 04:43:42,126 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-03 04:43:42,619 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 04:43:42,619 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-03 04:43:42,620 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2021-11-03 04:43:42,620 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537302245] [2021-11-03 04:43:42,620 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-03 04:43:42,620 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:43:42,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-03 04:43:42,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=463, Unknown=0, NotChecked=0, Total=650 [2021-11-03 04:43:42,621 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand has 20 states, 20 states have (on average 1.5) internal successors, (30), 20 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:43:42,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:43:42,729 INFO L93 Difference]: Finished difference Result 80 states and 107 transitions. [2021-11-03 04:43:42,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-03 04:43:42,731 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.5) internal successors, (30), 20 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-11-03 04:43:42,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:43:42,732 INFO L225 Difference]: With dead ends: 80 [2021-11-03 04:43:42,732 INFO L226 Difference]: Without dead ends: 55 [2021-11-03 04:43:42,733 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 84 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 358 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=247, Invalid=623, Unknown=0, NotChecked=0, Total=870 [2021-11-03 04:43:42,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2021-11-03 04:43:42,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2021-11-03 04:43:42,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 54 states have (on average 1.0925925925925926) internal successors, (59), 54 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:43:42,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 59 transitions. [2021-11-03 04:43:42,757 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 59 transitions. Word has length 34 [2021-11-03 04:43:42,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:43:42,758 INFO L470 AbstractCegarLoop]: Abstraction has 55 states and 59 transitions. [2021-11-03 04:43:42,758 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.5) internal successors, (30), 20 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:43:42,758 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 59 transitions. [2021-11-03 04:43:42,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-03 04:43:42,763 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:43:42,763 INFO L513 BasicCegarLoop]: trace histogram [40, 4, 4, 1, 1, 1, 1, 1, 1] [2021-11-03 04:43:42,803 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4147d66c-9d23-4825-b85a-d88799d5e04c/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-03 04:43:42,987 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4147d66c-9d23-4825-b85a-d88799d5e04c/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:43:42,987 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:43:42,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:43:42,988 INFO L85 PathProgramCache]: Analyzing trace with hash 1382072015, now seen corresponding path program 4 times [2021-11-03 04:43:42,988 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:43:42,988 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944768871] [2021-11-03 04:43:42,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:43:42,988 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:43:43,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:43:43,191 INFO L134 CoverageAnalysis]: Checked inductivity of 956 backedges. 0 proven. 736 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2021-11-03 04:43:43,191 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:43:43,191 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944768871] [2021-11-03 04:43:43,191 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944768871] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-03 04:43:43,192 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [713683388] [2021-11-03 04:43:43,192 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-03 04:43:43,192 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:43:43,192 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4147d66c-9d23-4825-b85a-d88799d5e04c/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:43:43,193 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4147d66c-9d23-4825-b85a-d88799d5e04c/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 04:43:43,212 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4147d66c-9d23-4825-b85a-d88799d5e04c/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-03 04:43:43,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:43:43,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 04:43:43,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:43:43,675 INFO L134 CoverageAnalysis]: Checked inductivity of 956 backedges. 0 proven. 736 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2021-11-03 04:43:43,676 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:43:43,880 INFO L134 CoverageAnalysis]: Checked inductivity of 956 backedges. 0 proven. 