./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem01_label01.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5780aefc-13e5-4d21-988c-82f1b2f77dba/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5780aefc-13e5-4d21-988c-82f1b2f77dba/bin/utaipan-WLngWcDbfI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5780aefc-13e5-4d21-988c-82f1b2f77dba/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5780aefc-13e5-4d21-988c-82f1b2f77dba/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem01_label01.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5780aefc-13e5-4d21-988c-82f1b2f77dba/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5780aefc-13e5-4d21-988c-82f1b2f77dba/bin/utaipan-WLngWcDbfI --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 81c0ce4bbe6e9ab2e32ee97298c1b567b29fd94b ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2021-10-11 02:23:10,511 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:23:10,513 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:23:10,563 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:23:10,564 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:23:10,565 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:23:10,567 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:23:10,569 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:23:10,572 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:23:10,573 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:23:10,574 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:23:10,576 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:23:10,594 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:23:10,596 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:23:10,597 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:23:10,604 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:23:10,606 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:23:10,609 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:23:10,613 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:23:10,622 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:23:10,625 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:23:10,626 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:23:10,627 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:23:10,628 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:23:10,631 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:23:10,631 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:23:10,632 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:23:10,633 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:23:10,633 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:23:10,634 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:23:10,635 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:23:10,636 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:23:10,637 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:23:10,638 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:23:10,639 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:23:10,639 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:23:10,640 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:23:10,641 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:23:10,641 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:23:10,642 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:23:10,643 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:23:10,644 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5780aefc-13e5-4d21-988c-82f1b2f77dba/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-11 02:23:10,670 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:23:10,670 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:23:10,671 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:23:10,671 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:23:10,671 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:23:10,672 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:23:10,672 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:23:10,672 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:23:10,672 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:23:10,673 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:23:10,673 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:23:10,673 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:23:10,673 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:23:10,673 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:23:10,674 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:23:10,674 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:23:10,675 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:23:10,675 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:23:10,675 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:23:10,675 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:23:10,676 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:23:10,676 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:23:10,676 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:23:10,676 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:23:10,676 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:23:10,677 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:23:10,677 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:23:10,677 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:23:10,677 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:23:10,678 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:23:10,678 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:23:10,678 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:23:10,678 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:23:10,678 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:23:10,679 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:23:10,679 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:23:10,679 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:23:10,679 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:23:10,679 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:23:10,680 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_5780aefc-13e5-4d21-988c-82f1b2f77dba/bin/utaipan-WLngWcDbfI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5780aefc-13e5-4d21-988c-82f1b2f77dba/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 81c0ce4bbe6e9ab2e32ee97298c1b567b29fd94b [2021-10-11 02:23:10,929 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:23:10,961 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:23:10,965 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:23:10,967 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:23:10,967 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:23:10,968 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5780aefc-13e5-4d21-988c-82f1b2f77dba/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/eca-rers2012/Problem01_label01.c [2021-10-11 02:23:11,052 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5780aefc-13e5-4d21-988c-82f1b2f77dba/bin/utaipan-WLngWcDbfI/data/c82c1b0e5/890c53170d7943c4b6e91c42a6d5368e/FLAG6e306dced [2021-10-11 02:23:11,731 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:23:11,732 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5780aefc-13e5-4d21-988c-82f1b2f77dba/sv-benchmarks/c/eca-rers2012/Problem01_label01.c [2021-10-11 02:23:11,747 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5780aefc-13e5-4d21-988c-82f1b2f77dba/bin/utaipan-WLngWcDbfI/data/c82c1b0e5/890c53170d7943c4b6e91c42a6d5368e/FLAG6e306dced [2021-10-11 02:23:11,956 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5780aefc-13e5-4d21-988c-82f1b2f77dba/bin/utaipan-WLngWcDbfI/data/c82c1b0e5/890c53170d7943c4b6e91c42a6d5368e [2021-10-11 02:23:11,959 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:23:11,961 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:23:11,967 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:23:11,968 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:23:11,971 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:23:11,972 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:23:11" (1/1) ... [2021-10-11 02:23:11,975 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70f52efc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:11, skipping insertion in model container [2021-10-11 02:23:11,982 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:23:11" (1/1) ... [2021-10-11 02:23:11,990 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:23:12,084 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:23:12,462 WARN L226 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_5780aefc-13e5-4d21-988c-82f1b2f77dba/sv-benchmarks/c/eca-rers2012/Problem01_label01.c[16869,16882] [2021-10-11 02:23:12,538 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:23:12,549 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:23:12,678 WARN L226 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_5780aefc-13e5-4d21-988c-82f1b2f77dba/sv-benchmarks/c/eca-rers2012/Problem01_label01.c[16869,16882] [2021-10-11 02:23:12,716 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:23:12,746 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:23:12,748 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:12 WrapperNode [2021-10-11 02:23:12,748 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:23:12,751 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:23:12,751 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:23:12,751 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:23:12,761 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:12" (1/1) ... [2021-10-11 02:23:12,792 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:12" (1/1) ... [2021-10-11 02:23:12,871 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:23:12,872 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:23:12,872 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:23:12,873 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:23:12,884 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:12" (1/1) ... [2021-10-11 02:23:12,884 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:12" (1/1) ... [2021-10-11 02:23:12,891 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:12" (1/1) ... [2021-10-11 02:23:12,904 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:12" (1/1) ... [2021-10-11 02:23:12,937 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:12" (1/1) ... [2021-10-11 02:23:12,966 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:12" (1/1) ... [2021-10-11 02:23:12,974 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:12" (1/1) ... [2021-10-11 02:23:12,985 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:23:12,986 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:23:12,987 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:23:12,987 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:23:12,988 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:12" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5780aefc-13e5-4d21-988c-82f1b2f77dba/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:23:13,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 02:23:13,111 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:23:13,111 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:23:13,112 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:23:15,264 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:23:15,264 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-11 02:23:15,269 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:23:15 BoogieIcfgContainer [2021-10-11 02:23:15,269 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:23:15,271 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:23:15,271 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:23:15,275 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:23:15,275 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:23:11" (1/3) ... [2021-10-11 02:23:15,276 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7701306d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:23:15, skipping insertion in model container [2021-10-11 02:23:15,277 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:12" (2/3) ... [2021-10-11 02:23:15,277 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7701306d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:23:15, skipping insertion in model container [2021-10-11 02:23:15,277 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:23:15" (3/3) ... [2021-10-11 02:23:15,279 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem01_label01.c [2021-10-11 02:23:15,294 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:23:15,298 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-10-11 02:23:15,309 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-11 02:23:15,352 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:23:15,352 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:23:15,352 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:23:15,353 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:23:15,353 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:23:15,353 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:23:15,353 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:23:15,353 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:23:15,369 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states. [2021-10-11 02:23:15,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-10-11 02:23:15,377 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:23:15,378 INFO L422 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] [2021-10-11 02:23:15,378 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:23:15,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:23:15,384 INFO L82 PathProgramCache]: Analyzing trace with hash -1806914392, now seen corresponding path program 1 times [2021-10-11 02:23:15,394 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:23:15,394 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219237381] [2021-10-11 02:23:15,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:23:15,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:23:15,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:23:15,828 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219237381] [2021-10-11 02:23:15,829 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:23:15,830 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:23:15,830 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37897394] [2021-10-11 02:23:15,836 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:23:15,836 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:23:15,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:23:15,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:23:15,855 INFO L87 Difference]: Start difference. First operand 76 states. Second operand 3 states. [2021-10-11 02:23:16,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:23:16,397 INFO L93 Difference]: Finished difference Result 224 states and 428 transitions. [2021-10-11 