./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loops/while_infinite_loop_4.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 678e0110 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_7285232a-7ed5-4318-90c5-a59f68340a7e/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_7285232a-7ed5-4318-90c5-a59f68340a7e/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_7285232a-7ed5-4318-90c5-a59f68340a7e/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_7285232a-7ed5-4318-90c5-a59f68340a7e/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loops/while_infinite_loop_4.c -s /tmp/vcloud-vcloud-master/worker/run_dir_7285232a-7ed5-4318-90c5-a59f68340a7e/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_7285232a-7ed5-4318-90c5-a59f68340a7e/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ef9ee2b82a40720ec57dc1562759dd601b686b38 .................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.24-678e011 [2019-11-20 10:44:25,057 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-20 10:44:25,059 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-20 10:44:25,072 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-20 10:44:25,073 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 10:44:25,074 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 10:44:25,076 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 10:44:25,078 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 10:44:25,081 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 10:44:25,082 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 10:44:25,083 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 10:44:25,084 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 10:44:25,085 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 10:44:25,086 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 10:44:25,087 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 10:44:25,089 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 10:44:25,094 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 10:44:25,098 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 10:44:25,101 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 10:44:25,104 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 10:44:25,108 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 10:44:25,113 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 10:44:25,116 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 10:44:25,119 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 10:44:25,122 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 10:44:25,125 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 10:44:25,125 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 10:44:25,126 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 10:44:25,128 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 10:44:25,129 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 10:44:25,130 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 10:44:25,131 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 10:44:25,132 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 10:44:25,134 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 10:44:25,135 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 10:44:25,136 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 10:44:25,137 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 10:44:25,137 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 10:44:25,137 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 10:44:25,139 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 10:44:25,141 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 10:44:25,141 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_7285232a-7ed5-4318-90c5-a59f68340a7e/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-20 10:44:25,163 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 10:44:25,163 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 10:44:25,165 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 10:44:25,165 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 10:44:25,165 INFO L138 SettingsManager]: * Use SBE=true [2019-11-20 10:44:25,166 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 10:44:25,166 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-20 10:44:25,166 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-20 10:44:25,166 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-20 10:44:25,167 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 10:44:25,168 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-20 10:44:25,168 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-20 10:44:25,168 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-20 10:44:25,169 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-20 10:44:25,169 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-20 10:44:25,169 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 10:44:25,169 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-20 10:44:25,170 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 10:44:25,170 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-20 10:44:25,170 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-20 10:44:25,171 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-20 10:44:25,171 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 10:44:25,171 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 10:44:25,171 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-20 10:44:25,172 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-20 10:44:25,172 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-20 10:44:25,172 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-20 10:44:25,173 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-20 10:44:25,173 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_7285232a-7ed5-4318-90c5-a59f68340a7e/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(__VERIFIER_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 -> ef9ee2b82a40720ec57dc1562759dd601b686b38 [2019-11-20 10:44:25,341 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 10:44:25,364 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 10:44:25,368 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 10:44:25,369 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 10:44:25,370 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 10:44:25,371 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_7285232a-7ed5-4318-90c5-a59f68340a7e/bin/uautomizer/../../sv-benchmarks/c/loops/while_infinite_loop_4.c [2019-11-20 10:44:25,449 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_7285232a-7ed5-4318-90c5-a59f68340a7e/bin/uautomizer/data/0eeb59370/90e7485068024b808dba0a5acc0913e3/FLAG474e88141 [2019-11-20 