./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound2.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_eaf72f8d-a242-4cd5-af96-3a81a994a997/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_eaf72f8d-a242-4cd5-af96-3a81a994a997/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_eaf72f8d-a242-4cd5-af96-3a81a994a997/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_eaf72f8d-a242-4cd5-af96-3a81a994a997/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_eaf72f8d-a242-4cd5-af96-3a81a994a997/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_eaf72f8d-a242-4cd5-af96-3a81a994a997/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 771a0d58841ee32dbcd22255998870d19f409341 .................................................................................................................................................................................................................................................................................... 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_eaf72f8d-a242-4cd5-af96-3a81a994a997/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_eaf72f8d-a242-4cd5-af96-3a81a994a997/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_eaf72f8d-a242-4cd5-af96-3a81a994a997/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_eaf72f8d-a242-4cd5-af96-3a81a994a997/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_eaf72f8d-a242-4cd5-af96-3a81a994a997/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_eaf72f8d-a242-4cd5-af96-3a81a994a997/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 771a0d58841ee32dbcd22255998870d19f409341 .............................................................................................................................................................................................................................................................................................................................................................................................. 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 22:26:51,564 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 22:26:51,568 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 22:26:51,628 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 22:26:51,629 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 22:26:51,634 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 22:26:51,637 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 22:26:51,641 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 22:26:51,653 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 22:26:51,675 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 22:26:51,676 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 22:26:51,679 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 22:26:51,679 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 22:26:51,683 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 22:26:51,684 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 22:26:51,687 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 22:26:51,688 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 22:26:51,692 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 22:26:51,696 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 22:26:51,704 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 22:26:51,706 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 22:26:51,708 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 22:26:51,710 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 22:26:51,711 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 22:26:51,721 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 22:26:51,721 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 22:26:51,721 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 22:26:51,724 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 22:26:51,725 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 22:26:51,726 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 22:26:51,726 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 22:26:51,728 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 22:26:51,730 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 22:26:51,731 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 22:26:51,732 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 22:26:51,733 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 22:26:51,734 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 22:26:51,734 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 22:26:51,734 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 22:26:51,735 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 22:26:51,737 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 22:26:51,739 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_eaf72f8d-a242-4cd5-af96-3a81a994a997/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-29 22:26:51,780 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 22:26:51,781 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 22:26:51,782 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 22:26:51,783 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 22:26:51,783 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 22:26:51,783 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 22:26:51,784 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 22:26:51,784 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 22:26:51,784 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 22:26:51,784 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 22:26:51,785 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 22:26:51,786 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 22:26:51,786 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 22:26:51,786 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 22:26:51,786 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 22:26:51,786 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 22:26:51,787 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 22:26:51,787 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 22:26:51,787 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 22:26:51,787 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 22:26:51,787 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 22:26:51,788 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 22:26:51,788 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 22:26:51,788 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 22:26:51,788 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 22:26:51,788 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 22:26:51,789 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 22:26:51,789 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 22:26:51,789 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 22:26:51,789 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_eaf72f8d-a242-4cd5-af96-3a81a994a997/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_eaf72f8d-a242-4cd5-af96-3a81a994a997/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 771a0d58841ee32dbcd22255998870d19f409341 [2020-11-29 22:26:52,145 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 22:26:52,188 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 22:26:52,191 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 