./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 a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_23b6a968-dfa3-4b3a-a58e-f450655ea3d5/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_23b6a968-dfa3-4b3a-a58e-f450655ea3d5/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_23b6a968-dfa3-4b3a-a58e-f450655ea3d5/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_23b6a968-dfa3-4b3a-a58e-f450655ea3d5/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench/freire2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_23b6a968-dfa3-4b3a-a58e-f450655ea3d5/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_23b6a968-dfa3-4b3a-a58e-f450655ea3d5/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 20d32d2c3ebf4b6346bc2a38a0b1f36e05f930cf ............................................................................................................................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_23b6a968-dfa3-4b3a-a58e-f450655ea3d5/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_23b6a968-dfa3-4b3a-a58e-f450655ea3d5/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_23b6a968-dfa3-4b3a-a58e-f450655ea3d5/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_23b6a968-dfa3-4b3a-a58e-f450655ea3d5/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench/freire2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_23b6a968-dfa3-4b3a-a58e-f450655ea3d5/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_23b6a968-dfa3-4b3a-a58e-f450655ea3d5/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 20d32d2c3ebf4b6346bc2a38a0b1f36e05f930cf ................................................................................................................................................................................................................................................................................................................................................. 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 0.2.0-a4ecdab [2020-11-29 18:46:19,660 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 18:46:19,662 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 18:46:19,707 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 18:46:19,707 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 18:46:19,709 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 18:46:19,738 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 18:46:19,740 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 18:46:19,746 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 18:46:19,748 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 18:46:19,749 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 18:46:19,750 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 18:46:19,751 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 18:46:19,752 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 18:46:19,754 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 18:46:19,755 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 18:46:19,756 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 18:46:19,757 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 18:46:19,767 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 18:46:19,774 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 18:46:19,776 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 18:46:19,783 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 18:46:19,784 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 18:46:19,785 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 18:46:19,789 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 18:46:19,789 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 18:46:19,790 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 18:46:19,791 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 18:46:19,791 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 18:46:19,792 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 18:46:19,793 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 18:46:19,794 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 18:46:19,794 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 18:46:19,795 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 18:46:19,796 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 18:46:19,797 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 18:46:19,798 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 18:46:19,798 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 18:46:19,799 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 18:46:19,800 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 18:46:19,800 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 18:46:19,802 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_23b6a968-dfa3-4b3a-a58e-f450655ea3d5/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-29 18:46:19,827 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 18:46:19,827 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 18:46:19,828 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 18:46:19,829 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 18:46:19,829 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 18:46:19,830 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 18:46:19,830 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 18:46:19,831 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 18:46:19,831 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 18:46:19,831 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 18:46:19,832 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 18:46:19,832 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 18:46:19,833 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 18:46:19,833 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 18:46:19,833 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 18:46:19,834 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 18:46:19,834 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 18:46:19,835 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 18:46:19,835 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 18:46:19,835 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 18:46:19,836 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 18:46:19,836 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 18:46:19,837 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 18:46:19,837 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 18:46:19,837 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 18:46:19,838 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 18:46:19,838 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 18:46:19,838 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 18:46:19,839 