./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/list-properties/splice-1.i --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_d86c905b-ce31-4f87-9e64-c474f4792fce/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_d86c905b-ce31-4f87-9e64-c474f4792fce/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_d86c905b-ce31-4f87-9e64-c474f4792fce/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_d86c905b-ce31-4f87-9e64-c474f4792fce/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/list-properties/splice-1.i -s /tmp/vcloud-vcloud-master/worker/run_dir_d86c905b-ce31-4f87-9e64-c474f4792fce/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_d86c905b-ce31-4f87-9e64-c474f4792fce/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 336180afe1780bd2c4e24c39131e05a2fcb6ebf1 ..................................................................................................................................................................................................................................................................................................................................................................................................................... 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 [2019-11-19 23:19:02,796 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-19 23:19:02,798 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-19 23:19:02,808 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-19 23:19:02,809 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-19 23:19:02,809 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-19 23:19:02,811 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-19 23:19:02,813 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-19 23:19:02,815 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-19 23:19:02,816 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-19 23:19:02,816 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-19 23:19:02,818 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-19 23:19:02,818 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-19 23:19:02,819 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-19 23:19:02,820 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-19 23:19:02,821 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-19 23:19:02,822 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-19 23:19:02,822 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-19 23:19:02,824 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-19 23:19:02,826 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-19 23:19:02,828 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-19 23:19:02,829 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-19 23:19:02,830 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-19 23:19:02,830 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-19 23:19:02,833 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-19 23:19:02,833 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-19 23:19:02,833 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-19 23:19:02,834 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-19 23:19:02,834 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-19 23:19:02,835 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-19 23:19:02,836 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-19 23:19:02,836 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-19 23:19:02,837 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-19 23:19:02,838 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-19 23:19:02,839 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-19 23:19:02,839 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-19 23:19:02,839 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-19 23:19:02,840 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-19 23:19:02,840 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-19 23:19:02,841 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-19 23:19:02,841 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-19 23:19:02,842 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_d86c905b-ce31-4f87-9e64-c474f4792fce/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-19 23:19:02,854 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-19 23:19:02,855 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-19 23:19:02,856 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-19 23:19:02,856 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-19 23:19:02,856 INFO L138 SettingsManager]: * Use SBE=true [2019-11-19 23:19:02,856 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-19 23:19:02,857 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-19 23:19:02,857 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-19 23:19:02,857 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-19 23:19:02,857 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-19 23:19:02,857 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-19 23:19:02,862 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-19 23:19:02,862 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-19 23:19:02,862 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-19 23:19:02,862 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-19 23:19:02,862 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-19 23:19:02,863 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-19 23:19:02,863 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-19 23:19:02,863 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-19 23:19:02,863 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-19 23:19:02,864 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-19 23:19:02,864 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-19 23:19:02,864 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-19 23:19:02,864 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-19 23:19:02,864 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-19 23:19:02,865 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-19 23:19:02,865 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-19 23:19:02,865 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-19 23:19:02,865 