./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem01_label34.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b018effe-8205-4684-b260-e7e9ce87fb4d/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b018effe-8205-4684-b260-e7e9ce87fb4d/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b018effe-8205-4684-b260-e7e9ce87fb4d/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b018effe-8205-4684-b260-e7e9ce87fb4d/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem01_label34.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b018effe-8205-4684-b260-e7e9ce87fb4d/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b018effe-8205-4684-b260-e7e9ce87fb4d/bin/utaipan-vmNK8stdcF --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 734ea858638864cf111875fb6688bf68ceb15644fd98461d3cd9d71a49a35f2c --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 02:38:07,579 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 02:38:07,581 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 02:38:07,617 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 02:38:07,618 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 02:38:07,619 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 02:38:07,621 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 02:38:07,623 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 02:38:07,626 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 02:38:07,627 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 02:38:07,629 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 02:38:07,630 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 02:38:07,631 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 02:38:07,632 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 02:38:07,634 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 02:38:07,636 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 02:38:07,637 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 02:38:07,639 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 02:38:07,641 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 02:38:07,646 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 02:38:07,652 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 02:38:07,655 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 02:38:07,656 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 02:38:07,657 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 02:38:07,661 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 02:38:07,661 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 02:38:07,662 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 02:38:07,663 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 02:38:07,664 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 02:38:07,665 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 02:38:07,665 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 02:38:07,675 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 02:38:07,678 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 02:38:07,679 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 02:38:07,681 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 02:38:07,681 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 02:38:07,682 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 02:38:07,683 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 02:38:07,683 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 02:38:07,684 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 02:38:07,685 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 02:38:07,687 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b018effe-8205-4684-b260-e7e9ce87fb4d/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-13 02:38:07,715 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 02:38:07,715 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 02:38:07,716 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 02:38:07,716 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 02:38:07,716 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-13 02:38:07,717 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-13 02:38:07,717 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-13 02:38:07,717 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-13 02:38:07,717 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-13 02:38:07,717 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-13 02:38:07,717 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-13 02:38:07,718 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-13 02:38:07,718 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-13 02:38:07,718 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-13 02:38:07,718 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-13 02:38:07,718 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-13 02:38:07,719 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 02:38:07,719 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-13 02:38:07,720 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 02:38:07,720 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-13 02:38:07,720 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 02:38:07,720 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 02:38:07,720 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 02:38:07,721 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 02:38:07,721 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-13 02:38:07,721 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-13 02:38:07,721 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 02:38:07,721 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 02:38:07,721 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 02:38:07,722 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 02:38:07,722 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 02:38:07,722 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 02:38:07,722 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 02:38:07,723 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 02:38:07,723 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 02:38:07,723 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-13 02:38:07,723 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-13 02:38:07,723 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 02:38:07,723 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 02:38:07,724 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-13 02:38:07,724 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_b018effe-8205-4684-b260-e7e9ce87fb4d/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b018effe-8205-4684-b260-e7e9ce87fb4d/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 734ea858638864cf111875fb6688bf68ceb15644fd98461d3cd9d71a49a35f2c [2021-11-13 02:38:07,989 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 02:38:08,029 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 02:38:08,033 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 02:38:08,034 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 02:38:08,035 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 02:38:08,036 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b018effe-8205-4684-b260-e7e9ce87fb4d/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/eca-rers2012/Problem01_label34.c [2021-11-13 02:38:08,108 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b018effe-8205-4684-b260-e7e9ce87fb4d/bin/utaipan-vmNK8stdcF/data/b8e3ab8d8/a92b8ccb15424613b654c3007882fbf4/FLAGb44d48a5e [2021-11-13 02:38:08,665 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 02:38:08,666 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b018effe-8205-4684-b260-e7e9ce87fb4d/sv-benchmarks/c/eca-rers2012/Problem01_label34.c [2021-11-13 02:38:08,680 