./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound100.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_69ff9960-1a26-411d-bbe1-516c94dc8f46/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_69ff9960-1a26-411d-bbe1-516c94dc8f46/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_69ff9960-1a26-411d-bbe1-516c94dc8f46/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_69ff9960-1a26-411d-bbe1-516c94dc8f46/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound100.c -s /tmp/vcloud-vcloud-master/worker/run_dir_69ff9960-1a26-411d-bbe1-516c94dc8f46/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_69ff9960-1a26-411d-bbe1-516c94dc8f46/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 3c7d534ce760a9274ac47025fdd8fc3e9745a9d4 ............................................................................................................................................................................................................................................ 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_69ff9960-1a26-411d-bbe1-516c94dc8f46/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_69ff9960-1a26-411d-bbe1-516c94dc8f46/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_69ff9960-1a26-411d-bbe1-516c94dc8f46/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_69ff9960-1a26-411d-bbe1-516c94dc8f46/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound100.c -s /tmp/vcloud-vcloud-master/worker/run_dir_69ff9960-1a26-411d-bbe1-516c94dc8f46/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_69ff9960-1a26-411d-bbe1-516c94dc8f46/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 3c7d534ce760a9274ac47025fdd8fc3e9745a9d4 ......................................................................................................................................................................................................................................................................................................................................................................................................................... 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 [2020-11-30 00:14:51,019 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 00:14:51,021 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 00:14:51,111 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 00:14:51,112 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 00:14:51,114 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 00:14:51,116 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 00:14:51,119 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 00:14:51,121 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 00:14:51,123 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 00:14:51,125 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 00:14:51,126 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 00:14:51,127 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 00:14:51,129 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 00:14:51,130 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 00:14:51,132 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 00:14:51,133 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 00:14:51,135 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 00:14:51,137 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 00:14:51,140 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 00:14:51,143 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 00:14:51,149 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 00:14:51,151 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 00:14:51,153 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 00:14:51,157 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 00:14:51,157 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 00:14:51,158 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 00:14:51,172 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 00:14:51,175 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 00:14:51,177 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 00:14:51,177 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 00:14:51,178 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 00:14:51,180 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 00:14:51,182 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 00:14:51,185 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 00:14:51,186 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 00:14:51,187 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 00:14:51,188 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 00:14:51,188 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 00:14:51,190 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 00:14:51,192 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 00:14:51,196 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_69ff9960-1a26-411d-bbe1-516c94dc8f46/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-30 00:14:51,250 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 00:14:51,251 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 00:14:51,253 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 00:14:51,254 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 00:14:51,254 INFO L138 SettingsManager]: * Use SBE=true [2020-11-30 00:14:51,254 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 00:14:51,254 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 00:14:51,255 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 00:14:51,255 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 00:14:51,255 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 00:14:51,257 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 00:14:51,257 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 00:14:51,257 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 00:14:51,258 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 00:14:51,258 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 00:14:51,258 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 00:14:51,258 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 00:14:51,259 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 00:14:51,259 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 00:14:51,259 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 00:14:51,259 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 00:14:51,260 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 00:14:51,260 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 00:14:51,260 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 00:14:51,261 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 00:14:51,261 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-30 00:14:51,261 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 00:14:51,261 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 00:14:51,262 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 00:14:51,262 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_69ff9960-1a26-411d-bbe1-516c94dc8f46/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_69ff9960-1a26-411d-bbe1-516c94dc8f46/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3c7d534ce760a9274ac47025fdd8fc3e9745a9d4 [2020-11-30 00:14:51,581 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 00:14:51,626 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 00:14:51,632 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 00:14:51,633 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 00:14:51,635 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 00:14:51,636 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_69ff9960-1a26-411d-bbe1-516c94dc8f46/bin/uautomizer/../../sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound100.c [2020-11-30 00:14:51,745 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_69ff9960-1a26-411d-bbe1-516c94dc8f46/bin/uautomizer/data/915e000ee/a7c7517be00e48d6ae08a245023f8d08/FLAG1917e155e [2020-11-30 00:14:52,286 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 00:14:52,287 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_69ff9960-1a26-411d-bbe1-516c94dc8f46/sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound100.c [2020-11-30 00:14:52,298 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_69ff9960-1a26-411d-bbe1-516c94dc8f46/bin/uautomizer/data/915e000ee/a7c7517be00e48d6ae08a245023f8d08/FLAG1917e155e [2020-11-30 00:14:52,640 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_69ff9960-1a26-411d-bbe1-516c94dc8f46/bin/uautomizer/data/915e000ee/a7c7517be00e48d6ae08a245023f8d08 [2020-11-30 00:14:52,642 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 00:14:52,644 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 00:14:52,646 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 00:14:52,646 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 00:14:52,651 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 00:14:52,652 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:14:52" (1/1) ... [2020-11-30 00:14:52,654 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@754689c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:14:52, skipping insertion in model container [2020-11-30 00:14:52,655 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:14:52" (1/1) ... [2020-11-30 00:14:52,664 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 00:14:52,683 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 00:14:52,966 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:14:52,989 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 00:14:53,021 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:14:53,043 INFO L208 MainTranslator]: Completed translation [2020-11-30 00:14:53,044 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:14:53 WrapperNode [2020-11-30 00:14:53,044 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 00:14:53,045 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 00:14:53,045 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 00:14:53,046 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 00:14:53,053 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:14:53" (1/1) ... [2020-11-30 00:14:53,061 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:14:53" (1/1) ... [2020-11-30 00:14:53,084 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 00:14:53,085 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 00:14:53,085 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 00:14:53,085 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 00:14:53,094 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:14:53" (1/1) ... [2020-11-30 00:14:53,095 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:14:53" (1/1) ... [2020-11-30 00:14:53,096 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:14:53" (1/1) ... [2020-11-30 00:14:53,097 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:14:53" (1/1) ... [2020-11-30 00:14:53,102 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:14:53" (1/1) ... [2020-11-30 00:14:53,107 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:14:53" (1/1) ... [2020-11-30 00:14:53,109 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:14:53" (1/1) ... [2020-11-30 00:14:53,111 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 00:14:53,112 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 00:14:53,113 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 00:14:53,113 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 00:14:53,114 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:14:53" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_69ff9960-1a26-411d-bbe1-516c94dc8f46/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 [2020-11-30 00:14:53,194 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 00:14:53,194 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 00:14:53,194 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 00:14:53,194 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 00:14:53,447 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 00:14:53,447 INFO L298 CfgBuilder]: Removed 13 assume(true) statements. [2020-11-30 00:14:53,449 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:14:53 BoogieIcfgContainer [2020-11-30 00:14:53,449 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 00:14:53,467 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 00:14:53,468 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 00:14:53,485 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 00:14:53,485 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 12:14:52" (1/3) ... [2020-11-30 00:14:53,486 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18b84ba5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:14:53, skipping insertion in model container [2020-11-30 00:14:53,486 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:14:53" (2/3) ... [2020-11-30 00:14:53,487 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18b84ba5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:14:53, skipping insertion in model container [2020-11-30 00:14:53,487 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:14:53" (3/3) ... [2020-11-30 00:14:53,489 INFO L111 eAbstractionObserver]: Analyzing ICFG freire1_unwindbound100.c [2020-11-30 00:14:53,502 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 00:14:53,525 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-11-30 00:14:53,566 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-11-30 00:14:53,612 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 00:14:53,613 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 00:14:53,613 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 00:14:53,613 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 00:14:53,614 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 00:14:53,614 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 00:14:53,614 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 00:14:53,614 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 00:14:53,631 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2020-11-30 00:14:53,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-30 00:14:53,637 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:14:53,638 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-30 00:14:53,639 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:14:53,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:14:53,647 