./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-regression/test23-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_cb8a5c83-27db-4a8f-b461-fc2f8109aedb/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_cb8a5c83-27db-4a8f-b461-fc2f8109aedb/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_cb8a5c83-27db-4a8f-b461-fc2f8109aedb/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_cb8a5c83-27db-4a8f-b461-fc2f8109aedb/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-regression/test23-2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_cb8a5c83-27db-4a8f-b461-fc2f8109aedb/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_cb8a5c83-27db-4a8f-b461-fc2f8109aedb/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 308e43cca528a064aecd41d099b341627e43bb71 .................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_cb8a5c83-27db-4a8f-b461-fc2f8109aedb/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_cb8a5c83-27db-4a8f-b461-fc2f8109aedb/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_cb8a5c83-27db-4a8f-b461-fc2f8109aedb/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_cb8a5c83-27db-4a8f-b461-fc2f8109aedb/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-regression/test23-2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_cb8a5c83-27db-4a8f-b461-fc2f8109aedb/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_cb8a5c83-27db-4a8f-b461-fc2f8109aedb/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 308e43cca528a064aecd41d099b341627e43bb71 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-12-07 15:23:15,576 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 15:23:15,578 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 15:23:15,586 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 15:23:15,587 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 15:23:15,587 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 15:23:15,588 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 15:23:15,589 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 15:23:15,591 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 15:23:15,591 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 15:23:15,592 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 15:23:15,593 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 15:23:15,593 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 15:23:15,593 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 15:23:15,594 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 15:23:15,595 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 15:23:15,595 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 15:23:15,596 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 15:23:15,597 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 15:23:15,599 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 15:23:15,600 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 15:23:15,601 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 15:23:15,601 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 15:23:15,602 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 15:23:15,604 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 15:23:15,604 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 15:23:15,604 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 15:23:15,604 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 15:23:15,605 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 15:23:15,605 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 15:23:15,605 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 15:23:15,606 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 15:23:15,606 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 15:23:15,607 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 15:23:15,607 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 15:23:15,607 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 15:23:15,608 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 15:23:15,608 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 15:23:15,608 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 15:23:15,608 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 15:23:15,609 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 15:23:15,609 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_cb8a5c83-27db-4a8f-b461-fc2f8109aedb/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-12-07 15:23:15,618 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 15:23:15,618 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 15:23:15,619 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 15:23:15,619 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 15:23:15,619 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 15:23:15,619 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 15:23:15,620 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 15:23:15,620 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 15:23:15,620 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 15:23:15,620 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 15:23:15,620 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 15:23:15,620 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 15:23:15,620 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 15:23:15,620 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 15:23:15,620 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 15:23:15,620 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 15:23:15,621 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 15:23:15,621 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 15:23:15,621 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 15:23:15,621 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 15:23:15,621 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 15:23:15,621 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 15:23:15,621 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 15:23:15,621 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 15:23:15,621 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 15:23:15,622 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-07 15:23:15,622 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 15:23:15,622 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 15:23:15,622 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 15:23:15,622 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_cb8a5c83-27db-4a8f-b461-fc2f8109aedb/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 -> 308e43cca528a064aecd41d099b341627e43bb71 [2019-12-07 15:23:15,720 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 15:23:15,730 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 15:23:15,733 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 15:23:15,735 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 15:23:15,735 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 15:23:15,735 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_cb8a5c83-27db-4a8f-b461-fc2f8109aedb/bin/uautomizer/../../sv-benchmarks/c/ldv-regression/test23-2.c [2019-12-07 15:23:15,780 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_cb8a5c83-27db-4a8f-b461-fc2f8109aedb/bin/uautomizer/data/f1223200f/ca62c8dabcca495ea16b44d88a19cc0d/FLAGe67c6e02e [2019-12-07 15:23:16,132 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 15:23:16,132 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_cb8a5c83-27db-4a8f-b461-fc2f8109aedb/sv-benchmarks/c/ldv-regression/test23-2.c [2019-12-07 15:23:16,136 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_cb8a5c83-27db-4a8f-b461-fc2f8109aedb/bin/uautomizer/data/f1223200f/ca62c8dabcca495ea16b44d88a19cc0d/FLAGe67c6e02e [2019-12-07 15:23:16,569 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_cb8a5c83-27db-4a8f-b461-fc2f8109aedb/bin/uautomizer/data/f1223200f/ca62c8dabcca495ea16b44d88a19cc0d [2019-12-07 15:23:16,572 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 15:23:16,573 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 15:23:16,574 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 15:23:16,574 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 15:23:16,577 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 