./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench/freire2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_2e3bdf10-007e-4e20-9638-9136ab0e79a0/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_2e3bdf10-007e-4e20-9638-9136ab0e79a0/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_2e3bdf10-007e-4e20-9638-9136ab0e79a0/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_2e3bdf10-007e-4e20-9638-9136ab0e79a0/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench/freire2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_2e3bdf10-007e-4e20-9638-9136ab0e79a0/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_2e3bdf10-007e-4e20-9638-9136ab0e79a0/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 30689778d55a79f9fe352193122f8e3d18bcc1bb .................................................................................................................................................................................................................................... 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_2e3bdf10-007e-4e20-9638-9136ab0e79a0/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_2e3bdf10-007e-4e20-9638-9136ab0e79a0/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_2e3bdf10-007e-4e20-9638-9136ab0e79a0/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_2e3bdf10-007e-4e20-9638-9136ab0e79a0/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench/freire2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_2e3bdf10-007e-4e20-9638-9136ab0e79a0/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_2e3bdf10-007e-4e20-9638-9136ab0e79a0/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 30689778d55a79f9fe352193122f8e3d18bcc1bb .................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-11-15 23:37:20,539 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-15 23:37:20,541 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-15 23:37:20,555 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-15 23:37:20,555 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-15 23:37:20,556 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-15 23:37:20,558 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-15 23:37:20,560 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-15 23:37:20,562 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-15 23:37:20,562 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-15 23:37:20,563 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-15 23:37:20,564 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-15 23:37:20,565 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-15 23:37:20,566 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-15 23:37:20,567 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-15 23:37:20,568 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-15 23:37:20,568 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-15 23:37:20,569 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-15 23:37:20,571 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-15 23:37:20,573 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-15 23:37:20,575 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-15 23:37:20,576 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-15 23:37:20,577 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-15 23:37:20,577 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-15 23:37:20,580 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-15 23:37:20,580 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-15 23:37:20,580 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-15 23:37:20,581 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-15 23:37:20,582 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-15 23:37:20,583 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-15 23:37:20,583 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-15 23:37:20,583 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-15 23:37:20,584 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-15 23:37:20,584 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-15 23:37:20,585 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-15 23:37:20,585 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-15 23:37:20,585 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-15 23:37:20,585 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-15 23:37:20,586 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-15 23:37:20,586 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-15 23:37:20,587 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-15 23:37:20,588 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_2e3bdf10-007e-4e20-9638-9136ab0e79a0/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-15 23:37:20,610 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-15 23:37:20,610 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-15 23:37:20,611 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-15 23:37:20,611 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-15 23:37:20,612 INFO L138 SettingsManager]: * Use SBE=true [2019-11-15 23:37:20,612 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-15 23:37:20,612 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-15 23:37:20,612 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-15 23:37:20,612 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-15 23:37:20,613 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-15 23:37:20,613 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-15 23:37:20,613 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-15 23:37:20,613 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-15 23:37:20,614 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-15 23:37:20,614 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-15 23:37:20,614 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-15 23:37:20,614 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-15 23:37:20,615 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-15 23:37:20,615 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-15 23:37:20,615 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-15 23:37:20,615 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-15 23:37:20,615 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-15 