INFO L82 PathProgramCache]: Analyzing trace with hash 889571274, now seen corresponding path program 1 times [2020-11-30 00:14:53,658 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:14:53,659 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191364992] [2020-11-30 00:14:53,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:14:53,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:14:53,796 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:14:53,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:14:53,822 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:14:53,851 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:14:53,852 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-30 00:14:53,853 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-30 00:14:53,884 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 12:14:53 BoogieIcfgContainer [2020-11-30 00:14:53,885 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 00:14:53,886 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 00:14:53,886 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 00:14:53,887 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 00:14:53,887 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:14:53" (3/4) ... [2020-11-30 00:14:53,891 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-30 00:14:53,892 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 00:14:53,894 INFO L168 Benchmark]: Toolchain (without parser) took 1248.66 ms. Allocated memory is still 111.1 MB. Free memory was 82.1 MB in the beginning and 62.9 MB in the end (delta: 19.2 MB). Peak memory consumption was 18.0 MB. Max. memory is 16.1 GB. [2020-11-30 00:14:53,896 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 79.7 MB. Free memory was 41.5 MB in the beginning and 41.5 MB in the end (delta: 43.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:14:53,897 INFO L168 Benchmark]: CACSL2BoogieTranslator took 398.09 ms. Allocated memory is still 111.1 MB. Free memory was 82.1 MB in the beginning and 89.7 MB in the end (delta: -7.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-30 00:14:53,898 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.97 ms. Allocated memory is still 111.1 MB. Free memory was 89.7 MB in the beginning and 88.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:14:53,899 INFO L168 Benchmark]: Boogie Preprocessor took 26.66 ms. Allocated memory is still 111.1 MB. Free memory was 88.0 MB in the beginning and 87.2 MB in the end (delta: 826.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:14:53,900 INFO L168 Benchmark]: RCFGBuilder took 343.80 ms. Allocated memory is still 111.1 MB. Free memory was 87.2 MB in the beginning and 75.5 MB in the end (delta: 11.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-30 00:14:53,901 INFO L168 Benchmark]: TraceAbstraction took 417.67 ms. Allocated memory is still 111.1 MB. Free memory was 75.1 MB in the beginning and 62.9 MB in the end (delta: 12.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-30 00:14:53,902 INFO L168 Benchmark]: Witness Printer took 5.66 ms. Allocated memory is still 111.1 MB. Free memory is still 62.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:14:53,907 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 79.7 MB. Free memory was 41.5 MB in the beginning and 41.5 MB in the end (delta: 43.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 398.09 ms. Allocated memory is still 111.1 MB. Free memory was 82.1 MB in the beginning and 89.7 MB in the end (delta: -7.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 38.97 ms. Allocated memory is still 111.1 MB. Free memory was 89.7 MB in the beginning and 88.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 26.66 ms. Allocated memory is still 111.1 MB. Free memory was 88.0 MB in the beginning and 87.2 MB in the end (delta: 826.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 343.80 ms. Allocated memory is still 111.1 MB. Free memory was 87.2 MB in the beginning and 75.5 MB in the end (delta: 11.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 417.67 ms. Allocated memory is still 111.1 MB. Free memory was 75.1 MB in the beginning and 62.9 MB in the end (delta: 12.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Witness Printer took 5.66 ms. Allocated memory is still 111.1 MB. Free memory is still 62.9 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 33, overapproximation of someBinaryArithmeticDOUBLEoperation at line 29. Possible FailurePath: [L24] int counter = 0; VAL [counter=0] [L26] int r; [L27] double a, x; [L28] a = __VERIFIER_nondet_double() [L29] x = a / 2.0 [L30] r = 0 VAL [counter=0] [L32] EXPR counter++ VAL [counter=1] [L32] COND TRUE counter++<100 [L17] COND TRUE !(cond) VAL [counter=1] [L10] __assert_fail("0", "freire1.c", 10, "reach_error") VAL [counter=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.2s, 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=16occurred 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, 6 NumberOfCodeBlocks, 6 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 [2020-11-30 00:14:56,953 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 00:14:56,956 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 00:14:57,012 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 00:14:57,013 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 00:14:57,015 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 00:14:57,018 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 00:14:57,021 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 00:14:57,024 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 00:14:57,025 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 00:14:57,027 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 00:14:57,051 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 00:14:57,052 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 00:14:57,054 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 00:14:57,055 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 00:14:57,057 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 00:14:57,062 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 00:14:57,068 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 00:14:57,071 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 00:14:57,077 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 00:14:57,088 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 00:14:57,091 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 00:14:57,093 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 00:14:57,095 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 00:14:57,105 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 00:14:57,108 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 00:14:57,109 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 00:14:57,110 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 00:14:57,112 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 00:14:57,114 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 00:14:57,115 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 00:14:57,116 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 00:14:57,118 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 