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 18:46:19,839 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_23b6a968-dfa3-4b3a-a58e-f450655ea3d5/bin/uautomizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_23b6a968-dfa3-4b3a-a58e-f450655ea3d5/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 20d32d2c3ebf4b6346bc2a38a0b1f36e05f930cf [2020-11-29 18:46:20,090 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 18:46:20,122 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 18:46:20,124 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 18:46:20,125 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 18:46:20,126 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 18:46:20,127 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_23b6a968-dfa3-4b3a-a58e-f450655ea3d5/bin/uautomizer/../../sv-benchmarks/c/nla-digbench/freire2.c [2020-11-29 18:46:20,201 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_23b6a968-dfa3-4b3a-a58e-f450655ea3d5/bin/uautomizer/data/d6d7d515e/990c518bff1945f9a7b5c36e548db8f0/FLAG04168c9d8 [2020-11-29 18:46:20,700 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 18:46:20,700 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_23b6a968-dfa3-4b3a-a58e-f450655ea3d5/sv-benchmarks/c/nla-digbench/freire2.c [2020-11-29 18:46:20,708 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_23b6a968-dfa3-4b3a-a58e-f450655ea3d5/bin/uautomizer/data/d6d7d515e/990c518bff1945f9a7b5c36e548db8f0/FLAG04168c9d8 [2020-11-29 18:46:21,108 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_23b6a968-dfa3-4b3a-a58e-f450655ea3d5/bin/uautomizer/data/d6d7d515e/990c518bff1945f9a7b5c36e548db8f0 [2020-11-29 18:46:21,111 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 18:46:21,112 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 18:46:21,126 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 18:46:21,126 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 18:46:21,130 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 18:46:21,130 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:46:21" (1/1) ... [2020-11-29 18:46:21,132 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6bfcc784 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:46:21, skipping insertion in model container [2020-11-29 18:46:21,133 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:46:21" (1/1) ... [2020-11-29 18:46:21,143 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 18:46:21,162 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 18:46:21,358 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 18:46:21,367 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 18:46:21,387 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 18:46:21,401 INFO L208 MainTranslator]: Completed translation [2020-11-29 18:46:21,401 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:46:21 WrapperNode [2020-11-29 18:46:21,402 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 18:46:21,403 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 18:46:21,403 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 18:46:21,403 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 18:46:21,411 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:46:21" (1/1) ... [2020-11-29 18:46:21,418 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:46:21" (1/1) ... [2020-11-29 18:46:21,439 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 18:46:21,440 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 18:46:21,440 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 18:46:21,440 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 18:46:21,448 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:46:21" (1/1) ... [2020-11-29 18:46:21,448 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:46:21" (1/1) ... [2020-11-29 18:46:21,450 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:46:21" (1/1) ... [2020-11-29 18:46:21,451 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:46:21" (1/1) ... [2020-11-29 18:46:21,457 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:46:21" (1/1) ... [2020-11-29 18:46:21,462 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:46:21" (1/1) ... [2020-11-29 18:46:21,463 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:46:21" (1/1) ... [2020-11-29 18:46:21,466 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 18:46:21,466 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 18:46:21,467 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 18:46:21,467 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 18:46:21,478 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:46:21" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_23b6a968-dfa3-4b3a-a58e-f450655ea3d5/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 18:46:21,545 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 18:46:21,545 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 18:46:21,545 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 18:46:21,545 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 18:46:21,840 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 18:46:21,840 INFO L298 CfgBuilder]: Removed 29 assume(true) statements. [2020-11-29 18:46:21,842 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:46:21 BoogieIcfgContainer [2020-11-29 18:46:21,842 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 18:46:21,858 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 18:46:21,858 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 18:46:21,872 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 18:46:21,873 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 06:46:21" (1/3) ... [2020-11-29 18:46:21,873 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52c77a1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 06:46:21, skipping insertion in model container [2020-11-29 18:46:21,874 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:46:21" (2/3) ... [2020-11-29 18:46:21,874 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52c77a1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 06:46:21, skipping insertion in model container [2020-11-29 18:46:21,874 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:46:21" (3/3) ... [2020-11-29 18:46:21,876 INFO L111 eAbstractionObserver]: Analyzing ICFG freire2.c [2020-11-29 18:46:21,884 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 18:46:21,887 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-11-29 18:46:21,899 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-11-29 18:46:21,935 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 18:46:21,936 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 18:46:21,936 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 18:46:21,936 