23:37:20,616 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-15 23:37:20,616 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-15 23:37:20,616 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-15 23:37:20,616 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-15 23:37:20,617 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-15 23:37:20,617 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-15 23:37:20,617 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_2e3bdf10-007e-4e20-9638-9136ab0e79a0/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 -> 30689778d55a79f9fe352193122f8e3d18bcc1bb [2019-11-15 23:37:20,661 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-15 23:37:20,679 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-15 23:37:20,685 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-15 23:37:20,686 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-15 23:37:20,687 INFO L275 PluginConnector]: CDTParser initialized [2019-11-15 23:37:20,688 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_2e3bdf10-007e-4e20-9638-9136ab0e79a0/bin/uautomizer/../../sv-benchmarks/c/nla-digbench/freire2.c [2019-11-15 23:37:20,748 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_2e3bdf10-007e-4e20-9638-9136ab0e79a0/bin/uautomizer/data/99f378e3c/9f90b8aed0684eada676c4a80d912779/FLAGb832534a6 [2019-11-15 23:37:21,138 INFO L306 CDTParser]: Found 1 translation units. [2019-11-15 23:37:21,140 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_2e3bdf10-007e-4e20-9638-9136ab0e79a0/sv-benchmarks/c/nla-digbench/freire2.c [2019-11-15 23:37:21,146 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_2e3bdf10-007e-4e20-9638-9136ab0e79a0/bin/uautomizer/data/99f378e3c/9f90b8aed0684eada676c4a80d912779/FLAGb832534a6 [2019-11-15 23:37:21,500 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_2e3bdf10-007e-4e20-9638-9136ab0e79a0/bin/uautomizer/data/99f378e3c/9f90b8aed0684eada676c4a80d912779 [2019-11-15 23:37:21,502 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-15 23:37:21,503 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-15 23:37:21,504 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-15 23:37:21,504 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-15 23:37:21,507 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-15 23:37:21,508 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 11:37:21" (1/1) ... [2019-11-15 23:37:21,510 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63f00869 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:37:21, skipping insertion in model container [2019-11-15 23:37:21,510 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 11:37:21" (1/1) ... [2019-11-15 23:37:21,517 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-15 23:37:21,533 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-15 23:37:21,765 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 23:37:21,769 INFO L188 MainTranslator]: Completed pre-run [2019-11-15 23:37:21,792 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 23:37:21,811 INFO L192 MainTranslator]: Completed translation [2019-11-15 23:37:21,811 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:37:21 WrapperNode [2019-11-15 23:37:21,811 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-15 23:37:21,812 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-15 23:37:21,812 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-15 23:37:21,813 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-15 23:37:21,821 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:37:21" (1/1) ... [2019-11-15 23:37:21,826 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:37:21" (1/1) ... [2019-11-15 23:37:21,844 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-15 23:37:21,845 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-15 23:37:21,845 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-15 23:37:21,845 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-15 23:37:21,852 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:37:21" (1/1) ... [2019-11-15 23:37:21,852 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:37:21" (1/1) ... [2019-11-15 23:37:21,853 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:37:21" (1/1) ... [2019-11-15 23:37:21,854 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:37:21" (1/1) ... [2019-11-15 23:37:21,858 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:37:21" (1/1) ... [2019-11-15 23:37:21,863 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:37:21" (1/1) ... [2019-11-15 23:37:21,865 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:37:21" (1/1) ... [2019-11-15 23:37:21,867 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-15 23:37:21,869 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-15 23:37:21,869 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-15 23:37:21,870 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-15 23:37:21,871 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:37:21" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2e3bdf10-007e-4e20-9638-9136ab0e79a0/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-15 23:37:21,923 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-15 23:37:21,924 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-15 23:37:22,117 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-15 23:37:22,117 INFO L284 CfgBuilder]: Removed 17 assume(true) statements. [2019-11-15 23:37:22,118 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 11:37:22 BoogieIcfgContainer [2019-11-15 23:37:22,119 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-15 23:37:22,120 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-15 23:37:22,120 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-15 23:37:22,122 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-15 23:37:22,123 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.11 11:37:21" (1/3) ... [2019-11-15 23:37:22,123 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e75796a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 11:37:22, skipping insertion in model container [2019-11-15 23:37:22,124 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:37:21" (2/3) ... [2019-11-15 23:37:22,124 