00:14:57,120 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 00:14:57,121 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 00:14:57,122 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 00:14:57,122 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 00:14:57,123 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 00:14:57,123 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 00:14:57,125 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 00:14:57,126 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 00:14:57,128 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_69ff9960-1a26-411d-bbe1-516c94dc8f46/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-11-30 00:14:57,187 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 00:14:57,187 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 00:14:57,191 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 00:14:57,192 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 00:14:57,192 INFO L138 SettingsManager]: * Use SBE=true [2020-11-30 00:14:57,192 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 00:14:57,193 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 00:14:57,193 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 00:14:57,193 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 00:14:57,194 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 00:14:57,195 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 00:14:57,195 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 00:14:57,196 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-30 00:14:57,196 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-30 00:14:57,196 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 00:14:57,196 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 00:14:57,197 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 00:14:57,197 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 00:14:57,197 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 00:14:57,198 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 00:14:57,198 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 00:14:57,198 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 00:14:57,198 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 00:14:57,199 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 00:14:57,199 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 00:14:57,199 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 00:14:57,200 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-11-30 00:14:57,200 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-30 00:14:57,200 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 00:14:57,200 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 00:14:57,201 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-30 00:14:57,201 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_69ff9960-1a26-411d-bbe1-516c94dc8f46/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_69ff9960-1a26-411d-bbe1-516c94dc8f46/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3c7d534ce760a9274ac47025fdd8fc3e9745a9d4 [2020-11-30 00:14:57,714 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 00:14:57,762 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 00:14:57,767 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 00:14:57,770 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 00:14:57,770 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 00:14:57,772 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_69ff9960-1a26-411d-bbe1-516c94dc8f46/bin/uautomizer/../../sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound100.c [2020-11-30 00:14:57,875 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_69ff9960-1a26-411d-bbe1-516c94dc8f46/bin/uautomizer/data/82baab350/bc15cbf037844d38b5a1a375a93e4d4f/FLAGd2a69450f [2020-11-30 00:14:58,448 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 00:14:58,449 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_69ff9960-1a26-411d-bbe1-516c94dc8f46/sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound100.c [2020-11-30 00:14:58,458 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_69ff9960-1a26-411d-bbe1-516c94dc8f46/bin/uautomizer/data/82baab350/bc15cbf037844d38b5a1a375a93e4d4f/FLAGd2a69450f [2020-11-30 00:14:58,811 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_69ff9960-1a26-411d-bbe1-516c94dc8f46/bin/uautomizer/data/82baab350/bc15cbf037844d38b5a1a375a93e4d4f [2020-11-30 00:14:58,815 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 00:14:58,819 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 00:14:58,823 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 00:14:58,823 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 00:14:58,827 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 00:14:58,829 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:14:58" (1/1) ... [2020-11-30 00:14:58,834 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68ad7bfd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:14:58, skipping insertion in model container [2020-11-30 00:14:58,835 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:14:58" (1/1) ... [2020-11-30 00:14:58,843 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 00:14:58,862 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 00:14:59,044 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:14:59,060 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 00:14:59,083 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:14:59,108 INFO L208 MainTranslator]: Completed translation [2020-11-30 00:14:59,108 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:14:59 WrapperNode [2020-11-30 00:14:59,109 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 00:14:59,110 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 00:14:59,111 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 00:14:59,111 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 00:14:59,155 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:14:59" (1/1) ... [2020-11-30 00:14:59,192 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:14:59" (1/1) ... [2020-11-30 00:14:59,225 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 00:14:59,227 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 00:14:59,227 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 00:14:59,227 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 00:14:59,236 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:14:59" (1/1) ... [2020-11-30 00:14:59,237 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:14:59" (1/1) ... [2020-11-30 00:14:59,244 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:14:59" (1/1) ... [2020-11-30 00:14:59,245 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:14:59" (1/1) ... [2020-11-30 00:14:59,270 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:14:59" (1/1) ... [2020-11-30 00:14:59,274 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:14:59" (1/1) ... [2020-11-30 00:14:59,277 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:14:59" (1/1) ... [2020-11-30 00:14:59,288 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 00:14:59,289 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 