736 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2021-11-03 04:43:43,881 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [713683388] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:43:43,881 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1049156392] [2021-11-03 04:43:43,883 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-03 04:43:43,883 INFO L166 IcfgInterpreter]: Building call graph [2021-11-03 04:43:43,883 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-03 04:43:43,884 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-03 04:43:43,884 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-03 04:43:43,890 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:43:43,891 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:43:43,892 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:43:43,892 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-03 04:43:43,893 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:43:43,893 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:43:43,893 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-11-03 04:43:43,895 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 108 [2021-11-03 04:43:43,897 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_11|], 10=[|v_#valid_12|]} [2021-11-03 04:43:43,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:43:43,904 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-11-03 04:43:43,905 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:43:43,905 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-03 04:43:43,906 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:43:43,906 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-03 04:43:43,906 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-03 04:43:43,907 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:43,909 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:43:43,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:43:43,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:43:43,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:43:43,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:43:43,920 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-03 04:43:43,920 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:43:43,922 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 04:43:43,923 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:43:43,923 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 04:43:43,923 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-03 04:43:43,924 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:43,926 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:43:43,927 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:43:43,928 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 90 [2021-11-03 04:43:43,929 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-03 04:43:43,929 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:105, output treesize:90 [2021-11-03 04:43:43,937 INFO L180 QuantifierPusher]: treesize reduction 16, result has 87.2 percent of original size [2021-11-03 04:43:43,943 INFO L185 QuantifierPusher]: treesize reduction 3, result has 96.9 percent of original size 95 [2021-11-03 04:43:43,945 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:43,954 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:43,964 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:43,986 INFO L180 QuantifierPusher]: treesize reduction 16, result has 94.0 percent of original size [2021-11-03 04:43:43,991 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 250 [2021-11-03 04:43:43,995 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:44,018 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:44,020 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:44,021 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:44,022 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:44,023 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:44,026 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:44,031 INFO L180 QuantifierPusher]: treesize reduction 30, result has 65.5 percent of original size [2021-11-03 04:43:44,033 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-11-03 04:43:44,036 INFO L180 QuantifierPusher]: treesize reduction 31, result has 62.7 percent of original size [2021-11-03 04:43:44,037 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-11-03 04:43:44,039 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:44,046 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:44,055 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:44,070 INFO L180 QuantifierPusher]: treesize reduction 13, result has 92.9 percent of original size [2021-11-03 04:43:44,075 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 164 [2021-11-03 04:43:44,079 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:43:44,086 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 173 [2021-11-03 04:43:44,089 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:44,108 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:44,109 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:44,110 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:44,111 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:44,112 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:44,115 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:44,143 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:43:44,148 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 96 [2021-11-03 04:43:44,152 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:43:44,155 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 99 [2021-11-03 04:43:44,158 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:44,170 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:44,171 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:44,171 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:44,172 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:44,173 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:44,175 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:44,180 INFO L180 QuantifierPusher]: treesize reduction 24, result has 71.4 percent of original size [2021-11-03 04:43:44,183 INFO L185 QuantifierPusher]: treesize reduction 3, result has 93.9 percent of original size 46 [2021-11-03 04:43:44,185 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:44,191 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:44,197 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:44,211 