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b018effe-8205-4684-b260-e7e9ce87fb4d/bin/utaipan-vmNK8stdcF/data/b8e3ab8d8/a92b8ccb15424613b654c3007882fbf4/FLAGb44d48a5e [2021-11-13 02:38:08,919 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b018effe-8205-4684-b260-e7e9ce87fb4d/bin/utaipan-vmNK8stdcF/data/b8e3ab8d8/a92b8ccb15424613b654c3007882fbf4 [2021-11-13 02:38:08,922 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 02:38:08,923 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 02:38:08,925 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 02:38:08,926 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 02:38:08,929 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 02:38:08,930 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:38:08" (1/1) ... [2021-11-13 02:38:08,936 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40051ba8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:38:08, skipping insertion in model container [2021-11-13 02:38:08,936 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:38:08" (1/1) ... [2021-11-13 02:38:08,945 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 02:38:09,002 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 02:38:09,369 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_b018effe-8205-4684-b260-e7e9ce87fb4d/sv-benchmarks/c/eca-rers2012/Problem01_label34.c[18605,18618] [2021-11-13 02:38:09,423 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 02:38:09,435 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 02:38:09,550 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_b018effe-8205-4684-b260-e7e9ce87fb4d/sv-benchmarks/c/eca-rers2012/Problem01_label34.c[18605,18618] [2021-11-13 02:38:09,568 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 02:38:09,586 INFO L208 MainTranslator]: Completed translation [2021-11-13 02:38:09,586 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:38:09 WrapperNode [2021-11-13 02:38:09,586 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 02:38:09,588 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-13 02:38:09,588 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-13 02:38:09,588 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-13 02:38:09,596 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:38:09" (1/1) ... [2021-11-13 02:38:09,620 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:38:09" (1/1) ... [2021-11-13 02:38:09,687 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-13 02:38:09,689 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 02:38:09,689 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 02:38:09,689 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 02:38:09,699 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:38:09" (1/1) ... [2021-11-13 02:38:09,699 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:38:09" (1/1) ... [2021-11-13 02:38:09,714 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:38:09" (1/1) ... [2021-11-13 02:38:09,718 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:38:09" (1/1) ... [2021-11-13 02:38:09,753 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:38:09" (1/1) ... [2021-11-13 02:38:09,780 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:38:09" (1/1) ... [2021-11-13 02:38:09,790 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:38:09" (1/1) ... [2021-11-13 02:38:09,809 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 02:38:09,810 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 02:38:09,810 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 02:38:09,811 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 02:38:09,812 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:38:09" (1/1) ... [2021-11-13 02:38:09,825 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 02:38:09,840 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b018effe-8205-4684-b260-e7e9ce87fb4d/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 02:38:09,870 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b018effe-8205-4684-b260-e7e9ce87fb4d/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 02:38:09,896 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b018effe-8205-4684-b260-e7e9ce87fb4d/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 02:38:09,920 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-13 02:38:09,922 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 02:38:09,922 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 02:38:09,922 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 02:38:11,197 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 02:38:11,197 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-13 02:38:11,200 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:38:11 BoogieIcfgContainer [2021-11-13 02:38:11,200 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 02:38:11,204 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 02:38:11,204 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 02:38:11,208 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 02:38:11,208 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 02:38:08" (1/3) ... [2021-11-13 02:38:11,209 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ed9939f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:38:11, skipping insertion in model container [2021-11-13 02:38:11,209 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:38:09" (2/3) ... [2021-11-13 02:38:11,209 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ed9939f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:38:11, skipping insertion in model container [2021-11-13 02:38:11,210 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:38:11" (3/3) ... [2021-11-13 02:38:11,213 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem01_label34.c [2021-11-13 02:38:11,222 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 02:38:11,222 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-13 02:38:11,284 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 02:38:11,298 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 [2021-11-13 02:38:11,298 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-13 02:38:11,318 INFO L276 IsEmpty]: Start isEmpty. Operand has 76 states, 74 states have (on average 1.945945945945946) internal successors, (144), 75 states have internal predecessors, (144), 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) [2021-11-13 02:38:11,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-13 02:38:11,336 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:38:11,336 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:38:11,337 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:38:11,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:38:11,347 INFO L85 PathProgramCache]: Analyzing trace with hash -104652088, now seen corresponding path program 1 times [2021-11-13 02:38:11,357 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:38:11,357 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465222265] [2021-11-13 02:38:11,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:38:11,358 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:38:11,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:38:11,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:38:11,762 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:38:11,763 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465222265] [2021-11-13 02:38:11,763 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465222265] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:38:11,764 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:38:11,764 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-13 02:38:11,766 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615819558] [2021-11-13 