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_d86c905b-ce31-4f87-9e64-c474f4792fce/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 -> 336180afe1780bd2c4e24c39131e05a2fcb6ebf1 [2019-11-19 23:19:03,000 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-19 23:19:03,011 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-19 23:19:03,017 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-19 23:19:03,019 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-19 23:19:03,019 INFO L275 PluginConnector]: CDTParser initialized [2019-11-19 23:19:03,020 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_d86c905b-ce31-4f87-9e64-c474f4792fce/bin/uautomizer/../../sv-benchmarks/c/list-properties/splice-1.i [2019-11-19 23:19:03,071 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d86c905b-ce31-4f87-9e64-c474f4792fce/bin/uautomizer/data/26c864e69/3aaeebc32aac4618969e8d806d8bbdcd/FLAGd3c32a2fa [2019-11-19 23:19:03,540 INFO L306 CDTParser]: Found 1 translation units. [2019-11-19 23:19:03,541 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_d86c905b-ce31-4f87-9e64-c474f4792fce/sv-benchmarks/c/list-properties/splice-1.i [2019-11-19 23:19:03,559 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d86c905b-ce31-4f87-9e64-c474f4792fce/bin/uautomizer/data/26c864e69/3aaeebc32aac4618969e8d806d8bbdcd/FLAGd3c32a2fa [2019-11-19 23:19:03,576 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_d86c905b-ce31-4f87-9e64-c474f4792fce/bin/uautomizer/data/26c864e69/3aaeebc32aac4618969e8d806d8bbdcd [2019-11-19 23:19:03,580 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-19 23:19:03,582 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-19 23:19:03,585 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-19 23:19:03,585 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-19 23:19:03,588 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-19 23:19:03,589 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 11:19:03" (1/1) ... [2019-11-19 23:19:03,592 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@205e4e69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:19:03, skipping insertion in model container [2019-11-19 23:19:03,593 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 11:19:03" (1/1) ... [2019-11-19 23:19:03,600 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-19 23:19:03,647 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-19 23:19:04,070 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-19 23:19:04,082 INFO L188 MainTranslator]: Completed pre-run [2019-11-19 23:19:04,120 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-19 23:19:04,167 INFO L192 MainTranslator]: Completed translation [2019-11-19 23:19:04,168 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:19:04 WrapperNode [2019-11-19 23:19:04,168 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-19 23:19:04,169 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-19 23:19:04,169 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-19 23:19:04,169 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-19 23:19:04,176 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:19:04" (1/1) ... [2019-11-19 23:19:04,189 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:19:04" (1/1) ... [2019-11-19 23:19:04,208 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-19 23:19:04,209 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-19 23:19:04,209 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-19 23:19:04,209 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-19 23:19:04,217 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:19:04" (1/1) ... [2019-11-19 23:19:04,217 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:19:04" (1/1) ... [2019-11-19 23:19:04,221 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:19:04" (1/1) ... [2019-11-19 23:19:04,222 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:19:04" (1/1) ... [2019-11-19 23:19:04,229 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:19:04" (1/1) ... [2019-11-19 23:19:04,234 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:19:04" (1/1) ... [2019-11-19 23:19:04,236 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:19:04" (1/1) ... [2019-11-19 23:19:04,239 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-19 23:19:04,239 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-19 23:19:04,240 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-19 23:19:04,240 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-19 23:19:04,241 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:19:04" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d86c905b-ce31-4f87-9e64-c474f4792fce/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 [2019-11-19 23:19:04,298 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-19 23:19:04,298 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-19 23:19:04,298 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-19 23:19:04,298 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-19 23:19:04,299 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-19 23:19:04,299 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-19 23:19:04,299 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-19 23:19:04,623 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-19 23:19:04,623 INFO L285 CfgBuilder]: Removed 12 assume(true) statements. [2019-11-19 23:19:04,624 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 11:19:04 BoogieIcfgContainer [2019-11-19 23:19:04,624 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-19 23:19:04,625 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-19 23:19:04,625 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-19 23:19:04,628 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-19 23:19:04,628 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 11:19:03" (1/3) ... [2019-11-19 23:19:04,629 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@327adc40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 11:19:04, skipping insertion in model container [2019-11-19 23:19:04,629 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:19:04" (2/3) ... [2019-11-19 23:19:04,630 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@327adc40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 11:19:04, skipping insertion in model container [2019-11-19 23:19:04,630 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 11:19:04" (3/3) ... [2019-11-19 23:19:04,631 INFO L109 eAbstractionObserver]: Analyzing ICFG splice-1.i [2019-11-19 23:19:04,640 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-19 23:19:04,645 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-19 23:19:04,655 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-19 23:19:04,676 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-19 23:19:04,676 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-19 23:19:04,676 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-19 23:19:04,676 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-19 23:19:04,676 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-19 23:19:04,677 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-19 23:19:04,677 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-19 23:19:04,677 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-19 23:19:04,690 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2019-11-19 23:19:04,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-19 23:19:04,695 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 23:19:04,695 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 23:19:04,696 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 23:19:04,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 23:19:04,701 INFO L82 PathProgramCache]: Analyzing trace with hash -427823588, now seen corresponding path program 1 times [2019-11-19 23:19:04,707 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 23:19:04,707 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984207455] [2019-11-19 23:19:04,707 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 23:19:04,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 23:19:04,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 23:19:04,821 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984207455] [2019-11-19 23:19:04,822 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-19 23:19:04,822 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-19 23:19:04,823 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685089617] [2019-11-19 23:19:04,827 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-19 23:19:04,827 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 23:19:04,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-19 23:19:04,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-19 23:19:04,841 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 2 states. [2019-11-19 23:19:04,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 23:19:04,858 INFO L93 Difference]: Finished difference Result 46 states and 69 transitions. [2019-11-19 23:19:04,858 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-19 23:19:04,859 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2019-11-19 23:19:04,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 23:19:04,867 INFO L225 Difference]: With dead ends: 46 [2019-11-19 23:19:04,868 INFO L226 Difference]: Without dead ends: 23 [2019-11-19 23:19:04,870 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 [2019-11-19 23:19:04,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-11-19 23:19:04,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2019-11-19 23:19:04,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-11-19 23:19:04,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 29 transitions. [2019-11-19 23:19:04,900 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 29 transitions. Word has length 12 [2019-11-19 23:19:04,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 23:19:04,900 INFO L462 AbstractCegarLoop]: Abstraction has 23 states and 29 transitions. [2019-11-19 23:19:04,900 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-19 23:19:04,900 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 29 transitions. [2019-11-19 23:19:04,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-19 23:19:04,901 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 23:19:04,901 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 23:19:04,902 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 23:19:04,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 23:19:04,902 INFO L82 PathProgramCache]: Analyzing trace with hash 1140031955, now seen corresponding path program 1 times [2019-11-19 23:19:04,902 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 23:19:04,902 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343659838] [2019-11-19 23:19:04,903 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 23:19:04,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 23:19:04,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 23:19:04,987 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343659838] [2019-11-19 23:19:04,988 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-19 23:19:04,988 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-19 23:19:04,988 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033967748] [2019-11-19 23:19:04,989 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-19 23:19:04,990 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 23:19:04,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-19 23:19:04,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-19 23:19:04,990 INFO L87 Difference]: Start difference. First operand 23 states and 29 transitions. Second operand 4 states. [2019-11-19 23:19:05,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 23:19:05,080 INFO L93 Difference]: Finished difference Result 40 states and 51 transitions. [2019-11-19 23:19:05,081 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-19 23:19:05,081 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2019-11-19 23:19:05,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 23:19:05,082 INFO L225 Difference]: With dead ends: 40 [2019-11-19 23:19:05,082 INFO L226 Difference]: Without dead ends: 33 [2019-11-19 23:19:05,083 INFO L630 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 [2019-11-19 23:19:05,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2019-11-19 23:19:05,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 