INFO L180 QuantifierPusher]: treesize reduction 3, result has 97.6 percent of original size [2021-11-03 04:43:44,215 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 115 [2021-11-03 04:43:44,218 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:44,230 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:44,231 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:44,232 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:44,233 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:44,234 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:44,239 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:44,244 INFO L180 QuantifierPusher]: treesize reduction 24, result has 71.4 percent of original size [2021-11-03 04:43:44,246 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-11-03 04:43:44,250 INFO L180 QuantifierPusher]: treesize reduction 25, result has 68.8 percent of original size [2021-11-03 04:43:44,252 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-03 04:43:44,260 INFO L180 QuantifierPusher]: treesize reduction 24, result has 71.4 percent of original size [2021-11-03 04:43:44,262 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-11-03 04:43:44,265 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:44,271 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:44,278 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:44,289 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:43:44,292 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 126 [2021-11-03 04:43:44,296 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:44,310 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:44,311 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:44,312 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:44,313 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:44,314 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:44,317 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:44,322 INFO L180 QuantifierPusher]: treesize reduction 24, result has 71.4 percent of original size [2021-11-03 04:43:44,325 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-11-03 04:43:44,327 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-03 04:43:44,850 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 04:43:44,851 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-03 04:43:44,851 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2021-11-03 04:43:44,851 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072665976] [2021-11-03 04:43:44,852 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-03 04:43:44,852 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:43:44,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-03 04:43:44,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=426, Unknown=0, NotChecked=0, Total=600 [2021-11-03 04:43:44,853 INFO L87 Difference]: Start difference. First operand 55 states and 59 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 19 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:43:44,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:43:44,990 INFO L93 Difference]: Finished difference Result 130 states and 145 transitions. [2021-11-03 04:43:44,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-03 04:43:44,990 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 19 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2021-11-03 04:43:44,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:43:44,992 INFO L225 Difference]: With dead ends: 130 [2021-11-03 04:43:44,992 INFO L226 Difference]: Without dead ends: 127 [2021-11-03 04:43:44,993 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 327 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=249, Invalid=621, Unknown=0, NotChecked=0, Total=870 [2021-11-03 04:43:44,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2021-11-03 04:43:45,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2021-11-03 04:43:45,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 126 states have (on average 1.0873015873015872) internal successors, (137), 126 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:43:45,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 137 transitions. [2021-11-03 04:43:45,012 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 137 transitions. Word has length 54 [2021-11-03 04:43:45,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:43:45,013 INFO L470 AbstractCegarLoop]: Abstraction has 127 states and 137 transitions. [2021-11-03 04:43:45,013 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 19 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:43:45,013 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 137 transitions. [2021-11-03 04:43:45,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-11-03 04:43:45,015 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:43:45,015 INFO L513 BasicCegarLoop]: trace histogram [100, 10, 10, 1, 1, 1, 1, 1, 1] [2021-11-03 04:43:45,055 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4147d66c-9d23-4825-b85a-d88799d5e04c/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-03 04:43:45,239 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4147d66c-9d23-4825-b85a-d88799d5e04c/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable157 [2021-11-03 04:43:45,239 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:43:45,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:43:45,239 INFO L85 PathProgramCache]: Analyzing trace with hash -10858127, now seen corresponding path program 5 times [2021-11-03 04:43:45,240 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:43:45,240 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44466202] [2021-11-03 04:43:45,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:43:45,240 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:43:45,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:43:49,593 INFO L134 CoverageAnalysis]: Checked inductivity of 6050 backedges. 5922 proven. 