00:14:59,289 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 00:14:59,289 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 00:14:59,290 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:14:59" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_69ff9960-1a26-411d-bbe1-516c94dc8f46/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 [2020-11-30 00:14:59,387 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-30 00:14:59,388 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 00:14:59,388 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 00:14:59,388 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 00:15:04,837 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 00:15:04,837 INFO L298 CfgBuilder]: Removed 13 assume(true) statements. [2020-11-30 00:15:04,839 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:15:04 BoogieIcfgContainer [2020-11-30 00:15:04,840 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 00:15:04,844 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 00:15:04,844 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 00:15:04,848 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 00:15:04,849 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 12:14:58" (1/3) ... [2020-11-30 00:15:04,850 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@424754b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:15:04, skipping insertion in model container [2020-11-30 00:15:04,851 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:14:59" (2/3) ... [2020-11-30 00:15:04,851 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@424754b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:15:04, skipping insertion in model container [2020-11-30 00:15:04,852 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:15:04" (3/3) ... [2020-11-30 00:15:04,855 INFO L111 eAbstractionObserver]: Analyzing ICFG freire1_unwindbound100.c [2020-11-30 00:15:04,874 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 00:15:04,878 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-11-30 00:15:04,902 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-11-30 00:15:04,932 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 00:15:04,932 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 00:15:04,932 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 00:15:04,933 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 00:15:04,933 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 00:15:04,933 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 00:15:04,933 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 00:15:04,934 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 00:15:04,949 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2020-11-30 00:15:04,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-30 00:15:04,956 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:15:04,957 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-30 00:15:04,957 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:15:04,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:15:04,965 INFO L82 PathProgramCache]: Analyzing trace with hash 889571274, now seen corresponding path program 1 times [2020-11-30 00:15:04,980 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 00:15:04,981 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1633761822] [2020-11-30 00:15:04,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_69ff9960-1a26-411d-bbe1-516c94dc8f46/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 [2020-11-30 00:15:08,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:15:08,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-30 00:15:08,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:15:13,073 WARN L193 SmtUtils]: Spent 4.08 s on a formula simplification that was a NOOP. DAG size: 13 [2020-11-30 00:15:22,727 WARN L838 $PredicateComparison]: unable to prove that (or (= (bvadd c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv4294967295 32)) (_ bv0 32)) (and (exists ((ULTIMATE.start_main_~a~0 (_ FloatingPoint 11 53))) (not (= ((_ fp.to_sbv 32) roundTowardZero (fp.add roundNearestTiesToEven (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (fp.sub roundNearestTiesToEven (fp.sub roundNearestTiesToEven .cse0 ULTIMATE.start_main_~a~0) .cse0)) (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (_ bv2 32)) (fp.div roundNearestTiesToEven ULTIMATE.start_main_~a~0 ((_ to_fp 11 53) roundNearestTiesToEven 2.0))))) (_ bv0 32)))) (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32)))) is different from false [2020-11-30 00:15:28,962 WARN L838 $PredicateComparison]: unable to prove that (exists ((ULTIMATE.start_main_~a~0 (_ FloatingPoint 11 53))) (not (= ((_ fp.to_sbv 32) roundTowardZero (fp.add roundNearestTiesToEven (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (fp.sub roundNearestTiesToEven (fp.sub roundNearestTiesToEven .cse0 ULTIMATE.start_main_~a~0) .cse0)) (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (_ bv2 32)) (fp.div roundNearestTiesToEven ULTIMATE.start_main_~a~0 ((_ to_fp 11 53) roundNearestTiesToEven 2.0))))) (_ bv0 32)))) is different from false [2020-11-30 00:15:31,006 WARN L860 $PredicateComparison]: unable to prove that (exists ((ULTIMATE.start_main_~a~0 (_ FloatingPoint 11 53))) (not (= ((_ fp.to_sbv 32) roundTowardZero (fp.add roundNearestTiesToEven (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (fp.sub roundNearestTiesToEven (fp.sub roundNearestTiesToEven .cse0 ULTIMATE.start_main_~a~0) .cse0)) (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (_ bv2 32)) (fp.div roundNearestTiesToEven ULTIMATE.start_main_~a~0 ((_ to_fp 11 53) roundNearestTiesToEven 2.0))))) (_ bv0 32)))) is different from true [2020-11-30 00:15:31,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:15:31,009 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 00:15:33,331 WARN L838 $PredicateComparison]: unable to prove that (= (_ bv0 32) ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) c_ULTIMATE.start_main_~a~0) ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~r~0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) c_ULTIMATE.start_main_~x~0)))) is different from false [2020-11-30 00:15:35,390 WARN L860 $PredicateComparison]: unable to prove that (= (_ bv0 32) ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) c_ULTIMATE.start_main_~a~0) ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~r~0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) c_ULTIMATE.start_main_~x~0)))) is different from true [2020-11-30 00:15:37,455 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_main_~a~0_8 (_ FloatingPoint 11 53))) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode .cse0 v_ULTIMATE.start_main_~a~0_8) .cse0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) (fp.div c_currentRoundingMode v_ULTIMATE.start_main_~a~0_8 ((_ to_fp 11 53) c_currentRoundingMode 2.0))))) (_ bv0 32))) is different from false [2020-11-30 00:15:38,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:15:38,864 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1633761822] [2020-11-30 00:15:38,865 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:15:38,865 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 