02:23:16,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:23:16,398 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 71 [2021-10-11 02:23:16,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:23:16,423 INFO L225 Difference]: With dead ends: 224 [2021-10-11 02:23:16,424 INFO L226 Difference]: Without dead ends: 145 [2021-10-11 02:23:16,428 INFO L677 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 [2021-10-11 02:23:16,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2021-10-11 02:23:16,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2021-10-11 02:23:16,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2021-10-11 02:23:16,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 259 transitions. [2021-10-11 02:23:16,506 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 259 transitions. Word has length 71 [2021-10-11 02:23:16,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:23:16,507 INFO L481 AbstractCegarLoop]: Abstraction has 145 states and 259 transitions. [2021-10-11 02:23:16,507 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:23:16,508 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 259 transitions. [2021-10-11 02:23:16,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-10-11 02:23:16,513 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:23:16,514 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1] [2021-10-11 02:23:16,514 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:23:16,514 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:23:16,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:23:16,517 INFO L82 PathProgramCache]: Analyzing trace with hash -1034858885, now seen corresponding path program 1 times [2021-10-11 02:23:16,517 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:23:16,517 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377374507] [2021-10-11 02:23:16,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:23:16,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:23:16,602 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:23:16,603 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377374507] [2021-10-11 02:23:16,603 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:23:16,603 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:23:16,603 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227259519] [2021-10-11 02:23:16,605 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:23:16,605 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:23:16,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:23:16,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:23:16,606 INFO L87 Difference]: Start difference. First operand 145 states and 259 transitions. Second operand 3 states. [2021-10-11 02:23:17,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:23:17,001 INFO L93 Difference]: Finished difference Result 431 states and 774 transitions. [2021-10-11 02:23:17,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:23:17,002 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 77 [2021-10-11 02:23:17,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:23:17,005 INFO L225 Difference]: With dead ends: 431 [2021-10-11 02:23:17,005 INFO L226 Difference]: Without dead ends: 287 [2021-10-11 02:23:17,007 INFO L677 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 [2021-10-11 02:23:17,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2021-10-11 02:23:17,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 287. [2021-10-11 02:23:17,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2021-10-11 02:23:17,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 468 transitions. [2021-10-11 02:23:17,033 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 468 transitions. Word has length 77 [2021-10-11 02:23:17,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:23:17,033 INFO L481 AbstractCegarLoop]: Abstraction has 287 states and 468 transitions. [2021-10-11 02:23:17,034 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:23:17,034 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 468 transitions. [2021-10-11 02:23:17,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-10-11 02:23:17,042 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:23:17,043 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1] [2021-10-11 02:23:17,043 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 02:23:17,043 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:23:17,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:23:17,045 INFO L82 PathProgramCache]: Analyzing trace with hash -1703779527, now seen corresponding path program 1 times [2021-10-11 02:23:17,046 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:23:17,046 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268574191] [2021-10-11 02:23:17,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:23:17,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:23:17,260 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:23:17,261 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268574191] [2021-10-11 02:23:17,261 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:23:17,261 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:23:17,262 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940750972] [2021-10-11 02:23:17,263 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:23:17,263 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:23:17,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:23:17,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:23:17,265 INFO L87 Difference]: Start difference. First operand 287 states and 468 transitions. Second operand 3 states. [2021-10-11 02:23:17,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:23:17,733 INFO L93 Difference]: Finished difference Result 857 states and 1401 transitions. [2021-10-11 02:23:17,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:23:17,734 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 78 [2021-10-11 02:23:17,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:23:17,738 INFO L225 Difference]: With dead ends: 857 [2021-10-11 02:23:17,738 INFO L226 Difference]: Without dead ends: 571 [2021-10-11 02:23:17,740 INFO L677 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 [2021-10-11 02:23:17,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2021-10-11 02:23:17,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 571. [2021-10-11 02:23:17,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 571 states. [2021-10-11 02:23:17,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 860 transitions. [2021-10-11 02:23:17,842 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 860 transitions. Word has length 78 [2021-10-11 02:23:17,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:23:17,843 INFO L481 AbstractCegarLoop]: Abstraction has 571 states and 860 transitions. [2021-10-11 02:23:17,843 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:23:17,843 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 860 transitions. [2021-10-11 02:23:17,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-10-11 02:23:17,845 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:23:17,846 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:23:17,846 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-11 02:23:17,846 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:23:17,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:23:17,847 INFO L82 PathProgramCache]: Analyzing trace with hash 848645935, now seen corresponding path program 1 times [2021-10-11 02:23:17,847 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:23:17,847 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559982793] [2021-10-11 02:23:17,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:23:17,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:23:17,964 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:23:17,965 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559982793] [2021-10-11 02:23:17,965 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:23:17,965 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:23:17,966 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162657559] [2021-10-11 02:23:17,968 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:23:17,968 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:23:17,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:23:17,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:23:17,969 INFO L87 Difference]: Start difference. First operand 571 states and 860 transitions. Second operand 3 states. [2021-10-11 02:23:18,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:23:18,370 INFO L93 Difference]: Finished difference Result 1283 states and 1934 transitions. [2021-10-11 02:23:18,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:23:18,371 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 82 [2021-10-11 02:23:18,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:23:18,375 INFO L225 Difference]: With dead ends: 1283 [2021-10-11 02:23:18,376 INFO L226 Difference]: Without dead ends: 713 [2021-10-11 02:23:18,380 INFO L677 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 [2021-10-11 02:23:18,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 713 states. [2021-10-11 02:23:18,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 713 to 713. [2021-10-11 02:23:18,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 713 states. [2021-10-11 02:23:18,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 713 states to 713 states and 1021 transitions. [2021-10-11 02:23:18,422 INFO L78 Accepts]: Start accepts. Automaton has 713 states and 1021 transitions. Word has length 82 [2021-10-11 02:23:18,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:23:18,423 INFO L481 AbstractCegarLoop]: Abstraction has 713 states and 1021 transitions. [2021-10-11 02:23:18,423 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:23:18,423 INFO L276 IsEmpty]: Start isEmpty. Operand 713 states and 1021 transitions. [2021-10-11 02:23:18,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-10-11 02:23:18,428 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:23:18,429 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:23:18,429 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-11 02:23:18,429 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:23:18,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:23:18,431 INFO L82 PathProgramCache]: Analyzing trace with hash 350097015, now seen corresponding path program 1 times [2021-10-11 02:23:18,434 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:23:18,435 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067991811] [2021-10-11 02:23:18,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:23:18,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:23:18,555 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-11 02:23:18,556 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067991811] [2021-10-11 02:23:18,556 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:23:18,556 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:23:18,557 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342207620] [2021-10-11 02:23:18,557 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:23:18,557 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:23:18,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:23:18,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:23:18,558 INFO L87 Difference]: Start difference. First operand 713 states and 1021 transitions. Second operand 3 states. [2021-10-11 02:23:18,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:23:18,973 INFO L93 Difference]: Finished difference Result 1922 states and 2755 transitions. [2021-10-11 02:23:18,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:23:18,974 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 86 [2021-10-11 02:23:18,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:23:18,987 INFO L225 Difference]: With dead ends: 1922 [2021-10-11 02:23:18,987 INFO L226 Difference]: Without dead ends: 1210 [2021-10-11 02:23:18,989 INFO L677 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 [2021-10-11 02:23:18,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1210 states. [2021-10-11 02:23:19,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1210 to 1068. [2021-10-11 02:23:19,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1068 states. [2021-10-11 02:23:19,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1068 states to 1068 states and 1449 transitions. [2021-10-11 02:23:19,055 INFO L78 Accepts]: Start accepts. Automaton has 1068 states and 1449 transitions. Word has length 86 [2021-10-11 02:23:19,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:23:19,056 INFO L481 AbstractCegarLoop]: Abstraction has 1068 states and 1449 transitions. [2021-10-11 02:23:19,056 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:23:19,056 INFO L276 IsEmpty]: Start isEmpty. Operand 1068 states and 1449 transitions. [2021-10-11 02:23:19,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-10-11 02:23:19,065 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:23:19,065 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:23:19,065 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-11 02:23:19,066 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:23:19,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:23:19,068 INFO L82 PathProgramCache]: Analyzing trace with hash 2124316788, now seen corresponding path program 1 times [2021-10-11 02:23:19,069 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:23:19,069 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524264298] [2021-10-11 02:23:19,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:23:19,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:23:19,164 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:23:19,164 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524264298] [2021-10-11 02:23:19,164 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:23:19,165 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:23:19,165 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065095274] [2021-10-11 02:23:19,165 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:23:19,166 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:23:19,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:23:19,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:23:19,167 INFO L87 Difference]: Start difference. First operand 1068 states and 1449 transitions. Second operand 3 states. [2021-10-11 02:23:19,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:23:19,562 INFO L93 Difference]: Finished difference Result 1993 states and 2718 transitions. [2021-10-11 02:23:19,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:23:19,566 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 93 [2021-10-11 02:23:19,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:23:19,570 INFO L225 Difference]: With dead ends: 1993 [2021-10-11 02:23:19,570 INFO L226 Difference]: Without dead ends: 855 [2021-10-11 02:23:19,572 INFO L677 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 [2021-10-11 02:23:19,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 855 states. [2021-10-11 02:23:19,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 855 to 713. [2021-10-11 02:23:19,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 713 states. [2021-10-11 02:23:19,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 713 states to 713 states and 835 transitions. [2021-10-11 02:23:19,593 INFO L78 Accepts]: Start accepts. Automaton has 713 states and 835 transitions. Word has length 93 [2021-10-11 02:23:19,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:23:19,594 INFO L481 AbstractCegarLoop]: Abstraction has 713 states and 835 transitions. [2021-10-11 02:23:19,594 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:23:19,594 INFO L276 IsEmpty]: Start isEmpty. Operand 713 states and 835 transitions. [2021-10-11 02:23:19,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-10-11 02:23:19,596 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:23:19,596 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 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] [2021-10-11 02:23:19,596 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-11 02:23:19,596 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:23:19,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:23:19,597 INFO L82 PathProgramCache]: Analyzing trace with hash -1470708005, now seen corresponding path program 1 times [2021-10-11 02:23:19,597 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:23:19,597 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248052668] [2021-10-11 02:23:19,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:23:19,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:23:19,639 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-11 02:23:19,640 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248052668] [2021-10-11 02:23:19,640 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:23:19,640 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:23:19,640 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545371726] [2021-10-11 02:23:19,641 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:23:19,641 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:23:19,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:23:19,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:23:19,642 INFO L87 Difference]: Start difference. First operand 713 states and 835 transitions. Second operand 3 states. [2021-10-11 02:23:20,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:23:20,010 INFO L93 Difference]: Finished difference Result 1780 states and 2104 transitions. [2021-10-11 02:23:20,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:23:20,010 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 95 [2021-10-11 02:23:20,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:23:20,016 INFO L225 Difference]: With dead ends: 1780 [2021-10-11 02:23:20,016 INFO L226 Difference]: Without dead ends: 997 [2021-10-11 02:23:20,018 INFO L677 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 [2021-10-11 02:23:20,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 997 states. [2021-10-11 02:23:20,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 997 to 855. [2021-10-11 02:23:20,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 855 states. [2021-10-11 02:23:20,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 855 states to 855 states and 1032 transitions. [2021-10-11 02:23:20,046 INFO L78 Accepts]: Start accepts. Automaton has 855 states and 1032 transitions. Word has length 95 [2021-10-11 02:23:20,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:23:20,047 INFO L481 AbstractCegarLoop]: Abstraction has 855 states and 1032 transitions. [2021-10-11 02:23:20,047 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:23:20,047 INFO L276 IsEmpty]: Start isEmpty. Operand 855 states and 1032 transitions. [2021-10-11 02:23:20,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-10-11 02:23:20,055 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:23:20,055 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:23:20,056 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-11 02:23:20,056 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:23:20,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:23:20,056 INFO L82 PathProgramCache]: Analyzing trace with hash 32929294, now seen corresponding path program 1 times [2021-10-11 02:23:20,057 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:23:20,057 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171225237] [2021-10-11 02:23:20,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:23:20,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:23:20,158 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-10-11 02:23:20,159 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171225237] [2021-10-11 02:23:20,159 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:23:20,159 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:23:20,160 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360340126] [2021-10-11 02:23:20,160 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:23:20,160 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:23:20,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:23:20,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:23:20,161 INFO L87 Difference]: Start difference. First operand 855 states and 1032 transitions. Second operand 3 states. [2021-10-11 02:23:20,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:23:20,514 INFO L93 Difference]: Finished difference Result 1922 states and 2320 transitions. [2021-10-11 02:23:20,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:23:20,514 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 130 [2021-10-11 02:23:20,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:23:20,523 INFO L225 Difference]: With dead ends: 1922 [2021-10-11 02:23:20,523 INFO L226 Difference]: Without dead ends: 997 [2021-10-11 02:23:20,525 INFO L677 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 [2021-10-11 02:23:20,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 997 states. [2021-10-11 02:23:20,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 997 to 997. [2021-10-11 02:23:20,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 997 states. [2021-10-11 02:23:20,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 997 states to 997 states and 1185 transitions. [2021-10-11 02:23:20,555 INFO L78 Accepts]: Start accepts. Automaton has 997 states and 1185 transitions. Word has length 130 [2021-10-11 02:23:20,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:23:20,556 INFO L481 AbstractCegarLoop]: Abstraction has 997 states and 1185 transitions. [2021-10-11 02:23:20,556 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:23:20,556 INFO L276 IsEmpty]: Start isEmpty. Operand 997 states and 1185 transitions. [2021-10-11 02:23:20,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-10-11 02:23:20,560 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:23:20,560 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:23:20,561 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-11 02:23:20,561 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:23:20,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:23:20,561 INFO L82 PathProgramCache]: Analyzing trace with hash 1310569148, now seen corresponding path program 1 times [2021-10-11 02:23:20,562 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:23:20,562 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220460026] [2021-10-11 02:23:20,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:23:20,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:23:20,704 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 90 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-10-11 02:23:20,705 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220460026] [2021-10-11 02:23:20,709 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:23:20,710 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:23:20,710 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916535185] [2021-10-11 02:23:20,710 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:23:20,712 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:23:20,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:23:20,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:23:20,713 INFO L87 Difference]: Start difference. First operand 997 states and 1185 transitions. Second operand 4 states. [2021-10-11 02:23:21,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:23:21,187 INFO L93 Difference]: Finished difference Result 2064 states and 2455 transitions. [2021-10-11 02:23:21,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:23:21,188 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 150 [2021-10-11 02:23:21,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:23:21,195 INFO L225 Difference]: With dead ends: 2064 [2021-10-11 02:23:21,195 INFO L226 Difference]: Without dead ends: 1068 [2021-10-11 02:23:21,197 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:23:21,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1068 states. [2021-10-11 02:23:21,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1068 to 997. [2021-10-11 02:23:21,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 997 states. [2021-10-11 02:23:21,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 997 states to 997 states and 1173 transitions. [2021-10-11 02:23:21,223 INFO L78 Accepts]: Start accepts. Automaton has 997 states and 1173 transitions. Word has length 150 [2021-10-11 02:23:21,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:23:21,224 INFO L481 AbstractCegarLoop]: Abstraction has 997 states and 1173 transitions. [2021-10-11 02:23:21,225 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:23:21,226 INFO L276 IsEmpty]: Start isEmpty. Operand 997 states and 1173 transitions. [2021-10-11 02:23:21,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-10-11 02:23:21,229 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:23:21,229 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:23:21,230 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-11 02:23:21,230 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:23:21,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:23:21,230 INFO L82 PathProgramCache]: Analyzing trace with hash 1220398593, now seen corresponding path program 1 times [2021-10-11 02:23:21,231 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:23:21,231 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204318761] [2021-10-11 02:23:21,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:23:21,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:23:21,380 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 129 proven. 11 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2021-10-11 02:23:21,380 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204318761] [2021-10-11 02:23:21,381 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1971716914] [2021-10-11 02:23:21,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5780aefc-13e5-4d21-988c-82f1b2f77dba/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:23:21,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:23:21,529 INFO L263 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 02:23:21,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:23:21,855 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2021-10-11 02:23:21,855 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:23:22,019 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2021-10-11 02:23:22,019 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-11 02:23:22,019 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 5 [2021-10-11 02:23:22,020 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772054717] [2021-10-11 02:23:22,020 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:23:22,021 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:23:22,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:23:22,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:23:22,022 INFO L87 Difference]: Start difference. First operand 997 states and 1173 transitions. Second operand 3 states. [2021-10-11 02:23:22,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:23:22,387 INFO L93 Difference]: Finished difference Result 2062 states and 2430 transitions. [2021-10-11 02:23:22,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:23:22,388 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 167 [2021-10-11 02:23:22,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:23:22,389 INFO L225 Difference]: With dead ends: 2062 [2021-10-11 02:23:22,389 INFO L226 Difference]: Without dead ends: 0 [2021-10-11 02:23:22,391 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 336 GetRequests, 332 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:23:22,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-11 02:23:22,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-11 02:23:22,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-10-11 02:23:22,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-11 02:23:22,392 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 167 [2021-10-11 02:23:22,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:23:22,392 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 02:23:22,393 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:23:22,393 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-11 02:23:22,393 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-11 02:23:22,607 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-10-11 02:23:22,608 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-11 02:23:22,779 WARN L197 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 24 [2021-10-11 02:23:22,892 WARN L197 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 24 [2021-10-11 02:23:22,896 INFO L262 CegarLoopResult]: For program point L102(lines 102 400) no Hoare annotation was computed. [2021-10-11 02:23:22,896 INFO L262 CegarLoopResult]: For program point L598(line 598) no Hoare annotation was computed. [2021-10-11 02:23:22,896 INFO L262 CegarLoopResult]: For program point L334(lines 334 400) no Hoare annotation was computed. [2021-10-11 02:23:22,896 INFO L262 CegarLoopResult]: For program point L302(lines 302 400) no Hoare annotation was computed. [2021-10-11 02:23:22,896 INFO L262 CegarLoopResult]: For program point L170(lines 170 400) no Hoare annotation was computed. [2021-10-11 02:23:22,896 INFO L262 CegarLoopResult]: For program point L204(lines 204 400) no Hoare annotation was computed. [2021-10-11 02:23:22,897 INFO L262 CegarLoopResult]: For program point L72(lines 72 400) no Hoare annotation was computed. [2021-10-11 02:23:22,897 INFO L262 CegarLoopResult]: For program point L271(lines 271 400) no Hoare annotation was computed. [2021-10-11 02:23:22,897 INFO L262 CegarLoopResult]: For program point L139(lines 139 400) no Hoare annotation was computed. [2021-10-11 