119 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-03 04:43:49,594 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:43:49,594 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44466202] [2021-11-03 04:43:49,594 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44466202] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-03 04:43:49,594 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1522916544] [2021-11-03 04:43:49,594 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-03 04:43:49,595 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:43:49,595 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4147d66c-9d23-4825-b85a-d88799d5e04c/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:43:49,596 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4147d66c-9d23-4825-b85a-d88799d5e04c/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 04:43:49,602 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4147d66c-9d23-4825-b85a-d88799d5e04c/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-03 04:43:49,948 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 60 check-sat command(s) [2021-11-03 04:43:49,949 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 04:43:49,953 INFO L263 TraceCheckSpWp]: Trace formula consists of 599 conjuncts, 104 conjunts are in the unsatisfiable core [2021-11-03 04:43:49,959 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:43:50,468 INFO L134 CoverageAnalysis]: Checked inductivity of 6050 backedges. 6041 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-03 04:43:50,468 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:43:50,993 INFO L134 CoverageAnalysis]: Checked inductivity of 6050 backedges. 6041 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-03 04:43:50,993 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1522916544] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:43:50,993 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-11-03 04:43:50,994 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [103, 103] imperfect sequences [103] total 105 [2021-11-03 04:43:50,994 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617829138] [2021-11-03 04:43:50,995 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 104 states [2021-11-03 04:43:50,995 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:43:50,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2021-11-03 04:43:51,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5261, Invalid=5869, Unknown=0, NotChecked=0, Total=11130 [2021-11-03 04:43:51,006 INFO L87 Difference]: Start difference. First operand 127 states and 137 transitions. Second operand has 104 states, 104 states have (on average 1.2115384615384615) internal successors, (126), 103 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:43:52,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:43:52,281 INFO L93 Difference]: Finished difference Result 5122 states and 5582 transitions. [2021-11-03 04:43:52,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2021-11-03 04:43:52,282 INFO L78 Accepts]: Start accepts. Automaton has has 104 states, 104 states have (on average 1.2115384615384615) internal successors, (126), 103 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2021-11-03 04:43:52,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:43:52,283 INFO L225 Difference]: With dead ends: 5122 [2021-11-03 04:43:52,283 INFO L226 Difference]: Without dead ends: 0 [2021-11-03 04:43:52,298 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 248 SyntacticMatches, 1 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 497 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=5366, Invalid=5976, Unknown=0, NotChecked=0, Total=11342 [2021-11-03 04:43:52,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-03 04:43:52,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-03 04:43:52,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:43:52,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-03 04:43:52,299 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 126 [2021-11-03 04:43:52,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:43:52,299 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-03 04:43:52,300 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 104 states, 104 states have (on average 1.2115384615384615) internal successors, (126), 103 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:43:52,300 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-03 04:43:52,300 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-03 04:43:52,302 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 04:43:52,329 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4147d66c-9d23-4825-b85a-d88799d5e04c/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-03 04:43:52,517 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable207,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4147d66c-9d23-4825-b85a-d88799d5e04c/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:43:52,519 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-03 04:43:52,523 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:43:52,541 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:44:28,946 WARN L207 SmtUtils]: Spent 36.40 s on a formula simplification. DAG size of input: 4903 DAG size of output: 1178 [2021-11-03 04:44:28,966 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:44:28,969 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:44:55,682 WARN L207 SmtUtils]: Spent 25.52 s on a formula simplification. DAG size of input: 1178 DAG size of output: 347 [2021-11-03 04:45:00,707 WARN L207 SmtUtils]: Spent 5.01 s on a formula simplification. DAG size of input: 632 DAG size of output: 58 [2021-11-03 04:45:00,710 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-03 04:45:00,710 INFO L857 garLoopResultBuilder]: For program point L29(line 29) no Hoare annotation was computed. [2021-11-03 04:45:00,710 INFO L853 garLoopResultBuilder]: At program point L31-3(lines 31 