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 18:46:21,936 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 18:46:21,936 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 18:46:21,937 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 18:46:21,937 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 18:46:21,956 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-11-29 18:46:21,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-29 18:46:21,962 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:46:21,962 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-11-29 18:46:21,964 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 18:46:21,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:46:21,972 INFO L82 PathProgramCache]: Analyzing trace with hash 28699754, now seen corresponding path program 1 times [2020-11-29 18:46:21,979 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:46:21,979 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685922181] [2020-11-29 18:46:21,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:46:22,059 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 18:46:22,059 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [629409612] [2020-11-29 18:46:22,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_23b6a968-dfa3-4b3a-a58e-f450655ea3d5/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 [2020-11-29 18:46:22,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:46:22,157 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:46:22,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:46:22,179 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:46:22,215 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 18:46:22,217 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-29 18:46:22,441 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2020-11-29 18:46:22,459 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 06:46:22 BoogieIcfgContainer [2020-11-29 18:46:22,460 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 18:46:22,460 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 18:46:22,461 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 18:46:22,461 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 18:46:22,461 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:46:21" (3/4) ... [2020-11-29 18:46:22,464 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-29 18:46:22,465 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 18:46:22,471 INFO L168 Benchmark]: Toolchain (without parser) took 1353.75 ms. Allocated memory was 86.0 MB in the beginning and 111.1 MB in the end (delta: 25.2 MB). Free memory was 56.2 MB in the beginning and 75.0 MB in the end (delta: -18.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 16.1 GB. [2020-11-29 18:46:22,472 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 86.0 MB. Free memory was 43.2 MB in the beginning and 43.1 MB in the end (delta: 40.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 18:46:22,474 INFO L168 Benchmark]: CACSL2BoogieTranslator took 275.77 ms. Allocated memory is still 86.0 MB. Free memory was 56.0 MB in the beginning and 63.2 MB in the end (delta: -7.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 18:46:22,475 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.59 ms. Allocated memory is still 86.0 MB. Free memory was 63.2 MB in the beginning and 61.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 18:46:22,475 INFO L168 Benchmark]: Boogie Preprocessor took 25.81 ms. Allocated memory is still 86.0 MB. Free memory was 61.6 MB in the beginning and 60.4 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 18:46:22,476 INFO L168 Benchmark]: RCFGBuilder took 376.20 ms. Allocated memory is still 86.0 MB. Free memory was 60.1 MB in the beginning and 46.6 MB in the end (delta: 13.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-29 18:46:22,477 INFO L168 Benchmark]: TraceAbstraction took 601.61 ms. Allocated memory was 86.0 MB in the beginning and 111.1 MB in the end (delta: 25.2 MB). Free memory was 46.1 MB in the beginning and 75.5 MB in the end (delta: -29.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 18:46:22,478 INFO L168 Benchmark]: Witness Printer took 4.55 ms. Allocated memory is still 111.1 MB. Free memory was 75.5 MB in the beginning and 75.0 MB in the end (delta: 493.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 18:46:22,487 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 86.0 MB. Free memory was 43.2 MB in the beginning and 43.1 MB in the end (delta: 40.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 275.77 ms. Allocated memory is still 86.0 MB. Free memory was 56.0 MB in the beginning and 63.2 MB in the end (delta: -7.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 36.59 ms. Allocated memory is still 86.0 MB. Free memory was 63.2 MB in the beginning and 61.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 25.81 ms. Allocated memory is still 86.0 MB. Free memory was 61.6 MB in the beginning and 60.4 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 376.20 ms. Allocated memory is still 86.0 MB. Free memory was 60.1 MB in the beginning and 46.6 MB in the end (delta: 13.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 601.61 ms. Allocated memory was 86.0 MB in the beginning and 111.1 MB in the end (delta: 25.2 MB). Free memory was 46.1 MB in the beginning and 75.5 MB in the end (delta: -29.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 4.55 ms. Allocated memory is still 111.1 MB. Free memory was 75.5 MB in the beginning and 75.0 MB in the end (delta: 493.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 10]: 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 33. Possible FailurePath: [L25] int r; [L26] double a, x, s; [L27] a = __VERIFIER_nondet_double() [L28] x = a [L29] s = 3.25 [L30] r = 1 [L32] COND TRUE 1 [L17] COND TRUE !