15:23:16,578 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 03:23:16" (1/1) ... [2019-12-07 15:23:16,581 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45c8495d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:23:16, skipping insertion in model container [2019-12-07 15:23:16,581 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 03:23:16" (1/1) ... [2019-12-07 15:23:16,587 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 15:23:16,600 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 15:23:16,711 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 15:23:16,755 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 15:23:16,771 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 15:23:16,785 INFO L208 MainTranslator]: Completed translation [2019-12-07 15:23:16,786 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:23:16 WrapperNode [2019-12-07 15:23:16,786 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 15:23:16,786 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 15:23:16,787 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 15:23:16,787 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 15:23:16,794 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:23:16" (1/1) ... [2019-12-07 15:23:16,801 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:23:16" (1/1) ... [2019-12-07 15:23:16,815 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 15:23:16,815 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 15:23:16,815 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 15:23:16,815 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 15:23:16,822 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:23:16" (1/1) ... [2019-12-07 15:23:16,822 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:23:16" (1/1) ... [2019-12-07 15:23:16,824 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:23:16" (1/1) ... [2019-12-07 15:23:16,824 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:23:16" (1/1) ... [2019-12-07 15:23:16,828 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:23:16" (1/1) ... [2019-12-07 15:23:16,831 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:23:16" (1/1) ... [2019-12-07 15:23:16,832 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:23:16" (1/1) ... [2019-12-07 15:23:16,834 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 15:23:16,834 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 15:23:16,835 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 15:23:16,835 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 15:23:16,835 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:23:16" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cb8a5c83-27db-4a8f-b461-fc2f8109aedb/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 [2019-12-07 15:23:16,875 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-07 15:23:16,875 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 15:23:16,875 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 15:23:16,875 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-12-07 15:23:16,875 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-07 15:23:17,026 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 15:23:17,027 INFO L287 CfgBuilder]: Removed 13 assume(true) statements. [2019-12-07 15:23:17,027 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 03:23:17 BoogieIcfgContainer [2019-12-07 15:23:17,027 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 15:23:17,028 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 15:23:17,028 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 15:23:17,030 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 15:23:17,030 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 03:23:16" (1/3) ... [2019-12-07 15:23:17,031 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53a86de3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 03:23:17, skipping insertion in model container [2019-12-07 15:23:17,031 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:23:16" (2/3) ... [2019-12-07 15:23:17,031 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53a86de3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 03:23:17, skipping insertion in model container [2019-12-07 15:23:17,031 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 03:23:17" (3/3) ... [2019-12-07 15:23:17,032 INFO L109 eAbstractionObserver]: Analyzing ICFG test23-2.c [2019-12-07 15:23:17,038 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 15:23:17,042 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-07 15:23:17,049 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-12-07 15:23:17,063 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 15:23:17,064 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 15:23:17,064 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 15:23:17,064 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 15:23:17,064 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 15:23:17,064 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 15:23:17,064 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 15:23:17,064 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 15:23:17,074 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2019-12-07 15:23:17,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-12-07 15:23:17,078 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:23:17,080 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 15:23:17,080 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 15:23:17,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:23:17,084 INFO L82 PathProgramCache]: Analyzing trace with hash 2100293056, now seen corresponding path program 1 times [2019-12-07 15:23:17,090 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:23:17,090 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202173589] [2019-12-07 15:23:17,090 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:23:17,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:23:17,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:23:17,194 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202173589] [2019-12-07 15:23:17,194 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 15:23:17,194 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 15:23:17,195 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127162134] [2019-12-07 15:23:17,197 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-12-07 15:23:17,198 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 15:23:17,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-12-07 15:23:17,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-07 15:23:17,207 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 2 states. [2019-12-07 15:23:17,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:23:17,218 INFO L93 Difference]: Finished difference Result 30 states and 35 transitions. [2019-12-07 15:23:17,218 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-12-07 15:23:17,219 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 15 [2019-12-07 15:23:17,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:23:17,225 INFO L225 Difference]: With dead ends: 30 [2019-12-07 15:23:17,225 INFO L226 Difference]: Without dead ends: 17 [2019-12-07 15:23:17,227 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 [2019-12-07 15:23:17,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2019-12-07 15:23:17,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2019-12-07 15:23:17,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-12-07 15:23:17,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2019-12-07 15:23:17,248 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 15 [2019-12-07 15:23:17,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:23:17,248 INFO L462 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2019-12-07 15:23:17,248 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-12-07 15:23:17,248 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2019-12-07 15:23:17,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-12-07 15:23:17,249 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:23:17,249 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 15:23:17,249 