./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/psyco/psyco_io_1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_e3428dc4-127b-4f2c-b622-dfbfa7f38b2a/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_e3428dc4-127b-4f2c-b622-dfbfa7f38b2a/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_e3428dc4-127b-4f2c-b622-dfbfa7f38b2a/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_e3428dc4-127b-4f2c-b622-dfbfa7f38b2a/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/psyco/psyco_io_1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_e3428dc4-127b-4f2c-b622-dfbfa7f38b2a/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_e3428dc4-127b-4f2c-b622-dfbfa7f38b2a/bin/uautomizer --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0e42a14d02446d341c51d21bb42c9bd175f1ebef ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 03:20:08,715 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 03:20:08,720 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 03:20:08,793 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 03:20:08,794 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 03:20:08,807 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 03:20:08,809 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 03:20:08,812 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 03:20:08,814 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 03:20:08,815 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 03:20:08,816 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 03:20:08,817 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 03:20:08,818 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 03:20:08,820 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 03:20:08,821 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 03:20:08,823 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 03:20:08,823 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 03:20:08,825 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 03:20:08,827 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 03:20:08,829 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 03:20:08,831 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 03:20:08,833 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 03:20:08,834 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 03:20:08,835 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 03:20:08,838 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 03:20:08,839 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 03:20:08,839 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 03:20:08,840 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 03:20:08,841 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 03:20:08,842 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 03:20:08,843 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 03:20:08,844 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 03:20:08,845 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 03:20:08,846 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 03:20:08,847 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 03:20:08,847 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 03:20:08,848 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 03:20:08,849 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 03:20:08,849 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 03:20:08,850 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 03:20:08,851 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 03:20:08,852 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_e3428dc4-127b-4f2c-b622-dfbfa7f38b2a/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-28 03:20:08,875 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 03:20:08,876 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 03:20:08,877 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 03:20:08,877 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 03:20:08,878 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 03:20:08,878 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 03:20:08,878 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 03:20:08,878 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 03:20:08,879 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 03:20:08,879 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 03:20:08,879 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 03:20:08,880 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 03:20:08,880 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 03:20:08,880 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 03:20:08,880 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 03:20:08,881 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 03:20:08,881 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 03:20:08,881 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 03:20:08,882 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 03:20:08,882 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 03:20:08,882 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 03:20:08,882 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:20:08,883 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 03:20:08,883 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 03:20:08,883 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 03:20:08,883 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 03:20:08,884 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 03:20:08,884 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 03:20:08,884 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 03:20:08,884 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_e3428dc4-127b-4f2c-b622-dfbfa7f38b2a/bin/uautomizer/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_e3428dc4-127b-4f2c-b622-dfbfa7f38b2a/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0e42a14d02446d341c51d21bb42c9bd175f1ebef [2020-11-28 03:20:09,107 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 03:20:09,127 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 03:20:09,130 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 03:20:09,131 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 03:20:09,132 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 