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e75796a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 11:37:22, skipping insertion in model container [2019-11-15 23:37:22,124 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 11:37:22" (3/3) ... [2019-11-15 23:37:22,127 INFO L109 eAbstractionObserver]: Analyzing ICFG freire2.c [2019-11-15 23:37:22,136 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-15 23:37:22,142 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2019-11-15 23:37:22,152 INFO L249 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2019-11-15 23:37:22,179 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-15 23:37:22,180 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-15 23:37:22,189 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-15 23:37:22,189 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-15 23:37:22,189 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-15 23:37:22,189 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-15 23:37:22,189 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-15 23:37:22,189 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-15 23:37:22,213 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2019-11-15 23:37:22,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-11-15 23:37:22,220 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:37:22,221 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-11-15 23:37:22,222 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:37:22,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:37:22,230 INFO L82 PathProgramCache]: Analyzing trace with hash 963340, now seen corresponding path program 1 times [2019-11-15 23:37:22,238 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:37:22,238 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407223971] [2019-11-15 23:37:22,239 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:37:22,239 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:37:22,239 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:37:22,297 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-15 23:37:22,297 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2090154599] [2019-11-15 23:37:22,298 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2e3bdf10-007e-4e20-9638-9136ab0e79a0/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 23:37:22,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:37:22,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:37:22,355 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 23:37:22,355 INFO L445 BasicCegarLoop]: Counterexample might be feasible [2019-11-15 23:37:22,556 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 23:37:22,572 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.11 11:37:22 BoogieIcfgContainer [2019-11-15 23:37:22,572 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-15 23:37:22,572 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-15 23:37:22,572 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-15 23:37:22,573 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-15 23:37:22,573 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 11:37:22" (3/4) ... [2019-11-15 23:37:22,577 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-15 23:37:22,577 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-15 23:37:22,579 INFO L168 Benchmark]: Toolchain (without parser) took 1075.12 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.7 MB). Free memory was 947.3 MB in the beginning and 1.1 GB in the end (delta: -134.2 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 23:37:22,579 INFO L168 Benchmark]: CDTParser took 0.52 ms. Allocated memory is still 1.0 GB. Free memory is still 966.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 23:37:22,580 INFO L168 Benchmark]: CACSL2BoogieTranslator took 308.28 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.7 MB). Free memory was 947.3 MB in the beginning and 1.1 GB in the end (delta: -179.6 MB). Peak memory consumption was 18.9 MB. Max. memory is 11.5 GB. [2019-11-15 23:37:22,581 INFO L168 Benchmark]: Boogie Procedure Inliner took 32.37 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. [2019-11-15 23:37:22,582 INFO L168 Benchmark]: Boogie Preprocessor took 22.55 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. [2019-11-15 23:37:22,582 INFO L168 Benchmark]: RCFGBuilder took 249.75 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.6 MB). Peak memory consumption was 19.6 MB. Max. memory is 11.5 GB. [2019-11-15 23:37:22,583 INFO L168 Benchmark]: TraceAbstraction took 452.48 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 20.7 MB). Peak memory consumption was 20.7 MB. Max. memory is 11.5 GB. [2019-11-15 23:37:22,584 INFO L168 Benchmark]: Witness Printer took 4.52 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. [2019-11-15 23:37:22,593 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.52 ms. Allocated memory is still 1.0 GB. Free memory is still 966.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 308.28 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.7 MB). Free memory was 947.3 MB in the beginning and 1.1 GB in the end (delta: -179.6 MB). Peak memory consumption was 18.9 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 32.37 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 22.55 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 249.75 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.6 MB). Peak memory consumption was 19.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 452.48 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 20.7 MB). Peak memory consumption was 20.7 MB. Max. memory is 11.5 GB. * Witness Printer took 4.52 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 14]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of to_int at line 28. Possible FailurePath: [L20] int r; [L21] double a, x, s; [L22] a = __VERIFIER_nondet_double() [L23] x = a [L24] s = 3.25 [L25] r = 1 [L27] COND TRUE 1 [L12] COND TRUE !