(cond) [L10] __assert_fail("0", "freire2.c", 10, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 31 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.5s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31occurred 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, 5 NumberOfCodeBlocks, 5 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, ACCELERATED_INTERPOLATION: 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 0.2.0-a4ecdab [2020-11-29 18:46:24,949 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 18:46:24,951 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 18:46:24,988 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 18:46:24,988 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 18:46:24,990 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 18:46:24,991 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 18:46:24,994 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 18:46:24,996 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 18:46:24,997 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 18:46:24,998 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 18:46:25,000 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 18:46:25,000 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 18:46:25,001 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 18:46:25,003 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 18:46:25,004 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 18:46:25,005 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 18:46:25,006 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 18:46:25,009 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 18:46:25,011 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 18:46:25,013 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 18:46:25,022 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 18:46:25,023 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 18:46:25,024 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 18:46:25,028 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 18:46:25,028 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 18:46:25,029 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 18:46:25,035 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 18:46:25,035 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 18:46:25,036 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 18:46:25,037 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 18:46:25,038 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 18:46:25,039 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 18:46:25,039 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 18:46:25,041 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 18:46:25,041 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 18:46:25,042 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 18:46:25,042 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 18:46:25,042 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 18:46:25,044 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 18:46:25,044 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 18:46:25,049 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_23b6a968-dfa3-4b3a-a58e-f450655ea3d5/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-11-29 18:46:25,095 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 18:46:25,096 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 18:46:25,099 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 18:46:25,099 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 18:46:25,099 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 18:46:25,099 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 18:46:25,099 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 18:46:25,100 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 18:46:25,100 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 18:46:25,100 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 18:46:25,101 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 18:46:25,101 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 18:46:25,101 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-29 18:46:25,102 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-29 18:46:25,102 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 18:46:25,102 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 18:46:25,102 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 18:46:25,102 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 18:46:25,102 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 18:46:25,103 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 18:46:25,103 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 18:46:25,103 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 18:46:25,103 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 18:46:25,103 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 18:46:25,104 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 18:46:25,104 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 18:46:25,104 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-11-29 18:46:25,104 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-29 18:46:25,104 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 18:46:25,104 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 18:46:25,105 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-29 18:46:25,105 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_23b6a968-dfa3-4b3a-a58e-f450655ea3d5/bin/uautomizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_23b6a968-dfa3-4b3a-a58e-f450655ea3d5/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 20d32d2c3ebf4b6346bc2a38a0b1f36e05f930cf [2020-11-29 18:46:25,515 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 18:46:25,538 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 18:46:25,541 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 18:46:25,542 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 18:46:25,546 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 18:46:25,547 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_23b6a968-dfa3-4b3a-a58e-f450655ea3d5/bin/uautomizer/../../sv-benchmarks/c/nla-digbench/freire2.c [2020-11-29 18:46:25,622 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_23b6a968-dfa3-4b3a-a58e-f450655ea3d5/bin/uautomizer/data/9f567e4c2/410b56546adf4dedb6d90cf20264fb04/FLAGb0f4c93c2 [2020-11-29 18:46:26,101 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 18:46:26,102 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_23b6a968-dfa3-4b3a-a58e-f450655ea3d5/sv-benchmarks/c/nla-digbench/freire2.c [2020-11-29 18:46:26,108 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_23b6a968-dfa3-4b3a-a58e-f450655ea3d5/bin/uautomizer/data/9f567e4c2/410b56546adf4dedb6d90cf20264fb04/FLAGb0f4c93c2 [2020-11-29 18:46:26,491 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_23b6a968-dfa3-4b3a-a58e-f450655ea3d5/bin/uautomizer/data/9f567e4c2/410b56546adf4dedb6d90cf20264fb04 [2020-11-29 18:46:26,494 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 18:46:26,507 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 18:46:26,510 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 18:46:26,510 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 18:46:26,515 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 18:46:26,516 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:46:26" (1/1) ... [2020-11-29 18:46:26,519 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17d4421d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:46:26, skipping insertion