03:20:09,133 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_e3428dc4-127b-4f2c-b622-dfbfa7f38b2a/bin/uautomizer/../../sv-benchmarks/c/psyco/psyco_io_1.c [2020-11-28 03:20:09,208 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e3428dc4-127b-4f2c-b622-dfbfa7f38b2a/bin/uautomizer/data/58f396b24/40a40216e6e04982aae12805d9fa330a/FLAGc84c19164 [2020-11-28 03:20:09,680 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 03:20:09,681 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_e3428dc4-127b-4f2c-b622-dfbfa7f38b2a/sv-benchmarks/c/psyco/psyco_io_1.c [2020-11-28 03:20:09,690 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e3428dc4-127b-4f2c-b622-dfbfa7f38b2a/bin/uautomizer/data/58f396b24/40a40216e6e04982aae12805d9fa330a/FLAGc84c19164 [2020-11-28 03:20:10,051 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_e3428dc4-127b-4f2c-b622-dfbfa7f38b2a/bin/uautomizer/data/58f396b24/40a40216e6e04982aae12805d9fa330a [2020-11-28 03:20:10,053 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 03:20:10,054 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 03:20:10,056 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 03:20:10,056 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 03:20:10,059 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 03:20:10,060 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:20:10" (1/1) ... [2020-11-28 03:20:10,062 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6baf55ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:20:10, skipping insertion in model container [2020-11-28 03:20:10,062 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:20:10" (1/1) ... [2020-11-28 03:20:10,069 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 03:20:10,096 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 03:20:10,296 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:20:10,305 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 03:20:10,339 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:20:10,353 INFO L208 MainTranslator]: Completed translation [2020-11-28 03:20:10,354 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:20:10 WrapperNode [2020-11-28 03:20:10,354 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 03:20:10,355 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 03:20:10,355 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 03:20:10,356 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 03:20:10,363 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:20:10" (1/1) ... [2020-11-28 03:20:10,371 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:20:10" (1/1) ... [2020-11-28 03:20:10,398 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 03:20:10,399 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 03:20:10,399 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 03:20:10,399 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 03:20:10,408 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:20:10" (1/1) ... [2020-11-28 03:20:10,408 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:20:10" (1/1) ... [2020-11-28 03:20:10,411 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:20:10" (1/1) ... [2020-11-28 03:20:10,412 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:20:10" (1/1) ... [2020-11-28 03:20:10,417 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:20:10" (1/1) ... [2020-11-28 03:20:10,423 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:20:10" (1/1) ... [2020-11-28 03:20:10,425 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:20:10" (1/1) ... [2020-11-28 03:20:10,429 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 03:20:10,430 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 03:20:10,430 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 03:20:10,430 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 03:20:10,431 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:20:10" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e3428dc4-127b-4f2c-b622-dfbfa7f38b2a/bin/uautomizer/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 [2020-11-28 03:20:10,522 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 03:20:10,523 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 03:20:10,523 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 03:20:10,523 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 03:20:11,111 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 03:20:11,111 INFO L298 CfgBuilder]: Removed 11 assume(true) statements. [2020-11-28 03:20:11,113 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:20:11 BoogieIcfgContainer [2020-11-28 03:20:11,113 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 03:20:11,115 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 03:20:11,116 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 03:20:11,121 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 03:20:11,121 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:20:10" (1/3) ... [2020-11-28 03:20:11,122 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d6ce86e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:20:11, skipping insertion in model container [2020-11-28 03:20:11,122 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:20:10" (2/3) ... [2020-11-28 03:20:11,123 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d6ce86e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:20:11, skipping insertion in model container [2020-11-28 03:20:11,123 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:20:11" (3/3) ... [2020-11-28 03:20:11,124 INFO L111 eAbstractionObserver]: Analyzing ICFG psyco_io_1.c [2020-11-28 03:20:11,140 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 03:20:11,145 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 03:20:11,155 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-28 03:20:11,176 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 03:20:11,176 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 03:20:11,176 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 03:20:11,176 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 03:20:11,176 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 03:20:11,176 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 03:20:11,177 