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 15:23:17,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:23:17,249 INFO L82 PathProgramCache]: Analyzing trace with hash 478567452, now seen corresponding path program 1 times [2019-12-07 15:23:17,250 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:23:17,250 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835793245] [2019-12-07 15:23:17,250 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:23:17,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:23:17,374 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: Undeclared function symbol (const Int) at de.uni_freiburg.informatik.ultimate.logic.NoopScript.term(NoopScript.java:478) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.term(WrapperScript.java:250) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.term(WrapperScript.java:250) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.SmtUtils.termWithLocalSimplification(SmtUtils.java:1315) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.SmtUtils.termWithLocalSimplification(SmtUtils.java:1196) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.TermTransferrer.convertApplicationTerm(TermTransferrer.java:182) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer$BuildApplicationTerm.walk(TermTransformer.java:339) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:115) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:106) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer.transform(TermTransformer.java:272) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.computePredicates(NestedInterpolantsBuilder.java:573) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:171) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsRecursive(InterpolatingTraceCheckCraig.java:300) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:202) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:107) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:79) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:242) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:166) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:463) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:419) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:139) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:332) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:126) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2019-12-07 15:23:17,378 INFO L168 Benchmark]: Toolchain (without parser) took 804.95 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 104.3 MB). Free memory was 939.8 MB in the beginning and 1.0 GB in the end (delta: -103.1 MB). Peak memory consumption was 1.2 MB. Max. memory is 11.5 GB. [2019-12-07 15:23:17,379 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.0 GB. Free memory is still 955.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 15:23:17,379 INFO L168 Benchmark]: CACSL2BoogieTranslator took 212.14 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 104.3 MB). Free memory was 939.8 MB in the beginning and 1.1 GB in the end (delta: -158.3 MB). Peak memory consumption was 23.1 MB. Max. memory is 11.5 GB. [2019-12-07 15:23:17,380 INFO L168 Benchmark]: Boogie Procedure Inliner took 28.61 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 15:23:17,380 INFO L168 Benchmark]: Boogie Preprocessor took 19.07 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. [2019-12-07 15:23:17,380 INFO L168 Benchmark]: RCFGBuilder took 193.03 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: 16.5 MB). Peak memory consumption was 16.5 MB. Max. memory is 11.5 GB. [2019-12-07 15:23:17,381 INFO L168 Benchmark]: TraceAbstraction took 348.77 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 33.3 MB). Peak memory consumption was 33.3 MB. Max. memory is 11.5 GB. [2019-12-07 15:23:17,383 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.0 GB. Free memory is still 955.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 212.14 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 104.3 MB). Free memory was 939.8 MB in the beginning and 1.1 GB in the end (delta: -158.3 MB). Peak memory consumption was 23.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 28.61 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 19.07 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. * RCFGBuilder took 193.03 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: 16.5 MB). Peak memory consumption was 16.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 348.77 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 33.3 MB). Peak memory consumption was 33.3 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: Undeclared function symbol (const Int) de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: Undeclared function symbol (const Int): de.uni_freiburg.informatik.ultimate.logic.NoopScript.term(NoopScript.java:478) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.25-f470102 [2019-12-07 15:23:18,832 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 15:23:18,833 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 15:23:18,841 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 15:23:18,842 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 15:23:18,842 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 15:23:18,843 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 15:23:18,845 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 15:23:18,846 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 15:23:18,847 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 15:23:18,847 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 15:23:18,848 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 15:23:18,848 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 15:23:18,849 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 15:23:18,850 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 15:23:18,851 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 15:23:18,851 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 15:23:18,852 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 15:23:18,854 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 15:23:18,855 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 15:23:18,856 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 15:23:18,857 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 15:23:18,858 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 15:23:18,858 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 15:23:18,860 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 15:23:18,861 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 15:23:18,861 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 15:23:18,861 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 15:23:18,862 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 15:23:18,862 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 15:23:18,862 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 15:23:18,863 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 15:23:18,863 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 15:23:18,864 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 15:23:18,865 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 15:23:18,865 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 15:23:18,865 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 15:23:18,865 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 15:23:18,866 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 15:23:18,866 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 15:23:18,867 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 15:23:18,867 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_cb8a5c83-27db-4a8f-b461-fc2f8109aedb/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-12-07 15:23:18,877 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 15:23:18,877 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 15:23:18,878 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 15:23:18,878 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 15:23:18,878 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 15:23:18,879 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 