28. [2019-11-19 23:19:05,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-11-19 23:19:05,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 36 transitions. [2019-11-19 23:19:05,089 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 36 transitions. Word has length 14 [2019-11-19 23:19:05,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 23:19:05,089 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 36 transitions. [2019-11-19 23:19:05,089 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-19 23:19:05,089 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 36 transitions. [2019-11-19 23:19:05,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-19 23:19:05,090 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 23:19:05,090 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 23:19:05,091 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 23:19:05,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 23:19:05,091 INFO L82 PathProgramCache]: Analyzing trace with hash 352372424, now seen corresponding path program 1 times [2019-11-19 23:19:05,091 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 23:19:05,092 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993638550] [2019-11-19 23:19:05,092 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 23:19:05,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 23:19:05,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 23:19:05,170 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993638550] [2019-11-19 23:19:05,170 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-19 23:19:05,170 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-19 23:19:05,170 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347381672] [2019-11-19 23:19:05,171 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-19 23:19:05,171 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 23:19:05,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-19 23:19:05,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-19 23:19:05,171 INFO L87 Difference]: Start difference. First operand 28 states and 36 transitions. Second operand 4 states. [2019-11-19 23:19:05,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 23:19:05,256 INFO L93 Difference]: Finished difference Result 47 states and 60 transitions. [2019-11-19 23:19:05,258 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-19 23:19:05,258 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2019-11-19 23:19:05,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 23:19:05,260 INFO L225 Difference]: With dead ends: 47 [2019-11-19 23:19:05,260 INFO L226 Difference]: Without dead ends: 39 [2019-11-19 23:19:05,261 INFO L630 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 [2019-11-19 23:19:05,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2019-11-19 23:19:05,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 37. [2019-11-19 23:19:05,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2019-11-19 23:19:05,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 49 transitions. [2019-11-19 23:19:05,268 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 49 transitions. Word has length 16 [2019-11-19 23:19:05,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 23:19:05,268 INFO L462 AbstractCegarLoop]: Abstraction has 37 states and 49 transitions. [2019-11-19 23:19:05,268 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-19 23:19:05,268 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 49 transitions. [2019-11-19 23:19:05,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-11-19 23:19:05,269 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 23:19:05,269 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 23:19:05,269 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 23:19:05,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 23:19:05,273 INFO L82 PathProgramCache]: Analyzing trace with hash -1051666739, now seen corresponding path program 1 times [2019-11-19 23:19:05,273 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 23:19:05,273 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628431023] [2019-11-19 23:19:05,273 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 23:19:05,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 23:19:05,374 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 23:19:05,374 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628431023] [2019-11-19 23:19:05,374 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-19 23:19:05,374 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-19 23:19:05,374 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563502102] [2019-11-19 23:19:05,375 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-19 23:19:05,375 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 23:19:05,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-19 23:19:05,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-19 23:19:05,376 INFO L87 Difference]: Start difference. First operand 37 states and 49 transitions. Second operand 6 states. [2019-11-19 23:19:05,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 23:19:05,518 INFO L93 Difference]: Finished difference Result 70 states and 94 transitions. [2019-11-19 23:19:05,519 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-19 23:19:05,519 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2019-11-19 23:19:05,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 23:19:05,520 INFO L225 Difference]: With dead ends: 70 [2019-11-19 23:19:05,520 INFO L226 Difference]: Without dead ends: 43 [2019-11-19 23:19:05,521 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2019-11-19 23:19:05,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2019-11-19 23:19:05,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 39. [2019-11-19 23:19:05,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2019-11-19 23:19:05,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 51 transitions. [2019-11-19 23:19:05,527 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 51 transitions. Word has length 17 [2019-11-19 23:19:05,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 23:19:05,527 INFO L462 AbstractCegarLoop]: Abstraction has 