22:26:52,192 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 22:26:52,193 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 22:26:52,194 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_eaf72f8d-a242-4cd5-af96-3a81a994a997/bin/uautomizer/../../sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound2.c [2020-11-29 22:26:52,269 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_eaf72f8d-a242-4cd5-af96-3a81a994a997/bin/uautomizer/data/34b2f3e50/cc9117f61ceb4cb39fbfb916679b8f9b/FLAG2ec27caa6 [2020-11-29 22:26:52,860 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 22:26:52,864 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_eaf72f8d-a242-4cd5-af96-3a81a994a997/sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound2.c [2020-11-29 22:26:52,876 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_eaf72f8d-a242-4cd5-af96-3a81a994a997/bin/uautomizer/data/34b2f3e50/cc9117f61ceb4cb39fbfb916679b8f9b/FLAG2ec27caa6 [2020-11-29 22:26:53,210 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_eaf72f8d-a242-4cd5-af96-3a81a994a997/bin/uautomizer/data/34b2f3e50/cc9117f61ceb4cb39fbfb916679b8f9b [2020-11-29 22:26:53,215 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 22:26:53,216 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 22:26:53,224 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 22:26:53,225 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 22:26:53,228 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 22:26:53,229 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 10:26:53" (1/1) ... [2020-11-29 22:26:53,242 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6522f16c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:26:53, skipping insertion in model container [2020-11-29 22:26:53,243 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 10:26:53" (1/1) ... [2020-11-29 22:26:53,250 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 22:26:53,270 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 22:26:53,489 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 22:26:53,498 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 22:26:53,522 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 22:26:53,547 INFO L208 MainTranslator]: Completed translation [2020-11-29 22:26:53,548 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:26:53 WrapperNode [2020-11-29 22:26:53,548 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 22:26:53,549 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 22:26:53,550 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 22:26:53,550 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 22:26:53,561 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:26:53" (1/1) ... [2020-11-29 22:26:53,581 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:26:53" (1/1) ... [2020-11-29 22:26:53,614 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 22:26:53,616 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 22:26:53,616 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 22:26:53,617 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 22:26:53,626 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:26:53" (1/1) ... [2020-11-29 22:26:53,626 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:26:53" (1/1) ... [2020-11-29 22:26:53,629 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:26:53" (1/1) ... [2020-11-29 22:26:53,629 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:26:53" (1/1) ... [2020-11-29 22:26:53,644 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:26:53" (1/1) ... [2020-11-29 22:26:53,648 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:26:53" (1/1) ... [2020-11-29 22:26:53,653 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:26:53" (1/1) ... [2020-11-29 22:26:53,656 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 22:26:53,656 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 22:26:53,657 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 22:26:53,657 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 22:26:53,662 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:26:53" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_eaf72f8d-a242-4cd5-af96-3a81a994a997/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 22:26:53,741 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 22:26:53,741 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 22:26:53,742 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 22:26:53,743 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 22:26:54,098 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 22:26:54,098 INFO L298 CfgBuilder]: Removed 31 assume(true) statements. [2020-11-29 22:26:54,100 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 10:26:54 BoogieIcfgContainer [2020-11-29 22:26:54,100 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 22:26:54,101 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 22:26:54,102 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 22:26:54,106 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 22:26:54,109 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 10:26:53" (1/3) ... [2020-11-29 22:26:54,110 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c24a756 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 10:26:54, skipping insertion in model container [2020-11-29 22:26:54,110 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:26:53" (2/3) ... [2020-11-29 22:26:54,110 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c24a756 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 10:26:54, skipping insertion in model container [2020-11-29 22:26:54,111 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 10:26:54" (3/3) ... [2020-11-29 22:26:54,112 INFO L111 eAbstractionObserver]: Analyzing ICFG freire2_valuebound2.c [2020-11-29 22:26:54,127 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 22:26:54,132 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-11-29 22:26:54,144 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-11-29 22:26:54,175 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 22:26:54,175 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 22:26:54,175 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 22:26:54,175 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 22:26:54,175 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 22:26:54,175 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 22:26:54,176 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 22:26:54,176 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 22:26:54,190 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-11-29 22:26:54,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-29 22:26:54,196 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:26:54,196 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:26:54,197 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 22:26:54,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:26:54,203 INFO L82 PathProgramCache]: Analyzing trace with hash 1804972333, now seen corresponding path program 1 times [2020-11-29 22:26:54,212 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:26:54,213 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966489108] [2020-11-29 