8 [2020-11-30 00:15:38,866 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757510503] [2020-11-30 00:15:38,870 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-30 00:15:38,871 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 00:15:38,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-30 00:15:38,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=14, Unknown=6, NotChecked=36, Total=72 [2020-11-30 00:15:38,887 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 9 states. [2020-11-30 00:15:41,033 WARN L838 $PredicateComparison]: unable to prove that (and (= c_currentRoundingMode roundNearestTiesToEven) (forall ((v_ULTIMATE.start_main_~a~0_8 (_ FloatingPoint 11 53))) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode .cse0 v_ULTIMATE.start_main_~a~0_8) .cse0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) (fp.div c_currentRoundingMode v_ULTIMATE.start_main_~a~0_8 ((_ to_fp 11 53) c_currentRoundingMode 2.0))))) (_ bv0 32)))) is different from false [2020-11-30 00:15:43,081 WARN L860 $PredicateComparison]: unable to prove that (and (= c_currentRoundingMode roundNearestTiesToEven) (forall ((v_ULTIMATE.start_main_~a~0_8 (_ FloatingPoint 11 53))) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode .cse0 v_ULTIMATE.start_main_~a~0_8) .cse0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) (fp.div c_currentRoundingMode v_ULTIMATE.start_main_~a~0_8 ((_ to_fp 11 53) c_currentRoundingMode 2.0))))) (_ bv0 32)))) is different from true [2020-11-30 00:15:45,475 WARN L860 $PredicateComparison]: unable to prove that (and (= c_ULTIMATE.start_main_~x~0 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~a~0 ((_ to_fp 11 53) c_currentRoundingMode 2.0))) (= (_ bv0 32) ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) c_ULTIMATE.start_main_~a~0) ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~r~0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) c_ULTIMATE.start_main_~x~0)))) (= c_currentRoundingMode roundNearestTiesToEven) (= (_ bv0 32) c_ULTIMATE.start_main_~r~0)) is different from true [2020-11-30 00:15:49,161 WARN L193 SmtUtils]: Spent 3.65 s on a formula simplification. DAG size of input: 27 DAG size of output: 5 [2020-11-30 00:16:02,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:16:02,302 INFO L93 Difference]: Finished difference Result 34 states and 45 transitions. [2020-11-30 00:16:02,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 00:16:02,304 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 6 [2020-11-30 00:16:02,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:16:02,310 INFO L225 Difference]: With dead ends: 34 [2020-11-30 00:16:02,310 INFO L226 Difference]: Without dead ends: 16 [2020-11-30 00:16:02,315 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 28.6s TimeCoverageRelationStatistics Valid=23, Invalid=22, Unknown=9, NotChecked=78, Total=132 [2020-11-30 00:16:02,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-11-30 00:16:02,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 15. [2020-11-30 00:16:02,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-11-30 00:16:02,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2020-11-30 00:16:02,345 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 6 [2020-11-30 00:16:02,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:16:02,347 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2020-11-30 00:16:02,347 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-30 00:16:02,347 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2020-11-30 00:16:02,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-30 00:16:02,347 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:16:02,348 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:16:02,563 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-30 00:16:02,563 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:16:02,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:16:02,564 INFO L82 PathProgramCache]: Analyzing trace with hash 1806863068, now seen corresponding path program 1 times [2020-11-30 00:16:02,564 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 00:16:02,565 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1161259288] [2020-11-30 00:16:02,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_69ff9960-1a26-411d-bbe1-516c94dc8f46/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 [2020-11-30 00:16:02,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:03,008 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-30 00:16:03,009 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:16:03,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:16:03,034 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 00:16:03,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:16:03,068 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1161259288] [2020-11-30 00:16:03,068 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:16:03,068 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2020-11-30 00:16:03,069 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334416616] [2020-11-30 00:16:03,070 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 00:16:03,070 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 00:16:03,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 00:16:03,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-30 00:16:03,072 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand 6 states. [2020-11-30 00:16:06,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:16:06,320 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2020-11-30 00:16:06,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 00:16:06,323 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 7 [2020-11-30 00:16:06,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:16:06,324 INFO L225 Difference]: With dead ends: 19 [2020-11-30 00:16:06,324 INFO L226 Difference]: Without dead ends: 15 [2020-11-30 00:16:06,325 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-11-30 00:16:06,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-11-30 00:16:06,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-11-30 00:16:06,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-11-30 00:16:06,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2020-11-30 00:16:06,329 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 7 [2020-11-30 00:16:06,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:16:06,330 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2020-11-30 00:16:06,330 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 00:16:06,330 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2020-11-30 00:16:06,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-30 00:16:06,330 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:16:06,331 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:16:06,548 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-30 00:16:06,549 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:16:06,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:16:06,550 INFO L82 PathProgramCache]: Analyzing trace with hash 1275448533, now seen corresponding path program 1 times [2020-11-30 00:16:06,553 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 