39 states and 51 transitions. [2019-11-19 23:19:05,528 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-19 23:19:05,528 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 51 transitions. [2019-11-19 23:19:05,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-11-19 23:19:05,528 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 23:19:05,529 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 23:19:05,529 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 23:19:05,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 23:19:05,529 INFO L82 PathProgramCache]: Analyzing trace with hash -86042878, now seen corresponding path program 1 times [2019-11-19 23:19:05,529 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 23:19:05,530 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271431968] [2019-11-19 23:19:05,530 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 23:19:05,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 23:19:05,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 23:19:05,621 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-19 23:19:05,621 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-19 23:19:05,654 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 11:19:05 BoogieIcfgContainer [2019-11-19 23:19:05,654 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-19 23:19:05,655 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-19 23:19:05,655 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-19 23:19:05,655 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-19 23:19:05,656 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 11:19:04" (3/4) ... [2019-11-19 23:19:05,658 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-19 23:19:05,712 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_d86c905b-ce31-4f87-9e64-c474f4792fce/bin/uautomizer/witness.graphml [2019-11-19 23:19:05,713 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-19 23:19:05,715 INFO L168 Benchmark]: Toolchain (without parser) took 2132.56 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 110.1 MB). Free memory was 946.1 MB in the beginning and 972.2 MB in the end (delta: -26.1 MB). Peak memory consumption was 84.0 MB. Max. memory is 11.5 GB. [2019-11-19 23:19:05,715 INFO L168 Benchmark]: CDTParser took 0.22 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. [2019-11-19 23:19:05,716 INFO L168 Benchmark]: CACSL2BoogieTranslator took 583.76 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 110.1 MB). Free memory was 946.1 MB in the beginning and 1.1 GB in the end (delta: -141.1 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. [2019-11-19 23:19:05,716 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.19 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-11-19 23:19:05,717 INFO L168 Benchmark]: Boogie Preprocessor took 30.26 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 11.5 GB. [2019-11-19 23:19:05,717 INFO L168 Benchmark]: RCFGBuilder took 384.73 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 27.8 MB). Peak memory consumption was 27.8 MB. Max. memory is 11.5 GB. [2019-11-19 23:19:05,718 INFO L168 Benchmark]: TraceAbstraction took 1029.48 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 977.6 MB in the end (delta: 75.2 MB). Peak memory consumption was 75.2 MB. Max. memory is 11.5 GB. [2019-11-19 23:19:05,718 INFO L168 Benchmark]: Witness Printer took 58.01 ms. Allocated memory is still 1.1 GB. Free memory was 977.6 MB in the beginning and 972.2 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-11-19 23:19:05,721 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 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 583.76 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 110.1 MB). Free memory was 946.1 MB in the beginning and 1.1 GB in the end (delta: -141.1 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 40.19 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 30.26 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 11.5 GB. * RCFGBuilder took 384.73 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 27.8 MB). Peak memory consumption was 27.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1029.48 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 977.6 MB in the end (delta: 75.2 MB). Peak memory consumption was 75.2 MB. Max. memory is 11.5 GB. * Witness Printer took 58.01 ms. Allocated memory is still 1.1 GB. Free memory was 977.6 MB in the beginning and 972.2 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 573]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L521] int flag = 1; [L522] List a = (List) malloc(sizeof(struct node)); [L523] COND FALSE !(a == 0) [L524] List t; [L525] List l1; [L526] List l2; [L527] List b; [L528] List u; [L529] List p = a; [L530] COND TRUE __VERIFIER_nondet_int() [L531] COND TRUE \read(flag) [L532] p->h = 1 [L533] flag = 0 [L538] t = (List) malloc(sizeof(struct node)) [L539] COND FALSE !(t == 0) [L540] p->n = t [L541] EXPR p->n [L541] p = p->n [L530] COND FALSE !(__VERIFIER_nondet_int()) [L543] p->h = 3 [L544] EXPR a->h [L544] COND FALSE !(a->h == 3) [L545] flag = 1 [L546] l1 = 0 [L547] l2 = 0 [L548] p = a [L549] EXPR p->h [L549] COND TRUE p->h != 3 [L550] t = p [L551] EXPR p->n [L551] p = p->n [L552] COND TRUE \read(flag) [L553] t->n = l1 [L554] l1 = t [L555] flag = 0 [L549] EXPR p->h [L549] COND FALSE !(p->h != 3) [L562] p = l1 [L563] COND TRUE p != 0 [L564] EXPR p->h [L564] COND TRUE p->h != 2 [L573] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 29 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.9s, OverallIterations: 5, TraceHistogramMax: 2, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 113 SDtfs, 26 SDslu, 130 SDs, 0 SdLazy, 107 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 20 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred 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, 4 MinimizatonAttempts, 11 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 82 NumberOfCodeBlocks, 82 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 55 ConstructedInterpolants, 0 QuantifiedInterpolants, 2135 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 2/2 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...