35) the Hoare annotation is: (let ((.cse0 (<= 10 ULTIMATE.start_main_~m~0)) (.cse1 (<= 10 ULTIMATE.start_main_~n~0))) (or (and .cse0 .cse1 (<= 60 ULTIMATE.start_main_~k~0) (< (+ ULTIMATE.start_main_~i~0 3) ULTIMATE.start_main_~n~0)) (and .cse0 .cse1 (<= 100 ULTIMATE.start_main_~k~0)) (and .cse0 .cse1 (< (+ ULTIMATE.start_main_~i~0 1) ULTIMATE.start_main_~n~0) (<= 80 ULTIMATE.start_main_~k~0)) (and .cse0 .cse1 (<= 20 ULTIMATE.start_main_~k~0) (<= ULTIMATE.start_main_~i~0 2)) (and .cse0 .cse1 (<= ULTIMATE.start_main_~i~0 4) (<= 40 ULTIMATE.start_main_~k~0)) (and .cse0 .cse1 (<= 90 ULTIMATE.start_main_~k~0) (< ULTIMATE.start_main_~i~0 ULTIMATE.start_main_~n~0)) (and .cse0 (<= 0 ULTIMATE.start_main_~k~0) .cse1 (= ULTIMATE.start_main_~i~0 0)) (and .cse0 (< (+ ULTIMATE.start_main_~i~0 2) ULTIMATE.start_main_~n~0) .cse1 (<= 70 ULTIMATE.start_main_~k~0)) (and .cse0 (<= ULTIMATE.start_main_~i~0 1) .cse1 (<= 10 ULTIMATE.start_main_~k~0)) (and .cse0 .cse1 (< (+ ULTIMATE.start_main_~i~0 4) ULTIMATE.start_main_~n~0) (<= 50 ULTIMATE.start_main_~k~0)) (and .cse0 .cse1 (<= 30 ULTIMATE.start_main_~k~0) (<= ULTIMATE.start_main_~i~0 3)))) [2021-11-03 04:45:00,710 INFO L857 garLoopResultBuilder]: For program point L19(line 19) no Hoare annotation was computed. [2021-11-03 04:45:00,711 INFO L857 garLoopResultBuilder]: For program point L30(line 30) no Hoare annotation was computed. [2021-11-03 04:45:00,711 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-03 04:45:00,712 INFO L853 garLoopResultBuilder]: At program point L32-3(lines 32 34) the Hoare annotation is: (let ((.cse2 (<= 20 ULTIMATE.start_main_~k~0)) (.cse24 (<= 80 ULTIMATE.start_main_~k~0)) (.cse21 (<= 30 ULTIMATE.start_main_~k~0)) (.cse26 (<= 50 ULTIMATE.start_main_~k~0)) (.cse29 (<= 90 ULTIMATE.start_main_~k~0)) (.cse28 (<= 10 ULTIMATE.start_main_~k~0)) (.cse14 (<= ULTIMATE.start_main_~j~0 5)) (.cse11 (<= ULTIMATE.start_main_~j~0 3)) (.cse16 (< ULTIMATE.start_main_~i~0 ULTIMATE.start_main_~n~0)) (.cse17 (<= 40 ULTIMATE.start_main_~k~0)) (.cse30 (<= 60 ULTIMATE.start_main_~k~0)) (.cse5 (< (+ ULTIMATE.start_main_~i~0 3) ULTIMATE.start_main_~n~0)) (.cse19 (<= ULTIMATE.start_main_~j~0 1)) (.cse8 (< ULTIMATE.start_main_~j~0 ULTIMATE.start_main_~m~0)) (.cse22 (< (+ ULTIMATE.start_main_~i~0 4) ULTIMATE.start_main_~n~0)) (.cse13 (< (+ ULTIMATE.start_main_~i~0 2) ULTIMATE.start_main_~n~0)) (.cse23 (<= 70 ULTIMATE.start_main_~k~0)) (.cse4 (= ULTIMATE.start_main_~j~0 0)) (.cse25 (<= ULTIMATE.start_main_~i~0 4)) (.cse15 (< (+ ULTIMATE.start_main_~j~0 2) ULTIMATE.start_main_~m~0)) (.cse6 (< (+ ULTIMATE.start_main_~j~0 3) ULTIMATE.start_main_~m~0)) (.cse3 (<= ULTIMATE.start_main_~i~0 2)) (.cse20 (= ULTIMATE.start_main_~i~0 0)) (.cse7 (<= ULTIMATE.start_main_~i~0 1)) (.cse27 (<= ULTIMATE.start_main_~j~0 2)) (.cse9 (< (+ ULTIMATE.start_main_~i~0 1) ULTIMATE.start_main_~n~0)) (.cse12 (< (+ ULTIMATE.start_main_~j~0 1) ULTIMATE.start_main_~m~0)) (.cse0 (<= 10 ULTIMATE.start_main_~m~0)) (.cse1 (<= 10 ULTIMATE.start_main_~n~0)) (.cse18 (<= ULTIMATE.start_main_~i~0 3)) (.cse10 (<= ULTIMATE.start_main_~j~0 4))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4) (and .cse0 .cse1 .cse5 .cse6 (<= 66 ULTIMATE.start_main_~k~0)) (and .cse0 .cse7 .cse8 .cse1 (<= 19 ULTIMATE.start_main_~k~0)) (and .cse0 .cse1 (<= 84 ULTIMATE.start_main_~k~0) .cse9 .cse10) (and .cse0 .cse7 .cse1 .cse11 (<= 13 ULTIMATE.start_main_~k~0)) (and .cse0 .cse7 .cse1 (<= 18 ULTIMATE.start_main_~k~0) .cse12) (and .cse0 .cse7 .cse1 (<= 14 ULTIMATE.start_main_~k~0) .cse10) (and .cse0 .cse13 .cse1 (<= 75 ULTIMATE.start_main_~k~0) .cse14) (and .cse0 .cse13 .cse1 (<= 77 ULTIMATE.start_main_~k~0) .cse15) (and .cse0 .cse1 .cse16 (<= 94 ULTIMATE.start_main_~k~0) .cse10) (and .cse0 .cse1 (<= 97 ULTIMATE.start_main_~k~0) .cse15 .cse16) (and .cse0 .cse1 (<= 93 ULTIMATE.start_main_~k~0) .cse16 .cse11) (and .cse0 .cse7 .cse1 .cse6 (<= 16 ULTIMATE.start_main_~k~0)) (and .cse0 .cse1 .cse17 .cse18) (and .cse0 .cse19 .cse13 .cse1 (<= 71 ULTIMATE.start_main_~k~0)) (and (<= 36 ULTIMATE.start_main_~k~0) .cse0 .cse1 .cse6 .cse18) (and .cse0 .cse1 (<= 3 ULTIMATE.start_main_~k~0) .cse11 .cse20) (and .cse0 .cse1 .cse21 .cse18 .cse4) (and .cse0 .cse1 .cse22 (<= 58 ULTIMATE.start_main_~k~0) .cse12) (and .cse0 .cse1 .cse14 (<= 85 ULTIMATE.start_main_~k~0) .cse9) (and .cse0 .cse1 .cse23 .cse5) (and .cse0 .cse1 .cse9 .cse4 .cse24) (and .cse0 .cse19 .cse1 .cse9 (<= 81 ULTIMATE.start_main_~k~0)) (and .cse0 .cse1 .cse25 .cse26) (and .cse0 .cse7 .cse1 .cse14 (<= 15 ULTIMATE.start_main_~k~0)) (and .cse0 .cse19 .cse1 .cse25 (<= 41 ULTIMATE.start_main_~k~0)) (and .cse0 .cse19 .cse1 (<= 21 ULTIMATE.start_main_~k~0) .cse3) (and .cse0 .cse1 (<= 25 ULTIMATE.start_main_~k~0) .cse14 .cse3) (and .cse0 .cse1 (<= 83 ULTIMATE.start_main_~k~0) .cse11 .cse9) (and .cse0 .cse1 (<= 82 ULTIMATE.start_main_~k~0) .cse27 .cse9) (and .cse0 .cse7 .cse1 .cse28 .cse4) (and .cse0 .cse1 .cse15 (<= 37 ULTIMATE.start_main_~k~0) .cse18) (and .cse0 .cse8 .cse1 .cse25 (<= 49 ULTIMATE.start_main_~k~0)) (and .cse0 .cse1 .cse25 .cse27 (<= 42 ULTIMATE.start_main_~k~0)) (and .cse0 .cse1 (<= 68 ULTIMATE.start_main_~k~0) .cse5 .cse12) (and .cse0 .cse7 .cse1 .cse15 (<= 17 ULTIMATE.start_main_~k~0)) (and .cse0 .cse13 .cse1 (<= 78 ULTIMATE.start_main_~k~0) .cse12) (and .cse0 .cse1 .cse5 .cse27 (<= 62 ULTIMATE.start_main_~k~0)) (and .cse0 .cse1 .cse11 (<= 33 ULTIMATE.start_main_~k~0) .cse18) (and .cse0 .cse1 .cse6 (<= 6 ULTIMATE.start_main_~k~0) .cse20) (and .cse0 .cse1 (<= 98 ULTIMATE.start_main_~k~0) .cse16 .cse12) (and .cse0 .cse7 .cse1 .cse2) (and .cse0 (<= 0 ULTIMATE.start_main_~k~0) .cse1 .cse20 .cse4) (and (<= 8 ULTIMATE.start_main_~k~0) .cse0 .cse1 .cse20 .cse12) (and .cse0 .cse13 .cse1 .cse24) (and .cse0 .cse1 (<= 5 ULTIMATE.start_main_~k~0) .cse14 .cse20) (and .cse0 .cse1 .cse25 (<= 44 ULTIMATE.start_main_~k~0) .cse10) (and .cse0 (<= 53 ULTIMATE.start_main_~k~0) .cse1 .cse22 .cse11) (and .cse0 .cse1 .cse22 (<= 54 ULTIMATE.start_main_~k~0) .cse10) (and .cse0 .cse1 (<= 23 ULTIMATE.start_main_~k~0) .cse11 .cse3) (and .cse0 .cse19 .cse1 (<= 1 ULTIMATE.start_main_~k~0) .cse20) (and .cse0 .cse1 .cse22 .cse27 (<= 52 ULTIMATE.start_main_~k~0)) (and .cse0 .cse1 (<= 65 ULTIMATE.start_main_~k~0) .cse5 .cse14) (and .cse0 .cse1 .cse29 .cse9) (and .cse0 .cse1 .cse30 .cse22) (and .cse0 .cse1 .cse14 .cse18 (<= 35 ULTIMATE.start_main_~k~0)) (and .cse0 .cse1 .cse21 .cse3) (and .cse0 .cse19 .cse1 .cse18 (<= 31 ULTIMATE.start_main_~k~0)) (and .cse0 .cse1 (<= 96 ULTIMATE.start_main_~k~0) .cse16 .cse6) (and .cse0 .cse1 .cse15 .cse3 (<= 27 ULTIMATE.start_main_~k~0)) (and .cse0 .cse8 .cse1 (<= 89 ULTIMATE.start_main_~k~0) .cse9) (and .cse0 (<= 92 ULTIMATE.start_main_~k~0) .cse1 .cse16 .cse27) (and .cse0 .cse8 .cse1 (<= 69 ULTIMATE.start_main_~k~0) .cse5) (and .cse0 .cse1 .cse22 .cse26 .cse4) (and .cse0 .cse1 .cse25 .cse11 (<= 43 ULTIMATE.start_main_~k~0)) (and .cse0 (<= 79 ULTIMATE.start_main_~k~0) .cse8 .cse13 .cse1) (and .cse0 .cse1 .cse25 .cse6 (<= 46 ULTIMATE.start_main_~k~0)) (and .cse0 (<= 63 ULTIMATE.start_main_~k~0) .cse1 .cse5 .cse11) (and .cse0 .cse1 (<= 38 ULTIMATE.start_main_~k~0) .cse18 .cse12) (and .cse0 .cse8 .cse1 (<= 59 ULTIMATE.start_main_~k~0) .cse22) (and .cse0 .cse1 .cse22 (<= 56 ULTIMATE.start_main_~k~0) .cse6) (and .cse0 .cse1 .cse29 .cse16 .cse4) (and .cse0 .cse19 .cse1 (<= 61 ULTIMATE.start_main_~k~0) .cse5) (and .cse0 .cse19 .cse1 .cse22 (<= 51 ULTIMATE.start_main_~k~0)) (and .cse0 .cse1 .cse15 (<= 7 ULTIMATE.start_main_~k~0) .cse20) (and .cse0 .cse1 (<= 32 ULTIMATE.start_main_~k~0) .cse18 .cse27) (and .cse0 .cse1 (<= 2 ULTIMATE.start_main_~k~0) .cse20 .cse27) (and (<= 87 ULTIMATE.start_main_~k~0) .cse0 .cse1 .cse15 .cse9) (and .cse0 .cse8 .cse1 .cse16 (<= 99 ULTIMATE.start_main_~k~0)) (and .cse0 .cse19 .cse1 (<= 91 ULTIMATE.start_main_~k~0) .cse16) (and .cse0 .cse8 .cse1 (<= 39 ULTIMATE.start_main_~k~0) .cse18) (and .cse0 .cse1 (<= 55 ULTIMATE.start_main_~k~0) .cse22 .cse14) (and .cse0 .cse1 .cse6 (<= 86 ULTIMATE.start_main_~k~0) .cse9) (and .cse0 .cse1 .cse25 .cse14 (<= 45 ULTIMATE.start_main_~k~0)) (and .cse0 .cse1 (<= 22 ULTIMATE.start_main_~k~0) .cse3 .cse27) (and .cse0 .cse1 (<= 28 ULTIMATE.start_main_~k~0) .cse3 .cse12) (and .cse0 .cse1 .cse20 .cse28) (and .cse0 .cse8 .cse1 (<= 9 ULTIMATE.start_main_~k~0) .cse20) (and .cse0 .cse1 .cse16 .cse14 (<= 95 ULTIMATE.start_main_~k~0)) (and .cse0 .cse13 .cse1 .cse11 (<= 73 ULTIMATE.start_main_~k~0)) (and .cse0 .cse1 (<= 100 ULTIMATE.start_main_~k~0) .cse16) (and .cse0 .cse13 .cse1 (<= 74 ULTIMATE.start_main_~k~0) .cse10) (and .cse0 .cse1 .cse5 .cse15 (<= 67 ULTIMATE.start_main_~k~0)) (and .cse0 .cse13 .cse1 (<= 72 ULTIMATE.start_main_~k~0) .cse27) (and .cse0 .cse1 .cse25 .cse17 .cse4) (and .cse0 .cse1 (<= 48 ULTIMATE.start_main_~k~0) .cse25 .cse12) (and .cse0 .cse1 .cse30 .cse5 .cse4) (and .cse0 .cse1 .cse5 (<= 64 ULTIMATE.start_main_~k~0) .cse10) (and .cse0 .cse13 .cse1 .cse6 (<= 76 ULTIMATE.start_main_~k~0)) (and .cse0 .cse7 .cse19 .cse1 (<= 11 ULTIMATE.start_main_~k~0)) (and (<= 29 ULTIMATE.start_main_~k~0) .cse0 .cse8 .cse1 .cse3) (and .cse0 .cse1 (<= 57 ULTIMATE.start_main_~k~0) .cse22 .cse15) (and .cse0 .cse13 .cse1 .cse23 .cse4) (and .cse0 .cse1 .cse25 .cse15 (<= 47 ULTIMATE.start_main_~k~0)) (and .cse0 .cse1 (<= 24 ULTIMATE.start_main_~k~0) .cse3 .cse10) (and .cse0 .cse1 .cse6 .cse3 (<= 26 ULTIMATE.start_main_~k~0)) (and .cse0 (<= 4 ULTIMATE.start_main_~k~0) .cse1 .cse20 .cse10) (and .cse0 .cse7 .cse1 (<= 12 ULTIMATE.start_main_~k~0) .cse27) (and .cse0 .cse1 (<= 88 ULTIMATE.start_main_~k~0) .cse9 .cse12) (and .cse0 .cse1 .cse18 .cse10 (<= 34 ULTIMATE.start_main_~k~0)))) [2021-11-03 04:45:00,712 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-11-03 04:45:00,712 INFO L857 garLoopResultBuilder]: For program point L18(lines 18 20) no Hoare annotation was computed. [2021-11-03 04:45:00,712 INFO L853 garLoopResultBuilder]: At program point L18-2(lines 17 22) the Hoare annotation is: (<= 10 ULTIMATE.start_main_~n~0) [2021-11-03 04:45:00,713 INFO L860 garLoopResultBuilder]: At program point L37(lines 24 38) the Hoare annotation is: true [2021-11-03 04:45:00,716 INFO L731 BasicCegarLoop]: Path program histogram: [5, 1, 1] [2021-11-03 04:45:00,717 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-03 04:45:00,783 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 04:45:00 BoogieIcfgContainer [2021-11-03 04:45:00,783 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-03 04:45:00,784 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-03 04:45:00,784 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-03 04:45:00,784 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-03 04:45:00,785 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:43:36" (3/4) ... [2021-11-03 04:45:00,788 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-03 04:45:00,796 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2021-11-03 04:45:00,797 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-11-03 04:45:00,797 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-03 04:45:00,797 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-03 04:45:00,848 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4147d66c-9d23-4825-b85a-d88799d5e04c/bin/utaipan-aC7eJsxGYH/witness.graphml [2021-11-03 04:45:00,848 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-03 04:45:00,849 INFO L168 Benchmark]: Toolchain (without parser) took 85388.43 ms. Allocated memory was 123.7 MB in the beginning and 2.4 GB in the end (delta: 2.3 GB). Free memory was 90.2 MB in the beginning and 1.8 GB in the end (delta: -1.7 GB). Peak memory consumption was 664.0 MB. Max. memory is 16.1 GB. [2021-11-03 04:45:00,850 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 83.9 MB. Free memory was 38.2 MB in the beginning and 38.1 MB in the end (delta: 44.