22:26:54,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:26:54,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:26:54,434 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 22:26:54,435 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966489108] [2020-11-29 22:26:54,436 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:26:54,437 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 22:26:54,438 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729553505] [2020-11-29 22:26:54,443 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-29 22:26:54,443 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:26:54,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-29 22:26:54,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 22:26:54,465 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 2 states. [2020-11-29 22:26:54,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:26:54,489 INFO L93 Difference]: Finished difference Result 63 states and 80 transitions. [2020-11-29 22:26:54,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-29 22:26:54,490 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2020-11-29 22:26:54,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:26:54,499 INFO L225 Difference]: With dead ends: 63 [2020-11-29 22:26:54,499 INFO L226 Difference]: Without dead ends: 29 [2020-11-29 22:26:54,502 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 22:26:54,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-11-29 22:26:54,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-11-29 22:26:54,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-11-29 22:26:54,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2020-11-29 22:26:54,539 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 7 [2020-11-29 22:26:54,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:26:54,540 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2020-11-29 22:26:54,540 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-29 22:26:54,541 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2020-11-29 22:26:54,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-29 22:26:54,541 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:26:54,541 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:26:54,542 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 22:26:54,542 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 22:26:54,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:26:54,543 INFO L82 PathProgramCache]: Analyzing trace with hash 1806819375, now seen corresponding path program 1 times [2020-11-29 22:26:54,544 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:26:54,544 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098174407] [2020-11-29 22:26:54,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:26:54,561 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 22:26:54,561 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [29168491] [2020-11-29 22:26:54,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_eaf72f8d-a242-4cd5-af96-3a81a994a997/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 22:26:54,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:26:54,622 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:26:54,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:26:54,650 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:26:54,685 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 22:26:54,686 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-29 22:26:54,897 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-11-29 22:26:54,931 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 10:26:54 BoogieIcfgContainer [2020-11-29 22:26:54,931 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 22:26:54,932 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 22:26:54,932 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 22:26:54,933 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 22:26:54,933 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 10:26:54" (3/4) ... [2020-11-29 22:26:54,937 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-29 22:26:54,937 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 22:26:54,941 INFO L168 Benchmark]: Toolchain (without parser) took 1721.81 ms. Allocated memory was 94.4 MB in the beginning and 117.4 MB in the end (delta: 23.1 MB). Free memory was 66.0 MB in the beginning and 77.2 MB in the end (delta: -11.1 MB). Peak memory consumption was 9.2 MB. Max. memory is 16.1 GB. [2020-11-29 22:26:54,943 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 94.4 MB. Free memory was 52.6 MB in the beginning and 52.6 MB in the end (delta: 1.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 22:26:54,945 INFO L168 Benchmark]: CACSL2BoogieTranslator took 324.16 ms. Allocated memory is still 94.4 MB. Free memory was 65.8 MB in the beginning and 70.6 MB in the end (delta: -4.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 22:26:54,946 INFO L168 Benchmark]: Boogie Procedure Inliner took 65.04 ms. Allocated memory is still 94.4 MB. Free memory was 70.6 MB in the beginning and 68.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 22:26:54,946 INFO L168 Benchmark]: Boogie Preprocessor took 40.01 ms. Allocated memory is still 94.4 MB. Free memory was 68.9 MB in the beginning and 67.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 22:26:54,948 INFO L168 Benchmark]: RCFGBuilder took 443.48 ms. Allocated memory is still 94.4 MB. Free memory was 67.6 MB in the beginning and 53.6 MB in the end (delta: 14.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-29 22:26:54,948 INFO L168 Benchmark]: TraceAbstraction took 829.80 ms. Allocated memory was 94.4 MB in the beginning and 117.4 MB in the end (delta: 23.1 MB). Free memory was 52.9 MB in the beginning and 77.2 MB in the end (delta: -24.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 22:26:54,951 INFO L168 Benchmark]: Witness Printer took 5.35 ms. Allocated memory is still 117.4 MB. Free memory is still 77.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 22:26:54,962 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 94.4 MB. Free memory was 52.6 MB in the beginning and 52.6 MB in the end (delta: 1.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 324.16 ms. Allocated memory is still 94.4 MB. Free memory was 65.8 MB in the beginning and 70.6 MB in the end (delta: -4.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 65.04 ms. Allocated memory is still 94.4 MB. Free memory was 70.6 MB in the beginning and 68.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 40.01 ms. Allocated memory is still 94.4 MB. Free memory was 68.9 MB in the beginning and 67.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 443.48 ms. Allocated memory is still 94.4 MB. Free memory was 67.6 MB in the beginning and 53.6 MB in the end (delta: 14.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 829.80 ms. Allocated memory was 94.4 MB in the beginning and 117.4 MB in the end (delta: 23.1 MB). Free memory was 52.9 MB in the beginning and 77.2 MB in the end (delta: -24.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 5.35 ms. Allocated memory is still 117.4 MB. Free memory is still 77.2 MB. 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 34, overapproximation of someBinaryDOUBLEComparisonOperation at line 28. Possible FailurePath: [L25] int r; [L26] double a, x, s; [L27] a = __VERIFIER_nondet_double() [L14] COND FALSE !