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 03:20:11,177 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 03:20:11,190 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states. [2020-11-28 03:20:11,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-28 03:20:11,196 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:20:11,197 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:20:11,197 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:20:11,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:20:11,203 INFO L82 PathProgramCache]: Analyzing trace with hash 352571312, now seen corresponding path program 1 times [2020-11-28 03:20:11,212 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:20:11,212 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667932273] [2020-11-28 03:20:11,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:20:11,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:20:11,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:20:11,350 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667932273] [2020-11-28 03:20:11,351 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:20:11,351 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 03:20:11,352 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800743347] [2020-11-28 03:20:11,356 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-28 03:20:11,356 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:20:11,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-28 03:20:11,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 03:20:11,371 INFO L87 Difference]: Start difference. First operand 69 states. Second operand 2 states. [2020-11-28 03:20:11,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:20:11,394 INFO L93 Difference]: Finished difference Result 131 states and 245 transitions. [2020-11-28 03:20:11,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-28 03:20:11,396 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2020-11-28 03:20:11,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:20:11,405 INFO L225 Difference]: With dead ends: 131 [2020-11-28 03:20:11,406 INFO L226 Difference]: Without dead ends: 57 [2020-11-28 03:20:11,409 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 03:20:11,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-11-28 03:20:11,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2020-11-28 03:20:11,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-11-28 03:20:11,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 87 transitions. [2020-11-28 03:20:11,446 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 87 transitions. Word has length 9 [2020-11-28 03:20:11,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:20:11,446 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 87 transitions. [2020-11-28 03:20:11,446 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-28 03:20:11,447 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 87 transitions. [2020-11-28 03:20:11,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-28 03:20:11,448 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:20:11,448 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:20:11,448 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 03:20:11,448 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:20:11,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:20:11,449 INFO L82 PathProgramCache]: Analyzing trace with hash -1422697760, now seen corresponding path program 1 times [2020-11-28 03:20:11,450 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:20:11,450 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817034480] [2020-11-28 03:20:11,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:20:11,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:20:11,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:20:11,504 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817034480] [2020-11-28 03:20:11,504 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:20:11,504 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:20:11,504 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892693724] [2020-11-28 03:20:11,506 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:20:11,506 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:20:11,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:20:11,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:20:11,507 INFO L87 Difference]: Start difference. First operand 57 states and 87 transitions. Second operand 3 states. [2020-11-28 03:20:11,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:20:11,604 INFO L93 Difference]: Finished difference Result 115 states and 176 transitions. [2020-11-28 03:20:11,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:20:11,604 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-11-28 03:20:11,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:20:11,605 INFO L225 Difference]: With dead ends: 115 [2020-11-28 03:20:11,606 INFO L226 Difference]: Without dead ends: 60 [2020-11-28 03:20:11,607 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 [2020-11-28 03:20:11,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-11-28 03:20:11,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2020-11-28 03:20:11,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-11-28 03:20:11,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 90 transitions. [2020-11-28 03:20:11,618 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 90 transitions. Word has length 10 [2020-11-28 03:20:11,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:20:11,618 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 90 transitions. [2020-11-28 03:20:11,618 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:20:11,619 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 90 transitions. [2020-11-28 03:20:11,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-28 03:20:11,619 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:20:11,619 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:20:11,620 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 03:20:11,621 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:20:11,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:20:11,623 INFO L82 PathProgramCache]: Analyzing trace with hash 658032531, now seen corresponding path program 1 times [2020-11-28 03:20:11,623 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:20:11,623 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497426213] [2020-11-28 03:20:11,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:20:11,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:20:11,732 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:20:11,733 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497426213] [2020-11-28 03:20:11,733 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:20:11,733 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:20:11,733 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751919539] [2020-11-28 03:20:11,734 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:20:11,734 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:20:11,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:20:11,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:20:11,735 INFO L87 Difference]: Start difference. First operand 60 states and 90 transitions. Second operand 3 states. [2020-11-28 03:20:11,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:20:11,831 INFO L93 Difference]: Finished difference Result 123 states and 185 transitions. [2020-11-28 03:20:11,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:20:11,831 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2020-11-28 03:20:11,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:20:11,833 INFO L225 Difference]: With dead ends: 123 [2020-11-28 03:20:11,833 INFO L226 Difference]: Without dead ends: 66 [2020-11-28 03:20:11,834 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 [2020-11-28 03:20:11,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-11-28 03:20:11,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 64. [2020-11-28 03:20:11,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-11-28 03:20:11,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 94 transitions. [2020-11-28 03:20:11,841 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 94 transitions. Word has length 15 [2020-11-28 03:20:11,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:20:11,842 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 94 transitions. [2020-11-28 03:20:11,842 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:20:11,842 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 94 transitions. [2020-11-28 03:20:11,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-11-28 03:20:11,843 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:20:11,843 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:20:11,843 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-28 03:20:11,843 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:20:11,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:20:11,844 INFO L82 PathProgramCache]: Analyzing trace with hash 2017993163, now seen corresponding path program 1 times [2020-11-28 03:20:11,844 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:20:11,844 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760115801] [2020-11-28 03:20:11,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:20:11,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:20:11,925 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:20:11,926 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760115801] [2020-11-28 03:20:11,926 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:20:11,926 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:20:11,926 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544604565] [2020-11-28 03:20:11,927 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:20:11,927 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:20:11,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:20:11,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:20:11,928 INFO L87 Difference]: Start difference. First operand 64 states and 94 transitions. Second operand 3 states. [2020-11-28 03:20:12,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:20:12,040 INFO L93 Difference]: Finished difference Result 182 states and 272 transitions. [2020-11-28 03:20:12,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:20:12,040 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-11-28 03:20:12,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:20:12,042 INFO L225 Difference]: With dead ends: 182 [2020-11-28 03:20:12,042 INFO L226 Difference]: Without dead ends: 117 [2020-11-28 03:20:12,043 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 [2020-11-28 03:20:12,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-11-28 03:20:12,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 108. [2020-11-28 03:20:12,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-11-28 03:20:12,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 160 transitions. [2020-11-28 03:20:12,067 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 160 transitions. Word has length 20 [2020-11-28 03:20:12,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:20:12,067 INFO L481 AbstractCegarLoop]: Abstraction has 108 states and 160 transitions. [2020-11-28 03:20:12,067 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:20:12,067 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 160 transitions. [2020-11-28 03:20:12,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-11-28 03:20:12,068 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:20:12,069 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:20:12,069 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-28 03:20:12,069 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:20:12,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:20:12,070 INFO L82 PathProgramCache]: Analyzing trace with hash 1713693363, now seen corresponding path program 1 times [2020-11-28 03:20:12,070 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:20:12,070 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449850295] [2020-11-28 03:20:12,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:20:12,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:20:12,147 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-28 03:20:12,147 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449850295] [2020-11-28 