./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/divbin2_valuebound20.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 69874e26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_5f5a3108-32be-4c62-a55d-3327b09b7577/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_5f5a3108-32be-4c62-a55d-3327b09b7577/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_5f5a3108-32be-4c62-a55d-3327b09b7577/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_5f5a3108-32be-4c62-a55d-3327b09b7577/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/divbin2_valuebound20.i -s /tmp/vcloud-vcloud-master/worker/run_dir_5f5a3108-32be-4c62-a55d-3327b09b7577/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_5f5a3108-32be-4c62-a55d-3327b09b7577/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 ca5b2e062351979cc30531f22e2f0306ecbb7c02 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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_5f5a3108-32be-4c62-a55d-3327b09b7577/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_5f5a3108-32be-4c62-a55d-3327b09b7577/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_5f5a3108-32be-4c62-a55d-3327b09b7577/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_5f5a3108-32be-4c62-a55d-3327b09b7577/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/divbin2_valuebound20.i -s /tmp/vcloud-vcloud-master/worker/run_dir_5f5a3108-32be-4c62-a55d-3327b09b7577/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_5f5a3108-32be-4c62-a55d-3327b09b7577/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 ca5b2e062351979cc30531f22e2f0306ecbb7c02 ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-69874e2 [2020-12-01 15:32:41,095 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-01 15:32:41,116 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-01 15:32:41,157 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-01 15:32:41,158 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-01 15:32:41,159 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-01 15:32:41,161 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-01 15:32:41,164 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-01 15:32:41,167 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-01 15:32:41,168 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-01 15:32:41,169 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-01 15:32:41,171 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-01 15:32:41,171 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-01 15:32:41,173 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-01 15:32:41,174 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-01 15:32:41,175 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-01 15:32:41,177 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-01 15:32:41,178 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-01 15:32:41,180 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-01 15:32:41,182 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-01 15:32:41,184 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-01 15:32:41,186 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-01 15:32:41,187 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-01 15:32:41,188 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-01 15:32:41,192 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-01 15:32:41,192 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-01 15:32:41,193 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-01 15:32:41,194 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-01 15:32:41,194 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-01 15:32:41,196 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-01 15:32:41,196 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-01 15:32:41,197 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-01 15:32:41,198 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-01 15:32:41,199 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-01 15:32:41,200 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-01 15:32:41,201 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-01 15:32:41,201 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-01 15:32:41,202 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-01 15:32:41,202 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-01 15:32:41,203 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-01 15:32:41,204 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-01 15:32:41,205 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_5f5a3108-32be-4c62-a55d-3327b09b7577/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-12-01 15:32:41,229 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-01 15:32:41,229 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-01 15:32:41,231 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-01 15:32:41,231 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-01 15:32:41,232 INFO L138 SettingsManager]: * Use SBE=true [2020-12-01 15:32:41,232 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-01 15:32:41,233 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-01 15:32:41,233 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-01 15:32:41,233 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-01 15:32:41,234 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-01 15:32:41,234 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-01 15:32:41,235 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-01 15:32:41,235 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-01 15:32:41,235 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-01 15:32:41,236 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-01 15:32:41,236 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-01 15:32:41,236 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-01 15:32:41,237 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-01 15:32:41,237 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-01 15:32:41,238 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-01 15:32:41,238 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-01 15:32:41,238 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-01 15:32:41,239 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-01 15:32:41,239 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-01 15:32:41,240 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-01 15:32:41,240 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-01 15:32:41,240 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-01 15:32:41,241 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-01 15:32:41,241 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-01 15:32:41,241 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_5f5a3108-32be-4c62-a55d-3327b09b7577/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_5f5a3108-32be-4c62-a55d-3327b09b7577/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ca5b2e062351979cc30531f22e2f0306ecbb7c02 [2020-12-01 15:32:41,467 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-01 15:32:41,506 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-01 15:32:41,509 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-01 15:32:41,510 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-01 15:32:41,512 INFO L275 PluginConnector]: CDTParser initialized [2020-12-01 15:32:41,513 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_5f5a3108-32be-4c62-a55d-3327b09b7577/bin/uautomizer/../../sv-benchmarks/c/nla-digbench-scaling/divbin2_valuebound20.i [2020-12-01 15:32:41,584 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_5f5a3108-32be-4c62-a55d-3327b09b7577/bin/uautomizer/data/4c2982435/8a8c7055256742a49b0ddc2a75bd9d97/FLAG7273e99b9 [2020-12-01 15:32:42,058 INFO L306 CDTParser]: Found 1 translation units. [2020-12-01 15:32:42,058 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_5f5a3108-32be-4c62-a55d-3327b09b7577/sv-benchmarks/c/nla-digbench-scaling/divbin2_valuebound20.i [2020-12-01 15:32:42,076 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_5f5a3108-32be-4c62-a55d-3327b09b7577/bin/uautomizer/data/4c2982435/8a8c7055256742a49b0ddc2a75bd9d97/FLAG7273e99b9 [2020-12-01 15:32:42,422 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_5f5a3108-32be-4c62-a55d-3327b09b7577/bin/uautomizer/data/4c2982435/8a8c7055256742a49b0ddc2a75bd9d97 [2020-12-01 15:32:42,425 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-01 15:32:42,426 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-01 15:32:42,428 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-01 15:32:42,440 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-01 15:32:42,443 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-01 15:32:42,445 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 03:32:42" (1/1) ... [2020-12-01 15:32:42,447 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f49642d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:32:42, skipping insertion in model container [2020-12-01 15:32:42,448 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 03:32:42" (1/1) ... [2020-12-01 15:32:42,453 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-01 15:32:42,467 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-01 15:32:42,673 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 15:32:42,681 INFO L203 MainTranslator]: Completed pre-run [2020-12-01 15:32:42,700 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 15:32:42,723 INFO L208 MainTranslator]: Completed translation [2020-12-01 15:32:42,725 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:32:42 WrapperNode [2020-12-01 15:32:42,725 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-01 15:32:42,728 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-01 15:32:42,728 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-01 15:32:42,728 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-01 15:32:42,738 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:32:42" (1/1) ... [2020-12-01 15:32:42,750 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:32:42" (1/1) ... [2020-12-01 15:32:42,778 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-01 15:32:42,779 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-01 15:32:42,780 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-01 15:32:42,780 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-01 15:32:42,789 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:32:42" (1/1) ... [2020-12-01 15:32:42,789 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:32:42" (1/1) ... [2020-12-01 15:32:42,803 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:32:42" (1/1) ... [2020-12-01 15:32:42,804 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:32:42" (1/1) ... [2020-12-01 15:32:42,808 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:32:42" (1/1) ... [2020-12-01 15:32:42,817 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:32:42" (1/1) ... [2020-12-01 15:32:42,819 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:32:42" (1/1) ... [2020-12-01 15:32:42,822 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-01 15:32:42,829 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-01 15:32:42,829 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-01 15:32:42,829 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-01 15:32:42,830 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:32:42" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5f5a3108-32be-4c62-a55d-3327b09b7577/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 [2020-12-01 15:32:42,908 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-01 15:32:42,909 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-01 15:32:42,909 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-01 15:32:42,910 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-01 15:32:43,140 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-01 15:32:43,140 INFO L298 CfgBuilder]: Removed 16 assume(true) statements. [2020-12-01 15:32:43,142 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:32:43 BoogieIcfgContainer [2020-12-01 15:32:43,142 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-01 15:32:43,144 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-01 15:32:43,144 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-01 15:32:43,148 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-01 15:32:43,148 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.12 03:32:42" (1/3) ... [2020-12-01 15:32:43,149 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39c3f147 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 03:32:43, skipping insertion in model container [2020-12-01 15:32:43,149 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:32:42" (2/3) ... [2020-12-01 15:32:43,150 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39c3f147 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 03:32:43, skipping insertion in model container [2020-12-01 15:32:43,150 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:32:43" (3/3) ... [2020-12-01 15:32:43,152 INFO L111 eAbstractionObserver]: Analyzing ICFG divbin2_valuebound20.i [2020-12-01 15:32:43,166 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-01 15:32:43,169 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-12-01 15:32:43,181 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-12-01 15:32:43,206 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-01 15:32:43,207 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-01 15:32:43,207 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-01 15:32:43,207 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-01 15:32:43,207 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-01 15:32:43,207 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-01 15:32:43,208 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-01 15:32:43,208 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-01 15:32:43,221 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2020-12-01 15:32:43,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-01 15:32:43,226 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:32:43,227 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:32:43,227 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:32:43,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:32:43,233 INFO L82 PathProgramCache]: Analyzing trace with hash -1104570084, now seen corresponding path program 1 times [2020-12-01 15:32:43,242 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:32:43,243 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162660804] [2020-12-01 15:32:43,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:32:43,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:32:43,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:32:43,444 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162660804] [2020-12-01 15:32:43,445 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:32:43,445 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-01 15:32:43,446 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525674334] [2020-12-01 15:32:43,450 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-01 15:32:43,451 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:32:43,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-01 15:32:43,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-01 15:32:43,466 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 2 states. [2020-12-01 15:32:43,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:32:43,482 INFO L93 Difference]: Finished difference Result 45 states and 66 transitions. [2020-12-01 15:32:43,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-01 15:32:43,484 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-12-01 15:32:43,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:32:43,491 INFO L225 Difference]: With dead ends: 45 [2020-12-01 15:32:43,492 INFO L226 Difference]: Without dead ends: 20 [2020-12-01 15:32:43,494 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-01 15:32:43,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-12-01 15:32:43,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2020-12-01 15:32:43,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-12-01 15:32:43,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2020-12-01 15:32:43,546 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 10 [2020-12-01 15:32:43,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:32:43,546 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2020-12-01 15:32:43,546 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-01 15:32:43,547 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2020-12-01 15:32:43,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-01 15:32:43,547 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:32:43,547 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:32:43,548 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-01 15:32:43,548 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:32:43,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:32:43,549 INFO L82 PathProgramCache]: Analyzing trace with hash -2096849699, now seen corresponding path program 1 times [2020-12-01 15:32:43,549 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:32:43,550 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962875289] [2020-12-01 15:32:43,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:32:43,572 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 15:32:43,573 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1465147778] [2020-12-01 15:32:43,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5f5a3108-32be-4c62-a55d-3327b09b7577/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 15:32:43,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:32:43,690 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 22 conjunts are in the unsatisfiable core [2020-12-01 15:32:43,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:32:43,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:32:43,926 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962875289] [2020-12-01 15:32:43,927 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 15:32:43,927 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1465147778] [2020-12-01 15:32:43,927 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:32:43,927 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-01 15:32:43,928 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679686784] [2020-12-01 15:32:43,929 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-01 15:32:43,929 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:32:43,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-01 15:32:43,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-12-01 15:32:43,931 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand 7 states. [2020-12-01 15:32:44,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:32:44,192 INFO L93 Difference]: Finished difference Result 37 states and 41 transitions. [2020-12-01 15:32:44,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-01 15:32:44,193 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 11 [2020-12-01 15:32:44,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:32:44,194 INFO L225 Difference]: With dead ends: 37 [2020-12-01 15:32:44,195 INFO L226 Difference]: Without dead ends: 27 [2020-12-01 15:32:44,196 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2020-12-01 15:32:44,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-12-01 15:32:44,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2020-12-01 15:32:44,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-12-01 15:32:44,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2020-12-01 15:32:44,202 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 11 [2020-12-01 15:32:44,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:32:44,202 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2020-12-01 15:32:44,203 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-01 15:32:44,203 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2020-12-01 15:32:44,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-01 15:32:44,203 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:32:44,204 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:32:44,425 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-12-01 15:32:44,425 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:32:44,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:32:44,426 INFO L82 PathProgramCache]: Analyzing trace with hash 974667832, now seen corresponding path program 1 times [2020-12-01 15:32:44,426 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:32:44,426 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246369649] [2020-12-01 15:32:44,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:32:44,443 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 15:32:44,443 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1823913204] [2020-12-01 15:32:44,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5f5a3108-32be-4c62-a55d-3327b09b7577/bin/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 15:32:44,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:32:44,517 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 22 conjunts are in the unsatisfiable core [2020-12-01 15:32:44,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:32:44,665 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:32:44,665 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246369649] [2020-12-01 15:32:44,665 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 15:32:44,665 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1823913204] [2020-12-01 15:32:44,666 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-01 15:32:44,666 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-01 15:32:44,667 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846975085] [2020-12-01 15:32:44,667 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-01 15:32:44,668 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:32:44,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-01 15:32:44,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-12-01 15:32:44,676 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand 7 states. [2020-12-01 15:32:44,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:32:44,952 INFO L93 Difference]: Finished difference Result 42 states and 47 transitions. [2020-12-01 15:32:44,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-01 15:32:44,952 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2020-12-01 15:32:44,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:32:44,953 INFO L225 Difference]: With dead ends: 42 [2020-12-01 15:32:44,953 INFO L226 Difference]: Without dead ends: 32 [2020-12-01 15:32:44,954 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2020-12-01 15:32:44,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-12-01 15:32:44,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 29. [2020-12-01 15:32:44,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-12-01 15:32:44,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2020-12-01 15:32:44,960 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 13 [2020-12-01 15:32:44,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:32:44,960 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2020-12-01 15:32:44,960 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-01 15:32:44,961 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2020-12-01 15:32:44,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-01 15:32:44,961 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:32:44,961 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:32:45,168 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 15:32:45,169 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:32:45,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:32:45,170 INFO L82 PathProgramCache]: Analyzing trace with hash 2120747147, now seen corresponding path program 1 times [2020-12-01 15:32:45,170 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:32:45,170 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305093067] [2020-12-01 15:32:45,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:32:45,187 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 15:32:45,187 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1059632614] [2020-12-01 15:32:45,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5f5a3108-32be-4c62-a55d-3327b09b7577/bin/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 15:32:45,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:32:45,227 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-01 15:32:45,228 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:32:45,249 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:32:45,249 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305093067] [2020-12-01 15:32:45,249 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 15:32:45,249 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1059632614] [2020-12-01 15:32:45,250 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:32:45,250 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-01 15:32:45,250 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762695902] [2020-12-01 15:32:45,250 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-01 15:32:45,251 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:32:45,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-01 15:32:45,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-01 15:32:45,252 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand 3 states. [2020-12-01 15:32:45,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:32:45,274 INFO L93 Difference]: Finished difference Result 43 states and 48 transitions. [2020-12-01 15:32:45,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-01 15:32:45,275 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2020-12-01 15:32:45,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:32:45,276 INFO L225 Difference]: With dead ends: 43 [2020-12-01 15:32:45,276 INFO L226 Difference]: Without dead ends: 26 [2020-12-01 15:32:45,277 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-01 15:32:45,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-12-01 15:32:45,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-12-01 15:32:45,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-12-01 15:32:45,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2020-12-01 15:32:45,281 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 15 [2020-12-01 15:32:45,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:32:45,282 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2020-12-01 15:32:45,282 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-01 15:32:45,282 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2020-12-01 15:32:45,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-01 15:32:45,283 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:32:45,283 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:32:45,509 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 15:32:45,509 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:32:45,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:32:45,509 INFO L82 PathProgramCache]: Analyzing trace with hash 1911850598, now seen corresponding path program 1 times [2020-12-01 15:32:45,510 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:32:45,510 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388956943] [2020-12-01 15:32:45,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:32:45,537 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 15:32:45,537 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2085800885] [2020-12-01 15:32:45,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5f5a3108-32be-4c62-a55d-3327b09b7577/bin/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 15:32:45,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:32:45,606 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 32 conjunts are in the unsatisfiable core [2020-12-01 15:32:45,609 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:32:45,789 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:32:45,789 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388956943] [2020-12-01 15:32:45,790 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 15:32:45,790 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2085800885] [2020-12-01 15:32:45,790 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-01 15:32:45,790 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-12-01 15:32:45,790 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614219580] [2020-12-01 15:32:45,791 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-01 15:32:45,791 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:32:45,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-01 