02:38:11,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:38:11,773 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 02:38:11,773 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:38:11,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 02:38:11,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 02:38:11,809 INFO L87 Difference]: Start difference. First operand has 76 states, 74 states have (on average 1.945945945945946) internal successors, (144), 75 states have internal predecessors, (144), 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 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 2 states have internal predecessors, (71), 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) [2021-11-13 02:38:12,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:38:12,181 INFO L93 Difference]: Finished difference Result 224 states and 428 transitions. [2021-11-13 02:38:12,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 02:38:12,184 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 2 states have internal predecessors, (71), 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 71 [2021-11-13 02:38:12,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:38:12,195 INFO L225 Difference]: With dead ends: 224 [2021-11-13 02:38:12,196 INFO L226 Difference]: Without dead ends: 145 [2021-11-13 02:38:12,199 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 02:38:12,202 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 18 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 255.71ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.31ms SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 317.45ms IncrementalHoareTripleChecker+Time [2021-11-13 02:38:12,203 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 36 Invalid, 285 Unknown, 0 Unchecked, 5.31ms Time], IncrementalHoareTripleChecker [73 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 317.45ms Time] [2021-11-13 02:38:12,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2021-11-13 02:38:12,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2021-11-13 02:38:12,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 144 states have (on average 1.7569444444444444) internal successors, (253), 144 states have internal predecessors, (253), 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) [2021-11-13 02:38:12,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 253 transitions. [2021-11-13 02:38:12,251 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 253 transitions. Word has length 71 [2021-11-13 02:38:12,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:38:12,252 INFO L470 AbstractCegarLoop]: Abstraction has 145 states and 253 transitions. [2021-11-13 02:38:12,252 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 2 states have internal predecessors, (71), 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) [2021-11-13 02:38:12,252 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 253 transitions. [2021-11-13 02:38:12,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-13 02:38:12,256 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:38:12,256 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:38:12,256 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-13 02:38:12,257 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:38:12,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:38:12,257 INFO L85 PathProgramCache]: Analyzing trace with hash -322432896, now seen corresponding path program 1 times [2021-11-13 02:38:12,258 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:38:12,258 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073249839] [2021-11-13 02:38:12,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:38:12,258 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:38:12,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:38:12,399 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-13 02:38:12,399 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:38:12,400 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073249839] [2021-11-13 02:38:12,400 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073249839] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:38:12,400 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:38:12,400 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-13 02:38:12,401 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27630042] [2021-11-13 02:38:12,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:38:12,403 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 02:38:12,404 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:38:12,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 02:38:12,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 02:38:12,406 INFO L87 Difference]: Start difference. First operand 145 states and 253 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 2 states have internal predecessors, (73), 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) [2021-11-13 02:38:12,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:38:12,785 INFO L93 Difference]: Finished difference Result 431 states and 756 transitions. [2021-11-13 02:38:12,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 02:38:12,786 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 2 states have internal predecessors, (73), 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 75 [2021-11-13 02:38:12,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:38:12,789 INFO L225 Difference]: With dead ends: 431 [2021-11-13 02:38:12,789 INFO L226 Difference]: Without dead ends: 287 [2021-11-13 02:38:12,791 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 02:38:12,792 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 17 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 270.56ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.52ms SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 339.60ms IncrementalHoareTripleChecker+Time [2021-11-13 02:38:12,793 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 27 Invalid, 281 Unknown, 0 Unchecked, 5.52ms Time], IncrementalHoareTripleChecker [70 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 339.60ms Time] [2021-11-13 02:38:12,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2021-11-13 02:38:12,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 287. [2021-11-13 02:38:12,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 286 states have (on average 1.6748251748251748) internal successors, (479), 286 states have internal predecessors, (479), 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) [2021-11-13 02:38:12,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 479 transitions. [2021-11-13 02:38:12,816 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 479 transitions. Word has length 75 [2021-11-13 02:38:12,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:38:12,817 INFO L470 AbstractCegarLoop]: Abstraction has 287 states and 479 transitions. [2021-11-13 02:38:12,817 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 2 states have internal predecessors, (73), 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) [2021-11-13 02:38:12,817 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 479 transitions. [2021-11-13 02:38:12,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-13 02:38:12,822 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:38:12,822 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:38:12,822 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-13 02:38:12,823 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:38:12,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:38:12,824 INFO L85 PathProgramCache]: Analyzing trace with hash -1478021858, now seen corresponding path program 1 