15:23:18,879 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 15:23:18,879 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 15:23:18,879 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 15:23:18,879 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 15:23:18,879 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 15:23:18,880 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 15:23:18,880 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-12-07 15:23:18,880 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-12-07 15:23:18,880 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 15:23:18,880 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 15:23:18,880 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 15:23:18,880 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 15:23:18,881 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 15:23:18,881 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 15:23:18,881 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 15:23:18,881 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 15:23:18,881 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 15:23:18,881 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 15:23:18,881 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 15:23:18,882 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 15:23:18,882 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-12-07 15:23:18,882 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-12-07 15:23:18,882 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 15:23:18,882 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 15:23:18,882 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 15:23:18,882 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_cb8a5c83-27db-4a8f-b461-fc2f8109aedb/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 -> 308e43cca528a064aecd41d099b341627e43bb71 [2019-12-07 15:23:19,046 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 15:23:19,056 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 15:23:19,059 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 15:23:19,060 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 15:23:19,060 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 15:23:19,061 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_cb8a5c83-27db-4a8f-b461-fc2f8109aedb/bin/uautomizer/../../sv-benchmarks/c/ldv-regression/test23-2.c [2019-12-07 15:23:19,107 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_cb8a5c83-27db-4a8f-b461-fc2f8109aedb/bin/uautomizer/data/8ce8743ae/a3c6576413064be7a511ae589a3e6542/FLAG64492d822 [2019-12-07 15:23:19,434 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 15:23:19,435 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_cb8a5c83-27db-4a8f-b461-fc2f8109aedb/sv-benchmarks/c/ldv-regression/test23-2.c [2019-12-07 15:23:19,440 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_cb8a5c83-27db-4a8f-b461-fc2f8109aedb/bin/uautomizer/data/8ce8743ae/a3c6576413064be7a511ae589a3e6542/FLAG64492d822 [2019-12-07 15:23:19,452 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_cb8a5c83-27db-4a8f-b461-fc2f8109aedb/bin/uautomizer/data/8ce8743ae/a3c6576413064be7a511ae589a3e6542 [2019-12-07 15:23:19,454 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 15:23:19,455 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 15:23:19,456 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 15:23:19,456 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 15:23:19,458 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 15:23:19,458 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 03:23:19" (1/1) ... [2019-12-07 15:23:19,460 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61f8af92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:23:19, skipping insertion in model container [2019-12-07 15:23:19,460 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 03:23:19" (1/1) ... [2019-12-07 15:23:19,465 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 15:23:19,477 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 15:23:19,589 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 15:23:19,598 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 15:23:19,611 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 15:23:19,659 INFO L208 MainTranslator]: Completed translation [2019-12-07 15:23:19,659 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:23:19 WrapperNode [2019-12-07 15:23:19,659 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 15:23:19,660 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 15:23:19,660 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 15:23:19,660 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 15:23:19,666 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:23:19" (1/1) ... [2019-12-07 15:23:19,673 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:23:19" (1/1) ... [2019-12-07 15:23:19,686 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 15:23:19,687 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 15:23:19,687 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 15:23:19,687 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 15:23:19,692 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:23:19" (1/1) ... [2019-12-07 15:23:19,693 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:23:19" (1/1) ... [2019-12-07 15:23:19,694 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:23:19" (1/1) ... [2019-12-07 15:23:19,695 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:23:19" (1/1) ... [2019-12-07 15:23:19,699 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:23:19" (1/1) ... [2019-12-07 15:23:19,702 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:23:19" (1/1) ... [2019-12-07 15:23:19,704 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:23:19" (1/1) ... [2019-12-07 15:23:19,705 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 15:23:19,706 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 15:23:19,706 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 15:23:19,706 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 15:23:19,706 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:23:19" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cb8a5c83-27db-4a8f-b461-fc2f8109aedb/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 [2019-12-07 15:23:19,753 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-12-07 15:23:19,753 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 15:23:19,753 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 15:23:19,753 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-07 15:23:19,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-12-07 15:23:19,933 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 15:23:19,934 INFO L287 CfgBuilder]: Removed 13 assume(true) statements. [2019-12-07 15:23:19,934 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 03:23:19 BoogieIcfgContainer [2019-12-07 15:23:19,935 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 15:23:19,935 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 15:23:19,935 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 15:23:19,937 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 15:23:19,937 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 03:23:19" (1/3) ... [2019-12-07 15:23:19,938 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f05718a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 03:23:19, skipping insertion in model container [2019-12-07 15:23:19,938 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:23:19" (2/3) ... [2019-12-07 15:23:19,938 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f05718a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 03:23:19, skipping insertion in model container [2019-12-07 15:23:19,938 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 03:23:19" (3/3) ... [2019-12-07 15:23:19,939 INFO L109 eAbstractionObserver]: Analyzing ICFG test23-2.c [2019-12-07 15:23:19,945 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 15:23:19,949 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-07 15:23:19,957 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-12-07 15:23:19,971 