10:44:25,853 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 10:44:25,854 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_7285232a-7ed5-4318-90c5-a59f68340a7e/sv-benchmarks/c/loops/while_infinite_loop_4.c [2019-11-20 10:44:25,862 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_7285232a-7ed5-4318-90c5-a59f68340a7e/bin/uautomizer/data/0eeb59370/90e7485068024b808dba0a5acc0913e3/FLAG474e88141 [2019-11-20 10:44:26,285 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_7285232a-7ed5-4318-90c5-a59f68340a7e/bin/uautomizer/data/0eeb59370/90e7485068024b808dba0a5acc0913e3 [2019-11-20 10:44:26,288 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 10:44:26,289 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-20 10:44:26,291 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 10:44:26,291 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 10:44:26,295 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 10:44:26,296 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:44:26" (1/1) ... [2019-11-20 10:44:26,299 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@165cb45e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:44:26, skipping insertion in model container [2019-11-20 10:44:26,300 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:44:26" (1/1) ... [2019-11-20 10:44:26,308 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 10:44:26,333 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 10:44:26,537 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 10:44:26,545 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 10:44:26,663 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 10:44:26,681 INFO L192 MainTranslator]: Completed translation [2019-11-20 10:44:26,682 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:44:26 WrapperNode [2019-11-20 10:44:26,683 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 10:44:26,684 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-20 10:44:26,684 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-20 10:44:26,684 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-20 10:44:26,694 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:44:26" (1/1) ... [2019-11-20 10:44:26,699 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:44:26" (1/1) ... [2019-11-20 10:44:26,718 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-20 10:44:26,720 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 10:44:26,720 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 10:44:26,720 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 10:44:26,730 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:44:26" (1/1) ... [2019-11-20 10:44:26,730 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:44:26" (1/1) ... [2019-11-20 10:44:26,731 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:44:26" (1/1) ... [2019-11-20 10:44:26,731 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:44:26" (1/1) ... [2019-11-20 10:44:26,734 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:44:26" (1/1) ... [2019-11-20 10:44:26,740 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:44:26" (1/1) ... [2019-11-20 10:44:26,741 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:44:26" (1/1) ... [2019-11-20 10:44:26,746 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 10:44:26,747 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 10:44:26,747 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 10:44:26,747 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 10:44:26,750 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:44:26" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7285232a-7ed5-4318-90c5-a59f68340a7e/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 [2019-11-20 10:44:26,825 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 10:44:26,826 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 10:44:27,028 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 10:44:27,029 INFO L285 CfgBuilder]: Removed 12 assume(true) statements. [2019-11-20 10:44:27,030 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:44:27 BoogieIcfgContainer [2019-11-20 10:44:27,030 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 10:44:27,031 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-20 10:44:27,031 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-20 10:44:27,035 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-20 10:44:27,036 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 10:44:26" (1/3) ... [2019-11-20 10:44:27,038 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24e7948 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:44:27, skipping insertion in model container [2019-11-20 10:44:27,038 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:44:26" (2/3) ... [2019-11-20 10:44:27,038 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24e7948 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:44:27, skipping insertion in model container [2019-11-20 10:44:27,039 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:44:27" (3/3) ... [2019-11-20 10:44:27,041 INFO L109 eAbstractionObserver]: Analyzing ICFG while_infinite_loop_4.c [2019-11-20 10:44:27,050 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-20 10:44:27,056 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2019-11-20 10:44:27,068 INFO L249 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2019-11-20 10:44:27,098 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-20 10:44:27,098 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-20 10:44:27,098 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-20 10:44:27,098 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-20 10:44:27,098 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-20 10:44:27,099 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-20 10:44:27,099 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-20 10:44:27,100 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-20 10:44:27,120 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2019-11-20 10:44:27,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-20 10:44:27,126 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 10:44:27,127 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-11-20 10:44:27,128 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 10:44:27,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:44:27,135 INFO L82 PathProgramCache]: Analyzing trace with hash 890491815, now seen corresponding path program 1 times [2019-11-20 10:44:27,144 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 10:44:27,145 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395433403] [2019-11-20 10:44:27,146 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 