15:32:45,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-12-01 15:32:45,792 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand 10 states. [2020-12-01 15:32:46,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:32:46,306 INFO L93 Difference]: Finished difference Result 52 states and 59 transitions. [2020-12-01 15:32:46,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-01 15:32:46,306 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2020-12-01 15:32:46,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:32:46,311 INFO L225 Difference]: With dead ends: 52 [2020-12-01 15:32:46,311 INFO L226 Difference]: Without dead ends: 42 [2020-12-01 15:32:46,312 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2020-12-01 15:32:46,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-12-01 15:32:46,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 35. [2020-12-01 15:32:46,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-12-01 15:32:46,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 40 transitions. [2020-12-01 15:32:46,333 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 40 transitions. Word has length 17 [2020-12-01 15:32:46,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:32:46,334 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 40 transitions. [2020-12-01 15:32:46,334 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-01 15:32:46,334 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 40 transitions. [2020-12-01 15:32:46,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-01 15:32:46,336 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:32:46,336 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:32:46,541 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 15:32:46,541 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:32:46,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:32:46,541 INFO L82 PathProgramCache]: Analyzing trace with hash -1269237375, now seen corresponding path program 2 times [2020-12-01 15:32:46,542 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:32:46,542 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827449321] [2020-12-01 15:32:46,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:32:46,555 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 15:32:46,556 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [78961840] [2020-12-01 15:32:46,556 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5f5a3108-32be-4c62-a55d-3327b09b7577/bin/uautomizer/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 15:32:46,635 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-01 15:32:46,636 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-01 15:32:46,637 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 30 conjunts are in the unsatisfiable core [2020-12-01 15:32:46,639 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:32:46,904 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-01 15:32:46,908 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827449321] [2020-12-01 15:32:46,908 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 15:32:46,909 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [78961840] [2020-12-01 15:32:46,909 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-01 15:32:46,909 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-01 15:32:46,909 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835272919] [2020-12-01 15:32:46,910 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-01 15:32:46,911 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:32:46,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-01 15:32:46,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-12-01 15:32:46,917 INFO L87 Difference]: Start difference. First operand 35 states and 40 transitions. Second operand 8 states. [2020-12-01 15:32:47,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:32:47,160 INFO L93 Difference]: Finished difference Result 51 states and 57 transitions. [2020-12-01 15:32:47,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-01 15:32:47,162 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-12-01 15:32:47,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:32:47,162 INFO L225 Difference]: With dead ends: 51 [2020-12-01 15:32:47,163 INFO L226 Difference]: Without dead ends: 41 [2020-12-01 15:32:47,165 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-12-01 15:32:47,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-12-01 15:32:47,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 29. [2020-12-01 15:32:47,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-12-01 15:32:47,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2020-12-01 15:32:47,178 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 19 [2020-12-01 15:32:47,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:32:47,179 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2020-12-01 15:32:47,179 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-01 15:32:47,179 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2020-12-01 15:32:47,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-12-01 15:32:47,180 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:32:47,180 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:32:47,405 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-12-01 15:32:47,405 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:32:47,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:32:47,405 INFO L82 PathProgramCache]: Analyzing trace with hash 952501652, now seen corresponding path program 3 times [2020-12-01 15:32:47,405 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:32:47,405 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941873771] [2020-12-01 15:32:47,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:32:47,431 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 15:32:47,431 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1191564885] [2020-12-01 15:32:47,431 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5f5a3108-32be-4c62-a55d-3327b09b7577/bin/uautomizer/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 15:32:47,521 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-12-01 15:32:47,521 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-01 15:32:47,522 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 13 conjunts are in the unsatisfiable core [2020-12-01 15:32:47,523 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:32:47,721 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:32:47,721 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941873771] [2020-12-01 15:32:47,721 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 15:32:47,721 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1191564885] [2020-12-01 15:32:47,721 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-01 15:32:47,722 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-12-01 15:32:47,722 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342270789] [2020-12-01 15:32:47,722 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-01 15:32:47,722 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:32:47,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-01 15:32:47,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-01 15:32:47,723 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand 6 states. [2020-12-01 15:32:47,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:32:47,785 INFO L93 Difference]: Finished difference Result 59 states and 66 transitions. [2020-12-01 15:32:47,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-01 15:32:47,785 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 21 [2020-12-01 15:32:47,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:32:47,788 INFO L225 Difference]: With dead ends: 59 [2020-12-01 15:32:47,788 INFO L226 Difference]: Without dead ends: 31 [2020-12-01 15:32:47,789 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-01 15:32:47,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-12-01 15:32:47,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-12-01 15:32:47,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-12-01 15:32:47,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2020-12-01 15:32:47,799 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 21 [2020-12-01 15:32:47,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:32:47,799 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2020-12-01 15:32:47,799 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-01 15:32:47,799 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2020-12-01 15:32:47,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-01 15:32:47,800 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:32:47,800 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:32:48,017 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 15:32:48,017 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:32:48,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:32:48,017 INFO L82 PathProgramCache]: Analyzing trace with hash -13274321, now seen corresponding path program 4 times [2020-12-01 15:32:48,017 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:32:48,017 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077733784] [2020-12-01 15:32:48,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:32:48,037 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 15:32:48,037 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1609883855] [2020-12-01 15:32:48,037 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5f5a3108-32be-4c62-a55d-3327b09b7577/bin/uautomizer/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 15:32:48,265 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-01 15:32:48,266 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-01 15:32:48,268 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 43 conjunts are in the unsatisfiable core [2020-12-01 15:32:48,270 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:32:48,709 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:32:48,710 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077733784] [2020-12-01 15:32:48,710 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 15:32:48,711 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1609883855] [2020-12-01 15:32:48,711 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-01 15:32:48,711 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-12-01 15:32:48,712 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87317614] [2020-12-01 15:32:48,712 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-01 15:32:48,712 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:32:48,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-01 15:32:48,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2020-12-01 15:32:48,714 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand 13 states. [2020-12-01 15:32:49,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:32:49,582 INFO L93 Difference]: Finished difference Result 74 states and 87 transitions. [2020-12-01 15:32:49,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-01 15:32:49,583 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 23 [2020-12-01 15:32:49,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:32:49,584 INFO L225 Difference]: With dead ends: 74 [2020-12-01 15:32:49,584 INFO L226 Difference]: Without dead ends: 49 [2020-12-01 15:32:49,585 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=114, Invalid=438, Unknown=0, NotChecked=0, Total=552 [2020-12-01 15:32:49,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-12-01 15:32:49,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 41. [2020-12-01 15:32:49,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-12-01 15:32:49,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 46 transitions. [2020-12-01 15:32:49,591 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 46 transitions. Word has length 23 [2020-12-01 15:32:49,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:32:49,592 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 46 transitions. [2020-12-01 15:32:49,592 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-12-01 15:32:49,592 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 46 transitions. [2020-12-01 15:32:49,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-12-01 15:32:49,593 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:32:49,593 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:32:49,796 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 15:32:49,797 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:32:49,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:32:49,799 INFO L82 PathProgramCache]: Analyzing trace with hash -411048438, now seen corresponding path program 5 times [2020-12-01 15:32:49,799 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:32:49,799 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34654405] [2020-12-01 15:32:49,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:32:49,811 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 15:32:49,811 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1487051418] [2020-12-01 15:32:49,811 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5f5a3108-32be-4c62-a55d-3327b09b7577/bin/uautomizer/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 15:32:50,575 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2020-12-01 15:32:50,575 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-01 15:32:50,579 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 41 conjunts are in the unsatisfiable core [2020-12-01 15:32:50,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:32:50,945 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:32:50,946 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34654405] [2020-12-01 15:32:50,946 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 15:32:50,946 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1487051418] [2020-12-01 15:32:50,946 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-01 15:32:50,947 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-12-01 15:32:50,953 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156340076] [2020-12-01 15:32:50,955 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-12-01 15:32:50,955 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:32:50,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-12-01 