02:23:22,897 INFO L262 CegarLoopResult]: For program point L371(lines 371 400) no Hoare annotation was computed. [2021-10-11 02:23:22,897 INFO L262 CegarLoopResult]: For program point L107(lines 107 400) no Hoare annotation was computed. [2021-10-11 02:23:22,897 INFO L262 CegarLoopResult]: For program point L41(lines 41 400) no Hoare annotation was computed. [2021-10-11 02:23:22,898 INFO L262 CegarLoopResult]: For program point L339(lines 339 400) no Hoare annotation was computed. [2021-10-11 02:23:22,898 INFO L262 CegarLoopResult]: For program point L207(lines 207 400) no Hoare annotation was computed. [2021-10-11 02:23:22,898 INFO L262 CegarLoopResult]: For program point L75(lines 75 400) no Hoare annotation was computed. [2021-10-11 02:23:22,898 INFO L262 CegarLoopResult]: For program point L373(lines 373 400) no Hoare annotation was computed. [2021-10-11 02:23:22,898 INFO L262 CegarLoopResult]: For program point L241(lines 241 400) no Hoare annotation was computed. [2021-10-11 02:23:22,899 INFO L262 CegarLoopResult]: For program point L175(lines 175 400) no Hoare annotation was computed. [2021-10-11 02:23:22,899 INFO L262 CegarLoopResult]: For program point L275(lines 275 400) no Hoare annotation was computed. [2021-10-11 02:23:22,899 INFO L262 CegarLoopResult]: For program point L375(lines 375 400) no Hoare annotation was computed. [2021-10-11 02:23:22,899 INFO L262 CegarLoopResult]: For program point L309(lines 309 400) no Hoare annotation was computed. [2021-10-11 02:23:22,899 INFO L262 CegarLoopResult]: For program point L45(lines 45 400) no Hoare annotation was computed. [2021-10-11 02:23:22,900 INFO L262 CegarLoopResult]: For program point L343(lines 343 400) no Hoare annotation was computed. [2021-10-11 02:23:22,900 INFO L262 CegarLoopResult]: For program point L112(lines 112 400) no Hoare annotation was computed. [2021-10-11 02:23:22,900 INFO L262 CegarLoopResult]: For program point L278(lines 278 400) no Hoare annotation was computed. [2021-10-11 02:23:22,902 INFO L262 CegarLoopResult]: For program point L146(lines 146 400) no Hoare annotation was computed. [2021-10-11 02:23:22,902 INFO L262 CegarLoopResult]: For program point L213(lines 213 400) no Hoare annotation was computed. [2021-10-11 02:23:22,902 INFO L262 CegarLoopResult]: For program point L82(lines 82 400) no Hoare annotation was computed. [2021-10-11 02:23:22,902 INFO L262 CegarLoopResult]: For program point L347(lines 347 400) no Hoare annotation was computed. [2021-10-11 02:23:22,902 INFO L262 CegarLoopResult]: For program point L248(lines 248 400) no Hoare annotation was computed. [2021-10-11 02:23:22,902 INFO L262 CegarLoopResult]: For program point L183(lines 183 400) no Hoare annotation was computed. [2021-10-11 02:23:22,902 INFO L262 CegarLoopResult]: For program point L150(lines 150 400) no Hoare annotation was computed. [2021-10-11 02:23:22,903 INFO L262 CegarLoopResult]: For program point L382(lines 382 400) no Hoare annotation was computed. [2021-10-11 02:23:22,903 INFO L262 CegarLoopResult]: For program point L316(lines 316 400) no Hoare annotation was computed. [2021-10-11 02:23:22,903 INFO L262 CegarLoopResult]: For program point L283(lines 283 400) no Hoare annotation was computed. [2021-10-11 02:23:22,903 INFO L262 CegarLoopResult]: For program point L118(lines 118 400) no Hoare annotation was computed. [2021-10-11 02:23:22,903 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-11 02:23:22,903 INFO L262 CegarLoopResult]: For program point L218(lines 218 400) no Hoare annotation was computed. [2021-10-11 02:23:22,903 INFO L262 CegarLoopResult]: For program point L53(lines 53 400) no Hoare annotation was computed. [2021-10-11 02:23:22,904 INFO L262 CegarLoopResult]: For program point L154(lines 154 400) no Hoare annotation was computed. [2021-10-11 02:23:22,905 INFO L258 CegarLoopResult]: At program point L584(lines 40 585) the Hoare annotation is: (let ((.cse4 (<= ~a17~0 0)) (.cse1 (= ~a7~0 1)) (.cse2 (<= ~a16~0 5)) (.cse3 (= ~a20~0 1)) (.cse0 (= ~a21~0 1)) (.cse5 (<= ~a7~0 0)) (.cse6 (= ~a17~0 1))) (or (and .cse0 .cse1 .cse2 .cse3) (and .cse1 .cse4) (and .cse4 .cse5) (and .cse1 (<= ~a16~0 4)) (and .cse1 .cse2 .cse3 .cse6) (and .cse0 .cse5 .cse6))) [2021-10-11 02:23:22,905 INFO L262 CegarLoopResult]: For program point L188(lines 188 400) no Hoare annotation was computed. [2021-10-11 02:23:22,906 INFO L262 CegarLoopResult]: For program point L387(lines 387 400) no Hoare annotation was computed. [2021-10-11 02:23:22,906 INFO L262 CegarLoopResult]: For program point L288(lines 288 400) no Hoare annotation was computed. [2021-10-11 02:23:22,906 INFO L262 CegarLoopResult]: For program point L255(lines 255 400) no Hoare annotation was computed. [2021-10-11 02:23:22,906 INFO L262 CegarLoopResult]: For program point L90(lines 90 400) no Hoare annotation was computed. [2021-10-11 02:23:22,906 INFO L262 CegarLoopResult]: For program point L355(lines 355 400) no Hoare annotation was computed. [2021-10-11 02:23:22,906 INFO L262 CegarLoopResult]: For program point L322(lines 322 400) no Hoare annotation was computed. [2021-10-11 02:23:22,906 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-11 02:23:22,906 INFO L262 CegarLoopResult]: For program point L124(lines 124 400) no Hoare annotation was computed. [2021-10-11 02:23:22,907 INFO L265 CegarLoopResult]: At program point L587(lines 587 604) the Hoare annotation is: true [2021-10-11 02:23:22,907 INFO L262 CegarLoopResult]: For program point L455-1(lines 40 585) no Hoare annotation was computed. [2021-10-11 02:23:22,907 INFO L262 CegarLoopResult]: For program point L224(lines 224 400) no Hoare annotation was computed. [2021-10-11 02:23:22,907 INFO L262 CegarLoopResult]: For program point L158(lines 158 400) no Hoare annotation was computed. [2021-10-11 02:23:22,907 INFO L262 CegarLoopResult]: For program point L59(lines 59 400) no Hoare annotation was computed. [2021-10-11 02:23:22,907 INFO L262 CegarLoopResult]: For program point L94(lines 94 400) no Hoare annotation was computed. [2021-10-11 02:23:22,908 INFO L262 CegarLoopResult]: For program point L458-1(lines 40 585) no Hoare annotation was computed. [2021-10-11 02:23:22,908 INFO L262 CegarLoopResult]: For program point L392(lines 392 400) no Hoare annotation was computed. [2021-10-11 02:23:22,908 INFO L262 CegarLoopResult]: For program point L326(lines 326 400) no Hoare annotation was computed. [2021-10-11 02:23:22,908 INFO L262 CegarLoopResult]: For program point L260(lines 260 400) no Hoare annotation was computed. [2021-10-11 02:23:22,908 INFO L262 CegarLoopResult]: For program point L459(line 459) no Hoare annotation was computed. [2021-10-11 02:23:22,908 INFO L262 CegarLoopResult]: For program point L228(lines 228 400) no Hoare annotation was computed. [2021-10-11 02:23:22,908 INFO L262 CegarLoopResult]: For program point L162(lines 162 400) no Hoare annotation was computed. [2021-10-11 02:23:22,912 INFO L262 CegarLoopResult]: For program point L129(lines 129 400) no Hoare annotation was computed. [2021-10-11 02:23:22,913 INFO L262 CegarLoopResult]: For program point L328(lines 328 400) no Hoare annotation was computed. [2021-10-11 02:23:22,913 INFO L262 CegarLoopResult]: For program point L196(lines 196 400) no Hoare annotation was computed. [2021-10-11 02:23:22,913 INFO L262 CegarLoopResult]: For program point L64(lines 64 400) no Hoare annotation was computed. [2021-10-11 02:23:22,914 INFO L258 CegarLoopResult]: At program point L593-2(lines 593 603) the Hoare annotation is: (let ((.cse4 (<= ~a17~0 