10:44:27,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:44:27,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 10:44:27,268 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395433403] [2019-11-20 10:44:27,269 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 10:44:27,270 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-20 10:44:27,272 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074061453] [2019-11-20 10:44:27,277 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-20 10:44:27,277 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 10:44:27,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-20 10:44:27,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-20 10:44:27,295 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 2 states. [2019-11-20 10:44:27,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 10:44:27,321 INFO L93 Difference]: Finished difference Result 22 states and 32 transitions. [2019-11-20 10:44:27,321 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-20 10:44:27,323 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2019-11-20 10:44:27,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 10:44:27,335 INFO L225 Difference]: With dead ends: 22 [2019-11-20 10:44:27,335 INFO L226 Difference]: Without dead ends: 8 [2019-11-20 10:44:27,339 INFO L630 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 [2019-11-20 10:44:27,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2019-11-20 10:44:27,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2019-11-20 10:44:27,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2019-11-20 10:44:27,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2019-11-20 10:44:27,378 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2019-11-20 10:44:27,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 10:44:27,379 INFO L462 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2019-11-20 10:44:27,379 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-20 10:44:27,379 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2019-11-20 10:44:27,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-20 10:44:27,380 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 10:44:27,381 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-20 10:44:27,381 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 10:44:27,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:44:27,382 INFO L82 PathProgramCache]: Analyzing trace with hash 1810848111, now seen corresponding path program 1 times [2019-11-20 10:44:27,382 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 10:44:27,382 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503319746] [2019-11-20 10:44:27,383 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 10:44:27,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 10:44:27,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 10:44:27,441 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 10:44:27,442 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-20 10:44:27,472 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 10:44:27 BoogieIcfgContainer [2019-11-20 10:44:27,473 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-20 10:44:27,473 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-20 10:44:27,473 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-20 10:44:27,474 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-20 10:44:27,474 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:44:27" (3/4) ... [2019-11-20 10:44:27,477 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-20 10:44:27,522 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_7285232a-7ed5-4318-90c5-a59f68340a7e/bin/uautomizer/witness.graphml [2019-11-20 10:44:27,522 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-20 10:44:27,524 INFO L168 Benchmark]: Toolchain (without parser) took 1234.08 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 153.1 MB). Free memory was 946.1 MB in the beginning and 1.1 GB in the end (delta: -161.9 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 10:44:27,525 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 1.0 GB. Free memory is still 967.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 10:44:27,526 INFO L168 Benchmark]: CACSL2BoogieTranslator took 392.94 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 153.1 MB). Free memory was 946.1 MB in the beginning and 1.1 GB in the end (delta: -201.7 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. [2019-11-20 10:44:27,526 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.62 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 10:44:27,526 INFO L168 Benchmark]: Boogie Preprocessor took 27.03 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 10:44:27,527 INFO L168 Benchmark]: RCFGBuilder took 283.09 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.3 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. [2019-11-20 10:44:27,528 INFO L168 Benchmark]: TraceAbstraction took 442.04 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 21.5 MB). Peak memory consumption was 21.5 MB. Max. memory is 11.5 GB. [2019-11-20 10:44:27,528 INFO L168 Benchmark]: Witness Printer took 48.75 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 10:44:27,532 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 1.0 GB. Free memory is still 967.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 392.94 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 153.1 MB). Free memory was 946.1 MB in the beginning and 1.1 GB in the end (delta: -201.7 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 35.62 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 27.03 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 283.09 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.3 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 442.04 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 21.5 MB). Peak memory consumption was 21.5 MB. Max. memory is 11.5 GB. * Witness Printer took 48.75 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 5]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L10] int x=0; VAL [x=0] [L24] COND TRUE 1 VAL [x=0] [L14] COND TRUE 1 [L15] x=1 VAL [x=1] [L4] COND TRUE !(cond) VAL [x=1] [L5] __VERIFIER_error() VAL [x=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 2 error locations. Result: UNSAFE, OverallTime: 0.3s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 8 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred in iteration=0, 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 13 NumberOfCodeBlocks, 13 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 5 ConstructedInterpolants, 0 QuantifiedInterpolants, 25 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...