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 04:45:00,850 INFO L168 Benchmark]: CACSL2BoogieTranslator took 268.77 ms. Allocated memory is still 123.7 MB. Free memory was 89.8 MB in the beginning and 98.7 MB in the end (delta: -8.9 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-11-03 04:45:00,850 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.90 ms. Allocated memory is still 123.7 MB. Free memory was 98.7 MB in the beginning and 97.3 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 04:45:00,851 INFO L168 Benchmark]: Boogie Preprocessor took 19.55 ms. Allocated memory is still 123.7 MB. Free memory was 97.3 MB in the beginning and 96.3 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 04:45:00,851 INFO L168 Benchmark]: RCFGBuilder took 344.21 ms. Allocated memory is still 123.7 MB. Free memory was 96.3 MB in the beginning and 85.2 MB in the end (delta: 11.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-11-03 04:45:00,851 INFO L168 Benchmark]: TraceAbstraction took 84650.07 ms. Allocated memory was 123.7 MB in the beginning and 2.4 GB in the end (delta: 2.3 GB). Free memory was 84.8 MB in the beginning and 1.8 GB in the end (delta: -1.7 GB). Peak memory consumption was 1.5 GB. Max. memory is 16.1 GB. [2021-11-03 04:45:00,852 INFO L168 Benchmark]: Witness Printer took 64.46 ms. Allocated memory is still 2.4 GB. Free memory was 1.8 GB in the beginning and 1.8 GB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-03 04:45:00,854 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 83.9 MB. Free memory was 38.2 MB in the beginning and 38.1 MB in the end (delta: 44.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 268.77 ms. Allocated memory is still 123.7 MB. Free memory was 89.8 MB in the beginning and 98.7 MB in the end (delta: -8.9 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 31.90 ms. Allocated memory is still 123.7 MB. Free memory was 98.7 MB in the beginning and 97.3 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 19.55 ms. Allocated memory is still 123.7 MB. Free memory was 97.3 MB in the beginning and 96.3 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 344.21 ms. Allocated memory is still 123.7 MB. Free memory was 96.3 MB in the beginning and 85.2 MB in the end (delta: 11.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 84650.07 ms. Allocated memory was 123.7 MB in the beginning and 2.4 GB in the end (delta: 2.3 GB). Free memory was 84.8 MB in the beginning and 1.8 GB in the end (delta: -1.7 GB). Peak memory consumption was 1.5 GB. Max. memory is 16.1 GB. * Witness Printer took 64.46 ms. Allocated memory is still 2.4 GB. Free memory was 1.8 GB in the beginning and 1.8 GB 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: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 84.5s, OverallIterations: 7, TraceHistogramMax: 100, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 2.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 68.1s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 230 SDtfs, 309 SDslu, 892 SDs, 0 SdLazy, 695 SolverSat, 137 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 747 GetRequests, 521 SyntacticMatches, 2 SemanticMatches, 224 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1799 ImplicationChecksByTransitivity, 7.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=127occurred in iteration=6, InterpolantAutomatonStates: 173, 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, 7 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 5123 NumberOfFragments, 2032 HoareAnnotationTreeSize, 4 FomulaSimplifications, 136435 FormulaSimplificationTreeSizeReduction, 37.6s HoareSimplificationTime, 4 FomulaSimplificationsInter, 22713 FormulaSimplificationTreeSizeReductionInter, 30.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 6.9s InterpolantComputationTime, 484 NumberOfCodeBlocks, 478 NumberOfCodeBlocksAsserted, 73 NumberOfCheckSat, 702 ConstructedInterpolants, 0 QuantifiedInterpolants, 2397 SizeOfPredicates, 10 NumberOfNonLiveVariables, 1144 ConjunctsInSsa, 127 ConjunctsInUnsatCore, 17 InterpolantComputations, 4 PerfectInterpolantSequences, 19529/21916 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: 10 <= n - InvariantResult [Line: 32]: Loop Invariant Derived loop invariant: ((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((10 <= m && 10 <= n) && 20 <= k) && i <= 2) && j == 0) || ((((10 <= m && 10 <= n) && i + 3 < n) && j + 3 < m) && 66 <= k)) || ((((10 <= m && i <= 1) && j < m) && 10 <= n) && 19 <= k)) || ((((10 <= m && 10 <= n) && 84 <= k) && i + 1 < n) && j <= 4)) || ((((10 <= m && i <= 1) && 10 <= n) && j <= 3) && 13 <= k)) || ((((10 <= m && i <= 1) && 10 <= n) && 18 <= k) && j + 1 < m)) || ((((10 <= m && i <= 1) && 10 <= n) && 14 <= k) && j <= 4)) || ((((10 <= m && i + 2 < n) && 10 <= n) && 75 <= k) && j <= 5)) || ((((10 <= m && i + 2 < n) && 10 <= n) && 77 <= k) && j + 2 < m)) || ((((10 <= m && 10 <= n) && i < n) && 94 <= k) && j <= 4)) || ((((10 <= m && 10 <= n) && 97 <= k) && j + 2 < m) && i < n)) || ((((10 <= m && 10 <= n) && 93 <= k) && i < n) && j <= 3)) || ((((10 <= m && i <= 1) && 10 <= n) && j + 3 < m) && 16 <= k)) || (((10 <= m && 10 <= n) && 40 <= k) && i <= 3)) || ((((10 <= m && j <= 1) && i + 2 < n) && 10 <= n) && 71 <= k)) || ((((36 <= k && 10 <= m) && 10 <= n) && j + 3 < m) && i <= 3)) || ((((10 <= m && 10 <= n) && 3 <= k) && j <= 3) && i == 0)) || ((((10 <= m && 10 <= n) && 30 <= k) && i <= 3) && j == 0)) || ((((10 <= m && 10 <= n) && i + 4 < n) && 58 <= k) && j + 1 < m)) || ((((10 <= m && 10 <= n) && j <= 5) && 85 <= k) && i + 1 < n)) || (((10 <= m && 10 <= n) && 70 <= k) && i + 3 < n)) || ((((10 <= m && 10 <= n) && i + 1 < n) && j == 0) && 80 <= k)) || ((((10 <= m && j <= 1) && 10 <= n) && i + 1 < n) && 81 <= k)) || (((10 <= m && 10 <= n) && i <= 4) && 50 <= k)) || ((((10 <= m && i <= 1) && 10 <= n) && j <= 5) && 15 <= k)) || ((((10 <= m && j <= 1) && 10 <= n) && i <= 4) && 41 <= k)) || ((((10 <= m && j <= 1) && 10 <= n) && 21 <= k) && i <= 2)) || ((((10 <= m && 10 <= n) && 25 <= k) && j <= 5) && i <= 2)) || ((((10 <= m && 10 <= n) && 83 <= k) && j <= 3) && i + 1 < n)) || ((((10 <= m && 10 <= n) && 82 <= k) && j <= 2) && i + 1 < n)) || ((((10 <= m && i <= 1) && 10 <= n) && 10 <= k) && j == 0)) || ((((10 <= m && 10 <= n) && j + 2 < m) && 37 <= k) && i <= 3)) || ((((10 <= m && j < m) && 10 <= n) && i <= 4) && 49 <= k)) || ((((10 <= m && 10 <= n) && i <= 4) && j <= 2) && 42 <= k)) || ((((10 <= m && 10 <= n) && 68 <= k) && i + 3 < n) && j + 1 < m)) || ((((10 <= m && i <= 1) && 10 <= n) && j + 2 < m) && 17 <= k)) || ((((10 <= m && i + 2 < n) && 10 <= n) && 78 <= k) && j + 1 < m)) || ((((10 <= m && 10 <= n) && i + 3 < n) && j <= 2) && 62 <= k)) || ((((10 <= m && 10 <= n) && j <= 3) && 33 <= k) && i <= 3)) || ((((10 <= m && 10 <= n) && j + 3 < m) && 6 <= k) && i == 0)) || ((((10 <= m && 10 <= n) && 98 <= k) && i < n) && j + 1 < m)) || (((10 <= m && i <= 1) && 10 <= n) && 20 <= k)) || ((((10 <= m && 0 <= k) && 10 <= n) && i == 0) && j == 0)) || ((((8 <= k && 10 <= m) && 10 <= n) && i == 0) && j + 1 < m)) || (((10 <= m && i + 2 < n) && 10 <= n) && 80 <= k)) || ((((10 <= m && 10 <= n) && 5 <= k) && j <= 5) && i == 0)) || ((((10 <= m && 10 <= n) && i <= 4) && 44 <= k) && j <= 4)) || ((((10 <= m && 53 <= k) && 10 <= n) && i + 4 < n) && j <= 3)) || ((((10 <= m && 10 <= n) && i + 4 < n) && 54 <= k) && j <= 4)) || ((((10 <= m && 10 <= n) && 23 <= k) && j <= 3) && i <= 2)) || ((((10 <= m && j <= 1) && 10 <= n) && 1 <= k) && i == 0)) || ((((10 <= m && 10 <= n) && i + 4 < n) && j <= 2) && 52 <= k)) || ((((10 <= m && 10 <= n) && 65 <= k) && i + 3 < n) && j <= 5)) || (((10 <= m && 10 <= n) && 90 <= k) && i + 1 < n)) || (((10 <= m && 10 <= n) && 60 <= k) && i + 4 < n)) || ((((10 <= m && 10 <= n) && j <= 5) && i <= 3) && 35 <= k)) || (((10 <= m && 10 <= n) && 30 <= k) && i <= 2)) || ((((10 <= m && j <= 1) && 10 <= n) && i <= 3) && 31 <= k)) || ((((10 <= m && 10 <= n) && 96 <= k) && i < n) && j + 3 < m)) || ((((10 <= m && 10 <= n) && j + 2 < m) && i <= 2) && 27 <= k)) || ((((10 <= m && j < m) && 10 <= n) && 89 <= k) && i + 1 < n)) || ((((10 <= m && 92 <= k) && 10 <= n) && i < n) && j <= 2)) || ((((10 <= m && j < m) && 10 <= n) && 69 <= k) && i + 3 < n)) || ((((10 <= m && 10 <= n) && i + 4 < n) && 50 <= k) && j == 0)) || ((((10 <= m && 10 <= n) && i <= 4) && j <= 3) && 43 <= k)) || ((((10 <= m && 79 <= k) && j < m) && i + 2 < n) && 10 <= n)) || ((((10 <= m && 10 <= n) && i <= 4) && j + 3 < m) && 46 <= k)) || ((((10 <= m && 63 <= k) && 10 <= n) && i + 3 < n) && j <= 3)) || ((((10 <= m && 10 <= n) && 38 <= k) && i <= 3) && j + 1 < m)) || ((((10 <= m && j < m) && 10 <= n) && 59 <= k) && i + 4 < n)) || ((((10 <= m && 10 <= n) && i + 4 < n) && 56 <= k) && j + 3 < m)) || ((((10 <= m && 10 <= n) && 90 <= k) && i < n) && j == 0)) || ((((10 <= m && j <= 1) && 10 <= n) && 61 <= k) && i + 3 < n)) || ((((10 <= m && j <= 1) && 10 <= n) && i + 4 < n) && 51 <= k)) || ((((10 <= m && 10 <= n) && j + 2 < m) && 7 <= k) && i == 0)) || ((((10 <= m && 10 <= n) && 32 <= k) && i <= 3) && j <= 2)) || ((((10 <= m && 10 <= n) && 2 <= k) && i == 0) && j <= 2)) || ((((87 <= k && 10 <= m) && 10 <= n) && j + 2 < m) && i + 1 < n)) || ((((10 <= m && j < m) && 10 <= n) && i < n) && 99 <= k)) || ((((10 <= m && j <= 1) && 10 <= n) && 91 <= k) && i < n)) || ((((10 <= m && j < m) && 10 <= n) && 39 <= k) && i <= 3)) || ((((10 <= m && 10 <= n) && 55 <= k) && i + 4 < n) && j <= 5)) || ((((10 <= m && 10 <= n) && j + 3 < m) && 86 <= k) && i + 1 < n)) || ((((10 <= m && 10 <= n) && i <= 4) && j <= 5) && 45 <= k)) || ((((10 <= m && 10 <= n) && 22 <= k) && i <= 2) && j <= 2)) || ((((10 <= m && 10 <= n) && 28 <= k) && i <= 2) && j + 1 < m)) || (((10 <= m && 10 <= n) && i == 0) && 10 <= k)) || ((((10 <= m && j < m) && 10 <= n) && 9 <= k) && i == 0)) || ((((10 <= m && 10 <= n) && i < n) && j <= 5) && 95 <= k)) || ((((10 <= m && i + 2 < n) && 10 <= n) && j <= 3) && 73 <= k)) || (((10 <= m && 10 <= n) && 100 <= k) && i < n)) || ((((10 <= m && i + 2 < n) && 10 <= n) && 74 <= k) && j <= 4)) || ((((10 <= m && 10 <= n) && i + 3 < n) && j + 2 < m) && 67 <= k)) || ((((10 <= m && i + 2 < n) && 10 <= n) && 72 <= k) && j <= 2)) || ((((10 <= m && 10 <= n) && i <= 4) && 40 <= k) && j == 0)) || ((((10 <= m && 10 <= n) && 48 <= k) && i <= 4) && j + 1 < m)) || ((((10 <= m && 10 <= n) && 60 <= k) && i + 3 < n) && j == 0)) || ((((10 <= m && 10 <= n) && i + 3 < n) && 64 <= k) && j <= 4)) || ((((10 <= m && i + 2 < n) && 10 <= n) && j + 3 < m) && 76 <= k)) || ((((10 <= m && i <= 1) && j <= 1) && 10 <= n) && 11 <= k)) || ((((29 <= k && 10 <= m) && j < m) && 10 <= n) && i <= 2)) || ((((10 <= m && 10 <= n) && 57 <= k) && i + 4 < n) && j + 2 < m)) || ((((10 <= m && i + 2 < n) && 10 <= n) && 70 <= k) && j == 0)) || ((((10 <= m && 10 <= n) && i <= 4) && j + 2 < m) && 47 <= k)) || ((((10 <= m && 10 <= n) && 24 <= k) && i <= 2) && j <= 4)) || ((((10 <= m && 10 <= n) && j + 3 < m) && i <= 2) && 26 <= k)) || ((((10 <= m && 4 <= k) && 10 <= n) && i == 0) && j <= 4)) || ((((10 <= m && i <= 1) && 10 <= n) && 12 <= k) && j <= 2)) || ((((10 <= m && 10 <= n) && 88 <= k) && i + 1 < n) && j + 1 < m)) || ((((10 <= m && 10 <= n) && i <= 3) && j <= 4) && 34 <= k) - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 31]: Loop Invariant Derived loop invariant: ((((((((((((10 <= m && 10 <= n) && 60 <= k) && i + 3 < n) || ((10 <= m && 10 <= n) && 100 <= k)) || (((10 <= m && 10 <= n) && i + 1 < n) && 80 <= k)) || (((10 <= m && 10 <= n) && 20 <= k) && i <= 2)) || (((10 <= m && 10 <= n) && i <= 4) && 40 <= k)) || (((10 <= m && 10 <= n) && 90 <= k) && i < n)) || (((10 <= m && 0 <= k) && 10 <= n) && i == 0)) || (((10 <= m && i + 2 < n) && 10 <= n) && 70 <= k)) || (((10 <= m && i <= 1) && 10 <= n) && 10 <= k)) || (((10 <= m && 10 <= n) && i + 4 < n) && 50 <= k)) || (((10 <= m && 10 <= n) && 30 <= k) && i <= 3) RESULT: Ultimate proved your program to be correct! [2021-11-03 04:45:00,914 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4147d66c-9d23-4825-b85a-d88799d5e04c/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE