./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem01_label03.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_1a2d9453-ebef-436a-8a3e-8800a29ecc97/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_1a2d9453-ebef-436a-8a3e-8800a29ecc97/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_1a2d9453-ebef-436a-8a3e-8800a29ecc97/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_1a2d9453-ebef-436a-8a3e-8800a29ecc97/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem01_label03.c -s /tmp/vcloud-vcloud-master/worker/run_dir_1a2d9453-ebef-436a-8a3e-8800a29ecc97/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_1a2d9453-ebef-436a-8a3e-8800a29ecc97/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9cd4142a6e7abbee29b4d6d57e38649ee7b6cc45 ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2020-12-09 13:54:49,786 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 13:54:49,788 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 13:54:49,809 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 13:54:49,809 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 13:54:49,810 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 13:54:49,811 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 13:54:49,813 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 13:54:49,814 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 13:54:49,815 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 13:54:49,816 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 13:54:49,817 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 13:54:49,817 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 13:54:49,818 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 13:54:49,819 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 13:54:49,820 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 13:54:49,820 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 13:54:49,821 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 13:54:49,822 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 13:54:49,824 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 13:54:49,826 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 13:54:49,827 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 13:54:49,829 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 13:54:49,830 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 13:54:49,833 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 13:54:49,833 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 13:54:49,833 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 13:54:49,834 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 13:54:49,835 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 13:54:49,836 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 13:54:49,836 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 13:54:49,837 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 13:54:49,838 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 13:54:49,839 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 13:54:49,840 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 13:54:49,840 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 13:54:49,841 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 13:54:49,841 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 13:54:49,841 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 13:54:49,842 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 13:54:49,843 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 13:54:49,843 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_1a2d9453-ebef-436a-8a3e-8800a29ecc97/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 13:54:49,866 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 13:54:49,866 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 13:54:49,867 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 13:54:49,867 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 13:54:49,867 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 13:54:49,867 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 13:54:49,867 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 13:54:49,868 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 13:54:49,868 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 13:54:49,868 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 13:54:49,868 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 13:54:49,868 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 13:54:49,868 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 13:54:49,869 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 13:54:49,869 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 13:54:49,869 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 13:54:49,870 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 13:54:49,870 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 13:54:49,870 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 13:54:49,870 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 13:54:49,870 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 13:54:49,870 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 13:54:49,871 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 13:54:49,871 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 13:54:49,871 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 13:54:49,871 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 13:54:49,871 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 13:54:49,871 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 13:54:49,872 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 13:54:49,872 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 13:54:49,872 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 13:54:49,872 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 13:54:49,872 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 13:54:49,873 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 13:54:49,873 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 13:54:49,873 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 13:54:49,873 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 13:54:49,873 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 13:54:49,873 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 13:54:49,874 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_1a2d9453-ebef-436a-8a3e-8800a29ecc97/bin/utaipan/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_1a2d9453-ebef-436a-8a3e-8800a29ecc97/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9cd4142a6e7abbee29b4d6d57e38649ee7b6cc45 [2020-12-09 13:54:50,056 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 13:54:50,075 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 13:54:50,078 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 13:54:50,079 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 13:54:50,079 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 13:54:50,080 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_1a2d9453-ebef-436a-8a3e-8800a29ecc97/bin/utaipan/../../sv-benchmarks/c/eca-rers2012/Problem01_label03.c [2020-12-09 13:54:50,120 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_1a2d9453-ebef-436a-8a3e-8800a29ecc97/bin/utaipan/data/3f063d90e/8a8f474d92814beb8f53301b1b3744a4/FLAG43c81aea5 [2020-12-09 13:54:50,541 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 13:54:50,541 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_1a2d9453-ebef-436a-8a3e-8800a29ecc97/sv-benchmarks/c/eca-rers2012/Problem01_label03.c [2020-12-09 13:54:50,550 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_1a2d9453-ebef-436a-8a3e-8800a29ecc97/bin/utaipan/data/3f063d90e/8a8f474d92814beb8f53301b1b3744a4/FLAG43c81aea5 [2020-12-09 13:54:50,559 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_1a2d9453-ebef-436a-8a3e-8800a29ecc97/bin/utaipan/data/3f063d90e/8a8f474d92814beb8f53301b1b3744a4 [2020-12-09 13:54:50,561 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 13:54:50,562 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 13:54:50,564 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 13:54:50,564 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 13:54:50,566 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 13:54:50,567 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 01:54:50" (1/1) ... [2020-12-09 13:54:50,568 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@783d3cee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:54:50, skipping insertion in model container [2020-12-09 13:54:50,568 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 01:54:50" (1/1) ... [2020-12-09 13:54:50,574 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 13:54:50,605 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 13:54:50,802 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_1a2d9453-ebef-436a-8a3e-8800a29ecc97/sv-benchmarks/c/eca-rers2012/Problem01_label03.c[21586,21599] [2020-12-09 13:54:50,814 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 13:54:50,820 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 13:54:50,881 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_1a2d9453-ebef-436a-8a3e-8800a29ecc97/sv-benchmarks/c/eca-rers2012/Problem01_label03.c[21586,21599] [2020-12-09 13:54:50,885 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 13:54:50,896 INFO L208 MainTranslator]: Completed translation [2020-12-09 13:54:50,896 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:54:50 WrapperNode [2020-12-09 13:54:50,897 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 13:54:50,897 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 13:54:50,897 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 13:54:50,898 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 13:54:50,905 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:54:50" (1/1) ... [2020-12-09 13:54:50,924 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:54:50" (1/1) ... [2020-12-09 13:54:50,981 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 13:54:50,982 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 13:54:50,982 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 13:54:50,982 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 13:54:50,990 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:54:50" (1/1) ... [2020-12-09 13:54:50,991 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:54:50" (1/1) ... [2020-12-09 13:54:50,995 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:54:50" (1/1) ... [2020-12-09 13:54:50,995 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:54:50" (1/1) ... [2020-12-09 13:54:51,020 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:54:50" (1/1) ... [2020-12-09 13:54:51,028 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:54:50" (1/1) ... [2020-12-09 13:54:51,034 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:54:50" (1/1) ... [2020-12-09 13:54:51,041 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 13:54:51,042 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 13:54:51,042 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 13:54:51,042 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 13:54:51,043 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:54:50" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1a2d9453-ebef-436a-8a3e-8800a29ecc97/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 13:54:51,096 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 13:54:51,096 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 13:54:51,097 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 13:54:51,097 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 13:54:52,374 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 13:54:52,374 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2020-12-09 13:54:52,376 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 01:54:52 BoogieIcfgContainer [2020-12-09 13:54:52,376 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 13:54:52,377 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 13:54:52,377 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 13:54:52,379 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 13:54:52,380 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 01:54:50" (1/3) ... [2020-12-09 13:54:52,380 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c5a58a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 01:54:52, skipping insertion in model container [2020-12-09 13:54:52,380 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:54:50" (2/3) ... [2020-12-09 13:54:52,381 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c5a58a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 01:54:52, skipping insertion in model container [2020-12-09 13:54:52,381 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 01:54:52" (3/3) ... [2020-12-09 13:54:52,382 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem01_label03.c [2020-12-09 13:54:52,391 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 13:54:52,394 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-09 13:54:52,400 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-09 13:54:52,417 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 13:54:52,417 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 13:54:52,417 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 13:54:52,417 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 13:54:52,418 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 13:54:52,418 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 13:54:52,418 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 13:54:52,418 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 13:54:52,427 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states. [2020-12-09 13:54:52,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-12-09 13:54:52,433 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 13:54:52,433 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] [2020-12-09 13:54:52,434 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 13:54:52,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 13:54:52,437 INFO L82 PathProgramCache]: Analyzing trace with hash -1806904664, now seen corresponding path program 1 times [2020-12-09 13:54:52,443 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 13:54:52,444 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102957942] [2020-12-09 13:54:52,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 13:54:52,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 13:54:52,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 13:54:52,775 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102957942] [2020-12-09 13:54:52,776 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 13:54:52,776 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 13:54:52,776 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841496556] [2020-12-09 13:54:52,779 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 13:54:52,780 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 13:54:52,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 13:54:52,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 13:54:52,790 INFO L87 Difference]: Start difference. First operand 76 states. Second operand 4 states. [2020-12-09 13:54:53,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 13:54:53,294 INFO L93 Difference]: Finished difference Result 297 states and 569 transitions. [2020-12-09 13:54:53,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 13:54:53,295 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 71 [2020-12-09 13:54:53,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 13:54:53,307 INFO L225 Difference]: With dead ends: 297 [2020-12-09 13:54:53,307 INFO L226 Difference]: Without dead ends: 216 [2020-12-09 13:54:53,310 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 13:54:53,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2020-12-09 13:54:53,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2020-12-09 13:54:53,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2020-12-09 13:54:53,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 336 transitions. [2020-12-09 13:54:53,354 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 336 transitions. Word has length 71 [2020-12-09 13:54:53,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 13:54:53,355 INFO L481 AbstractCegarLoop]: Abstraction has 216 states and 336 transitions. [2020-12-09 13:54:53,355 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 13:54:53,355 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 336 transitions. [2020-12-09 13:54:53,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-12-09 13:54:53,359 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 13:54:53,359 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] [2020-12-09 13:54:53,359 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 13:54:53,360 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 13:54:53,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 13:54:53,360 INFO L82 PathProgramCache]: Analyzing trace with hash -1703769799, now seen corresponding path program 1 times [2020-12-09 13:54:53,361 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 13:54:53,361 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237539936] [2020-12-09 13:54:53,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 13:54:53,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 13:54:53,510 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 13:54:53,510 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237539936] [2020-12-09 13:54:53,511 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 13:54:53,511 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 13:54:53,511 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306462300] [2020-12-09 13:54:53,512 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 13:54:53,512 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 13:54:53,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 13:54:53,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 13:54:53,513 INFO L87 Difference]: Start difference. First operand 216 states and 336 transitions. Second operand 4 states. [2020-12-09 13:54:53,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 13:54:53,944 INFO L93 Difference]: Finished difference Result 500 states and 848 transitions. [2020-12-09 13:54:53,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 13:54:53,945 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 78 [2020-12-09 13:54:53,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 13:54:53,948 INFO L225 Difference]: With dead ends: 500 [2020-12-09 13:54:53,948 INFO L226 Difference]: Without dead ends: 287 [2020-12-09 13:54:53,950 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 [2020-12-09 13:54:53,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2020-12-09 13:54:53,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 216. [2020-12-09 13:54:53,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2020-12-09 13:54:53,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 293 transitions. [2020-12-09 13:54:53,966 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 293 transitions. Word has length 78 [2020-12-09 13:54:53,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 13:54:53,967 INFO L481 AbstractCegarLoop]: Abstraction has 216 states and 293 transitions. [2020-12-09 13:54:53,967 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 13:54:53,967 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 293 transitions. [2020-12-09 13:54:53,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-12-09 13:54:53,970 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 13:54:53,970 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] [2020-12-09 13:54:53,970 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-09 13:54:53,970 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 13:54:53,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 13:54:53,971 INFO L82 PathProgramCache]: Analyzing trace with hash 350106743, now seen corresponding path program 1 times [2020-12-09 13:54:53,971 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 13:54:53,971 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324087182] [2020-12-09 13:54:53,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 13:54:53,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 13:54:54,036 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 13:54:54,036 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324087182] [2020-12-09 13:54:54,037 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 13:54:54,037 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 13:54:54,037 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556277308] [2020-12-09 13:54:54,037 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 13:54:54,037 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 13:54:54,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 13:54:54,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 13:54:54,038 INFO L87 Difference]: Start difference. First operand 216 states and 293 transitions. Second operand 4 states. [2020-12-09 13:54:54,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 13:54:54,296 INFO L93 Difference]: Finished difference Result 573 states and 802 transitions. [2020-12-09 13:54:54,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 13:54:54,297 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 86 [2020-12-09 13:54:54,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 13:54:54,298 INFO L225 Difference]: With dead ends: 573 [2020-12-09 13:54:54,299 INFO L226 Difference]: Without dead ends: 358 [2020-12-09 13:54:54,300 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 [2020-12-09 13:54:54,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2020-12-09 13:54:54,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 358. [2020-12-09 13:54:54,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 358 states. [2020-12-09 13:54:54,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 483 transitions. [2020-12-09 13:54:54,312 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 483 transitions. Word has length 86 [2020-12-09 13:54:54,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 13:54:54,312 INFO L481 AbstractCegarLoop]: Abstraction has 358 states and 483 transitions. [2020-12-09 13:54:54,312 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 13:54:54,313 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 483 transitions. [2020-12-09 13:54:54,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-12-09 13:54:54,315 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 13:54:54,315 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 13:54:54,315 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-09 13:54:54,315 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 13:54:54,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 13:54:54,316 INFO L82 PathProgramCache]: Analyzing trace with hash -785759947, now seen corresponding path program 1 times [2020-12-09 13:54:54,316 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 13:54:54,316 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237126629] [2020-12-09 13:54:54,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 13:54:54,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 13:54:54,357 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2020-12-09 13:54:54,358 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237126629] [2020-12-09 13:54:54,358 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 13:54:54,358 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 13:54:54,358 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426484829] [2020-12-09 13:54:54,358 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 13:54:54,359 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 13:54:54,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 13:54:54,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 13:54:54,359 INFO L87 Difference]: Start difference. First operand 358 states and 483 transitions. Second operand 3 states. [2020-12-09 13:54:54,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 13:54:54,562 INFO L93 Difference]: Finished difference Result 999 states and 1339 transitions. [2020-12-09 13:54:54,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 13:54:54,563 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 111 [2020-12-09 13:54:54,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 13:54:54,565 INFO L225 Difference]: With dead ends: 999 [2020-12-09 13:54:54,565 INFO L226 Difference]: Without dead ends: 642 [2020-12-09 13:54:54,566 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 [2020-12-09 13:54:54,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2020-12-09 13:54:54,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 571. [2020-12-09 13:54:54,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 571 states. [2020-12-09 13:54:54,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 779 transitions. [2020-12-09 13:54:54,579 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 779 transitions. Word has length 111 [2020-12-09 13:54:54,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 13:54:54,579 INFO L481 AbstractCegarLoop]: Abstraction has 571 states and 779 transitions. [2020-12-09 13:54:54,579 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 13:54:54,580 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 779 transitions. [2020-12-09 13:54:54,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-12-09 13:54:54,581 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 13:54:54,582 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2020-12-09 13:54:54,582 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-09 13:54:54,582 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 13:54:54,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 13:54:54,582 INFO L82 PathProgramCache]: Analyzing trace with hash 1795765412, now seen corresponding path program 1 times [2020-12-09 13:54:54,582 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 13:54:54,583 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303185129] [2020-12-09 13:54:54,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 13:54:54,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 13:54:54,628 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-12-09 13:54:54,628 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303185129] [2020-12-09 13:54:54,628 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 13:54:54,629 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 13:54:54,629 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267376430] [2020-12-09 13:54:54,629 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 13:54:54,629 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 13:54:54,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 13:54:54,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 13:54:54,630 INFO L87 Difference]: Start difference. First operand 571 states and 779 transitions. Second operand 4 states. [2020-12-09 13:54:54,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 13:54:54,951 INFO L93 Difference]: Finished difference Result 1283 states and 1754 transitions. [2020-12-09 13:54:54,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 13:54:54,951 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 117 [2020-12-09 13:54:54,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 13:54:54,955 INFO L225 Difference]: With dead ends: 1283 [2020-12-09 13:54:54,956 INFO L226 Difference]: Without dead ends: 713 [2020-12-09 13:54:54,957 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 13:54:54,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 713 states. [2020-12-09 13:54:54,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 713 to 642. [2020-12-09 13:54:54,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 642 states. [2020-12-09 13:54:54,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 858 transitions. [2020-12-09 13:54:54,976 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 858 transitions. Word has length 117 [2020-12-09 13:54:54,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 13:54:54,976 INFO L481 AbstractCegarLoop]: Abstraction has 642 states and 858 transitions. [2020-12-09 13:54:54,976 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 13:54:54,977 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 858 transitions. [2020-12-09 13:54:54,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-12-09 13:54:54,979 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 13:54:54,979 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 13:54:54,979 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-09 13:54:54,980 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 13:54:54,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 13:54:54,980 INFO L82 PathProgramCache]: Analyzing trace with hash 1365893287, now seen corresponding path program 1 times [2020-12-09 13:54:54,980 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 13:54:54,981 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350232638] [2020-12-09 13:54:54,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 13:54:55,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 13:54:55,042 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2020-12-09 13:54:55,042 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350232638] [2020-12-09 13:54:55,043 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 13:54:55,043 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 13:54:55,043 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664668888] [2020-12-09 13:54:55,043 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 13:54:55,043 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 13:54:55,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 13:54:55,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 13:54:55,044 INFO L87 Difference]: Start difference. First operand 642 states and 858 transitions. Second operand 4 states. [2020-12-09 13:54:55,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 13:54:55,422 INFO L93 Difference]: Finished difference Result 1496 states and 1977 transitions. [2020-12-09 13:54:55,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 13:54:55,423 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 131 [2020-12-09 13:54:55,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 13:54:55,428 INFO L225 Difference]: With dead ends: 1496 [2020-12-09 13:54:55,428 INFO L226 Difference]: Without dead ends: 855 [2020-12-09 13:54:55,429 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 [2020-12-09 13:54:55,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 855 states. [2020-12-09 13:54:55,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 855 to 784. [2020-12-09 13:54:55,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 784 states. [2020-12-09 13:54:55,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 784 states to 784 states and 1022 transitions. [2020-12-09 13:54:55,453 INFO L78 Accepts]: Start accepts. Automaton has 784 states and 1022 transitions. Word has length 131 [2020-12-09 13:54:55,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 13:54:55,453 INFO L481 AbstractCegarLoop]: Abstraction has 784 states and 1022 transitions. [2020-12-09 13:54:55,453 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 13:54:55,453 INFO L276 IsEmpty]: Start isEmpty. Operand 784 states and 1022 transitions. [2020-12-09 13:54:55,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-12-09 13:54:55,457 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 13:54:55,457 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 13:54:55,457 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-09 13:54:55,457 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 13:54:55,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 13:54:55,458 INFO L82 PathProgramCache]: Analyzing trace with hash -1083758206, now seen corresponding path program 1 times [2020-12-09 13:54:55,458 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 13:54:55,458 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850915087] [2020-12-09 13:54:55,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 13:54:55,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 13:54:55,537 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 96 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-12-09 13:54:55,537 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850915087] [2020-12-09 13:54:55,537 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 13:54:55,537 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 13:54:55,538 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032881026] [2020-12-09 13:54:55,538 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 13:54:55,538 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 13:54:55,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 13:54:55,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 13:54:55,539 INFO L87 Difference]: Start difference. First operand 784 states and 1022 transitions. Second operand 3 states. [2020-12-09 13:54:55,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 13:54:55,740 INFO L93 Difference]: Finished difference Result 1709 states and 2196 transitions. [2020-12-09 13:54:55,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 13:54:55,740 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 148 [2020-12-09 13:54:55,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 13:54:55,744 INFO L225 Difference]: With dead ends: 1709 [2020-12-09 13:54:55,744 INFO L226 Difference]: Without dead ends: 926 [2020-12-09 13:54:55,745 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 [2020-12-09 13:54:55,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 926 states. [2020-12-09 13:54:55,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 926 to 784. [2020-12-09 13:54:55,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 784 states. [2020-12-09 13:54:55,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 784 states to 784 states and 1016 transitions. [2020-12-09 13:54:55,759 INFO L78 Accepts]: Start accepts. Automaton has 784 states and 1016 transitions. Word has length 148 [2020-12-09 13:54:55,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 13:54:55,760 INFO L481 AbstractCegarLoop]: Abstraction has 784 states and 1016 transitions. [2020-12-09 13:54:55,760 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 13:54:55,760 INFO L276 IsEmpty]: Start isEmpty. Operand 784 states and 1016 transitions. [2020-12-09 13:54:55,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2020-12-09 13:54:55,762 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 13:54:55,762 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-12-09 13:54:55,762 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-09 13:54:55,762 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 13:54:55,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 13:54:55,763 INFO L82 PathProgramCache]: Analyzing trace with hash -274853084, now seen corresponding path program 1 times [2020-12-09 13:54:55,763 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 13:54:55,763 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410925254] [2020-12-09 13:54:55,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 13:54:55,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 13:54:55,893 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 188 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2020-12-09 13:54:55,893 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410925254] [2020-12-09 13:54:55,894 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 13:54:55,894 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-09 13:54:55,894 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935818999] [2020-12-09 13:54:55,894 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 13:54:55,894 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 13:54:55,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 13:54:55,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 13:54:55,895 INFO L87 Difference]: Start difference. First operand 784 states and 1016 transitions. Second operand 5 states. [2020-12-09 13:54:56,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 13:54:56,204 INFO L93 Difference]: Finished difference Result 1733 states and 2208 transitions. [2020-12-09 13:54:56,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 13:54:56,205 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 191 [2020-12-09 13:54:56,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 13:54:56,209 INFO L225 Difference]: With dead ends: 1733 [2020-12-09 13:54:56,209 INFO L226 Difference]: Without dead ends: 950 [2020-12-09 13:54:56,210 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 13:54:56,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 950 states. [2020-12-09 13:54:56,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 950 to 855. [2020-12-09 13:54:56,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 855 states. [2020-12-09 13:54:56,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 855 states to 855 states and 1055 transitions. [2020-12-09 13:54:56,237 INFO L78 Accepts]: Start accepts. Automaton has 855 states and 1055 transitions. Word has length 191 [2020-12-09 13:54:56,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 13:54:56,238 INFO L481 AbstractCegarLoop]: Abstraction has 855 states and 1055 transitions. [2020-12-09 13:54:56,238 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 13:54:56,238 INFO L276 IsEmpty]: Start isEmpty. Operand 855 states and 1055 transitions. [2020-12-09 13:54:56,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2020-12-09 13:54:56,242 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 13:54:56,242 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-12-09 13:54:56,242 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-09 13:54:56,242 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 13:54:56,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 13:54:56,243 INFO L82 PathProgramCache]: Analyzing trace with hash 1630204963, now seen corresponding path program 1 times [2020-12-09 13:54:56,243 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 13:54:56,243 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282554966] [2020-12-09 13:54:56,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 13:54:56,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 13:54:56,342 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 226 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2020-12-09 13:54:56,342 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282554966] [2020-12-09 13:54:56,342 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 13:54:56,343 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 13:54:56,343 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409100729] [2020-12-09 13:54:56,343 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 13:54:56,344 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 13:54:56,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 13:54:56,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 13:54:56,344 INFO L87 Difference]: Start difference. First operand 855 states and 1055 transitions. Second operand 3 states. [2020-12-09 13:54:56,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 13:54:56,572 INFO L93 Difference]: Finished difference Result 1851 states and 2332 transitions. [2020-12-09 13:54:56,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 13:54:56,573 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 204 [2020-12-09 13:54:56,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 13:54:56,577 INFO L225 Difference]: With dead ends: 1851 [2020-12-09 13:54:56,577 INFO L226 Difference]: Without dead ends: 997 [2020-12-09 13:54:56,578 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 [2020-12-09 13:54:56,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 997 states. [2020-12-09 13:54:56,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 997 to 997. [2020-12-09 13:54:56,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 997 states. [2020-12-09 13:54:56,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 997 states to 997 states and 1230 transitions. [2020-12-09 13:54:56,600 INFO L78 Accepts]: Start accepts. Automaton has 997 states and 1230 transitions. Word has length 204 [2020-12-09 13:54:56,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 13:54:56,601 INFO L481 AbstractCegarLoop]: Abstraction has 997 states and 1230 transitions. [2020-12-09 13:54:56,601 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 13:54:56,601 INFO L276 IsEmpty]: Start isEmpty. Operand 997 states and 1230 transitions. [2020-12-09 13:54:56,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2020-12-09 13:54:56,605 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 13:54:56,605 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 13:54:56,606 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-09 13:54:56,606 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 13:54:56,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 13:54:56,606 INFO L82 PathProgramCache]: Analyzing trace with hash 236751181, now seen corresponding path program 1 times [2020-12-09 13:54:56,607 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 13:54:56,607 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563227849] [2020-12-09 13:54:56,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 13:54:56,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 13:54:56,855 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 143 proven. 86 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2020-12-09 13:54:56,856 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563227849] [2020-12-09 13:54:56,856 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1903516244] [2020-12-09 13:54:56,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1a2d9453-ebef-436a-8a3e-8800a29ecc97/bin/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 13:54:56,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 13:54:56,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 477 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-09 13:54:56,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 13:54:57,130 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 144 proven. 0 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2020-12-09 13:54:57,130 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 13:54:57,274 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 144 proven. 0 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2020-12-09 13:54:57,274 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-12-09 13:54:57,274 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 6 [2020-12-09 13:54:57,274 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121031250] [2020-12-09 13:54:57,275 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 13:54:57,275 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 13:54:57,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 13:54:57,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-09 13:54:57,276 INFO L87 Difference]: Start difference. First operand 997 states and 1230 transitions. Second operand 3 states. [2020-12-09 13:54:57,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 13:54:57,481 INFO L93 Difference]: Finished difference Result 2277 states and 2817 transitions. [2020-12-09 13:54:57,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 13:54:57,481 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 216 [2020-12-09 13:54:57,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 13:54:57,485 INFO L225 Difference]: With dead ends: 2277 [2020-12-09 13:54:57,485 INFO L226 Difference]: Without dead ends: 1281 [2020-12-09 13:54:57,486 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 435 GetRequests, 430 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-09 13:54:57,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1281 states. [2020-12-09 13:54:57,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1281 to 1068. [2020-12-09 13:54:57,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1068 states. [2020-12-09 13:54:57,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1068 states to 1068 states and 1322 transitions. [2020-12-09 13:54:57,503 INFO L78 Accepts]: Start accepts. Automaton has 1068 states and 1322 transitions. Word has length 216 [2020-12-09 13:54:57,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 13:54:57,503 INFO L481 AbstractCegarLoop]: Abstraction has 1068 states and 1322 transitions. [2020-12-09 13:54:57,503 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 13:54:57,503 INFO L276 IsEmpty]: Start isEmpty. Operand 1068 states and 1322 transitions. [2020-12-09 13:54:57,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2020-12-09 13:54:57,506 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 13:54:57,506 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 13:54:57,707 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-12-09 13:54:57,708 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 13:54:57,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 13:54:57,709 INFO L82 PathProgramCache]: Analyzing trace with hash 228350323, now seen corresponding path program 1 times [2020-12-09 13:54:57,709 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 13:54:57,710 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405205201] [2020-12-09 13:54:57,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 13:54:57,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 13:54:58,009 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 62 proven. 221 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2020-12-09 13:54:58,009 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405205201] [2020-12-09 13:54:58,009 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1630377302] [2020-12-09 13:54:58,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1a2d9453-ebef-436a-8a3e-8800a29ecc97/bin/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 13:54:58,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 13:54:58,095 INFO L263 TraceCheckSpWp]: Trace formula consists of 513 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-09 13:54:58,100 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 13:54:58,224 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 194 proven. 0 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2020-12-09 13:54:58,225 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 13:54:58,330 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 194 proven. 0 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2020-12-09 13:54:58,330 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-12-09 13:54:58,331 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [6] total 7 [2020-12-09 13:54:58,331 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088787922] [2020-12-09 13:54:58,331 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 13:54:58,331 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 13:54:58,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 13:54:58,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-12-09 13:54:58,332 INFO L87 Difference]: Start difference. First operand 1068 states and 1322 transitions. Second operand 3 states. [2020-12-09 13:54:58,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 13:54:58,551 INFO L93 Difference]: Finished difference Result 2133 states and 2642 transitions. [2020-12-09 13:54:58,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 13:54:58,551 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 222 [2020-12-09 13:54:58,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 13:54:58,552 INFO L225 Difference]: With dead ends: 2133 [2020-12-09 13:54:58,552 INFO L226 Difference]: Without dead ends: 0 [2020-12-09 13:54:58,553 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 448 GetRequests, 442 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-12-09 13:54:58,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-09 13:54:58,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-09 13:54:58,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-09 13:54:58,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-09 13:54:58,554 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 222 [2020-12-09 13:54:58,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 13:54:58,554 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-09 13:54:58,554 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 13:54:58,554 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-09 13:54:58,555 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-09 13:54:58,755 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 13:54:58,760 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-09 13:54:58,974 INFO L262 CegarLoopResult]: For program point L102(lines 102 400) no Hoare annotation was computed. [2020-12-09 13:54:58,974 INFO L262 CegarLoopResult]: For program point L598(line 598) no Hoare annotation was computed. [2020-12-09 13:54:58,974 INFO L262 CegarLoopResult]: For program point L334(lines 334 400) no Hoare annotation was computed. [2020-12-09 13:54:58,974 INFO L262 CegarLoopResult]: For program point L302(lines 302 400) no Hoare annotation was computed. [2020-12-09 13:54:58,974 INFO L262 CegarLoopResult]: For program point L170(lines 170 400) no Hoare annotation was computed. [2020-12-09 13:54:58,974 INFO L262 CegarLoopResult]: For program point L204(lines 204 400) no Hoare annotation was computed. [2020-12-09 13:54:58,974 INFO L262 CegarLoopResult]: For program point L72(lines 72 400) no Hoare annotation was computed. [2020-12-09 13:54:58,974 INFO L262 CegarLoopResult]: For program point L271(lines 271 400) no Hoare annotation was computed. [2020-12-09 13:54:58,974 INFO L262 CegarLoopResult]: For program point L139(lines 139 400) no Hoare annotation was computed. [2020-12-09 13:54:58,974 INFO L262 CegarLoopResult]: For program point L569-1(lines 40 585) no Hoare annotation was computed. [2020-12-09 13:54:58,974 INFO L262 CegarLoopResult]: For program point L371(lines 371 400) no Hoare annotation was computed. [2020-12-09 13:54:58,974 INFO L262 CegarLoopResult]: For program point L107(lines 107 400) no Hoare annotation was computed. [2020-12-09 13:54:58,974 INFO L262 CegarLoopResult]: For program point L41(lines 41 400) no Hoare annotation was computed. [2020-12-09 13:54:58,975 INFO L262 CegarLoopResult]: For program point L339(lines 339 400) no Hoare annotation was computed. [2020-12-09 13:54:58,975 INFO L262 CegarLoopResult]: For program point L207(lines 207 400) no Hoare annotation was computed. [2020-12-09 13:54:58,975 INFO L262 CegarLoopResult]: For program point L75(lines 75 400) no Hoare annotation was computed. [2020-12-09 13:54:58,975 INFO L262 CegarLoopResult]: For program point L373(lines 373 400) no Hoare annotation was computed. [2020-12-09 13:54:58,975 INFO L262 CegarLoopResult]: For program point L241(lines 241 400) no Hoare annotation was computed. [2020-12-09 13:54:58,975 INFO L262 CegarLoopResult]: For program point L175(lines 175 400) no Hoare annotation was computed. [2020-12-09 13:54:58,975 INFO L262 CegarLoopResult]: For program point L572-1(lines 40 585) no Hoare annotation was computed. [2020-12-09 13:54:58,975 INFO L262 CegarLoopResult]: For program point L275(lines 275 400) no Hoare annotation was computed. [2020-12-09 13:54:58,975 INFO L262 CegarLoopResult]: For program point L573(line 573) no Hoare annotation was computed. [2020-12-09 13:54:58,975 INFO L262 CegarLoopResult]: For program point L375(lines 375 400) no Hoare annotation was computed. [2020-12-09 13:54:58,975 INFO L262 CegarLoopResult]: For program point L309(lines 309 400) no Hoare annotation was computed. [2020-12-09 13:54:58,975 INFO L262 CegarLoopResult]: For program point L45(lines 45 400) no Hoare annotation was computed. [2020-12-09 13:54:58,975 INFO L262 CegarLoopResult]: For program point L343(lines 343 400) no Hoare annotation was computed. [2020-12-09 13:54:58,975 INFO L262 CegarLoopResult]: For program point L112(lines 112 400) no Hoare annotation was computed. [2020-12-09 13:54:58,975 INFO L262 CegarLoopResult]: For program point L278(lines 278 400) no Hoare annotation was computed. [2020-12-09 13:54:58,975 INFO L262 CegarLoopResult]: For program point L146(lines 146 400) no Hoare annotation was computed. [2020-12-09 13:54:58,976 INFO L262 CegarLoopResult]: For program point L213(lines 213 400) no Hoare annotation was computed. [2020-12-09 13:54:58,976 INFO L262 CegarLoopResult]: For program point L82(lines 82 400) no Hoare annotation was computed. [2020-12-09 13:54:58,976 INFO L262 CegarLoopResult]: For program point L347(lines 347 400) no Hoare annotation was computed. [2020-12-09 13:54:58,976 INFO L262 CegarLoopResult]: For program point L248(lines 248 400) no Hoare annotation was computed. [2020-12-09 13:54:58,976 INFO L262 CegarLoopResult]: For program point L183(lines 183 400) no Hoare annotation was computed. [2020-12-09 13:54:58,976 INFO L262 CegarLoopResult]: For program point L150(lines 150 400) no Hoare annotation was computed. [2020-12-09 13:54:58,976 INFO L262 CegarLoopResult]: For program point L382(lines 382 400) no Hoare annotation was computed. [2020-12-09 13:54:58,976 INFO L262 CegarLoopResult]: For program point L316(lines 316 400) no Hoare annotation was computed. [2020-12-09 13:54:58,976 INFO L262 CegarLoopResult]: For program point L283(lines 283 400) no Hoare annotation was computed. [2020-12-09 13:54:58,976 INFO L262 CegarLoopResult]: For program point L118(lines 118 400) no Hoare annotation was computed. [2020-12-09 13:54:58,976 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-09 13:54:58,976 INFO L262 CegarLoopResult]: For program point L218(lines 218 400) no Hoare annotation was computed. [2020-12-09 13:54:58,976 INFO L262 CegarLoopResult]: For program point L53(lines 53 400) no Hoare annotation was computed. [2020-12-09 13:54:58,976 INFO L262 CegarLoopResult]: For program point L154(lines 154 400) no Hoare annotation was computed. [2020-12-09 13:54:58,977 INFO L258 CegarLoopResult]: At program point L584(lines 40 585) the Hoare annotation is: (let ((.cse0 (<= 14 ~a8~0)) (.cse3 (= ~a20~0 1)) (.cse1 (= ~a16~0 6)) (.cse2 (not (= ~a7~0 1))) (.cse4 (<= ~a16~0 5)) (.cse5 (<= ~a21~0 0))) (or (and .cse0 .cse1 .cse2) (and .cse3 .cse2) (and .cse0 .cse4) (and (= ~a21~0 1) (= ~a12~0 8) (= ~a8~0 13) .cse3 (= ~a16~0 4) (= ~a17~0 1)) (and .cse1 .cse5) (and .cse4 .cse2) (and .cse4 .cse5))) [2020-12-09 13:54:58,977 INFO L262 CegarLoopResult]: For program point L188(lines 188 400) no Hoare annotation was computed. [2020-12-09 13:54:58,977 INFO L262 CegarLoopResult]: For program point L387(lines 387 400) no Hoare annotation was computed. [2020-12-09 13:54:58,977 INFO L262 CegarLoopResult]: For program point L288(lines 288 400) no Hoare annotation was computed. [2020-12-09 13:54:58,977 INFO L262 CegarLoopResult]: For program point L255(lines 255 400) no Hoare annotation was computed. [2020-12-09 13:54:58,977 INFO L262 CegarLoopResult]: For program point L90(lines 90 400) no Hoare annotation was computed. [2020-12-09 13:54:58,977 INFO L262 CegarLoopResult]: For program point L355(lines 355 400) no Hoare annotation was computed. [2020-12-09 13:54:58,977 INFO L262 CegarLoopResult]: For program point L322(lines 322 400) no Hoare annotation was computed. [2020-12-09 13:54:58,977 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-09 13:54:58,977 INFO L262 CegarLoopResult]: For program point L124(lines 124 400) no Hoare annotation was computed. [2020-12-09 13:54:58,977 INFO L265 CegarLoopResult]: At program point L587(lines 587 604) the Hoare annotation is: true [2020-12-09 13:54:58,977 INFO L262 CegarLoopResult]: For program point L224(lines 224 400) no Hoare annotation was computed. [2020-12-09 13:54:58,977 INFO L262 CegarLoopResult]: For program point L158(lines 158 400) no Hoare annotation was computed. [2020-12-09 13:54:58,977 INFO L262 CegarLoopResult]: For program point L59(lines 59 400) no Hoare annotation was computed. [2020-12-09 13:54:58,977 INFO L262 CegarLoopResult]: For program point L94(lines 94 400) no Hoare annotation was computed. [2020-12-09 13:54:58,977 INFO L262 CegarLoopResult]: For program point L392(lines 392 400) no Hoare annotation was computed. [2020-12-09 13:54:58,977 INFO L262 CegarLoopResult]: For program point L326(lines 326 400) no Hoare annotation was computed. [2020-12-09 13:54:58,978 INFO L262 CegarLoopResult]: For program point L260(lines 260 400) no Hoare annotation was computed. [2020-12-09 13:54:58,978 INFO L262 CegarLoopResult]: For program point L228(lines 228 400) no Hoare annotation was computed. [2020-12-09 13:54:58,978 INFO L262 CegarLoopResult]: For program point L162(lines 162 400) no Hoare annotation was computed. [2020-12-09 13:54:58,978 INFO L262 CegarLoopResult]: For program point L129(lines 129 400) no Hoare annotation was computed. [2020-12-09 13:54:58,978 INFO L262 CegarLoopResult]: For program point L328(lines 328 400) no Hoare annotation was computed. [2020-12-09 13:54:58,978 INFO L262 CegarLoopResult]: For program point L196(lines 196 400) no Hoare annotation was computed. [2020-12-09 13:54:58,978 INFO L262 CegarLoopResult]: For program point L64(lines 64 400) no Hoare annotation was computed. [2020-12-09 13:54:58,978 INFO L258 CegarLoopResult]: At program point L593-2(lines 593 603) the Hoare annotation is: (let ((.cse0 (<= 14 ~a8~0)) (.cse3 (= ~a20~0 1)) (.cse1 (= ~a16~0 6)) (.cse2 (not (= ~a7~0 1))) (.cse4 (<= ~a16~0 5)) (.cse5 (<= ~a21~0 0))) (or (and .cse0 .cse1 .cse2) (and .cse3 .cse2) (and .cse0 .cse4) (and (= ~a21~0 1) (= ~a12~0 8) (= ~a8~0 13) .cse3 (= ~a16~0 4) (= ~a17~0 1)) (and .cse1 .cse5) (and .cse4 .cse2) (and .cse4 .cse5))) [2020-12-09 13:54:58,978 INFO L262 CegarLoopResult]: For program point L296(lines 296 400) no Hoare annotation was computed. [2020-12-09 13:54:58,978 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 573) no Hoare annotation was computed. [2020-12-09 13:54:58,978 INFO L262 CegarLoopResult]: For program point L363(lines 363 400) no Hoare annotation was computed. [2020-12-09 13:54:58,978 INFO L262 CegarLoopResult]: For program point L199(lines 199 400) no Hoare annotation was computed. [2020-12-09 13:54:58,978 INFO L262 CegarLoopResult]: For program point L365(lines 365 400) no Hoare annotation was computed. [2020-12-09 13:54:58,978 INFO L262 CegarLoopResult]: For program point L266(lines 266 400) no Hoare annotation was computed. [2020-12-09 13:54:58,979 INFO L262 CegarLoopResult]: For program point L233(lines 233 400) no Hoare annotation was computed. [2020-12-09 13:54:58,979 INFO L262 CegarLoopResult]: For program point L134(lines 134 400) no Hoare annotation was computed. [2020-12-09 13:54:58,992 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 01:54:58 BoogieIcfgContainer [2020-12-09 13:54:58,992 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 13:54:58,993 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 13:54:58,993 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 13:54:58,993 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 13:54:58,993 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 01:54:52" (3/4) ... [2020-12-09 13:54:58,996 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-09 13:54:59,015 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 102 nodes and edges [2020-12-09 13:54:59,017 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 21 nodes and edges [2020-12-09 13:54:59,018 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2020-12-09 13:54:59,020 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2020-12-09 13:54:59,094 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_1a2d9453-ebef-436a-8a3e-8800a29ecc97/bin/utaipan/witness.graphml [2020-12-09 13:54:59,094 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 13:54:59,095 INFO L168 Benchmark]: Toolchain (without parser) took 8531.85 ms. Allocated memory was 123.7 MB in the beginning and 360.7 MB in the end (delta: 237.0 MB). Free memory was 93.1 MB in the beginning and 207.6 MB in the end (delta: -114.5 MB). Peak memory consumption was 123.3 MB. Max. memory is 16.1 GB. [2020-12-09 13:54:59,095 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 123.7 MB. Free memory was 103.0 MB in the beginning and 102.8 MB in the end (delta: 119.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 13:54:59,095 INFO L168 Benchmark]: CACSL2BoogieTranslator took 333.18 ms. Allocated memory is still 123.7 MB. Free memory was 92.8 MB in the beginning and 65.8 MB in the end (delta: 27.0 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. [2020-12-09 13:54:59,096 INFO L168 Benchmark]: Boogie Procedure Inliner took 84.31 ms. Allocated memory is still 123.7 MB. Free memory was 65.8 MB in the beginning and 99.9 MB in the end (delta: -34.1 MB). Peak memory consumption was 14.2 MB. Max. memory is 16.1 GB. [2020-12-09 13:54:59,096 INFO L168 Benchmark]: Boogie Preprocessor took 58.78 ms. Allocated memory is still 123.7 MB. Free memory was 99.9 MB in the beginning and 95.2 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-09 13:54:59,096 INFO L168 Benchmark]: RCFGBuilder took 1334.35 ms. Allocated memory was 123.7 MB in the beginning and 172.0 MB in the end (delta: 48.2 MB). Free memory was 95.2 MB in the beginning and 82.7 MB in the end (delta: 12.5 MB). Peak memory consumption was 66.9 MB. Max. memory is 16.1 GB. [2020-12-09 13:54:59,096 INFO L168 Benchmark]: TraceAbstraction took 6615.24 ms. Allocated memory was 172.0 MB in the beginning and 360.7 MB in the end (delta: 188.7 MB). Free memory was 81.7 MB in the beginning and 222.2 MB in the end (delta: -140.6 MB). Peak memory consumption was 47.1 MB. Max. memory is 16.1 GB. [2020-12-09 13:54:59,097 INFO L168 Benchmark]: Witness Printer took 101.21 ms. Allocated memory is still 360.7 MB. Free memory was 222.2 MB in the beginning and 207.6 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-12-09 13:54:59,098 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 123.7 MB. Free memory was 103.0 MB in the beginning and 102.8 MB in the end (delta: 119.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 333.18 ms. Allocated memory is still 123.7 MB. Free memory was 92.8 MB in the beginning and 65.8 MB in the end (delta: 27.0 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 84.31 ms. Allocated memory is still 123.7 MB. Free memory was 65.8 MB in the beginning and 99.9 MB in the end (delta: -34.1 MB). Peak memory consumption was 14.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 58.78 ms. Allocated memory is still 123.7 MB. Free memory was 99.9 MB in the beginning and 95.2 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1334.35 ms. Allocated memory was 123.7 MB in the beginning and 172.0 MB in the end (delta: 48.2 MB). Free memory was 95.2 MB in the beginning and 82.7 MB in the end (delta: 12.5 MB). Peak memory consumption was 66.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 6615.24 ms. Allocated memory was 172.0 MB in the beginning and 360.7 MB in the end (delta: 188.7 MB). Free memory was 81.7 MB in the beginning and 222.2 MB in the end (delta: -140.6 MB). Peak memory consumption was 47.1 MB. Max. memory is 16.1 GB. * Witness Printer took 101.21 ms. Allocated memory is still 360.7 MB. Free memory was 222.2 MB in the beginning and 207.6 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 573]: 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: (((((((14 <= a8 && a16 == 6) && !(a7 == 1)) || (a20 == 1 && !(a7 == 1))) || (14 <= a8 && a16 <= 5)) || (((((a21 == 1 && a12 == 8) && a8 == 13) && a20 == 1) && a16 == 4) && a17 == 1)) || (a16 == 6 && a21 <= 0)) || (a16 <= 5 && !(a7 == 1))) || (a16 <= 5 && a21 <= 0) - InvariantResult [Line: 587]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 593]: Loop Invariant Derived loop invariant: (((((((14 <= a8 && a16 == 6) && !(a7 == 1)) || (a20 == 1 && !(a7 == 1))) || (14 <= a8 && a16 <= 5)) || (((((a21 == 1 && a12 == 8) && a8 == 13) && a20 == 1) && a16 == 4) && a17 == 1)) || (a16 == 6 && a21 <= 0)) || (a16 <= 5 && !(a7 == 1))) || (a16 <= 5 && a21 <= 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 76 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6.3s, OverallIterations: 11, TraceHistogramMax: 7, AutomataDifference: 3.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 569 SDtfs, 1035 SDslu, 70 SDs, 0 SdLazy, 2958 SolverSat, 749 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 914 GetRequests, 886 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1068occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 734 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 38 NumberOfFragments, 137 HoareAnnotationTreeSize, 3 FomulaSimplifications, 6746 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 92 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 2013 NumberOfCodeBlocks, 2013 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 2436 ConstructedInterpolants, 0 QuantifiedInterpolants, 1743837 SizeOfPredicates, 0 NumberOfNonLiveVariables, 990 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 15 InterpolantComputations, 13 PerfectInterpolantSequences, 2421/2728 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...