in model container [2020-11-29 18:46:26,519 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:46:26" (1/1) ... [2020-11-29 18:46:26,530 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 18:46:26,550 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 18:46:26,727 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 18:46:26,740 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 18:46:26,764 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 18:46:26,779 INFO L208 MainTranslator]: Completed translation [2020-11-29 18:46:26,779 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:46:26 WrapperNode [2020-11-29 18:46:26,780 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 18:46:26,781 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 18:46:26,781 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 18:46:26,781 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 18:46:26,788 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:46:26" (1/1) ... [2020-11-29 18:46:26,797 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:46:26" (1/1) ... [2020-11-29 18:46:26,818 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 18:46:26,819 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 18:46:26,819 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 18:46:26,819 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 18:46:26,827 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:46:26" (1/1) ... [2020-11-29 18:46:26,827 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:46:26" (1/1) ... [2020-11-29 18:46:26,831 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:46:26" (1/1) ... [2020-11-29 18:46:26,831 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:46:26" (1/1) ... [2020-11-29 18:46:26,839 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:46:26" (1/1) ... [2020-11-29 18:46:26,843 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:46:26" (1/1) ... [2020-11-29 18:46:26,852 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:46:26" (1/1) ... [2020-11-29 18:46:26,855 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 18:46:26,856 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 18:46:26,856 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 18:46:26,856 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 18:46:26,857 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:46:26" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_23b6a968-dfa3-4b3a-a58e-f450655ea3d5/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 18:46:26,944 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-29 18:46:26,945 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 18:46:26,945 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 18:46:26,946 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 18:46:37,031 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 18:46:37,031 INFO L298 CfgBuilder]: Removed 29 assume(true) statements. [2020-11-29 18:46:37,033 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:46:37 BoogieIcfgContainer [2020-11-29 18:46:37,033 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 18:46:37,035 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 18:46:37,035 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 18:46:37,039 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 18:46:37,039 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 06:46:26" (1/3) ... [2020-11-29 18:46:37,040 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ed9d429 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 06:46:37, skipping insertion in model container [2020-11-29 18:46:37,041 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:46:26" (2/3) ... [2020-11-29 18:46:37,041 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ed9d429 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 06:46:37, skipping insertion in model container [2020-11-29 18:46:37,041 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:46:37" (3/3) ... [2020-11-29 18:46:37,043 INFO L111 eAbstractionObserver]: Analyzing ICFG freire2.c [2020-11-29 18:46:37,055 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 18:46:37,060 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-11-29 18:46:37,074 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-11-29 18:46:37,098 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 18:46:37,099 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 18:46:37,099 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 18:46:37,099 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 18:46:37,099 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 18:46:37,100 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 18:46:37,100 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 18:46:37,100 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 18:46:37,115 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-11-29 18:46:37,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-29 18:46:37,121 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:46:37,121 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-11-29 18:46:37,122 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 18:46:37,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:46:37,128 INFO L82 PathProgramCache]: Analyzing trace with hash 28699754, now seen corresponding path program 1 times [2020-11-29 18:46:37,149 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 18:46:37,150 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [880239801] [2020-11-29 18:46:37,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_23b6a968-dfa3-4b3a-a58e-f450655ea3d5/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 [2020-11-29 18:46:37,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:46:37,330 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-29 18:46:37,334 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:46:37,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:46:37,442 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 18:46:40,253 WARN L193 SmtUtils]: Spent 508.