times [2021-11-13 02:38:12,824 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:38:12,824 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29950848] [2021-11-13 02:38:12,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:38:12,825 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:38:12,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:38:12,869 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:38:12,869 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:38:12,869 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29950848] [2021-11-13 02:38:12,870 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29950848] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:38:12,870 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:38:12,870 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-13 02:38:12,870 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580512478] [2021-11-13 02:38:12,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:38:12,871 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 02:38:12,871 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:38:12,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 02:38:12,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 02:38:12,872 INFO L87 Difference]: Start difference. First operand 287 states and 479 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 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) [2021-11-13 02:38:13,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:38:13,190 INFO L93 Difference]: Finished difference Result 786 states and 1296 transitions. [2021-11-13 02:38:13,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 02:38:13,191 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 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 76 [2021-11-13 02:38:13,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:38:13,194 INFO L225 Difference]: With dead ends: 786 [2021-11-13 02:38:13,195 INFO L226 Difference]: Without dead ends: 500 [2021-11-13 02:38:13,197 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 02:38:13,198 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 112 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 243.80ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.34ms SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 298.07ms IncrementalHoareTripleChecker+Time [2021-11-13 02:38:13,202 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [112 Valid, 25 Invalid, 262 Unknown, 0 Unchecked, 3.34ms Time], IncrementalHoareTripleChecker [69 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 298.07ms Time] [2021-11-13 02:38:13,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2021-11-13 02:38:13,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 500. [2021-11-13 02:38:13,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 500 states, 499 states have (on average 1.4949899799599198) internal successors, (746), 499 states have internal predecessors, (746), 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) [2021-11-13 02:38:13,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500 states to 500 states and 746 transitions. [2021-11-13 02:38:13,238 INFO L78 Accepts]: Start accepts. Automaton has 500 states and 746 transitions. Word has length 76 [2021-11-13 02:38:13,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:38:13,238 INFO L470 AbstractCegarLoop]: Abstraction has 500 states and 746 transitions. [2021-11-13 02:38:13,239 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 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) [2021-11-13 02:38:13,239 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states and 746 transitions. [2021-11-13 02:38:13,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-13 02:38:13,244 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:38:13,244 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:38:13,244 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-13 02:38:13,245 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:38:13,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:38:13,245 INFO L85 PathProgramCache]: Analyzing trace with hash -1758125476, now seen corresponding path program 1 times [2021-11-13 02:38:13,246 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:38:13,246 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819669692] [2021-11-13 02:38:13,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:38:13,246 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:38:13,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:38:13,303 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:38:13,303 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:38:13,304 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819669692] [2021-11-13 02:38:13,304 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819669692] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:38:13,304 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:38:13,304 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 02:38:13,304 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568893785] [2021-11-13 02:38:13,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:38:13,305 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 02:38:13,305 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:38:13,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 02:38:13,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 02:38:13,306 INFO L87 Difference]: Start difference. First operand 500 states and 746 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 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) [2021-11-13 02:38:13,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:38:13,646 INFO L93 Difference]: Finished difference Result 1354 states and 2009 transitions. [2021-11-13 02:38:13,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 02:38:13,647 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 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 84 [2021-11-13 02:38:13,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:38:13,652 INFO L225 Difference]: With dead ends: 1354 [2021-11-13 02:38:13,652 INFO L226 Difference]: Without dead ends: 855 [2021-11-13 02:38:13,653 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 02:38:13,661 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 74 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 242.98ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.89ms SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 297.36ms IncrementalHoareTripleChecker+Time [2021-11-13 02:38:13,664 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [74 Valid, 27 Invalid, 298 Unknown, 0 Unchecked, 2.89ms Time], IncrementalHoareTripleChecker [85 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 297.36ms Time] [2021-11-13 02:38:13,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 855 states. [2021-11-13 02:38:13,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 855 to 642. [2021-11-13 02:38:13,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 642 states, 641 states have (on average 1.4789391575663027) internal successors, (948), 641 states have internal predecessors, (948), 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) [2021-11-13 02:38:13,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 948 transitions. [2021-11-13 02:38:13,712 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 948 transitions. Word has length 84 [2021-11-13 02:38:13,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:38:13,713 INFO L470 AbstractCegarLoop]: Abstraction has 642 states and 948 transitions. [2021-11-13 02:38:13,713 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 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) [2021-11-13 