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 15:23:19,971 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 15:23:19,971 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 15:23:19,971 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 15:23:19,971 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 15:23:19,971 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 15:23:19,971 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 15:23:19,971 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 15:23:19,981 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2019-12-07 15:23:19,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-12-07 15:23:19,984 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:23:19,985 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 15:23:19,985 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 15:23:19,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:23:19,989 INFO L82 PathProgramCache]: Analyzing trace with hash 2100293056, now seen corresponding path program 1 times [2019-12-07 15:23:19,997 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-07 15:23:19,997 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [367552933] [2019-12-07 15:23:19,997 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cb8a5c83-27db-4a8f-b461-fc2f8109aedb/bin/uautomizer/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2019-12-07 15:23:20,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:23:20,062 INFO L264 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 1 conjunts are in the unsatisfiable core [2019-12-07 15:23:20,066 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:23:20,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:23:20,075 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 15:23:20,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:23:20,079 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [367552933] [2019-12-07 15:23:20,079 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 15:23:20,079 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-12-07 15:23:20,080 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296895397] [2019-12-07 15:23:20,083 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-12-07 15:23:20,083 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-12-07 15:23:20,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-12-07 15:23:20,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-07 15:23:20,092 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 2 states. [2019-12-07 15:23:20,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:23:20,104 INFO L93 Difference]: Finished difference Result 30 states and 35 transitions. [2019-12-07 15:23:20,104 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-12-07 15:23:20,105 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 15 [2019-12-07 15:23:20,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:23:20,113 INFO L225 Difference]: With dead ends: 30 [2019-12-07 15:23:20,113 INFO L226 Difference]: Without dead ends: 17 [2019-12-07 15:23:20,116 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-07 15:23:20,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2019-12-07 15:23:20,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2019-12-07 15:23:20,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-12-07 15:23:20,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2019-12-07 15:23:20,141 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 15 [2019-12-07 15:23:20,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:23:20,141 INFO L462 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2019-12-07 15:23:20,141 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-12-07 15:23:20,141 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2019-12-07 15:23:20,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-12-07 15:23:20,142 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:23:20,142 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 15:23:20,343 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-12-07 15:23:20,343 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 15:23:20,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:23:20,344 INFO L82 PathProgramCache]: Analyzing trace with hash 478567452, now seen corresponding path program 1 times [2019-12-07 15:23:20,345 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-07 15:23:20,346 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2079995349] [2019-12-07 15:23:20,346 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cb8a5c83-27db-4a8f-b461-fc2f8109aedb/bin/uautomizer/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2019-12-07 15:23:20,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:23:20,433 INFO L264 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 20 conjunts are in the unsatisfiable core [2019-12-07 15:23:20,435 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:23:20,563 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2019-12-07 15:23:20,563 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 15:23:20,577 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 15:23:20,578 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-12-07 15:23:20,578 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:27, output treesize:24 [2019-12-07 15:23:20,630 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2019-12-07 15:23:20,631 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 15:23:20,644 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 15:23:20,645 INFO L534 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-12-07 15:23:20,645 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:31, output treesize:16 [2019-12-07 15:23:20,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:23:20,698 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 15:23:20,765 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 46 [2019-12-07 15:23:20,766 INFO L534 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-12-07 15:23:20,815 INFO L614 ElimStorePlain]: treesize reduction 25, result has 56.9 percent of original size [2019-12-07 15:23:20,816 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 15:23:20,821 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2019-12-07 15:23:20,821 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:40, output treesize:33 [2019-12-07 15:23:20,822 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 15:23:20,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:23:20,862 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2079995349] [2019-12-07 15:23:20,863 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 15:23:20,863 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 12 [2019-12-07 15:23:20,863 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793939072] [2019-12-07 15:23:20,864 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-12-07 15:23:20,864 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-12-07 15:23:20,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-12-07 15:23:20,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2019-12-07 15:23:20,865 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand 12 states. [2019-12-07 15:23:22,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:23:22,220 INFO L93 Difference]: Finished difference Result 71 states and 81 transitions. [2019-12-07 15:23:22,221 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2019-12-07 15:23:22,221 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 16 [2019-12-07 15:23:22,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:23:22,222 INFO L225 Difference]: With dead ends: 71 [2019-12-07 15:23:22,222 INFO L226 Difference]: Without dead ends: 66 [2019-12-07 15:23:22,224 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=243, Invalid=813, Unknown=0, NotChecked=0, Total=1056 [2019-12-07 15:23:22,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2019-12-07 15:23:22,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 21. [2019-12-07 15:23:22,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-12-07 15:23:22,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2019-12-07 15:23:22,229 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 16 [2019-12-07 15:23:22,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:23:22,229 INFO L462 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2019-12-07 15:23:22,230 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-12-07 15:23:22,230 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2019-12-07 15:23:22,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-12-07 15:23:22,230 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:23:22,230 INFO L410 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 15:23:22,431 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-12-07 15:23:22,432 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 15:23:22,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:23:22,433 INFO L82 PathProgramCache]: Analyzing trace with hash -1495361690, now seen corresponding path program 1 times [2019-12-07 15:23:22,434 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-07 15:23:22,435 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [332572961] [2019-12-07 15:23:22,435 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cb8a5c83-27db-4a8f-b461-fc2f8109aedb/bin/uautomizer/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2019-12-07 15:23:22,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:23:22,539 INFO L264 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 24 conjunts are in the unsatisfiable core [2019-12-07 15:23:22,541 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:23:22,608 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2019-12-07 15:23:22,608 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 15:23:22,620 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 15:23:22,621 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-12-07 15:23:22,621 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:27, output treesize:24 [2019-12-07 15:23:22,813 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2019-12-07 15:23:22,814 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 15:23:22,825 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 15:23:22,826 INFO L534 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-12-07 15:23:22,826 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:31, output treesize:16 [2019-12-07 15:23:22,894 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:23:22,895 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 15:23:23,211 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 116 treesize of output 98 [2019-12-07 15:23:23,212 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 15:23:23,212 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 15:23:23,213 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 15:23:23,214 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 15:23:23,214 INFO L534 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-12-07 15:23:23,295 INFO L614 ElimStorePlain]: treesize reduction 69, result has 34.9 percent of original size [2019-12-07 15:23:23,295 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 15:23:23,300 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2019-12-07 15:23:23,300 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:64, output treesize:37 [2019-12-07 15:23:23,300 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 15:23:23,347 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:23:23,347 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [332572961] [2019-12-07 15:23:23,347 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 15:23:23,348 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 18 [2019-12-07 15:23:23,348 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298217912] [2019-12-07 15:23:23,348 INFO L442 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-12-07 15:23:23,348 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-12-07 15:23:23,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-12-07 15:23:23,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2019-12-07 15:23:23,349 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand 18 states. [2019-12-07 15:23:25,152 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 30 [2019-12-07 15:23:25,662 WARN L192 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 28 [2019-12-07 15:23:25,834 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 24 [2019-12-07 15:23:26,036 WARN L192 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 26 [2019-12-07 15:23:26,444 WARN L192 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 29 [2019-12-07 15:23:26,661 WARN L192 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 25 [2019-12-07 15:23:26,882 WARN L192 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 27 [2019-12-07 15:23:27,124 WARN L192 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 21 [2019-12-07 15:23:28,183 WARN L192 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 24 [2019-12-07 15:23:29,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:23:29,282 INFO L93 Difference]: Finished difference Result 103 states and 121 transitions. [2019-12-07 15:23:29,282 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2019-12-07 15:23:29,282 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 20 [2019-12-07 15:23:29,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:23:29,283 INFO L225 Difference]: With dead ends: 103 [2019-12-07 15:23:29,283 INFO L226 Difference]: Without dead ends: 98 [2019-12-07 15:23:29,286 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1533 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=1009, Invalid=3961, Unknown=0, NotChecked=0, Total=4970 [2019-12-07 15:23:29,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2019-12-07 15:23:29,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 29. [2019-12-07 15:23:29,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-12-07 15:23:29,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2019-12-07 15:23:29,291 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 20 [2019-12-07 15:23:29,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:23:29,291 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2019-12-07 15:23:29,291 INFO L463 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-12-07 15:23:29,291 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2019-12-07 15:23:29,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2019-12-07 15:23:29,292 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:23:29,292 INFO L410 BasicCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 15:23:29,492 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2019-12-07 15:23:29,493 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 15:23:29,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:23:29,494 INFO L82 PathProgramCache]: Analyzing trace with hash -597070086, now seen corresponding path program 2 times [2019-12-07 15:23:29,495 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-07 15:23:29,496 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1785396124] [2019-12-07 15:23:29,496 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cb8a5c83-27db-4a8f-b461-fc2f8109aedb/bin/uautomizer/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2019-12-07 15:23:29,593 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-12-07 15:23:29,593 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 15:23:29,598 INFO L264 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 28 conjunts are in the unsatisfiable core [2019-12-07 15:23:29,599 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:23:29,666 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2019-12-07 15:23:29,666 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 15:23:29,679 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 15:23:29,680 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-12-07 15:23:29,680 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:27, output treesize:24 [2019-12-07 15:23:30,084 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2019-12-07 15:23:30,085 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 15:23:30,094 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 15:23:30,095 INFO L534 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-12-07 15:23:30,095 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:31, output