03:20:12,148 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:20:12,148 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:20:12,148 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767406882] [2020-11-28 03:20:12,148 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:20:12,149 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:20:12,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:20:12,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:20:12,150 INFO L87 Difference]: Start difference. First operand 108 states and 160 transitions. Second operand 3 states. [2020-11-28 03:20:12,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:20:12,177 INFO L93 Difference]: Finished difference Result 178 states and 264 transitions. [2020-11-28 03:20:12,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:20:12,178 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2020-11-28 03:20:12,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:20:12,179 INFO L225 Difference]: With dead ends: 178 [2020-11-28 03:20:12,179 INFO L226 Difference]: Without dead ends: 73 [2020-11-28 03:20:12,180 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 [2020-11-28 03:20:12,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-11-28 03:20:12,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2020-11-28 03:20:12,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-11-28 03:20:12,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 101 transitions. [2020-11-28 03:20:12,186 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 101 transitions. Word has length 27 [2020-11-28 03:20:12,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:20:12,187 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 101 transitions. [2020-11-28 03:20:12,187 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:20:12,187 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 101 transitions. [2020-11-28 03:20:12,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-11-28 03:20:12,188 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:20:12,188 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:20:12,189 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-28 03:20:12,189 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:20:12,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:20:12,190 INFO L82 PathProgramCache]: Analyzing trace with hash 1521721792, now seen corresponding path program 1 times [2020-11-28 03:20:12,190 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:20:12,190 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710926547] [2020-11-28 03:20:12,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:20:12,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:20:12,266 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-28 03:20:12,266 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710926547] [2020-11-28 03:20:12,266 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:20:12,266 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 03:20:12,266 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692823070] [2020-11-28 03:20:12,267 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 03:20:12,267 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:20:12,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:20:12,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:20:12,270 INFO L87 Difference]: Start difference. First operand 73 states and 101 transitions. Second operand 4 states. [2020-11-28 03:20:12,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:20:12,339 INFO L93 Difference]: Finished difference Result 76 states and 104 transitions. [2020-11-28 03:20:12,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 03:20:12,340 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 33 [2020-11-28 03:20:12,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:20:12,340 INFO L225 Difference]: With dead ends: 76 [2020-11-28 03:20:12,340 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 03:20:12,341 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 [2020-11-28 03:20:12,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 03:20:12,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 03:20:12,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 03:20:12,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 03:20:12,342 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 33 [2020-11-28 03:20:12,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:20:12,342 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 03:20:12,342 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 03:20:12,342 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 03:20:12,342 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 03:20:12,342 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-28 03:20:12,344 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-28 03:20:12,430 INFO L274 CegarLoopResult]: For program point L36(lines 36 51) no Hoare annotation was computed. [2020-11-28 03:20:12,430 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-28 03:20:12,430 INFO L274 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-11-28 03:20:12,431 INFO L274 CegarLoopResult]: For program point L38(lines 38 49) no Hoare annotation was computed. [2020-11-28 03:20:12,431 INFO L274 CegarLoopResult]: For program point L88(lines 88 103) no Hoare annotation was computed. [2020-11-28 03:20:12,431 INFO L274 CegarLoopResult]: For program point L55(lines 55 106) no Hoare annotation was computed. [2020-11-28 03:20:12,431 INFO L274 CegarLoopResult]: For program point L204(lines 204 219) no Hoare annotation was computed. [2020-11-28 03:20:12,431 INFO L274 CegarLoopResult]: For program point L72(lines 72 87) no Hoare annotation was computed. [2020-11-28 03:20:12,431 INFO L274 CegarLoopResult]: For program point L320(lines 320 335) no Hoare annotation was computed. [2020-11-28 03:20:12,431 INFO L274 CegarLoopResult]: For program point L188(lines 188 203) no Hoare annotation was computed. [2020-11-28 03:20:12,431 INFO L274 CegarLoopResult]: For program point L56(lines 56 71) no Hoare annotation was computed. [2020-11-28 03:20:12,432 INFO L270 CegarLoopResult]: At program point L337(lines 25 341) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_main_~this_sink~0 0))) (or (= ULTIMATE.start_main_~q~0 0) (and (<= 3 ULTIMATE.start_main_~q~0) (not .cse0)) (and (= ULTIMATE.start_main_~q~0 2) .cse0))) [2020-11-28 03:20:12,432 INFO L274 CegarLoopResult]: For program point L304(lines 304 319) no Hoare annotation was computed. [2020-11-28 03:20:12,432 INFO L274 CegarLoopResult]: For program point L172(lines 172 187) no Hoare annotation was computed. [2020-11-28 03:20:12,432 INFO L274 CegarLoopResult]: For program point L288(lines 288 303) no Hoare annotation was computed. [2020-11-28 03:20:12,432 INFO L274 CegarLoopResult]: For program point L156(lines 156 171) no Hoare annotation was computed. [2020-11-28 03:20:12,432 INFO L274 CegarLoopResult]: For program point L90(lines 90 101) no Hoare annotation was computed. [2020-11-28 03:20:12,433 INFO L274 CegarLoopResult]: For program point L272(lines 272 287) no Hoare annotation was computed. [2020-11-28 03:20:12,433 INFO L274 CegarLoopResult]: For program point L206(lines 206 217) no Hoare annotation was computed. [2020-11-28 03:20:12,433 INFO L274 CegarLoopResult]: For program point L140(lines 140 155) no Hoare annotation was computed. [2020-11-28 03:20:12,433 INFO L274 CegarLoopResult]: For program point L107(lines 107 222) no Hoare annotation was computed. [2020-11-28 03:20:12,433 INFO L274 CegarLoopResult]: For program point L74(lines 74 85) no Hoare annotation was computed. [2020-11-28 03:20:12,433 INFO L274 CegarLoopResult]: For program point L322(lines 322 333) no Hoare annotation was computed. [2020-11-28 03:20:12,433 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-28 03:20:12,433 INFO L274 CegarLoopResult]: For program point L256(lines 256 271) no Hoare annotation was computed. [2020-11-28 03:20:12,434 INFO L274 CegarLoopResult]: For program point L223(lines 223 338) no Hoare annotation was computed. [2020-11-28 03:20:12,434 INFO L274 CegarLoopResult]: For program point L190(lines 190 201) no Hoare annotation was computed. [2020-11-28 03:20:12,434 INFO L274 CegarLoopResult]: For program point L124(lines 124 139) no Hoare annotation was computed. [2020-11-28 03:20:12,434 INFO L274 CegarLoopResult]: For program point L58(lines 58 69) no Hoare annotation was computed. [2020-11-28 03:20:12,434 INFO L270 CegarLoopResult]: At program point L25-2(lines 25 341) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_main_~this_sink~0 0))) (or (and (= ULTIMATE.start_main_~q~0 0) .cse0) (and (<= 3 ULTIMATE.start_main_~q~0) (not .cse0)))) [2020-11-28 03:20:12,434 INFO L274 CegarLoopResult]: For program point L25-3(lines 25 341) no Hoare annotation was computed. [2020-11-28 03:20:12,434 INFO L274 CegarLoopResult]: For program point L306(lines 306 317) no Hoare annotation was computed. [2020-11-28 03:20:12,435 INFO L274 CegarLoopResult]: For program point L240(lines 240 255) no Hoare annotation was computed. [2020-11-28 03:20:12,435 INFO L274 CegarLoopResult]: For program point L174(lines 174 185) no Hoare annotation was computed. [2020-11-28 03:20:12,435 INFO L274 CegarLoopResult]: For program point L108(lines 108 123) no Hoare annotation was computed. [2020-11-28 03:20:12,435 INFO L274 CegarLoopResult]: For program point L42(lines 42 44) no Hoare annotation was computed. [2020-11-28 03:20:12,435 INFO L274 CegarLoopResult]: For program point L290(lines 290 301) no Hoare annotation was computed. [2020-11-28 03:20:12,435 INFO L274 CegarLoopResult]: For program point L224(lines 224 239) no Hoare annotation was computed. [2020-11-28 03:20:12,435 INFO L274 CegarLoopResult]: For program point L158(lines 158 169) no Hoare annotation was computed. [2020-11-28 03:20:12,435 INFO L274 CegarLoopResult]: For program point L274(lines 274 285) no Hoare annotation was computed. [2020-11-28 03:20:12,436 INFO L274 CegarLoopResult]: For program point L142(lines 142 153) no Hoare annotation was computed. [2020-11-28 03:20:12,436 INFO L274 CegarLoopResult]: For program point L258(lines 258 269) no Hoare annotation was computed. [2020-11-28 03:20:12,436 INFO L274 CegarLoopResult]: For program point L126(lines 126 137) no Hoare annotation was computed. [2020-11-28 03:20:12,436 INFO L274 CegarLoopResult]: For program point L242(lines 242 253) no Hoare annotation was computed. [2020-11-28 03:20:12,436 INFO L274 CegarLoopResult]: For program point L110(lines 110 121) no Hoare annotation was computed. [2020-11-28 03:20:12,436 INFO L274 CegarLoopResult]: For program point L226(lines 226 237) no Hoare annotation was computed. [2020-11-28 03:20:12,436 INFO L274 CegarLoopResult]: For program point L94(lines 94 96) no Hoare annotation was computed. [2020-11-28 03:20:12,436 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-28 03:20:12,437 INFO L274 CegarLoopResult]: For program point L210(lines 210 212) no Hoare annotation was computed. [2020-11-28 03:20:12,437 INFO L274 CegarLoopResult]: For program point L78(lines 78 80) no Hoare annotation was computed. [2020-11-28 03:20:12,437 INFO L274 CegarLoopResult]: For program point L326(lines 326 328) no Hoare annotation was computed. [2020-11-28 03:20:12,437 INFO L274 CegarLoopResult]: For program point L194(lines 194 196) no Hoare annotation was computed. [2020-11-28 03:20:12,437 INFO L274 CegarLoopResult]: For program point L62(lines 62 64) no Hoare annotation was computed. [2020-11-28 03:20:12,437 INFO L274 CegarLoopResult]: For program point L310(lines 310 312) no Hoare annotation was computed. [2020-11-28 03:20:12,437 INFO L274 CegarLoopResult]: For program point L178(lines 178 180) no Hoare annotation was computed. [2020-11-28 03:20:12,437 INFO L270 CegarLoopResult]: At program point L327(lines 15 346) the Hoare annotation is: false [2020-11-28 03:20:12,438 INFO L274 CegarLoopResult]: For program point L294(lines 294 296) no Hoare annotation was computed. [2020-11-28 03:20:12,438 INFO L274 CegarLoopResult]: For program point L162(lines 162 164) no Hoare annotation was computed. [2020-11-28 03:20:12,438 INFO L274 CegarLoopResult]: For program point L278(lines 278 280) no Hoare annotation was computed. [2020-11-28 03:20:12,438 INFO L274 CegarLoopResult]: For program point L146(lines 146 148) no Hoare annotation was computed. [2020-11-28 03:20:12,438 INFO L274 CegarLoopResult]: For program point L262(lines 262 264) no