15:32:50,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2020-12-01 15:32:50,956 INFO L87 Difference]: Start difference. First operand 41 states and 46 transitions. Second operand 14 states. [2020-12-01 15:32:51,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:32:51,986 INFO L93 Difference]: Finished difference Result 85 states and 99 transitions. [2020-12-01 15:32:51,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-12-01 15:32:51,987 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 25 [2020-12-01 15:32:51,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:32:51,988 INFO L225 Difference]: With dead ends: 85 [2020-12-01 15:32:51,988 INFO L226 Difference]: Without dead ends: 73 [2020-12-01 15:32:51,989 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=150, Invalid=662, Unknown=0, NotChecked=0, Total=812 [2020-12-01 15:32:51,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-12-01 15:32:51,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 47. [2020-12-01 15:32:51,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-12-01 15:32:51,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 54 transitions. [2020-12-01 15:32:51,996 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 54 transitions. Word has length 25 [2020-12-01 15:32:51,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:32:51,997 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 54 transitions. [2020-12-01 15:32:51,997 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-12-01 15:32:51,997 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 54 transitions. [2020-12-01 15:32:51,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-01 15:32:51,998 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:32:51,998 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:32:52,205 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2020-12-01 15:32:52,205 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:32:52,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:32:52,206 INFO L82 PathProgramCache]: Analyzing trace with hash 784426461, now seen corresponding path program 6 times [2020-12-01 15:32:52,206 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:32:52,206 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869903872] [2020-12-01 15:32:52,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:32:52,219 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 15:32:52,225 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [124949151] [2020-12-01 15:32:52,226 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5f5a3108-32be-4c62-a55d-3327b09b7577/bin/uautomizer/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 15:32:52,426 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2020-12-01 15:32:52,427 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-01 15:32:52,428 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 21 conjunts are in the unsatisfiable core [2020-12-01 15:32:52,430 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:32:52,578 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 8 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:32:52,579 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869903872] [2020-12-01 15:32:52,579 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 15:32:52,579 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [124949151] [2020-12-01 15:32:52,580 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-01 15:32:52,580 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-01 15:32:52,580 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64888383] [2020-12-01 15:32:52,581 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-01 15:32:52,581 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:32:52,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-01 15:32:52,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-12-01 15:32:52,582 INFO L87 Difference]: Start difference. First operand 47 states and 54 transitions. Second operand 7 states. [2020-12-01 15:32:52,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:32:52,674 INFO L93 Difference]: Finished difference Result 68 states and 77 transitions. [2020-12-01 15:32:52,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-01 15:32:52,675 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 27 [2020-12-01 15:32:52,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:32:52,676 INFO L225 Difference]: With dead ends: 68 [2020-12-01 15:32:52,676 INFO L226 Difference]: Without dead ends: 43 [2020-12-01 15:32:52,677 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-12-01 15:32:52,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-12-01 15:32:52,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2020-12-01 15:32:52,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-12-01 15:32:52,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 49 transitions. [2020-12-01 15:32:52,686 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 49 transitions. Word has length 27 [2020-12-01 15:32:52,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:32:52,687 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 49 transitions. [2020-12-01 15:32:52,687 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-01 15:32:52,687 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 49 transitions. [2020-12-01 15:32:52,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-01 15:32:52,691 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:32:52,691 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:32:52,895 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 15:32:52,896 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:32:52,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:32:52,896 INFO L82 PathProgramCache]: Analyzing trace with hash -419885531, now seen corresponding path program 7 times [2020-12-01 15:32:52,896 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:32:52,897 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126217397] [2020-12-01 15:32:52,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:32:52,925 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 15:32:52,927 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [108247550] [2020-12-01 15:32:52,928 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5f5a3108-32be-4c62-a55d-3327b09b7577/bin/uautomizer/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 15:32:53,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:32:53,806 WARN L261 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 49 conjunts are in the unsatisfiable core [2020-12-01 15:32:53,808 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:32:54,255 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:32:54,255 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126217397] [2020-12-01 15:32:54,255 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 15:32:54,255 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [108247550] [2020-12-01 15:32:54,256 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-01 15:32:54,256 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-12-01 15:32:54,256 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271354133] [2020-12-01 15:32:54,256 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-12-01 15:32:54,256 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:32:54,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-12-01 15:32:54,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2020-12-01 15:32:54,257 INFO L87 Difference]: Start difference. First operand 43 states and 49 transitions. Second operand 15 states. [2020-12-01 15:32:55,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:32:55,446 INFO L93 Difference]: Finished difference Result 100 states and 119 transitions. [2020-12-01 15:32:55,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-12-01 15:32:55,447 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 27 [2020-12-01 15:32:55,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:32:55,448 INFO L225 Difference]: With dead ends: 100 [2020-12-01 15:32:55,448 INFO L226 Difference]: Without dead ends: 75 [2020-12-01 15:32:55,449 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=169, Invalid=823, Unknown=0, NotChecked=0, Total=992 [2020-12-01 15:32:55,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-12-01 15:32:55,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 49. [2020-12-01 15:32:55,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-12-01 15:32:55,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 56 transitions. [2020-12-01 15:32:55,455 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 56 transitions. Word has length 27 [2020-12-01 15:32:55,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:32:55,456 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 56 transitions. [2020-12-01 15:32:55,456 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-12-01 15:32:55,456 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 56 transitions. [2020-12-01 15:32:55,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-12-01 15:32:55,457 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:32:55,457 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:32:55,664 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 15:32:55,665 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:32:55,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:32:55,665 INFO L82 PathProgramCache]: Analyzing trace with hash 881914680, now seen corresponding path program 8 times [2020-12-01 15:32:55,665 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:32:55,665 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099660733] [2020-12-01 15:32:55,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:32:55,677 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 15:32:55,677 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1867722575] [2020-12-01 15:32:55,677 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5f5a3108-32be-4c62-a55d-3327b09b7577/bin/uautomizer/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 15:32:56,108 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-01 15:32:56,108 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-01 15:32:56,110 WARN L261 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 56 conjunts are in the unsatisfiable core [2020-12-01 15:32:56,112 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:32:56,630 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:32:56,630 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099660733] [2020-12-01 15:32:56,630 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 15:32:56,630 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1867722575] [2020-12-01 15:32:56,631 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-01 15:32:56,631 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-12-01 15:32:56,631 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765668105] [2020-12-01 15:32:56,631 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-12-01 15:32:56,631 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:32:56,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-12-01 15:32:56,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2020-12-01 15:32:56,632 INFO L87 Difference]: Start difference. First operand 49 states and 56 transitions. Second operand 15 states. [2020-12-01 15:32:57,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:32:57,296 INFO L93 Difference]: Finished difference Result 93 states and 109 transitions. [2020-12-01 15:32:57,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-01 15:32:57,297 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 29 [2020-12-01 15:32:57,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:32:57,297 INFO L225 Difference]: With dead ends: 93 [2020-12-01 15:32:57,297 INFO L226 Difference]: Without dead ends: 68 [2020-12-01 15:32:57,298 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=57, Invalid=363, Unknown=0, NotChecked=0, Total=420 [2020-12-01 15:32:57,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-12-01 15:32:57,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 53. [2020-12-01 15:32:57,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-12-01 15:32:57,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 60 transitions. [2020-12-01 15:32:57,313 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 60 transitions. Word has length 29 [2020-12-01 15:32:57,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:32:57,313 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 60 transitions. [2020-12-01 15:32:57,313 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-12-01 15:32:57,313 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 60 transitions. [2020-12-01 15:32:57,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-12-01 15:32:57,314 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:32:57,314 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:32:57,532 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2020-12-01 15:32:57,532 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:32:57,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:32:57,532 INFO L82 PathProgramCache]: Analyzing trace with hash 488887670, now seen corresponding path program 1 times [2020-12-01 15:32:57,533 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:32:57,533 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197795509] [2020-12-01 15:32:57,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:32:57,543 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 15:32:57,543 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1831404932] [2020-12-01 15:32:57,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5f5a3108-32be-4c62-a55d-3327b09b7577/bin/uautomizer/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 15:32:57,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:32:57,798 WARN L261 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 55 conjunts are in the unsatisfiable core [2020-12-01 15:32:57,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:32:58,504 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:32:58,505 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197795509] [2020-12-01 15:32:58,505 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 15:32:58,505 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1831404932] [2020-12-01 15:32:58,505 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-01 15:32:58,505 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-12-01 15:32:58,506 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971842486] [2020-12-01 15:32:58,506 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-12-01 15:32:58,506 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:32:58,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-12-01 15:32:58,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2020-12-01 15:32:58,507 INFO L87 Difference]: Start difference. First operand 53 states and 60 transitions. Second operand 16 states. [2020-12-01 15:32:59,530 WARN L197 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 30 [2020-12-01 15:32:59,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:32:59,853 INFO L93 Difference]: Finished difference Result 78 states and 89 transitions. [2020-12-01 15:32:59,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-12-01 15:32:59,854 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 29 [2020-12-01 15:32:59,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:32:59,854 INFO L225 Difference]: With dead ends: 78 [2020-12-01 15:32:59,854 INFO L226 Difference]: Without dead ends: 66 [2020-12-01 15:32:59,855 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=148, Invalid=722, Unknown=0, NotChecked=0, Total=870 [2020-12-01 15:32:59,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-12-01 15:32:59,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 53. [2020-12-01 15:32:59,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-12-01 15:32:59,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 60 transitions. [2020-12-01 15:32:59,861 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 60 transitions. Word has length 29 [2020-12-01 15:32:59,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:32:59,861 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 60 transitions. [2020-12-01 15:32:59,861 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-12-01 15:32:59,861 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 60 transitions. [2020-12-01 15:32:59,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-12-01 15:32:59,862 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:32:59,862 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:33:00,069 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-12-01 15:33:00,069 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:33:00,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:33:00,070 INFO L82 PathProgramCache]: Analyzing trace with hash -322397312, now seen corresponding path program 9 times [2020-12-01 15:33:00,070 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:33:00,070 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627564758] [2020-12-01 15:33:00,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:33:00,085 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 15:33:00,085 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1474419873] [2020-12-01 15:33:00,086 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5f5a3108-32be-4c62-a55d-3327b09b7577/bin/uautomizer/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 15:33:00,934 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-12-01 15:33:00,934 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-01 15:33:00,936 WARN L261 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 52 conjunts are in the unsatisfiable core [2020-12-01 15:33:00,938 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:33:01,235 INFO L757 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-01 15:33:01,258 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627564758] [2020-12-01 15:33:01,258 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 15:33:01,258 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1474419873] [2020-12-01 15:33:01,258 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: variable got div captured [2020-12-01 15:33:01,259 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:33:01,259 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2020-12-01 15:33:01,259 ERROR L205 FreeRefinementEngine]: Strategy CAMEL failed to provide any proof altough trace is infeasible [2020-12-01 15:33:01,259 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-01 15:33:01,467 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-12-01 15:33:01,485 WARN L254 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-12-01 15:33:01,485 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.12 03:33:01 BoogieIcfgContainer [2020-12-01 15:33:01,486 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-01 15:33:01,486 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-01 15:33:01,486 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-01 15:33:01,486 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-01 15:33:01,488 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:32:43" (3/4) ... [2020-12-01 15:33:01,492 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-01 15:33:01,492 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-01 15:33:01,496 INFO L168 Benchmark]: Toolchain (without parser) took 19066.32 ms. Allocated memory was 83.9 MB in the beginning and 192.9 MB in the end (delta: 109.1 MB). Free memory was 50.8 MB in the beginning and 123.7 MB in the end (delta: -72.8 MB). Peak memory consumption was 35.7 MB. Max. memory is 16.1 GB. [2020-12-01 15:33:01,496 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 83.9 MB. Free memory was 57.3 MB in the beginning and 57.2 MB in the end (delta: 29.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 15:33:01,497 INFO L168 Benchmark]: CACSL2BoogieTranslator took 298.07 ms. Allocated memory was 83.9 MB in the beginning and 109.1 MB in the end (delta: 25.2 MB). Free memory was 50.7 MB in the beginning and 86.7 MB in the end (delta: -36.0 MB). Peak memory consumption was 7.5 MB. Max. memory is 16.1 GB. [2020-12-01 15:33:01,497 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.99 ms. Allocated memory is still 109.1 MB. Free memory was 86.7 MB in the beginning and 85.2 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 15:33:01,498 INFO L168 Benchmark]: Boogie Preprocessor took 48.77 ms. Allocated memory is still 109.1 MB. Free memory was 85.2 MB in the beginning and 84.1 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 15:33:01,498 INFO L168 Benchmark]: RCFGBuilder took 313.44 ms. Allocated memory is still 109.1 MB. Free memory was 84.1 MB in the beginning and 70.9 MB in the end (delta: 13.2 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2020-12-01 15:33:01,499 INFO L168 Benchmark]: TraceAbstraction took 18341.77 ms. Allocated memory was 109.1 MB in the beginning and 192.9 MB in the end (delta: 83.9 MB). Free memory was 70.6 MB in the beginning and 123.7 MB in the end (delta: -53.1 MB). Peak memory consumption was 30.3 MB. Max. memory is 16.1 GB. [2020-12-01 15:33:01,499 INFO L168 Benchmark]: Witness Printer took 6.07 ms. Allocated memory is still 192.9 MB. Free memory is still 123.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 15:33:01,504 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 83.9 MB. Free memory was 57.3 MB in the beginning and 57.2 MB in the end (delta: 29.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 298.07 ms. Allocated memory was 83.9 MB in the beginning and 109.1 MB in the end (delta: 25.2 MB). Free memory was 50.7 MB in the beginning and 86.7 MB in the end (delta: -36.0 MB). Peak memory consumption was 7.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 50.99 ms. Allocated memory is still 109.1 MB. Free memory was 86.7 MB in the beginning and 85.2 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 48.77 ms. Allocated memory is still 109.1 MB. Free memory was 85.2 MB in the beginning and 84.1 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 313.44 ms. Allocated memory is still 109.1 MB. Free memory was 84.1 MB in the beginning and 70.9 MB in the end (delta: 13.2 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 18341.77 ms. Allocated memory was 109.1 MB in the beginning and 192.9 MB in the end (delta: 83.9 MB). Free memory was 70.6 MB in the beginning and 123.7 MB in the end (delta: -53.1 MB). Peak memory consumption was 30.3 MB. Max. memory is 16.1 GB. * Witness Printer took 6.07 ms. Allocated memory is still 192.9 MB. Free memory is still 123.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 12]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L26] unsigned A, B; [L27] unsigned q, r, b; [L28] A = __VERIFIER_nondet_uint() [L16] COND FALSE !(!cond) [L30] B = 1 [L31] q = 0 [L32] r = A [L33] b = B [L34] COND TRUE 1 [L35] COND FALSE !(!(r >= b)) [L36] b = 2 * b [L34] COND TRUE 1 [L35] COND FALSE !(!(r >= b)) [L36] b = 2 * b [L34] COND TRUE 1 [L35] COND FALSE !(!(r >= b)) [L36] b = 2 * b [L34] COND TRUE 1 [L35] COND FALSE !(!(r >= b)) [L36] b = 2 * b [L34] COND TRUE 1 [L35] COND FALSE !(!(r >= b)) [L36] b = 2 * b [L34] COND TRUE 1 [L35] COND TRUE !(r >= b) [L38] COND TRUE 1 [L19] COND FALSE !(!(cond)) [L40] COND FALSE !(!(b != B)) [L41] q = 2 * q [L42] b = b / 2 [L43] COND TRUE r >= b [L44] q = q + 1 [L45] r = r - b [L38] COND TRUE 1 [L19] COND FALSE !(!(cond)) [L40] COND FALSE !(!(b != B)) [L41] q = 2 * q [L42] b = b / 2 [L43] COND TRUE r >= b [L44] q = q + 1 [L45] r = r - b [L38] COND TRUE 1 [L19] COND TRUE !(cond) [L12] COND FALSE !(0) [L12] __assert_fail ("0", "divbin2.c", 10, __extension__ __PRETTY_FUNCTION__) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 24 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 18.2s, OverallIterations: 14, TraceHistogramMax: 6, AutomataDifference: 6.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 209 SDtfs, 616 SDslu, 907 SDs, 0 SdLazy, 2059 SolverSat, 268 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 333 GetRequests, 146 SyntacticMatches, 3 SemanticMatches, 184 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 593 ImplicationChecksByTransitivity, 6.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=53occurred in iteration=12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 13 MinimizatonAttempts, 112 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 2.7s SatisfiabilityAnalysisTime, 3.7s InterpolantComputationTime, 266 NumberOfCodeBlocks, 266 NumberOfCodeBlocksAsserted, 24 NumberOfCheckSat, 253 ConstructedInterpolants, 0 QuantifiedInterpolants, 82209 SizeOfPredicates, 81 NumberOfNonLiveVariables, 996 ConjunctsInSsa, 389 ConjunctsInUnsatCore, 13 InterpolantComputations, 3 PerfectInterpolantSequences, 21/172 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 0.2.0-69874e2 [2020-12-01 15:33:04,020 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2020-12-01 15:33:04,096 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-01 15:33:04,109 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-01 15:33:04,110 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-01 15:33:04,111 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-01 15:33:04,112 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-01 15:33:04,112 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-01 15:33:04,118 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-01 15:33:04,118 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-01 15:33:04,118 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-01 15:33:04,120 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-01 15:33:04,120 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-01 15:33:04,123 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_5f5a3108-32be-4c62-a55d-3327b09b7577/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-12-01 15:33:04,160 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-01 15:33:04,161 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-01 15:33:04,162 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-01 15:33:04,162 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-01 15:33:04,162 INFO L138 SettingsManager]: * Use SBE=true [2020-12-01 15:33:04,163 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-01 15:33:04,163 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-01 15:33:04,163 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-01 15:33:04,163 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-01 15:33:04,163 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-01 15:33:04,163 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-01 15:33:04,164 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-01 15:33:04,164 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-12-01 15:33:04,164 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-12-01 15:33:04,164 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-01 15:33:04,164 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-01 15:33:04,165 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-01 15:33:04,165 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-01 15:33:04,165 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-01 15:33:04,165 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-01 15:33:04,165 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-01 15:33:04,166 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-01 15:33:04,166 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-01 15:33:04,166 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-01 15:33:04,166 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-01 15:33:04,166 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-01 15:33:04,166 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-12-01 15:33:04,167 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-12-01 15:33:04,167 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-01 15:33:04,167 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-01 15:33:04,167 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-01 15:33:04,167 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_5f5a3108-32be-4c62-a55d-3327b09b7577/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_5f5a3108-32be-4c62-a55d-3327b09b7577/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ca5b2e062351979cc30531f22e2f0306ecbb7c02 [2020-12-01 15:33:04,555 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-01 15:33:04,588 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-01 15:33:04,590 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-01 15:33:04,591 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-01 15:33:04,592 INFO L275 PluginConnector]: CDTParser initialized [2020-12-01 15:33:04,593 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_5f5a3108-32be-4c62-a55d-3327b09b7577/bin/uautomizer/../../sv-benchmarks/c/nla-digbench-scaling/divbin2_valuebound20.i [2020-12-01 15:33:04,661 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_5f5a3108-32be-4c62-a55d-3327b09b7577/bin/uautomizer/data/a93fcd5ba/c782f728b0474c7cb2fa397fda84a5cb/FLAGbd5efdd1a [2020-12-01 15:33:05,185 INFO L306 CDTParser]: Found 1 translation units. [2020-12-01 15:33:05,187 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_5f5a3108-32be-4c62-a55d-3327b09b7577/sv-benchmarks/c/nla-digbench-scaling/divbin2_valuebound20.i [2020-12-01 15:33:05,194 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_5f5a3108-32be-4c62-a55d-3327b09b7577/bin/uautomizer/data/a93fcd5ba/c782f728b0474c7cb2fa397fda84a5cb/FLAGbd5efdd1a [2020-12-01 15:33:05,540 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_5f5a3108-32be-4c62-a55d-3327b09b7577/bin/uautomizer/data/a93fcd5ba/c782f728b0474c7cb2fa397fda84a5cb [2020-12-01 15:33:05,542 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-01 15:33:05,544 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-01 15:33:05,545 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-01 15:33:05,546 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-01 15:33:05,549 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-01 15:33:05,550 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 03:33:05" (1/1) ... [2020-12-01 15:33:05,552 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4acd6d91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:33:05, skipping insertion in model container [2020-12-01 15:33:05,552 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 03:33:05" (1/1) ... [2020-12-01 15:33:05,560 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-01 15:33:05,575 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-01 15:33:05,733 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 15:33:05,746 INFO L203 MainTranslator]: Completed pre-run [2020-12-01 15:33:05,765 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 15:33:05,781 INFO L208 MainTranslator]: Completed translation [2020-12-01 15:33:05,781 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:33:05 WrapperNode [2020-12-01 15:33:05,782 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-01 15:33:05,797 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-01 15:33:05,797 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-01 15:33:05,797 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-01 15:33:05,805 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:33:05" (1/1) ... [2020-12-01 15:33:05,817 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:33:05" (1/1) ... [2020-12-01 15:33:05,885 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-01 15:33:05,886 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-01 15:33:05,886 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-01 15:33:05,886 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-01 15:33:05,894 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:33:05" (1/1) ... [2020-12-01 15:33:05,894 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:33:05" (1/1) ... [2020-12-01 15:33:05,896 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:33:05" (1/1) ... [2020-12-01 15:33:05,897 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:33:05" (1/1) ... [2020-12-01 15:33:05,901 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:33:05" (1/1) ... [2020-12-01 15:33:05,905 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:33:05" (1/1) ... [2020-12-01 15:33:05,910 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:33:05" (1/1) ... [2020-12-01 15:33:05,913 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-01 15:33:05,914 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-01 15:33:05,914 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-01 15:33:05,914 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-01 15:33:05,916 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:33:05" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5f5a3108-32be-4c62-a55d-3327b09b7577/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 [2020-12-01 15:33:05,993 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-12-01 15:33:05,994 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-01 15:33:05,994 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-01 15:33:05,994 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-01 15:33:06,358 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-01 15:33:06,358 INFO L298 CfgBuilder]: Removed 16 assume(true) statements. [2020-12-01 15:33:06,360 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:33:06 BoogieIcfgContainer [2020-12-01 15:33:06,360 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-01 15:33:06,361 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-01 15:33:06,361 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-01 15:33:06,364 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-01 15:33:06,364 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.12 03:33:05" (1/3) ... [2020-12-01 15:33:06,365 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f5d6ad3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 03:33:06, skipping insertion in model container [2020-12-01 15:33:06,365 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:33:05" (2/3) ... [2020-12-01 15:33:06,366 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f5d6ad3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 03:33:06, skipping insertion in model container [2020-12-01 15:33:06,366 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:33:06" (3/3) ... [2020-12-01 15:33:06,367 INFO L111 eAbstractionObserver]: Analyzing ICFG divbin2_valuebound20.i [2020-12-01 15:33:06,380 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-01 15:33:06,383 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-12-01 15:33:06,393 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-12-01 15:33:06,416 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-01 15:33:06,416 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-01 15:33:06,416 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-01 15:33:06,416 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-01 15:33:06,416 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-01 15:33:06,417 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-01 15:33:06,417 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-01 15:33:06,417 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-01 15:33:06,429 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2020-12-01 15:33:06,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-01 15:33:06,434 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:33:06,434 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:33:06,435 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:33:06,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:33:06,440 INFO L82 PathProgramCache]: Analyzing trace with hash -1104570084, now seen corresponding path program 1 times [2020-12-01 15:33:06,463 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-01 15:33:06,464 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1733083130] [2020-12-01 15:33:06,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5f5a3108-32be-4c62-a55d-3327b09b7577/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 [2020-12-01 15:33:06,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:33:06,619 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 1 conjunts are in the unsatisfiable core [2020-12-01 15:33:06,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:33:06,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:33:06,662 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-01 15:33:06,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:33:06,681 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1733083130] [2020-12-01 15:33:06,682 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:33:06,682 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-12-01 15:33:06,683 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600531407] [2020-12-01 15:33:06,687 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-01 15:33:06,688 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-01 15:33:06,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-01 15:33:06,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-01 15:33:06,713 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 2 states. [2020-12-01 15:33:06,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:33:06,740 INFO L93 Difference]: Finished difference Result 45 states and 66 transitions. [2020-12-01 15:33:06,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-01 15:33:06,741 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-12-01 15:33:06,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:33:06,753 INFO L225 Difference]: With dead ends: 45 [2020-12-01 15:33:06,753 INFO L226 Difference]: Without dead ends: 20 [2020-12-01 15:33:06,756 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-01 15:33:06,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-12-01 15:33:06,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2020-12-01 15:33:06,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-12-01 15:33:06,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2020-12-01 15:33:06,792 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 10 [2020-12-01 15:33:06,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:33:06,793 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2020-12-01 15:33:06,793 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-01 15:33:06,794 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2020-12-01 15:33:06,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-01 15:33:06,795 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:33:06,795 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:33:06,997 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-12-01 15:33:06,997 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:33:06,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:33:06,998 INFO L82 PathProgramCache]: Analyzing trace with hash -2096849699, now seen corresponding path program 1 times [2020-12-01 15:33:06,999 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-01 15:33:06,999 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [792440369] [2020-12-01 15:33:06,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5f5a3108-32be-4c62-a55d-3327b09b7577/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 [2020-12-01 15:33:07,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:33:07,079 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 11 conjunts are in the unsatisfiable core [2020-12-01 15:33:07,081 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:33:07,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:33:07,344 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-01 15:33:07,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:33:07,851 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [792440369] [2020-12-01 15:33:07,851 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:33:07,852 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 5] imperfect sequences [] total 10 [2020-12-01 15:33:07,853 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109580558] [2020-12-01 15:33:07,854 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-01 15:33:07,854 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-01 15:33:07,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-01 15:33:07,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-12-01 15:33:07,857 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand 10 states. [2020-12-01 15:33:08,387 WARN L197 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 13 [2020-12-01 15:33:08,997 WARN L197 SmtUtils]: Spent 349.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 18 [2020-12-01 15:33:13,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:33:13,816 INFO L93 Difference]: Finished difference Result 47 states and 55 transitions. [2020-12-01 15:33:13,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-01 15:33:13,817 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 11 [2020-12-01 15:33:13,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:33:13,818 INFO L225 Difference]: With dead ends: 47 [2020-12-01 15:33:13,819 INFO L226 Difference]: Without dead ends: 35 [2020-12-01 15:33:13,820 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=100, Invalid=206, Unknown=0, NotChecked=0, Total=306 [2020-12-01 15:33:13,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-12-01 15:33:13,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 31. [2020-12-01 15:33:13,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-12-01 15:33:13,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions. [2020-12-01 15:33:13,829 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 11 [2020-12-01 15:33:13,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:33:13,829 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 36 transitions. [2020-12-01 15:33:13,829 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-01 15:33:13,830 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions. [2020-12-01 15:33:13,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-01 15:33:13,831 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:33:13,831 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:33:14,046 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-12-01 15:33:14,046 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:33:14,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:33:14,047 INFO L82 PathProgramCache]: Analyzing trace with hash 2120747147, now seen corresponding path program 1 times [2020-12-01 15:33:14,050 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-01 15:33:14,050 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [621957419] [2020-12-01 15:33:14,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5f5a3108-32be-4c62-a55d-3327b09b7577/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 [2020-12-01 15:33:14,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:33:14,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-01 15:33:14,150 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:33:14,175 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:33:14,176 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-01 15:33:14,199 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:33:14,200 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [621957419] [2020-12-01 15:33:14,201 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:33:14,201 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-12-01 15:33:14,201 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666393659] [2020-12-01 15:33:14,204 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-01 15:33:14,210 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-01 15:33:14,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-01 15:33:14,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-01 15:33:14,212 INFO L87 Difference]: Start difference. First operand 31 states and 36 transitions. Second operand 3 states. [2020-12-01 15:33:14,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:33:14,303 INFO L93 Difference]: Finished difference Result 48 states and 54 transitions. [2020-12-01 15:33:14,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-01 15:33:14,305 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2020-12-01 15:33:14,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:33:14,306 INFO L225 Difference]: With dead ends: 48 [2020-12-01 15:33:14,306 INFO L226 Difference]: Without dead ends: 27 [2020-12-01 15:33:14,307 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-01 15:33:14,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-12-01 15:33:14,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-12-01 15:33:14,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-12-01 15:33:14,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2020-12-01 15:33:14,312 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 15 [2020-12-01 15:33:14,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:33:14,313 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2020-12-01 15:33:14,313 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-01 15:33:14,313 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2020-12-01 15:33:14,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-01 15:33:14,314 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:33:14,314 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:33:14,526 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-12-01 15:33:14,526 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:33:14,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:33:14,527 INFO L82 PathProgramCache]: Analyzing trace with hash 2060482771, now seen corresponding path program 1 times [2020-12-01 15:33:14,527 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-01 15:33:14,527 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2007397250] [2020-12-01 15:33:14,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5f5a3108-32be-4c62-a55d-3327b09b7577/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 [2020-12-01 15:33:14,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:33:14,574 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 14 conjunts are in the unsatisfiable core [2020-12-01 15:33:14,576 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:33:14,824 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:33:14,824 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-01 15:33:16,011 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:33:16,012 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2007397250] [2020-12-01 15:33:16,012 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-01 15:33:16,013 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 14 [2020-12-01 15:33:16,013 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949109985] [2020-12-01 15:33:16,013 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-12-01 15:33:16,013 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-01 15:33:16,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-12-01 15:33:16,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2020-12-01 15:33:16,015 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand 14 states. [2020-12-01 15:33:17,184 WARN L197 SmtUtils]: Spent 380.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 30 [2020-12-01 15:33:17,825 WARN L197 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 18 [2020-12-01 15:33:18,362 WARN L197 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 23 [2020-12-01 15:33:18,875 WARN L197 SmtUtils]: Spent 318.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 35 [2020-12-01 15:33:19,358 WARN L197 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 22 [2020-12-01 15:33:19,805 WARN L197 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 15 [2020-12-01 15:33:20,740 WARN L197 SmtUtils]: Spent 357.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 27 [2020-12-01 15:33:21,255 WARN L197 SmtUtils]: Spent 320.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 25 [2020-12-01 15:33:25,885 WARN L197 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 20 [2020-12-01 15:33:26,535 WARN L197 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 24 [2020-12-01 15:33:26,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:33:26,770 INFO L93 Difference]: Finished difference Result 94 states and 115 transitions. [2020-12-01 15:33:26,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-12-01 15:33:26,772 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 15 [2020-12-01 15:33:26,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:33:26,773 INFO L225 Difference]: With dead ends: 94 [2020-12-01 15:33:26,774 INFO L226 Difference]: Without dead ends: 74 [2020-12-01 15:33:26,775 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=324, Invalid=798, Unknown=0, NotChecked=0, Total=1122 [2020-12-01 15:33:26,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-12-01 15:33:26,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 47. [2020-12-01 15:33:26,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-12-01 15:33:26,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 57 transitions. [2020-12-01 15:33:26,788 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 57 transitions. Word has length 15 [2020-12-01 15:33:26,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:33:26,789 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 57 transitions. [2020-12-01 15:33:26,789 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-12-01 15:33:26,789 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 57 transitions. [2020-12-01 15:33:26,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-12-01 15:33:26,790 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:33:26,790 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:33:26,999 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-12-01 15:33:27,000 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:33:27,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:33:27,000 INFO L82 PathProgramCache]: Analyzing trace with hash 952501652, now seen corresponding path program 1 times [2020-12-01 15:33:27,000 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-01 15:33:27,001 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2028303448] [2020-12-01 15:33:27,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5f5a3108-32be-4c62-a55d-3327b09b7577/bin/uautomizer/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2020-12-01 15:33:27,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:33:27,084 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-01 15:33:27,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:33:27,141 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:33:27,141 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-01 15:33:27,199 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:33:27,199 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2028303448] [2020-12-01 15:33:27,199 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-01 15:33:27,199 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 7 [2020-12-01 15:33:27,199 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387640391] [2020-12-01 15:33:27,200 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-01 15:33:27,200 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-01 15:33:27,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-01 15:33:27,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-12-01 15:33:27,201 INFO L87 Difference]: Start difference. First operand 47 states and 57 transitions. Second operand 7 states. [2020-12-01 15:33:27,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:33:27,365 INFO L93 Difference]: Finished difference Result 75 states and 88 transitions. [2020-12-01 15:33:27,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-01 15:33:27,368 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 21 [2020-12-01 15:33:27,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:33:27,371 INFO L225 Difference]: With dead ends: 75 [2020-12-01 15:33:27,371 INFO L226 Difference]: Without dead ends: 47 [2020-12-01 15:33:27,372 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-12-01 15:33:27,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-12-01 15:33:27,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-12-01 15:33:27,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-12-01 15:33:27,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 56 transitions. [2020-12-01 15:33:27,382 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 56 transitions. Word has length 21 [2020-12-01 15:33:27,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:33:27,382 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 56 transitions. [2020-12-01 15:33:27,382 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-01 15:33:27,382 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 56 transitions. [2020-12-01 15:33:27,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-12-01 15:33:27,383 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:33:27,383 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:33:27,599 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-12-01 15:33:27,600 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:33:27,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:33:27,600 INFO L82 PathProgramCache]: Analyzing trace with hash -278064676, now seen corresponding path program 2 times [2020-12-01 15:33:27,601 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-01 15:33:27,602 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1044700316] [2020-12-01 15:33:27,602 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5f5a3108-32be-4c62-a55d-3327b09b7577/bin/uautomizer/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2020-12-01 15:33:27,672 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-01 15:33:27,672 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-01 15:33:27,677 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 19 conjunts are in the unsatisfiable core [2020-12-01 15:33:27,678 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:33:28,009 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:33:28,010 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-01 15:33:30,091 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2020-12-01 15:33:30,114 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:33:30,115 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1044700316] [2020-12-01 15:33:30,115 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-01 15:33:30,115 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 19 [2020-12-01 15:33:30,115 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803558967] [2020-12-01 15:33:30,116 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-12-01 15:33:30,116 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-01 15:33:30,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-12-01 15:33:30,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=254, Unknown=0, NotChecked=0, Total=342 [2020-12-01 15:33:30,117 INFO L87 Difference]: Start difference. First operand 47 states and 56 transitions. Second operand 19 states. [2020-12-01 15:33:31,914 WARN L197 SmtUtils]: Spent 883.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 49 [2020-12-01 15:33:32,578 WARN L197 SmtUtils]: Spent 325.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 24 [2020-12-01 15:33:33,371 WARN L197 SmtUtils]: Spent 453.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 37 [2020-12-01 15:33:34,526 WARN L197 SmtUtils]: Spent 752.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 54 [2020-12-01 15:33:35,543 WARN L197 SmtUtils]: Spent 540.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 36 [2020-12-01 15:33:36,176 WARN L197 SmtUtils]: Spent 341.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 27 [2020-12-01 15:33:36,828 WARN L197 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 18 [2020-12-01 15:33:38,837 WARN L197 SmtUtils]: Spent 444.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 41 [2020-12-01 15:33:39,558 WARN L197 SmtUtils]: Spent 323.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 29 [2020-12-01 15:33:40,479 WARN L197 SmtUtils]: Spent 562.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 49 [2020-12-01 15:33:41,489 WARN L197 SmtUtils]: Spent 695.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 40 [2020-12-01 15:33:42,171 WARN L197 SmtUtils]: Spent 363.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 26 [2020-12-01 15:33:42,695 WARN L197 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 18 [2020-12-01 15:33:43,636 WARN L197 SmtUtils]: Spent 631.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 46 [2020-12-01 15:33:44,647 WARN L197 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 17 [2020-12-01 15:33:45,554 WARN L197 SmtUtils]: Spent 351.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 28 [2020-12-01 15:33:46,323 WARN L197 SmtUtils]: Spent 476.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 30 [2020-12-01 15:33:47,932 WARN L197 SmtUtils]: Spent 380.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 26 [2020-12-01 15:33:48,670 WARN L197 SmtUtils]: Spent 364.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 21 [2020-12-01 15:33:49,574 WARN L197 SmtUtils]: Spent 432.