(cond) [L14] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 30 locations, 6 error locations. Result: UNSAFE, OverallTime: 0.3s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.24-cad4683 [2019-11-15 23:37:24,893 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-15 23:37:24,894 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-15 23:37:24,911 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-15 23:37:24,911 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-15 23:37:24,912 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-15 23:37:24,914 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-15 23:37:24,923 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-15 23:37:24,927 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-15 23:37:24,931 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-15 23:37:24,932 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-15 23:37:24,934 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-15 23:37:24,934 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-15 23:37:24,936 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-15 23:37:24,937 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-15 23:37:24,938 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-15 23:37:24,939 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-15 23:37:24,941 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-15 23:37:24,943 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-15 23:37:24,947 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-15 23:37:24,950 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-15 23:37:24,952 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-15 23:37:24,954 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-15 23:37:24,956 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-15 23:37:24,958 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-15 23:37:24,959 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-15 23:37:24,959 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-15 23:37:24,960 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-15 23:37:24,961 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-15 23:37:24,962 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-15 23:37:24,962 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-15 23:37:24,962 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-15 23:37:24,963 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-15 23:37:24,964 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-15 23:37:24,965 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-15 23:37:24,965 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-15 23:37:24,966 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-15 23:37:24,966 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-15 23:37:24,966 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-15 23:37:24,967 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-15 23:37:24,968 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-15 23:37:24,969 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_2e3bdf10-007e-4e20-9638-9136ab0e79a0/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-11-15 23:37:24,995 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-15 23:37:25,004 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-15 23:37:25,006 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-15 23:37:25,006 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-15 23:37:25,006 INFO L138 SettingsManager]: * Use SBE=true [2019-11-15 23:37:25,006 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-15 23:37:25,007 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-15 23:37:25,007 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-15 23:37:25,007 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-15 23:37:25,007 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-15 23:37:25,007 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-15 23:37:25,008 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-15 23:37:25,008 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-15 23:37:25,008 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-15 23:37:25,009 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-15 23:37:25,009 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-15 23:37:25,009 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-15 23:37:25,010 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-15 23:37:25,010 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-15 23:37:25,010 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-15 23:37:25,010 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-15 23:37:25,010 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-15 23:37:25,011 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-15 23:37:25,011 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-15 23:37:25,011 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-15 23:37:25,011 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-15 23:37:25,012 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-15 23:37:25,012 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-15 23:37:25,013 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-15 23:37:25,013 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-15 23:37:25,013 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_2e3bdf10-007e-4e20-9638-9136ab0e79a0/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 -> 30689778d55a79f9fe352193122f8e3d18bcc1bb [2019-11-15 23:37:25,051 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-15 23:37:25,061 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-15 23:37:25,064 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-15 23:37:25,066 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-15 23:37:25,066 INFO L275 PluginConnector]: CDTParser initialized [2019-11-15 23:37:25,067 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_2e3bdf10-007e-4e20-9638-9136ab0e79a0/bin/uautomizer/../../sv-benchmarks/c/nla-digbench/freire2.c [2019-11-15 23:37:25,122 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_2e3bdf10-007e-4e20-9638-9136ab0e79a0/bin/uautomizer/data/c48ea33da/cd48202f46254e73be9f461be118442e/FLAG3c1aa450e [2019-11-15 23:37:25,488 INFO L306 CDTParser]: Found 1 translation units. [2019-11-15 23:37:25,489 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_2e3bdf10-007e-4e20-9638-9136ab0e79a0/sv-benchmarks/c/nla-digbench/freire2.c [2019-11-15 23:37:25,493 