00:16:06,554 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1747093813] [2020-11-30 00:16:06,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_69ff9960-1a26-411d-bbe1-516c94dc8f46/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 [2020-11-30 00:16:06,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:06,991 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-30 00:16:06,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:16:09,076 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (= (_ bv0 32) ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) c_ULTIMATE.start_main_~a~0) ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~r~0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) c_ULTIMATE.start_main_~x~0)))))) (or (and (not .cse0) (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32))) (and .cse0 (= (bvadd c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv4294967295 32)) (_ bv0 32))))) is different from false [2020-11-30 00:16:11,147 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 (= (_ bv0 32) ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) c_ULTIMATE.start_main_~a~0) ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~r~0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) c_ULTIMATE.start_main_~x~0)))))) (or (and (not .cse0) (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32))) (and .cse0 (= (bvadd c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv4294967295 32)) (_ bv0 32))))) is different from true [2020-11-30 00:16:11,160 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-30 00:16:11,161 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 00:16:13,263 WARN L838 $PredicateComparison]: unable to prove that (= (_ bv0 32) ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) c_ULTIMATE.start_main_~a~0) ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~r~0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) c_ULTIMATE.start_main_~x~0)))) is different from false [2020-11-30 00:16:15,334 WARN L860 $PredicateComparison]: unable to prove that (= (_ bv0 32) ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) c_ULTIMATE.start_main_~a~0) ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~r~0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) c_ULTIMATE.start_main_~x~0)))) is different from true [2020-11-30 00:16:15,349 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 00:16:21,607 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((ULTIMATE.start_main_~a~0 (_ FloatingPoint 11 53)) (ULTIMATE.start_main_~x~0 (_ FloatingPoint 11 53)) (currentRoundingMode RoundingMode) (ULTIMATE.start_main_~r~0 (_ BitVec 32))) (= (_ bv0 32) ((_ fp.to_sbv 32) roundTowardZero (fp.add currentRoundingMode (fp.sub currentRoundingMode (fp.sub currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (bvmul ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~r~0)) ULTIMATE.start_main_~a~0) ((_ to_fp 11 53) currentRoundingMode ULTIMATE.start_main_~r~0)) (fp.mul currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (_ bv2 32)) ULTIMATE.start_main_~x~0))))) (= (bvadd c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv4294967295 32)) (_ bv0 32))) is different from false [2020-11-30 00:16:21,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:16:21,617 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 00:16:25,501 WARN L860 $PredicateComparison]: unable to prove that (or (= (_ bv0 32) ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) c_ULTIMATE.start_main_~a~0) ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~r~0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) c_ULTIMATE.start_main_~x~0)))) (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32))) is different from true [2020-11-30 00:16:25,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:16:25,541 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1747093813] [2020-11-30 00:16:25,541 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:16:25,541 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2020-11-30 00:16:25,542 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506007004] [2020-11-30 00:16:25,542 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-30 00:16:25,542 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 00:16:25,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-30 00:16:25,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=5, Unknown=6, NotChecked=20, Total=42 [2020-11-30 00:16:25,543 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand 7 states. [2020-11-30 00:16:29,826 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (= (_ bv0 32) ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) c_ULTIMATE.start_main_~a~0) ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~r~0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) c_ULTIMATE.start_main_~x~0))))) (.cse1 (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32)))) (and (or (and (not .cse0) .cse1) (and .cse0 (= (bvadd c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv4294967295 32)) (_ bv0 32)))) (or .cse0 .cse1))) is different from false [2020-11-30 00:16:31,894 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 (= (_ bv0 32) ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) c_ULTIMATE.start_main_~a~0) ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~r~0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) c_ULTIMATE.start_main_~x~0))))) (.cse1 (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32)))) (and (or (and (not .cse0) .cse1) (and .cse0 (= (bvadd c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv4294967295 32)) (_ bv0 32)))) (or .cse0 .cse1))) is different from true [2020-11-30 00:16:33,972 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((ULTIMATE.start_main_~a~0 (_ FloatingPoint 11 53)) (ULTIMATE.start_main_~x~0 (_ FloatingPoint 11 53)) (currentRoundingMode RoundingMode) (ULTIMATE.start_main_~r~0 (_ BitVec 32))) (= (_ bv0 32) ((_ fp.to_sbv 32) roundTowardZero (fp.add currentRoundingMode (fp.sub currentRoundingMode (fp.sub currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (bvmul ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~r~0)) ULTIMATE.start_main_~a~0) ((_ to_fp 11 53) currentRoundingMode ULTIMATE.start_main_~r~0)) (fp.mul currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (_ bv2 32)) ULTIMATE.start_main_~x~0))))) (not (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32))) (= (bvadd c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv4294967295 32)) (_ bv0 32))) is different from false [2020-11-30 00:16:36,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:16:36,180 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2020-11-30 00:16:36,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-30 00:16:36,195 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 9 [2020-11-30 00:16:36,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:16:36,195 INFO L225 Difference]: With dead ends: 19 [2020-11-30 00:16:36,196 INFO L226 Difference]: Without dead ends: 15 [2020-11-30 00:16:36,196 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 20.5s TimeCoverageRelationStatistics Valid=15, Invalid=6, Unknown=9, NotChecked=42, Total=72 [2020-11-30 