(!cond) [L29] x = a [L30] s = 3.25 [L31] r = 1 [L33] 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, 33 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.7s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 33 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 36 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, 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 22:26:57,553 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 22:26:57,557 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 22:26:57,610 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 22:26:57,611 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 22:26:57,617 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 22:26:57,620 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 22:26:57,624 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 22:26:57,628 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 22:26:57,634 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 22:26:57,636 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 22:26:57,643 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 22:26:57,653 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 22:26:57,657 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 22:26:57,659 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 22:26:57,661 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 22:26:57,662 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 22:26:57,666 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 22:26:57,670 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 22:26:57,680 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 22:26:57,688 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 22:26:57,691 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 22:26:57,692 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 22:26:57,695 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 22:26:57,699 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 22:26:57,703 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 22:26:57,703 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 22:26:57,704 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 22:26:57,706 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 22:26:57,707 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 22:26:57,708 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 22:26:57,709 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 22:26:57,711 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 22:26:57,712 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 22:26:57,713 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 22:26:57,713 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 22:26:57,714 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 22:26:57,715 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 22:26:57,715 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 22:26:57,717 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 22:26:57,718 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 22:26:57,719 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_eaf72f8d-a242-4cd5-af96-3a81a994a997/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-11-29 22:26:57,764 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 22:26:57,764 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 22:26:57,768 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 22:26:57,768 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 22:26:57,769 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 22:26:57,769 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 22:26:57,770 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 22:26:57,770 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 22:26:57,770 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 22:26:57,770 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 22:26:57,771 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 22:26:57,772 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 22:26:57,772 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-29 22:26:57,772 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-29 22:26:57,773 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 22:26:57,773 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 22:26:57,773 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 22:26:57,773 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 22:26:57,773 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 22:26:57,774 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 22:26:57,774 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 22:26:57,774 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 22:26:57,774 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 22:26:57,775 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 22:26:57,775 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 22:26:57,775 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 22:26:57,775 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-11-29 22:26:57,775 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-29 22:26:57,776 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 22:26:57,776 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 22:26:57,776 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-29 22:26:57,776 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_eaf72f8d-a242-4cd5-af96-3a81a994a997/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_eaf72f8d-a242-4cd5-af96-3a81a994a997/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 771a0d58841ee32dbcd22255998870d19f409341 [2020-11-29 22:26:58,218 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 22:26:58,249 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 22:26:58,252 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 22:26:58,254 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 22:26:58,255 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 22:26:58,256 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_eaf72f8d-a242-4cd5-af96-3a81a994a997/bin/uautomizer/../../sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound2.c [2020-11-29 22:26:58,347 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_eaf72f8d-a242-4cd5-af96-3a81a994a997/bin/uautomizer/data/c5954f241/fc04cd8a53374ac7855ed810845668e1/FLAGb5bacb008 [2020-11-29 22:26:58,985 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 22:26:58,990 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_eaf72f8d-a242-4cd5-af96-3a81a994a997/sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound2.c [2020-11-29 22:26:58,998 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_eaf72f8d-a242-4cd5-af96-3a81a994a997/bin/uautomizer/data/c5954f241/fc04cd8a53374ac7855ed810845668e1/FLAGb5bacb008 [2020-11-29 22:26:59,017 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_eaf72f8d-a242-4cd5-af96-3a81a994a997/bin/uautomizer/data/c5954f241/fc04cd8a53374ac7855ed810845668e1 [2020-11-29 22:26:59,020 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 22:26:59,021 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 22:26:59,025 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 22:26:59,025 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 