02:38:13,713 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 948 transitions. [2021-11-13 02:38:13,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-13 02:38:13,716 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:38:13,717 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:38:13,717 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-13 02:38:13,717 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:38:13,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:38:13,719 INFO L85 PathProgramCache]: Analyzing trace with hash -1676770505, now seen corresponding path program 1 times [2021-11-13 02:38:13,719 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:38:13,719 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265955097] [2021-11-13 02:38:13,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:38:13,720 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:38:13,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:38:13,815 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-13 02:38:13,816 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:38:13,816 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265955097] [2021-11-13 02:38:13,816 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265955097] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:38:13,816 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:38:13,816 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-13 02:38:13,817 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147852032] [2021-11-13 02:38:13,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:38:13,817 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 02:38:13,817 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:38:13,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 02:38:13,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 02:38:13,818 INFO L87 Difference]: Start difference. First operand 642 states and 948 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 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) [2021-11-13 02:38:14,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:38:14,113 INFO L93 Difference]: Finished difference Result 1283 states and 1895 transitions. [2021-11-13 02:38:14,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 02:38:14,113 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 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 87 [2021-11-13 02:38:14,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:38:14,117 INFO L225 Difference]: With dead ends: 1283 [2021-11-13 02:38:14,117 INFO L226 Difference]: Without dead ends: 642 [2021-11-13 02:38:14,118 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 02:38:14,120 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 72 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 201.24ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.82ms SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 259.22ms IncrementalHoareTripleChecker+Time [2021-11-13 02:38:14,120 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 58 Invalid, 231 Unknown, 0 Unchecked, 1.82ms Time], IncrementalHoareTripleChecker [41 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 259.22ms Time] [2021-11-13 02:38:14,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2021-11-13 02:38:14,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 642. [2021-11-13 02:38:14,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 642 states, 641 states have (on average 1.4602184087363494) internal successors, (936), 641 states have internal predecessors, (936), 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) [2021-11-13 02:38:14,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 936 transitions. [2021-11-13 02:38:14,139 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 936 transitions. Word has length 87 [2021-11-13 02:38:14,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:38:14,139 INFO L470 AbstractCegarLoop]: Abstraction has 642 states and 936 transitions. [2021-11-13 02:38:14,140 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 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) [2021-11-13 02:38:14,140 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 936 transitions. [2021-11-13 02:38:14,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-13 02:38:14,142 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:38:14,142 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:38:14,142 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-13 02:38:14,142 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:38:14,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:38:14,143 INFO L85 PathProgramCache]: Analyzing trace with hash 1135673583, now seen corresponding path program 1 times [2021-11-13 02:38:14,143 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:38:14,143 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154459859] [2021-11-13 02:38:14,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:38:14,144 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:38:14,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:38:14,234 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 22 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-13 02:38:14,234 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:38:14,234 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154459859] [2021-11-13 02:38:14,234 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154459859] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 02:38:14,234 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1807694375] [2021-11-13 02:38:14,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:38:14,235 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 02:38:14,235 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b018effe-8205-4684-b260-e7e9ce87fb4d/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 02:38:14,238 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b018effe-8205-4684-b260-e7e9ce87fb4d/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 02:38:14,265 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b018effe-8205-4684-b260-e7e9ce87fb4d/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-13 02:38:14,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:38:14,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 02:38:14,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:38:14,744 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-13 02:38:14,745 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:38:15,029 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-13 02:38:15,030 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1807694375] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:38:15,030 INFO L186 FreeRefinementEngine]: Found 2 perfect and 1 imperfect interpolant sequences. [2021-11-13 02:38:15,030 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [3] total 5 [2021-11-13 02:38:15,031 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152454440] [2021-11-13 02:38:15,031 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:38:15,031 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 02:38:15,032 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:38:15,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 02:38:15,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-13 02:38:15,033 INFO L87 Difference]: Start difference. First operand 642 states and 936 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 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) [2021-11-13 02:38:15,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:38:15,304 INFO L93 Difference]: Finished difference Result 1070 states and 1538 transitions. [2021-11-13 02:38:15,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 