Hoare annotation was computed. [2020-11-28 03:20:12,438 INFO L274 CegarLoopResult]: For program point L130(lines 130 132) no Hoare annotation was computed. [2020-11-28 03:20:12,438 INFO L274 CegarLoopResult]: For program point L246(lines 246 248) no Hoare annotation was computed. [2020-11-28 03:20:12,439 INFO L274 CegarLoopResult]: For program point L114(lines 114 116) no Hoare annotation was computed. [2020-11-28 03:20:12,439 INFO L277 CegarLoopResult]: At program point L15(lines 15 346) the Hoare annotation is: true [2020-11-28 03:20:12,439 INFO L274 CegarLoopResult]: For program point L230(lines 230 232) no Hoare annotation was computed. [2020-11-28 03:20:12,439 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-28 03:20:12,439 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-28 03:20:12,439 INFO L274 CegarLoopResult]: For program point L35(lines 35 54) no Hoare annotation was computed. [2020-11-28 03:20:12,455 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 03:20:12 BoogieIcfgContainer [2020-11-28 03:20:12,455 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 03:20:12,456 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 03:20:12,456 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 03:20:12,456 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 03:20:12,457 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:20:11" (3/4) ... [2020-11-28 03:20:12,460 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 03:20:12,479 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-11-28 03:20:12,480 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-28 03:20:12,480 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 03:20:12,480 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 03:20:12,523 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_e3428dc4-127b-4f2c-b622-dfbfa7f38b2a/bin/uautomizer/witness.graphml [2020-11-28 03:20:12,526 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 03:20:12,529 INFO L168 Benchmark]: Toolchain (without parser) took 2473.03 ms. Allocated memory was 115.3 MB in the beginning and 146.8 MB in the end (delta: 31.5 MB). Free memory was 84.5 MB in the beginning and 116.5 MB in the end (delta: -31.9 MB). Peak memory consumption was 124.5 kB. Max. memory is 16.1 GB. [2020-11-28 03:20:12,529 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 77.6 MB. Free memory was 37.4 MB in the beginning and 37.3 MB in the end (delta: 63.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:20:12,530 INFO L168 Benchmark]: CACSL2BoogieTranslator took 298.77 ms. Allocated memory is still 115.3 MB. Free memory was 84.5 MB in the beginning and 90.5 MB in the end (delta: -6.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-28 03:20:12,532 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.96 ms. Allocated memory is still 115.3 MB. Free memory was 90.5 MB in the beginning and 88.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:20:12,533 INFO L168 Benchmark]: Boogie Preprocessor took 30.01 ms. Allocated memory is still 115.3 MB. Free memory was 88.4 MB in the beginning and 87.1 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:20:12,536 INFO L168 Benchmark]: RCFGBuilder took 684.04 ms. Allocated memory is still 115.3 MB. Free memory was 87.1 MB in the beginning and 59.8 MB in the end (delta: 27.3 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. [2020-11-28 03:20:12,538 INFO L168 Benchmark]: TraceAbstraction took 1339.96 ms. Allocated memory was 115.3 MB in the beginning and 146.8 MB in the end (delta: 31.5 MB). Free memory was 59.8 MB in the beginning and 118.6 MB in the end (delta: -58.9 MB). Peak memory consumption was 26.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:20:12,539 INFO L168 Benchmark]: Witness Printer took 70.39 ms. Allocated memory is still 146.8 MB. Free memory was 118.6 MB in the beginning and 116.5 MB in the end (delta: 2.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-28 03:20:12,546 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 77.6 MB. Free memory was 37.4 MB in the beginning and 37.3 MB in the end (delta: 63.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 298.77 ms. Allocated memory is still 115.3 MB. Free memory was 84.5 MB in the beginning and 90.5 MB in the end (delta: -6.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 42.96 ms. Allocated memory is still 115.3 MB. Free memory was 90.5 MB in the beginning and 88.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 30.01 ms. Allocated memory is still 115.3 MB. Free memory was 88.4 MB in the beginning and 87.1 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 684.04 ms. Allocated memory is still 115.3 MB. Free memory was 87.1 MB in the beginning and 59.8 MB in the end (delta: 27.3 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1339.96 ms. Allocated memory was 115.3 MB in the beginning and 146.8 MB in the end (delta: 31.5 MB). Free memory was 59.8 MB in the beginning and 118.6 MB in the end (delta: -58.9 MB). Peak memory consumption was 26.1 MB. Max. memory is 16.1 GB. * Witness Printer took 70.39 ms. Allocated memory is still 146.8 MB. Free memory was 118.6 MB in the beginning and 116.5 MB in the end (delta: 2.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: (q == 0 && this_sink == 0) || (3 <= q && !(this_sink == 0)) - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: (q == 0 || (3 <= q && !(this_sink == 0))) || (q == 2 && this_sink == 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 69 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.1s, OverallIterations: 6, TraceHistogramMax: 3, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 515 SDtfs, 140 SDslu, 283 SDs, 0 SdLazy, 83 SolverSat, 35 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=108occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 11 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 12 NumberOfFragments, 37 HoareAnnotationTreeSize, 4 FomulaSimplifications, 30 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 114 NumberOfCodeBlocks, 114 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 108 ConstructedInterpolants, 0 QuantifiedInterpolants, 4362 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 19/19 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...