treesize:12 [2019-12-07 15:23:30,167 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:23:30,167 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 15:23:30,942 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 120 treesize of output 102 [2019-12-07 15:23:30,942 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 15:23:30,943 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 15:23:30,944 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 15:23:30,944 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 15:23:30,945 INFO L534 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-12-07 15:23:31,034 INFO L614 ElimStorePlain]: treesize reduction 73, result has 36.0 percent of original size [2019-12-07 15:23:31,035 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 15:23:31,038 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2019-12-07 15:23:31,038 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:72, output treesize:41 [2019-12-07 15:23:31,038 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 15:23:31,071 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:23:31,071 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1785396124] [2019-12-07 15:23:31,071 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 15:23:31,071 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 26 [2019-12-07 15:23:31,071 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312168993] [2019-12-07 15:23:31,072 INFO L442 AbstractCegarLoop]: Interpolant automaton has 26 states [2019-12-07 15:23:31,072 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-12-07 15:23:31,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2019-12-07 15:23:31,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=538, Unknown=0, NotChecked=0, Total=650 [2019-12-07 15:23:31,072 INFO L87 Difference]: Start difference. First operand 29 states and 31 transitions. Second operand 26 states. [2019-12-07 15:23:36,158 WARN L192 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 46 [2019-12-07 15:23:36,553 WARN L192 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 42 [2019-12-07 15:23:36,960 WARN L192 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 44 [2019-12-07 15:23:37,412 WARN L192 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 38 [2019-12-07 15:23:37,968 WARN L192 SmtUtils]: Spent 448.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 47 [2019-12-07 15:23:38,498 WARN L192 SmtUtils]: Spent 394.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 43 [2019-12-07 15:23:39,041 WARN L192 SmtUtils]: Spent 402.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 45 [2019-12-07 15:23:39,666 WARN L192 SmtUtils]: Spent 398.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 39 [2019-12-07 15:23:40,034 WARN L192 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 43 [2019-12-07 15:23:40,414 WARN L192 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 39 [2019-12-07 15:23:40,814 WARN L192 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 41 [2019-12-07 15:23:41,205 WARN L192 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 35 [2019-12-07 15:23:41,670 WARN L192 SmtUtils]: Spent 370.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 44 [2019-12-07 15:23:42,132 WARN L192 SmtUtils]: Spent 326.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 40 [2019-12-07 15:23:42,582 WARN L192 SmtUtils]: Spent 309.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 42 [2019-12-07 15:23:43,087 WARN L192 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 36 [2019-12-07 15:23:43,408 WARN L192 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 40 [2019-12-07 15:23:44,448 WARN L192 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 42 [2019-12-07 15:23:45,399 WARN L192 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2019-12-07 15:23:46,295 WARN L192 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 41 [2019-12-07 15:23:47,240 WARN L192 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 28 [2019-12-07 15:23:47,495 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 24 [2019-12-07 15:23:47,745 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 26 [2019-12-07 15:23:48,326 WARN L192 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 29 [2019-12-07 15:23:48,638 WARN L192 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 25 [2019-12-07 15:23:48,978 WARN L192 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 27 [2019-12-07 15:23:49,395 WARN L192 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 21 [2019-12-07 15:23:50,403 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 26 [2019-12-07 15:23:52,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:23:52,814 INFO L93 Difference]: Finished difference Result 187 states and 217 transitions. [2019-12-07 15:23:52,814 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2019-12-07 15:23:52,814 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 28 [2019-12-07 15:23:52,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:23:52,816 INFO L225 Difference]: With dead ends: 187 [2019-12-07 15:23:52,816 INFO L226 Difference]: Without dead ends: 182 [2019-12-07 15:23:52,821 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7441 ImplicationChecksByTransitivity, 21.7s TimeCoverageRelationStatistics Valid=3284, Invalid=17022, Unknown=0, NotChecked=0, Total=20306 [2019-12-07 15:23:52,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2019-12-07 15:23:52,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 45. [2019-12-07 15:23:52,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2019-12-07 15:23:52,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 48 transitions. [2019-12-07 15:23:52,830 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 48 transitions. Word has length 28 [2019-12-07 15:23:52,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:23:52,830 INFO L462 AbstractCegarLoop]: Abstraction has 45 states and 48 transitions. [2019-12-07 15:23:52,830 INFO L463 AbstractCegarLoop]: Interpolant automaton has 26 states. [2019-12-07 15:23:52,830 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 48 transitions. [2019-12-07 15:23:52,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2019-12-07 15:23:52,831 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:23:52,831 INFO L410 BasicCegarLoop]: trace histogram [11, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 15:23:53,032 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2019-12-07 15:23:53,033 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 15:23:53,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:23:53,034 INFO L82 PathProgramCache]: Analyzing trace with hash 415068814, now seen corresponding path program 3 times [2019-12-07 15:23:53,034 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-07 15:23:53,035 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1650494135] [2019-12-07 15:23:53,035 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cb8a5c83-27db-4a8f-b461-fc2f8109aedb/bin/uautomizer/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2019-12-07 15:23:53,131 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-12-07 15:23:53,131 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 15:23:53,134 WARN L262 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 32 conjunts are in the unsatisfiable core [2019-12-07 15:23:53,137 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:23:53,215 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2019-12-07 15:23:53,215 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 15:23:53,235 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 15:23:53,236 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-12-07 15:23:53,236 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:37, output treesize:33 [2019-12-07 15:23:53,509 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 15:23:53,574 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 19 proven. 