02:38:15,305 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 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 91 [2021-11-13 02:38:15,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:38:15,312 INFO L225 Difference]: With dead ends: 1070 [2021-11-13 02:38:15,312 INFO L226 Difference]: Without dead ends: 1068 [2021-11-13 02:38:15,313 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 179 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-13 02:38:15,314 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 24 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 196.23ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.81ms SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 249.30ms IncrementalHoareTripleChecker+Time [2021-11-13 02:38:15,314 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 27 Invalid, 255 Unknown, 0 Unchecked, 1.81ms Time], IncrementalHoareTripleChecker [15 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 249.30ms Time] [2021-11-13 02:38:15,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1068 states. [2021-11-13 02:38:15,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1068 to 1068. [2021-11-13 02:38:15,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1068 states, 1067 states have (on average 1.4395501405810684) internal successors, (1536), 1067 states have internal predecessors, (1536), 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) [2021-11-13 02:38:15,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1068 states to 1068 states and 1536 transitions. [2021-11-13 02:38:15,347 INFO L78 Accepts]: Start accepts. Automaton has 1068 states and 1536 transitions. Word has length 91 [2021-11-13 02:38:15,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:38:15,350 INFO L470 AbstractCegarLoop]: Abstraction has 1068 states and 1536 transitions. [2021-11-13 02:38:15,350 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 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) [2021-11-13 02:38:15,350 INFO L276 IsEmpty]: Start isEmpty. Operand 1068 states and 1536 transitions. [2021-11-13 02:38:15,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-11-13 02:38:15,354 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:38:15,354 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:38:15,398 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b018effe-8205-4684-b260-e7e9ce87fb4d/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-13 02:38:15,567 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b018effe-8205-4684-b260-e7e9ce87fb4d/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 02:38:15,568 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:38:15,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:38:15,568 INFO L85 PathProgramCache]: Analyzing trace with hash 1965226387, now seen corresponding path program 1 times [2021-11-13 02:38:15,568 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:38:15,569 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256201488] [2021-11-13 02:38:15,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:38:15,569 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:38:15,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:38:15,674 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2021-11-13 02:38:15,674 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:38:15,674 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256201488] [2021-11-13 02:38:15,674 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256201488] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:38:15,675 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:38:15,675 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 02:38:15,675 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497783344] [2021-11-13 02:38:15,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:38:15,676 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 02:38:15,676 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:38:15,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 02:38:15,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 02:38:15,679 INFO L87 Difference]: Start difference. First operand 1068 states and 1536 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 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) [2021-11-13 02:38:16,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:38:16,015 INFO L93 Difference]: Finished difference Result 1920 states and 2754 transitions. [2021-11-13 02:38:16,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 02:38:16,015 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 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 149 [2021-11-13 02:38:16,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:38:16,016 INFO L225 Difference]: With dead ends: 1920 [2021-11-13 02:38:16,016 INFO L226 Difference]: Without dead ends: 0 [2021-11-13 02:38:16,018 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 02:38:16,019 INFO L933 BasicCegarLoop]: 120 mSDtfsCounter, 66 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 227.95ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.30ms SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 300.70ms IncrementalHoareTripleChecker+Time [2021-11-13 02:38:16,020 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [66 Valid, 123 Invalid, 258 Unknown, 0 Unchecked, 2.30ms Time], IncrementalHoareTripleChecker [57 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 300.70ms Time] [2021-11-13 02:38:16,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-13 02:38:16,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-13 02:38:16,021 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) [2021-11-13 02:38:16,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-13 02:38:16,021 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 149 [2021-11-13 02:38:16,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:38:16,022 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-13 02:38:16,022 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 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) [2021-11-13 02:38:16,022 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-13 02:38:16,022 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-13 02:38:16,025 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-13 02:38:16,026 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-13 02:38:16,028 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-13 02:38:16,204 INFO L858 garLoopResultBuilder]: For program point L102(lines 102 400) no Hoare annotation was computed. [2021-11-13 02:38:16,204 INFO L858 garLoopResultBuilder]: For program point L598(line 598) no Hoare annotation was computed. [2021-11-13 02:38:16,204 INFO L858 garLoopResultBuilder]: For program point L334(lines 334 400) no Hoare annotation was computed. [2021-11-13 02:38:16,204 INFO L858 garLoopResultBuilder]: For program point L500-1(lines 40 585) no Hoare annotation was computed. [2021-11-13 02:38:16,204 INFO L858 garLoopResultBuilder]: For program point L302(lines 302 400) no Hoare annotation was computed. [2021-11-13 02:38:16,205 INFO L858 garLoopResultBuilder]: For program point L170(lines 170 400) no Hoare annotation was computed. [2021-11-13 02:38:16,205 INFO L858 garLoopResultBuilder]: For program point L501(line 501) no Hoare annotation was computed. [2021-11-13 02:38:16,205 INFO L858 garLoopResultBuilder]: For program point L204(lines 204 400) no Hoare annotation was computed. [2021-11-13 02:38:16,205 INFO L858 garLoopResultBuilder]: For program point L72(lines 72 400) no Hoare annotation was computed. [2021-11-13 02:38:16,205 INFO L858 garLoopResultBuilder]: For program point L271(lines 271 400) no Hoare annotation was computed. [2021-11-13 