22:26:59,030 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 22:26:59,031 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 10:26:59" (1/1) ... [2020-11-29 22:26:59,038 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b0587 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:26:59, skipping insertion in model container [2020-11-29 22:26:59,038 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 10:26:59" (1/1) ... [2020-11-29 22:26:59,046 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 22:26:59,065 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 22:26:59,237 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 22:26:59,251 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 22:26:59,310 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 22:26:59,334 INFO L208 MainTranslator]: Completed translation [2020-11-29 22:26:59,335 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:26:59 WrapperNode [2020-11-29 22:26:59,335 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 22:26:59,336 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 22:26:59,336 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 22:26:59,336 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 22:26:59,344 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:26:59" (1/1) ... [2020-11-29 22:26:59,355 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:26:59" (1/1) ... [2020-11-29 22:26:59,378 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 22:26:59,379 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 22:26:59,379 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 22:26:59,379 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 22:26:59,388 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:26:59" (1/1) ... [2020-11-29 22:26:59,388 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:26:59" (1/1) ... [2020-11-29 22:26:59,391 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:26:59" (1/1) ... [2020-11-29 22:26:59,392 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:26:59" (1/1) ... [2020-11-29 22:26:59,401 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:26:59" (1/1) ... [2020-11-29 22:26:59,405 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:26:59" (1/1) ... [2020-11-29 22:26:59,408 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:26:59" (1/1) ... [2020-11-29 22:26:59,412 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 22:26:59,413 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 22:26:59,413 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 22:26:59,413 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 22:26:59,414 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:26:59" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_eaf72f8d-a242-4cd5-af96-3a81a994a997/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 22:26:59,477 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-29 22:26:59,477 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 22:26:59,477 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 22:26:59,477 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 22:27:10,499 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 22:27:10,499 INFO L298 CfgBuilder]: Removed 31 assume(true) statements. [2020-11-29 22:27:10,501 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 10:27:10 BoogieIcfgContainer [2020-11-29 22:27:10,501 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 22:27:10,503 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 22:27:10,504 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 22:27:10,507 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 22:27:10,507 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 10:26:59" (1/3) ... [2020-11-29 22:27:10,508 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35429473 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 10:27:10, skipping insertion in model container [2020-11-29 22:27:10,509 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:26:59" (2/3) ... [2020-11-29 22:27:10,509 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35429473 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 10:27:10, skipping insertion in model container [2020-11-29 22:27:10,509 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 10:27:10" (3/3) ... [2020-11-29 22:27:10,511 INFO L111 eAbstractionObserver]: Analyzing ICFG freire2_valuebound2.c [2020-11-29 22:27:10,523 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 22:27:10,528 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-11-29 22:27:10,541 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-11-29 22:27:10,567 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 22:27:10,568 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 22:27:10,568 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 22:27:10,568 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 22:27:10,568 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 22:27:10,569 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 22:27:10,569 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 22:27:10,569 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 22:27:10,583 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-11-29 22:27:10,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-29 22:27:10,589 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:27:10,589 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:27:10,590 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 22:27:10,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:27:10,597 INFO L82 PathProgramCache]: Analyzing trace with hash 1804972333, now seen corresponding path program 1 times [2020-11-29 22:27:10,608 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 22:27:10,609 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [120063047] [2020-11-29 22:27:10,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_eaf72f8d-a242-4cd5-af96-3a81a994a997/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 22:27:10,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:27:10,788 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 1 conjunts are in the unsatisfiable core [2020-11-29 22:27:10,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:27:10,806 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 22:27:10,807 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 22:27:10,810 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 22:27:10,811 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [120063047] [2020-11-29 22:27:10,812 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:27:10,812 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-29 22:27:10,813 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864849491] [2020-11-29 22:27:10,827 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-29 22:27:10,828 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 22:27:10,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-29 22:27:10,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 22:27:10,844 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 2 states. [2020-11-29 22:27:10,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:27:10,866 INFO L93 Difference]: Finished difference Result 63 states and 80 transitions. [2020-11-29 22:27:10,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-29 