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2020-11-29 18:46:40,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:46:40,277 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [880239801] [2020-11-29 18:46:40,278 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 18:46:40,278 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2020-11-29 18:46:40,278 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384690850] [2020-11-29 18:46:40,283 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-29 18:46:40,283 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 18:46:40,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-29 18:46:40,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-11-29 18:46:40,299 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 7 states. [2020-11-29 18:46:57,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:46:57,975 INFO L93 Difference]: Finished difference Result 67 states and 87 transitions. [2020-11-29 18:46:57,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-29 18:46:57,977 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 5 [2020-11-29 18:46:57,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:46:57,987 INFO L225 Difference]: With dead ends: 67 [2020-11-29 18:46:57,988 INFO L226 Difference]: Without dead ends: 34 [2020-11-29 18:46:57,991 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-11-29 18:46:58,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-11-29 18:46:58,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 29. [2020-11-29 18:46:58,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-11-29 18:46:58,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2020-11-29 18:46:58,033 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 5 [2020-11-29 18:46:58,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:46:58,033 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2020-11-29 18:46:58,034 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-29 18:46:58,034 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2020-11-29 18:46:58,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-29 18:46:58,034 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:46:58,035 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:46:58,250 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-29 18:46:58,250 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 18:46:58,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:46:58,251 INFO L82 PathProgramCache]: Analyzing trace with hash 1810846125, now seen corresponding path program 1 times [2020-11-29 18:46:58,252 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 18:46:58,252 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [887214985] [2020-11-29 18:46:58,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_23b6a968-dfa3-4b3a-a58e-f450655ea3d5/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 [2020-11-29 18:46:59,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:46:59,537 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-29 18:46:59,539 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:47:00,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:47:00,963 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 18:47:19,889 WARN L193 SmtUtils]: Spent 2.40 s on a formula simplification that was a NOOP. DAG size: 22 [2020-11-29 18:47:30,802 WARN L193 SmtUtils]: Spent 1.21 s on a formula simplification that was a NOOP. DAG size: 11 [2020-11-29 18:47:30,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:47:30,804 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [887214985] [2020-11-29 18:47:30,804 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 18:47:30,804 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 8 [2020-11-29 18:47:30,805 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281122986] [2020-11-29 18:47:30,806 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-29 18:47:30,806 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 18:47:30,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-29 18:47:30,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=37, Unknown=5, NotChecked=0, Total=56 [2020-11-29 18:47:30,807 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand 8 states. [2020-11-29 18:47:44,762 WARN L193 SmtUtils]: Spent 3.81 s on a formula simplification that was a NOOP. DAG size: 14 [2020-11-29 18:47:49,498 WARN L860 $PredicateComparison]: unable to prove that (and (forall ((v_ULTIMATE.start_main_~a~0_11 (_ FloatingPoint 11 53))) (= ((_ fp.to_sbv 32) roundTowardZero (let ((.cse0 (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv4 32)) v_ULTIMATE.start_main_~a~0_11))) (fp.sub c_currentRoundingMode .cse0 .cse0))) (_ bv0 32))) (= (_ bv1 32) c_ULTIMATE.start_main_~r~0) (= c_ULTIMATE.start_main_~a~0 c_ULTIMATE.start_main_~x~0) (= (_ bv1 32) (bvadd (bvmul (_ bv3 32) c_ULTIMATE.start_main_~r~0) ((_ fp.to_sbv 32) roundTowardZero (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (_ bv4 32)))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse1 c_ULTIMATE.start_main_~x~0) (fp.mul c_currentRoundingMode .cse1 c_ULTIMATE.start_main_~a~0)))) (bvmul (_ bv4 32) (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) (bvneg (bvmul (bvmul c_ULTIMATE.start_main_~r~0 (_ bv6 32)) c_ULTIMATE.start_main_~r~0)))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2020-11-29 18:48:07,614 WARN L193 SmtUtils]: Spent 7.97 s on a formula simplification that was a NOOP. DAG size: 27 [2020-11-29 18:48:21,503 WARN L193 SmtUtils]: Spent 7.19 s on a formula simplification that was a NOOP. DAG size: 31 [2020-11-29 18:48:27,608 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32)))) (and (or (= (bvadd c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv4294967295 32)) (_ bv0 32)) .cse0) (not .cse0) (= (_ bv1 32) c_ULTIMATE.start_main_~r~0) (= c_ULTIMATE.start_main_~a~0 c_ULTIMATE.start_main_~x~0) (= (_ bv1 32) (bvadd (bvmul (_ bv3 32) c_ULTIMATE.start_main_~r~0) ((_ fp.to_sbv 32) roundTowardZero (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (_ bv4 32)))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse1 c_ULTIMATE.start_main_~x~0) (fp.mul c_currentRoundingMode .cse1 c_ULTIMATE.start_main_~a~0)))) (bvmul (_ bv4 32) (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) (bvneg (bvmul (bvmul c_ULTIMATE.start_main_~r~0 (_ bv6 32)) c_ULTIMATE.start_main_~r~0)))) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2020-11-29 18:49:33,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:49:33,783 INFO L93 Difference]: Finished difference Result 33 states and 34 transitions. [2020-11-29 18:49:33,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-29 18:49:33,790 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 7 [2020-11-29 18:49:33,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:49:33,791 INFO L225 Difference]: With dead ends: 33 [2020-11-29 18:49:33,791 INFO L226 Difference]: Without dead ends: 30 [2020-11-29 18:49:33,793 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 80.2s TimeCoverageRelationStatistics Valid=38, Invalid=90, Unknown=12, NotChecked=42, Total=182 [2020-11-29 18:49:33,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-11-29 18:49:33,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 27. [2020-11-29 18:49:33,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-11-29 18:49:33,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2020-11-29 18:49:33,803 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 