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_2e3bdf10-007e-4e20-9638-9136ab0e79a0/bin/uautomizer/data/c48ea33da/cd48202f46254e73be9f461be118442e/FLAG3c1aa450e [2019-11-15 23:37:25,882 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_2e3bdf10-007e-4e20-9638-9136ab0e79a0/bin/uautomizer/data/c48ea33da/cd48202f46254e73be9f461be118442e [2019-11-15 23:37:25,885 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-15 23:37:25,885 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-15 23:37:25,886 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-15 23:37:25,886 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-15 23:37:25,889 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-15 23:37:25,890 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 11:37:25" (1/1) ... [2019-11-15 23:37:25,892 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@282ef840 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:37:25, skipping insertion in model container [2019-11-15 23:37:25,893 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 11:37:25" (1/1) ... [2019-11-15 23:37:25,899 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-15 23:37:25,915 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-15 23:37:26,094 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 23:37:26,099 INFO L188 MainTranslator]: Completed pre-run [2019-11-15 23:37:26,123 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 23:37:26,137 INFO L192 MainTranslator]: Completed translation [2019-11-15 23:37:26,138 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:37:26 WrapperNode [2019-11-15 23:37:26,138 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-15 23:37:26,139 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-15 23:37:26,139 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-15 23:37:26,139 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-15 23:37:26,211 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:37:26" (1/1) ... [2019-11-15 23:37:26,226 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:37:26" (1/1) ... [2019-11-15 23:37:26,243 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-15 23:37:26,243 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-15 23:37:26,243 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-15 23:37:26,243 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-15 23:37:26,251 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:37:26" (1/1) ... [2019-11-15 23:37:26,251 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:37:26" (1/1) ... [2019-11-15 23:37:26,253 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:37:26" (1/1) ... [2019-11-15 23:37:26,254 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:37:26" (1/1) ... [2019-11-15 23:37:26,260 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:37:26" (1/1) ... [2019-11-15 23:37:26,265 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:37:26" (1/1) ... [2019-11-15 23:37:26,267 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:37:26" (1/1) ... [2019-11-15 23:37:26,269 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-15 23:37:26,270 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-15 23:37:26,270 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-15 23:37:26,270 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-15 23:37:26,271 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:37:26" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2e3bdf10-007e-4e20-9638-9136ab0e79a0/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-15 23:37:26,322 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-15 23:37:26,322 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-15 23:37:34,169 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-15 23:37:34,169 INFO L284 CfgBuilder]: Removed 17 assume(true) statements. [2019-11-15 23:37:34,170 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 11:37:34 BoogieIcfgContainer [2019-11-15 23:37:34,170 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-15 23:37:34,171 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-15 23:37:34,171 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-15 23:37:34,175 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-15 23:37:34,175 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.11 11:37:25" (1/3) ... [2019-11-15 23:37:34,176 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74f80dee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 11:37:34, skipping insertion in model container [2019-11-15 23:37:34,176 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:37:26" (2/3) ... [2019-11-15 23:37:34,177 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74f80dee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 11:37:34, skipping insertion in model container [2019-11-15 23:37:34,177 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 11:37:34" (3/3) ... [2019-11-15 23:37:34,178 INFO L109 eAbstractionObserver]: Analyzing ICFG freire2.c [2019-11-15 23:37:34,186 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-15 23:37:34,193 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2019-11-15 23:37:34,201 INFO L249 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2019-11-15 23:37:34,221 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-15 23:37:34,222 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-15 23:37:34,222 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-15 23:37:34,222 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-15 23:37:34,222 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-15 23:37:34,223 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-15 23:37:34,223 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-15 23:37:34,223 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-15 23:37:34,234 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2019-11-15 23:37:34,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-11-15 23:37:34,238 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:37:34,239 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-11-15 23:37:34,241 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:37:34,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:37:34,245 INFO L82 PathProgramCache]: Analyzing trace with hash 963340, now seen corresponding path program 1 times [2019-11-15 23:37:34,253 