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 25 [2020-12-01 15:33:49,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:33:49,621 INFO L93 Difference]: Finished difference Result 140 states and 168 transitions. [2020-12-01 15:33:49,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-12-01 15:33:49,623 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 21 [2020-12-01 15:33:49,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:33:49,624 INFO L225 Difference]: With dead ends: 140 [2020-12-01 15:33:49,625 INFO L226 Difference]: Without dead ends: 116 [2020-12-01 15:33:49,626 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 762 ImplicationChecksByTransitivity, 17.4s TimeCoverageRelationStatistics Valid=708, Invalid=2048, Unknown=0, NotChecked=0, Total=2756 [2020-12-01 15:33:49,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-12-01 15:33:49,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 62. [2020-12-01 15:33:49,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-12-01 15:33:49,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 76 transitions. [2020-12-01 15:33:49,641 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 76 transitions. Word has length 21 [2020-12-01 15:33:49,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:33:49,642 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 76 transitions. [2020-12-01 15:33:49,642 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-12-01 15:33:49,642 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 76 transitions. [2020-12-01 15:33:49,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-01 15:33:49,643 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:33:49,643 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:33:49,844 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-12-01 15:33:49,844 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:33:49,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:33:49,845 INFO L82 PathProgramCache]: Analyzing trace with hash -1304105025, now seen corresponding path program 2 times [2020-12-01 15:33:49,845 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-01 15:33:49,845 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [331777505] [2020-12-01 15:33:49,845 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5f5a3108-32be-4c62-a55d-3327b09b7577/bin/uautomizer/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2020-12-01 15:33:49,884 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-12-01 15:33:49,885 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-01 15:33:49,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-01 15:33:49,888 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:33:50,006 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2020-12-01 15:33:50,006 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-01 15:33:50,062 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2020-12-01 15:33:50,063 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [331777505] [2020-12-01 15:33:50,063 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:33:50,063 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 3] imperfect sequences [] total 8 [2020-12-01 15:33:50,063 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715961110] [2020-12-01 15:33:50,064 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-01 15:33:50,064 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-01 15:33:50,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-01 15:33:50,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-12-01 15:33:50,065 INFO L87 Difference]: Start difference. First operand 62 states and 76 transitions. Second operand 8 states. [2020-12-01 15:33:50,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:33:50,066 INFO L93 Difference]: Finished difference Result 62 states and 76 transitions. [2020-12-01 15:33:50,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-01 15:33:50,067 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 23 [2020-12-01 15:33:50,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:33:50,067 INFO L225 Difference]: With dead ends: 62 [2020-12-01 15:33:50,067 INFO L226 Difference]: Without dead ends: 0 [2020-12-01 15:33:50,068 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-12-01 15:33:50,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-01 15:33:50,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-01 15:33:50,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-01 15:33:50,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-01 15:33:50,068 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 23 [2020-12-01 15:33:50,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:33:50,068 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-01 15:33:50,068 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-01 15:33:50,068 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-01 15:33:50,068 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-01 15:33:50,269 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2020-12-01 15:33:50,270 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-01 15:33:50,862 WARN L197 SmtUtils]: Spent 453.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 29 [2020-12-01 15:33:50,865 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-12-01 15:33:50,865 INFO L262 CegarLoopResult]: For program point L19(lines 19 22) no Hoare annotation was computed. [2020-12-01 15:33:50,865 INFO L258 CegarLoopResult]: At program point L19-1(line 40) the Hoare annotation is: (let ((.cse0 (= (bvadd ULTIMATE.start___VERIFIER_assert_~cond (_ bv4294967295 32)) (_ bv0 32))) (.cse1 (= (_ bv1 32) ULTIMATE.start_assume_abort_if_not_~cond)) (.cse2 (= (_ bv1 32) ULTIMATE.start_main_~B~0)) (.cse3 (bvule ULTIMATE.start_main_~A~0 (_ bv20 32)))) (or (and (= ULTIMATE.start_main_~A~0 (bvadd (bvmul ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~b~0) ULTIMATE.start_main_~r~0)) .cse0 .cse1 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~B~0) .cse2 .cse3) (and .cse0 .cse1 (= ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~A~0) (= ULTIMATE.start_main_~b~0 (bvmul ULTIMATE.start_main_~B~0 (_ bv2 32))) (= (_ bv0 32) ULTIMATE.start_main_~q~0) .cse2 .cse3))) [2020-12-01 15:33:50,865 INFO L262 CegarLoopResult]: For program point L19-2(lines 19 22) no Hoare annotation was computed. [2020-12-01 15:33:50,865 INFO L265 CegarLoopResult]: At program point L19-3(lines 18 24) the Hoare annotation is: true [2020-12-01 15:33:50,865 INFO L262 CegarLoopResult]: For program point L15(lines 15 17) no Hoare annotation was computed. [2020-12-01 15:33:50,866 INFO L262 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-12-01 15:33:50,866 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-01 15:33:50,866 INFO L262 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-12-01 15:33:50,866 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-12-01 15:33:50,866 INFO L262 CegarLoopResult]: For program point L20(lines 20 21) no Hoare annotation was computed. [2020-12-01 15:33:50,866 INFO L262 CegarLoopResult]: For program point L20-1(lines 20 21) no Hoare annotation was computed. [2020-12-01 15:33:50,866 INFO L265 CegarLoopResult]: At program point L49(lines 25 50) the Hoare annotation is: true [2020-12-01 15:33:50,866 INFO L262 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2020-12-01 15:33:50,866 INFO L262 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed. [2020-12-01 15:33:50,866 INFO L262 CegarLoopResult]: For program point L12-2(line 12) no Hoare annotation was computed. [2020-12-01 15:33:50,866 INFO L262 CegarLoopResult]: For program point L12-4(line 12) no Hoare annotation was computed. [2020-12-01 15:33:50,866 INFO L262 CegarLoopResult]: For program point L12-6(line 12) no Hoare annotation was computed. [2020-12-01 15:33:50,866 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-01 15:33:50,866 INFO L262 CegarLoopResult]: For program point L38-1(lines 38 47) no Hoare annotation was computed. [2020-12-01 15:33:50,866 INFO L258 CegarLoopResult]: At program point L34-2(lines 34 37) the Hoare annotation is: false [2020-12-01 15:33:50,867 INFO L262 CegarLoopResult]: For program point L43(lines 43 46) no Hoare annotation was computed. [2020-12-01 15:33:50,867 INFO L262 CegarLoopResult]: For program point L43-2(lines 25 50) no Hoare annotation was computed. [2020-12-01 15:33:50,867 INFO L262 CegarLoopResult]: For program point L35(line 35) no Hoare annotation was computed. [2020-12-01 15:33:50,894 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.12 03:33:50 BoogieIcfgContainer [2020-12-01 15:33:50,894 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-01 15:33:50,895 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-01 15:33:50,895 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-01 15:33:50,895 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-01 15:33:50,896 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:33:06" (3/4) ... [2020-12-01 15:33:50,899 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-01 15:33:50,911 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2020-12-01 15:33:50,912 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-01 15:33:50,912 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-01 15:33:50,912 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-01 15:33:50,981 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_5f5a3108-32be-4c62-a55d-3327b09b7577/bin/uautomizer/witness.graphml [2020-12-01 15:33:50,982 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-01 15:33:50,983 INFO L168 Benchmark]: Toolchain (without parser) took 45438.54 ms. Allocated memory was 73.4 MB in the beginning and 107.0 MB in the end (delta: 33.6 MB). Free memory was 50.2 MB in the beginning and 27.9 MB in the end (delta: 22.3 MB). Peak memory consumption was 54.0 MB. Max. memory is 16.1 GB. [2020-12-01 15:33:50,983 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 54.5 MB. Free memory was 35.6 MB in the beginning and 35.6 MB in the end (delta: 35.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 15:33:50,984 INFO L168 Benchmark]: CACSL2BoogieTranslator took 236.64 ms. Allocated memory is still 73.4 MB. Free memory was 50.0 MB in the beginning and 39.9 MB in the end (delta: 10.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-12-01 15:33:50,984 INFO L168 Benchmark]: Boogie Procedure Inliner took 88.84 ms. Allocated memory is still 73.4 MB. Free memory was 57.5 MB in the beginning and 57.0 MB in the end (delta: 518.6 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 15:33:50,985 INFO L168 Benchmark]: Boogie Preprocessor took 26.72 ms. Allocated memory is still 73.4 MB. Free memory was 57.0 MB in the beginning and 55.8 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 15:33:50,985 INFO L168 Benchmark]: RCFGBuilder took 446.49 ms. Allocated memory is still 73.4 MB. Free memory was 55.7 MB in the beginning and 42.4 MB in the end (delta: 13.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-12-01 15:33:50,986 INFO L168 Benchmark]: TraceAbstraction took 44533.22 ms. Allocated memory was 73.4 MB in the beginning and 107.0 MB in the end (delta: 33.6 MB). Free memory was 42.0 MB in the beginning and 31.0 MB in the end (delta: 10.9 MB). Peak memory consumption was 46.7 MB. Max. memory is 16.1 GB. [2020-12-01 15:33:50,986 INFO L168 Benchmark]: Witness Printer took 86.81 ms. Allocated memory is still 107.0 MB. Free memory was 31.0 MB in the beginning and 27.9 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 15:33:50,990 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 54.5 MB. Free memory was 35.6 MB in the beginning and 35.6 MB in the end (delta: 35.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 236.64 ms. Allocated memory is still 73.4 MB. Free memory was 50.0 MB in the beginning and 39.9 MB in the end (delta: 10.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 88.84 ms. Allocated memory is still 73.4 MB. Free memory was 57.5 MB in the beginning and 57.0 MB in the end (delta: 518.6 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 26.72 ms. Allocated memory is still 73.4 MB. Free memory was 57.0 MB in the beginning and 55.8 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 446.49 ms. Allocated memory is still 73.4 MB. Free memory was 55.7 MB in the beginning and 42.4 MB in the end (delta: 13.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 44533.22 ms. Allocated memory was 73.4 MB in the beginning and 107.0 MB in the end (delta: 33.6 MB). Free memory was 42.0 MB in the beginning and 31.0 MB in the end (delta: 10.9 MB). Peak memory consumption was 46.7 MB. Max. memory is 16.1 GB. * Witness Printer took 86.81 ms. Allocated memory is still 107.0 MB. Free memory was 31.0 MB in the beginning and 27.9 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 34]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: (((((A == ~bvadd64(~bvmul32(q, b), r) && ~bvadd64(cond, 4294967295bv32) == 0bv32) && 1bv32 == cond) && b == B) && 1bv32 == B) && ~bvule32(A, 20bv32)) || ((((((~bvadd64(cond, 4294967295bv32) == 0bv32 && 1bv32 == cond) && r == A) && b == ~bvmul32(B, 2bv32)) && 0bv32 == q) && 1bv32 == B) && ~bvule32(A, 20bv32)) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 24 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 43.8s, OverallIterations: 7, TraceHistogramMax: 7, AutomataDifference: 36.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 107 SDtfs, 502 SDslu, 341 SDs, 0 SdLazy, 632 SolverSat, 261 SolverUnsat, 4 SolverUnknown, 0 SolverNotchecked, 14.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 283 GetRequests, 170 SyntacticMatches, 2 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1039 ImplicationChecksByTransitivity, 26.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=62occurred in iteration=6, 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, 7 MinimizatonAttempts, 85 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 10 NumberOfFragments, 55 HoareAnnotationTreeSize, 4 FomulaSimplifications, 107 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 4 FomulaSimplificationsInter, 97 FormulaSimplificationTreeSizeReductionInter, 0.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 5.0s InterpolantComputationTime, 116 NumberOfCodeBlocks, 104 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 218 ConstructedInterpolants, 0 QuantifiedInterpolants, 22426 SizeOfPredicates, 32 NumberOfNonLiveVariables, 284 ConjunctsInSsa, 60 ConjunctsInUnsatCore, 14 InterpolantComputations, 8 PerfectInterpolantSequences, 98/148 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 correct! Received shutdown request...