7 [2020-11-29 18:49:33,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:49:33,803 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2020-11-29 18:49:33,803 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-29 18:49:33,803 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2020-11-29 18:49:33,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-29 18:49:33,804 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:49:33,804 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:49:34,014 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-29 18:49:34,014 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 18:49:34,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:49:34,016 INFO L82 PathProgramCache]: Analyzing trace with hash 761557936, now seen corresponding path program 1 times [2020-11-29 18:49:34,016 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 18:49:34,017 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1741201259] [2020-11-29 18:49:34,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_23b6a968-dfa3-4b3a-a58e-f450655ea3d5/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 [2020-11-29 18:49:35,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:49:35,905 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:51:05,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:51:05,408 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:51:05,951 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-11-29 18:51:05,952 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-29 18:51:06,152 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-29 18:51:06,180 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 06:51:06 BoogieIcfgContainer [2020-11-29 18:51:06,180 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 18:51:06,181 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 18:51:06,181 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 18:51:06,182 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 18:51:06,182 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:46:37" (3/4) ... [2020-11-29 18:51:06,184 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-29 18:51:06,249 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_23b6a968-dfa3-4b3a-a58e-f450655ea3d5/bin/uautomizer/witness.graphml [2020-11-29 18:51:06,249 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 18:51:06,251 INFO L168 Benchmark]: Toolchain (without parser) took 279742.81 ms. Allocated memory is still 73.4 MB. Free memory was 58.7 MB in the beginning and 48.1 MB in the end (delta: 10.6 MB). Peak memory consumption was 9.1 MB. Max. memory is 16.1 GB. [2020-11-29 18:51:06,259 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 73.4 MB. Free memory is still 56.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 18:51:06,262 INFO L168 Benchmark]: CACSL2BoogieTranslator took 269.71 ms. Allocated memory is still 73.4 MB. Free memory was 58.6 MB in the beginning and 47.6 MB in the end (delta: 11.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 18:51:06,263 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.50 ms. Allocated memory is still 73.4 MB. Free memory was 47.4 MB in the beginning and 45.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 18:51:06,264 INFO L168 Benchmark]: Boogie Preprocessor took 36.57 ms. Allocated memory is still 73.4 MB. Free memory was 45.7 MB in the beginning and 44.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 18:51:06,264 INFO L168 Benchmark]: RCFGBuilder took 10177.60 ms. Allocated memory is still 73.4 MB. Free memory was 44.2 MB in the beginning and 52.2 MB in the end (delta: -8.0 MB). Peak memory consumption was 14.4 MB. Max. memory is 16.1 GB. [2020-11-29 18:51:06,266 INFO L168 Benchmark]: TraceAbstraction took 269145.35 ms. Allocated memory is still 73.4 MB. Free memory was 51.6 MB in the beginning and 49.7 MB in the end (delta: 1.9 MB). Peak memory consumption was 3.0 MB. Max. memory is 16.1 GB. [2020-11-29 18:51:06,266 INFO L168 Benchmark]: Witness Printer took 68.09 ms. Allocated memory is still 73.4 MB. Free memory was 49.7 MB in the beginning and 48.1 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 18:51:06,270 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 73.4 MB. Free memory is still 56.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 269.71 ms. Allocated memory is still 73.4 MB. Free memory was 58.6 MB in the beginning and 47.6 MB in the end (delta: 11.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 37.50 ms. Allocated memory is still 73.4 MB. Free memory was 47.4 MB in the beginning and 45.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 36.57 ms. Allocated memory is still 73.4 MB. Free memory was 45.7 MB in the beginning and 44.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 10177.60 ms. Allocated memory is still 73.4 MB. Free memory was 44.2 MB in the beginning and 52.2 MB in the end (delta: -8.0 MB). Peak memory consumption was 14.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 269145.35 ms. Allocated memory is still 73.4 MB. Free memory was 51.6 MB in the beginning and 49.7 MB in the end (delta: 1.9 MB). Peak memory consumption was 3.0 MB. Max. memory is 16.1 GB. * Witness Printer took 68.09 ms. Allocated memory is still 73.4 MB. Free memory was 49.7 MB in the beginning and 48.1 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 10]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L25] int r; [L26] double a, x, s; [L27] a = __VERIFIER_nondet_double() [L28] x = a [L29] s = 3.25 [L30] r = 1 [L32] COND TRUE 1 [L17] COND FALSE !(!(cond)) [L17] COND FALSE !(!(cond)) [L17] COND TRUE !(cond) [L10] __assert_fail("0", "freire2.c", 10, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 31 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 269.0s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 140.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 43 SDtfs, 41 SDslu, 76 SDs, 0 SdLazy, 102 SolverSat, 24 SolverUnsat, 22 SolverUnknown, 0 SolverNotchecked, 87.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 28 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 83.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31occurred 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, 3.1s SatisfiabilityAnalysisTime, 34.2s InterpolantComputationTime, 21 NumberOfCodeBlocks, 21 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 20 ConstructedInterpolants, 1 QuantifiedInterpolants, 1190 SizeOfPredicates, 11 NumberOfNonLiveVariables, 63 ConjunctsInSsa, 12 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, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [MP z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process Received shutdown request...