02:38:16,205 INFO L858 garLoopResultBuilder]: For program point L139(lines 139 400) no Hoare annotation was computed. [2021-11-13 02:38:16,205 INFO L858 garLoopResultBuilder]: For program point L371(lines 371 400) no Hoare annotation was computed. [2021-11-13 02:38:16,205 INFO L858 garLoopResultBuilder]: For program point L107(lines 107 400) no Hoare annotation was computed. [2021-11-13 02:38:16,206 INFO L858 garLoopResultBuilder]: For program point L41(lines 41 400) no Hoare annotation was computed. [2021-11-13 02:38:16,206 INFO L858 garLoopResultBuilder]: For program point L339(lines 339 400) no Hoare annotation was computed. [2021-11-13 02:38:16,206 INFO L858 garLoopResultBuilder]: For program point L207(lines 207 400) no Hoare annotation was computed. [2021-11-13 02:38:16,206 INFO L858 garLoopResultBuilder]: For program point L75(lines 75 400) no Hoare annotation was computed. [2021-11-13 02:38:16,206 INFO L858 garLoopResultBuilder]: For program point L373(lines 373 400) no Hoare annotation was computed. [2021-11-13 02:38:16,206 INFO L858 garLoopResultBuilder]: For program point L241(lines 241 400) no Hoare annotation was computed. [2021-11-13 02:38:16,206 INFO L858 garLoopResultBuilder]: For program point L175(lines 175 400) no Hoare annotation was computed. [2021-11-13 02:38:16,206 INFO L858 garLoopResultBuilder]: For program point L275(lines 275 400) no Hoare annotation was computed. [2021-11-13 02:38:16,207 INFO L858 garLoopResultBuilder]: For program point L375(lines 375 400) no Hoare annotation was computed. [2021-11-13 02:38:16,207 INFO L858 garLoopResultBuilder]: For program point L309(lines 309 400) no Hoare annotation was computed. [2021-11-13 02:38:16,207 INFO L858 garLoopResultBuilder]: For program point L45(lines 45 400) no Hoare annotation was computed. [2021-11-13 02:38:16,207 INFO L858 garLoopResultBuilder]: For program point L343(lines 343 400) no Hoare annotation was computed. [2021-11-13 02:38:16,207 INFO L858 garLoopResultBuilder]: For program point L112(lines 112 400) no Hoare annotation was computed. [2021-11-13 02:38:16,207 INFO L858 garLoopResultBuilder]: For program point L278(lines 278 400) no Hoare annotation was computed. [2021-11-13 02:38:16,207 INFO L858 garLoopResultBuilder]: For program point L146(lines 146 400) no Hoare annotation was computed. [2021-11-13 02:38:16,208 INFO L858 garLoopResultBuilder]: For program point L213(lines 213 400) no Hoare annotation was computed. [2021-11-13 02:38:16,208 INFO L858 garLoopResultBuilder]: For program point L82(lines 82 400) no Hoare annotation was computed. [2021-11-13 02:38:16,209 INFO L858 garLoopResultBuilder]: For program point L347(lines 347 400) no Hoare annotation was computed. [2021-11-13 02:38:16,209 INFO L858 garLoopResultBuilder]: For program point L248(lines 248 400) no Hoare annotation was computed. [2021-11-13 02:38:16,209 INFO L858 garLoopResultBuilder]: For program point L183(lines 183 400) no Hoare annotation was computed. [2021-11-13 02:38:16,209 INFO L858 garLoopResultBuilder]: For program point L150(lines 150 400) no Hoare annotation was computed. [2021-11-13 02:38:16,209 INFO L858 garLoopResultBuilder]: For program point L382(lines 382 400) no Hoare annotation was computed. [2021-11-13 02:38:16,209 INFO L858 garLoopResultBuilder]: For program point L316(lines 316 400) no Hoare annotation was computed. [2021-11-13 02:38:16,210 INFO L858 garLoopResultBuilder]: For program point L283(lines 283 400) no Hoare annotation was computed. [2021-11-13 02:38:16,210 INFO L858 garLoopResultBuilder]: For program point L118(lines 118 400) no Hoare annotation was computed. [2021-11-13 02:38:16,210 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-13 02:38:16,210 INFO L858 garLoopResultBuilder]: For program point L218(lines 218 400) no Hoare annotation was computed. [2021-11-13 02:38:16,210 INFO L858 garLoopResultBuilder]: For program point L53(lines 53 400) no Hoare annotation was computed. [2021-11-13 02:38:16,211 INFO L858 garLoopResultBuilder]: For program point L154(lines 154 400) no Hoare annotation was computed. [2021-11-13 02:38:16,211 INFO L854 garLoopResultBuilder]: At program point L584(lines 40 585) the Hoare annotation is: (let ((.cse0 (= ~a7~0 1)) (.cse2 (<= ~a16~0 5)) (.cse1 (= ~a21~0 1))) (or (and .cse0 (= ~a20~0 1)) (and .cse1 .cse0 .cse2) (and (= ~a17~0 1) .cse0 .cse2) (and (<= ~a7~0 0) .cse1))) [2021-11-13 02:38:16,211 INFO L858 garLoopResultBuilder]: For program point L188(lines 188 400) no Hoare annotation was computed. [2021-11-13 02:38:16,211 INFO L858 garLoopResultBuilder]: For program point L387(lines 387 400) no Hoare annotation was computed. [2021-11-13 02:38:16,212 INFO L858 garLoopResultBuilder]: For program point L288(lines 288 400) no Hoare annotation was computed. [2021-11-13 02:38:16,212 INFO L858 garLoopResultBuilder]: For program point L255(lines 255 400) no Hoare annotation was computed. [2021-11-13 02:38:16,212 INFO L858 garLoopResultBuilder]: For program point L90(lines 90 400) no Hoare annotation was computed. [2021-11-13 02:38:16,212 INFO L858 garLoopResultBuilder]: For program point L355(lines 355 400) no Hoare annotation was computed. [2021-11-13 02:38:16,212 INFO L858 garLoopResultBuilder]: For program point L322(lines 322 400) no Hoare annotation was computed. [2021-11-13 02:38:16,212 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-13 02:38:16,213 INFO L858 garLoopResultBuilder]: For program point L124(lines 124 400) no Hoare annotation was computed. [2021-11-13 02:38:16,213 INFO L861 garLoopResultBuilder]: At program point L587(lines 587 604) the Hoare annotation is: true [2021-11-13 02:38:16,213 INFO L858 garLoopResultBuilder]: For program point L224(lines 224 400) no Hoare annotation was computed. [2021-11-13 02:38:16,213 INFO L858 garLoopResultBuilder]: For program point L158(lines 158 400) no Hoare annotation was computed. [2021-11-13 02:38:16,213 INFO L858 garLoopResultBuilder]: For program point L59(lines 59 400) no Hoare annotation was computed. [2021-11-13 02:38:16,214 INFO L858 garLoopResultBuilder]: For program point L94(lines 94 400) no Hoare annotation was computed. [2021-11-13 02:38:16,214 INFO L858 garLoopResultBuilder]: For program point L392(lines 392 400) no Hoare annotation was computed. [2021-11-13 02:38:16,214 INFO L858 garLoopResultBuilder]: For program point L326(lines 326 400) no Hoare annotation was computed. [2021-11-13 02:38:16,214 INFO L858 garLoopResultBuilder]: For program point L260(lines 260 400) no Hoare annotation was computed. [2021-11-13 02:38:16,214 INFO L858 garLoopResultBuilder]: For program point L228(lines 228 400) no Hoare annotation was computed. [2021-11-13 02:38:16,214 INFO L858 garLoopResultBuilder]: For program point L162(lines 162 400) no Hoare annotation was computed. [2021-11-13 02:38:16,215 INFO L858 garLoopResultBuilder]: For program point L129(lines 129 400) no Hoare annotation was computed. [2021-11-13 02:38:16,215 INFO L858 garLoopResultBuilder]: For program point L328(lines 328 400) no Hoare annotation was computed. [2021-11-13 02:38:16,215 INFO L858 garLoopResultBuilder]: For program point L196(lines 196 400) no Hoare annotation was computed. [2021-11-13 02:38:16,215 INFO L858 garLoopResultBuilder]: For program point L64(lines 64 400) no Hoare annotation was computed. [2021-11-13 02:38:16,215 INFO L854 garLoopResultBuilder]: At program point L593-2(lines 593 603) the Hoare annotation is: (let ((.cse0 (= ~a7~0 1)) (.cse2 (<= ~a16~0 5)) (.cse1 (= ~a21~0 1))) (or (and .cse0 (= ~a20~0 1)) (and .cse1 .cse0 .cse2) (and (= ~a17~0 1) .cse0 .cse2) (and (<= ~a7~0 0) .cse1))) [2021-11-13 02:38:16,216 INFO L858 garLoopResultBuilder]: For program point L296(lines 296 400) no Hoare annotation was computed. [2021-11-13 02:38:16,216 