22:27:10,868 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2020-11-29 22:27:10,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:27:10,876 INFO L225 Difference]: With dead ends: 63 [2020-11-29 22:27:10,877 INFO L226 Difference]: Without dead ends: 29 [2020-11-29 22:27:10,880 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 22:27:10,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-11-29 22:27:10,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-11-29 22:27:10,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-11-29 22:27:10,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2020-11-29 22:27:10,924 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 7 [2020-11-29 22:27:10,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:27:10,926 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2020-11-29 22:27:10,926 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-29 22:27:10,926 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2020-11-29 22:27:10,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-29 22:27:10,928 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:27:10,928 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:27:11,141 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-29 22:27:11,142 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 22:27:11,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:27:11,143 INFO L82 PathProgramCache]: Analyzing trace with hash 1806819375, now seen corresponding path program 1 times [2020-11-29 22:27:11,143 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 22:27:11,144 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2089196102] [2020-11-29 22:27:11,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_eaf72f8d-a242-4cd5-af96-3a81a994a997/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 22:27:11,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:27:11,346 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-29 22:27:11,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:27:11,464 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 22:27:11,465 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 22:27:15,319 WARN L193 SmtUtils]: Spent 1.01 s on a formula simplification that was a NOOP. DAG size: 15 [2020-11-29 22:27:15,334 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 22:27:15,334 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2089196102] [2020-11-29 22:27:15,334 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:27:15,335 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2020-11-29 22:27:15,335 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444349793] [2020-11-29 22:27:15,336 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-29 22:27:15,336 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 22:27:15,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-29 22:27:15,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-11-29 22:27:15,338 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand 7 states. [2020-11-29 22:27:43,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:27:43,308 INFO L93 Difference]: Finished difference Result 38 states and 38 transitions. [2020-11-29 22:27:43,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-29 22:27:43,309 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 7 [2020-11-29 22:27:43,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:27:43,310 INFO L225 Difference]: With dead ends: 38 [2020-11-29 22:27:43,310 INFO L226 Difference]: Without dead ends: 36 [2020-11-29 22:27:43,311 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-11-29 22:27:43,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-11-29 22:27:43,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 31. [2020-11-29 22:27:43,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-11-29 22:27:43,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2020-11-29 22:27:43,319 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 7 [2020-11-29 22:27:43,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:27:43,320 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions. [2020-11-29 22:27:43,320 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-29 22:27:43,320 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2020-11-29 22:27:43,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-29 22:27:43,321 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:27:43,321 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:27:43,521 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-29 22:27:43,523 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 22:27:43,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:27:43,524 INFO L82 PathProgramCache]: Analyzing trace with hash 1186818322, now seen corresponding path program 1 times [2020-11-29 22:27:43,525 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 22:27:43,525 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [809968547] [2020-11-29 22:27:43,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_eaf72f8d-a242-4cd5-af96-3a81a994a997/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 22:27:44,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:27:44,377 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-29 22:27:44,378 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:27:44,471 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 22:27:44,567 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-29 22:27:45,114 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 22:27:45,114 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 22:28:03,537 WARN L193 SmtUtils]: Spent 3.64 s on a formula simplification that was a NOOP. DAG size: 22 [2020-11-29 22:28:11,532 WARN L193 SmtUtils]: Spent 694.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2020-11-29 22:28:22,539 WARN L193 SmtUtils]: Spent 2.35 s on a formula simplification that was a NOOP. DAG size: 13 [2020-11-29 22:28:22,568 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 3, 2, 1] term [2020-11-29 22:28:22,569 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-29 22:28:23,353 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 22:28:23,354 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [809968547] [2020-11-29 22:28:23,354 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:28:23,354 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 11 [2020-11-29 22:28:23,354 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668542980] [2020-11-29 22:28:23,355 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-29 22:28:23,355 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 22:28:23,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-29 22:28:23,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=76, Unknown=3, NotChecked=0, Total=110 [2020-11-29 22:28:23,356 INFO L87 Difference]: Start difference. First operand 31 states and 31 transitions. Second operand 11 states. [2020-11-29 22:28:57,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:28:57,969 INFO L93 Difference]: Finished difference Result 36 states and 36 transitions. [2020-11-29 22:28:57,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-29 22:28:57,970 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 9 [2020-11-29 22:28:57,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:28:57,971 INFO L225 