10 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2019-12-07 15:23:53,574 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 15:23:54,164 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1650494135] [2019-12-07 15:23:54,164 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: incompatible size [2019-12-07 15:23:54,164 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1697466642] [2019-12-07 15:23:54,164 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cb8a5c83-27db-4a8f-b461-fc2f8109aedb/bin/uautomizer/cvc4 Starting monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-12-07 15:23:54,280 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-12-07 15:23:54,280 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 15:23:54,282 WARN L262 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 36 conjunts are in the unsatisfiable core [2019-12-07 15:23:54,282 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.IncrementalPlicationChecker@27187e23 [2019-12-07 15:23:54,282 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [598244226] [2019-12-07 15:23:54,283 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cb8a5c83-27db-4a8f-b461-fc2f8109aedb/bin/uautomizer/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 15:23:54,351 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-12-07 15:23:54,351 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 15:23:54,353 WARN L262 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 35 conjunts are in the unsatisfiable core [2019-12-07 15:23:54,355 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:23:54,357 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.IncrementalPlicationChecker@27187e23 [2019-12-07 15:23:54,357 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2019-12-07 15:23:54,357 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2019-12-07 15:23:54,358 ERROR L206 FreeRefinementEngine]: Strategy WOLF failed to provide any proof altough trace is infeasible [2019-12-07 15:23:54,358 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-12-07 15:23:54,962 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 cvc4 --incremental --print-success --lang smt --rewrite-divk,6 mathsat -unsat_core_generation=3,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 15:23:54,983 WARN L229 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2019-12-07 15:23:54,983 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 03:23:54 BoogieIcfgContainer [2019-12-07 15:23:54,983 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 15:23:54,984 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 15:23:54,984 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 15:23:54,984 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 15:23:54,984 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 03:23:19" (3/4) ... [2019-12-07 15:23:54,987 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-12-07 15:23:54,987 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 15:23:54,988 INFO L168 Benchmark]: Toolchain (without parser) took 35533.11 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 313.5 MB). Free memory was 951.0 MB in the beginning and 929.5 MB in the end (delta: 21.5 MB). Peak memory consumption was 335.0 MB. Max. memory is 11.5 GB. [2019-12-07 15:23:54,988 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 981.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 15:23:54,989 INFO L168 Benchmark]: CACSL2BoogieTranslator took 204.10 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 120.6 MB). Free memory was 951.0 MB in the beginning and 1.1 GB in the end (delta: -164.5 MB). Peak memory consumption was 20.9 MB. Max. memory is 11.5 GB. [2019-12-07 15:23:54,989 INFO L168 Benchmark]: Boogie Procedure Inliner took 26.55 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 15:23:54,989 INFO L168 Benchmark]: Boogie Preprocessor took 18.67 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: 7.2 MB). Peak memory consumption was 7.2 MB. Max. memory is 11.5 GB. [2019-12-07 15:23:54,990 INFO L168 Benchmark]: RCFGBuilder took 229.00 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: 19.3 MB). Peak memory consumption was 19.3 MB. Max. memory is 11.5 GB. [2019-12-07 15:23:54,991 INFO L168 Benchmark]: TraceAbstraction took 35048.16 ms. Allocated memory was 1.1 GB in the beginning and 1.3 GB in the end (delta: 192.9 MB). Free memory was 1.1 GB in the beginning and 929.5 MB in the end (delta: 159.5 MB). Peak memory consumption was 352.4 MB. Max. memory is 11.5 GB. [2019-12-07 15:23:54,991 INFO L168 Benchmark]: Witness Printer took 3.36 ms. Allocated memory is still 1.3 GB. Free memory is still 929.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 15:23:54,994 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 981.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 204.10 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 120.6 MB). Free memory was 951.0 MB in the beginning and 1.1 GB in the end (delta: -164.5 MB). Peak memory consumption was 20.9 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 26.55 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 18.67 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: 7.2 MB). Peak memory consumption was 7.2 MB. Max. memory is 11.5 GB. * RCFGBuilder took 229.00 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: 19.3 MB). Peak memory consumption was 19.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 35048.16 ms. Allocated memory was 1.1 GB in the beginning and 1.3 GB in the end (delta: 192.9 MB). Free memory was 1.1 GB in the beginning and 929.5 MB in the end (delta: 159.5 MB). Peak memory consumption was 352.4 MB. Max. memory is 11.5 GB. * Witness Printer took 3.36 ms. Allocated memory is still 1.3 GB. Free memory is still 929.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 50]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L10] struct dummy d1, d2; [L14] d1.a = __VERIFIER_nondet_int() [L15] d1.b = __VERIFIER_nondet_int() [L17] d2.a = __VERIFIER_nondet_int() [L18] d2.b = __VERIFIER_nondet_int() [L23] EXPR __VERIFIER_nondet_bool() ? &d1 : &d2 [L23] return (__VERIFIER_nondet_bool() ? &d1 : &d2); [L34] struct dummy *pd1 = get_dummy(), *pd2 = get_dummy(); [L23] EXPR __VERIFIER_nondet_bool() ? &d1 : &d2 [L23] return (__VERIFIER_nondet_bool() ? &d1 : &d2); [L34] struct dummy *pd1 = get_dummy(), *pd2 = get_dummy(); [L35] int i = __VERIFIER_nondet_int(); [L36] COND TRUE pd1 != 0 && pd1 == pd2 && i >= 0 && i < 10 [L37] pd2->array[i] = i [L38] int *pa = &pd1->array[i]; [L39] EXPR pd2->array[i] [L39] i = pd2->array[i] - 10 [L40] EXPR \read(*pa) [L40] COND TRUE i < *pa [L41] ++i [L40] EXPR \read(*pa) [L40] COND TRUE i < *pa [L41] ++i [L40] EXPR \read(*pa) [L40] COND TRUE i < *pa [L41] ++i [L40] EXPR \read(*pa) [L40] COND TRUE i < *pa [L41] ++i [L40] EXPR \read(*pa) [L40] COND TRUE i < *pa [L41] ++i [L40] EXPR \read(*pa) [L40] COND TRUE i < *pa [L41] ++i [L40] EXPR \read(*pa) [L40] COND TRUE i < *pa [L41] ++i [L40] EXPR \read(*pa) [L40] COND TRUE i < *pa [L41] ++i [L40] EXPR \read(*pa) [L40] COND TRUE i < *pa [L41] ++i [L40] EXPR \read(*pa) [L40] COND TRUE i < *pa [L41] ++i [L40] EXPR \read(*pa) [L40] COND FALSE !(i < *pa) [L28] EXPR s1->array[i] [L28] return s1->array[i] == i; [L43] COND TRUE !check(pd2, i) [L50] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 21 locations, 1 error locations. Result: UNKNOWN, OverallTime: 34.9s, OverallIterations: 5, TraceHistogramMax: 11, AutomataDifference: 29.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 53 SDtfs, 657 SDslu, 257 SDs, 0 SdLazy, 693 SolverSat, 367 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 341 GetRequests, 97 SyntacticMatches, 3 SemanticMatches, 241 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9189 ImplicationChecksByTransitivity, 29.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=45occurred 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, 251 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.7s InterpolantComputationTime, 79 NumberOfCodeBlocks, 79 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 150 ConstructedInterpolants, 0 QuantifiedInterpolants, 26866 SizeOfPredicates, 42 NumberOfNonLiveVariables, 239 ConjunctsInSsa, 73 ConjunctsInUnsatCore, 8 InterpolantComputations, 4 PerfectInterpolantSequences, 0/96 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 could not prove your program: unable to determine feasibility of some traces Received shutdown request...