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 501) no Hoare annotation was computed. [2021-11-13 02:38:16,216 INFO L858 garLoopResultBuilder]: For program point L363(lines 363 400) no Hoare annotation was computed. [2021-11-13 02:38:16,216 INFO L858 garLoopResultBuilder]: For program point L199(lines 199 400) no Hoare annotation was computed. [2021-11-13 02:38:16,216 INFO L858 garLoopResultBuilder]: For program point L497-1(lines 40 585) no Hoare annotation was computed. [2021-11-13 02:38:16,216 INFO L858 garLoopResultBuilder]: For program point L365(lines 365 400) no Hoare annotation was computed. [2021-11-13 02:38:16,217 INFO L858 garLoopResultBuilder]: For program point L266(lines 266 400) no Hoare annotation was computed. [2021-11-13 02:38:16,217 INFO L858 garLoopResultBuilder]: For program point L233(lines 233 400) no Hoare annotation was computed. [2021-11-13 02:38:16,217 INFO L858 garLoopResultBuilder]: For program point L134(lines 134 400) no Hoare annotation was computed. [2021-11-13 02:38:16,220 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:38:16,222 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-13 02:38:16,237 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.11 02:38:16 BoogieIcfgContainer [2021-11-13 02:38:16,237 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-13 02:38:16,238 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-13 02:38:16,238 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-13 02:38:16,238 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-13 02:38:16,239 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:38:11" (3/4) ... [2021-11-13 02:38:16,242 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-13 02:38:16,262 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 110 nodes and edges [2021-11-13 02:38:16,263 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 22 nodes and edges [2021-11-13 02:38:16,264 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-11-13 02:38:16,266 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-13 02:38:16,383 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b018effe-8205-4684-b260-e7e9ce87fb4d/bin/utaipan-vmNK8stdcF/witness.graphml [2021-11-13 02:38:16,383 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-13 02:38:16,384 INFO L158 Benchmark]: Toolchain (without parser) took 7460.47ms. Allocated memory was 123.7MB in the beginning and 237.0MB in the end (delta: 113.2MB). Free memory was 81.9MB in the beginning and 155.8MB in the end (delta: -73.8MB). Peak memory consumption was 41.1MB. Max. memory is 16.1GB. [2021-11-13 02:38:16,384 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 123.7MB. Free memory is still 100.6MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 02:38:16,385 INFO L158 Benchmark]: CACSL2BoogieTranslator took 661.67ms. Allocated memory is still 123.7MB. Free memory was 81.7MB in the beginning and 80.7MB in the end (delta: 985.5kB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-13 02:38:16,385 INFO L158 Benchmark]: Boogie Procedure Inliner took 100.16ms. Allocated memory is still 123.7MB. Free memory was 80.7MB in the beginning and 75.0MB in the end (delta: 5.8MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-11-13 02:38:16,385 INFO L158 Benchmark]: Boogie Preprocessor took 120.73ms. Allocated memory is still 123.7MB. Free memory was 75.0MB in the beginning and 70.8MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-13 02:38:16,386 INFO L158 Benchmark]: RCFGBuilder took 1390.49ms. Allocated memory was 123.7MB in the beginning and 180.4MB in the end (delta: 56.6MB). Free memory was 70.8MB in the beginning and 96.4MB in the end (delta: -25.7MB). Peak memory consumption was 37.8MB. Max. memory is 16.1GB. [2021-11-13 02:38:16,386 INFO L158 Benchmark]: TraceAbstraction took 5033.21ms. Allocated memory was 180.4MB in the beginning and 237.0MB in the end (delta: 56.6MB). Free memory was 96.4MB in the beginning and 170.6MB in the end (delta: -74.2MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 02:38:16,387 INFO L158 Benchmark]: Witness Printer took 145.43ms. Allocated memory is still 237.0MB. Free memory was 170.6MB in the beginning and 155.8MB in the end (delta: 14.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2021-11-13 02:38:16,389 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 123.7MB. Free memory is still 100.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 661.67ms. Allocated memory is still 123.7MB. Free memory was 81.7MB in the beginning and 80.7MB in the end (delta: 985.5kB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 100.16ms. Allocated memory is still 123.7MB. Free memory was 80.7MB in the beginning and 75.0MB in the end (delta: 5.8MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 120.73ms. Allocated memory is still 123.7MB. Free memory was 75.0MB in the beginning and 70.8MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1390.49ms. Allocated memory was 123.7MB in the beginning and 180.4MB in the end (delta: 56.6MB). Free memory was 70.8MB in the beginning and 96.4MB in the end (delta: -25.7MB). Peak memory consumption was 37.8MB. Max. memory is 16.1GB. * TraceAbstraction took 5033.21ms. Allocated memory was 180.4MB in the beginning and 237.0MB in the end (delta: 56.6MB). Free memory was 96.4MB in the beginning and 170.6MB in the end (delta: -74.2MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 145.43ms. Allocated memory is still 237.0MB. Free memory was 170.6MB in the beginning and 155.8MB in the end (delta: 14.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 501]: 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, 76 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 4.9s, OverallIterations: 7, TraceHistogramMax: 5, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 383 SdHoareTripleChecker+Valid, 2061.71ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 383 mSDsluCounter, 323 SdHoareTripleChecker+Invalid, 1638.47ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 28 mSDsCounter, 410 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1460 IncrementalHoareTripleChecker+Invalid, 1870 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 410 mSolverCounterUnsat, 296 mSDtfsCounter, 1460 mSolverCounterSat, 23.00ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 197 GetRequests, 187 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1068occurred in iteration=6, InterpolantAutomatonStates: 21, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 7 MinimizatonAttempts, 213 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 29 NumberOfFragments, 71 HoareAnnotationTreeSize, 3 FomulaSimplifications, 16 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 340 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 724 NumberOfCodeBlocks, 724 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 806 ConstructedInterpolants, 0 QuantifiedInterpolants, 1581 SizeOfPredicates, 0 NumberOfNonLiveVariables, 304 ConjunctsInSsa, 2 ConjunctsInUnsatCore, 9 InterpolantComputations, 8 PerfectInterpolantSequences, 256/259 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: 593]: Loop Invariant Derived loop invariant: (((a7 == 1 && a20 == 1) || ((a21 == 1 && a7 == 1) && a16 <= 5)) || ((a17 == 1 && a7 == 1) && a16 <= 5)) || (a7 <= 0 && a21 == 1) - InvariantResult [Line: 587]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: (((a7 == 1 && a20 == 1) || ((a21 == 1 && a7 == 1) && a16 <= 5)) || ((a17 == 1 && a7 == 1) && a16 <= 5)) || (a7 <= 0 && a21 == 1) RESULT: Ultimate proved your program to be correct! [2021-11-13 02:38:16,438 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b018effe-8205-4684-b260-e7e9ce87fb4d/bin/utaipan-vmNK8stdcF/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