00:16:36,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-11-30 00:16:36,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-11-30 00:16:36,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-11-30 00:16:36,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2020-11-30 00:16:36,200 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 9 [2020-11-30 00:16:36,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:16:36,200 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2020-11-30 00:16:36,200 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-30 00:16:36,201 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2020-11-30 00:16:36,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-30 00:16:36,201 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:16:36,201 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2020-11-30 00:16:36,402 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-30 00:16:36,402 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:16:36,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:16:36,403 INFO L82 PathProgramCache]: Analyzing trace with hash 885278358, now seen corresponding path program 1 times [2020-11-30 00:16:36,403 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 00:16:36,404 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1229015095] [2020-11-30 00:16:36,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_69ff9960-1a26-411d-bbe1-516c94dc8f46/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 [2020-11-30 00:16:49,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:16:49,274 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:17:00,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:17:00,079 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:17:00,183 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-11-30 00:17:00,183 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-30 00:17:00,384 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-11-30 00:17:00,415 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 12:17:00 BoogieIcfgContainer [2020-11-30 00:17:00,415 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 00:17:00,416 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 00:17:00,416 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 00:17:00,416 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 00:17:00,417 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:15:04" (3/4) ... [2020-11-30 00:17:00,419 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-30 00:17:00,480 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_69ff9960-1a26-411d-bbe1-516c94dc8f46/bin/uautomizer/witness.graphml [2020-11-30 00:17:00,480 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 00:17:00,482 INFO L168 Benchmark]: Toolchain (without parser) took 121662.64 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 32.7 MB in the beginning and 42.7 MB in the end (delta: -9.9 MB). Peak memory consumption was 3.0 MB. Max. memory is 16.1 GB. [2020-11-30 00:17:00,483 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 54.5 MB. Free memory was 36.3 MB in the beginning and 36.2 MB in the end (delta: 73.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:17:00,483 INFO L168 Benchmark]: CACSL2BoogieTranslator took 286.76 ms. Allocated memory is still 54.5 MB. Free memory was 32.6 MB in the beginning and 22.4 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-30 00:17:00,484 INFO L168 Benchmark]: Boogie Procedure Inliner took 114.75 ms. Allocated memory is still 54.5 MB. Free memory was 22.2 MB in the beginning and 37.3 MB in the end (delta: -15.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-30 00:17:00,484 INFO L168 Benchmark]: Boogie Preprocessor took 61.38 ms. Allocated memory is still 54.5 MB. Free memory was 37.3 MB in the beginning and 36.0 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:17:00,485 INFO L168 Benchmark]: RCFGBuilder took 5551.02 ms. Allocated memory is still 54.5 MB. Free memory was 36.0 MB in the beginning and 23.6 MB in the end (delta: 12.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-30 00:17:00,486 INFO L168 Benchmark]: TraceAbstraction took 115571.40 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 23.2 MB in the beginning and 44.8 MB in the end (delta: -21.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:17:00,488 INFO L168 Benchmark]: Witness Printer took 64.19 ms. Allocated memory is still 67.1 MB. Free memory was 44.4 MB in the beginning and 42.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:17:00,491 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 54.5 MB. Free memory was 36.3 MB in the beginning and 36.2 MB in the end (delta: 73.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 286.76 ms. Allocated memory is still 54.5 MB. Free memory was 32.6 MB in the beginning and 22.4 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 114.75 ms. Allocated memory is still 54.5 MB. Free memory was 22.2 MB in the beginning and 37.3 MB in the end (delta: -15.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 61.38 ms. Allocated memory is still 54.5 MB. Free memory was 37.3 MB in the beginning and 36.0 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 5551.02 ms. Allocated memory is still 54.5 MB. Free memory was 36.0 MB in the beginning and 23.6 MB in the end (delta: 12.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 115571.40 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 23.2 MB in the beginning and 44.8 MB in the end (delta: -21.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 64.19 ms. Allocated memory is still 67.1 MB. Free memory was 44.4 MB in the beginning and 42.7 MB in the end (delta: 1.7 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: [L24] int counter = 0; VAL [counter=0] [L26] int r; [L27] double a, x; [L28] a = __VERIFIER_nondet_double() [L29] x = a / 2.0 [L30] r = 0 VAL [counter=0] [L32] EXPR counter++ VAL [counter=1] [L32] COND TRUE counter++<100 [L17] COND FALSE !(!(cond)) VAL [counter=1] [L35] COND FALSE !(!(x > r)) [L37] x = x - r [L38] r = r + 1 VAL [counter=1] [L32] EXPR counter++ VAL [counter=2] [L32] COND TRUE counter++<100 [L17] COND TRUE !(cond) VAL [counter=2] [L10] __assert_fail("0", "freire1.c", 10, "reach_error") VAL [counter=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 115.4s, OverallIterations: 4, TraceHistogramMax: 2, AutomataDifference: 37.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 38 SDtfs, 8 SDslu, 70 SDs, 0 SdLazy, 17 SolverSat, 3 SolverUnsat, 9 SolverUnknown, 0 SolverNotchecked, 20.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 44 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 12 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 49.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred 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, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 17.0s SatisfiabilityAnalysisTime, 48.9s InterpolantComputationTime, 32 NumberOfCodeBlocks, 32 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 38 ConstructedInterpolants, 4 QuantifiedInterpolants, 2959 SizeOfPredicates, 18 NumberOfNonLiveVariables, 103 ConjunctsInSsa, 15 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...