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-15 23:37:34,253 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1523760411] [2019-11-15 23:37:34,253 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2e3bdf10-007e-4e20-9638-9136ab0e79a0/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 [2019-11-15 23:37:34,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:37:34,400 WARN L254 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-15 23:37:34,404 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:37:34,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:37:34,488 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-15 23:37:37,285 WARN L191 SmtUtils]: Spent 1.18 s on a formula simplification that was a NOOP. DAG size: 16 [2019-11-15 23:37:37,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:37:37,288 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1523760411] [2019-11-15 23:37:37,289 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-15 23:37:37,289 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2019-11-15 23:37:37,290 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600902014] [2019-11-15 23:37:37,298 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-15 23:37:37,298 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-15 23:37:37,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-15 23:37:37,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-15 23:37:37,313 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 6 states. [2019-11-15 23:37:56,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:37:56,364 INFO L93 Difference]: Finished difference Result 66 states and 86 transitions. [2019-11-15 23:37:56,365 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-15 23:37:56,366 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 4 [2019-11-15 23:37:56,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:37:56,375 INFO L225 Difference]: With dead ends: 66 [2019-11-15 23:37:56,376 INFO L226 Difference]: Without dead ends: 33 [2019-11-15 23:37:56,378 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2019-11-15 23:37:56,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2019-11-15 23:37:56,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 28. [2019-11-15 23:37:56,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-11-15 23:37:56,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions. [2019-11-15 23:37:56,407 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 4 [2019-11-15 23:37:56,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:37:56,407 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 28 transitions. [2019-11-15 23:37:56,407 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-15 23:37:56,408 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions. [2019-11-15 23:37:56,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-15 23:37:56,408 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:37:56,408 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-11-15 23:37:56,609 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-11-15 23:37:56,610 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:37:56,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:37:56,610 INFO L82 PathProgramCache]: Analyzing trace with hash 925925231, now seen corresponding path program 1 times [2019-11-15 23:37:56,610 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-15 23:37:56,611 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1493196741] [2019-11-15 23:37:56,611 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2e3bdf10-007e-4e20-9638-9136ab0e79a0/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 [2019-11-15 23:37:57,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:37:57,615 INFO L256 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-15 23:37:57,615 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:37:58,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:37:58,754 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-15 23:38:10,722 WARN L191 SmtUtils]: Spent 3.47 s on a formula simplification that was a NOOP. DAG size: 23 [2019-11-15 23:38:10,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:38:10,725 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1493196741] [2019-11-15 23:38:10,725 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-15 23:38:10,725 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 6 [2019-11-15 23:38:10,726 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464789417] [2019-11-15 23:38:10,727 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-15 23:38:10,727 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-15 23:38:10,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-15 23:38:10,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-15 23:38:10,728 INFO L87 Difference]: Start difference. First operand 28 states and 28 transitions. Second operand 6 states. [2019-11-15 23:38:19,313 WARN L191 SmtUtils]: Spent 5.14 s on a formula simplification that was a NOOP. DAG size: 26 [2019-11-15 23:38:28,598 WARN L191 SmtUtils]: Spent 5.19 s on a formula simplification that was a NOOP. DAG size: 33 [2019-11-15 23:38:43,930 WARN L191 SmtUtils]: Spent 12.31 s on a formula simplification. DAG size of input: 34 DAG size of output: 31 [2019-11-15 23:39:22,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:39:22,523 INFO L93 Difference]: Finished difference Result 32 states and 33 transitions. [2019-11-15 23:39:22,523 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-15 23:39:22,524 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 6 [2019-11-15 23:39:22,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:39:22,525 INFO L225 Difference]: With dead ends: 32 [2019-11-15 23:39:22,525 INFO L226 Difference]: Without dead ends: 29 [2019-11-15 23:39:22,526 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 44.3s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2019-11-15 23:39:22,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-11-15 23:39:22,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 26. [2019-11-15 23:39:22,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-11-15 23:39:22,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2019-11-15 23:39:22,533 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 