Difference]: With dead ends: 36 [2020-11-29 22:28:57,971 INFO L226 Difference]: Without dead ends: 34 [2020-11-29 22:28:57,972 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 40.8s TimeCoverageRelationStatistics Valid=74, Invalid=132, Unknown=4, NotChecked=0, Total=210 [2020-11-29 22:28:57,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-11-29 22:28:57,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2020-11-29 22:28:57,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-11-29 22:28:57,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 33 transitions. [2020-11-29 22:28:57,981 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 33 transitions. Word has length 9 [2020-11-29 22:28:57,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:28:57,981 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 33 transitions. [2020-11-29 22:28:57,981 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-29 22:28:57,981 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 33 transitions. [2020-11-29 22:28:57,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-29 22:28:57,982 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:28:57,982 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:28:58,186 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-29 22:28:58,187 INFO L429 AbstractCegarLoop]: === Iteration 4 === [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 22:28:58,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:28:58,188 INFO L82 PathProgramCache]: Analyzing trace with hash -1928706379, now seen corresponding path program 1 times [2020-11-29 22:28:58,188 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 22:28:58,189 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1032006860] [2020-11-29 22:28:58,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_eaf72f8d-a242-4cd5-af96-3a81a994a997/bin/uautomizer/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-11-29 22:29:35,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:29:35,703 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:29:44,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:29:44,011 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:29:44,165 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-11-29 22:29:44,165 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-29 22:29:44,366 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-11-29 22:29:44,402 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 10:29:44 BoogieIcfgContainer [2020-11-29 22:29:44,402 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 22:29:44,403 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 22:29:44,403 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 22:29:44,403 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 22:29:44,404 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 10:27:10" (3/4) ... [2020-11-29 22:29:44,408 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-29 22:29:44,477 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_eaf72f8d-a242-4cd5-af96-3a81a994a997/bin/uautomizer/witness.graphml [2020-11-29 22:29:44,479 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 22:29:44,481 INFO L168 Benchmark]: Toolchain (without parser) took 165459.44 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 32.9 MB in the beginning and 46.1 MB in the end (delta: -13.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 22:29:44,482 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 54.5 MB. Free memory is still 36.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 22:29:44,483 INFO L168 Benchmark]: CACSL2BoogieTranslator took 310.00 ms. Allocated memory is still 54.5 MB. Free memory was 32.7 MB in the beginning and 36.7 MB in the end (delta: -3.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-29 22:29:44,483 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.15 ms. Allocated memory is still 54.5 MB. Free memory was 36.7 MB in the beginning and 34.9 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 22:29:44,484 INFO L168 Benchmark]: Boogie Preprocessor took 33.16 ms. Allocated memory is still 54.5 MB. Free memory was 34.9 MB in the beginning and 33.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 22:29:44,485 INFO L168 Benchmark]: RCFGBuilder took 11088.97 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 33.3 MB in the beginning and 43.8 MB in the end (delta: -10.5 MB). Peak memory consumption was 13.9 MB. Max. memory is 16.1 GB. [2020-11-29 22:29:44,486 INFO L168 Benchmark]: TraceAbstraction took 153898.78 ms. Allocated memory is still 67.1 MB. Free memory was 43.4 MB in the beginning and 48.2 MB in the end (delta: -4.8 MB). Peak memory consumption was 19.8 MB. Max. memory is 16.1 GB. [2020-11-29 22:29:44,487 INFO L168 Benchmark]: Witness Printer took 76.86 ms. Allocated memory is still 67.1 MB. Free memory was 48.2 MB in the beginning and 46.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 22:29:44,494 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 54.5 MB. Free memory is still 36.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 310.00 ms. Allocated memory is still 54.5 MB. Free memory was 32.7 MB in the beginning and 36.7 MB in the end (delta: -3.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 42.15 ms. Allocated memory is still 54.5 MB. Free memory was 36.7 MB in the beginning and 34.9 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 33.16 ms. Allocated memory is still 54.5 MB. Free memory was 34.9 MB in the beginning and 33.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 11088.97 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 33.3 MB in the beginning and 43.8 MB in the end (delta: -10.5 MB). Peak memory consumption was 13.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 153898.78 ms. Allocated memory is still 67.1 MB. Free memory was 43.4 MB in the beginning and 48.2 MB in the end (delta: -4.8 MB). Peak memory consumption was 19.8 MB. Max. memory is 16.1 GB. * Witness Printer took 76.86 ms. Allocated memory is still 67.1 MB. Free memory was 48.2 MB in the beginning and 46.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. 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() [L14] COND FALSE !(!cond) [L29] x = a [L30] s = 3.25 [L31] r = 1 [L33] 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, 33 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 153.8s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 62.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 80 SDtfs, 37 SDslu, 140 SDs, 0 SdLazy, 77 SolverSat, 16 SolverUnsat, 20 SolverUnknown, 0 SolverNotchecked, 58.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 46 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 44.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred 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, 3 MinimizatonAttempts, 6 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 38.4s SatisfiabilityAnalysisTime, 43.0s InterpolantComputationTime, 34 NumberOfCodeBlocks, 34 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 40 ConstructedInterpolants, 0 QuantifiedInterpolants, 2520 SizeOfPredicates, 13 NumberOfNonLiveVariables, 102 ConjunctsInSsa, 16 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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! Received shutdown request...