0)) (.cse1 (= ~a7~0 1)) (.cse2 (<= ~a16~0 5)) (.cse3 (= ~a20~0 1)) (.cse0 (= ~a21~0 1)) (.cse5 (<= ~a7~0 0)) (.cse6 (= ~a17~0 1))) (or (and .cse0 .cse1 .cse2 .cse3) (and .cse1 .cse4) (and .cse4 .cse5) (and .cse1 (<= ~a16~0 4)) (and .cse1 .cse2 .cse3 .cse6) (and .cse0 .cse5 .cse6))) [2021-10-11 02:23:22,915 INFO L262 CegarLoopResult]: For program point L296(lines 296 400) no Hoare annotation was computed. [2021-10-11 02:23:22,915 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 459) no Hoare annotation was computed. [2021-10-11 02:23:22,915 INFO L262 CegarLoopResult]: For program point L363(lines 363 400) no Hoare annotation was computed. [2021-10-11 02:23:22,916 INFO L262 CegarLoopResult]: For program point L199(lines 199 400) no Hoare annotation was computed. [2021-10-11 02:23:22,916 INFO L262 CegarLoopResult]: For program point L365(lines 365 400) no Hoare annotation was computed. [2021-10-11 02:23:22,916 INFO L262 CegarLoopResult]: For program point L266(lines 266 400) no Hoare annotation was computed. [2021-10-11 02:23:22,916 INFO L262 CegarLoopResult]: For program point L233(lines 233 400) no Hoare annotation was computed. [2021-10-11 02:23:22,916 INFO L262 CegarLoopResult]: For program point L134(lines 134 400) no Hoare annotation was computed. [2021-10-11 02:23:22,951 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:23:22 BoogieIcfgContainer [2021-10-11 02:23:22,952 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:23:22,952 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:23:22,952 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:23:22,953 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:23:22,953 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:23:15" (3/4) ... [2021-10-11 02:23:22,956 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-11 02:23:22,990 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 102 nodes and edges [2021-10-11 02:23:22,992 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2021-10-11 02:23:22,994 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2021-10-11 02:23:22,995 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-10-11 02:23:23,165 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5780aefc-13e5-4d21-988c-82f1b2f77dba/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:23:23,165 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:23:23,166 INFO L168 Benchmark]: Toolchain (without parser) took 11205.00 ms. Allocated memory was 117.4 MB in the beginning and 228.6 MB in the end (delta: 111.1 MB). Free memory was 85.8 MB in the beginning and 114.6 MB in the end (delta: -28.8 MB). Peak memory consumption was 82.8 MB. Max. memory is 16.1 GB. [2021-10-11 02:23:23,166 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 81.8 MB. Free memory is still 41.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:23:23,167 INFO L168 Benchmark]: CACSL2BoogieTranslator took 781.59 ms. Allocated memory is still 117.4 MB. Free memory was 85.6 MB in the beginning and 77.2 MB in the end (delta: 8.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-11 02:23:23,168 INFO L168 Benchmark]: Boogie Procedure Inliner took 120.68 ms. Allocated memory is still 117.4 MB. Free memory was 77.2 MB in the beginning and 71.6 MB in the end (delta: 5.6 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-11 02:23:23,168 INFO L168 Benchmark]: Boogie Preprocessor took 113.44 ms. Allocated memory is still 117.4 MB. Free memory was 71.6 MB in the beginning and 67.4 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-11 02:23:23,169 INFO L168 Benchmark]: RCFGBuilder took 2282.90 ms. Allocated memory was 117.4 MB in the beginning and 153.1 MB in the end (delta: 35.7 MB). Free memory was 67.4 MB in the beginning and 90.9 MB in the end (delta: -23.5 MB). Peak memory consumption was 50.2 MB. Max. memory is 16.1 GB. [2021-10-11 02:23:23,169 INFO L168 Benchmark]: TraceAbstraction took 7680.74 ms. Allocated memory was 153.1 MB in the beginning and 228.6 MB in the end (delta: 75.5 MB). Free memory was 90.9 MB in the beginning and 130.3 MB in the end (delta: -39.4 MB). Peak memory consumption was 36.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:23:23,170 INFO L168 Benchmark]: Witness Printer took 212.62 ms. Allocated memory is still 228.6 MB. Free memory was 130.3 MB in the beginning and 114.6 MB in the end (delta: 15.7 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2021-10-11 02:23:23,172 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 81.8 MB. Free memory is still 41.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 781.59 ms. Allocated memory is still 117.4 MB. Free memory was 85.6 MB in the beginning and 77.2 MB in the end (delta: 8.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 120.68 ms. Allocated memory is still 117.4 MB. Free memory was 77.2 MB in the beginning and 71.6 MB in the end (delta: 5.6 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 113.44 ms. Allocated memory is still 117.4 MB. Free memory was 71.6 MB in the beginning and 67.4 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2282.90 ms. Allocated memory was 117.4 MB in the beginning and 153.1 MB in the end (delta: 35.7 MB). Free memory was 67.4 MB in the beginning and 90.9 MB in the end (delta: -23.5 MB). Peak memory consumption was 50.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 7680.74 ms. Allocated memory was 153.1 MB in the beginning and 228.6 MB in the end (delta: 75.5 MB). Free memory was 90.9 MB in the beginning and 130.3 MB in the end (delta: -39.4 MB). Peak memory consumption was 36.1 MB. Max. memory is 16.1 GB. * Witness Printer took 212.62 ms. Allocated memory is still 228.6 MB. Free memory was 130.3 MB in the beginning and 114.6 MB in the end (delta: 15.7 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 459]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: (((((((a21 == 1 && a7 == 1) && a16 <= 5) && a20 == 1) || (a7 == 1 && a17 <= 0)) || (a17 <= 0 && a7 <= 0)) || (a7 == 1 && a16 <= 4)) || (((a7 == 1 && a16 <= 5) && a20 == 1) && a17 == 1)) || ((a21 == 1 && a7 <= 0) && a17 == 1) - InvariantResult [Line: 587]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 593]: Loop Invariant Derived loop invariant: (((((((a21 == 1 && a7 == 1) && a16 <= 5) && a20 == 1) || (a7 == 1 && a17 <= 0)) || (a17 <= 0 && a7 <= 0)) || (a7 == 1 && a16 <= 4)) || (((a7 == 1 && a16 <= 5) && a20 == 1) && a17 == 1)) || ((a21 == 1 && a7 <= 0) && a17 == 1) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 76 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 7.2s, OverallIterations: 10, TraceHistogramMax: 6, AutomataDifference: 4.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 589 SDtfs, 637 SDslu, 38 SDs, 0 SdLazy, 2103 SolverSat, 542 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 358 GetRequests, 344 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1068occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 10 MinimizatonAttempts, 497 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 41 NumberOfFragments, 117 HoareAnnotationTreeSize, 3 FomulaSimplifications, 734 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 102 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 1196 NumberOfCodeBlocks, 1196 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 1351 ConstructedInterpolants, 0 QuantifiedInterpolants, 360423 SizeOfPredicates, 0 NumberOfNonLiveVariables, 421 ConjunctsInSsa, 2 ConjunctsInUnsatCore, 12 InterpolantComputations, 11 PerfectInterpolantSequences, 936/947 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...