6 [2019-11-15 23:39:22,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:39:22,533 INFO L462 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2019-11-15 23:39:22,533 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-15 23:39:22,534 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2019-11-15 23:39:22,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-15 23:39:22,534 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:39:22,534 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 23:39:22,748 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-11-15 23:39:22,748 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:39:22,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:39:22,749 INFO L82 PathProgramCache]: Analyzing trace with hash 756072562, now seen corresponding path program 1 times [2019-11-15 23:39:22,749 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-15 23:39:22,749 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [269409837] [2019-11-15 23:39:22,750 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2e3bdf10-007e-4e20-9638-9136ab0e79a0/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 [2019-11-15 23:39:24,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:39:25,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:39:25,954 INFO L168 tionRefinementEngine]: Strategy WOLF found a feasible trace [2019-11-15 23:39:25,954 INFO L445 BasicCegarLoop]: Counterexample might be feasible [2019-11-15 23:39:26,155 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2019-11-15 23:39:26,170 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.11 11:39:26 BoogieIcfgContainer [2019-11-15 23:39:26,171 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-15 23:39:26,171 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-15 23:39:26,171 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-15 23:39:26,172 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-15 23:39:26,172 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 11:37:34" (3/4) ... [2019-11-15 23:39:26,174 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-15 23:39:26,217 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_2e3bdf10-007e-4e20-9638-9136ab0e79a0/bin/uautomizer/witness.graphml [2019-11-15 23:39:26,217 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-15 23:39:26,219 INFO L168 Benchmark]: Toolchain (without parser) took 120333.11 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 91.8 MB). Free memory was 949.7 MB in the beginning and 975.3 MB in the end (delta: -25.6 MB). Peak memory consumption was 66.1 MB. Max. memory is 11.5 GB. [2019-11-15 23:39:26,222 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 1.0 GB. Free memory is still 977.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 23:39:26,225 INFO L168 Benchmark]: CACSL2BoogieTranslator took 251.99 ms. Allocated memory is still 1.0 GB. Free memory was 949.7 MB in the beginning and 938.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-15 23:39:26,226 INFO L168 Benchmark]: Boogie Procedure Inliner took 104.05 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 91.8 MB). Free memory was 938.9 MB in the beginning and 1.1 GB in the end (delta: -141.0 MB). Peak memory consumption was 17.6 MB. Max. memory is 11.5 GB. [2019-11-15 23:39:26,226 INFO L168 Benchmark]: Boogie Preprocessor took 26.63 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. [2019-11-15 23:39:26,226 INFO L168 Benchmark]: RCFGBuilder took 7900.52 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: 20.2 MB). Peak memory consumption was 20.2 MB. Max. memory is 11.5 GB. [2019-11-15 23:39:26,227 INFO L168 Benchmark]: TraceAbstraction took 111999.76 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 982.2 MB in the end (delta: 77.5 MB). Peak memory consumption was 77.5 MB. Max. memory is 11.5 GB. [2019-11-15 23:39:26,227 INFO L168 Benchmark]: Witness Printer took 46.10 ms. Allocated memory is still 1.1 GB. Free memory was 982.2 MB in the beginning and 975.3 MB in the end (delta: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. [2019-11-15 23:39:26,231 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 1.0 GB. Free memory is still 977.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 251.99 ms. Allocated memory is still 1.0 GB. Free memory was 949.7 MB in the beginning and 938.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 104.05 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 91.8 MB). Free memory was 938.9 MB in the beginning and 1.1 GB in the end (delta: -141.0 MB). Peak memory consumption was 17.6 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 26.63 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. * RCFGBuilder took 7900.52 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: 20.2 MB). Peak memory consumption was 20.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 111999.76 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 982.2 MB in the end (delta: 77.5 MB). Peak memory consumption was 77.5 MB. Max. memory is 11.5 GB. * Witness Printer took 46.10 ms. Allocated memory is still 1.1 GB. Free memory was 982.2 MB in the beginning and 975.3 MB in the end (delta: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 14]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L20] int r; [L21] double a, x, s; [L22] a = __VERIFIER_nondet_double() [L23] x = a [L24] s = 3.25 [L25] r = 1 [L27] COND TRUE 1 [L12] COND FALSE !(!(cond)) [L12] COND FALSE !(!(cond)) [L12] COND TRUE !(cond) [L14] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 30 locations, 6 error locations. Result: UNSAFE, OverallTime: 111.9s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 90.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 41 SDtfs, 33 SDslu, 77 SDs, 0 SdLazy, 78 SolverSat, 23 SolverUnsat, 13 SolverUnknown, 0 SolverNotchecked, 56.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 47.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 8 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 2.5s SatisfiabilityAnalysisTime, 16.0s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 16 ConstructedInterpolants, 0 QuantifiedInterpolants, 819 SizeOfPredicates, 9 NumberOfNonLiveVariables, 23 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...